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<div class="title">kimageeffect.cpp</div> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* This file is part of the KDE libraries</span>
<a name="l00002"></a>00002 <span class="comment"> Copyright (C) 1998, 1999, 2001, 2002 Daniel M. Duley <mosfet@kde.org></span>
<a name="l00003"></a>00003 <span class="comment"> (C) 1998, 1999 Christian Tibirna <ctibirna@total.net></span>
<a name="l00004"></a>00004 <span class="comment"> (C) 1998, 1999 Dirk Mueller <mueller@kde.org></span>
<a name="l00005"></a>00005 <span class="comment"> (C) 1999 Geert Jansen <g.t.jansen@stud.tue.nl></span>
<a name="l00006"></a>00006 <span class="comment"> (C) 2000 Josef Weidendorfer <weidendo@in.tum.de></span>
<a name="l00007"></a>00007 <span class="comment"> (C) 2004 Zack Rusin <zack@kde.org></span>
<a name="l00008"></a>00008 <span class="comment"></span>
<a name="l00009"></a>00009 <span class="comment">Redistribution and use in source and binary forms, with or without</span>
<a name="l00010"></a>00010 <span class="comment">modification, are permitted provided that the following conditions</span>
<a name="l00011"></a>00011 <span class="comment">are met:</span>
<a name="l00012"></a>00012 <span class="comment"></span>
<a name="l00013"></a>00013 <span class="comment">1. Redistributions of source code must retain the above copyright</span>
<a name="l00014"></a>00014 <span class="comment"> notice, this list of conditions and the following disclaimer.</span>
<a name="l00015"></a>00015 <span class="comment">2. Redistributions in binary form must reproduce the above copyright</span>
<a name="l00016"></a>00016 <span class="comment"> notice, this list of conditions and the following disclaimer in the</span>
<a name="l00017"></a>00017 <span class="comment"> documentation and/or other materials provided with the distribution.</span>
<a name="l00018"></a>00018 <span class="comment"></span>
<a name="l00019"></a>00019 <span class="comment">THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR</span>
<a name="l00020"></a>00020 <span class="comment">IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES</span>
<a name="l00021"></a>00021 <span class="comment">OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.</span>
<a name="l00022"></a>00022 <span class="comment">IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,</span>
<a name="l00023"></a>00023 <span class="comment">INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT</span>
<a name="l00024"></a>00024 <span class="comment">NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,</span>
<a name="l00025"></a>00025 <span class="comment">DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY</span>
<a name="l00026"></a>00026 <span class="comment">THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT</span>
<a name="l00027"></a>00027 <span class="comment">(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF</span>
<a name="l00028"></a>00028 <span class="comment">THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span>
<a name="l00029"></a>00029 <span class="comment"></span>
<a name="l00030"></a>00030 <span class="comment">*/</span>
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="comment">// $Id$</span>
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="preprocessor">#include <math.h></span>
<a name="l00035"></a>00035 <span class="preprocessor">#include <assert.h></span>
<a name="l00036"></a>00036
<a name="l00037"></a>00037 <span class="preprocessor">#include <qimage.h></span>
<a name="l00038"></a>00038 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00039"></a>00039 <span class="preprocessor">#include <iostream></span>
<a name="l00040"></a>00040
<a name="l00041"></a>00041 <span class="preprocessor">#include "kimageeffect.h"</span>
<a name="l00042"></a>00042 <span class="preprocessor">#include "kcpuinfo.h"</span>
<a name="l00043"></a>00043
<a name="l00044"></a>00044 <span class="preprocessor">#include <config.h></span>
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <span class="preprocessor">#if 0</span>
<a name="l00047"></a>00047 <span class="preprocessor"></span><span class="comment">//disabled until #74478 fixed.</span>
<a name="l00048"></a>00048
<a name="l00049"></a>00049 <span class="preprocessor">#if defined(__i386__) && ( defined(__GNUC__) || defined(__INTEL_COMPILER) )</span>
<a name="l00050"></a>00050 <span class="preprocessor"></span><span class="preprocessor"># if defined( HAVE_X86_MMX )</span>
<a name="l00051"></a>00051 <span class="preprocessor"></span><span class="preprocessor"># define USE_MMX_INLINE_ASM</span>
<a name="l00052"></a>00052 <span class="preprocessor"></span><span class="preprocessor"># endif</span>
<a name="l00053"></a>00053 <span class="preprocessor"></span><span class="preprocessor"># if defined( HAVE_X86_SSE2 )</span>
<a name="l00054"></a>00054 <span class="preprocessor"></span><span class="preprocessor"># define USE_SSE2_INLINE_ASM</span>
<a name="l00055"></a>00055 <span class="preprocessor"></span><span class="preprocessor"># endif</span>
<a name="l00056"></a>00056 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00057"></a>00057 <span class="preprocessor"></span>
<a name="l00058"></a>00058 <span class="preprocessor">#endif</span>
<a name="l00059"></a>00059 <span class="preprocessor"></span><span class="comment">//======================================================================</span>
<a name="l00060"></a>00060 <span class="comment">//</span>
<a name="l00061"></a>00061 <span class="comment">// Utility stuff for effects ported from ImageMagick to QImage</span>
<a name="l00062"></a>00062 <span class="comment">//</span>
<a name="l00063"></a>00063 <span class="comment">//======================================================================</span>
<a name="l00064"></a>00064 <span class="preprocessor">#define MaxRGB 255L</span>
<a name="l00065"></a>00065 <span class="preprocessor"></span><span class="preprocessor">#define DegreesToRadians(x) ((x)*M_PI/180.0)</span>
<a name="l00066"></a>00066 <span class="preprocessor"></span><span class="preprocessor">#define MagickSQ2PI 2.50662827463100024161235523934010416269302368164062</span>
<a name="l00067"></a>00067 <span class="preprocessor"></span><span class="preprocessor">#define MagickEpsilon 1.0e-12</span>
<a name="l00068"></a>00068 <span class="preprocessor"></span><span class="preprocessor">#define MagickPI 3.14159265358979323846264338327950288419716939937510</span>
<a name="l00069"></a>00069 <span class="preprocessor"></span><span class="preprocessor">#define MOD(x, y) ((x) < 0 ? ((y) - 1 - ((y) - 1 - (x)) % (y)) : (x) % (y))</span>
<a name="l00070"></a>00070 <span class="preprocessor"></span>
<a name="l00076"></a><a class="code" href="kimageeffect_8cpp.html#a7d71bc979aa1eff2255a4b3eaed4943f">00076</a> <span class="preprocessor">#define FXCLAMP(x,low,high) fxClamp(x,low,high)</span>
<a name="l00077"></a>00077 <span class="preprocessor"></span><span class="keyword">template</span><<span class="keyword">class</span> T>
<a name="l00078"></a>00078 <span class="keyword">inline</span> <span class="keyword">const</span> T& fxClamp( <span class="keyword">const</span> T& x, <span class="keyword">const</span> T& low, <span class="keyword">const</span> T& high )
<a name="l00079"></a>00079 {
<a name="l00080"></a>00080 <span class="keywordflow">if</span> ( x < low ) <span class="keywordflow">return</span> low;
<a name="l00081"></a>00081 <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( x > high ) <span class="keywordflow">return</span> high;
<a name="l00082"></a>00082 <span class="keywordflow">else</span> <span class="keywordflow">return</span> x;
<a name="l00083"></a>00083 }
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> intensityValue(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> color)
<a name="l00086"></a>00086 {
<a name="l00087"></a>00087 <span class="keywordflow">return</span>((<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>)((0.299*qRed(color) +
<a name="l00088"></a>00088 0.587*qGreen(color) +
<a name="l00089"></a>00089 0.1140000000000001*qBlue(color))));
<a name="l00090"></a>00090 }
<a name="l00091"></a>00091
<a name="l00092"></a>00092 <span class="keyword">template</span><<span class="keyword">typename</span> T>
<a name="l00093"></a>00093 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> liberateMemory(T **memory)
<a name="l00094"></a>00094 {
<a name="l00095"></a>00095 assert(memory != NULL);
<a name="l00096"></a>00096 <span class="keywordflow">if</span>(*memory == NULL) <span class="keywordflow">return</span>;
<a name="l00097"></a>00097 free((<span class="keywordtype">char</span>*)*memory);
<a name="l00098"></a>00098 *memory=NULL;
<a name="l00099"></a>00099 }
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <span class="keyword">struct </span>double_packet
<a name="l00102"></a>00102 {
<a name="l00103"></a>00103 <span class="keywordtype">double</span> red;
<a name="l00104"></a>00104 <span class="keywordtype">double</span> green;
<a name="l00105"></a>00105 <span class="keywordtype">double</span> blue;
<a name="l00106"></a>00106 <span class="keywordtype">double</span> alpha;
<a name="l00107"></a>00107 };
<a name="l00108"></a>00108
<a name="l00109"></a>00109 <span class="keyword">struct </span>short_packet
<a name="l00110"></a>00110 {
<a name="l00111"></a>00111 <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> <span class="keywordtype">int</span> red;
<a name="l00112"></a>00112 <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> <span class="keywordtype">int</span> green;
<a name="l00113"></a>00113 <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> <span class="keywordtype">int</span> blue;
<a name="l00114"></a>00114 <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> <span class="keywordtype">int</span> alpha;
<a name="l00115"></a>00115 };
<a name="l00116"></a>00116
<a name="l00117"></a>00117
<a name="l00118"></a>00118 <span class="comment">//======================================================================</span>
<a name="l00119"></a>00119 <span class="comment">//</span>
<a name="l00120"></a>00120 <span class="comment">// Gradient effects</span>
<a name="l00121"></a>00121 <span class="comment">//</span>
<a name="l00122"></a>00122 <span class="comment">//======================================================================</span>
<a name="l00123"></a>00123
<a name="l00124"></a><a class="code" href="classKImageEffect.html#a04ecebe13a238e0408bfbec022377637">00124</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#a04ecebe13a238e0408bfbec022377637" title="Create a gradient from color a to color b of the specified type.">KImageEffect::gradient</a>(<span class="keyword">const</span> <a class="codeRef" href="qsize.html">QSize</a> &size, <span class="keyword">const</span> <a class="codeRef" href="qcolor.html">QColor</a> &ca,
<a name="l00125"></a>00125 <span class="keyword">const</span> <a class="codeRef" href="qcolor.html">QColor</a> &cb, <a class="code" href="classKImageEffect.html#a5dd7fcdf794dd35c23082a1f5327cb74" title="This enum provides a gradient type specification.">GradientType</a> eff, <span class="keywordtype">int</span> ncols)
<a name="l00126"></a>00126 {
<a name="l00127"></a>00127 <span class="keywordtype">int</span> rDiff, gDiff, bDiff;
<a name="l00128"></a>00128 <span class="keywordtype">int</span> rca, gca, bca, rcb, gcb, bcb;
<a name="l00129"></a>00129
<a name="l00130"></a>00130 <a class="codeRef" href="qimage.html">QImage</a> image(size, 32);
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="keywordflow">if</span> (size.<a class="codeRef" href="qsize.html#width">width</a>() == 0 || size.<a class="codeRef" href="qsize.html#height">height</a>() == 0) {
<a name="l00133"></a>00133 <span class="preprocessor">#ifndef NDEBUG</span>
<a name="l00134"></a>00134 <span class="preprocessor"></span> std::cerr << <span class="stringliteral">"WARNING: KImageEffect::gradient: invalid image"</span> << <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/group__kdebug.html#ga313d520ed8f8f6b46eeef22cfb3b082a">std::endl</a>;
<a name="l00135"></a>00135 <span class="preprocessor">#endif</span>
<a name="l00136"></a>00136 <span class="preprocessor"></span> <span class="keywordflow">return</span> image;
<a name="l00137"></a>00137 }
<a name="l00138"></a>00138
<a name="l00139"></a>00139 <span class="keyword">register</span> <span class="keywordtype">int</span> x, y;
<a name="l00140"></a>00140
<a name="l00141"></a>00141 rDiff = (rcb = cb.<a class="codeRef" href="qcolor.html#red">red</a>()) - (rca = ca.<a class="codeRef" href="qcolor.html#red">red</a>());
<a name="l00142"></a>00142 gDiff = (gcb = cb.<a class="codeRef" href="qcolor.html#green">green</a>()) - (gca = ca.<a class="codeRef" href="qcolor.html#green">green</a>());
<a name="l00143"></a>00143 bDiff = (bcb = cb.<a class="codeRef" href="qcolor.html#blue">blue</a>()) - (bca = ca.<a class="codeRef" href="qcolor.html#blue">blue</a>());
<a name="l00144"></a>00144
<a name="l00145"></a>00145 <span class="keywordflow">if</span>( eff == VerticalGradient || eff == HorizontalGradient ){
<a name="l00146"></a>00146
<a name="l00147"></a>00147 uint *p;
<a name="l00148"></a>00148 uint rgb;
<a name="l00149"></a>00149
<a name="l00150"></a>00150 <span class="keyword">register</span> <span class="keywordtype">int</span> rl = rca << 16;
<a name="l00151"></a>00151 <span class="keyword">register</span> <span class="keywordtype">int</span> gl = gca << 16;
<a name="l00152"></a>00152 <span class="keyword">register</span> <span class="keywordtype">int</span> bl = bca << 16;
<a name="l00153"></a>00153
<a name="l00154"></a>00154 <span class="keywordflow">if</span>( eff == VerticalGradient ) {
<a name="l00155"></a>00155
<a name="l00156"></a>00156 <span class="keywordtype">int</span> rcdelta = ((1<<16) / size.<a class="codeRef" href="qsize.html#height">height</a>()) * rDiff;
<a name="l00157"></a>00157 <span class="keywordtype">int</span> gcdelta = ((1<<16) / size.<a class="codeRef" href="qsize.html#height">height</a>()) * gDiff;
<a name="l00158"></a>00158 <span class="keywordtype">int</span> bcdelta = ((1<<16) / size.<a class="codeRef" href="qsize.html#height">height</a>()) * bDiff;
<a name="l00159"></a>00159
<a name="l00160"></a>00160 <span class="keywordflow">for</span> ( y = 0; y < size.<a class="codeRef" href="qsize.html#height">height</a>(); y++ ) {
<a name="l00161"></a>00161 p = (uint *) image.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l00162"></a>00162
<a name="l00163"></a>00163 rl += rcdelta;
<a name="l00164"></a>00164 gl += gcdelta;
<a name="l00165"></a>00165 bl += bcdelta;
<a name="l00166"></a>00166
<a name="l00167"></a>00167 rgb = qRgb( (rl>>16), (gl>>16), (bl>>16) );
<a name="l00168"></a>00168
<a name="l00169"></a>00169 <span class="keywordflow">for</span>( x = 0; x < size.<a class="codeRef" href="qsize.html#width">width</a>(); x++ ) {
<a name="l00170"></a>00170 *p = rgb;
<a name="l00171"></a>00171 p++;
<a name="l00172"></a>00172 }
<a name="l00173"></a>00173 }
<a name="l00174"></a>00174
<a name="l00175"></a>00175 }
<a name="l00176"></a>00176 <span class="keywordflow">else</span> { <span class="comment">// must be HorizontalGradient</span>
<a name="l00177"></a>00177
<a name="l00178"></a>00178 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *o_src = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(0);
<a name="l00179"></a>00179 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *src = o_src;
<a name="l00180"></a>00180
<a name="l00181"></a>00181 <span class="keywordtype">int</span> rcdelta = ((1<<16) / size.<a class="codeRef" href="qsize.html#width">width</a>()) * rDiff;
<a name="l00182"></a>00182 <span class="keywordtype">int</span> gcdelta = ((1<<16) / size.<a class="codeRef" href="qsize.html#width">width</a>()) * gDiff;
<a name="l00183"></a>00183 <span class="keywordtype">int</span> bcdelta = ((1<<16) / size.<a class="codeRef" href="qsize.html#width">width</a>()) * bDiff;
<a name="l00184"></a>00184
<a name="l00185"></a>00185 <span class="keywordflow">for</span>( x = 0; x < size.<a class="codeRef" href="qsize.html#width">width</a>(); x++) {
<a name="l00186"></a>00186
<a name="l00187"></a>00187 rl += rcdelta;
<a name="l00188"></a>00188 gl += gcdelta;
<a name="l00189"></a>00189 bl += bcdelta;
<a name="l00190"></a>00190
<a name="l00191"></a>00191 *src++ = qRgb( (rl>>16), (gl>>16), (bl>>16));
<a name="l00192"></a>00192 }
<a name="l00193"></a>00193
<a name="l00194"></a>00194 src = o_src;
<a name="l00195"></a>00195
<a name="l00196"></a>00196 <span class="comment">// Believe it or not, manually copying in a for loop is faster</span>
<a name="l00197"></a>00197 <span class="comment">// than calling memcpy for each scanline (on the order of ms...).</span>
<a name="l00198"></a>00198 <span class="comment">// I think this is due to the function call overhead (mosfet).</span>
<a name="l00199"></a>00199
<a name="l00200"></a>00200 <span class="keywordflow">for</span> (y = 1; y < size.<a class="codeRef" href="qsize.html#height">height</a>(); ++y) {
<a name="l00201"></a>00201
<a name="l00202"></a>00202 p = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l00203"></a>00203 src = o_src;
<a name="l00204"></a>00204 <span class="keywordflow">for</span>(x=0; x < size.<a class="codeRef" href="qsize.html#width">width</a>(); ++x)
<a name="l00205"></a>00205 *p++ = *src++;
<a name="l00206"></a>00206 }
<a name="l00207"></a>00207 }
<a name="l00208"></a>00208 }
<a name="l00209"></a>00209
<a name="l00210"></a>00210 <span class="keywordflow">else</span> {
<a name="l00211"></a>00211
<a name="l00212"></a>00212 <span class="keywordtype">float</span> rfd, gfd, bfd;
<a name="l00213"></a>00213 <span class="keywordtype">float</span> rd = rca, gd = gca, bd = bca;
<a name="l00214"></a>00214
<a name="l00215"></a>00215 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *xtable[3];
<a name="l00216"></a>00216 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *ytable[3];
<a name="l00217"></a>00217
<a name="l00218"></a>00218 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> w = size.<a class="codeRef" href="qsize.html#width">width</a>(), h = size.<a class="codeRef" href="qsize.html#height">height</a>();
<a name="l00219"></a>00219 xtable[0] = <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[w];
<a name="l00220"></a>00220 xtable[1] = <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[w];
<a name="l00221"></a>00221 xtable[2] = <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[w];
<a name="l00222"></a>00222 ytable[0] = <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[h];
<a name="l00223"></a>00223 ytable[1] = <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[h];
<a name="l00224"></a>00224 ytable[2] = <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[h];
<a name="l00225"></a>00225 w*=2, h*=2;
<a name="l00226"></a>00226
<a name="l00227"></a>00227 <span class="keywordflow">if</span> ( eff == DiagonalGradient || eff == CrossDiagonalGradient) {
<a name="l00228"></a>00228 <span class="comment">// Diagonal dgradient code inspired by BlackBox (mosfet)</span>
<a name="l00229"></a>00229 <span class="comment">// BlackBox dgradient is (C) Brad Hughes, <bhughes@tcac.net> and</span>
<a name="l00230"></a>00230 <span class="comment">// Mike Cole <mike@mydot.com>.</span>
<a name="l00231"></a>00231
<a name="l00232"></a>00232 rfd = (float)rDiff/w;
<a name="l00233"></a>00233 gfd = (float)gDiff/w;
<a name="l00234"></a>00234 bfd = (float)bDiff/w;
<a name="l00235"></a>00235
<a name="l00236"></a>00236 <span class="keywordtype">int</span> dir;
<a name="l00237"></a>00237 <span class="keywordflow">for</span> (x = 0; x < size.<a class="codeRef" href="qsize.html#width">width</a>(); x++, rd+=rfd, gd+=gfd, bd+=bfd) {
<a name="l00238"></a>00238 dir = eff == DiagonalGradient? x : size.<a class="codeRef" href="qsize.html#width">width</a>() - x - 1;
<a name="l00239"></a>00239 xtable[0][dir] = (<span class="keywordtype">unsigned</span> char) rd;
<a name="l00240"></a>00240 xtable[1][dir] = (<span class="keywordtype">unsigned</span> char) gd;
<a name="l00241"></a>00241 xtable[2][dir] = (<span class="keywordtype">unsigned</span> char) bd;
<a name="l00242"></a>00242 }
<a name="l00243"></a>00243 rfd = (float)rDiff/h;
<a name="l00244"></a>00244 gfd = (float)gDiff/h;
<a name="l00245"></a>00245 bfd = (float)bDiff/h;
<a name="l00246"></a>00246 rd = gd = bd = 0;
<a name="l00247"></a>00247 <span class="keywordflow">for</span> (y = 0; y < size.<a class="codeRef" href="qsize.html#height">height</a>(); y++, rd+=rfd, gd+=gfd, bd+=bfd) {
<a name="l00248"></a>00248 ytable[0][y] = (<span class="keywordtype">unsigned</span> char) rd;
<a name="l00249"></a>00249 ytable[1][y] = (<span class="keywordtype">unsigned</span> char) gd;
<a name="l00250"></a>00250 ytable[2][y] = (<span class="keywordtype">unsigned</span> char) bd;
<a name="l00251"></a>00251 }
<a name="l00252"></a>00252
<a name="l00253"></a>00253 <span class="keywordflow">for</span> (y = 0; y < size.<a class="codeRef" href="qsize.html#height">height</a>(); y++) {
<a name="l00254"></a>00254 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *scanline = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l00255"></a>00255 <span class="keywordflow">for</span> (x = 0; x < size.<a class="codeRef" href="qsize.html#width">width</a>(); x++) {
<a name="l00256"></a>00256 scanline[x] = qRgb(xtable[0][x] + ytable[0][y],
<a name="l00257"></a>00257 xtable[1][x] + ytable[1][y],
<a name="l00258"></a>00258 xtable[2][x] + ytable[2][y]);
<a name="l00259"></a>00259 }
<a name="l00260"></a>00260 }
<a name="l00261"></a>00261 }
<a name="l00262"></a>00262
<a name="l00263"></a>00263 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (eff == RectangleGradient ||
<a name="l00264"></a>00264 eff == PyramidGradient ||
<a name="l00265"></a>00265 eff == PipeCrossGradient ||
<a name="l00266"></a>00266 eff == EllipticGradient)
<a name="l00267"></a>00267 {
<a name="l00268"></a>00268 <span class="keywordtype">int</span> rSign = rDiff>0? 1: -1;
<a name="l00269"></a>00269 <span class="keywordtype">int</span> gSign = gDiff>0? 1: -1;
<a name="l00270"></a>00270 <span class="keywordtype">int</span> bSign = bDiff>0? 1: -1;
<a name="l00271"></a>00271
<a name="l00272"></a>00272 rfd = (float)rDiff / size.<a class="codeRef" href="qsize.html#width">width</a>();
<a name="l00273"></a>00273 gfd = (float)gDiff / size.<a class="codeRef" href="qsize.html#width">width</a>();
<a name="l00274"></a>00274 bfd = (float)bDiff / size.<a class="codeRef" href="qsize.html#width">width</a>();
<a name="l00275"></a>00275
<a name="l00276"></a>00276 rd = (float)rDiff/2;
<a name="l00277"></a>00277 gd = (float)gDiff/2;
<a name="l00278"></a>00278 bd = (float)bDiff/2;
<a name="l00279"></a>00279
<a name="l00280"></a>00280 <span class="keywordflow">for</span> (x = 0; x < size.<a class="codeRef" href="qsize.html#width">width</a>(); x++, rd-=rfd, gd-=gfd, bd-=bfd)
<a name="l00281"></a>00281 {
<a name="l00282"></a>00282 xtable[0][x] = (<span class="keywordtype">unsigned</span> char) abs((<span class="keywordtype">int</span>)rd);
<a name="l00283"></a>00283 xtable[1][x] = (<span class="keywordtype">unsigned</span> char) abs((<span class="keywordtype">int</span>)gd);
<a name="l00284"></a>00284 xtable[2][x] = (<span class="keywordtype">unsigned</span> char) abs((<span class="keywordtype">int</span>)bd);
<a name="l00285"></a>00285 }
<a name="l00286"></a>00286
<a name="l00287"></a>00287 rfd = (float)rDiff/size.<a class="codeRef" href="qsize.html#height">height</a>();
<a name="l00288"></a>00288 gfd = (float)gDiff/size.<a class="codeRef" href="qsize.html#height">height</a>();
<a name="l00289"></a>00289 bfd = (float)bDiff/size.<a class="codeRef" href="qsize.html#height">height</a>();
<a name="l00290"></a>00290
<a name="l00291"></a>00291 rd = (float)rDiff/2;
<a name="l00292"></a>00292 gd = (float)gDiff/2;
<a name="l00293"></a>00293 bd = (float)bDiff/2;
<a name="l00294"></a>00294
<a name="l00295"></a>00295 <span class="keywordflow">for</span> (y = 0; y < size.<a class="codeRef" href="qsize.html#height">height</a>(); y++, rd-=rfd, gd-=gfd, bd-=bfd)
<a name="l00296"></a>00296 {
<a name="l00297"></a>00297 ytable[0][y] = (<span class="keywordtype">unsigned</span> char) abs((<span class="keywordtype">int</span>)rd);
<a name="l00298"></a>00298 ytable[1][y] = (<span class="keywordtype">unsigned</span> char) abs((<span class="keywordtype">int</span>)gd);
<a name="l00299"></a>00299 ytable[2][y] = (<span class="keywordtype">unsigned</span> char) abs((<span class="keywordtype">int</span>)bd);
<a name="l00300"></a>00300 }
<a name="l00301"></a>00301
<a name="l00302"></a>00302 <span class="keywordtype">int</span> h = (size.<a class="codeRef" href="qsize.html#height">height</a>()+1)>>1;
<a name="l00303"></a>00303 <span class="keywordflow">for</span> (y = 0; y < h; y++) {
<a name="l00304"></a>00304 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *sl1 = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l00305"></a>00305 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *sl2 = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(QMAX(size.<a class="codeRef" href="qsize.html#height">height</a>()-y-1, y));
<a name="l00306"></a>00306
<a name="l00307"></a>00307 <span class="keywordtype">int</span> w = (size.<a class="codeRef" href="qsize.html#width">width</a>()+1)>>1;
<a name="l00308"></a>00308 <span class="keywordtype">int</span> x2 = size.<a class="codeRef" href="qsize.html#width">width</a>()-1;
<a name="l00309"></a>00309
<a name="l00310"></a>00310 <span class="keywordflow">for</span> (x = 0; x < w; x++, x2--) {
<a name="l00311"></a>00311 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> rgb = 0;
<a name="l00312"></a>00312 <span class="keywordflow">if</span> (eff == PyramidGradient) {
<a name="l00313"></a>00313 rgb = qRgb(rcb-rSign*(xtable[0][x]+ytable[0][y]),
<a name="l00314"></a>00314 gcb-gSign*(xtable[1][x]+ytable[1][y]),
<a name="l00315"></a>00315 bcb-bSign*(xtable[2][x]+ytable[2][y]));
<a name="l00316"></a>00316 }
<a name="l00317"></a>00317 <span class="keywordflow">if</span> (eff == RectangleGradient) {
<a name="l00318"></a>00318 rgb = qRgb(rcb - rSign *
<a name="l00319"></a>00319 QMAX(xtable[0][x], ytable[0][y]) * 2,
<a name="l00320"></a>00320 gcb - gSign *
<a name="l00321"></a>00321 QMAX(xtable[1][x], ytable[1][y]) * 2,
<a name="l00322"></a>00322 bcb - bSign *
<a name="l00323"></a>00323 QMAX(xtable[2][x], ytable[2][y]) * 2);
<a name="l00324"></a>00324 }
<a name="l00325"></a>00325 <span class="keywordflow">if</span> (eff == PipeCrossGradient) {
<a name="l00326"></a>00326 rgb = qRgb(rcb - rSign *
<a name="l00327"></a>00327 QMIN(xtable[0][x], ytable[0][y]) * 2,
<a name="l00328"></a>00328 gcb - gSign *
<a name="l00329"></a>00329 QMIN(xtable[1][x], ytable[1][y]) * 2,
<a name="l00330"></a>00330 bcb - bSign *
<a name="l00331"></a>00331 QMIN(xtable[2][x], ytable[2][y]) * 2);
<a name="l00332"></a>00332 }
<a name="l00333"></a>00333 <span class="keywordflow">if</span> (eff == EllipticGradient) {
<a name="l00334"></a>00334 rgb = qRgb(rcb - rSign *
<a name="l00335"></a>00335 (<span class="keywordtype">int</span>)sqrt((xtable[0][x]*xtable[0][x] +
<a name="l00336"></a>00336 ytable[0][y]*ytable[0][y])*2.0),
<a name="l00337"></a>00337 gcb - gSign *
<a name="l00338"></a>00338 (<span class="keywordtype">int</span>)sqrt((xtable[1][x]*xtable[1][x] +
<a name="l00339"></a>00339 ytable[1][y]*ytable[1][y])*2.0),
<a name="l00340"></a>00340 bcb - bSign *
<a name="l00341"></a>00341 (<span class="keywordtype">int</span>)sqrt((xtable[2][x]*xtable[2][x] +
<a name="l00342"></a>00342 ytable[2][y]*ytable[2][y])*2.0));
<a name="l00343"></a>00343 }
<a name="l00344"></a>00344
<a name="l00345"></a>00345 sl1[x] = sl2[x] = rgb;
<a name="l00346"></a>00346 sl1[x2] = sl2[x2] = rgb;
<a name="l00347"></a>00347 }
<a name="l00348"></a>00348 }
<a name="l00349"></a>00349 }
<a name="l00350"></a>00350
<a name="l00351"></a>00351 <span class="keyword">delete</span> [] xtable[0];
<a name="l00352"></a>00352 <span class="keyword">delete</span> [] xtable[1];
<a name="l00353"></a>00353 <span class="keyword">delete</span> [] xtable[2];
<a name="l00354"></a>00354 <span class="keyword">delete</span> [] ytable[0];
<a name="l00355"></a>00355 <span class="keyword">delete</span> [] ytable[1];
<a name="l00356"></a>00356 <span class="keyword">delete</span> [] ytable[2];
<a name="l00357"></a>00357 }
<a name="l00358"></a>00358
<a name="l00359"></a>00359 <span class="comment">// dither if necessary</span>
<a name="l00360"></a>00360 <span class="keywordflow">if</span> (ncols && (<a class="codeRef" href="qpixmap.html#defaultDepth">QPixmap::defaultDepth</a>() < 15 )) {
<a name="l00361"></a>00361 <span class="keywordflow">if</span> ( ncols < 2 || ncols > 256 )
<a name="l00362"></a>00362 ncols = 3;
<a name="l00363"></a>00363 <a class="codeRef" href="qcolor.html">QColor</a> *dPal = <span class="keyword">new</span> <a class="codeRef" href="qcolor.html">QColor</a>[ncols];
<a name="l00364"></a>00364 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<ncols; i++) {
<a name="l00365"></a>00365 dPal[i].<a class="codeRef" href="qcolor.html#setRgb">setRgb</a> ( rca + rDiff * i / ( ncols - 1 ),
<a name="l00366"></a>00366 gca + gDiff * i / ( ncols - 1 ),
<a name="l00367"></a>00367 bca + bDiff * i / ( ncols - 1 ) );
<a name="l00368"></a>00368 }
<a name="l00369"></a>00369 <a class="code" href="classKImageEffect.html#aefbc2ab4ea203701a36016fcadb638af" title="Dither an image using Floyd-Steinberg dithering for low-color situations.">dither</a>(image, dPal, ncols);
<a name="l00370"></a>00370 <span class="keyword">delete</span> [] dPal;
<a name="l00371"></a>00371 }
<a name="l00372"></a>00372
<a name="l00373"></a>00373 <span class="keywordflow">return</span> image;
<a name="l00374"></a>00374 }
<a name="l00375"></a>00375
<a name="l00376"></a>00376
<a name="l00377"></a>00377 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00378"></a>00378
<a name="l00379"></a>00379 <span class="comment">//CT this was (before Dirk A. Mueller's speedup changes)</span>
<a name="l00380"></a>00380 <span class="comment">// merely the same code as in the above method, but it's supposedly</span>
<a name="l00381"></a>00381 <span class="comment">// way less performant since it introduces a lot of supplementary tests</span>
<a name="l00382"></a>00382 <span class="comment">// and simple math operations for the calculus of the balance.</span>
<a name="l00383"></a>00383 <span class="comment">// (surprizingly, it isn't less performant, in the contrary :-)</span>
<a name="l00384"></a>00384 <span class="comment">// Yes, I could have merged them, but then the excellent performance of</span>
<a name="l00385"></a>00385 <span class="comment">// the balanced code would suffer with no other gain than a mere</span>
<a name="l00386"></a>00386 <span class="comment">// source code and byte code size economy.</span>
<a name="l00387"></a>00387
<a name="l00388"></a><a class="code" href="classKImageEffect.html#abed1d6be036886e9137ba218c548da78">00388</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#abed1d6be036886e9137ba218c548da78" title="Create an unbalanced gradient.">KImageEffect::unbalancedGradient</a>(<span class="keyword">const</span> <a class="codeRef" href="qsize.html">QSize</a> &size, <span class="keyword">const</span> <a class="codeRef" href="qcolor.html">QColor</a> &ca,
<a name="l00389"></a>00389 <span class="keyword">const</span> <a class="codeRef" href="qcolor.html">QColor</a> &cb, <a class="code" href="classKImageEffect.html#a5dd7fcdf794dd35c23082a1f5327cb74" title="This enum provides a gradient type specification.">GradientType</a> eff, <span class="keywordtype">int</span> xfactor, <span class="keywordtype">int</span> yfactor,
<a name="l00390"></a>00390 <span class="keywordtype">int</span> ncols)
<a name="l00391"></a>00391 {
<a name="l00392"></a>00392 <span class="keywordtype">int</span> dir; <span class="comment">// general parameter used for direction switches</span>
<a name="l00393"></a>00393
<a name="l00394"></a>00394 <span class="keywordtype">bool</span> _xanti = false , _yanti = <span class="keyword">false</span>;
<a name="l00395"></a>00395
<a name="l00396"></a>00396 <span class="keywordflow">if</span> (xfactor < 0) _xanti = <span class="keyword">true</span>; <span class="comment">// negative on X direction</span>
<a name="l00397"></a>00397 <span class="keywordflow">if</span> (yfactor < 0) _yanti = <span class="keyword">true</span>; <span class="comment">// negative on Y direction</span>
<a name="l00398"></a>00398
<a name="l00399"></a>00399 xfactor = abs(xfactor);
<a name="l00400"></a>00400 yfactor = abs(yfactor);
<a name="l00401"></a>00401
<a name="l00402"></a>00402 <span class="keywordflow">if</span> (!xfactor) xfactor = 1;
<a name="l00403"></a>00403 <span class="keywordflow">if</span> (!yfactor) yfactor = 1;
<a name="l00404"></a>00404
<a name="l00405"></a>00405 <span class="keywordflow">if</span> (xfactor > 200 ) xfactor = 200;
<a name="l00406"></a>00406 <span class="keywordflow">if</span> (yfactor > 200 ) yfactor = 200;
<a name="l00407"></a>00407
<a name="l00408"></a>00408
<a name="l00409"></a>00409 <span class="comment">// float xbal = xfactor/5000.;</span>
<a name="l00410"></a>00410 <span class="comment">// float ybal = yfactor/5000.;</span>
<a name="l00411"></a>00411 <span class="keywordtype">float</span> xbal = xfactor/30./size.<a class="codeRef" href="qsize.html#width">width</a>();
<a name="l00412"></a>00412 <span class="keywordtype">float</span> ybal = yfactor/30./size.<a class="codeRef" href="qsize.html#height">height</a>();
<a name="l00413"></a>00413 <span class="keywordtype">float</span> rat;
<a name="l00414"></a>00414
<a name="l00415"></a>00415 <span class="keywordtype">int</span> rDiff, gDiff, bDiff;
<a name="l00416"></a>00416 <span class="keywordtype">int</span> rca, gca, bca, rcb, gcb, bcb;
<a name="l00417"></a>00417
<a name="l00418"></a>00418 <a class="codeRef" href="qimage.html">QImage</a> image(size, 32);
<a name="l00419"></a>00419
<a name="l00420"></a>00420 <span class="keywordflow">if</span> (size.<a class="codeRef" href="qsize.html#width">width</a>() == 0 || size.<a class="codeRef" href="qsize.html#height">height</a>() == 0) {
<a name="l00421"></a>00421 <span class="preprocessor">#ifndef NDEBUG</span>
<a name="l00422"></a>00422 <span class="preprocessor"></span> std::cerr << <span class="stringliteral">"WARNING: KImageEffect::unbalancedGradient : invalid image\n"</span>;
<a name="l00423"></a>00423 <span class="preprocessor">#endif</span>
<a name="l00424"></a>00424 <span class="preprocessor"></span> <span class="keywordflow">return</span> image;
<a name="l00425"></a>00425 }
<a name="l00426"></a>00426
<a name="l00427"></a>00427 <span class="keyword">register</span> <span class="keywordtype">int</span> x, y;
<a name="l00428"></a>00428 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *scanline;
<a name="l00429"></a>00429
<a name="l00430"></a>00430 rDiff = (rcb = cb.<a class="codeRef" href="qcolor.html#red">red</a>()) - (rca = ca.<a class="codeRef" href="qcolor.html#red">red</a>());
<a name="l00431"></a>00431 gDiff = (gcb = cb.<a class="codeRef" href="qcolor.html#green">green</a>()) - (gca = ca.<a class="codeRef" href="qcolor.html#green">green</a>());
<a name="l00432"></a>00432 bDiff = (bcb = cb.<a class="codeRef" href="qcolor.html#blue">blue</a>()) - (bca = ca.<a class="codeRef" href="qcolor.html#blue">blue</a>());
<a name="l00433"></a>00433
<a name="l00434"></a>00434 <span class="keywordflow">if</span>( eff == VerticalGradient || eff == HorizontalGradient){
<a name="l00435"></a>00435 <a class="codeRef" href="qcolor.html">QColor</a> cRow;
<a name="l00436"></a>00436
<a name="l00437"></a>00437 uint *p;
<a name="l00438"></a>00438 uint rgbRow;
<a name="l00439"></a>00439
<a name="l00440"></a>00440 <span class="keywordflow">if</span>( eff == VerticalGradient) {
<a name="l00441"></a>00441 <span class="keywordflow">for</span> ( y = 0; y < size.<a class="codeRef" href="qsize.html#height">height</a>(); y++ ) {
<a name="l00442"></a>00442 dir = _yanti ? y : size.<a class="codeRef" href="qsize.html#height">height</a>() - 1 - y;
<a name="l00443"></a>00443 p = (uint *) image.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(dir);
<a name="l00444"></a>00444 rat = 1 - exp( - (<span class="keywordtype">float</span>)y * ybal );
<a name="l00445"></a>00445
<a name="l00446"></a>00446 cRow.<a class="codeRef" href="qcolor.html#setRgb">setRgb</a>( rcb - (<span class="keywordtype">int</span>) ( rDiff * rat ),
<a name="l00447"></a>00447 gcb - (<span class="keywordtype">int</span>) ( gDiff * rat ),
<a name="l00448"></a>00448 bcb - (<span class="keywordtype">int</span>) ( bDiff * rat ) );
<a name="l00449"></a>00449
<a name="l00450"></a>00450 rgbRow = cRow.<a class="codeRef" href="qcolor.html#rgb">rgb</a>();
<a name="l00451"></a>00451
<a name="l00452"></a>00452 <span class="keywordflow">for</span>( x = 0; x < size.<a class="codeRef" href="qsize.html#width">width</a>(); x++ ) {
<a name="l00453"></a>00453 *p = rgbRow;
<a name="l00454"></a>00454 p++;
<a name="l00455"></a>00455 }
<a name="l00456"></a>00456 }
<a name="l00457"></a>00457 }
<a name="l00458"></a>00458 <span class="keywordflow">else</span> {
<a name="l00459"></a>00459
<a name="l00460"></a>00460 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *src = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(0);
<a name="l00461"></a>00461 <span class="keywordflow">for</span>(x = 0; x < size.<a class="codeRef" href="qsize.html#width">width</a>(); x++ )
<a name="l00462"></a>00462 {
<a name="l00463"></a>00463 dir = _xanti ? x : size.<a class="codeRef" href="qsize.html#width">width</a>() - 1 - x;
<a name="l00464"></a>00464 rat = 1 - exp( - (<span class="keywordtype">float</span>)x * xbal );
<a name="l00465"></a>00465
<a name="l00466"></a>00466 src[dir] = qRgb(rcb - (<span class="keywordtype">int</span>) ( rDiff * rat ),
<a name="l00467"></a>00467 gcb - (<span class="keywordtype">int</span>) ( gDiff * rat ),
<a name="l00468"></a>00468 bcb - (<span class="keywordtype">int</span>) ( bDiff * rat ));
<a name="l00469"></a>00469 }
<a name="l00470"></a>00470
<a name="l00471"></a>00471 <span class="comment">// Believe it or not, manually copying in a for loop is faster</span>
<a name="l00472"></a>00472 <span class="comment">// than calling memcpy for each scanline (on the order of ms...).</span>
<a name="l00473"></a>00473 <span class="comment">// I think this is due to the function call overhead (mosfet).</span>
<a name="l00474"></a>00474
<a name="l00475"></a>00475 <span class="keywordflow">for</span>(y = 1; y < size.<a class="codeRef" href="qsize.html#height">height</a>(); ++y)
<a name="l00476"></a>00476 {
<a name="l00477"></a>00477 scanline = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l00478"></a>00478 <span class="keywordflow">for</span>(x=0; x < size.<a class="codeRef" href="qsize.html#width">width</a>(); ++x)
<a name="l00479"></a>00479 scanline[x] = src[x];
<a name="l00480"></a>00480 }
<a name="l00481"></a>00481 }
<a name="l00482"></a>00482 }
<a name="l00483"></a>00483
<a name="l00484"></a>00484 <span class="keywordflow">else</span> {
<a name="l00485"></a>00485 <span class="keywordtype">int</span> w=size.<a class="codeRef" href="qsize.html#width">width</a>(), h=size.<a class="codeRef" href="qsize.html#height">height</a>();
<a name="l00486"></a>00486
<a name="l00487"></a>00487 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *xtable[3];
<a name="l00488"></a>00488 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *ytable[3];
<a name="l00489"></a>00489 xtable[0] = <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[w];
<a name="l00490"></a>00490 xtable[1] = <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[w];
<a name="l00491"></a>00491 xtable[2] = <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[w];
<a name="l00492"></a>00492 ytable[0] = <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[h];
<a name="l00493"></a>00493 ytable[1] = <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[h];
<a name="l00494"></a>00494 ytable[2] = <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[h];
<a name="l00495"></a>00495
<a name="l00496"></a>00496 <span class="keywordflow">if</span> ( eff == DiagonalGradient || eff == CrossDiagonalGradient)
<a name="l00497"></a>00497 {
<a name="l00498"></a>00498 <span class="keywordflow">for</span> (x = 0; x < w; x++) {
<a name="l00499"></a>00499 dir = _xanti ? x : w - 1 - x;
<a name="l00500"></a>00500 rat = 1 - exp( - (<span class="keywordtype">float</span>)x * xbal );
<a name="l00501"></a>00501
<a name="l00502"></a>00502 xtable[0][dir] = (<span class="keywordtype">unsigned</span> char) ( rDiff/2 * rat );
<a name="l00503"></a>00503 xtable[1][dir] = (<span class="keywordtype">unsigned</span> char) ( gDiff/2 * rat );
<a name="l00504"></a>00504 xtable[2][dir] = (<span class="keywordtype">unsigned</span> char) ( bDiff/2 * rat );
<a name="l00505"></a>00505 }
<a name="l00506"></a>00506
<a name="l00507"></a>00507 <span class="keywordflow">for</span> (y = 0; y < h; y++) {
<a name="l00508"></a>00508 dir = _yanti ? y : h - 1 - y;
<a name="l00509"></a>00509 rat = 1 - exp( - (<span class="keywordtype">float</span>)y * ybal );
<a name="l00510"></a>00510
<a name="l00511"></a>00511 ytable[0][dir] = (<span class="keywordtype">unsigned</span> char) ( rDiff/2 * rat );
<a name="l00512"></a>00512 ytable[1][dir] = (<span class="keywordtype">unsigned</span> char) ( gDiff/2 * rat );
<a name="l00513"></a>00513 ytable[2][dir] = (<span class="keywordtype">unsigned</span> char) ( bDiff/2 * rat );
<a name="l00514"></a>00514 }
<a name="l00515"></a>00515
<a name="l00516"></a>00516 <span class="keywordflow">for</span> (y = 0; y < h; y++) {
<a name="l00517"></a>00517 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *scanline = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l00518"></a>00518 <span class="keywordflow">for</span> (x = 0; x < w; x++) {
<a name="l00519"></a>00519 scanline[x] = qRgb(rcb - (xtable[0][x] + ytable[0][y]),
<a name="l00520"></a>00520 gcb - (xtable[1][x] + ytable[1][y]),
<a name="l00521"></a>00521 bcb - (xtable[2][x] + ytable[2][y]));
<a name="l00522"></a>00522 }
<a name="l00523"></a>00523 }
<a name="l00524"></a>00524 }
<a name="l00525"></a>00525
<a name="l00526"></a>00526 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (eff == RectangleGradient ||
<a name="l00527"></a>00527 eff == PyramidGradient ||
<a name="l00528"></a>00528 eff == PipeCrossGradient ||
<a name="l00529"></a>00529 eff == EllipticGradient)
<a name="l00530"></a>00530 {
<a name="l00531"></a>00531 <span class="keywordtype">int</span> rSign = rDiff>0? 1: -1;
<a name="l00532"></a>00532 <span class="keywordtype">int</span> gSign = gDiff>0? 1: -1;
<a name="l00533"></a>00533 <span class="keywordtype">int</span> bSign = bDiff>0? 1: -1;
<a name="l00534"></a>00534
<a name="l00535"></a>00535 <span class="keywordflow">for</span> (x = 0; x < w; x++)
<a name="l00536"></a>00536 {
<a name="l00537"></a>00537 dir = _xanti ? x : w - 1 - x;
<a name="l00538"></a>00538 rat = 1 - exp( - (<span class="keywordtype">float</span>)x * xbal );
<a name="l00539"></a>00539
<a name="l00540"></a>00540 xtable[0][dir] = (<span class="keywordtype">unsigned</span> char) abs((<span class="keywordtype">int</span>)(rDiff*(0.5-rat)));
<a name="l00541"></a>00541 xtable[1][dir] = (<span class="keywordtype">unsigned</span> char) abs((<span class="keywordtype">int</span>)(gDiff*(0.5-rat)));
<a name="l00542"></a>00542 xtable[2][dir] = (<span class="keywordtype">unsigned</span> char) abs((<span class="keywordtype">int</span>)(bDiff*(0.5-rat)));
<a name="l00543"></a>00543 }
<a name="l00544"></a>00544
<a name="l00545"></a>00545 <span class="keywordflow">for</span> (y = 0; y < h; y++)
<a name="l00546"></a>00546 {
<a name="l00547"></a>00547 dir = _yanti ? y : h - 1 - y;
<a name="l00548"></a>00548
<a name="l00549"></a>00549 rat = 1 - exp( - (<span class="keywordtype">float</span>)y * ybal );
<a name="l00550"></a>00550
<a name="l00551"></a>00551 ytable[0][dir] = (<span class="keywordtype">unsigned</span> char) abs((<span class="keywordtype">int</span>)(rDiff*(0.5-rat)));
<a name="l00552"></a>00552 ytable[1][dir] = (<span class="keywordtype">unsigned</span> char) abs((<span class="keywordtype">int</span>)(gDiff*(0.5-rat)));
<a name="l00553"></a>00553 ytable[2][dir] = (<span class="keywordtype">unsigned</span> char) abs((<span class="keywordtype">int</span>)(bDiff*(0.5-rat)));
<a name="l00554"></a>00554 }
<a name="l00555"></a>00555
<a name="l00556"></a>00556 <span class="keywordflow">for</span> (y = 0; y < h; y++) {
<a name="l00557"></a>00557 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *scanline = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l00558"></a>00558 <span class="keywordflow">for</span> (x = 0; x < w; x++) {
<a name="l00559"></a>00559 <span class="keywordflow">if</span> (eff == PyramidGradient)
<a name="l00560"></a>00560 {
<a name="l00561"></a>00561 scanline[x] = qRgb(rcb-rSign*(xtable[0][x]+ytable[0][y]),
<a name="l00562"></a>00562 gcb-gSign*(xtable[1][x]+ytable[1][y]),
<a name="l00563"></a>00563 bcb-bSign*(xtable[2][x]+ytable[2][y]));
<a name="l00564"></a>00564 }
<a name="l00565"></a>00565 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (eff == RectangleGradient)
<a name="l00566"></a>00566 {
<a name="l00567"></a>00567 scanline[x] = qRgb(rcb - rSign *
<a name="l00568"></a>00568 QMAX(xtable[0][x], ytable[0][y]) * 2,
<a name="l00569"></a>00569 gcb - gSign *
<a name="l00570"></a>00570 QMAX(xtable[1][x], ytable[1][y]) * 2,
<a name="l00571"></a>00571 bcb - bSign *
<a name="l00572"></a>00572 QMAX(xtable[2][x], ytable[2][y]) * 2);
<a name="l00573"></a>00573 }
<a name="l00574"></a>00574 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (eff == PipeCrossGradient)
<a name="l00575"></a>00575 {
<a name="l00576"></a>00576 scanline[x] = qRgb(rcb - rSign *
<a name="l00577"></a>00577 QMIN(xtable[0][x], ytable[0][y]) * 2,
<a name="l00578"></a>00578 gcb - gSign *
<a name="l00579"></a>00579 QMIN(xtable[1][x], ytable[1][y]) * 2,
<a name="l00580"></a>00580 bcb - bSign *
<a name="l00581"></a>00581 QMIN(xtable[2][x], ytable[2][y]) * 2);
<a name="l00582"></a>00582 }
<a name="l00583"></a>00583 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (eff == EllipticGradient)
<a name="l00584"></a>00584 {
<a name="l00585"></a>00585 scanline[x] = qRgb(rcb - rSign *
<a name="l00586"></a>00586 (<span class="keywordtype">int</span>)sqrt((xtable[0][x]*xtable[0][x] +
<a name="l00587"></a>00587 ytable[0][y]*ytable[0][y])*2.0),
<a name="l00588"></a>00588 gcb - gSign *
<a name="l00589"></a>00589 (<span class="keywordtype">int</span>)sqrt((xtable[1][x]*xtable[1][x] +
<a name="l00590"></a>00590 ytable[1][y]*ytable[1][y])*2.0),
<a name="l00591"></a>00591 bcb - bSign *
<a name="l00592"></a>00592 (<span class="keywordtype">int</span>)sqrt((xtable[2][x]*xtable[2][x] +
<a name="l00593"></a>00593 ytable[2][y]*ytable[2][y])*2.0));
<a name="l00594"></a>00594 }
<a name="l00595"></a>00595 }
<a name="l00596"></a>00596 }
<a name="l00597"></a>00597 }
<a name="l00598"></a>00598
<a name="l00599"></a>00599 <span class="keywordflow">if</span> (ncols && (<a class="codeRef" href="qpixmap.html#defaultDepth">QPixmap::defaultDepth</a>() < 15 )) {
<a name="l00600"></a>00600 <span class="keywordflow">if</span> ( ncols < 2 || ncols > 256 )
<a name="l00601"></a>00601 ncols = 3;
<a name="l00602"></a>00602 <a class="codeRef" href="qcolor.html">QColor</a> *dPal = <span class="keyword">new</span> <a class="codeRef" href="qcolor.html">QColor</a>[ncols];
<a name="l00603"></a>00603 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<ncols; i++) {
<a name="l00604"></a>00604 dPal[i].<a class="codeRef" href="qcolor.html#setRgb">setRgb</a> ( rca + rDiff * i / ( ncols - 1 ),
<a name="l00605"></a>00605 gca + gDiff * i / ( ncols - 1 ),
<a name="l00606"></a>00606 bca + bDiff * i / ( ncols - 1 ) );
<a name="l00607"></a>00607 }
<a name="l00608"></a>00608 <a class="code" href="classKImageEffect.html#aefbc2ab4ea203701a36016fcadb638af" title="Dither an image using Floyd-Steinberg dithering for low-color situations.">dither</a>(image, dPal, ncols);
<a name="l00609"></a>00609 <span class="keyword">delete</span> [] dPal;
<a name="l00610"></a>00610 }
<a name="l00611"></a>00611
<a name="l00612"></a>00612 <span class="keyword">delete</span> [] xtable[0];
<a name="l00613"></a>00613 <span class="keyword">delete</span> [] xtable[1];
<a name="l00614"></a>00614 <span class="keyword">delete</span> [] xtable[2];
<a name="l00615"></a>00615 <span class="keyword">delete</span> [] ytable[0];
<a name="l00616"></a>00616 <span class="keyword">delete</span> [] ytable[1];
<a name="l00617"></a>00617 <span class="keyword">delete</span> [] ytable[2];
<a name="l00618"></a>00618
<a name="l00619"></a>00619 }
<a name="l00620"></a>00620
<a name="l00621"></a>00621 <span class="keywordflow">return</span> image;
<a name="l00622"></a>00622 }
<a name="l00623"></a>00623
<a name="l00627"></a>00627 <span class="keyword">namespace </span>{
<a name="l00628"></a>00628
<a name="l00629"></a>00629 <span class="keyword">struct </span>KIE4Pack
<a name="l00630"></a>00630 {
<a name="l00631"></a>00631 Q_UINT16 data[4];
<a name="l00632"></a>00632 };
<a name="l00633"></a>00633
<a name="l00634"></a>00634 <span class="keyword">struct </span>KIE8Pack
<a name="l00635"></a>00635 {
<a name="l00636"></a>00636 Q_UINT16 data[8];
<a name="l00637"></a>00637 };
<a name="l00638"></a>00638
<a name="l00639"></a>00639 }
<a name="l00640"></a>00640
<a name="l00641"></a>00641 <span class="comment">//======================================================================</span>
<a name="l00642"></a>00642 <span class="comment">//</span>
<a name="l00643"></a>00643 <span class="comment">// Intensity effects</span>
<a name="l00644"></a>00644 <span class="comment">//</span>
<a name="l00645"></a>00645 <span class="comment">//======================================================================</span>
<a name="l00646"></a>00646
<a name="l00647"></a>00647
<a name="l00648"></a>00648 <span class="comment">/* This builds a 256 byte unsigned char lookup table with all</span>
<a name="l00649"></a>00649 <span class="comment"> * the possible percent values prior to applying the effect, then uses</span>
<a name="l00650"></a>00650 <span class="comment"> * integer math for the pixels. For any image larger than 9x9 this will be</span>
<a name="l00651"></a>00651 <span class="comment"> * less expensive than doing a float operation on the 3 color components of</span>
<a name="l00652"></a>00652 <span class="comment"> * each pixel. (mosfet)</span>
<a name="l00653"></a>00653 <span class="comment"> */</span>
<a name="l00654"></a><a class="code" href="classKImageEffect.html#a02114d1df26d4b8905cfd97d01559991">00654</a> <a class="codeRef" href="qimage.html">QImage</a>& <a class="code" href="classKImageEffect.html#a02114d1df26d4b8905cfd97d01559991" title="Either brighten or dim the image by a specified percent.">KImageEffect::intensity</a>(<a class="codeRef" href="qimage.html">QImage</a> &image, <span class="keywordtype">float</span> percent)
<a name="l00655"></a>00655 {
<a name="l00656"></a>00656 <span class="keywordflow">if</span> (image.<a class="codeRef" href="qimage.html#width">width</a>() == 0 || image.<a class="codeRef" href="qimage.html#height">height</a>() == 0) {
<a name="l00657"></a>00657 <span class="preprocessor">#ifndef NDEBUG</span>
<a name="l00658"></a>00658 <span class="preprocessor"></span> std::cerr << <span class="stringliteral">"WARNING: KImageEffect::intensity : invalid image\n"</span>;
<a name="l00659"></a>00659 <span class="preprocessor">#endif</span>
<a name="l00660"></a>00660 <span class="preprocessor"></span> <span class="keywordflow">return</span> image;
<a name="l00661"></a>00661 }
<a name="l00662"></a>00662
<a name="l00663"></a>00663 <span class="keywordtype">int</span> segColors = image.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8 ? 256 : image.<a class="codeRef" href="qimage.html#numColors">numColors</a>();
<a name="l00664"></a>00664 <span class="keywordtype">int</span> pixels = image.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8 ? image.<a class="codeRef" href="qimage.html#width">width</a>()*image.<a class="codeRef" href="qimage.html#height">height</a>() :
<a name="l00665"></a>00665 image.<a class="codeRef" href="qimage.html#numColors">numColors</a>();
<a name="l00666"></a>00666 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *data = image.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8 ? (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image.<a class="codeRef" href="qimage.html#bits">bits</a>() :
<a name="l00667"></a>00667 (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l00668"></a>00668
<a name="l00669"></a>00669 <span class="keywordtype">bool</span> brighten = (percent >= 0);
<a name="l00670"></a>00670 <span class="keywordflow">if</span>(percent < 0)
<a name="l00671"></a>00671 percent = -percent;
<a name="l00672"></a>00672
<a name="l00673"></a>00673 <span class="preprocessor">#ifdef USE_MMX_INLINE_ASM</span>
<a name="l00674"></a>00674 <span class="preprocessor"></span> <span class="keywordtype">bool</span> haveMMX = <a class="code" href="classKCPUInfo.html#a4c4dde7c9f4549591681b706fd26f396" title="Returns true if the processor supports extension, and false otherwise.">KCPUInfo::haveExtension</a>( <a class="code" href="classKCPUInfo.html#adaead16555bac8cd592d9ea885138400af247dfcf2e89d3acd449020636ab3902" title="Intel's MMX instructions.">KCPUInfo::IntelMMX</a> );
<a name="l00675"></a>00675
<a name="l00676"></a>00676 <span class="keywordflow">if</span>(haveMMX)
<a name="l00677"></a>00677 {
<a name="l00678"></a>00678 Q_UINT16 p = Q_UINT16(256.0f*(percent));
<a name="l00679"></a>00679 KIE4Pack mult = {{p,p,p,0}};
<a name="l00680"></a>00680
<a name="l00681"></a>00681 __asm__ __volatile__(
<a name="l00682"></a>00682 <span class="stringliteral">"pxor %%mm7, %%mm7\n\t"</span> <span class="comment">// zero mm7 for unpacking</span>
<a name="l00683"></a>00683 <span class="stringliteral">"movq (%0), %%mm6\n\t"</span> <span class="comment">// copy intensity change to mm6</span>
<a name="l00684"></a>00684 : : <span class="stringliteral">"r"</span>(&mult), <span class="stringliteral">"m"</span>(mult));
<a name="l00685"></a>00685
<a name="l00686"></a>00686 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> rem = pixels % 4;
<a name="l00687"></a>00687 pixels -= rem;
<a name="l00688"></a>00688 Q_UINT32 *end = ( data + pixels );
<a name="l00689"></a>00689
<a name="l00690"></a>00690 <span class="keywordflow">if</span> (brighten)
<a name="l00691"></a>00691 {
<a name="l00692"></a>00692 <span class="keywordflow">while</span> ( data != end ) {
<a name="l00693"></a>00693 __asm__ __volatile__(
<a name="l00694"></a>00694 <span class="stringliteral">"movq (%0), %%mm0\n\t"</span>
<a name="l00695"></a>00695 <span class="stringliteral">"movq 8(%0), %%mm4\n\t"</span> <span class="comment">// copy 4 pixels of data to mm0 and mm4</span>
<a name="l00696"></a>00696 <span class="stringliteral">"movq %%mm0, %%mm1\n\t"</span>
<a name="l00697"></a>00697 <span class="stringliteral">"movq %%mm0, %%mm3\n\t"</span>
<a name="l00698"></a>00698 <span class="stringliteral">"movq %%mm4, %%mm5\n\t"</span> <span class="comment">// copy to registers for unpacking</span>
<a name="l00699"></a>00699 <span class="stringliteral">"punpcklbw %%mm7, %%mm0\n\t"</span>
<a name="l00700"></a>00700 <span class="stringliteral">"punpckhbw %%mm7, %%mm1\n\t"</span> <span class="comment">// unpack the two pixels from mm0</span>
<a name="l00701"></a>00701 <span class="stringliteral">"pmullw %%mm6, %%mm0\n\t"</span>
<a name="l00702"></a>00702 <span class="stringliteral">"punpcklbw %%mm7, %%mm4\n\t"</span>
<a name="l00703"></a>00703 <span class="stringliteral">"pmullw %%mm6, %%mm1\n\t"</span> <span class="comment">// multiply by intensity*256</span>
<a name="l00704"></a>00704 <span class="stringliteral">"psrlw $8, %%mm0\n\t"</span> <span class="comment">// divide by 256</span>
<a name="l00705"></a>00705 <span class="stringliteral">"pmullw %%mm6, %%mm4\n\t"</span>
<a name="l00706"></a>00706 <span class="stringliteral">"psrlw $8, %%mm1\n\t"</span>
<a name="l00707"></a>00707 <span class="stringliteral">"psrlw $8, %%mm4\n\t"</span>
<a name="l00708"></a>00708 <span class="stringliteral">"packuswb %%mm1, %%mm0\n\t"</span> <span class="comment">// pack solution into mm0. saturates at 255</span>
<a name="l00709"></a>00709 <span class="stringliteral">"movq %%mm5, %%mm1\n\t"</span>
<a name="l00710"></a>00710
<a name="l00711"></a>00711 <span class="stringliteral">"punpckhbw %%mm7, %%mm1\n\t"</span> <span class="comment">// unpack 4th pixel in mm1</span>
<a name="l00712"></a>00712
<a name="l00713"></a>00713 <span class="stringliteral">"pmullw %%mm6, %%mm1\n\t"</span>
<a name="l00714"></a>00714 <span class="stringliteral">"paddusb %%mm3, %%mm0\n\t"</span> <span class="comment">// add intesity result to original of mm0</span>
<a name="l00715"></a>00715 <span class="stringliteral">"psrlw $8, %%mm1\n\t"</span>
<a name="l00716"></a>00716 <span class="stringliteral">"packuswb %%mm1, %%mm4\n\t"</span> <span class="comment">// pack upper two pixels into mm4</span>
<a name="l00717"></a>00717
<a name="l00718"></a>00718 <span class="stringliteral">"movq %%mm0, (%0)\n\t"</span> <span class="comment">// rewrite to memory lower two pixels</span>
<a name="l00719"></a>00719 <span class="stringliteral">"paddusb %%mm5, %%mm4\n\t"</span>
<a name="l00720"></a>00720 <span class="stringliteral">"movq %%mm4, 8(%0)\n\t"</span> <span class="comment">// rewrite upper two pixels</span>
<a name="l00721"></a>00721 : : <span class="stringliteral">"r"</span>(data) );
<a name="l00722"></a>00722 data += 4;
<a name="l00723"></a>00723 }
<a name="l00724"></a>00724
<a name="l00725"></a>00725 end += rem;
<a name="l00726"></a>00726 <span class="keywordflow">while</span> ( data != end ) {
<a name="l00727"></a>00727 __asm__ __volatile__(
<a name="l00728"></a>00728 <span class="stringliteral">"movd (%0), %%mm0\n\t"</span> <span class="comment">// repeat above but for</span>
<a name="l00729"></a>00729 <span class="stringliteral">"punpcklbw %%mm7, %%mm0\n\t"</span> <span class="comment">// one pixel at a time</span>
<a name="l00730"></a>00730 <span class="stringliteral">"movq %%mm0, %%mm3\n\t"</span>
<a name="l00731"></a>00731 <span class="stringliteral">"pmullw %%mm6, %%mm0\n\t"</span>
<a name="l00732"></a>00732 <span class="stringliteral">"psrlw $8, %%mm0\n\t"</span>
<a name="l00733"></a>00733 <span class="stringliteral">"paddw %%mm3, %%mm0\n\t"</span>
<a name="l00734"></a>00734 <span class="stringliteral">"packuswb %%mm0, %%mm0\n\t"</span>
<a name="l00735"></a>00735 <span class="stringliteral">"movd %%mm0, (%0)\n\t"</span>
<a name="l00736"></a>00736 : : <span class="stringliteral">"r"</span>(data) );
<a name="l00737"></a>00737 data++;
<a name="l00738"></a>00738 }
<a name="l00739"></a>00739 }
<a name="l00740"></a>00740 <span class="keywordflow">else</span>
<a name="l00741"></a>00741 {
<a name="l00742"></a>00742 <span class="keywordflow">while</span> ( data != end ) {
<a name="l00743"></a>00743 __asm__ __volatile__(
<a name="l00744"></a>00744 <span class="stringliteral">"movq (%0), %%mm0\n\t"</span>
<a name="l00745"></a>00745 <span class="stringliteral">"movq 8(%0), %%mm4\n\t"</span>
<a name="l00746"></a>00746 <span class="stringliteral">"movq %%mm0, %%mm1\n\t"</span>
<a name="l00747"></a>00747 <span class="stringliteral">"movq %%mm0, %%mm3\n\t"</span>
<a name="l00748"></a>00748
<a name="l00749"></a>00749 <span class="stringliteral">"movq %%mm4, %%mm5\n\t"</span>
<a name="l00750"></a>00750
<a name="l00751"></a>00751 <span class="stringliteral">"punpcklbw %%mm7, %%mm0\n\t"</span>
<a name="l00752"></a>00752 <span class="stringliteral">"punpckhbw %%mm7, %%mm1\n\t"</span>
<a name="l00753"></a>00753 <span class="stringliteral">"pmullw %%mm6, %%mm0\n\t"</span>
<a name="l00754"></a>00754 <span class="stringliteral">"punpcklbw %%mm7, %%mm4\n\t"</span>
<a name="l00755"></a>00755 <span class="stringliteral">"pmullw %%mm6, %%mm1\n\t"</span>
<a name="l00756"></a>00756 <span class="stringliteral">"psrlw $8, %%mm0\n\t"</span>
<a name="l00757"></a>00757 <span class="stringliteral">"pmullw %%mm6, %%mm4\n\t"</span>
<a name="l00758"></a>00758 <span class="stringliteral">"psrlw $8, %%mm1\n\t"</span>
<a name="l00759"></a>00759 <span class="stringliteral">"psrlw $8, %%mm4\n\t"</span>
<a name="l00760"></a>00760 <span class="stringliteral">"packuswb %%mm1, %%mm0\n\t"</span>
<a name="l00761"></a>00761 <span class="stringliteral">"movq %%mm5, %%mm1\n\t"</span>
<a name="l00762"></a>00762
<a name="l00763"></a>00763 <span class="stringliteral">"punpckhbw %%mm7, %%mm1\n\t"</span>
<a name="l00764"></a>00764
<a name="l00765"></a>00765 <span class="stringliteral">"pmullw %%mm6, %%mm1\n\t"</span>
<a name="l00766"></a>00766 <span class="stringliteral">"psubusb %%mm0, %%mm3\n\t"</span> <span class="comment">// subtract darkening amount</span>
<a name="l00767"></a>00767 <span class="stringliteral">"psrlw $8, %%mm1\n\t"</span>
<a name="l00768"></a>00768 <span class="stringliteral">"packuswb %%mm1, %%mm4\n\t"</span>
<a name="l00769"></a>00769
<a name="l00770"></a>00770 <span class="stringliteral">"movq %%mm3, (%0)\n\t"</span>
<a name="l00771"></a>00771 <span class="stringliteral">"psubusb %%mm4, %%mm5\n\t"</span> <span class="comment">// only change for this version is</span>
<a name="l00772"></a>00772 <span class="stringliteral">"movq %%mm5, 8(%0)\n\t"</span> <span class="comment">// subtraction here as we are darkening image</span>
<a name="l00773"></a>00773 : : <span class="stringliteral">"r"</span>(data) );
<a name="l00774"></a>00774 data += 4;
<a name="l00775"></a>00775 }
<a name="l00776"></a>00776
<a name="l00777"></a>00777 end += rem;
<a name="l00778"></a>00778 <span class="keywordflow">while</span> ( data != end ) {
<a name="l00779"></a>00779 __asm__ __volatile__(
<a name="l00780"></a>00780 <span class="stringliteral">"movd (%0), %%mm0\n\t"</span>
<a name="l00781"></a>00781 <span class="stringliteral">"punpcklbw %%mm7, %%mm0\n\t"</span>
<a name="l00782"></a>00782 <span class="stringliteral">"movq %%mm0, %%mm3\n\t"</span>
<a name="l00783"></a>00783 <span class="stringliteral">"pmullw %%mm6, %%mm0\n\t"</span>
<a name="l00784"></a>00784 <span class="stringliteral">"psrlw $8, %%mm0\n\t"</span>
<a name="l00785"></a>00785 <span class="stringliteral">"psubusw %%mm0, %%mm3\n\t"</span>
<a name="l00786"></a>00786 <span class="stringliteral">"packuswb %%mm3, %%mm3\n\t"</span>
<a name="l00787"></a>00787 <span class="stringliteral">"movd %%mm3, (%0)\n\t"</span>
<a name="l00788"></a>00788 : : <span class="stringliteral">"r"</span>(data) );
<a name="l00789"></a>00789 data++;
<a name="l00790"></a>00790 }
<a name="l00791"></a>00791 }
<a name="l00792"></a>00792 __asm__ __volatile__(<span class="stringliteral">"emms"</span>); <span class="comment">// clear mmx state</span>
<a name="l00793"></a>00793 }
<a name="l00794"></a>00794 <span class="keywordflow">else</span>
<a name="l00795"></a>00795 <span class="preprocessor">#endif // USE_MMX_INLINE_ASM</span>
<a name="l00796"></a>00796 <span class="preprocessor"></span> {
<a name="l00797"></a>00797 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *segTbl = <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[segColors];
<a name="l00798"></a>00798 <span class="keywordtype">int</span> tmp;
<a name="l00799"></a>00799 <span class="keywordflow">if</span>(brighten){ <span class="comment">// keep overflow check out of loops</span>
<a name="l00800"></a>00800 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i < segColors; ++i){
<a name="l00801"></a>00801 tmp = (int)(i*percent);
<a name="l00802"></a>00802 <span class="keywordflow">if</span>(tmp > 255)
<a name="l00803"></a>00803 tmp = 255;
<a name="l00804"></a>00804 segTbl[i] = tmp;
<a name="l00805"></a>00805 }
<a name="l00806"></a>00806 }
<a name="l00807"></a>00807 <span class="keywordflow">else</span>{
<a name="l00808"></a>00808 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i < segColors; ++i){
<a name="l00809"></a>00809 tmp = (int)(i*percent);
<a name="l00810"></a>00810 <span class="keywordflow">if</span>(tmp < 0)
<a name="l00811"></a>00811 tmp = 0;
<a name="l00812"></a>00812 segTbl[i] = tmp;
<a name="l00813"></a>00813 }
<a name="l00814"></a>00814 }
<a name="l00815"></a>00815
<a name="l00816"></a>00816 <span class="keywordflow">if</span>(brighten){ <span class="comment">// same here</span>
<a name="l00817"></a>00817 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i < pixels; ++i){
<a name="l00818"></a>00818 <span class="keywordtype">int</span> r = qRed(data[i]);
<a name="l00819"></a>00819 <span class="keywordtype">int</span> g = qGreen(data[i]);
<a name="l00820"></a>00820 <span class="keywordtype">int</span> b = qBlue(data[i]);
<a name="l00821"></a>00821 <span class="keywordtype">int</span> a = qAlpha(data[i]);
<a name="l00822"></a>00822 r = r + segTbl[r] > 255 ? 255 : r + segTbl[r];
<a name="l00823"></a>00823 g = g + segTbl[g] > 255 ? 255 : g + segTbl[g];
<a name="l00824"></a>00824 b = b + segTbl[b] > 255 ? 255 : b + segTbl[b];
<a name="l00825"></a>00825 data[i] = qRgba(r, g, b,a);
<a name="l00826"></a>00826 }
<a name="l00827"></a>00827 }
<a name="l00828"></a>00828 <span class="keywordflow">else</span>{
<a name="l00829"></a>00829 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i < pixels; ++i){
<a name="l00830"></a>00830 <span class="keywordtype">int</span> r = qRed(data[i]);
<a name="l00831"></a>00831 <span class="keywordtype">int</span> g = qGreen(data[i]);
<a name="l00832"></a>00832 <span class="keywordtype">int</span> b = qBlue(data[i]);
<a name="l00833"></a>00833 <span class="keywordtype">int</span> a = qAlpha(data[i]);
<a name="l00834"></a>00834 r = r - segTbl[r] < 0 ? 0 : r - segTbl[r];
<a name="l00835"></a>00835 g = g - segTbl[g] < 0 ? 0 : g - segTbl[g];
<a name="l00836"></a>00836 b = b - segTbl[b] < 0 ? 0 : b - segTbl[b];
<a name="l00837"></a>00837 data[i] = qRgba(r, g, b, a);
<a name="l00838"></a>00838 }
<a name="l00839"></a>00839 }
<a name="l00840"></a>00840 <span class="keyword">delete</span> [] segTbl;
<a name="l00841"></a>00841 }
<a name="l00842"></a>00842
<a name="l00843"></a>00843 <span class="keywordflow">return</span> image;
<a name="l00844"></a>00844 }
<a name="l00845"></a>00845
<a name="l00846"></a><a class="code" href="classKImageEffect.html#afed395de7f5e3265cb6f03a30e4d04ae">00846</a> <a class="codeRef" href="qimage.html">QImage</a>& <a class="code" href="classKImageEffect.html#afed395de7f5e3265cb6f03a30e4d04ae" title="Modifies the intensity of a pixmap's RGB channel component.">KImageEffect::channelIntensity</a>(<a class="codeRef" href="qimage.html">QImage</a> &image, <span class="keywordtype">float</span> percent,
<a name="l00847"></a>00847 <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8dea" title="This enum provides a RGB channel specification.">RGBComponent</a> channel)
<a name="l00848"></a>00848 {
<a name="l00849"></a>00849 <span class="keywordflow">if</span> (image.<a class="codeRef" href="qimage.html#width">width</a>() == 0 || image.<a class="codeRef" href="qimage.html#height">height</a>() == 0) {
<a name="l00850"></a>00850 <span class="preprocessor">#ifndef NDEBUG</span>
<a name="l00851"></a>00851 <span class="preprocessor"></span> std::cerr << <span class="stringliteral">"WARNING: KImageEffect::channelIntensity : invalid image\n"</span>;
<a name="l00852"></a>00852 <span class="preprocessor">#endif</span>
<a name="l00853"></a>00853 <span class="preprocessor"></span> <span class="keywordflow">return</span> image;
<a name="l00854"></a>00854 }
<a name="l00855"></a>00855
<a name="l00856"></a>00856 <span class="keywordtype">int</span> segColors = image.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8 ? 256 : image.<a class="codeRef" href="qimage.html#numColors">numColors</a>();
<a name="l00857"></a>00857 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *segTbl = <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[segColors];
<a name="l00858"></a>00858 <span class="keywordtype">int</span> pixels = image.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8 ? image.<a class="codeRef" href="qimage.html#width">width</a>()*image.<a class="codeRef" href="qimage.html#height">height</a>() :
<a name="l00859"></a>00859 image.<a class="codeRef" href="qimage.html#numColors">numColors</a>();
<a name="l00860"></a>00860 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *data = image.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8 ? (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image.<a class="codeRef" href="qimage.html#bits">bits</a>() :
<a name="l00861"></a>00861 (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l00862"></a>00862 <span class="keywordtype">bool</span> brighten = (percent >= 0);
<a name="l00863"></a>00863 <span class="keywordflow">if</span>(percent < 0)
<a name="l00864"></a>00864 percent = -percent;
<a name="l00865"></a>00865
<a name="l00866"></a>00866 <span class="keywordflow">if</span>(brighten){ <span class="comment">// keep overflow check out of loops</span>
<a name="l00867"></a>00867 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i < segColors; ++i){
<a name="l00868"></a>00868 <span class="keywordtype">int</span> tmp = (int)(i*percent);
<a name="l00869"></a>00869 <span class="keywordflow">if</span>(tmp > 255)
<a name="l00870"></a>00870 tmp = 255;
<a name="l00871"></a>00871 segTbl[i] = tmp;
<a name="l00872"></a>00872 }
<a name="l00873"></a>00873 }
<a name="l00874"></a>00874 <span class="keywordflow">else</span>{
<a name="l00875"></a>00875 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i < segColors; ++i){
<a name="l00876"></a>00876 <span class="keywordtype">int</span> tmp = (int)(i*percent);
<a name="l00877"></a>00877 <span class="keywordflow">if</span>(tmp < 0)
<a name="l00878"></a>00878 tmp = 0;
<a name="l00879"></a>00879 segTbl[i] = tmp;
<a name="l00880"></a>00880 }
<a name="l00881"></a>00881 }
<a name="l00882"></a>00882
<a name="l00883"></a>00883 <span class="keywordflow">if</span>(brighten){ <span class="comment">// same here</span>
<a name="l00884"></a>00884 <span class="keywordflow">if</span>(channel == <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8deaa8428ae9bb4f10835798177d7ae8ff2c1" title="Red channel.">Red</a>){ <span class="comment">// and here ;-)</span>
<a name="l00885"></a>00885 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i < pixels; ++i){
<a name="l00886"></a>00886 <span class="keywordtype">int</span> c = qRed(data[i]);
<a name="l00887"></a>00887 c = c + segTbl[c] > 255 ? 255 : c + segTbl[c];
<a name="l00888"></a>00888 data[i] = qRgba(c, qGreen(data[i]), qBlue(data[i]), qAlpha(data[i]));
<a name="l00889"></a>00889 }
<a name="l00890"></a>00890 }
<a name="l00891"></a>00891 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(channel == <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8deaa5d121e962178e026143bde406e3718c4" title="Green channel.">Green</a>){
<a name="l00892"></a>00892 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i < pixels; ++i){
<a name="l00893"></a>00893 <span class="keywordtype">int</span> c = qGreen(data[i]);
<a name="l00894"></a>00894 c = c + segTbl[c] > 255 ? 255 : c + segTbl[c];
<a name="l00895"></a>00895 data[i] = qRgba(qRed(data[i]), c, qBlue(data[i]), qAlpha(data[i]));
<a name="l00896"></a>00896 }
<a name="l00897"></a>00897 }
<a name="l00898"></a>00898 <span class="keywordflow">else</span>{
<a name="l00899"></a>00899 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i < pixels; ++i){
<a name="l00900"></a>00900 <span class="keywordtype">int</span> c = qBlue(data[i]);
<a name="l00901"></a>00901 c = c + segTbl[c] > 255 ? 255 : c + segTbl[c];
<a name="l00902"></a>00902 data[i] = qRgba(qRed(data[i]), qGreen(data[i]), c, qAlpha(data[i]));
<a name="l00903"></a>00903 }
<a name="l00904"></a>00904 }
<a name="l00905"></a>00905
<a name="l00906"></a>00906 }
<a name="l00907"></a>00907 <span class="keywordflow">else</span>{
<a name="l00908"></a>00908 <span class="keywordflow">if</span>(channel == <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8deaa8428ae9bb4f10835798177d7ae8ff2c1" title="Red channel.">Red</a>){
<a name="l00909"></a>00909 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i < pixels; ++i){
<a name="l00910"></a>00910 <span class="keywordtype">int</span> c = qRed(data[i]);
<a name="l00911"></a>00911 c = c - segTbl[c] < 0 ? 0 : c - segTbl[c];
<a name="l00912"></a>00912 data[i] = qRgba(c, qGreen(data[i]), qBlue(data[i]), qAlpha(data[i]));
<a name="l00913"></a>00913 }
<a name="l00914"></a>00914 }
<a name="l00915"></a>00915 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(channel == <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8deaa5d121e962178e026143bde406e3718c4" title="Green channel.">Green</a>){
<a name="l00916"></a>00916 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i < pixels; ++i){
<a name="l00917"></a>00917 <span class="keywordtype">int</span> c = qGreen(data[i]);
<a name="l00918"></a>00918 c = c - segTbl[c] < 0 ? 0 : c - segTbl[c];
<a name="l00919"></a>00919 data[i] = qRgba(qRed(data[i]), c, qBlue(data[i]), qAlpha(data[i]));
<a name="l00920"></a>00920 }
<a name="l00921"></a>00921 }
<a name="l00922"></a>00922 <span class="keywordflow">else</span>{
<a name="l00923"></a>00923 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i < pixels; ++i){
<a name="l00924"></a>00924 <span class="keywordtype">int</span> c = qBlue(data[i]);
<a name="l00925"></a>00925 c = c - segTbl[c] < 0 ? 0 : c - segTbl[c];
<a name="l00926"></a>00926 data[i] = qRgba(qRed(data[i]), qGreen(data[i]), c, qAlpha(data[i]));
<a name="l00927"></a>00927 }
<a name="l00928"></a>00928 }
<a name="l00929"></a>00929 }
<a name="l00930"></a>00930 <span class="keyword">delete</span> [] segTbl;
<a name="l00931"></a>00931
<a name="l00932"></a>00932 <span class="keywordflow">return</span> image;
<a name="l00933"></a>00933 }
<a name="l00934"></a>00934
<a name="l00935"></a>00935 <span class="comment">// Modulate an image with an RBG channel of another image</span>
<a name="l00936"></a>00936 <span class="comment">//</span>
<a name="l00937"></a><a class="code" href="classKImageEffect.html#aacd875df3ab0ef1dcd0244b55d85d988">00937</a> <a class="codeRef" href="qimage.html">QImage</a>& <a class="code" href="classKImageEffect.html#aacd875df3ab0ef1dcd0244b55d85d988" title="Modulate the image with a color channel of another image.">KImageEffect::modulate</a>(<a class="codeRef" href="qimage.html">QImage</a> &image, <a class="codeRef" href="qimage.html">QImage</a> &modImage, <span class="keywordtype">bool</span> reverse,
<a name="l00938"></a>00938 <a class="code" href="classKImageEffect.html#a57be85a9e69c9cf5903ada333ee8b150" title="This enum provides a modulation type specification.">ModulationType</a> type, <span class="keywordtype">int</span> factor, <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8dea" title="This enum provides a RGB channel specification.">RGBComponent</a> channel)
<a name="l00939"></a>00939 {
<a name="l00940"></a>00940 <span class="keywordflow">if</span> (image.<a class="codeRef" href="qimage.html#width">width</a>() == 0 || image.<a class="codeRef" href="qimage.html#height">height</a>() == 0 ||
<a name="l00941"></a>00941 modImage.<a class="codeRef" href="qimage.html#width">width</a>() == 0 || modImage.<a class="codeRef" href="qimage.html#height">height</a>() == 0) {
<a name="l00942"></a>00942 <span class="preprocessor">#ifndef NDEBUG</span>
<a name="l00943"></a>00943 <span class="preprocessor"></span> std::cerr << <span class="stringliteral">"WARNING: KImageEffect::modulate : invalid image\n"</span>;
<a name="l00944"></a>00944 <span class="preprocessor">#endif</span>
<a name="l00945"></a>00945 <span class="preprocessor"></span> <span class="keywordflow">return</span> image;
<a name="l00946"></a>00946 }
<a name="l00947"></a>00947
<a name="l00948"></a>00948 <span class="keywordtype">int</span> r, g, b, h, s, v, a;
<a name="l00949"></a>00949 <a class="codeRef" href="qcolor.html">QColor</a> clr;
<a name="l00950"></a>00950 <span class="keywordtype">int</span> mod=0;
<a name="l00951"></a>00951 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> x1, x2, y1, y2;
<a name="l00952"></a>00952 <span class="keyword">register</span> <span class="keywordtype">int</span> x, y;
<a name="l00953"></a>00953
<a name="l00954"></a>00954 <span class="comment">// for image, we handle only depth 32</span>
<a name="l00955"></a>00955 <span class="keywordflow">if</span> (image.<a class="codeRef" href="qimage.html#depth">depth</a>()<32) image = image.<a class="codeRef" href="qimage.html#convertDepth">convertDepth</a>(32);
<a name="l00956"></a>00956
<a name="l00957"></a>00957 <span class="comment">// for modImage, we handle depth 8 and 32</span>
<a name="l00958"></a>00958 <span class="keywordflow">if</span> (modImage.<a class="codeRef" href="qimage.html#depth">depth</a>()<8) modImage = modImage.<a class="codeRef" href="qimage.html#convertDepth">convertDepth</a>(8);
<a name="l00959"></a>00959
<a name="l00960"></a>00960 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *colorTable2 = (modImage.<a class="codeRef" href="qimage.html#depth">depth</a>()==8) ?
<a name="l00961"></a>00961 modImage.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>():0;
<a name="l00962"></a>00962 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *data1, *data2;
<a name="l00963"></a>00963 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *data2b;
<a name="l00964"></a>00964 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> color1, color2;
<a name="l00965"></a>00965
<a name="l00966"></a>00966 x1 = image.<a class="codeRef" href="qimage.html#width">width</a>(); y1 = image.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l00967"></a>00967 x2 = modImage.<a class="codeRef" href="qimage.html#width">width</a>(); y2 = modImage.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l00968"></a>00968
<a name="l00969"></a>00969 <span class="keywordflow">for</span> (y = 0; y < (int)y1; y++) {
<a name="l00970"></a>00970 data1 = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *) image.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l00971"></a>00971 data2 = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *) modImage.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>( y%y2 );
<a name="l00972"></a>00972 data2b = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *) modImage.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>( y%y2 );
<a name="l00973"></a>00973
<a name="l00974"></a>00974 x=0;
<a name="l00975"></a>00975 <span class="keywordflow">while</span>(x < (<span class="keywordtype">int</span>)x1) {
<a name="l00976"></a>00976 color2 = (colorTable2) ? colorTable2[*data2b] : *data2;
<a name="l00977"></a>00977 <span class="keywordflow">if</span> (reverse) {
<a name="l00978"></a>00978 color1 = color2;
<a name="l00979"></a>00979 color2 = *data1;
<a name="l00980"></a>00980 }
<a name="l00981"></a>00981 <span class="keywordflow">else</span>
<a name="l00982"></a>00982 color1 = *data1;
<a name="l00983"></a>00983
<a name="l00984"></a>00984 <span class="keywordflow">if</span> (type == <a class="code" href="classKImageEffect.html#a57be85a9e69c9cf5903ada333ee8b150afba8a796072ae78d21874ee76358bf2b" title="Modulate image intensity.">Intensity</a> || type == <a class="code" href="classKImageEffect.html#a57be85a9e69c9cf5903ada333ee8b150a44307c8f7b2f039bbbf7eb5a8c5460d7" title="Modulate image contrast.">Contrast</a>) {
<a name="l00985"></a>00985 r = qRed(color1);
<a name="l00986"></a>00986 g = qGreen(color1);
<a name="l00987"></a>00987 b = qBlue(color1);
<a name="l00988"></a>00988 <span class="keywordflow">if</span> (channel != <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8deaa3116c89c1cef765f12cb6ea79c99eb7f" title="All channels.">All</a>) {
<a name="l00989"></a>00989 mod = (channel == <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8deaa8428ae9bb4f10835798177d7ae8ff2c1" title="Red channel.">Red</a>) ? qRed(color2) :
<a name="l00990"></a>00990 (channel == <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8deaa5d121e962178e026143bde406e3718c4" title="Green channel.">Green</a>) ? qGreen(color2) :
<a name="l00991"></a>00991 (channel == <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8deaa897b41db8f45ae9e097e15d72c599444" title="Blue channel.">Blue</a>) ? qBlue(color2) :
<a name="l00992"></a>00992 (channel == <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8deaa24f5a040f37789b1c63922b00eff1f8f" title="Grey channel.">Gray</a>) ? qGray(color2) : 0;
<a name="l00993"></a>00993 mod = mod*factor/50;
<a name="l00994"></a>00994 }
<a name="l00995"></a>00995
<a name="l00996"></a>00996 <span class="keywordflow">if</span> (type == <a class="code" href="classKImageEffect.html#a57be85a9e69c9cf5903ada333ee8b150afba8a796072ae78d21874ee76358bf2b" title="Modulate image intensity.">Intensity</a>) {
<a name="l00997"></a>00997 <span class="keywordflow">if</span> (channel == <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8deaa3116c89c1cef765f12cb6ea79c99eb7f" title="All channels.">All</a>) {
<a name="l00998"></a>00998 r += r * factor/50 * qRed(color2)/256;
<a name="l00999"></a>00999 g += g * factor/50 * qGreen(color2)/256;
<a name="l01000"></a>01000 b += b * factor/50 * qBlue(color2)/256;
<a name="l01001"></a>01001 }
<a name="l01002"></a>01002 <span class="keywordflow">else</span> {
<a name="l01003"></a>01003 r += r * mod/256;
<a name="l01004"></a>01004 g += g * mod/256;
<a name="l01005"></a>01005 b += b * mod/256;
<a name="l01006"></a>01006 }
<a name="l01007"></a>01007 }
<a name="l01008"></a>01008 <span class="keywordflow">else</span> { <span class="comment">// Contrast</span>
<a name="l01009"></a>01009 <span class="keywordflow">if</span> (channel == <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8deaa3116c89c1cef765f12cb6ea79c99eb7f" title="All channels.">All</a>) {
<a name="l01010"></a>01010 r += (r-128) * factor/50 * qRed(color2)/128;
<a name="l01011"></a>01011 g += (g-128) * factor/50 * qGreen(color2)/128;
<a name="l01012"></a>01012 b += (b-128) * factor/50 * qBlue(color2)/128;
<a name="l01013"></a>01013 }
<a name="l01014"></a>01014 <span class="keywordflow">else</span> {
<a name="l01015"></a>01015 r += (r-128) * mod/128;
<a name="l01016"></a>01016 g += (g-128) * mod/128;
<a name="l01017"></a>01017 b += (b-128) * mod/128;
<a name="l01018"></a>01018 }
<a name="l01019"></a>01019 }
<a name="l01020"></a>01020
<a name="l01021"></a>01021 <span class="keywordflow">if</span> (r<0) r=0; <span class="keywordflow">if</span> (r>255) r=255;
<a name="l01022"></a>01022 <span class="keywordflow">if</span> (g<0) g=0; <span class="keywordflow">if</span> (g>255) g=255;
<a name="l01023"></a>01023 <span class="keywordflow">if</span> (b<0) b=0; <span class="keywordflow">if</span> (b>255) b=255;
<a name="l01024"></a>01024 a = qAlpha(*data1);
<a name="l01025"></a>01025 *data1 = qRgba(r, g, b, a);
<a name="l01026"></a>01026 }
<a name="l01027"></a>01027 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (type == <a class="code" href="classKImageEffect.html#a57be85a9e69c9cf5903ada333ee8b150a1ef10e1e00c425ae8b95d9982d888185" title="Modulate image saturation.">Saturation</a> || type == <a class="code" href="classKImageEffect.html#a57be85a9e69c9cf5903ada333ee8b150a5f06d4888bfccebbd63160269271995c" title="Modulate image hue.">HueShift</a>) {
<a name="l01028"></a>01028 clr.<a class="codeRef" href="qcolor.html#setRgb">setRgb</a>(color1);
<a name="l01029"></a>01029 clr.<a class="codeRef" href="qcolor.html#hsv">hsv</a>(&h, &s, &v);
<a name="l01030"></a>01030 mod = (channel == <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8deaa8428ae9bb4f10835798177d7ae8ff2c1" title="Red channel.">Red</a>) ? qRed(color2) :
<a name="l01031"></a>01031 (channel == <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8deaa5d121e962178e026143bde406e3718c4" title="Green channel.">Green</a>) ? qGreen(color2) :
<a name="l01032"></a>01032 (channel == <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8deaa897b41db8f45ae9e097e15d72c599444" title="Blue channel.">Blue</a>) ? qBlue(color2) :
<a name="l01033"></a>01033 (channel == <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8deaa24f5a040f37789b1c63922b00eff1f8f" title="Grey channel.">Gray</a>) ? qGray(color2) : 0;
<a name="l01034"></a>01034 mod = mod*factor/50;
<a name="l01035"></a>01035
<a name="l01036"></a>01036 <span class="keywordflow">if</span> (type == <a class="code" href="classKImageEffect.html#a57be85a9e69c9cf5903ada333ee8b150a1ef10e1e00c425ae8b95d9982d888185" title="Modulate image saturation.">Saturation</a>) {
<a name="l01037"></a>01037 s -= s * mod/256;
<a name="l01038"></a>01038 <span class="keywordflow">if</span> (s<0) s=0; <span class="keywordflow">if</span> (s>255) s=255;
<a name="l01039"></a>01039 }
<a name="l01040"></a>01040 <span class="keywordflow">else</span> { <span class="comment">// HueShift</span>
<a name="l01041"></a>01041 h += mod;
<a name="l01042"></a>01042 <span class="keywordflow">while</span>(h<0) h+=360;
<a name="l01043"></a>01043 h %= 360;
<a name="l01044"></a>01044 }
<a name="l01045"></a>01045
<a name="l01046"></a>01046 clr.<a class="codeRef" href="qcolor.html#setHsv">setHsv</a>(h, s, v);
<a name="l01047"></a>01047 a = qAlpha(*data1);
<a name="l01048"></a>01048 *data1 = clr.<a class="codeRef" href="qcolor.html#rgb">rgb</a>() | ((uint)(a & 0xff) << 24);
<a name="l01049"></a>01049 }
<a name="l01050"></a>01050 data1++; data2++; data2b++; x++;
<a name="l01051"></a>01051 <span class="keywordflow">if</span> ( (x%x2) ==0) { data2 -= x2; data2b -= x2; }
<a name="l01052"></a>01052 }
<a name="l01053"></a>01053 }
<a name="l01054"></a>01054 <span class="keywordflow">return</span> image;
<a name="l01055"></a>01055 }
<a name="l01056"></a>01056
<a name="l01057"></a>01057
<a name="l01058"></a>01058
<a name="l01059"></a>01059 <span class="comment">//======================================================================</span>
<a name="l01060"></a>01060 <span class="comment">//</span>
<a name="l01061"></a>01061 <span class="comment">// Blend effects</span>
<a name="l01062"></a>01062 <span class="comment">//</span>
<a name="l01063"></a>01063 <span class="comment">//======================================================================</span>
<a name="l01064"></a>01064
<a name="l01065"></a>01065
<a name="l01066"></a>01066 <span class="comment">// Nice and fast direct pixel manipulation</span>
<a name="l01067"></a><a class="code" href="classKImageEffect.html#aeb41c4a7748892c4a58537876d2b4a43">01067</a> <a class="codeRef" href="qimage.html">QImage</a>& <a class="code" href="classKImageEffect.html#aeb41c4a7748892c4a58537876d2b4a43" title="Blends a color into the destination image, using an opacity value for blending one into another...">KImageEffect::blend</a>(<span class="keyword">const</span> <a class="codeRef" href="qcolor.html">QColor</a>& clr, <a class="codeRef" href="qimage.html">QImage</a>& dst, <span class="keywordtype">float</span> opacity)
<a name="l01068"></a>01068 {
<a name="l01069"></a>01069 <span class="keywordflow">if</span> (dst.<a class="codeRef" href="qimage.html#width">width</a>() <= 0 || dst.<a class="codeRef" href="qimage.html#height">height</a>() <= 0)
<a name="l01070"></a>01070 <span class="keywordflow">return</span> dst;
<a name="l01071"></a>01071
<a name="l01072"></a>01072 <span class="keywordflow">if</span> (opacity < 0.0 || opacity > 1.0) {
<a name="l01073"></a>01073 <span class="preprocessor">#ifndef NDEBUG</span>
<a name="l01074"></a>01074 <span class="preprocessor"></span> std::cerr << <span class="stringliteral">"WARNING: KImageEffect::blend : invalid opacity. Range [0, 1]\n"</span>;
<a name="l01075"></a>01075 <span class="preprocessor">#endif</span>
<a name="l01076"></a>01076 <span class="preprocessor"></span> <span class="keywordflow">return</span> dst;
<a name="l01077"></a>01077 }
<a name="l01078"></a>01078
<a name="l01079"></a>01079 <span class="keywordflow">if</span> (dst.<a class="codeRef" href="qimage.html#depth">depth</a>() != 32)
<a name="l01080"></a>01080 dst = dst.<a class="codeRef" href="qimage.html#convertDepth">convertDepth</a>(32);
<a name="l01081"></a>01081
<a name="l01082"></a>01082 <span class="keywordtype">int</span> pixels = dst.<a class="codeRef" href="qimage.html#width">width</a>() * dst.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l01083"></a>01083
<a name="l01084"></a>01084 <span class="preprocessor">#ifdef USE_SSE2_INLINE_ASM</span>
<a name="l01085"></a>01085 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( <a class="code" href="classKCPUInfo.html#a4c4dde7c9f4549591681b706fd26f396" title="Returns true if the processor supports extension, and false otherwise.">KCPUInfo::haveExtension</a>( <a class="code" href="classKCPUInfo.html#adaead16555bac8cd592d9ea885138400a585e8672783aae9aff407f3ab8b7bb45" title="Intel's SSE2 instructions.">KCPUInfo::IntelSSE2</a> ) && pixels > 16 ) {
<a name="l01086"></a>01086 Q_UINT16 alpha = Q_UINT16( ( 1.0 - opacity ) * 256.0 );
<a name="l01087"></a>01087
<a name="l01088"></a>01088 KIE8Pack packedalpha = { { alpha, alpha, alpha, 256,
<a name="l01089"></a>01089 alpha, alpha, alpha, 256 } };
<a name="l01090"></a>01090
<a name="l01091"></a>01091 Q_UINT16 red = Q_UINT16( clr.<a class="codeRef" href="qcolor.html#red">red</a>() * 256 * opacity );
<a name="l01092"></a>01092 Q_UINT16 green = Q_UINT16( clr.<a class="codeRef" href="qcolor.html#green">green</a>() * 256 * opacity );
<a name="l01093"></a>01093 Q_UINT16 blue = Q_UINT16( clr.<a class="codeRef" href="qcolor.html#blue">blue</a>() * 256 * opacity );
<a name="l01094"></a>01094
<a name="l01095"></a>01095 KIE8Pack packedcolor = { { blue, green, red, 0,
<a name="l01096"></a>01096 blue, green, red, 0 } };
<a name="l01097"></a>01097
<a name="l01098"></a>01098 <span class="comment">// Prepare the XMM5, XMM6 and XMM7 registers for unpacking and blending</span>
<a name="l01099"></a>01099 __asm__ __volatile__(
<a name="l01100"></a>01100 <span class="stringliteral">"pxor %%xmm7, %%xmm7\n\t"</span> <span class="comment">// Zero out XMM7 for unpacking</span>
<a name="l01101"></a>01101 <span class="stringliteral">"movdqu (%0), %%xmm6\n\t"</span> <span class="comment">// Set up (1 - alpha) * 256 in XMM6</span>
<a name="l01102"></a>01102 <span class="stringliteral">"movdqu (%1), %%xmm5\n\t"</span> <span class="comment">// Set up color * alpha * 256 in XMM5</span>
<a name="l01103"></a>01103 : : <span class="stringliteral">"r"</span>(&packedalpha), <span class="stringliteral">"r"</span>(&packedcolor),
<a name="l01104"></a>01104 <span class="stringliteral">"m"</span>(packedcolor), <span class="stringliteral">"m"</span>(packedalpha) );
<a name="l01105"></a>01105
<a name="l01106"></a>01106 Q_UINT32 *data = <span class="keyword">reinterpret_cast<</span>Q_UINT32*<span class="keyword">></span>( dst.<a class="codeRef" href="qimage.html#bits">bits</a>() );
<a name="l01107"></a>01107
<a name="l01108"></a>01108 <span class="comment">// Check how many pixels we need to process to achieve 16 byte alignment</span>
<a name="l01109"></a>01109 <span class="keywordtype">int</span> offset = (16 - (Q_UINT32( data ) & 0x0f)) / 4;
<a name="l01110"></a>01110
<a name="l01111"></a>01111 <span class="comment">// The main loop processes 8 pixels / iteration</span>
<a name="l01112"></a>01112 <span class="keywordtype">int</span> remainder = (pixels - offset) % 8;
<a name="l01113"></a>01113 pixels -= remainder;
<a name="l01114"></a>01114
<a name="l01115"></a>01115 <span class="comment">// Alignment loop</span>
<a name="l01116"></a>01116 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = 0; i < offset; i++ ) {
<a name="l01117"></a>01117 __asm__ __volatile__(
<a name="l01118"></a>01118 <span class="stringliteral">"movd (%0,%1,4), %%xmm0\n\t"</span> <span class="comment">// Load one pixel to XMM1</span>
<a name="l01119"></a>01119 <span class="stringliteral">"punpcklbw %%xmm7, %%xmm0\n\t"</span> <span class="comment">// Unpack the pixel</span>
<a name="l01120"></a>01120 <span class="stringliteral">"pmullw %%xmm6, %%xmm0\n\t"</span> <span class="comment">// Multiply the pixel with (1 - alpha) * 256</span>
<a name="l01121"></a>01121 <span class="stringliteral">"paddw %%xmm5, %%xmm0\n\t"</span> <span class="comment">// Add color * alpha * 256 to the result</span>
<a name="l01122"></a>01122 <span class="stringliteral">"psrlw $8, %%xmm0\n\t"</span> <span class="comment">// Divide by 256</span>
<a name="l01123"></a>01123 <span class="stringliteral">"packuswb %%xmm1, %%xmm0\n\t"</span> <span class="comment">// Pack the pixel to a dword</span>
<a name="l01124"></a>01124 <span class="stringliteral">"movd %%xmm0, (%0,%1,4)\n\t"</span> <span class="comment">// Write the pixel to the image</span>
<a name="l01125"></a>01125 : : <span class="stringliteral">"r"</span>(data), <span class="stringliteral">"r"</span>(i) );
<a name="l01126"></a>01126 }
<a name="l01127"></a>01127
<a name="l01128"></a>01128 <span class="comment">// Main loop</span>
<a name="l01129"></a>01129 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = offset; i < pixels; i += 8 ) {
<a name="l01130"></a>01130 __asm__ __volatile(
<a name="l01131"></a>01131 <span class="comment">// Load 8 pixels to XMM registers 1 - 4</span>
<a name="l01132"></a>01132 <span class="stringliteral">"movq (%0,%1,4), %%xmm0\n\t"</span> <span class="comment">// Load pixels 1 and 2 to XMM1</span>
<a name="l01133"></a>01133 <span class="stringliteral">"movq 8(%0,%1,4), %%xmm1\n\t"</span> <span class="comment">// Load pixels 3 and 4 to XMM2</span>
<a name="l01134"></a>01134 <span class="stringliteral">"movq 16(%0,%1,4), %%xmm2\n\t"</span> <span class="comment">// Load pixels 5 and 6 to XMM3</span>
<a name="l01135"></a>01135 <span class="stringliteral">"movq 24(%0,%1,4), %%xmm3\n\t"</span> <span class="comment">// Load pixels 7 and 8 to XMM4</span>
<a name="l01136"></a>01136
<a name="l01137"></a>01137 <span class="comment">// Prefetch the pixels for next iteration</span>
<a name="l01138"></a>01138 <span class="stringliteral">"prefetchnta 32(%0,%1,4) \n\t"</span>
<a name="l01139"></a>01139
<a name="l01140"></a>01140 <span class="comment">// Blend pixels 1 and 2</span>
<a name="l01141"></a>01141 <span class="stringliteral">"punpcklbw %%xmm7, %%xmm0\n\t"</span> <span class="comment">// Unpack the pixels</span>
<a name="l01142"></a>01142 <span class="stringliteral">"pmullw %%xmm6, %%xmm0\n\t"</span> <span class="comment">// Multiply the pixels with (1 - alpha) * 256</span>
<a name="l01143"></a>01143 <span class="stringliteral">"paddw %%xmm5, %%xmm0\n\t"</span> <span class="comment">// Add color * alpha * 256 to the result</span>
<a name="l01144"></a>01144 <span class="stringliteral">"psrlw $8, %%xmm0\n\t"</span> <span class="comment">// Divide by 256</span>
<a name="l01145"></a>01145
<a name="l01146"></a>01146 <span class="comment">// Blend pixels 3 and 4</span>
<a name="l01147"></a>01147 <span class="stringliteral">"punpcklbw %%xmm7, %%xmm1\n\t"</span> <span class="comment">// Unpack the pixels</span>
<a name="l01148"></a>01148 <span class="stringliteral">"pmullw %%xmm6, %%xmm1\n\t"</span> <span class="comment">// Multiply the pixels with (1 - alpha) * 256</span>
<a name="l01149"></a>01149 <span class="stringliteral">"paddw %%xmm5, %%xmm1\n\t"</span> <span class="comment">// Add color * alpha * 256 to the result</span>
<a name="l01150"></a>01150 <span class="stringliteral">"psrlw $8, %%xmm1\n\t"</span> <span class="comment">// Divide by 256</span>
<a name="l01151"></a>01151
<a name="l01152"></a>01152 <span class="comment">// Blend pixels 5 and 6</span>
<a name="l01153"></a>01153 <span class="stringliteral">"punpcklbw %%xmm7, %%xmm2\n\t"</span> <span class="comment">// Unpack the pixels</span>
<a name="l01154"></a>01154 <span class="stringliteral">"pmullw %%xmm6, %%xmm2\n\t"</span> <span class="comment">// Multiply the pixels with (1 - alpha) * 256</span>
<a name="l01155"></a>01155 <span class="stringliteral">"paddw %%xmm5, %%xmm2\n\t"</span> <span class="comment">// Add color * alpha * 256 to the result</span>
<a name="l01156"></a>01156 <span class="stringliteral">"psrlw $8, %%xmm2\n\t"</span> <span class="comment">// Divide by 256</span>
<a name="l01157"></a>01157
<a name="l01158"></a>01158 <span class="comment">// Blend pixels 7 and 8</span>
<a name="l01159"></a>01159 <span class="stringliteral">"punpcklbw %%xmm7, %%xmm3\n\t"</span> <span class="comment">// Unpack the pixels</span>
<a name="l01160"></a>01160 <span class="stringliteral">"pmullw %%xmm6, %%xmm3\n\t"</span> <span class="comment">// Multiply the pixels with (1 - alpha) * 256</span>
<a name="l01161"></a>01161 <span class="stringliteral">"paddw %%xmm5, %%xmm3\n\t"</span> <span class="comment">// Add color * alpha * 256 to the result</span>
<a name="l01162"></a>01162 <span class="stringliteral">"psrlw $8, %%xmm3\n\t"</span> <span class="comment">// Divide by 256</span>
<a name="l01163"></a>01163
<a name="l01164"></a>01164 <span class="comment">// Pack the pixels into 2 double quadwords</span>
<a name="l01165"></a>01165 <span class="stringliteral">"packuswb %%xmm1, %%xmm0\n\t"</span> <span class="comment">// Pack pixels 1 - 4 to a double qword</span>
<a name="l01166"></a>01166 <span class="stringliteral">"packuswb %%xmm3, %%xmm2\n\t"</span> <span class="comment">// Pack pixles 5 - 8 to a double qword</span>
<a name="l01167"></a>01167
<a name="l01168"></a>01168 <span class="comment">// Write the pixels back to the image</span>
<a name="l01169"></a>01169 <span class="stringliteral">"movdqa %%xmm0, (%0,%1,4)\n\t"</span> <span class="comment">// Store pixels 1 - 4</span>
<a name="l01170"></a>01170 <span class="stringliteral">"movdqa %%xmm2, 16(%0,%1,4)\n\t"</span> <span class="comment">// Store pixels 5 - 8</span>
<a name="l01171"></a>01171 : : <span class="stringliteral">"r"</span>(data), <span class="stringliteral">"r"</span>(i) );
<a name="l01172"></a>01172 }
<a name="l01173"></a>01173
<a name="l01174"></a>01174 <span class="comment">// Cleanup loop</span>
<a name="l01175"></a>01175 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = pixels; i < pixels + remainder; i++ ) {
<a name="l01176"></a>01176 __asm__ __volatile__(
<a name="l01177"></a>01177 <span class="stringliteral">"movd (%0,%1,4), %%xmm0\n\t"</span> <span class="comment">// Load one pixel to XMM1</span>
<a name="l01178"></a>01178 <span class="stringliteral">"punpcklbw %%xmm7, %%xmm0\n\t"</span> <span class="comment">// Unpack the pixel</span>
<a name="l01179"></a>01179 <span class="stringliteral">"pmullw %%xmm6, %%xmm0\n\t"</span> <span class="comment">// Multiply the pixel with (1 - alpha) * 256</span>
<a name="l01180"></a>01180 <span class="stringliteral">"paddw %%xmm5, %%xmm0\n\t"</span> <span class="comment">// Add color * alpha * 256 to the result</span>
<a name="l01181"></a>01181 <span class="stringliteral">"psrlw $8, %%xmm0\n\t"</span> <span class="comment">// Divide by 256</span>
<a name="l01182"></a>01182 <span class="stringliteral">"packuswb %%xmm1, %%xmm0\n\t"</span> <span class="comment">// Pack the pixel to a dword</span>
<a name="l01183"></a>01183 <span class="stringliteral">"movd %%xmm0, (%0,%1,4)\n\t"</span> <span class="comment">// Write the pixel to the image</span>
<a name="l01184"></a>01184 : : <span class="stringliteral">"r"</span>(data), <span class="stringliteral">"r"</span>(i) );
<a name="l01185"></a>01185 }
<a name="l01186"></a>01186 } <span class="keywordflow">else</span>
<a name="l01187"></a>01187 <span class="preprocessor">#endif</span>
<a name="l01188"></a>01188 <span class="preprocessor"></span>
<a name="l01189"></a>01189 <span class="preprocessor">#ifdef USE_MMX_INLINE_ASM</span>
<a name="l01190"></a>01190 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( <a class="code" href="classKCPUInfo.html#a4c4dde7c9f4549591681b706fd26f396" title="Returns true if the processor supports extension, and false otherwise.">KCPUInfo::haveExtension</a>( <a class="code" href="classKCPUInfo.html#adaead16555bac8cd592d9ea885138400af247dfcf2e89d3acd449020636ab3902" title="Intel's MMX instructions.">KCPUInfo::IntelMMX</a> ) && pixels > 1 ) {
<a name="l01191"></a>01191 Q_UINT16 alpha = Q_UINT16( ( 1.0 - opacity ) * 256.0 );
<a name="l01192"></a>01192 KIE4Pack packedalpha = { { alpha, alpha, alpha, 256 } };
<a name="l01193"></a>01193
<a name="l01194"></a>01194 Q_UINT16 red = Q_UINT16( clr.<a class="codeRef" href="qcolor.html#red">red</a>() * 256 * opacity );
<a name="l01195"></a>01195 Q_UINT16 green = Q_UINT16( clr.<a class="codeRef" href="qcolor.html#green">green</a>() * 256 * opacity );
<a name="l01196"></a>01196 Q_UINT16 blue = Q_UINT16( clr.<a class="codeRef" href="qcolor.html#blue">blue</a>() * 256 * opacity );
<a name="l01197"></a>01197
<a name="l01198"></a>01198 KIE4Pack packedcolor = { { blue, green, red, 0 } };
<a name="l01199"></a>01199
<a name="l01200"></a>01200 __asm__ __volatile__(
<a name="l01201"></a>01201 <span class="stringliteral">"pxor %%mm7, %%mm7\n\t"</span> <span class="comment">// Zero out MM7 for unpacking</span>
<a name="l01202"></a>01202 <span class="stringliteral">"movq (%0), %%mm6\n\t"</span> <span class="comment">// Set up (1 - alpha) * 256 in MM6</span>
<a name="l01203"></a>01203 <span class="stringliteral">"movq (%1), %%mm5\n\t"</span> <span class="comment">// Set up color * alpha * 256 in MM5</span>
<a name="l01204"></a>01204 : : <span class="stringliteral">"r"</span>(&packedalpha), <span class="stringliteral">"r"</span>(&packedcolor), <span class="stringliteral">"m"</span>(packedcolor), <span class="stringliteral">"m"</span>(packedalpha) );
<a name="l01205"></a>01205
<a name="l01206"></a>01206 Q_UINT32 *data = <span class="keyword">reinterpret_cast<</span>Q_UINT32*<span class="keyword">></span>( dst.<a class="codeRef" href="qimage.html#bits">bits</a>() );
<a name="l01207"></a>01207
<a name="l01208"></a>01208 <span class="comment">// The main loop processes 4 pixels / iteration</span>
<a name="l01209"></a>01209 <span class="keywordtype">int</span> remainder = pixels % 4;
<a name="l01210"></a>01210 pixels -= remainder;
<a name="l01211"></a>01211
<a name="l01212"></a>01212 <span class="comment">// Main loop</span>
<a name="l01213"></a>01213 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = 0; i < pixels; i += 4 ) {
<a name="l01214"></a>01214 __asm__ __volatile__(
<a name="l01215"></a>01215 <span class="comment">// Load 4 pixels to MM registers 1 - 4</span>
<a name="l01216"></a>01216 <span class="stringliteral">"movd (%0,%1,4), %%mm0\n\t"</span> <span class="comment">// Load the 1st pixel to MM0</span>
<a name="l01217"></a>01217 <span class="stringliteral">"movd 4(%0,%1,4), %%mm1\n\t"</span> <span class="comment">// Load the 2nd pixel to MM1</span>
<a name="l01218"></a>01218 <span class="stringliteral">"movd 8(%0,%1,4), %%mm2\n\t"</span> <span class="comment">// Load the 3rd pixel to MM2</span>
<a name="l01219"></a>01219 <span class="stringliteral">"movd 12(%0,%1,4), %%mm3\n\t"</span> <span class="comment">// Load the 4th pixel to MM3</span>
<a name="l01220"></a>01220
<a name="l01221"></a>01221 <span class="comment">// Blend the first pixel</span>
<a name="l01222"></a>01222 <span class="stringliteral">"punpcklbw %%mm7, %%mm0\n\t"</span> <span class="comment">// Unpack the pixel</span>
<a name="l01223"></a>01223 <span class="stringliteral">"pmullw %%mm6, %%mm0\n\t"</span> <span class="comment">// Multiply the pixel with (1 - alpha) * 256</span>
<a name="l01224"></a>01224 <span class="stringliteral">"paddw %%mm5, %%mm0\n\t"</span> <span class="comment">// Add color * alpha * 256 to the result</span>
<a name="l01225"></a>01225 <span class="stringliteral">"psrlw $8, %%mm0\n\t"</span> <span class="comment">// Divide by 256</span>
<a name="l01226"></a>01226
<a name="l01227"></a>01227 <span class="comment">// Blend the second pixel</span>
<a name="l01228"></a>01228 <span class="stringliteral">"punpcklbw %%mm7, %%mm1\n\t"</span> <span class="comment">// Unpack the pixel</span>
<a name="l01229"></a>01229 <span class="stringliteral">"pmullw %%mm6, %%mm1\n\t"</span> <span class="comment">// Multiply the pixel with (1 - alpha) * 256</span>
<a name="l01230"></a>01230 <span class="stringliteral">"paddw %%mm5, %%mm1\n\t"</span> <span class="comment">// Add color * alpha * 256 to the result</span>
<a name="l01231"></a>01231 <span class="stringliteral">"psrlw $8, %%mm1\n\t"</span> <span class="comment">// Divide by 256</span>
<a name="l01232"></a>01232
<a name="l01233"></a>01233 <span class="comment">// Blend the third pixel</span>
<a name="l01234"></a>01234 <span class="stringliteral">"punpcklbw %%mm7, %%mm2\n\t"</span> <span class="comment">// Unpack the pixel</span>
<a name="l01235"></a>01235 <span class="stringliteral">"pmullw %%mm6, %%mm2\n\t"</span> <span class="comment">// Multiply the pixel with (1 - alpha) * 256</span>
<a name="l01236"></a>01236 <span class="stringliteral">"paddw %%mm5, %%mm2\n\t"</span> <span class="comment">// Add color * alpha * 256 to the result</span>
<a name="l01237"></a>01237 <span class="stringliteral">"psrlw $8, %%mm2\n\t"</span> <span class="comment">// Divide by 256</span>
<a name="l01238"></a>01238
<a name="l01239"></a>01239 <span class="comment">// Blend the fourth pixel</span>
<a name="l01240"></a>01240 <span class="stringliteral">"punpcklbw %%mm7, %%mm3\n\t"</span> <span class="comment">// Unpack the pixel</span>
<a name="l01241"></a>01241 <span class="stringliteral">"pmullw %%mm6, %%mm3\n\t"</span> <span class="comment">// Multiply the pixel with (1 - alpha) * 256</span>
<a name="l01242"></a>01242 <span class="stringliteral">"paddw %%mm5, %%mm3\n\t"</span> <span class="comment">// Add color * alpha * 256 to the result</span>
<a name="l01243"></a>01243 <span class="stringliteral">"psrlw $8, %%mm3\n\t"</span> <span class="comment">// Divide by 256</span>
<a name="l01244"></a>01244
<a name="l01245"></a>01245 <span class="comment">// Pack the pixels into 2 quadwords</span>
<a name="l01246"></a>01246 <span class="stringliteral">"packuswb %%mm1, %%mm0\n\t"</span> <span class="comment">// Pack pixels 1 and 2 to a qword</span>
<a name="l01247"></a>01247 <span class="stringliteral">"packuswb %%mm3, %%mm2\n\t"</span> <span class="comment">// Pack pixels 3 and 4 to a qword</span>
<a name="l01248"></a>01248
<a name="l01249"></a>01249 <span class="comment">// Write the pixels back to the image</span>
<a name="l01250"></a>01250 <span class="stringliteral">"movq %%mm0, (%0,%1,4)\n\t"</span> <span class="comment">// Store pixels 1 and 2</span>
<a name="l01251"></a>01251 <span class="stringliteral">"movq %%mm2, 8(%0,%1,4)\n\t"</span> <span class="comment">// Store pixels 3 and 4</span>
<a name="l01252"></a>01252 : : <span class="stringliteral">"r"</span>(data), <span class="stringliteral">"r"</span>(i) );
<a name="l01253"></a>01253 }
<a name="l01254"></a>01254
<a name="l01255"></a>01255 <span class="comment">// Cleanup loop</span>
<a name="l01256"></a>01256 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = pixels; i < pixels + remainder; i++ ) {
<a name="l01257"></a>01257 __asm__ __volatile__(
<a name="l01258"></a>01258 <span class="stringliteral">"movd (%0,%1,4), %%mm0\n\t"</span> <span class="comment">// Load one pixel to MM1</span>
<a name="l01259"></a>01259 <span class="stringliteral">"punpcklbw %%mm7, %%mm0\n\t"</span> <span class="comment">// Unpack the pixel</span>
<a name="l01260"></a>01260 <span class="stringliteral">"pmullw %%mm6, %%mm0\n\t"</span> <span class="comment">// Multiply the pixel with 1 - alpha * 256</span>
<a name="l01261"></a>01261 <span class="stringliteral">"paddw %%mm5, %%mm0\n\t"</span> <span class="comment">// Add color * alpha * 256 to the result</span>
<a name="l01262"></a>01262 <span class="stringliteral">"psrlw $8, %%mm0\n\t"</span> <span class="comment">// Divide by 256</span>
<a name="l01263"></a>01263 <span class="stringliteral">"packuswb %%mm0, %%mm0\n\t"</span> <span class="comment">// Pack the pixel to a dword</span>
<a name="l01264"></a>01264 <span class="stringliteral">"movd %%mm0, (%0,%1,4)\n\t"</span> <span class="comment">// Write the pixel to the image</span>
<a name="l01265"></a>01265 : : <span class="stringliteral">"r"</span>(data), <span class="stringliteral">"r"</span>(i) );
<a name="l01266"></a>01266 }
<a name="l01267"></a>01267
<a name="l01268"></a>01268 <span class="comment">// Empty the MMX state</span>
<a name="l01269"></a>01269 __asm__ __volatile__(<span class="stringliteral">"emms"</span>);
<a name="l01270"></a>01270 } <span class="keywordflow">else</span>
<a name="l01271"></a>01271 <span class="preprocessor">#endif // USE_MMX_INLINE_ASM</span>
<a name="l01272"></a>01272 <span class="preprocessor"></span>
<a name="l01273"></a>01273 {
<a name="l01274"></a>01274 <span class="keywordtype">int</span> rcol, gcol, bcol;
<a name="l01275"></a>01275 clr.<a class="codeRef" href="qcolor.html#rgb">rgb</a>(&rcol, &gcol, &bcol);
<a name="l01276"></a>01276
<a name="l01277"></a>01277 <span class="preprocessor">#ifdef WORDS_BIGENDIAN // ARGB (skip alpha)</span>
<a name="l01278"></a>01278 <span class="preprocessor"></span> <span class="keyword">register</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *data = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)dst.<a class="codeRef" href="qimage.html#bits">bits</a>() + 1;
<a name="l01279"></a>01279 <span class="preprocessor">#else // BGRA</span>
<a name="l01280"></a>01280 <span class="preprocessor"></span> <span class="keyword">register</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *data = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)dst.<a class="codeRef" href="qimage.html#bits">bits</a>();
<a name="l01281"></a>01281 <span class="preprocessor">#endif</span>
<a name="l01282"></a>01282 <span class="preprocessor"></span>
<a name="l01283"></a>01283 <span class="keywordflow">for</span> (<span class="keyword">register</span> <span class="keywordtype">int</span> i=0; i<pixels; i++)
<a name="l01284"></a>01284 {
<a name="l01285"></a>01285 <span class="preprocessor">#ifdef WORDS_BIGENDIAN</span>
<a name="l01286"></a>01286 <span class="preprocessor"></span> *data += (<span class="keywordtype">unsigned</span> char)((rcol - *data) * opacity);
<a name="l01287"></a>01287 data++;
<a name="l01288"></a>01288 *data += (<span class="keywordtype">unsigned</span> char)((gcol - *data) * opacity);
<a name="l01289"></a>01289 data++;
<a name="l01290"></a>01290 *data += (<span class="keywordtype">unsigned</span> char)((bcol - *data) * opacity);
<a name="l01291"></a>01291 data++;
<a name="l01292"></a>01292 <span class="preprocessor">#else</span>
<a name="l01293"></a>01293 <span class="preprocessor"></span> *data += (<span class="keywordtype">unsigned</span> char)((bcol - *data) * opacity);
<a name="l01294"></a>01294 data++;
<a name="l01295"></a>01295 *data += (<span class="keywordtype">unsigned</span> char)((gcol - *data) * opacity);
<a name="l01296"></a>01296 data++;
<a name="l01297"></a>01297 *data += (<span class="keywordtype">unsigned</span> char)((rcol - *data) * opacity);
<a name="l01298"></a>01298 data++;
<a name="l01299"></a>01299 <span class="preprocessor">#endif</span>
<a name="l01300"></a>01300 <span class="preprocessor"></span> data++; <span class="comment">// skip alpha</span>
<a name="l01301"></a>01301 }
<a name="l01302"></a>01302 }
<a name="l01303"></a>01303
<a name="l01304"></a>01304 <span class="keywordflow">return</span> dst;
<a name="l01305"></a>01305 }
<a name="l01306"></a>01306
<a name="l01307"></a>01307 <span class="comment">// Nice and fast direct pixel manipulation</span>
<a name="l01308"></a><a class="code" href="classKImageEffect.html#a3807184ad11ae02e6b687b9dd2b3ed36">01308</a> <a class="codeRef" href="qimage.html">QImage</a>& <a class="code" href="classKImageEffect.html#aeb41c4a7748892c4a58537876d2b4a43" title="Blends a color into the destination image, using an opacity value for blending one into another...">KImageEffect::blend</a>(<a class="codeRef" href="qimage.html">QImage</a>& src, <a class="codeRef" href="qimage.html">QImage</a>& dst, <span class="keywordtype">float</span> opacity)
<a name="l01309"></a>01309 {
<a name="l01310"></a>01310 <span class="keywordflow">if</span> (src.<a class="codeRef" href="qimage.html#width">width</a>() <= 0 || src.<a class="codeRef" href="qimage.html#height">height</a>() <= 0)
<a name="l01311"></a>01311 <span class="keywordflow">return</span> dst;
<a name="l01312"></a>01312 <span class="keywordflow">if</span> (dst.<a class="codeRef" href="qimage.html#width">width</a>() <= 0 || dst.<a class="codeRef" href="qimage.html#height">height</a>() <= 0)
<a name="l01313"></a>01313 <span class="keywordflow">return</span> dst;
<a name="l01314"></a>01314
<a name="l01315"></a>01315 <span class="keywordflow">if</span> (src.<a class="codeRef" href="qimage.html#width">width</a>() != dst.<a class="codeRef" href="qimage.html#width">width</a>() || src.<a class="codeRef" href="qimage.html#height">height</a>() != dst.<a class="codeRef" href="qimage.html#height">height</a>()) {
<a name="l01316"></a>01316 <span class="preprocessor">#ifndef NDEBUG</span>
<a name="l01317"></a>01317 <span class="preprocessor"></span> std::cerr << <span class="stringliteral">"WARNING: KImageEffect::blend : src and destination images are not the same size\n"</span>;
<a name="l01318"></a>01318 <span class="preprocessor">#endif</span>
<a name="l01319"></a>01319 <span class="preprocessor"></span> <span class="keywordflow">return</span> dst;
<a name="l01320"></a>01320 }
<a name="l01321"></a>01321
<a name="l01322"></a>01322 <span class="keywordflow">if</span> (opacity < 0.0 || opacity > 1.0) {
<a name="l01323"></a>01323 <span class="preprocessor">#ifndef NDEBUG</span>
<a name="l01324"></a>01324 <span class="preprocessor"></span> std::cerr << <span class="stringliteral">"WARNING: KImageEffect::blend : invalid opacity. Range [0, 1]\n"</span>;
<a name="l01325"></a>01325 <span class="preprocessor">#endif</span>
<a name="l01326"></a>01326 <span class="preprocessor"></span> <span class="keywordflow">return</span> dst;
<a name="l01327"></a>01327 }
<a name="l01328"></a>01328
<a name="l01329"></a>01329 <span class="keywordflow">if</span> (src.<a class="codeRef" href="qimage.html#depth">depth</a>() != 32) src = src.<a class="codeRef" href="qimage.html#convertDepth">convertDepth</a>(32);
<a name="l01330"></a>01330 <span class="keywordflow">if</span> (dst.<a class="codeRef" href="qimage.html#depth">depth</a>() != 32) dst = dst.<a class="codeRef" href="qimage.html#convertDepth">convertDepth</a>(32);
<a name="l01331"></a>01331
<a name="l01332"></a>01332 <span class="keywordtype">int</span> pixels = src.<a class="codeRef" href="qimage.html#width">width</a>() * src.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l01333"></a>01333
<a name="l01334"></a>01334 <span class="preprocessor">#ifdef USE_SSE2_INLINE_ASM</span>
<a name="l01335"></a>01335 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( <a class="code" href="classKCPUInfo.html#a4c4dde7c9f4549591681b706fd26f396" title="Returns true if the processor supports extension, and false otherwise.">KCPUInfo::haveExtension</a>( <a class="code" href="classKCPUInfo.html#adaead16555bac8cd592d9ea885138400a585e8672783aae9aff407f3ab8b7bb45" title="Intel's SSE2 instructions.">KCPUInfo::IntelSSE2</a> ) && pixels > 16 ) {
<a name="l01336"></a>01336 Q_UINT16 alpha = Q_UINT16( opacity * 256.0 );
<a name="l01337"></a>01337 KIE8Pack packedalpha = { { alpha, alpha, alpha, 0,
<a name="l01338"></a>01338 alpha, alpha, alpha, 0 } };
<a name="l01339"></a>01339
<a name="l01340"></a>01340 <span class="comment">// Prepare the XMM6 and XMM7 registers for unpacking and blending</span>
<a name="l01341"></a>01341 __asm__ __volatile__(
<a name="l01342"></a>01342 <span class="stringliteral">"pxor %%xmm7, %%xmm7\n\t"</span> <span class="comment">// Zero out XMM7 for unpacking</span>
<a name="l01343"></a>01343 <span class="stringliteral">"movdqu (%0), %%xmm6\n\t"</span> <span class="comment">// Set up alpha * 256 in XMM6</span>
<a name="l01344"></a>01344 : : <span class="stringliteral">"r"</span>(&packedalpha), <span class="stringliteral">"m"</span>(packedalpha) );
<a name="l01345"></a>01345
<a name="l01346"></a>01346 Q_UINT32 *data1 = <span class="keyword">reinterpret_cast<</span>Q_UINT32*<span class="keyword">></span>( src.<a class="codeRef" href="qimage.html#bits">bits</a>() );
<a name="l01347"></a>01347 Q_UINT32 *data2 = <span class="keyword">reinterpret_cast<</span>Q_UINT32*<span class="keyword">></span>( dst.<a class="codeRef" href="qimage.html#bits">bits</a>() );
<a name="l01348"></a>01348
<a name="l01349"></a>01349 <span class="comment">// Check how many pixels we need to process to achieve 16 byte alignment</span>
<a name="l01350"></a>01350 <span class="keywordtype">int</span> offset = (16 - (Q_UINT32( data2 ) & 0x0f)) / 4;
<a name="l01351"></a>01351
<a name="l01352"></a>01352 <span class="comment">// The main loop processes 4 pixels / iteration</span>
<a name="l01353"></a>01353 <span class="keywordtype">int</span> remainder = (pixels - offset) % 4;
<a name="l01354"></a>01354 pixels -= remainder;
<a name="l01355"></a>01355
<a name="l01356"></a>01356 <span class="comment">// Alignment loop</span>
<a name="l01357"></a>01357 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = 0; i < offset; i++ ) {
<a name="l01358"></a>01358 __asm__ __volatile__(
<a name="l01359"></a>01359 <span class="stringliteral">"movd (%1,%2,4), %%xmm1\n\t"</span> <span class="comment">// Load one dst pixel to XMM1</span>
<a name="l01360"></a>01360 <span class="stringliteral">"punpcklbw %%xmm7, %%xmm1\n\t"</span> <span class="comment">// Unpack the pixel</span>
<a name="l01361"></a>01361 <span class="stringliteral">"movd (%0,%2,4), %%xmm0\n\t"</span> <span class="comment">// Load one src pixel to XMM0</span>
<a name="l01362"></a>01362 <span class="stringliteral">"punpcklbw %%xmm7, %%xmm0\n\t"</span> <span class="comment">// Unpack the pixel</span>
<a name="l01363"></a>01363 <span class="stringliteral">"psubw %%xmm1, %%xmm0\n\t"</span> <span class="comment">// Subtract dst from src</span>
<a name="l01364"></a>01364 <span class="stringliteral">"pmullw %%xmm6, %%xmm0\n\t"</span> <span class="comment">// Multiply the result with alpha * 256</span>
<a name="l01365"></a>01365 <span class="stringliteral">"psllw $8, %%xmm1\n\t"</span> <span class="comment">// Multiply dst with 256</span>
<a name="l01366"></a>01366 <span class="stringliteral">"paddw %%xmm1, %%xmm0\n\t"</span> <span class="comment">// Add dst to result</span>
<a name="l01367"></a>01367 <span class="stringliteral">"psrlw $8, %%xmm0\n\t"</span> <span class="comment">// Divide by 256</span>
<a name="l01368"></a>01368 <span class="stringliteral">"packuswb %%xmm1, %%xmm0\n\t"</span> <span class="comment">// Pack the pixel to a dword</span>
<a name="l01369"></a>01369 <span class="stringliteral">"movd %%xmm0, (%1,%2,4)\n\t"</span> <span class="comment">// Write the pixel to the image</span>
<a name="l01370"></a>01370 : : <span class="stringliteral">"r"</span>(data1), <span class="stringliteral">"r"</span>(data2), <span class="stringliteral">"r"</span>(i) );
<a name="l01371"></a>01371 }
<a name="l01372"></a>01372
<a name="l01373"></a>01373 <span class="comment">// Main loop</span>
<a name="l01374"></a>01374 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = offset; i < pixels; i += 4 ) {
<a name="l01375"></a>01375 __asm__ __volatile__(
<a name="l01376"></a>01376 <span class="comment">// Load 4 src pixels to XMM0 and XMM2 and 4 dst pixels to XMM1 and XMM3</span>
<a name="l01377"></a>01377 <span class="stringliteral">"movq (%0,%2,4), %%xmm0\n\t"</span> <span class="comment">// Load two src pixels to XMM0</span>
<a name="l01378"></a>01378 <span class="stringliteral">"movq (%1,%2,4), %%xmm1\n\t"</span> <span class="comment">// Load two dst pixels to XMM1</span>
<a name="l01379"></a>01379 <span class="stringliteral">"movq 8(%0,%2,4), %%xmm2\n\t"</span> <span class="comment">// Load two src pixels to XMM2</span>
<a name="l01380"></a>01380 <span class="stringliteral">"movq 8(%1,%2,4), %%xmm3\n\t"</span> <span class="comment">// Load two dst pixels to XMM3</span>
<a name="l01381"></a>01381
<a name="l01382"></a>01382 <span class="comment">// Prefetch the pixels for the iteration after the next one</span>
<a name="l01383"></a>01383 <span class="stringliteral">"prefetchnta 32(%0,%2,4) \n\t"</span>
<a name="l01384"></a>01384 <span class="stringliteral">"prefetchnta 32(%1,%2,4) \n\t"</span>
<a name="l01385"></a>01385
<a name="l01386"></a>01386 <span class="comment">// Blend the first two pixels</span>
<a name="l01387"></a>01387 <span class="stringliteral">"punpcklbw %%xmm7, %%xmm1\n\t"</span> <span class="comment">// Unpack the dst pixels</span>
<a name="l01388"></a>01388 <span class="stringliteral">"punpcklbw %%xmm7, %%xmm0\n\t"</span> <span class="comment">// Unpack the src pixels</span>
<a name="l01389"></a>01389 <span class="stringliteral">"psubw %%xmm1, %%xmm0\n\t"</span> <span class="comment">// Subtract dst from src</span>
<a name="l01390"></a>01390 <span class="stringliteral">"pmullw %%xmm6, %%xmm0\n\t"</span> <span class="comment">// Multiply the result with alpha * 256</span>
<a name="l01391"></a>01391 <span class="stringliteral">"psllw $8, %%xmm1\n\t"</span> <span class="comment">// Multiply dst with 256</span>
<a name="l01392"></a>01392 <span class="stringliteral">"paddw %%xmm1, %%xmm0\n\t"</span> <span class="comment">// Add dst to the result</span>
<a name="l01393"></a>01393 <span class="stringliteral">"psrlw $8, %%xmm0\n\t"</span> <span class="comment">// Divide by 256</span>
<a name="l01394"></a>01394
<a name="l01395"></a>01395 <span class="comment">// Blend the next two pixels</span>
<a name="l01396"></a>01396 <span class="stringliteral">"punpcklbw %%xmm7, %%xmm3\n\t"</span> <span class="comment">// Unpack the dst pixels</span>
<a name="l01397"></a>01397 <span class="stringliteral">"punpcklbw %%xmm7, %%xmm2\n\t"</span> <span class="comment">// Unpack the src pixels</span>
<a name="l01398"></a>01398 <span class="stringliteral">"psubw %%xmm3, %%xmm2\n\t"</span> <span class="comment">// Subtract dst from src</span>
<a name="l01399"></a>01399 <span class="stringliteral">"pmullw %%xmm6, %%xmm2\n\t"</span> <span class="comment">// Multiply the result with alpha * 256</span>
<a name="l01400"></a>01400 <span class="stringliteral">"psllw $8, %%xmm3\n\t"</span> <span class="comment">// Multiply dst with 256</span>
<a name="l01401"></a>01401 <span class="stringliteral">"paddw %%xmm3, %%xmm2\n\t"</span> <span class="comment">// Add dst to the result</span>
<a name="l01402"></a>01402 <span class="stringliteral">"psrlw $8, %%xmm2\n\t"</span> <span class="comment">// Divide by 256</span>
<a name="l01403"></a>01403
<a name="l01404"></a>01404 <span class="comment">// Write the pixels back to the image</span>
<a name="l01405"></a>01405 <span class="stringliteral">"packuswb %%xmm2, %%xmm0\n\t"</span> <span class="comment">// Pack the pixels to a double qword</span>
<a name="l01406"></a>01406 <span class="stringliteral">"movdqa %%xmm0, (%1,%2,4)\n\t"</span> <span class="comment">// Store the pixels</span>
<a name="l01407"></a>01407 : : <span class="stringliteral">"r"</span>(data1), <span class="stringliteral">"r"</span>(data2), <span class="stringliteral">"r"</span>(i) );
<a name="l01408"></a>01408 }
<a name="l01409"></a>01409
<a name="l01410"></a>01410 <span class="comment">// Cleanup loop</span>
<a name="l01411"></a>01411 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = pixels; i < pixels + remainder; i++ ) {
<a name="l01412"></a>01412 __asm__ __volatile__(
<a name="l01413"></a>01413 <span class="stringliteral">"movd (%1,%2,4), %%xmm1\n\t"</span> <span class="comment">// Load one dst pixel to XMM1</span>
<a name="l01414"></a>01414 <span class="stringliteral">"punpcklbw %%xmm7, %%xmm1\n\t"</span> <span class="comment">// Unpack the pixel</span>
<a name="l01415"></a>01415 <span class="stringliteral">"movd (%0,%2,4), %%xmm0\n\t"</span> <span class="comment">// Load one src pixel to XMM0</span>
<a name="l01416"></a>01416 <span class="stringliteral">"punpcklbw %%xmm7, %%xmm0\n\t"</span> <span class="comment">// Unpack the pixel</span>
<a name="l01417"></a>01417 <span class="stringliteral">"psubw %%xmm1, %%xmm0\n\t"</span> <span class="comment">// Subtract dst from src</span>
<a name="l01418"></a>01418 <span class="stringliteral">"pmullw %%xmm6, %%xmm0\n\t"</span> <span class="comment">// Multiply the result with alpha * 256</span>
<a name="l01419"></a>01419 <span class="stringliteral">"psllw $8, %%xmm1\n\t"</span> <span class="comment">// Multiply dst with 256</span>
<a name="l01420"></a>01420 <span class="stringliteral">"paddw %%xmm1, %%xmm0\n\t"</span> <span class="comment">// Add dst to result</span>
<a name="l01421"></a>01421 <span class="stringliteral">"psrlw $8, %%xmm0\n\t"</span> <span class="comment">// Divide by 256</span>
<a name="l01422"></a>01422 <span class="stringliteral">"packuswb %%xmm1, %%xmm0\n\t"</span> <span class="comment">// Pack the pixel to a dword</span>
<a name="l01423"></a>01423 <span class="stringliteral">"movd %%xmm0, (%1,%2,4)\n\t"</span> <span class="comment">// Write the pixel to the image</span>
<a name="l01424"></a>01424 : : <span class="stringliteral">"r"</span>(data1), <span class="stringliteral">"r"</span>(data2), <span class="stringliteral">"r"</span>(i) );
<a name="l01425"></a>01425 }
<a name="l01426"></a>01426 } <span class="keywordflow">else</span>
<a name="l01427"></a>01427 <span class="preprocessor">#endif // USE_SSE2_INLINE_ASM</span>
<a name="l01428"></a>01428 <span class="preprocessor"></span>
<a name="l01429"></a>01429 <span class="preprocessor">#ifdef USE_MMX_INLINE_ASM</span>
<a name="l01430"></a>01430 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( <a class="code" href="classKCPUInfo.html#a4c4dde7c9f4549591681b706fd26f396" title="Returns true if the processor supports extension, and false otherwise.">KCPUInfo::haveExtension</a>( <a class="code" href="classKCPUInfo.html#adaead16555bac8cd592d9ea885138400af247dfcf2e89d3acd449020636ab3902" title="Intel's MMX instructions.">KCPUInfo::IntelMMX</a> ) && pixels > 1 ) {
<a name="l01431"></a>01431 Q_UINT16 alpha = Q_UINT16( opacity * 256.0 );
<a name="l01432"></a>01432 KIE4Pack packedalpha = { { alpha, alpha, alpha, 0 } };
<a name="l01433"></a>01433
<a name="l01434"></a>01434 <span class="comment">// Prepare the MM6 and MM7 registers for blending and unpacking</span>
<a name="l01435"></a>01435 __asm__ __volatile__(
<a name="l01436"></a>01436 <span class="stringliteral">"pxor %%mm7, %%mm7\n\t"</span> <span class="comment">// Zero out MM7 for unpacking</span>
<a name="l01437"></a>01437 <span class="stringliteral">"movq (%0), %%mm6\n\t"</span> <span class="comment">// Set up alpha * 256 in MM6</span>
<a name="l01438"></a>01438 : : <span class="stringliteral">"r"</span>(&packedalpha), <span class="stringliteral">"m"</span>(packedalpha) );
<a name="l01439"></a>01439
<a name="l01440"></a>01440 Q_UINT32 *data1 = <span class="keyword">reinterpret_cast<</span>Q_UINT32*<span class="keyword">></span>( src.<a class="codeRef" href="qimage.html#bits">bits</a>() );
<a name="l01441"></a>01441 Q_UINT32 *data2 = <span class="keyword">reinterpret_cast<</span>Q_UINT32*<span class="keyword">></span>( dst.<a class="codeRef" href="qimage.html#bits">bits</a>() );
<a name="l01442"></a>01442
<a name="l01443"></a>01443 <span class="comment">// The main loop processes 2 pixels / iteration</span>
<a name="l01444"></a>01444 <span class="keywordtype">int</span> remainder = pixels % 2;
<a name="l01445"></a>01445 pixels -= remainder;
<a name="l01446"></a>01446
<a name="l01447"></a>01447 <span class="comment">// Main loop</span>
<a name="l01448"></a>01448 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = 0; i < pixels; i += 2 ) {
<a name="l01449"></a>01449 __asm__ __volatile__(
<a name="l01450"></a>01450 <span class="comment">// Load 2 src pixels to MM0 and MM2 and 2 dst pixels to MM1 and MM3</span>
<a name="l01451"></a>01451 <span class="stringliteral">"movd (%0,%2,4), %%mm0\n\t"</span> <span class="comment">// Load the 1st src pixel to MM0</span>
<a name="l01452"></a>01452 <span class="stringliteral">"movd (%1,%2,4), %%mm1\n\t"</span> <span class="comment">// Load the 1st dst pixel to MM1</span>
<a name="l01453"></a>01453 <span class="stringliteral">"movd 4(%0,%2,4), %%mm2\n\t"</span> <span class="comment">// Load the 2nd src pixel to MM2</span>
<a name="l01454"></a>01454 <span class="stringliteral">"movd 4(%1,%2,4), %%mm3\n\t"</span> <span class="comment">// Load the 2nd dst pixel to MM3</span>
<a name="l01455"></a>01455
<a name="l01456"></a>01456 <span class="comment">// Blend the first pixel</span>
<a name="l01457"></a>01457 <span class="stringliteral">"punpcklbw %%mm7, %%mm0\n\t"</span> <span class="comment">// Unpack the src pixel</span>
<a name="l01458"></a>01458 <span class="stringliteral">"punpcklbw %%mm7, %%mm1\n\t"</span> <span class="comment">// Unpack the dst pixel</span>
<a name="l01459"></a>01459 <span class="stringliteral">"psubw %%mm1, %%mm0\n\t"</span> <span class="comment">// Subtract dst from src</span>
<a name="l01460"></a>01460 <span class="stringliteral">"pmullw %%mm6, %%mm0\n\t"</span> <span class="comment">// Multiply the result with alpha * 256</span>
<a name="l01461"></a>01461 <span class="stringliteral">"psllw $8, %%mm1\n\t"</span> <span class="comment">// Multiply dst with 256</span>
<a name="l01462"></a>01462 <span class="stringliteral">"paddw %%mm1, %%mm0\n\t"</span> <span class="comment">// Add dst to the result</span>
<a name="l01463"></a>01463 <span class="stringliteral">"psrlw $8, %%mm0\n\t"</span> <span class="comment">// Divide by 256</span>
<a name="l01464"></a>01464
<a name="l01465"></a>01465 <span class="comment">// Blend the second pixel</span>
<a name="l01466"></a>01466 <span class="stringliteral">"punpcklbw %%mm7, %%mm2\n\t"</span> <span class="comment">// Unpack the src pixel</span>
<a name="l01467"></a>01467 <span class="stringliteral">"punpcklbw %%mm7, %%mm3\n\t"</span> <span class="comment">// Unpack the dst pixel</span>
<a name="l01468"></a>01468 <span class="stringliteral">"psubw %%mm3, %%mm2\n\t"</span> <span class="comment">// Subtract dst from src</span>
<a name="l01469"></a>01469 <span class="stringliteral">"pmullw %%mm6, %%mm2\n\t"</span> <span class="comment">// Multiply the result with alpha * 256</span>
<a name="l01470"></a>01470 <span class="stringliteral">"psllw $8, %%mm3\n\t"</span> <span class="comment">// Multiply dst with 256</span>
<a name="l01471"></a>01471 <span class="stringliteral">"paddw %%mm3, %%mm2\n\t"</span> <span class="comment">// Add dst to the result</span>
<a name="l01472"></a>01472 <span class="stringliteral">"psrlw $8, %%mm2\n\t"</span> <span class="comment">// Divide by 256</span>
<a name="l01473"></a>01473
<a name="l01474"></a>01474 <span class="comment">// Write the pixels back to the image</span>
<a name="l01475"></a>01475 <span class="stringliteral">"packuswb %%mm2, %%mm0\n\t"</span> <span class="comment">// Pack the pixels to a qword</span>
<a name="l01476"></a>01476 <span class="stringliteral">"movq %%mm0, (%1,%2,4)\n\t"</span> <span class="comment">// Store the pixels</span>
<a name="l01477"></a>01477 : : <span class="stringliteral">"r"</span>(data1), <span class="stringliteral">"r"</span>(data2), <span class="stringliteral">"r"</span>(i) );
<a name="l01478"></a>01478 }
<a name="l01479"></a>01479
<a name="l01480"></a>01480 <span class="comment">// Blend the remaining pixel (if there is one)</span>
<a name="l01481"></a>01481 <span class="keywordflow">if</span> ( remainder ) {
<a name="l01482"></a>01482 __asm__ __volatile__(
<a name="l01483"></a>01483 <span class="stringliteral">"movd (%0), %%mm0\n\t"</span> <span class="comment">// Load one src pixel to MM0</span>
<a name="l01484"></a>01484 <span class="stringliteral">"punpcklbw %%mm7, %%mm0\n\t"</span> <span class="comment">// Unpack the src pixel</span>
<a name="l01485"></a>01485 <span class="stringliteral">"movd (%1), %%mm1\n\t"</span> <span class="comment">// Load one dst pixel to MM1</span>
<a name="l01486"></a>01486 <span class="stringliteral">"punpcklbw %%mm7, %%mm1\n\t"</span> <span class="comment">// Unpack the dst pixel</span>
<a name="l01487"></a>01487 <span class="stringliteral">"psubw %%mm1, %%mm0\n\t"</span> <span class="comment">// Subtract dst from src</span>
<a name="l01488"></a>01488 <span class="stringliteral">"pmullw %%mm6, %%mm0\n\t"</span> <span class="comment">// Multiply the result with alpha * 256</span>
<a name="l01489"></a>01489 <span class="stringliteral">"psllw $8, %%mm1\n\t"</span> <span class="comment">// Multiply dst with 256</span>
<a name="l01490"></a>01490 <span class="stringliteral">"paddw %%mm1, %%mm0\n\t"</span> <span class="comment">// Add dst to result</span>
<a name="l01491"></a>01491 <span class="stringliteral">"psrlw $8, %%mm0\n\t"</span> <span class="comment">// Divide by 256</span>
<a name="l01492"></a>01492 <span class="stringliteral">"packuswb %%mm0, %%mm0\n\t"</span> <span class="comment">// Pack the pixel to a dword</span>
<a name="l01493"></a>01493 <span class="stringliteral">"movd %%mm0, (%1)\n\t"</span> <span class="comment">// Write the pixel to the image</span>
<a name="l01494"></a>01494 : : <span class="stringliteral">"r"</span>(data1 + pixels), <span class="stringliteral">"r"</span>(data2 + pixels) );
<a name="l01495"></a>01495 }
<a name="l01496"></a>01496
<a name="l01497"></a>01497 <span class="comment">// Empty the MMX state</span>
<a name="l01498"></a>01498 __asm__ __volatile__(<span class="stringliteral">"emms"</span>);
<a name="l01499"></a>01499 } <span class="keywordflow">else</span>
<a name="l01500"></a>01500 <span class="preprocessor">#endif // USE_MMX_INLINE_ASM</span>
<a name="l01501"></a>01501 <span class="preprocessor"></span>
<a name="l01502"></a>01502 {
<a name="l01503"></a>01503 <span class="preprocessor">#ifdef WORDS_BIGENDIAN // ARGB (skip alpha)</span>
<a name="l01504"></a>01504 <span class="preprocessor"></span> <span class="keyword">register</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *data1 = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)dst.<a class="codeRef" href="qimage.html#bits">bits</a>() + 1;
<a name="l01505"></a>01505 <span class="keyword">register</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *data2 = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)src.<a class="codeRef" href="qimage.html#bits">bits</a>() + 1;
<a name="l01506"></a>01506 <span class="preprocessor">#else // BGRA</span>
<a name="l01507"></a>01507 <span class="preprocessor"></span> <span class="keyword">register</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *data1 = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)dst.<a class="codeRef" href="qimage.html#bits">bits</a>();
<a name="l01508"></a>01508 <span class="keyword">register</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *data2 = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)src.<a class="codeRef" href="qimage.html#bits">bits</a>();
<a name="l01509"></a>01509 <span class="preprocessor">#endif</span>
<a name="l01510"></a>01510 <span class="preprocessor"></span>
<a name="l01511"></a>01511 <span class="keywordflow">for</span> (<span class="keyword">register</span> <span class="keywordtype">int</span> i=0; i<pixels; i++)
<a name="l01512"></a>01512 {
<a name="l01513"></a>01513 <span class="preprocessor">#ifdef WORDS_BIGENDIAN</span>
<a name="l01514"></a>01514 <span class="preprocessor"></span> *data1 += (<span class="keywordtype">unsigned</span> char)((*(data2++) - *data1) * opacity);
<a name="l01515"></a>01515 data1++;
<a name="l01516"></a>01516 *data1 += (<span class="keywordtype">unsigned</span> char)((*(data2++) - *data1) * opacity);
<a name="l01517"></a>01517 data1++;
<a name="l01518"></a>01518 *data1 += (<span class="keywordtype">unsigned</span> char)((*(data2++) - *data1) * opacity);
<a name="l01519"></a>01519 data1++;
<a name="l01520"></a>01520 <span class="preprocessor">#else</span>
<a name="l01521"></a>01521 <span class="preprocessor"></span> *data1 += (<span class="keywordtype">unsigned</span> char)((*(data2++) - *data1) * opacity);
<a name="l01522"></a>01522 data1++;
<a name="l01523"></a>01523 *data1 += (<span class="keywordtype">unsigned</span> char)((*(data2++) - *data1) * opacity);
<a name="l01524"></a>01524 data1++;
<a name="l01525"></a>01525 *data1 += (<span class="keywordtype">unsigned</span> char)((*(data2++) - *data1) * opacity);
<a name="l01526"></a>01526 data1++;
<a name="l01527"></a>01527 <span class="preprocessor">#endif</span>
<a name="l01528"></a>01528 <span class="preprocessor"></span> data1++; <span class="comment">// skip alpha</span>
<a name="l01529"></a>01529 data2++;
<a name="l01530"></a>01530 }
<a name="l01531"></a>01531 }
<a name="l01532"></a>01532
<a name="l01533"></a>01533 <span class="keywordflow">return</span> dst;
<a name="l01534"></a>01534 }
<a name="l01535"></a>01535
<a name="l01536"></a>01536
<a name="l01537"></a><a class="code" href="classKImageEffect.html#a7f2e3088e4e5b6e591ae66700b6ab729">01537</a> <a class="codeRef" href="qimage.html">QImage</a>& <a class="code" href="classKImageEffect.html#aeb41c4a7748892c4a58537876d2b4a43" title="Blends a color into the destination image, using an opacity value for blending one into another...">KImageEffect::blend</a>(<a class="codeRef" href="qimage.html">QImage</a> &image, <span class="keywordtype">float</span> initial_intensity,
<a name="l01538"></a>01538 <span class="keyword">const</span> <a class="codeRef" href="qcolor.html">QColor</a> &bgnd, <a class="code" href="classKImageEffect.html#a5dd7fcdf794dd35c23082a1f5327cb74" title="This enum provides a gradient type specification.">GradientType</a> eff,
<a name="l01539"></a>01539 <span class="keywordtype">bool</span> anti_dir)
<a name="l01540"></a>01540 {
<a name="l01541"></a>01541 <span class="keywordflow">if</span> (image.<a class="codeRef" href="qimage.html#width">width</a>() == 0 || image.<a class="codeRef" href="qimage.html#height">height</a>() == 0 || image.<a class="codeRef" href="qimage.html#depth">depth</a>()!=32 ) {
<a name="l01542"></a>01542 <span class="preprocessor">#ifndef NDEBUG</span>
<a name="l01543"></a>01543 <span class="preprocessor"></span> std::cerr << <span class="stringliteral">"WARNING: KImageEffect::blend : invalid image\n"</span>;
<a name="l01544"></a>01544 <span class="preprocessor">#endif</span>
<a name="l01545"></a>01545 <span class="preprocessor"></span> <span class="keywordflow">return</span> image;
<a name="l01546"></a>01546 }
<a name="l01547"></a>01547
<a name="l01548"></a>01548 <span class="keywordtype">int</span> r_bgnd = bgnd.<a class="codeRef" href="qcolor.html#red">red</a>(), g_bgnd = bgnd.<a class="codeRef" href="qcolor.html#green">green</a>(), b_bgnd = bgnd.<a class="codeRef" href="qcolor.html#blue">blue</a>();
<a name="l01549"></a>01549 <span class="keywordtype">int</span> r, g, b;
<a name="l01550"></a>01550 <span class="keywordtype">int</span> ind;
<a name="l01551"></a>01551
<a name="l01552"></a>01552 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> xi, xf, yi, yf;
<a name="l01553"></a>01553 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> a;
<a name="l01554"></a>01554
<a name="l01555"></a>01555 <span class="comment">// check the boundaries of the initial intesity param</span>
<a name="l01556"></a>01556 <span class="keywordtype">float</span> unaffected = 1;
<a name="l01557"></a>01557 <span class="keywordflow">if</span> (initial_intensity > 1) initial_intensity = 1;
<a name="l01558"></a>01558 <span class="keywordflow">if</span> (initial_intensity < -1) initial_intensity = -1;
<a name="l01559"></a>01559 <span class="keywordflow">if</span> (initial_intensity < 0) {
<a name="l01560"></a>01560 unaffected = 1. + initial_intensity;
<a name="l01561"></a>01561 initial_intensity = 0;
<a name="l01562"></a>01562 }
<a name="l01563"></a>01563
<a name="l01564"></a>01564
<a name="l01565"></a>01565 <span class="keywordtype">float</span> <a class="code" href="classKImageEffect.html#a02114d1df26d4b8905cfd97d01559991" title="Either brighten or dim the image by a specified percent.">intensity</a> = initial_intensity;
<a name="l01566"></a>01566 <span class="keywordtype">float</span> var = 1. - initial_intensity;
<a name="l01567"></a>01567
<a name="l01568"></a>01568 <span class="keywordflow">if</span> (anti_dir) {
<a name="l01569"></a>01569 initial_intensity = intensity = 1.;
<a name="l01570"></a>01570 var = -var;
<a name="l01571"></a>01571 }
<a name="l01572"></a>01572
<a name="l01573"></a>01573 <span class="keyword">register</span> <span class="keywordtype">int</span> x, y;
<a name="l01574"></a>01574
<a name="l01575"></a>01575 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *data = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image.<a class="codeRef" href="qimage.html#bits">bits</a>();
<a name="l01576"></a>01576
<a name="l01577"></a>01577 <span class="keywordtype">int</span> image_width = image.<a class="codeRef" href="qimage.html#width">width</a>(); <span class="comment">//Those can't change</span>
<a name="l01578"></a>01578 <span class="keywordtype">int</span> image_height = image.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l01579"></a>01579
<a name="l01580"></a>01580
<a name="l01581"></a>01581 <span class="keywordflow">if</span>( eff == VerticalGradient || eff == HorizontalGradient ) {
<a name="l01582"></a>01582
<a name="l01583"></a>01583 <span class="comment">// set the image domain to apply the effect to</span>
<a name="l01584"></a>01584 xi = 0, xf = image_width;
<a name="l01585"></a>01585 yi = 0, yf = image_height;
<a name="l01586"></a>01586 <span class="keywordflow">if</span> (eff == VerticalGradient) {
<a name="l01587"></a>01587 <span class="keywordflow">if</span> (anti_dir) yf = (int)(image_height * unaffected);
<a name="l01588"></a>01588 <span class="keywordflow">else</span> yi = (int)(image_height * (1 - unaffected));
<a name="l01589"></a>01589 }
<a name="l01590"></a>01590 <span class="keywordflow">else</span> {
<a name="l01591"></a>01591 <span class="keywordflow">if</span> (anti_dir) xf = (int)(image_width * unaffected);
<a name="l01592"></a>01592 <span class="keywordflow">else</span> xi = (int)(image_height * (1 - unaffected));
<a name="l01593"></a>01593 }
<a name="l01594"></a>01594
<a name="l01595"></a>01595 var /= (eff == VerticalGradient?yf-yi:xf-xi);
<a name="l01596"></a>01596
<a name="l01597"></a>01597 <span class="keywordtype">int</span> ind_base;
<a name="l01598"></a>01598 <span class="keywordflow">for</span> (y = yi; y < (int)yf; y++) {
<a name="l01599"></a>01599 intensity = eff == VerticalGradient? intensity + var :
<a name="l01600"></a>01600 initial_intensity;
<a name="l01601"></a>01601 ind_base = image_width * y ;
<a name="l01602"></a>01602 <span class="keywordflow">for</span> (x = xi; x < (int)xf ; x++) {
<a name="l01603"></a>01603 <span class="keywordflow">if</span> (eff == HorizontalGradient) intensity += var;
<a name="l01604"></a>01604 ind = x + ind_base;
<a name="l01605"></a>01605 r = qRed (data[ind]) + (int)(intensity *
<a name="l01606"></a>01606 (r_bgnd - qRed (data[ind])));
<a name="l01607"></a>01607 g = qGreen(data[ind]) + (int)(intensity *
<a name="l01608"></a>01608 (g_bgnd - qGreen(data[ind])));
<a name="l01609"></a>01609 b = qBlue (data[ind]) + (int)(intensity *
<a name="l01610"></a>01610 (b_bgnd - qBlue (data[ind])));
<a name="l01611"></a>01611 <span class="keywordflow">if</span> (r > 255) r = 255; <span class="keywordflow">if</span> (r < 0 ) r = 0;
<a name="l01612"></a>01612 <span class="keywordflow">if</span> (g > 255) g = 255; <span class="keywordflow">if</span> (g < 0 ) g = 0;
<a name="l01613"></a>01613 <span class="keywordflow">if</span> (b > 255) b = 255; <span class="keywordflow">if</span> (b < 0 ) b = 0;
<a name="l01614"></a>01614 a = qAlpha(data[ind]);
<a name="l01615"></a>01615 data[ind] = qRgba(r, g, b, a);
<a name="l01616"></a>01616 }
<a name="l01617"></a>01617 }
<a name="l01618"></a>01618 }
<a name="l01619"></a>01619 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (eff == DiagonalGradient || eff == CrossDiagonalGradient) {
<a name="l01620"></a>01620 <span class="keywordtype">float</span> xvar = var / 2 / image_width; <span class="comment">// / unaffected;</span>
<a name="l01621"></a>01621 <span class="keywordtype">float</span> yvar = var / 2 / image_height; <span class="comment">// / unaffected;</span>
<a name="l01622"></a>01622 <span class="keywordtype">float</span> tmp;
<a name="l01623"></a>01623
<a name="l01624"></a>01624 <span class="keywordflow">for</span> (x = 0; x < image_width ; x++) {
<a name="l01625"></a>01625 tmp = xvar * (eff == DiagonalGradient? x : image.<a class="codeRef" href="qimage.html#width">width</a>()-x-1);
<a name="l01626"></a>01626 ind = x;
<a name="l01627"></a>01627 <span class="keywordflow">for</span> (y = 0; y < image_height ; y++) {
<a name="l01628"></a>01628 intensity = initial_intensity + tmp + yvar * y;
<a name="l01629"></a>01629
<a name="l01630"></a>01630 r = qRed (data[ind]) + (int)(intensity *
<a name="l01631"></a>01631 (r_bgnd - qRed (data[ind])));
<a name="l01632"></a>01632 g = qGreen(data[ind]) + (int)(intensity *
<a name="l01633"></a>01633 (g_bgnd - qGreen(data[ind])));
<a name="l01634"></a>01634 b = qBlue (data[ind]) + (int)(intensity *
<a name="l01635"></a>01635 (b_bgnd - qBlue (data[ind])));
<a name="l01636"></a>01636 <span class="keywordflow">if</span> (r > 255) r = 255; <span class="keywordflow">if</span> (r < 0 ) r = 0;
<a name="l01637"></a>01637 <span class="keywordflow">if</span> (g > 255) g = 255; <span class="keywordflow">if</span> (g < 0 ) g = 0;
<a name="l01638"></a>01638 <span class="keywordflow">if</span> (b > 255) b = 255; <span class="keywordflow">if</span> (b < 0 ) b = 0;
<a name="l01639"></a>01639 a = qAlpha(data[ind]);
<a name="l01640"></a>01640 data[ind] = qRgba(r, g, b, a);
<a name="l01641"></a>01641
<a name="l01642"></a>01642 ind += image_width;
<a name="l01643"></a>01643 }
<a name="l01644"></a>01644 }
<a name="l01645"></a>01645 }
<a name="l01646"></a>01646
<a name="l01647"></a>01647 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (eff == RectangleGradient || eff == EllipticGradient) {
<a name="l01648"></a>01648 <span class="keywordtype">float</span> xvar;
<a name="l01649"></a>01649 <span class="keywordtype">float</span> yvar;
<a name="l01650"></a>01650
<a name="l01651"></a>01651 <span class="keywordflow">for</span> (x = 0; x < image_width / 2 + image_width % 2; x++) {
<a name="l01652"></a>01652 xvar = var / image_width * (image_width - x*2/unaffected-1);
<a name="l01653"></a>01653 <span class="keywordflow">for</span> (y = 0; y < image_height / 2 + image_height % 2; y++) {
<a name="l01654"></a>01654 yvar = var / image_height * (image_height - y*2/unaffected -1);
<a name="l01655"></a>01655
<a name="l01656"></a>01656 <span class="keywordflow">if</span> (eff == RectangleGradient)
<a name="l01657"></a>01657 intensity = initial_intensity + QMAX(xvar, yvar);
<a name="l01658"></a>01658 <span class="keywordflow">else</span>
<a name="l01659"></a>01659 intensity = initial_intensity + sqrt(xvar * xvar + yvar * yvar);
<a name="l01660"></a>01660 <span class="keywordflow">if</span> (intensity > 1) intensity = 1;
<a name="l01661"></a>01661 <span class="keywordflow">if</span> (intensity < 0) intensity = 0;
<a name="l01662"></a>01662
<a name="l01663"></a>01663 <span class="comment">//NW</span>
<a name="l01664"></a>01664 ind = x + image_width * y ;
<a name="l01665"></a>01665 r = qRed (data[ind]) + (int)(intensity *
<a name="l01666"></a>01666 (r_bgnd - qRed (data[ind])));
<a name="l01667"></a>01667 g = qGreen(data[ind]) + (int)(intensity *
<a name="l01668"></a>01668 (g_bgnd - qGreen(data[ind])));
<a name="l01669"></a>01669 b = qBlue (data[ind]) + (int)(intensity *
<a name="l01670"></a>01670 (b_bgnd - qBlue (data[ind])));
<a name="l01671"></a>01671 <span class="keywordflow">if</span> (r > 255) r = 255; <span class="keywordflow">if</span> (r < 0 ) r = 0;
<a name="l01672"></a>01672 <span class="keywordflow">if</span> (g > 255) g = 255; <span class="keywordflow">if</span> (g < 0 ) g = 0;
<a name="l01673"></a>01673 <span class="keywordflow">if</span> (b > 255) b = 255; <span class="keywordflow">if</span> (b < 0 ) b = 0;
<a name="l01674"></a>01674 a = qAlpha(data[ind]);
<a name="l01675"></a>01675 data[ind] = qRgba(r, g, b, a);
<a name="l01676"></a>01676
<a name="l01677"></a>01677 <span class="comment">//NE</span>
<a name="l01678"></a>01678 ind = image_width - x - 1 + image_width * y ;
<a name="l01679"></a>01679 r = qRed (data[ind]) + (int)(intensity *
<a name="l01680"></a>01680 (r_bgnd - qRed (data[ind])));
<a name="l01681"></a>01681 g = qGreen(data[ind]) + (int)(intensity *
<a name="l01682"></a>01682 (g_bgnd - qGreen(data[ind])));
<a name="l01683"></a>01683 b = qBlue (data[ind]) + (int)(intensity *
<a name="l01684"></a>01684 (b_bgnd - qBlue (data[ind])));
<a name="l01685"></a>01685 <span class="keywordflow">if</span> (r > 255) r = 255; <span class="keywordflow">if</span> (r < 0 ) r = 0;
<a name="l01686"></a>01686 <span class="keywordflow">if</span> (g > 255) g = 255; <span class="keywordflow">if</span> (g < 0 ) g = 0;
<a name="l01687"></a>01687 <span class="keywordflow">if</span> (b > 255) b = 255; <span class="keywordflow">if</span> (b < 0 ) b = 0;
<a name="l01688"></a>01688 a = qAlpha(data[ind]);
<a name="l01689"></a>01689 data[ind] = qRgba(r, g, b, a);
<a name="l01690"></a>01690 }
<a name="l01691"></a>01691 }
<a name="l01692"></a>01692
<a name="l01693"></a>01693 <span class="comment">//CT loop is doubled because of stupid central row/column issue.</span>
<a name="l01694"></a>01694 <span class="comment">// other solution?</span>
<a name="l01695"></a>01695 <span class="keywordflow">for</span> (x = 0; x < image_width / 2; x++) {
<a name="l01696"></a>01696 xvar = var / image_width * (image_width - x*2/unaffected-1);
<a name="l01697"></a>01697 <span class="keywordflow">for</span> (y = 0; y < image_height / 2; y++) {
<a name="l01698"></a>01698 yvar = var / image_height * (image_height - y*2/unaffected -1);
<a name="l01699"></a>01699
<a name="l01700"></a>01700 <span class="keywordflow">if</span> (eff == RectangleGradient)
<a name="l01701"></a>01701 intensity = initial_intensity + QMAX(xvar, yvar);
<a name="l01702"></a>01702 <span class="keywordflow">else</span>
<a name="l01703"></a>01703 intensity = initial_intensity + sqrt(xvar * xvar + yvar * yvar);
<a name="l01704"></a>01704 <span class="keywordflow">if</span> (intensity > 1) intensity = 1;
<a name="l01705"></a>01705 <span class="keywordflow">if</span> (intensity < 0) intensity = 0;
<a name="l01706"></a>01706
<a name="l01707"></a>01707 <span class="comment">//SW</span>
<a name="l01708"></a>01708 ind = x + image_width * (image_height - y -1) ;
<a name="l01709"></a>01709 r = qRed (data[ind]) + (int)(intensity *
<a name="l01710"></a>01710 (r_bgnd - qRed (data[ind])));
<a name="l01711"></a>01711 g = qGreen(data[ind]) + (int)(intensity *
<a name="l01712"></a>01712 (g_bgnd - qGreen(data[ind])));
<a name="l01713"></a>01713 b = qBlue (data[ind]) + (int)(intensity *
<a name="l01714"></a>01714 (b_bgnd - qBlue (data[ind])));
<a name="l01715"></a>01715 <span class="keywordflow">if</span> (r > 255) r = 255; <span class="keywordflow">if</span> (r < 0 ) r = 0;
<a name="l01716"></a>01716 <span class="keywordflow">if</span> (g > 255) g = 255; <span class="keywordflow">if</span> (g < 0 ) g = 0;
<a name="l01717"></a>01717 <span class="keywordflow">if</span> (b > 255) b = 255; <span class="keywordflow">if</span> (b < 0 ) b = 0;
<a name="l01718"></a>01718 a = qAlpha(data[ind]);
<a name="l01719"></a>01719 data[ind] = qRgba(r, g, b, a);
<a name="l01720"></a>01720
<a name="l01721"></a>01721 <span class="comment">//SE</span>
<a name="l01722"></a>01722 ind = image_width-x-1 + image_width * (image_height - y - 1) ;
<a name="l01723"></a>01723 r = qRed (data[ind]) + (int)(intensity *
<a name="l01724"></a>01724 (r_bgnd - qRed (data[ind])));
<a name="l01725"></a>01725 g = qGreen(data[ind]) + (int)(intensity *
<a name="l01726"></a>01726 (g_bgnd - qGreen(data[ind])));
<a name="l01727"></a>01727 b = qBlue (data[ind]) + (int)(intensity *
<a name="l01728"></a>01728 (b_bgnd - qBlue (data[ind])));
<a name="l01729"></a>01729 <span class="keywordflow">if</span> (r > 255) r = 255; <span class="keywordflow">if</span> (r < 0 ) r = 0;
<a name="l01730"></a>01730 <span class="keywordflow">if</span> (g > 255) g = 255; <span class="keywordflow">if</span> (g < 0 ) g = 0;
<a name="l01731"></a>01731 <span class="keywordflow">if</span> (b > 255) b = 255; <span class="keywordflow">if</span> (b < 0 ) b = 0;
<a name="l01732"></a>01732 a = qAlpha(data[ind]);
<a name="l01733"></a>01733 data[ind] = qRgba(r, g, b, a);
<a name="l01734"></a>01734 }
<a name="l01735"></a>01735 }
<a name="l01736"></a>01736 }
<a name="l01737"></a>01737 <span class="preprocessor">#ifndef NDEBUG</span>
<a name="l01738"></a>01738 <span class="preprocessor"></span> <span class="keywordflow">else</span> std::cerr << <span class="stringliteral">"KImageEffect::blend effect not implemented"</span> << <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/group__kdebug.html#ga313d520ed8f8f6b46eeef22cfb3b082a">std::endl</a>;
<a name="l01739"></a>01739 <span class="preprocessor">#endif</span>
<a name="l01740"></a>01740 <span class="preprocessor"></span> <span class="keywordflow">return</span> image;
<a name="l01741"></a>01741 }
<a name="l01742"></a>01742
<a name="l01743"></a>01743 <span class="comment">// Not very efficient as we create a third big image...</span>
<a name="l01744"></a>01744 <span class="comment">//</span>
<a name="l01745"></a><a class="code" href="classKImageEffect.html#a424923afea9e4352f6c4117260eaedaa">01745</a> <a class="codeRef" href="qimage.html">QImage</a>& <a class="code" href="classKImageEffect.html#aeb41c4a7748892c4a58537876d2b4a43" title="Blends a color into the destination image, using an opacity value for blending one into another...">KImageEffect::blend</a>(<a class="codeRef" href="qimage.html">QImage</a> &image1, <a class="codeRef" href="qimage.html">QImage</a> &image2,
<a name="l01746"></a>01746 <a class="code" href="classKImageEffect.html#a5dd7fcdf794dd35c23082a1f5327cb74" title="This enum provides a gradient type specification.">GradientType</a> gt, <span class="keywordtype">int</span> xf, <span class="keywordtype">int</span> yf)
<a name="l01747"></a>01747 {
<a name="l01748"></a>01748 <span class="keywordflow">if</span> (image1.<a class="codeRef" href="qimage.html#width">width</a>() == 0 || image1.<a class="codeRef" href="qimage.html#height">height</a>() == 0 ||
<a name="l01749"></a>01749 image2.<a class="codeRef" href="qimage.html#width">width</a>() == 0 || image2.<a class="codeRef" href="qimage.html#height">height</a>() == 0)
<a name="l01750"></a>01750 <span class="keywordflow">return</span> image1;
<a name="l01751"></a>01751
<a name="l01752"></a>01752 <a class="codeRef" href="qimage.html">QImage</a> image3;
<a name="l01753"></a>01753
<a name="l01754"></a>01754 image3 = <a class="code" href="classKImageEffect.html#abed1d6be036886e9137ba218c548da78" title="Create an unbalanced gradient.">KImageEffect::unbalancedGradient</a>(image1.<a class="codeRef" href="qimage.html#size">size</a>(),
<a name="l01755"></a>01755 <a class="codeRef" href="qcolor.html">QColor</a>(0,0,0), <a class="codeRef" href="qcolor.html">QColor</a>(255,255,255),
<a name="l01756"></a>01756 gt, xf, yf, 0);
<a name="l01757"></a>01757
<a name="l01758"></a>01758 <span class="keywordflow">return</span> <a class="code" href="classKImageEffect.html#aeb41c4a7748892c4a58537876d2b4a43" title="Blends a color into the destination image, using an opacity value for blending one into another...">blend</a>(image1,image2,image3, <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8deaa8428ae9bb4f10835798177d7ae8ff2c1" title="Red channel.">Red</a>); <span class="comment">// Channel to use is arbitrary</span>
<a name="l01759"></a>01759 }
<a name="l01760"></a>01760
<a name="l01761"></a>01761 <span class="comment">// Blend image2 into image1, using an RBG channel of blendImage</span>
<a name="l01762"></a>01762 <span class="comment">//</span>
<a name="l01763"></a><a class="code" href="classKImageEffect.html#a781f82c71e891a86719304febb00bcd7">01763</a> <a class="codeRef" href="qimage.html">QImage</a>& <a class="code" href="classKImageEffect.html#aeb41c4a7748892c4a58537876d2b4a43" title="Blends a color into the destination image, using an opacity value for blending one into another...">KImageEffect::blend</a>(<a class="codeRef" href="qimage.html">QImage</a> &image1, <a class="codeRef" href="qimage.html">QImage</a> &image2,
<a name="l01764"></a>01764 <a class="codeRef" href="qimage.html">QImage</a> &blendImage, <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8dea" title="This enum provides a RGB channel specification.">RGBComponent</a> channel)
<a name="l01765"></a>01765 {
<a name="l01766"></a>01766 <span class="keywordflow">if</span> (image1.<a class="codeRef" href="qimage.html#width">width</a>() == 0 || image1.<a class="codeRef" href="qimage.html#height">height</a>() == 0 ||
<a name="l01767"></a>01767 image2.<a class="codeRef" href="qimage.html#width">width</a>() == 0 || image2.<a class="codeRef" href="qimage.html#height">height</a>() == 0 ||
<a name="l01768"></a>01768 blendImage.<a class="codeRef" href="qimage.html#width">width</a>() == 0 || blendImage.<a class="codeRef" href="qimage.html#height">height</a>() == 0) {
<a name="l01769"></a>01769 <span class="preprocessor">#ifndef NDEBUG</span>
<a name="l01770"></a>01770 <span class="preprocessor"></span> std::cerr << <span class="stringliteral">"KImageEffect::blend effect invalid image"</span> << <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/group__kdebug.html#ga313d520ed8f8f6b46eeef22cfb3b082a">std::endl</a>;
<a name="l01771"></a>01771 <span class="preprocessor">#endif</span>
<a name="l01772"></a>01772 <span class="preprocessor"></span> <span class="keywordflow">return</span> image1;
<a name="l01773"></a>01773 }
<a name="l01774"></a>01774
<a name="l01775"></a>01775 <span class="keywordtype">int</span> r, g, b;
<a name="l01776"></a>01776 <span class="keywordtype">int</span> ind1, ind2, ind3;
<a name="l01777"></a>01777
<a name="l01778"></a>01778 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> x1, x2, x3, y1, y2, y3;
<a name="l01779"></a>01779 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> a;
<a name="l01780"></a>01780
<a name="l01781"></a>01781 <span class="keyword">register</span> <span class="keywordtype">int</span> x, y;
<a name="l01782"></a>01782
<a name="l01783"></a>01783 <span class="comment">// for image1 and image2, we only handle depth 32</span>
<a name="l01784"></a>01784 <span class="keywordflow">if</span> (image1.<a class="codeRef" href="qimage.html#depth">depth</a>()<32) image1 = image1.<a class="codeRef" href="qimage.html#convertDepth">convertDepth</a>(32);
<a name="l01785"></a>01785 <span class="keywordflow">if</span> (image2.<a class="codeRef" href="qimage.html#depth">depth</a>()<32) image2 = image2.<a class="codeRef" href="qimage.html#convertDepth">convertDepth</a>(32);
<a name="l01786"></a>01786
<a name="l01787"></a>01787 <span class="comment">// for blendImage, we handle depth 8 and 32</span>
<a name="l01788"></a>01788 <span class="keywordflow">if</span> (blendImage.<a class="codeRef" href="qimage.html#depth">depth</a>()<8) blendImage = blendImage.<a class="codeRef" href="qimage.html#convertDepth">convertDepth</a>(8);
<a name="l01789"></a>01789
<a name="l01790"></a>01790 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *colorTable3 = (blendImage.<a class="codeRef" href="qimage.html#depth">depth</a>()==8) ?
<a name="l01791"></a>01791 blendImage.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>():0;
<a name="l01792"></a>01792
<a name="l01793"></a>01793 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *data1 = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image1.<a class="codeRef" href="qimage.html#bits">bits</a>();
<a name="l01794"></a>01794 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *data2 = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image2.<a class="codeRef" href="qimage.html#bits">bits</a>();
<a name="l01795"></a>01795 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *data3 = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)blendImage.<a class="codeRef" href="qimage.html#bits">bits</a>();
<a name="l01796"></a>01796 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *data3b = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)blendImage.<a class="codeRef" href="qimage.html#bits">bits</a>();
<a name="l01797"></a>01797 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> color3;
<a name="l01798"></a>01798
<a name="l01799"></a>01799 x1 = image1.<a class="codeRef" href="qimage.html#width">width</a>(); y1 = image1.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l01800"></a>01800 x2 = image2.<a class="codeRef" href="qimage.html#width">width</a>(); y2 = image2.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l01801"></a>01801 x3 = blendImage.<a class="codeRef" href="qimage.html#width">width</a>(); y3 = blendImage.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l01802"></a>01802
<a name="l01803"></a>01803 <span class="keywordflow">for</span> (y = 0; y < (int)y1; y++) {
<a name="l01804"></a>01804 ind1 = x1*y;
<a name="l01805"></a>01805 ind2 = x2*(y%y2);
<a name="l01806"></a>01806 ind3 = x3*(y%y3);
<a name="l01807"></a>01807
<a name="l01808"></a>01808 x=0;
<a name="l01809"></a>01809 <span class="keywordflow">while</span>(x < (<span class="keywordtype">int</span>)x1) {
<a name="l01810"></a>01810 color3 = (colorTable3) ? colorTable3[data3b[ind3]] : data3[ind3];
<a name="l01811"></a>01811
<a name="l01812"></a>01812 a = (channel == <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8deaa8428ae9bb4f10835798177d7ae8ff2c1" title="Red channel.">Red</a>) ? qRed(color3) :
<a name="l01813"></a>01813 (channel == <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8deaa5d121e962178e026143bde406e3718c4" title="Green channel.">Green</a>) ? qGreen(color3) :
<a name="l01814"></a>01814 (channel == <a class="code" href="classKImageEffect.html#ade122b4821923df992d902d844ee8deaa897b41db8f45ae9e097e15d72c599444" title="Blue channel.">Blue</a>) ? qBlue(color3) : qGray(color3);
<a name="l01815"></a>01815
<a name="l01816"></a>01816 r = (a*qRed(data1[ind1]) + (256-a)*qRed(data2[ind2]))/256;
<a name="l01817"></a>01817 g = (a*qGreen(data1[ind1]) + (256-a)*qGreen(data2[ind2]))/256;
<a name="l01818"></a>01818 b = (a*qBlue(data1[ind1]) + (256-a)*qBlue(data2[ind2]))/256;
<a name="l01819"></a>01819
<a name="l01820"></a>01820 a = qAlpha(data1[ind1]);
<a name="l01821"></a>01821 data1[ind1] = qRgba(r, g, b, a);
<a name="l01822"></a>01822
<a name="l01823"></a>01823 ind1++; ind2++; ind3++; x++;
<a name="l01824"></a>01824 <span class="keywordflow">if</span> ( (x%x2) ==0) ind2 -= x2;
<a name="l01825"></a>01825 <span class="keywordflow">if</span> ( (x%x3) ==0) ind3 -= x3;
<a name="l01826"></a>01826 }
<a name="l01827"></a>01827 }
<a name="l01828"></a>01828 <span class="keywordflow">return</span> image1;
<a name="l01829"></a>01829 }
<a name="l01830"></a>01830
<a name="l01831"></a>01831
<a name="l01832"></a>01832 <span class="comment">//======================================================================</span>
<a name="l01833"></a>01833 <span class="comment">//</span>
<a name="l01834"></a>01834 <span class="comment">// Hash effects</span>
<a name="l01835"></a>01835 <span class="comment">//</span>
<a name="l01836"></a>01836 <span class="comment">//======================================================================</span>
<a name="l01837"></a>01837
<a name="l01838"></a>01838 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> KImageEffect::lHash(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> c)
<a name="l01839"></a>01839 {
<a name="l01840"></a>01840 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> r = qRed(c), g = qGreen(c), b = qBlue(c), a = qAlpha(c);
<a name="l01841"></a>01841 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> nr, ng, nb;
<a name="l01842"></a>01842 nr =(r >> 1) + (r >> 2); nr = nr > r ? 0 : nr;
<a name="l01843"></a>01843 ng =(g >> 1) + (g >> 2); ng = ng > g ? 0 : ng;
<a name="l01844"></a>01844 nb =(b >> 1) + (b >> 2); nb = nb > b ? 0 : nb;
<a name="l01845"></a>01845
<a name="l01846"></a>01846 <span class="keywordflow">return</span> qRgba(nr, ng, nb, a);
<a name="l01847"></a>01847 }
<a name="l01848"></a>01848
<a name="l01849"></a>01849
<a name="l01850"></a>01850 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l01851"></a>01851
<a name="l01852"></a>01852 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> KImageEffect::uHash(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> c)
<a name="l01853"></a>01853 {
<a name="l01854"></a>01854 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> r = qRed(c), g = qGreen(c), b = qBlue(c), a = qAlpha(c);
<a name="l01855"></a>01855 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> nr, ng, nb;
<a name="l01856"></a>01856 nr = r + (r >> 3); nr = nr < r ? ~0 : nr;
<a name="l01857"></a>01857 ng = g + (g >> 3); ng = ng < g ? ~0 : ng;
<a name="l01858"></a>01858 nb = b + (b >> 3); nb = nb < b ? ~0 : nb;
<a name="l01859"></a>01859
<a name="l01860"></a>01860 <span class="keywordflow">return</span> qRgba(nr, ng, nb, a);
<a name="l01861"></a>01861 }
<a name="l01862"></a>01862
<a name="l01863"></a>01863
<a name="l01864"></a>01864 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l01865"></a>01865
<a name="l01866"></a><a class="code" href="classKImageEffect.html#a2ebe8ef668d8f36230ba4d0e2d772b63">01866</a> <a class="codeRef" href="qimage.html">QImage</a>& <a class="code" href="classKImageEffect.html#a2ebe8ef668d8f36230ba4d0e2d772b63" title="Build a hash on any given QImage.">KImageEffect::hash</a>(<a class="codeRef" href="qimage.html">QImage</a> &image, <a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006df" title="This enum provides a lighting direction specification.">Lighting</a> lite, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> spacing)
<a name="l01867"></a>01867 {
<a name="l01868"></a>01868 <span class="keywordflow">if</span> (image.<a class="codeRef" href="qimage.html#width">width</a>() == 0 || image.<a class="codeRef" href="qimage.html#height">height</a>() == 0) {
<a name="l01869"></a>01869 <span class="preprocessor">#ifndef NDEBUG</span>
<a name="l01870"></a>01870 <span class="preprocessor"></span> std::cerr << <span class="stringliteral">"KImageEffect::hash effect invalid image"</span> << <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/group__kdebug.html#ga313d520ed8f8f6b46eeef22cfb3b082a">std::endl</a>;
<a name="l01871"></a>01871 <span class="preprocessor">#endif</span>
<a name="l01872"></a>01872 <span class="preprocessor"></span> <span class="keywordflow">return</span> image;
<a name="l01873"></a>01873 }
<a name="l01874"></a>01874
<a name="l01875"></a>01875 <span class="keyword">register</span> <span class="keywordtype">int</span> x, y;
<a name="l01876"></a>01876 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *data = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image.<a class="codeRef" href="qimage.html#bits">bits</a>();
<a name="l01877"></a>01877 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> ind;
<a name="l01878"></a>01878
<a name="l01879"></a>01879 <span class="comment">//CT no need to do it if not enough space</span>
<a name="l01880"></a>01880 <span class="keywordflow">if</span> ((lite == <a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfa0834e3b576490f7e3a254904cf879f05" title="Lighting from the top of the image.">NorthLite</a> ||
<a name="l01881"></a>01881 lite == <a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfadbab663d6a79fa10dfc7539ce329d12d" title="Lighting from the bottom of the image.">SouthLite</a>)&&
<a name="l01882"></a>01882 (<span class="keywordtype">unsigned</span>)image.<a class="codeRef" href="qimage.html#height">height</a>() < 2+spacing) <span class="keywordflow">return</span> image;
<a name="l01883"></a>01883 <span class="keywordflow">if</span> ((lite == <a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfa6786dcd9d11eda568888935ebe69f825" title="Lighting from the right of the image.">EastLite</a> ||
<a name="l01884"></a>01884 lite == <a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfa8ab4ad0b239eb38c4acf51be6e918361" title="Lighting from the left of the image.">WestLite</a>)&&
<a name="l01885"></a>01885 (unsigned)image.<a class="codeRef" href="qimage.html#height">height</a>() < 2+spacing) <span class="keywordflow">return</span> image;
<a name="l01886"></a>01886
<a name="l01887"></a>01887 <span class="keywordflow">if</span> (lite == <a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfa0834e3b576490f7e3a254904cf879f05" title="Lighting from the top of the image.">NorthLite</a> || lite == <a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfadbab663d6a79fa10dfc7539ce329d12d" title="Lighting from the bottom of the image.">SouthLite</a>) {
<a name="l01888"></a>01888 <span class="keywordflow">for</span> (y = 0 ; y < image.<a class="codeRef" href="qimage.html#height">height</a>(); y = y + 2 + spacing) {
<a name="l01889"></a>01889 <span class="keywordflow">for</span> (x = 0; x < image.<a class="codeRef" href="qimage.html#width">width</a>(); x++) {
<a name="l01890"></a>01890 ind = x + image.<a class="codeRef" href="qimage.html#width">width</a>() * y;
<a name="l01891"></a>01891 data[ind] = lite==<a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfa0834e3b576490f7e3a254904cf879f05" title="Lighting from the top of the image.">NorthLite</a>?uHash(data[ind]):lHash(data[ind]);
<a name="l01892"></a>01892
<a name="l01893"></a>01893 ind = ind + image.<a class="codeRef" href="qimage.html#width">width</a>();
<a name="l01894"></a>01894 data[ind] = lite==<a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfa0834e3b576490f7e3a254904cf879f05" title="Lighting from the top of the image.">NorthLite</a>?lHash(data[ind]):uHash(data[ind]);
<a name="l01895"></a>01895 }
<a name="l01896"></a>01896 }
<a name="l01897"></a>01897 }
<a name="l01898"></a>01898
<a name="l01899"></a>01899 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (lite == <a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfa6786dcd9d11eda568888935ebe69f825" title="Lighting from the right of the image.">EastLite</a> || lite == <a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfa8ab4ad0b239eb38c4acf51be6e918361" title="Lighting from the left of the image.">WestLite</a>) {
<a name="l01900"></a>01900 <span class="keywordflow">for</span> (y = 0 ; y < image.<a class="codeRef" href="qimage.html#height">height</a>(); y++) {
<a name="l01901"></a>01901 <span class="keywordflow">for</span> (x = 0; x < image.<a class="codeRef" href="qimage.html#width">width</a>(); x = x + 2 + spacing) {
<a name="l01902"></a>01902 ind = x + image.<a class="codeRef" href="qimage.html#width">width</a>() * y;
<a name="l01903"></a>01903 data[ind] = lite==<a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfa6786dcd9d11eda568888935ebe69f825" title="Lighting from the right of the image.">EastLite</a>?uHash(data[ind]):lHash(data[ind]);
<a name="l01904"></a>01904
<a name="l01905"></a>01905 ind++;
<a name="l01906"></a>01906 data[ind] = lite==<a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfa6786dcd9d11eda568888935ebe69f825" title="Lighting from the right of the image.">EastLite</a>?lHash(data[ind]):uHash(data[ind]);
<a name="l01907"></a>01907 }
<a name="l01908"></a>01908 }
<a name="l01909"></a>01909 }
<a name="l01910"></a>01910
<a name="l01911"></a>01911 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (lite == <a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfa190e99095e856aad1642f7679e6d02e2" title="Lighting from the top left of the image.">NWLite</a> || lite == <a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfa88f28150998f3bde68a614db1d756e2c" title="Lighting from the bottom right of the image.">SELite</a>) {
<a name="l01912"></a>01912 <span class="keywordflow">for</span> (y = 0 ; y < image.<a class="codeRef" href="qimage.html#height">height</a>(); y++) {
<a name="l01913"></a>01913 <span class="keywordflow">for</span> (x = 0;
<a name="l01914"></a>01914 x < (int)(image.<a class="codeRef" href="qimage.html#width">width</a>() - ((y & 1)? 1 : 0) * spacing);
<a name="l01915"></a>01915 x = x + 2 + spacing) {
<a name="l01916"></a>01916 ind = x + image.<a class="codeRef" href="qimage.html#width">width</a>() * y + ((y & 1)? 1 : 0);
<a name="l01917"></a>01917 data[ind] = lite==<a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfa190e99095e856aad1642f7679e6d02e2" title="Lighting from the top left of the image.">NWLite</a>?uHash(data[ind]):lHash(data[ind]);
<a name="l01918"></a>01918
<a name="l01919"></a>01919 ind++;
<a name="l01920"></a>01920 data[ind] = lite==<a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfa190e99095e856aad1642f7679e6d02e2" title="Lighting from the top left of the image.">NWLite</a>?lHash(data[ind]):uHash(data[ind]);
<a name="l01921"></a>01921 }
<a name="l01922"></a>01922 }
<a name="l01923"></a>01923 }
<a name="l01924"></a>01924
<a name="l01925"></a>01925 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (lite == <a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfa098c89a13b4bb463bb1d870c24c81e8d" title="Lighting from the bottom left of the image.">SWLite</a> || lite == <a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfa00a1b71a698dcac73aa99d2afb8bb526" title="Lighting from the top right of the image.">NELite</a>) {
<a name="l01926"></a>01926 <span class="keywordflow">for</span> (y = 0 ; y < image.<a class="codeRef" href="qimage.html#height">height</a>(); y++) {
<a name="l01927"></a>01927 <span class="keywordflow">for</span> (x = 0 + ((y & 1)? 1 : 0); x < image.<a class="codeRef" href="qimage.html#width">width</a>(); x = x + 2 + spacing) {
<a name="l01928"></a>01928 ind = x + image.<a class="codeRef" href="qimage.html#width">width</a>() * y - ((y & 1)? 1 : 0);
<a name="l01929"></a>01929 data[ind] = lite==<a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfa098c89a13b4bb463bb1d870c24c81e8d" title="Lighting from the bottom left of the image.">SWLite</a>?uHash(data[ind]):lHash(data[ind]);
<a name="l01930"></a>01930
<a name="l01931"></a>01931 ind++;
<a name="l01932"></a>01932 data[ind] = lite==<a class="code" href="classKImageEffect.html#a96a70f4bb4cbd2dcb602337f045006dfa098c89a13b4bb463bb1d870c24c81e8d" title="Lighting from the bottom left of the image.">SWLite</a>?lHash(data[ind]):uHash(data[ind]);
<a name="l01933"></a>01933 }
<a name="l01934"></a>01934 }
<a name="l01935"></a>01935 }
<a name="l01936"></a>01936
<a name="l01937"></a>01937 <span class="keywordflow">return</span> image;
<a name="l01938"></a>01938 }
<a name="l01939"></a>01939
<a name="l01940"></a>01940
<a name="l01941"></a>01941 <span class="comment">//======================================================================</span>
<a name="l01942"></a>01942 <span class="comment">//</span>
<a name="l01943"></a>01943 <span class="comment">// Flatten effects</span>
<a name="l01944"></a>01944 <span class="comment">//</span>
<a name="l01945"></a>01945 <span class="comment">//======================================================================</span>
<a name="l01946"></a>01946
<a name="l01947"></a><a class="code" href="classKImageEffect.html#ac2bbfe57bc4ee28aec88ce75bb49327d">01947</a> <a class="codeRef" href="qimage.html">QImage</a>& <a class="code" href="classKImageEffect.html#ac2bbfe57bc4ee28aec88ce75bb49327d" title="This recolors a pixmap.">KImageEffect::flatten</a>(<a class="codeRef" href="qimage.html">QImage</a> &img, <span class="keyword">const</span> <a class="codeRef" href="qcolor.html">QColor</a> &ca,
<a name="l01948"></a>01948 <span class="keyword">const</span> <a class="codeRef" href="qcolor.html">QColor</a> &cb, <span class="keywordtype">int</span> ncols)
<a name="l01949"></a>01949 {
<a name="l01950"></a>01950 <span class="keywordflow">if</span> (img.<a class="codeRef" href="qimage.html#width">width</a>() == 0 || img.<a class="codeRef" href="qimage.html#height">height</a>() == 0)
<a name="l01951"></a>01951 <span class="keywordflow">return</span> img;
<a name="l01952"></a>01952
<a name="l01953"></a>01953 <span class="comment">// a bitmap is easy...</span>
<a name="l01954"></a>01954 <span class="keywordflow">if</span> (img.<a class="codeRef" href="qimage.html#depth">depth</a>() == 1) {
<a name="l01955"></a>01955 img.<a class="codeRef" href="qimage.html#setColor">setColor</a>(0, ca.<a class="codeRef" href="qcolor.html#rgb">rgb</a>());
<a name="l01956"></a>01956 img.<a class="codeRef" href="qimage.html#setColor">setColor</a>(1, cb.<a class="codeRef" href="qcolor.html#rgb">rgb</a>());
<a name="l01957"></a>01957 <span class="keywordflow">return</span> img;
<a name="l01958"></a>01958 }
<a name="l01959"></a>01959
<a name="l01960"></a>01960 <span class="keywordtype">int</span> r1 = ca.<a class="codeRef" href="qcolor.html#red">red</a>(); <span class="keywordtype">int</span> r2 = cb.<a class="codeRef" href="qcolor.html#red">red</a>();
<a name="l01961"></a>01961 <span class="keywordtype">int</span> g1 = ca.<a class="codeRef" href="qcolor.html#green">green</a>(); <span class="keywordtype">int</span> g2 = cb.<a class="codeRef" href="qcolor.html#green">green</a>();
<a name="l01962"></a>01962 <span class="keywordtype">int</span> b1 = ca.<a class="codeRef" href="qcolor.html#blue">blue</a>(); <span class="keywordtype">int</span> b2 = cb.<a class="codeRef" href="qcolor.html#blue">blue</a>();
<a name="l01963"></a>01963 <span class="keywordtype">int</span> min = 0, max = 255;
<a name="l01964"></a>01964
<a name="l01965"></a>01965 QRgb col;
<a name="l01966"></a>01966
<a name="l01967"></a>01967 <span class="comment">// Get minimum and maximum greylevel.</span>
<a name="l01968"></a>01968 <span class="keywordflow">if</span> (img.<a class="codeRef" href="qimage.html#numColors">numColors</a>()) {
<a name="l01969"></a>01969 <span class="comment">// pseudocolor</span>
<a name="l01970"></a>01970 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < img.<a class="codeRef" href="qimage.html#numColors">numColors</a>(); i++) {
<a name="l01971"></a>01971 col = img.<a class="codeRef" href="qimage.html#color">color</a>(i);
<a name="l01972"></a>01972 <span class="keywordtype">int</span> mean = (qRed(col) + qGreen(col) + qBlue(col)) / 3;
<a name="l01973"></a>01973 min = QMIN(min, mean);
<a name="l01974"></a>01974 max = QMAX(max, mean);
<a name="l01975"></a>01975 }
<a name="l01976"></a>01976 } <span class="keywordflow">else</span> {
<a name="l01977"></a>01977 <span class="comment">// truecolor</span>
<a name="l01978"></a>01978 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> y=0; y < img.<a class="codeRef" href="qimage.html#height">height</a>(); y++)
<a name="l01979"></a>01979 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> x=0; x < img.<a class="codeRef" href="qimage.html#width">width</a>(); x++) {
<a name="l01980"></a>01980 col = img.<a class="codeRef" href="qimage.html#pixel">pixel</a>(x, y);
<a name="l01981"></a>01981 <span class="keywordtype">int</span> mean = (qRed(col) + qGreen(col) + qBlue(col)) / 3;
<a name="l01982"></a>01982 min = QMIN(min, mean);
<a name="l01983"></a>01983 max = QMAX(max, mean);
<a name="l01984"></a>01984 }
<a name="l01985"></a>01985 }
<a name="l01986"></a>01986
<a name="l01987"></a>01987 <span class="comment">// Conversion factors</span>
<a name="l01988"></a>01988 <span class="keywordtype">float</span> sr = ((float) r2 - r1) / (max - min);
<a name="l01989"></a>01989 <span class="keywordtype">float</span> sg = ((float) g2 - g1) / (max - min);
<a name="l01990"></a>01990 <span class="keywordtype">float</span> sb = ((float) b2 - b1) / (max - min);
<a name="l01991"></a>01991
<a name="l01992"></a>01992
<a name="l01993"></a>01993 <span class="comment">// Repaint the image</span>
<a name="l01994"></a>01994 <span class="keywordflow">if</span> (img.<a class="codeRef" href="qimage.html#numColors">numColors</a>()) {
<a name="l01995"></a>01995 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i < img.<a class="codeRef" href="qimage.html#numColors">numColors</a>(); i++) {
<a name="l01996"></a>01996 col = img.<a class="codeRef" href="qimage.html#color">color</a>(i);
<a name="l01997"></a>01997 <span class="keywordtype">int</span> mean = (qRed(col) + qGreen(col) + qBlue(col)) / 3;
<a name="l01998"></a>01998 <span class="keywordtype">int</span> r = (int) (sr * (mean - min) + r1 + 0.5);
<a name="l01999"></a>01999 <span class="keywordtype">int</span> g = (int) (sg * (mean - min) + g1 + 0.5);
<a name="l02000"></a>02000 <span class="keywordtype">int</span> b = (int) (sb * (mean - min) + b1 + 0.5);
<a name="l02001"></a>02001 img.<a class="codeRef" href="qimage.html#setColor">setColor</a>(i, qRgba(r, g, b, qAlpha(col)));
<a name="l02002"></a>02002 }
<a name="l02003"></a>02003 } <span class="keywordflow">else</span> {
<a name="l02004"></a>02004 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> y=0; y < img.<a class="codeRef" href="qimage.html#height">height</a>(); y++)
<a name="l02005"></a>02005 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> x=0; x < img.<a class="codeRef" href="qimage.html#width">width</a>(); x++) {
<a name="l02006"></a>02006 col = img.<a class="codeRef" href="qimage.html#pixel">pixel</a>(x, y);
<a name="l02007"></a>02007 <span class="keywordtype">int</span> mean = (qRed(col) + qGreen(col) + qBlue(col)) / 3;
<a name="l02008"></a>02008 <span class="keywordtype">int</span> r = (int) (sr * (mean - min) + r1 + 0.5);
<a name="l02009"></a>02009 <span class="keywordtype">int</span> g = (int) (sg * (mean - min) + g1 + 0.5);
<a name="l02010"></a>02010 <span class="keywordtype">int</span> b = (int) (sb * (mean - min) + b1 + 0.5);
<a name="l02011"></a>02011 img.<a class="codeRef" href="qimage.html#setPixel">setPixel</a>(x, y, qRgba(r, g, b, qAlpha(col)));
<a name="l02012"></a>02012 }
<a name="l02013"></a>02013 }
<a name="l02014"></a>02014
<a name="l02015"></a>02015
<a name="l02016"></a>02016 <span class="comment">// Dither if necessary</span>
<a name="l02017"></a>02017 <span class="keywordflow">if</span> ( (ncols <= 0) || ((img.<a class="codeRef" href="qimage.html#numColors">numColors</a>() != 0) && (img.<a class="codeRef" href="qimage.html#numColors">numColors</a>() <= ncols)))
<a name="l02018"></a>02018 <span class="keywordflow">return</span> img;
<a name="l02019"></a>02019
<a name="l02020"></a>02020 <span class="keywordflow">if</span> (ncols == 1) ncols++;
<a name="l02021"></a>02021 <span class="keywordflow">if</span> (ncols > 256) ncols = 256;
<a name="l02022"></a>02022
<a name="l02023"></a>02023 <a class="codeRef" href="qcolor.html">QColor</a> *pal = <span class="keyword">new</span> <a class="codeRef" href="qcolor.html">QColor</a>[ncols];
<a name="l02024"></a>02024 sr = ((float) r2 - r1) / (ncols - 1);
<a name="l02025"></a>02025 sg = ((float) g2 - g1) / (ncols - 1);
<a name="l02026"></a>02026 sb = ((float) b2 - b1) / (ncols - 1);
<a name="l02027"></a>02027
<a name="l02028"></a>02028 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<ncols; i++)
<a name="l02029"></a>02029 pal[i] = <a class="codeRef" href="qcolor.html">QColor</a>(r1 + <span class="keywordtype">int</span>(sr*i), g1 + int(sg*i), b1 + int(sb*i));
<a name="l02030"></a>02030
<a name="l02031"></a>02031 <a class="code" href="classKImageEffect.html#aefbc2ab4ea203701a36016fcadb638af" title="Dither an image using Floyd-Steinberg dithering for low-color situations.">dither</a>(img, pal, ncols);
<a name="l02032"></a>02032
<a name="l02033"></a>02033 <span class="keyword">delete</span>[] pal;
<a name="l02034"></a>02034 <span class="keywordflow">return</span> img;
<a name="l02035"></a>02035 }
<a name="l02036"></a>02036
<a name="l02037"></a>02037
<a name="l02038"></a>02038 <span class="comment">//======================================================================</span>
<a name="l02039"></a>02039 <span class="comment">//</span>
<a name="l02040"></a>02040 <span class="comment">// Fade effects</span>
<a name="l02041"></a>02041 <span class="comment">//</span>
<a name="l02042"></a>02042 <span class="comment">//======================================================================</span>
<a name="l02043"></a>02043
<a name="l02044"></a><a class="code" href="classKImageEffect.html#a74dd14950a11bdca3e613a3e6036247c">02044</a> <a class="codeRef" href="qimage.html">QImage</a>& <a class="code" href="classKImageEffect.html#a74dd14950a11bdca3e613a3e6036247c" title="Fade an image to a certain background color.">KImageEffect::fade</a>(<a class="codeRef" href="qimage.html">QImage</a> &img, <span class="keywordtype">float</span> val, <span class="keyword">const</span> <a class="codeRef" href="qcolor.html">QColor</a> &color)
<a name="l02045"></a>02045 {
<a name="l02046"></a>02046 <span class="keywordflow">if</span> (img.<a class="codeRef" href="qimage.html#width">width</a>() == 0 || img.<a class="codeRef" href="qimage.html#height">height</a>() == 0)
<a name="l02047"></a>02047 <span class="keywordflow">return</span> img;
<a name="l02048"></a>02048
<a name="l02049"></a>02049 <span class="comment">// We don't handle bitmaps</span>
<a name="l02050"></a>02050 <span class="keywordflow">if</span> (img.<a class="codeRef" href="qimage.html#depth">depth</a>() == 1)
<a name="l02051"></a>02051 <span class="keywordflow">return</span> img;
<a name="l02052"></a>02052
<a name="l02053"></a>02053 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> tbl[256];
<a name="l02054"></a>02054 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<256; i++)
<a name="l02055"></a>02055 tbl[i] = (<span class="keywordtype">int</span>) (val * i + 0.5);
<a name="l02056"></a>02056
<a name="l02057"></a>02057 <span class="keywordtype">int</span> red = color.<a class="codeRef" href="qcolor.html#red">red</a>();
<a name="l02058"></a>02058 <span class="keywordtype">int</span> green = color.<a class="codeRef" href="qcolor.html#green">green</a>();
<a name="l02059"></a>02059 <span class="keywordtype">int</span> blue = color.<a class="codeRef" href="qcolor.html#blue">blue</a>();
<a name="l02060"></a>02060
<a name="l02061"></a>02061 QRgb col;
<a name="l02062"></a>02062 <span class="keywordtype">int</span> r, g, b, cr, cg, cb;
<a name="l02063"></a>02063
<a name="l02064"></a>02064 <span class="keywordflow">if</span> (img.<a class="codeRef" href="qimage.html#depth">depth</a>() <= 8) {
<a name="l02065"></a>02065 <span class="comment">// pseudo color</span>
<a name="l02066"></a>02066 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<img.<a class="codeRef" href="qimage.html#numColors">numColors</a>(); i++) {
<a name="l02067"></a>02067 col = img.<a class="codeRef" href="qimage.html#color">color</a>(i);
<a name="l02068"></a>02068 cr = qRed(col); cg = qGreen(col); cb = qBlue(col);
<a name="l02069"></a>02069 <span class="keywordflow">if</span> (cr > red)
<a name="l02070"></a>02070 r = cr - tbl[cr - red];
<a name="l02071"></a>02071 <span class="keywordflow">else</span>
<a name="l02072"></a>02072 r = cr + tbl[red - cr];
<a name="l02073"></a>02073 <span class="keywordflow">if</span> (cg > green)
<a name="l02074"></a>02074 g = cg - tbl[cg - green];
<a name="l02075"></a>02075 <span class="keywordflow">else</span>
<a name="l02076"></a>02076 g = cg + tbl[green - cg];
<a name="l02077"></a>02077 <span class="keywordflow">if</span> (cb > blue)
<a name="l02078"></a>02078 b = cb - tbl[cb - blue];
<a name="l02079"></a>02079 <span class="keywordflow">else</span>
<a name="l02080"></a>02080 b = cb + tbl[blue - cb];
<a name="l02081"></a>02081 img.<a class="codeRef" href="qimage.html#setColor">setColor</a>(i, qRgba(r, g, b, qAlpha(col)));
<a name="l02082"></a>02082 }
<a name="l02083"></a>02083
<a name="l02084"></a>02084 } <span class="keywordflow">else</span> {
<a name="l02085"></a>02085 <span class="comment">// truecolor</span>
<a name="l02086"></a>02086 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> y=0; y<img.<a class="codeRef" href="qimage.html#height">height</a>(); y++) {
<a name="l02087"></a>02087 QRgb *data = (QRgb *) img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l02088"></a>02088 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> x=0; x<img.<a class="codeRef" href="qimage.html#width">width</a>(); x++) {
<a name="l02089"></a>02089 col = *data;
<a name="l02090"></a>02090 cr = qRed(col); cg = qGreen(col); cb = qBlue(col);
<a name="l02091"></a>02091 <span class="keywordflow">if</span> (cr > red)
<a name="l02092"></a>02092 r = cr - tbl[cr - red];
<a name="l02093"></a>02093 <span class="keywordflow">else</span>
<a name="l02094"></a>02094 r = cr + tbl[red - cr];
<a name="l02095"></a>02095 <span class="keywordflow">if</span> (cg > green)
<a name="l02096"></a>02096 g = cg - tbl[cg - green];
<a name="l02097"></a>02097 <span class="keywordflow">else</span>
<a name="l02098"></a>02098 g = cg + tbl[green - cg];
<a name="l02099"></a>02099 <span class="keywordflow">if</span> (cb > blue)
<a name="l02100"></a>02100 b = cb - tbl[cb - blue];
<a name="l02101"></a>02101 <span class="keywordflow">else</span>
<a name="l02102"></a>02102 b = cb + tbl[blue - cb];
<a name="l02103"></a>02103 *data++ = qRgba(r, g, b, qAlpha(col));
<a name="l02104"></a>02104 }
<a name="l02105"></a>02105 }
<a name="l02106"></a>02106 }
<a name="l02107"></a>02107
<a name="l02108"></a>02108 <span class="keywordflow">return</span> img;
<a name="l02109"></a>02109 }
<a name="l02110"></a>02110
<a name="l02111"></a>02111 <span class="comment">//======================================================================</span>
<a name="l02112"></a>02112 <span class="comment">//</span>
<a name="l02113"></a>02113 <span class="comment">// Color effects</span>
<a name="l02114"></a>02114 <span class="comment">//</span>
<a name="l02115"></a>02115 <span class="comment">//======================================================================</span>
<a name="l02116"></a>02116
<a name="l02117"></a>02117 <span class="comment">// This code is adapted from code (C) Rik Hemsley <rik@kde.org></span>
<a name="l02118"></a>02118 <span class="comment">//</span>
<a name="l02119"></a>02119 <span class="comment">// The formula used (r + b + g) /3 is different from the qGray formula</span>
<a name="l02120"></a>02120 <span class="comment">// used by Qt. This is because our formula is much much faster. If,</span>
<a name="l02121"></a>02121 <span class="comment">// however, it turns out that this is producing sub-optimal images,</span>
<a name="l02122"></a>02122 <span class="comment">// then it will have to change (kurt)</span>
<a name="l02123"></a>02123 <span class="comment">//</span>
<a name="l02124"></a>02124 <span class="comment">// It does produce lower quality grayscale ;-) Use fast == true for the fast</span>
<a name="l02125"></a>02125 <span class="comment">// algorithm, false for the higher quality one (mosfet).</span>
<a name="l02126"></a><a class="code" href="classKImageEffect.html#a84c6b5464eb3e5f23742386770dda0cb">02126</a> <a class="codeRef" href="qimage.html">QImage</a>& <a class="code" href="classKImageEffect.html#a84c6b5464eb3e5f23742386770dda0cb" title="Convert an image to grayscale.">KImageEffect::toGray</a>(<a class="codeRef" href="qimage.html">QImage</a> &img, <span class="keywordtype">bool</span> fast)
<a name="l02127"></a>02127 {
<a name="l02128"></a>02128 <span class="keywordflow">if</span> (img.<a class="codeRef" href="qimage.html#width">width</a>() == 0 || img.<a class="codeRef" href="qimage.html#height">height</a>() == 0)
<a name="l02129"></a>02129 <span class="keywordflow">return</span> img;
<a name="l02130"></a>02130
<a name="l02131"></a>02131 <span class="keywordflow">if</span>(fast){
<a name="l02132"></a>02132 <span class="keywordflow">if</span> (img.<a class="codeRef" href="qimage.html#depth">depth</a>() == 32) {
<a name="l02133"></a>02133 <span class="keyword">register</span> uchar * r(img.<a class="codeRef" href="qimage.html#bits">bits</a>());
<a name="l02134"></a>02134 <span class="keyword">register</span> uchar * g(img.<a class="codeRef" href="qimage.html#bits">bits</a>() + 1);
<a name="l02135"></a>02135 <span class="keyword">register</span> uchar * b(img.<a class="codeRef" href="qimage.html#bits">bits</a>() + 2);
<a name="l02136"></a>02136
<a name="l02137"></a>02137 uchar * end(img.<a class="codeRef" href="qimage.html#bits">bits</a>() + img.<a class="codeRef" href="qimage.html#numBytes">numBytes</a>());
<a name="l02138"></a>02138
<a name="l02139"></a>02139 <span class="keywordflow">while</span> (r != end) {
<a name="l02140"></a>02140
<a name="l02141"></a>02141 *r = *g = *b = (((*r + *g) >> 1) + *b) >> 1; <span class="comment">// (r + b + g) / 3</span>
<a name="l02142"></a>02142
<a name="l02143"></a>02143 r += 4;
<a name="l02144"></a>02144 g += 4;
<a name="l02145"></a>02145 b += 4;
<a name="l02146"></a>02146 }
<a name="l02147"></a>02147 }
<a name="l02148"></a>02148 <span class="keywordflow">else</span>
<a name="l02149"></a>02149 {
<a name="l02150"></a>02150 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < img.<a class="codeRef" href="qimage.html#numColors">numColors</a>(); i++)
<a name="l02151"></a>02151 {
<a name="l02152"></a>02152 <span class="keyword">register</span> uint r = qRed(img.<a class="codeRef" href="qimage.html#color">color</a>(i));
<a name="l02153"></a>02153 <span class="keyword">register</span> uint g = qGreen(img.<a class="codeRef" href="qimage.html#color">color</a>(i));
<a name="l02154"></a>02154 <span class="keyword">register</span> uint b = qBlue(img.<a class="codeRef" href="qimage.html#color">color</a>(i));
<a name="l02155"></a>02155
<a name="l02156"></a>02156 <span class="keyword">register</span> uint gray = (((r + g) >> 1) + b) >> 1;
<a name="l02157"></a>02157 img.<a class="codeRef" href="qimage.html#setColor">setColor</a>(i, qRgba(gray, gray, gray, qAlpha(img.<a class="codeRef" href="qimage.html#color">color</a>(i))));
<a name="l02158"></a>02158 }
<a name="l02159"></a>02159 }
<a name="l02160"></a>02160 }
<a name="l02161"></a>02161 <span class="keywordflow">else</span>{
<a name="l02162"></a>02162 <span class="keywordtype">int</span> pixels = img.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8 ? img.<a class="codeRef" href="qimage.html#width">width</a>()*img.<a class="codeRef" href="qimage.html#height">height</a>() :
<a name="l02163"></a>02163 img.<a class="codeRef" href="qimage.html#numColors">numColors</a>();
<a name="l02164"></a>02164 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *data = img.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8 ? (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)img.<a class="codeRef" href="qimage.html#bits">bits</a>() :
<a name="l02165"></a>02165 (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)img.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l02166"></a>02166 <span class="keywordtype">int</span> val, i;
<a name="l02167"></a>02167 <span class="keywordflow">for</span>(i=0; i < pixels; ++i){
<a name="l02168"></a>02168 val = qGray(data[i]);
<a name="l02169"></a>02169 data[i] = qRgba(val, val, val, qAlpha(data[i]));
<a name="l02170"></a>02170 }
<a name="l02171"></a>02171 }
<a name="l02172"></a>02172 <span class="keywordflow">return</span> img;
<a name="l02173"></a>02173 }
<a name="l02174"></a>02174
<a name="l02175"></a>02175 <span class="comment">// CT 29Jan2000 - desaturation algorithms</span>
<a name="l02176"></a><a class="code" href="classKImageEffect.html#ac9a52a0765dfe83327b51d80c292c3b7">02176</a> <a class="codeRef" href="qimage.html">QImage</a>& <a class="code" href="classKImageEffect.html#ac9a52a0765dfe83327b51d80c292c3b7" title="Desaturate an image evenly.">KImageEffect::desaturate</a>(<a class="codeRef" href="qimage.html">QImage</a> &img, <span class="keywordtype">float</span> desat)
<a name="l02177"></a>02177 {
<a name="l02178"></a>02178 <span class="keywordflow">if</span> (img.<a class="codeRef" href="qimage.html#width">width</a>() == 0 || img.<a class="codeRef" href="qimage.html#height">height</a>() == 0)
<a name="l02179"></a>02179 <span class="keywordflow">return</span> img;
<a name="l02180"></a>02180
<a name="l02181"></a>02181 <span class="keywordflow">if</span> (desat < 0) desat = 0.;
<a name="l02182"></a>02182 <span class="keywordflow">if</span> (desat > 1) desat = 1.;
<a name="l02183"></a>02183 <span class="keywordtype">int</span> pixels = img.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8 ? img.<a class="codeRef" href="qimage.html#width">width</a>()*img.<a class="codeRef" href="qimage.html#height">height</a>() :
<a name="l02184"></a>02184 img.<a class="codeRef" href="qimage.html#numColors">numColors</a>();
<a name="l02185"></a>02185 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *data = img.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8 ? (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)img.<a class="codeRef" href="qimage.html#bits">bits</a>() :
<a name="l02186"></a>02186 (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)img.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l02187"></a>02187 <span class="keywordtype">int</span> h, s, v, i;
<a name="l02188"></a>02188 <a class="codeRef" href="qcolor.html">QColor</a> clr; <span class="comment">// keep constructor out of loop (mosfet)</span>
<a name="l02189"></a>02189 <span class="keywordflow">for</span>(i=0; i < pixels; ++i){
<a name="l02190"></a>02190 clr.<a class="codeRef" href="qcolor.html#setRgb">setRgb</a>(data[i]);
<a name="l02191"></a>02191 clr.<a class="codeRef" href="qcolor.html#hsv">hsv</a>(&h, &s, &v);
<a name="l02192"></a>02192 clr.<a class="codeRef" href="qcolor.html#setHsv">setHsv</a>(h, (<span class="keywordtype">int</span>)(s * (1. - desat)), v);
<a name="l02193"></a>02193 data[i] = clr.<a class="codeRef" href="qcolor.html#rgb">rgb</a>();
<a name="l02194"></a>02194 }
<a name="l02195"></a>02195 <span class="keywordflow">return</span> img;
<a name="l02196"></a>02196 }
<a name="l02197"></a>02197
<a name="l02198"></a>02198 <span class="comment">// Contrast stuff (mosfet)</span>
<a name="l02199"></a><a class="code" href="classKImageEffect.html#a535d5caddc9238047dc558958921f191">02199</a> <a class="codeRef" href="qimage.html">QImage</a>& <a class="code" href="classKImageEffect.html#a535d5caddc9238047dc558958921f191" title="Fast, but low quality contrast of an image.">KImageEffect::contrast</a>(<a class="codeRef" href="qimage.html">QImage</a> &img, <span class="keywordtype">int</span> c)
<a name="l02200"></a>02200 {
<a name="l02201"></a>02201 <span class="keywordflow">if</span> (img.<a class="codeRef" href="qimage.html#width">width</a>() == 0 || img.<a class="codeRef" href="qimage.html#height">height</a>() == 0)
<a name="l02202"></a>02202 <span class="keywordflow">return</span> img;
<a name="l02203"></a>02203
<a name="l02204"></a>02204 <span class="keywordflow">if</span>(c > 255)
<a name="l02205"></a>02205 c = 255;
<a name="l02206"></a>02206 <span class="keywordflow">if</span>(c < -255)
<a name="l02207"></a>02207 c = -255;
<a name="l02208"></a>02208 <span class="keywordtype">int</span> pixels = img.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8 ? img.<a class="codeRef" href="qimage.html#width">width</a>()*img.<a class="codeRef" href="qimage.html#height">height</a>() :
<a name="l02209"></a>02209 img.<a class="codeRef" href="qimage.html#numColors">numColors</a>();
<a name="l02210"></a>02210 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *data = img.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8 ? (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)img.<a class="codeRef" href="qimage.html#bits">bits</a>() :
<a name="l02211"></a>02211 (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)img.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l02212"></a>02212 <span class="keywordtype">int</span> i, r, g, b;
<a name="l02213"></a>02213 <span class="keywordflow">for</span>(i=0; i < pixels; ++i){
<a name="l02214"></a>02214 r = qRed(data[i]);
<a name="l02215"></a>02215 g = qGreen(data[i]);
<a name="l02216"></a>02216 b = qBlue(data[i]);
<a name="l02217"></a>02217 <span class="keywordflow">if</span>(qGray(data[i]) <= 127){
<a name="l02218"></a>02218 <span class="keywordflow">if</span>(r - c > 0)
<a name="l02219"></a>02219 r -= c;
<a name="l02220"></a>02220 <span class="keywordflow">else</span>
<a name="l02221"></a>02221 r = 0;
<a name="l02222"></a>02222 <span class="keywordflow">if</span>(g - c > 0)
<a name="l02223"></a>02223 g -= c;
<a name="l02224"></a>02224 <span class="keywordflow">else</span>
<a name="l02225"></a>02225 g = 0;
<a name="l02226"></a>02226 <span class="keywordflow">if</span>(b - c > 0)
<a name="l02227"></a>02227 b -= c;
<a name="l02228"></a>02228 <span class="keywordflow">else</span>
<a name="l02229"></a>02229 b = 0;
<a name="l02230"></a>02230 }
<a name="l02231"></a>02231 <span class="keywordflow">else</span>{
<a name="l02232"></a>02232 <span class="keywordflow">if</span>(r + c <= 255)
<a name="l02233"></a>02233 r += c;
<a name="l02234"></a>02234 <span class="keywordflow">else</span>
<a name="l02235"></a>02235 r = 255;
<a name="l02236"></a>02236 <span class="keywordflow">if</span>(g + c <= 255)
<a name="l02237"></a>02237 g += c;
<a name="l02238"></a>02238 <span class="keywordflow">else</span>
<a name="l02239"></a>02239 g = 255;
<a name="l02240"></a>02240 <span class="keywordflow">if</span>(b + c <= 255)
<a name="l02241"></a>02241 b += c;
<a name="l02242"></a>02242 <span class="keywordflow">else</span>
<a name="l02243"></a>02243 b = 255;
<a name="l02244"></a>02244 }
<a name="l02245"></a>02245 data[i] = qRgba(r, g, b, qAlpha(data[i]));
<a name="l02246"></a>02246 }
<a name="l02247"></a>02247 <span class="keywordflow">return</span>(img);
<a name="l02248"></a>02248 }
<a name="l02249"></a>02249
<a name="l02250"></a>02250 <span class="comment">//======================================================================</span>
<a name="l02251"></a>02251 <span class="comment">//</span>
<a name="l02252"></a>02252 <span class="comment">// Dithering effects</span>
<a name="l02253"></a>02253 <span class="comment">//</span>
<a name="l02254"></a>02254 <span class="comment">//======================================================================</span>
<a name="l02255"></a>02255
<a name="l02256"></a>02256 <span class="comment">// adapted from kFSDither (C) 1997 Martin Jones (mjones@kde.org)</span>
<a name="l02257"></a>02257 <span class="comment">//</span>
<a name="l02258"></a>02258 <span class="comment">// Floyd-Steinberg dithering</span>
<a name="l02259"></a>02259 <span class="comment">// Ref: Bitmapped Graphics Programming in C++</span>
<a name="l02260"></a>02260 <span class="comment">// Marv Luse, Addison-Wesley Publishing, 1993.</span>
<a name="l02261"></a><a class="code" href="classKImageEffect.html#aefbc2ab4ea203701a36016fcadb638af">02261</a> <a class="codeRef" href="qimage.html">QImage</a>& <a class="code" href="classKImageEffect.html#aefbc2ab4ea203701a36016fcadb638af" title="Dither an image using Floyd-Steinberg dithering for low-color situations.">KImageEffect::dither</a>(<a class="codeRef" href="qimage.html">QImage</a> &img, <span class="keyword">const</span> <a class="codeRef" href="qcolor.html">QColor</a> *palette, <span class="keywordtype">int</span> size)
<a name="l02262"></a>02262 {
<a name="l02263"></a>02263 <span class="keywordflow">if</span> (img.<a class="codeRef" href="qimage.html#width">width</a>() == 0 || img.<a class="codeRef" href="qimage.html#height">height</a>() == 0 ||
<a name="l02264"></a>02264 palette == 0 || img.<a class="codeRef" href="qimage.html#depth">depth</a>() <= 8)
<a name="l02265"></a>02265 <span class="keywordflow">return</span> img;
<a name="l02266"></a>02266
<a name="l02267"></a>02267 <a class="codeRef" href="qimage.html">QImage</a> dImage( img.<a class="codeRef" href="qimage.html#width">width</a>(), img.<a class="codeRef" href="qimage.html#height">height</a>(), 8, size );
<a name="l02268"></a>02268 <span class="keywordtype">int</span> i;
<a name="l02269"></a>02269
<a name="l02270"></a>02270 dImage.<a class="codeRef" href="qimage.html#setNumColors">setNumColors</a>( size );
<a name="l02271"></a>02271 <span class="keywordflow">for</span> ( i = 0; i < size; i++ )
<a name="l02272"></a>02272 dImage.setColor( i, palette[ i ].<a class="codeRef" href="qcolor.html#rgb">rgb</a>() );
<a name="l02273"></a>02273
<a name="l02274"></a>02274 <span class="keywordtype">int</span> *rerr1 = <span class="keyword">new</span> <span class="keywordtype">int</span> [ img.<a class="codeRef" href="qimage.html#width">width</a>() * 2 ];
<a name="l02275"></a>02275 <span class="keywordtype">int</span> *gerr1 = <span class="keyword">new</span> <span class="keywordtype">int</span> [ img.<a class="codeRef" href="qimage.html#width">width</a>() * 2 ];
<a name="l02276"></a>02276 <span class="keywordtype">int</span> *berr1 = <span class="keyword">new</span> <span class="keywordtype">int</span> [ img.<a class="codeRef" href="qimage.html#width">width</a>() * 2 ];
<a name="l02277"></a>02277
<a name="l02278"></a>02278 memset( rerr1, 0, <span class="keyword">sizeof</span>( <span class="keywordtype">int</span> ) * img.<a class="codeRef" href="qimage.html#width">width</a>() * 2 );
<a name="l02279"></a>02279 memset( gerr1, 0, <span class="keyword">sizeof</span>( <span class="keywordtype">int</span> ) * img.<a class="codeRef" href="qimage.html#width">width</a>() * 2 );
<a name="l02280"></a>02280 memset( berr1, 0, <span class="keyword">sizeof</span>( <span class="keywordtype">int</span> ) * img.<a class="codeRef" href="qimage.html#width">width</a>() * 2 );
<a name="l02281"></a>02281
<a name="l02282"></a>02282 <span class="keywordtype">int</span> *rerr2 = rerr1 + img.<a class="codeRef" href="qimage.html#width">width</a>();
<a name="l02283"></a>02283 <span class="keywordtype">int</span> *gerr2 = gerr1 + img.<a class="codeRef" href="qimage.html#width">width</a>();
<a name="l02284"></a>02284 <span class="keywordtype">int</span> *berr2 = berr1 + img.<a class="codeRef" href="qimage.html#width">width</a>();
<a name="l02285"></a>02285
<a name="l02286"></a>02286 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> j = 0; j < img.<a class="codeRef" href="qimage.html#height">height</a>(); j++ )
<a name="l02287"></a>02287 {
<a name="l02288"></a>02288 uint *ip = (uint * )img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>( j );
<a name="l02289"></a>02289 uchar *dp = dImage.scanLine( j );
<a name="l02290"></a>02290
<a name="l02291"></a>02291 <span class="keywordflow">for</span> ( i = 0; i < img.<a class="codeRef" href="qimage.html#width">width</a>(); i++ )
<a name="l02292"></a>02292 {
<a name="l02293"></a>02293 rerr1[i] = rerr2[i] + qRed( *ip );
<a name="l02294"></a>02294 rerr2[i] = 0;
<a name="l02295"></a>02295 gerr1[i] = gerr2[i] + qGreen( *ip );
<a name="l02296"></a>02296 gerr2[i] = 0;
<a name="l02297"></a>02297 berr1[i] = berr2[i] + qBlue( *ip );
<a name="l02298"></a>02298 berr2[i] = 0;
<a name="l02299"></a>02299 ip++;
<a name="l02300"></a>02300 }
<a name="l02301"></a>02301
<a name="l02302"></a>02302 *dp++ = nearestColor( rerr1[0], gerr1[0], berr1[0], palette, size );
<a name="l02303"></a>02303
<a name="l02304"></a>02304 <span class="keywordflow">for</span> ( i = 1; i < img.<a class="codeRef" href="qimage.html#width">width</a>()-1; i++ )
<a name="l02305"></a>02305 {
<a name="l02306"></a>02306 <span class="keywordtype">int</span> indx = nearestColor( rerr1[i], gerr1[i], berr1[i], palette, size );
<a name="l02307"></a>02307 *dp = indx;
<a name="l02308"></a>02308
<a name="l02309"></a>02309 <span class="keywordtype">int</span> rerr = rerr1[i];
<a name="l02310"></a>02310 rerr -= palette[indx].<a class="codeRef" href="qcolor.html#red">red</a>();
<a name="l02311"></a>02311 <span class="keywordtype">int</span> gerr = gerr1[i];
<a name="l02312"></a>02312 gerr -= palette[indx].<a class="codeRef" href="qcolor.html#green">green</a>();
<a name="l02313"></a>02313 <span class="keywordtype">int</span> berr = berr1[i];
<a name="l02314"></a>02314 berr -= palette[indx].<a class="codeRef" href="qcolor.html#blue">blue</a>();
<a name="l02315"></a>02315
<a name="l02316"></a>02316 <span class="comment">// diffuse red error</span>
<a name="l02317"></a>02317 rerr1[ i+1 ] += ( rerr * 7 ) >> 4;
<a name="l02318"></a>02318 rerr2[ i-1 ] += ( rerr * 3 ) >> 4;
<a name="l02319"></a>02319 rerr2[ i ] += ( rerr * 5 ) >> 4;
<a name="l02320"></a>02320 rerr2[ i+1 ] += ( rerr ) >> 4;
<a name="l02321"></a>02321
<a name="l02322"></a>02322 <span class="comment">// diffuse green error</span>
<a name="l02323"></a>02323 gerr1[ i+1 ] += ( gerr * 7 ) >> 4;
<a name="l02324"></a>02324 gerr2[ i-1 ] += ( gerr * 3 ) >> 4;
<a name="l02325"></a>02325 gerr2[ i ] += ( gerr * 5 ) >> 4;
<a name="l02326"></a>02326 gerr2[ i+1 ] += ( gerr ) >> 4;
<a name="l02327"></a>02327
<a name="l02328"></a>02328 <span class="comment">// diffuse red error</span>
<a name="l02329"></a>02329 berr1[ i+1 ] += ( berr * 7 ) >> 4;
<a name="l02330"></a>02330 berr2[ i-1 ] += ( berr * 3 ) >> 4;
<a name="l02331"></a>02331 berr2[ i ] += ( berr * 5 ) >> 4;
<a name="l02332"></a>02332 berr2[ i+1 ] += ( berr ) >> 4;
<a name="l02333"></a>02333
<a name="l02334"></a>02334 dp++;
<a name="l02335"></a>02335 }
<a name="l02336"></a>02336
<a name="l02337"></a>02337 *dp = nearestColor( rerr1[i], gerr1[i], berr1[i], palette, size );
<a name="l02338"></a>02338 }
<a name="l02339"></a>02339
<a name="l02340"></a>02340 <span class="keyword">delete</span> [] rerr1;
<a name="l02341"></a>02341 <span class="keyword">delete</span> [] gerr1;
<a name="l02342"></a>02342 <span class="keyword">delete</span> [] berr1;
<a name="l02343"></a>02343
<a name="l02344"></a>02344 img = dImage;
<a name="l02345"></a>02345 <span class="keywordflow">return</span> img;
<a name="l02346"></a>02346 }
<a name="l02347"></a>02347
<a name="l02348"></a>02348 <span class="keywordtype">int</span> KImageEffect::nearestColor( <span class="keywordtype">int</span> r, <span class="keywordtype">int</span> g, <span class="keywordtype">int</span> b, <span class="keyword">const</span> <a class="codeRef" href="qcolor.html">QColor</a> *palette, <span class="keywordtype">int</span> size )
<a name="l02349"></a>02349 {
<a name="l02350"></a>02350 <span class="keywordflow">if</span> (palette == 0)
<a name="l02351"></a>02351 <span class="keywordflow">return</span> 0;
<a name="l02352"></a>02352
<a name="l02353"></a>02353 <span class="keywordtype">int</span> dr = palette[0].<a class="codeRef" href="qcolor.html#red">red</a>() - r;
<a name="l02354"></a>02354 <span class="keywordtype">int</span> dg = palette[0].<a class="codeRef" href="qcolor.html#green">green</a>() - g;
<a name="l02355"></a>02355 <span class="keywordtype">int</span> db = palette[0].<a class="codeRef" href="qcolor.html#blue">blue</a>() - b;
<a name="l02356"></a>02356
<a name="l02357"></a>02357 <span class="keywordtype">int</span> minDist = dr*dr + dg*dg + db*db;
<a name="l02358"></a>02358 <span class="keywordtype">int</span> nearest = 0;
<a name="l02359"></a>02359
<a name="l02360"></a>02360 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 1; i < size; i++ )
<a name="l02361"></a>02361 {
<a name="l02362"></a>02362 dr = palette[i].<a class="codeRef" href="qcolor.html#red">red</a>() - r;
<a name="l02363"></a>02363 dg = palette[i].<a class="codeRef" href="qcolor.html#green">green</a>() - g;
<a name="l02364"></a>02364 db = palette[i].<a class="codeRef" href="qcolor.html#blue">blue</a>() - b;
<a name="l02365"></a>02365
<a name="l02366"></a>02366 <span class="keywordtype">int</span> dist = dr*dr + dg*dg + db*db;
<a name="l02367"></a>02367
<a name="l02368"></a>02368 <span class="keywordflow">if</span> ( dist < minDist )
<a name="l02369"></a>02369 {
<a name="l02370"></a>02370 minDist = dist;
<a name="l02371"></a>02371 nearest = i;
<a name="l02372"></a>02372 }
<a name="l02373"></a>02373 }
<a name="l02374"></a>02374
<a name="l02375"></a>02375 <span class="keywordflow">return</span> nearest;
<a name="l02376"></a>02376 }
<a name="l02377"></a>02377
<a name="l02378"></a><a class="code" href="classKImageEffect.html#a0c4e65fc2c4ce326644c25c3ee4e470e">02378</a> <span class="keywordtype">bool</span> <a class="code" href="classKImageEffect.html#aeb41c4a7748892c4a58537876d2b4a43" title="Blends a color into the destination image, using an opacity value for blending one into another...">KImageEffect::blend</a>(
<a name="l02379"></a>02379 <span class="keyword">const</span> <a class="codeRef" href="qimage.html">QImage</a> & upper,
<a name="l02380"></a>02380 <span class="keyword">const</span> <a class="codeRef" href="qimage.html">QImage</a> & lower,
<a name="l02381"></a>02381 <a class="codeRef" href="qimage.html">QImage</a> & output
<a name="l02382"></a>02382 )
<a name="l02383"></a>02383 {
<a name="l02384"></a>02384 <span class="keywordflow">if</span> (
<a name="l02385"></a>02385 upper.<a class="codeRef" href="qimage.html#width">width</a>() > lower.<a class="codeRef" href="qimage.html#width">width</a>() ||
<a name="l02386"></a>02386 upper.<a class="codeRef" href="qimage.html#height">height</a>() > lower.<a class="codeRef" href="qimage.html#height">height</a>() ||
<a name="l02387"></a>02387 upper.<a class="codeRef" href="qimage.html#depth">depth</a>() != 32 ||
<a name="l02388"></a>02388 lower.<a class="codeRef" href="qimage.html#depth">depth</a>() != 32
<a name="l02389"></a>02389 )
<a name="l02390"></a>02390 {
<a name="l02391"></a>02391 <span class="preprocessor">#ifndef NDEBUG</span>
<a name="l02392"></a>02392 <span class="preprocessor"></span> std::cerr << <span class="stringliteral">"KImageEffect::blend : Sizes not correct\n"</span> ;
<a name="l02393"></a>02393 <span class="preprocessor">#endif</span>
<a name="l02394"></a>02394 <span class="preprocessor"></span> <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l02395"></a>02395 }
<a name="l02396"></a>02396
<a name="l02397"></a>02397 output = lower.<a class="codeRef" href="qimage.html#copy">copy</a>();
<a name="l02398"></a>02398
<a name="l02399"></a>02399 <span class="keyword">register</span> uchar *i, *o;
<a name="l02400"></a>02400 <span class="keyword">register</span> <span class="keywordtype">int</span> a;
<a name="l02401"></a>02401 <span class="keyword">register</span> <span class="keywordtype">int</span> col;
<a name="l02402"></a>02402 <span class="keyword">register</span> <span class="keywordtype">int</span> w = upper.<a class="codeRef" href="qimage.html#width">width</a>();
<a name="l02403"></a>02403 <span class="keywordtype">int</span> row(upper.<a class="codeRef" href="qimage.html#height">height</a>() - 1);
<a name="l02404"></a>02404
<a name="l02405"></a>02405 <span class="keywordflow">do</span> {
<a name="l02406"></a>02406
<a name="l02407"></a>02407 i = upper.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(row);
<a name="l02408"></a>02408 o = output.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(row);
<a name="l02409"></a>02409
<a name="l02410"></a>02410 col = w << 2;
<a name="l02411"></a>02411 --col;
<a name="l02412"></a>02412
<a name="l02413"></a>02413 <span class="keywordflow">do</span> {
<a name="l02414"></a>02414
<a name="l02415"></a>02415 <span class="keywordflow">while</span> (!(a = i[col]) && (col != 3)) {
<a name="l02416"></a>02416 --col; --col; --col; --col;
<a name="l02417"></a>02417 }
<a name="l02418"></a>02418
<a name="l02419"></a>02419 --col;
<a name="l02420"></a>02420 o[col] += ((i[col] - o[col]) * a) >> 8;
<a name="l02421"></a>02421
<a name="l02422"></a>02422 --col;
<a name="l02423"></a>02423 o[col] += ((i[col] - o[col]) * a) >> 8;
<a name="l02424"></a>02424
<a name="l02425"></a>02425 --col;
<a name="l02426"></a>02426 o[col] += ((i[col] - o[col]) * a) >> 8;
<a name="l02427"></a>02427
<a name="l02428"></a>02428 } <span class="keywordflow">while</span> (col--);
<a name="l02429"></a>02429
<a name="l02430"></a>02430 } <span class="keywordflow">while</span> (row--);
<a name="l02431"></a>02431
<a name="l02432"></a>02432 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l02433"></a>02433 }
<a name="l02434"></a>02434
<a name="l02435"></a>02435 <span class="preprocessor">#if 0</span>
<a name="l02436"></a>02436 <span class="preprocessor"></span><span class="comment">// Not yet...</span>
<a name="l02437"></a>02437 <span class="keywordtype">bool</span> <a class="code" href="classKImageEffect.html#aeb41c4a7748892c4a58537876d2b4a43" title="Blends a color into the destination image, using an opacity value for blending one into another...">KImageEffect::blend</a>(
<a name="l02438"></a>02438 <span class="keyword">const</span> <a class="codeRef" href="qimage.html">QImage</a> & upper,
<a name="l02439"></a>02439 <span class="keyword">const</span> <a class="codeRef" href="qimage.html">QImage</a> & lower,
<a name="l02440"></a>02440 <a class="codeRef" href="qimage.html">QImage</a> & output,
<a name="l02441"></a>02441 <span class="keyword">const</span> <a class="codeRef" href="qrect.html">QRect</a> & destRect
<a name="l02442"></a>02442 )
<a name="l02443"></a>02443 {
<a name="l02444"></a>02444 output = lower.<a class="codeRef" href="qimage.html#copy">copy</a>();
<a name="l02445"></a>02445 <span class="keywordflow">return</span> output;
<a name="l02446"></a>02446 }
<a name="l02447"></a>02447
<a name="l02448"></a>02448 <span class="preprocessor">#endif</span>
<a name="l02449"></a>02449 <span class="preprocessor"></span>
<a name="l02450"></a><a class="code" href="classKImageEffect.html#a6af6d358685b00711cf64048c50d5aa7">02450</a> <span class="keywordtype">bool</span> <a class="code" href="classKImageEffect.html#aeb41c4a7748892c4a58537876d2b4a43" title="Blends a color into the destination image, using an opacity value for blending one into another...">KImageEffect::blend</a>(
<a name="l02451"></a>02451 <span class="keywordtype">int</span> &x, <span class="keywordtype">int</span> &y,
<a name="l02452"></a>02452 <span class="keyword">const</span> <a class="codeRef" href="qimage.html">QImage</a> & upper,
<a name="l02453"></a>02453 <span class="keyword">const</span> <a class="codeRef" href="qimage.html">QImage</a> & lower,
<a name="l02454"></a>02454 <a class="codeRef" href="qimage.html">QImage</a> & output
<a name="l02455"></a>02455 )
<a name="l02456"></a>02456 {
<a name="l02457"></a>02457 <span class="keywordtype">int</span> cx=0, cy=0, cw=upper.<a class="codeRef" href="qimage.html#width">width</a>(), ch=upper.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l02458"></a>02458
<a name="l02459"></a>02459 <span class="keywordflow">if</span> ( upper.<a class="codeRef" href="qimage.html#width">width</a>() + x > lower.<a class="codeRef" href="qimage.html#width">width</a>() ||
<a name="l02460"></a>02460 upper.<a class="codeRef" href="qimage.html#height">height</a>() + y > lower.<a class="codeRef" href="qimage.html#height">height</a>() ||
<a name="l02461"></a>02461 x < 0 || y < 0 ||
<a name="l02462"></a>02462 upper.<a class="codeRef" href="qimage.html#depth">depth</a>() != 32 || lower.<a class="codeRef" href="qimage.html#depth">depth</a>() != 32 )
<a name="l02463"></a>02463 {
<a name="l02464"></a>02464 <span class="keywordflow">if</span> ( x > lower.<a class="codeRef" href="qimage.html#width">width</a>() || y > lower.<a class="codeRef" href="qimage.html#height">height</a>() ) <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l02465"></a>02465 <span class="keywordflow">if</span> ( upper.<a class="codeRef" href="qimage.html#width">width</a>()<=0 || upper.<a class="codeRef" href="qimage.html#height">height</a>() <= 0 ) <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l02466"></a>02466 <span class="keywordflow">if</span> ( lower.<a class="codeRef" href="qimage.html#width">width</a>()<=0 || lower.<a class="codeRef" href="qimage.html#height">height</a>() <= 0 ) <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l02467"></a>02467
<a name="l02468"></a>02468 <span class="keywordflow">if</span> (x<0) {cx=-x; cw+=x; x=0; };
<a name="l02469"></a>02469 <span class="keywordflow">if</span> (cw + x > lower.<a class="codeRef" href="qimage.html#width">width</a>()) { cw=lower.<a class="codeRef" href="qimage.html#width">width</a>()-x; };
<a name="l02470"></a>02470 <span class="keywordflow">if</span> (y<0) {cy=-y; ch+=y; y=0; };
<a name="l02471"></a>02471 <span class="keywordflow">if</span> (ch + y > lower.<a class="codeRef" href="qimage.html#height">height</a>()) { ch=lower.<a class="codeRef" href="qimage.html#height">height</a>()-y; };
<a name="l02472"></a>02472
<a name="l02473"></a>02473 <span class="keywordflow">if</span> ( cx >= upper.<a class="codeRef" href="qimage.html#width">width</a>() || cy >= upper.<a class="codeRef" href="qimage.html#height">height</a>() ) <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l02474"></a>02474 <span class="keywordflow">if</span> ( cw <= 0 || ch <= 0 ) <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l02475"></a>02475 }
<a name="l02476"></a>02476
<a name="l02477"></a>02477 output.<a class="codeRef" href="qimage.html#create">create</a>(cw,ch,32);
<a name="l02478"></a>02478 <span class="comment">// output.setAlphaBuffer(true); // I should do some benchmarks to see if</span>
<a name="l02479"></a>02479 <span class="comment">// this is worth the effort</span>
<a name="l02480"></a>02480
<a name="l02481"></a>02481 <span class="keyword">register</span> QRgb *i, *o, *b;
<a name="l02482"></a>02482
<a name="l02483"></a>02483 <span class="keyword">register</span> <span class="keywordtype">int</span> a;
<a name="l02484"></a>02484 <span class="keyword">register</span> <span class="keywordtype">int</span> j,k;
<a name="l02485"></a>02485 <span class="keywordflow">for</span> (j=0; j<ch; j++)
<a name="l02486"></a>02486 {
<a name="l02487"></a>02487 b=<span class="keyword">reinterpret_cast<</span>QRgb *<span class="keyword">></span>(&lower.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y+j) [ (x+cw) << 2 ]);
<a name="l02488"></a>02488 i=<span class="keyword">reinterpret_cast<</span>QRgb *<span class="keyword">></span>(&upper.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(cy+j)[ (cx+cw) << 2 ]);
<a name="l02489"></a>02489 o=<span class="keyword">reinterpret_cast<</span>QRgb *<span class="keyword">></span>(&output.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(j) [ cw << 2 ]);
<a name="l02490"></a>02490
<a name="l02491"></a>02491 k=cw-1;
<a name="l02492"></a>02492 --b; --i; --o;
<a name="l02493"></a>02493 <span class="keywordflow">do</span>
<a name="l02494"></a>02494 {
<a name="l02495"></a>02495 <span class="keywordflow">while</span> ( !(a=qAlpha(*i)) && k>0 )
<a name="l02496"></a>02496 {
<a name="l02497"></a>02497 i--;
<a name="l02498"></a>02498 <span class="comment">// *o=0;</span>
<a name="l02499"></a>02499 *o=*b;
<a name="l02500"></a>02500 --o; --b;
<a name="l02501"></a>02501 k--;
<a name="l02502"></a>02502 };
<a name="l02503"></a>02503 <span class="comment">// *o=0xFF;</span>
<a name="l02504"></a>02504 *o = qRgb(qRed(*b) + (((qRed(*i) - qRed(*b)) * a) >> 8),
<a name="l02505"></a>02505 qGreen(*b) + (((qGreen(*i) - qGreen(*b)) * a) >> 8),
<a name="l02506"></a>02506 qBlue(*b) + (((qBlue(*i) - qBlue(*b)) * a) >> 8));
<a name="l02507"></a>02507 --i; --o; --b;
<a name="l02508"></a>02508 } <span class="keywordflow">while</span> (k--);
<a name="l02509"></a>02509 }
<a name="l02510"></a>02510
<a name="l02511"></a>02511 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l02512"></a>02512 }
<a name="l02513"></a>02513
<a name="l02514"></a><a class="code" href="classKImageEffect.html#a771472e3c76d69b36d8afedf20bb4c5f">02514</a> <span class="keywordtype">bool</span> <a class="code" href="classKImageEffect.html#a771472e3c76d69b36d8afedf20bb4c5f" title="Blend an image into another one, using alpha in the expected way and over coordinates x and y with re...">KImageEffect::blendOnLower</a>(
<a name="l02515"></a>02515 <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y,
<a name="l02516"></a>02516 <span class="keyword">const</span> <a class="codeRef" href="qimage.html">QImage</a> & upper,
<a name="l02517"></a>02517 <span class="keyword">const</span> <a class="codeRef" href="qimage.html">QImage</a> & lower
<a name="l02518"></a>02518 )
<a name="l02519"></a>02519 {
<a name="l02520"></a>02520 <span class="keywordtype">int</span> cx=0, cy=0, cw=upper.<a class="codeRef" href="qimage.html#width">width</a>(), ch=upper.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l02521"></a>02521
<a name="l02522"></a>02522 <span class="keywordflow">if</span> ( upper.<a class="codeRef" href="qimage.html#depth">depth</a>() != 32 || lower.<a class="codeRef" href="qimage.html#depth">depth</a>() != 32 ) <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l02523"></a>02523 <span class="keywordflow">if</span> ( x + cw > lower.<a class="codeRef" href="qimage.html#width">width</a>() ||
<a name="l02524"></a>02524 y + ch > lower.<a class="codeRef" href="qimage.html#height">height</a>() ||
<a name="l02525"></a>02525 x < 0 || y < 0 )
<a name="l02526"></a>02526 {
<a name="l02527"></a>02527 <span class="keywordflow">if</span> ( x > lower.<a class="codeRef" href="qimage.html#width">width</a>() || y > lower.<a class="codeRef" href="qimage.html#height">height</a>() ) <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l02528"></a>02528 <span class="keywordflow">if</span> ( upper.<a class="codeRef" href="qimage.html#width">width</a>()<=0 || upper.<a class="codeRef" href="qimage.html#height">height</a>() <= 0 ) <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l02529"></a>02529 <span class="keywordflow">if</span> ( lower.<a class="codeRef" href="qimage.html#width">width</a>()<=0 || lower.<a class="codeRef" href="qimage.html#height">height</a>() <= 0 ) <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l02530"></a>02530
<a name="l02531"></a>02531 <span class="keywordflow">if</span> (x<0) {cx=-x; cw+=x; x=0; };
<a name="l02532"></a>02532 <span class="keywordflow">if</span> (cw + x > lower.<a class="codeRef" href="qimage.html#width">width</a>()) { cw=lower.<a class="codeRef" href="qimage.html#width">width</a>()-x; };
<a name="l02533"></a>02533 <span class="keywordflow">if</span> (y<0) {cy=-y; ch+=y; y=0; };
<a name="l02534"></a>02534 <span class="keywordflow">if</span> (ch + y > lower.<a class="codeRef" href="qimage.html#height">height</a>()) { ch=lower.<a class="codeRef" href="qimage.html#height">height</a>()-y; };
<a name="l02535"></a>02535
<a name="l02536"></a>02536 <span class="keywordflow">if</span> ( cx >= upper.<a class="codeRef" href="qimage.html#width">width</a>() || cy >= upper.<a class="codeRef" href="qimage.html#height">height</a>() ) <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l02537"></a>02537 <span class="keywordflow">if</span> ( cw <= 0 || ch <= 0 ) <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l02538"></a>02538 }
<a name="l02539"></a>02539
<a name="l02540"></a>02540 <span class="keyword">register</span> uchar *i, *b;
<a name="l02541"></a>02541 <span class="keyword">register</span> <span class="keywordtype">int</span> a;
<a name="l02542"></a>02542 <span class="keyword">register</span> <span class="keywordtype">int</span> k;
<a name="l02543"></a>02543
<a name="l02544"></a>02544 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j=0; j<ch; j++)
<a name="l02545"></a>02545 {
<a name="l02546"></a>02546 b=&lower.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y+j) [ (x+cw) << 2 ];
<a name="l02547"></a>02547 i=&upper.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(cy+j)[ (cx+cw) << 2 ];
<a name="l02548"></a>02548
<a name="l02549"></a>02549 k=cw-1;
<a name="l02550"></a>02550 --b; --i;
<a name="l02551"></a>02551 <span class="keywordflow">do</span>
<a name="l02552"></a>02552 {
<a name="l02553"></a>02553 <span class="preprocessor">#ifndef WORDS_BIGENDIAN</span>
<a name="l02554"></a>02554 <span class="preprocessor"></span> <span class="keywordflow">while</span> ( !(a=*i) && k>0 )
<a name="l02555"></a>02555 #<span class="keywordflow">else</span>
<a name="l02556"></a>02556 <span class="keywordflow">while</span> ( !(a=*(i-3)) && k>0 )
<a name="l02557"></a>02557 #endif
<a name="l02558"></a>02558 {
<a name="l02559"></a>02559 i-=4; b-=4; k--;
<a name="l02560"></a>02560 };
<a name="l02561"></a>02561
<a name="l02562"></a>02562 <span class="preprocessor">#ifndef WORDS_BIGENDIAN</span>
<a name="l02563"></a>02563 <span class="preprocessor"></span> --i; --b;
<a name="l02564"></a>02564 *b += ( ((*i - *b) * a) >> 8 );
<a name="l02565"></a>02565 --i; --b;
<a name="l02566"></a>02566 *b += ( ((*i - *b) * a) >> 8 );
<a name="l02567"></a>02567 --i; --b;
<a name="l02568"></a>02568 *b += ( ((*i - *b) * a) >> 8 );
<a name="l02569"></a>02569 --i; --b;
<a name="l02570"></a>02570 <span class="preprocessor">#else</span>
<a name="l02571"></a>02571 <span class="preprocessor"></span> *b += ( ((*i - *b) * a) >> 8 );
<a name="l02572"></a>02572 --i; --b;
<a name="l02573"></a>02573 *b += ( ((*i - *b) * a) >> 8 );
<a name="l02574"></a>02574 --i; --b;
<a name="l02575"></a>02575 *b += ( ((*i - *b) * a) >> 8 );
<a name="l02576"></a>02576 i -= 2; b -= 2;
<a name="l02577"></a>02577 <span class="preprocessor">#endif</span>
<a name="l02578"></a>02578 <span class="preprocessor"></span> } <span class="keywordflow">while</span> (k--);
<a name="l02579"></a>02579 }
<a name="l02580"></a>02580
<a name="l02581"></a>02581 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l02582"></a>02582 }
<a name="l02583"></a>02583
<a name="l02584"></a><a class="code" href="classKImageEffect.html#a1a1c9230801db82a8749afce2bca3c0a">02584</a> <span class="keywordtype">void</span> <a class="code" href="classKImageEffect.html#a771472e3c76d69b36d8afedf20bb4c5f" title="Blend an image into another one, using alpha in the expected way and over coordinates x and y with re...">KImageEffect::blendOnLower</a>(<span class="keyword">const</span> <a class="codeRef" href="qimage.html">QImage</a> &upper, <span class="keyword">const</span> <a class="codeRef" href="qpoint.html">QPoint</a> &upperOffset,
<a name="l02585"></a>02585 <a class="codeRef" href="qimage.html">QImage</a> &lower, <span class="keyword">const</span> <a class="codeRef" href="qrect.html">QRect</a> &lowerRect)
<a name="l02586"></a>02586 {
<a name="l02587"></a>02587 <span class="comment">// clip rect</span>
<a name="l02588"></a>02588 <a class="codeRef" href="qrect.html">QRect</a> lr = lowerRect & lower.<a class="codeRef" href="qimage.html#rect">rect</a>();
<a name="l02589"></a>02589 lr.<a class="codeRef" href="qrect.html#setWidth">setWidth</a>( QMIN(lr.<a class="codeRef" href="qrect.html#width">width</a>(), upper.<a class="codeRef" href="qimage.html#width">width</a>()-upperOffset.<a class="codeRef" href="qpoint.html#x">x</a>()) );
<a name="l02590"></a>02590 lr.<a class="codeRef" href="qrect.html#setHeight">setHeight</a>( QMIN(lr.<a class="codeRef" href="qrect.html#height">height</a>(), upper.<a class="codeRef" href="qimage.html#height">height</a>()-upperOffset.<a class="codeRef" href="qpoint.html#y">y</a>()) );
<a name="l02591"></a>02591 <span class="keywordflow">if</span> ( !lr.<a class="codeRef" href="qrect.html#isValid">isValid</a>() ) <span class="keywordflow">return</span>;
<a name="l02592"></a>02592
<a name="l02593"></a>02593 <span class="comment">// blend</span>
<a name="l02594"></a>02594 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> y = 0; y < lr.<a class="codeRef" href="qrect.html#height">height</a>(); y++) {
<a name="l02595"></a>02595 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> x = 0; x < lr.<a class="codeRef" href="qrect.html#width">width</a>(); x++) {
<a name="l02596"></a>02596 QRgb *b = <span class="keyword">reinterpret_cast<</span>QRgb*<span class="keyword">></span>(lower.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(lr.<a class="codeRef" href="qrect.html#y">y</a>() + y)+ (lr.<a class="codeRef" href="qrect.html#x">x</a>() + x) * <span class="keyword">sizeof</span>(QRgb));
<a name="l02597"></a>02597 QRgb *d = <span class="keyword">reinterpret_cast<</span>QRgb*<span class="keyword">></span>(upper.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(upperOffset.<a class="codeRef" href="qpoint.html#y">y</a>() + y) + (upperOffset.<a class="codeRef" href="qpoint.html#x">x</a>() + x) * <span class="keyword">sizeof</span>(QRgb));
<a name="l02598"></a>02598 <span class="keywordtype">int</span> a = qAlpha(*d);
<a name="l02599"></a>02599 *b = qRgb(qRed(*b) - (((qRed(*b) - qRed(*d)) * a) >> 8),
<a name="l02600"></a>02600 qGreen(*b) - (((qGreen(*b) - qGreen(*d)) * a) >> 8),
<a name="l02601"></a>02601 qBlue(*b) - (((qBlue(*b) - qBlue(*d)) * a) >> 8));
<a name="l02602"></a>02602 }
<a name="l02603"></a>02603 }
<a name="l02604"></a>02604 }
<a name="l02605"></a>02605
<a name="l02606"></a><a class="code" href="classKImageEffect.html#a27f5ffd36ad24f0758047010e24f61e8">02606</a> <span class="keywordtype">void</span> <a class="code" href="classKImageEffect.html#a771472e3c76d69b36d8afedf20bb4c5f" title="Blend an image into another one, using alpha in the expected way and over coordinates x and y with re...">KImageEffect::blendOnLower</a>(<span class="keyword">const</span> <a class="codeRef" href="qimage.html">QImage</a> &upper, <span class="keyword">const</span> <a class="codeRef" href="qpoint.html">QPoint</a> &upperOffset,
<a name="l02607"></a>02607 <a class="codeRef" href="qimage.html">QImage</a> &lower, <span class="keyword">const</span> <a class="codeRef" href="qrect.html">QRect</a> &lowerRect, <span class="keywordtype">float</span> opacity)
<a name="l02608"></a>02608 {
<a name="l02609"></a>02609 <span class="comment">// clip rect</span>
<a name="l02610"></a>02610 <a class="codeRef" href="qrect.html">QRect</a> lr = lowerRect & lower.<a class="codeRef" href="qimage.html#rect">rect</a>();
<a name="l02611"></a>02611 lr.<a class="codeRef" href="qrect.html#setWidth">setWidth</a>( QMIN(lr.<a class="codeRef" href="qrect.html#width">width</a>(), upper.<a class="codeRef" href="qimage.html#width">width</a>()-upperOffset.<a class="codeRef" href="qpoint.html#x">x</a>()) );
<a name="l02612"></a>02612 lr.<a class="codeRef" href="qrect.html#setHeight">setHeight</a>( QMIN(lr.<a class="codeRef" href="qrect.html#height">height</a>(), upper.<a class="codeRef" href="qimage.html#height">height</a>()-upperOffset.<a class="codeRef" href="qpoint.html#y">y</a>()) );
<a name="l02613"></a>02613 <span class="keywordflow">if</span> ( !lr.<a class="codeRef" href="qrect.html#isValid">isValid</a>() ) <span class="keywordflow">return</span>;
<a name="l02614"></a>02614
<a name="l02615"></a>02615 <span class="comment">// blend</span>
<a name="l02616"></a>02616 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> y = 0; y < lr.<a class="codeRef" href="qrect.html#height">height</a>(); y++) {
<a name="l02617"></a>02617 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> x = 0; x < lr.<a class="codeRef" href="qrect.html#width">width</a>(); x++) {
<a name="l02618"></a>02618 QRgb *b = <span class="keyword">reinterpret_cast<</span>QRgb*<span class="keyword">></span>(lower.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(lr.<a class="codeRef" href="qrect.html#y">y</a>() + y)+ (lr.<a class="codeRef" href="qrect.html#x">x</a>() + x) * <span class="keyword">sizeof</span>(QRgb));
<a name="l02619"></a>02619 QRgb *d = <span class="keyword">reinterpret_cast<</span>QRgb*<span class="keyword">></span>(upper.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(upperOffset.<a class="codeRef" href="qpoint.html#y">y</a>() + y) + (upperOffset.<a class="codeRef" href="qpoint.html#x">x</a>() + x) * <span class="keyword">sizeof</span>(QRgb));
<a name="l02620"></a>02620 <span class="keywordtype">int</span> a = qRound(opacity * qAlpha(*d));
<a name="l02621"></a>02621 *b = qRgb(qRed(*b) - (((qRed(*b) - qRed(*d)) * a) >> 8),
<a name="l02622"></a>02622 qGreen(*b) - (((qGreen(*b) - qGreen(*d)) * a) >> 8),
<a name="l02623"></a>02623 qBlue(*b) - (((qBlue(*b) - qBlue(*d)) * a) >> 8));
<a name="l02624"></a>02624 }
<a name="l02625"></a>02625 }
<a name="l02626"></a>02626 }
<a name="l02627"></a>02627
<a name="l02628"></a><a class="code" href="classKImageEffect.html#a368790538d6bb63f0599ec766903df99">02628</a> <a class="codeRef" href="qrect.html">QRect</a> <a class="code" href="classKImageEffect.html#a368790538d6bb63f0599ec766903df99" title="Compute the destination rectangle where to draw the upper image on top of another image using the giv...">KImageEffect::computeDestinationRect</a>(<span class="keyword">const</span> <a class="codeRef" href="qsize.html">QSize</a> &lowerSize,
<a name="l02629"></a>02629 <a class="code" href="classKImageEffect.html#a817d86d51d69b85b894ec765af8c61ed" title="Disposition of a source image on top of a destination image.">Disposition</a> disposition, <a class="codeRef" href="qimage.html">QImage</a> &upper)
<a name="l02630"></a>02630 {
<a name="l02631"></a>02631 <span class="keywordtype">int</span> w = lowerSize.<a class="codeRef" href="qsize.html#width">width</a>();
<a name="l02632"></a>02632 <span class="keywordtype">int</span> h = lowerSize.<a class="codeRef" href="qsize.html#height">height</a>();
<a name="l02633"></a>02633 <span class="keywordtype">int</span> ww = upper.<a class="codeRef" href="qimage.html#width">width</a>();
<a name="l02634"></a>02634 <span class="keywordtype">int</span> wh = upper.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l02635"></a>02635 <a class="codeRef" href="qrect.html">QRect</a> d;
<a name="l02636"></a>02636
<a name="l02637"></a>02637 <span class="keywordflow">switch</span> (disposition) {
<a name="l02638"></a>02638 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a817d86d51d69b85b894ec765af8c61eda1948646445935019ba49590d5a0f872d" title="Don't overlay.">NoImage</a>:
<a name="l02639"></a>02639 <span class="keywordflow">break</span>;
<a name="l02640"></a>02640 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a817d86d51d69b85b894ec765af8c61edabd5fa02164dd24d562a1870f4417fcd3" title="Center top image on botton image.">Centered</a>:
<a name="l02641"></a>02641 d.<a class="codeRef" href="qrect.html#setRect">setRect</a>((w - ww) / 2, (h - wh) / 2, ww, wh);
<a name="l02642"></a>02642 <span class="keywordflow">break</span>;
<a name="l02643"></a>02643 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a817d86d51d69b85b894ec765af8c61edad85d1a58980e7f31e6cd146c73d47740" title="Tile top image on bottom image.">Tiled</a>:
<a name="l02644"></a>02644 d.<a class="codeRef" href="qrect.html#setRect">setRect</a>(0, 0, w, h);
<a name="l02645"></a>02645 <span class="keywordflow">break</span>;
<a name="l02646"></a>02646 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a817d86d51d69b85b894ec765af8c61eda2d9dd55961bc8e35ee83d32f81981832" title="Center and tile top image on bottom image.">CenterTiled</a>:
<a name="l02647"></a>02647 d.<a class="codeRef" href="qrect.html#setCoords">setCoords</a>(-ww + ((w - ww) / 2) % ww, -wh + ((h - wh) / 2) % wh,
<a name="l02648"></a>02648 w-1, h-1);
<a name="l02649"></a>02649 <span class="keywordflow">break</span>;
<a name="l02650"></a>02650 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a817d86d51d69b85b894ec765af8c61eda755611776b66b4f8770f725fba429c10" title="Scale.">Scaled</a>:
<a name="l02651"></a>02651 upper = upper.<a class="codeRef" href="qimage.html#smoothScale">smoothScale</a>(w, h);
<a name="l02652"></a>02652 d.<a class="codeRef" href="qrect.html#setRect">setRect</a>(0, 0, w, h);
<a name="l02653"></a>02653 <span class="keywordflow">break</span>;
<a name="l02654"></a>02654 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a817d86d51d69b85b894ec765af8c61eda1f5f39883e189adee31ed8f7452760ed" title="Center and scale or scale aspect.">CenteredAutoFit</a>:
<a name="l02655"></a>02655 <span class="keywordflow">if</span>( ww <= w && wh <= h ) {
<a name="l02656"></a>02656 d.<a class="codeRef" href="qrect.html#setRect">setRect</a>((w - ww) / 2, (h - wh) / 2, ww, wh); <span class="comment">// like Centered</span>
<a name="l02657"></a>02657 <span class="keywordflow">break</span>;
<a name="l02658"></a>02658 }
<a name="l02659"></a>02659 <span class="comment">// fall through</span>
<a name="l02660"></a>02660 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a817d86d51d69b85b894ec765af8c61eda594487e467c26884f77f5bbb100a2842" title="Center and scale aspect.">CenteredMaxpect</a>: {
<a name="l02661"></a>02661 <span class="keywordtype">double</span> sx = (double) w / ww;
<a name="l02662"></a>02662 <span class="keywordtype">double</span> sy = (double) h / wh;
<a name="l02663"></a>02663 <span class="keywordflow">if</span> (sx > sy) {
<a name="l02664"></a>02664 ww = (int)(sy * ww);
<a name="l02665"></a>02665 wh = h;
<a name="l02666"></a>02666 } <span class="keywordflow">else</span> {
<a name="l02667"></a>02667 wh = (int)(sx * wh);
<a name="l02668"></a>02668 ww = w;
<a name="l02669"></a>02669 }
<a name="l02670"></a>02670 upper = upper.<a class="codeRef" href="qimage.html#smoothScale">smoothScale</a>(ww, wh);
<a name="l02671"></a>02671 d.<a class="codeRef" href="qrect.html#setRect">setRect</a>((w - ww) / 2, (h - wh) / 2, ww, wh);
<a name="l02672"></a>02672 <span class="keywordflow">break</span>;
<a name="l02673"></a>02673 }
<a name="l02674"></a>02674 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a817d86d51d69b85b894ec765af8c61edad2d7064074eb75f9fe87d9c2a4e79b48" title="Tile and scale aspect.">TiledMaxpect</a>: {
<a name="l02675"></a>02675 <span class="keywordtype">double</span> sx = (double) w / ww;
<a name="l02676"></a>02676 <span class="keywordtype">double</span> sy = (double) h / wh;
<a name="l02677"></a>02677 <span class="keywordflow">if</span> (sx > sy) {
<a name="l02678"></a>02678 ww = (int)(sy * ww);
<a name="l02679"></a>02679 wh = h;
<a name="l02680"></a>02680 } <span class="keywordflow">else</span> {
<a name="l02681"></a>02681 wh = (int)(sx * wh);
<a name="l02682"></a>02682 ww = w;
<a name="l02683"></a>02683 }
<a name="l02684"></a>02684 upper = upper.<a class="codeRef" href="qimage.html#smoothScale">smoothScale</a>(ww, wh);
<a name="l02685"></a>02685 d.<a class="codeRef" href="qrect.html#setRect">setRect</a>(0, 0, w, h);
<a name="l02686"></a>02686 <span class="keywordflow">break</span>;
<a name="l02687"></a>02687 }
<a name="l02688"></a>02688 }
<a name="l02689"></a>02689
<a name="l02690"></a>02690 <span class="keywordflow">return</span> d;
<a name="l02691"></a>02691 }
<a name="l02692"></a>02692
<a name="l02693"></a><a class="code" href="classKImageEffect.html#ab82db28b55944655deff1ee2d6b452ab">02693</a> <span class="keywordtype">void</span> <a class="code" href="classKImageEffect.html#a771472e3c76d69b36d8afedf20bb4c5f" title="Blend an image into another one, using alpha in the expected way and over coordinates x and y with re...">KImageEffect::blendOnLower</a>(<a class="codeRef" href="qimage.html">QImage</a> &upper, <a class="codeRef" href="qimage.html">QImage</a> &lower,
<a name="l02694"></a>02694 <a class="code" href="classKImageEffect.html#a817d86d51d69b85b894ec765af8c61ed" title="Disposition of a source image on top of a destination image.">Disposition</a> disposition, <span class="keywordtype">float</span> opacity)
<a name="l02695"></a>02695 {
<a name="l02696"></a>02696 <a class="codeRef" href="qrect.html">QRect</a> r = <a class="code" href="classKImageEffect.html#a368790538d6bb63f0599ec766903df99" title="Compute the destination rectangle where to draw the upper image on top of another image using the giv...">computeDestinationRect</a>(lower.<a class="codeRef" href="qimage.html#size">size</a>(), disposition, upper);
<a name="l02697"></a>02697 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> y = r.<a class="codeRef" href="qrect.html#top">top</a>(); y<r.<a class="codeRef" href="qrect.html#bottom">bottom</a>(); y += upper.<a class="codeRef" href="qimage.html#height">height</a>())
<a name="l02698"></a>02698 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> x = r.<a class="codeRef" href="qrect.html#left">left</a>(); x<r.<a class="codeRef" href="qrect.html#right">right</a>(); x += upper.<a class="codeRef" href="qimage.html#width">width</a>())
<a name="l02699"></a>02699 <a class="code" href="classKImageEffect.html#a771472e3c76d69b36d8afedf20bb4c5f" title="Blend an image into another one, using alpha in the expected way and over coordinates x and y with re...">blendOnLower</a>(upper, <a class="codeRef" href="qpoint.html">QPoint</a>(-QMIN(x, 0), -QMIN(y, 0)),
<a name="l02700"></a>02700 lower, <a class="codeRef" href="qrect.html">QRect</a>(x, y, upper.<a class="codeRef" href="qimage.html#width">width</a>(), upper.<a class="codeRef" href="qimage.html#height">height</a>()), opacity);
<a name="l02701"></a>02701 }
<a name="l02702"></a>02702
<a name="l02703"></a>02703
<a name="l02704"></a>02704 <span class="comment">// For selected icons</span>
<a name="l02705"></a><a class="code" href="classKImageEffect.html#a6062fc85735a4cb0703d1d042c33aad2">02705</a> <a class="codeRef" href="qimage.html">QImage</a>& <a class="code" href="classKImageEffect.html#a6062fc85735a4cb0703d1d042c33aad2" title="Calculate the image for a selected image, for instance a selected icon on the desktop.">KImageEffect::selectedImage</a>( <a class="codeRef" href="qimage.html">QImage</a> &img, <span class="keyword">const</span> <a class="codeRef" href="qcolor.html">QColor</a> &col )
<a name="l02706"></a>02706 {
<a name="l02707"></a>02707 <span class="keywordflow">return</span> <a class="code" href="classKImageEffect.html#aeb41c4a7748892c4a58537876d2b4a43" title="Blends a color into the destination image, using an opacity value for blending one into another...">blend</a>( col, img, 0.5);
<a name="l02708"></a>02708 }
<a name="l02709"></a>02709
<a name="l02710"></a>02710 <span class="comment">//</span>
<a name="l02711"></a>02711 <span class="comment">// ===================================================================</span>
<a name="l02712"></a>02712 <span class="comment">// Effects originally ported from ImageMagick for PixiePlus, plus a few</span>
<a name="l02713"></a>02713 <span class="comment">// new ones. (mosfet 05/26/2003)</span>
<a name="l02714"></a>02714 <span class="comment">// ===================================================================</span>
<a name="l02715"></a>02715 <span class="comment">//</span>
<a name="l02716"></a>02716 <span class="comment">/*</span>
<a name="l02717"></a>02717 <span class="comment"> Portions of this software are based on ImageMagick. Such portions are clearly</span>
<a name="l02718"></a>02718 <span class="comment">marked as being ported from ImageMagick. ImageMagick is copyrighted under the</span>
<a name="l02719"></a>02719 <span class="comment">following conditions:</span>
<a name="l02720"></a>02720 <span class="comment"></span>
<a name="l02721"></a>02721 <span class="comment">Copyright (C) 2003 ImageMagick Studio, a non-profit organization dedicated to</span>
<a name="l02722"></a>02722 <span class="comment">making software imaging solutions freely available.</span>
<a name="l02723"></a>02723 <span class="comment"></span>
<a name="l02724"></a>02724 <span class="comment">Permission is hereby granted, free of charge, to any person obtaining a copy</span>
<a name="l02725"></a>02725 <span class="comment">of this software and associated documentation files ("ImageMagick"), to deal</span>
<a name="l02726"></a>02726 <span class="comment">in ImageMagick without restriction, including without limitation the rights</span>
<a name="l02727"></a>02727 <span class="comment">to use, copy, modify, merge, publish, distribute, sublicense, and/or sell</span>
<a name="l02728"></a>02728 <span class="comment">copies of ImageMagick, and to permit persons to whom the ImageMagick is</span>
<a name="l02729"></a>02729 <span class="comment">furnished to do so, subject to the following conditions:</span>
<a name="l02730"></a>02730 <span class="comment"></span>
<a name="l02731"></a>02731 <span class="comment">The above copyright notice and this permission notice shall be included in all</span>
<a name="l02732"></a>02732 <span class="comment">copies or substantial portions of ImageMagick.</span>
<a name="l02733"></a>02733 <span class="comment"></span>
<a name="l02734"></a>02734 <span class="comment">The software is provided "as is", without warranty of any kind, express or</span>
<a name="l02735"></a>02735 <span class="comment">implied, including but not limited to the warranties of merchantability,</span>
<a name="l02736"></a>02736 <span class="comment">fitness for a particular purpose and noninfringement. In no event shall</span>
<a name="l02737"></a>02737 <span class="comment">ImageMagick Studio be liable for any claim, damages or other liability,</span>
<a name="l02738"></a>02738 <span class="comment">whether in an action of contract, tort or otherwise, arising from, out of or</span>
<a name="l02739"></a>02739 <span class="comment">in connection with ImageMagick or the use or other dealings in ImageMagick.</span>
<a name="l02740"></a>02740 <span class="comment"></span>
<a name="l02741"></a>02741 <span class="comment">Except as contained in this notice, the name of the ImageMagick Studio shall</span>
<a name="l02742"></a>02742 <span class="comment">not be used in advertising or otherwise to promote the sale, use or other</span>
<a name="l02743"></a>02743 <span class="comment">dealings in ImageMagick without prior written authorization from the</span>
<a name="l02744"></a>02744 <span class="comment">ImageMagick Studio.</span>
<a name="l02745"></a>02745 <span class="comment">*/</span>
<a name="l02746"></a>02746
<a name="l02747"></a><a class="code" href="classKImageEffect.html#aeeca3461274007499279ebc7628ff577">02747</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#aeeca3461274007499279ebc7628ff577" title="Scales an image using simple pixel sampling.">KImageEffect::sample</a>(<a class="codeRef" href="qimage.html">QImage</a> &src, <span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h)
<a name="l02748"></a>02748 {
<a name="l02749"></a>02749 <span class="keywordflow">if</span>(w == src.<a class="codeRef" href="qimage.html#width">width</a>() && h == src.<a class="codeRef" href="qimage.html#height">height</a>())
<a name="l02750"></a>02750 <span class="keywordflow">return</span>(src);
<a name="l02751"></a>02751
<a name="l02752"></a>02752 <span class="keywordtype">int</span> depth = src.<a class="codeRef" href="qimage.html#depth">depth</a>();
<a name="l02753"></a>02753 <a class="codeRef" href="qimage.html">QImage</a> dest(w, h, depth, depth <= 8 ? src.<a class="codeRef" href="qimage.html#numColors">numColors</a>() : 0,
<a name="l02754"></a>02754 depth == 1 ? QImage::LittleEndian : QImage::IgnoreEndian);
<a name="l02755"></a>02755 <span class="keywordtype">int</span> *x_offset = (<span class="keywordtype">int</span> *)malloc(w*<span class="keyword">sizeof</span>(<span class="keywordtype">int</span>));
<a name="l02756"></a>02756 <span class="keywordtype">int</span> *y_offset = (<span class="keywordtype">int</span> *)malloc(h*<span class="keyword">sizeof</span>(<span class="keywordtype">int</span>));
<a name="l02757"></a>02757 <span class="keywordflow">if</span>(!x_offset || !y_offset){
<a name="l02758"></a>02758 <span class="preprocessor">#ifndef NDEBUG</span>
<a name="l02759"></a>02759 <span class="preprocessor"></span> qWarning(<span class="stringliteral">"KImageEffect::sample(): Unable to allocate pixel buffer"</span>);
<a name="l02760"></a>02760 <span class="preprocessor">#endif</span>
<a name="l02761"></a>02761 <span class="preprocessor"></span> free(x_offset);
<a name="l02762"></a>02762 free(y_offset);
<a name="l02763"></a>02763 <span class="keywordflow">return</span>(src);
<a name="l02764"></a>02764 }
<a name="l02765"></a>02765
<a name="l02766"></a>02766 <span class="comment">// init pixel offsets</span>
<a name="l02767"></a>02767 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> x=0; x < w; ++x)
<a name="l02768"></a>02768 x_offset[x] = (<span class="keywordtype">int</span>)(x*src.<a class="codeRef" href="qimage.html#width">width</a>()/((double)w));
<a name="l02769"></a>02769 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> y=0; y < h; ++y)
<a name="l02770"></a>02770 y_offset[y] = (<span class="keywordtype">int</span>)(y*src.<a class="codeRef" href="qimage.html#height">height</a>()/((double)h));
<a name="l02771"></a>02771
<a name="l02772"></a>02772 <span class="keywordflow">if</span>(depth > 8){ <span class="comment">// DirectClass source image</span>
<a name="l02773"></a>02773 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> y=0; y < h; ++y){
<a name="l02774"></a>02774 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *destData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.scanLine(y);
<a name="l02775"></a>02775 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *srcData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)src.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y_offset[y]);
<a name="l02776"></a>02776 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> x=0; x < w; ++x)
<a name="l02777"></a>02777 destData[x] = srcData[x_offset[x]];
<a name="l02778"></a>02778 }
<a name="l02779"></a>02779 }
<a name="l02780"></a>02780 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(depth == 1) {
<a name="l02781"></a>02781 <span class="keywordtype">int</span> r = src.<a class="codeRef" href="qimage.html#bitOrder">bitOrder</a>() == QImage::LittleEndian;
<a name="l02782"></a>02782 memcpy(dest.colorTable(), src.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>(), src.<a class="codeRef" href="qimage.html#numColors">numColors</a>()*<span class="keyword">sizeof</span>(QRgb));
<a name="l02783"></a>02783 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> y=0; y < h; ++y){
<a name="l02784"></a>02784 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *destData = dest.scanLine(y);
<a name="l02785"></a>02785 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *srcData = src.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y_offset[y]);
<a name="l02786"></a>02786 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> x=0; x < w; ++x){
<a name="l02787"></a>02787 <span class="keywordtype">int</span> k = x_offset[x];
<a name="l02788"></a>02788 <span class="keywordtype">int</span> l = r ? (k & 7) : (7 - (k&7));
<a name="l02789"></a>02789 <span class="keywordflow">if</span>(srcData[k >> 3] & (1 << l))
<a name="l02790"></a>02790 destData[x >> 3] |= 1 << (x & 7);
<a name="l02791"></a>02791 <span class="keywordflow">else</span>
<a name="l02792"></a>02792 destData[x >> 3] &= ~(1 << (x & 7));
<a name="l02793"></a>02793 }
<a name="l02794"></a>02794 }
<a name="l02795"></a>02795 }
<a name="l02796"></a>02796 <span class="keywordflow">else</span>{ <span class="comment">// PseudoClass source image</span>
<a name="l02797"></a>02797 memcpy(dest.colorTable(), src.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>(), src.<a class="codeRef" href="qimage.html#numColors">numColors</a>()*<span class="keyword">sizeof</span>(QRgb));
<a name="l02798"></a>02798 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> y=0; y < h; ++y){
<a name="l02799"></a>02799 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *destData = dest.scanLine(y);
<a name="l02800"></a>02800 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *srcData = src.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y_offset[y]);
<a name="l02801"></a>02801 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> x=0; x < w; ++x)
<a name="l02802"></a>02802 destData[x] = srcData[x_offset[x]];
<a name="l02803"></a>02803 }
<a name="l02804"></a>02804 }
<a name="l02805"></a>02805 free(x_offset);
<a name="l02806"></a>02806 free(y_offset);
<a name="l02807"></a>02807 <span class="keywordflow">return</span>(dest);
<a name="l02808"></a>02808 }
<a name="l02809"></a>02809
<a name="l02810"></a><a class="code" href="classKImageEffect.html#a1accfe84c4fb7ef62c32850254e2d77e">02810</a> <span class="keywordtype">void</span> <a class="code" href="classKImageEffect.html#a1accfe84c4fb7ef62c32850254e2d77e" title="Thresholds the reference image.">KImageEffect::threshold</a>(<a class="codeRef" href="qimage.html">QImage</a> &img, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> threshold)
<a name="l02811"></a>02811 {
<a name="l02812"></a>02812 <span class="keywordtype">int</span> i, count;
<a name="l02813"></a>02813 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *data;
<a name="l02814"></a>02814 <span class="keywordflow">if</span>(img.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8){ <span class="comment">// DirectClass</span>
<a name="l02815"></a>02815 count = img.<a class="codeRef" href="qimage.html#width">width</a>()*img.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l02816"></a>02816 data = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)img.<a class="codeRef" href="qimage.html#bits">bits</a>();
<a name="l02817"></a>02817 }
<a name="l02818"></a>02818 <span class="keywordflow">else</span>{ <span class="comment">// PsudeoClass</span>
<a name="l02819"></a>02819 count = img.<a class="codeRef" href="qimage.html#numColors">numColors</a>();
<a name="l02820"></a>02820 data = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)img.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l02821"></a>02821 }
<a name="l02822"></a>02822 <span class="keywordflow">for</span>(i=0; i < count; ++i)
<a name="l02823"></a>02823 data[i] = intensityValue(data[i]) < threshold ? Qt::black.rgb() : Qt::white.rgb();
<a name="l02824"></a>02824 }
<a name="l02825"></a>02825
<a name="l02826"></a>02826 <span class="keywordtype">void</span> KImageEffect::hull(<span class="keyword">const</span> <span class="keywordtype">int</span> x_offset, <span class="keyword">const</span> <span class="keywordtype">int</span> y_offset,
<a name="l02827"></a>02827 <span class="keyword">const</span> <span class="keywordtype">int</span> polarity, <span class="keyword">const</span> <span class="keywordtype">int</span> columns,
<a name="l02828"></a>02828 <span class="keyword">const</span> <span class="keywordtype">int</span> rows,
<a name="l02829"></a>02829 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *f, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *g)
<a name="l02830"></a>02830 {
<a name="l02831"></a>02831 <span class="keywordtype">int</span> x, y;
<a name="l02832"></a>02832
<a name="l02833"></a>02833 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *p, *q, *r, *s;
<a name="l02834"></a>02834 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> v;
<a name="l02835"></a>02835 <span class="keywordflow">if</span>(f == NULL || g == NULL)
<a name="l02836"></a>02836 <span class="keywordflow">return</span>;
<a name="l02837"></a>02837 p=f+(columns+2);
<a name="l02838"></a>02838 q=g+(columns+2);
<a name="l02839"></a>02839 r=p+(y_offset*(columns+2)+x_offset);
<a name="l02840"></a>02840 <span class="keywordflow">for</span> (y=0; y < rows; y++){
<a name="l02841"></a>02841 p++;
<a name="l02842"></a>02842 q++;
<a name="l02843"></a>02843 r++;
<a name="l02844"></a>02844 <span class="keywordflow">if</span>(polarity > 0)
<a name="l02845"></a>02845 <span class="keywordflow">for</span> (x=0; x < columns; x++){
<a name="l02846"></a>02846 v=(*p);
<a name="l02847"></a>02847 <span class="keywordflow">if</span> (*r > v)
<a name="l02848"></a>02848 v++;
<a name="l02849"></a>02849 *q=v;
<a name="l02850"></a>02850 p++;
<a name="l02851"></a>02851 q++;
<a name="l02852"></a>02852 r++;
<a name="l02853"></a>02853 }
<a name="l02854"></a>02854 <span class="keywordflow">else</span>
<a name="l02855"></a>02855 <span class="keywordflow">for</span>(x=0; x < columns; x++){
<a name="l02856"></a>02856 v=(*p);
<a name="l02857"></a>02857 <span class="keywordflow">if</span> (v > (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>) (*r+1))
<a name="l02858"></a>02858 v--;
<a name="l02859"></a>02859 *q=v;
<a name="l02860"></a>02860 p++;
<a name="l02861"></a>02861 q++;
<a name="l02862"></a>02862 r++;
<a name="l02863"></a>02863 }
<a name="l02864"></a>02864 p++;
<a name="l02865"></a>02865 q++;
<a name="l02866"></a>02866 r++;
<a name="l02867"></a>02867 }
<a name="l02868"></a>02868 p=f+(columns+2);
<a name="l02869"></a>02869 q=g+(columns+2);
<a name="l02870"></a>02870 r=q+(y_offset*(columns+2)+x_offset);
<a name="l02871"></a>02871 s=q-(y_offset*(columns+2)+x_offset);
<a name="l02872"></a>02872 <span class="keywordflow">for</span>(y=0; y < rows; y++){
<a name="l02873"></a>02873 p++;
<a name="l02874"></a>02874 q++;
<a name="l02875"></a>02875 r++;
<a name="l02876"></a>02876 s++;
<a name="l02877"></a>02877 <span class="keywordflow">if</span>(polarity > 0)
<a name="l02878"></a>02878 <span class="keywordflow">for</span>(x=0; x < (int) columns; x++){
<a name="l02879"></a>02879 v=(*q);
<a name="l02880"></a>02880 <span class="keywordflow">if</span> (((<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>) (*s+1) > v) && (*r > v))
<a name="l02881"></a>02881 v++;
<a name="l02882"></a>02882 *p=v;
<a name="l02883"></a>02883 p++;
<a name="l02884"></a>02884 q++;
<a name="l02885"></a>02885 r++;
<a name="l02886"></a>02886 s++;
<a name="l02887"></a>02887 }
<a name="l02888"></a>02888 <span class="keywordflow">else</span>
<a name="l02889"></a>02889 <span class="keywordflow">for</span> (x=0; x < columns; x++){
<a name="l02890"></a>02890 v=(*q);
<a name="l02891"></a>02891 <span class="keywordflow">if</span> (((<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>) (*s+1) < v) && (*r < v))
<a name="l02892"></a>02892 v--;
<a name="l02893"></a>02893 *p=v;
<a name="l02894"></a>02894 p++;
<a name="l02895"></a>02895 q++;
<a name="l02896"></a>02896 r++;
<a name="l02897"></a>02897 s++;
<a name="l02898"></a>02898 }
<a name="l02899"></a>02899 p++;
<a name="l02900"></a>02900 q++;
<a name="l02901"></a>02901 r++;
<a name="l02902"></a>02902 s++;
<a name="l02903"></a>02903 }
<a name="l02904"></a>02904 }
<a name="l02905"></a>02905
<a name="l02906"></a><a class="code" href="classKImageEffect.html#abc9cf778e9aa92c5ac39394e8c158613">02906</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#abc9cf778e9aa92c5ac39394e8c158613" title="Minimizes speckle noise in the source image using the 8 hull algorithm.">KImageEffect::despeckle</a>(<a class="codeRef" href="qimage.html">QImage</a> &src)
<a name="l02907"></a>02907 {
<a name="l02908"></a>02908 <span class="keywordtype">int</span> i, j, x, y;
<a name="l02909"></a>02909 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *blue_channel, *red_channel, *green_channel, *buffer,
<a name="l02910"></a>02910 *alpha_channel;
<a name="l02911"></a>02911 <span class="keywordtype">int</span> packets;
<a name="l02912"></a>02912 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span>
<a name="l02913"></a>02913 X[4]= {0, 1, 1,-1},
<a name="l02914"></a>02914 Y[4]= {1, 0, 1, 1};
<a name="l02915"></a>02915
<a name="l02916"></a>02916 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *destData;
<a name="l02917"></a>02917 <a class="codeRef" href="qimage.html">QImage</a> dest(src.<a class="codeRef" href="qimage.html#width">width</a>(), src.<a class="codeRef" href="qimage.html#height">height</a>(), 32);
<a name="l02918"></a>02918
<a name="l02919"></a>02919 packets = (src.<a class="codeRef" href="qimage.html#width">width</a>()+2)*(src.<a class="codeRef" href="qimage.html#height">height</a>()+2);
<a name="l02920"></a>02920 red_channel = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)calloc(packets, <span class="keyword">sizeof</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>));
<a name="l02921"></a>02921 green_channel = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)calloc(packets, <span class="keyword">sizeof</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>));
<a name="l02922"></a>02922 blue_channel = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)calloc(packets, <span class="keyword">sizeof</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>));
<a name="l02923"></a>02923 alpha_channel = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)calloc(packets, <span class="keyword">sizeof</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>));
<a name="l02924"></a>02924 buffer = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)calloc(packets, <span class="keyword">sizeof</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>));
<a name="l02925"></a>02925 <span class="keywordflow">if</span>(!red_channel || ! green_channel || ! blue_channel || ! alpha_channel ||
<a name="l02926"></a>02926 !buffer){
<a name="l02927"></a>02927 free(red_channel);
<a name="l02928"></a>02928 free(green_channel);
<a name="l02929"></a>02929 free(blue_channel);
<a name="l02930"></a>02930 free(alpha_channel);
<a name="l02931"></a>02931 free(buffer);
<a name="l02932"></a>02932 <span class="keywordflow">return</span>(src);
<a name="l02933"></a>02933 }
<a name="l02934"></a>02934
<a name="l02935"></a>02935 <span class="comment">// copy image pixels to color component buffers</span>
<a name="l02936"></a>02936 j = src.<a class="codeRef" href="qimage.html#width">width</a>()+2;
<a name="l02937"></a>02937 <span class="keywordflow">if</span>(src.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8){ <span class="comment">// DirectClass source image</span>
<a name="l02938"></a>02938 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *srcData;
<a name="l02939"></a>02939 <span class="keywordflow">for</span>(y=0; y < src.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l02940"></a>02940 srcData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)src.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l02941"></a>02941 ++j;
<a name="l02942"></a>02942 <span class="keywordflow">for</span>(x=0; x < src.<a class="codeRef" href="qimage.html#width">width</a>(); ++x){
<a name="l02943"></a>02943 red_channel[j] = qRed(srcData[x]);
<a name="l02944"></a>02944 green_channel[j] = qGreen(srcData[x]);
<a name="l02945"></a>02945 blue_channel[j] = qBlue(srcData[x]);
<a name="l02946"></a>02946 alpha_channel[j] = qAlpha(srcData[x]);
<a name="l02947"></a>02947 ++j;
<a name="l02948"></a>02948 }
<a name="l02949"></a>02949 ++j;
<a name="l02950"></a>02950 }
<a name="l02951"></a>02951 }
<a name="l02952"></a>02952 <span class="keywordflow">else</span>{ <span class="comment">// PsudeoClass source image</span>
<a name="l02953"></a>02953 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *srcData;
<a name="l02954"></a>02954 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *cTable = src.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l02955"></a>02955 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> pixel;
<a name="l02956"></a>02956 <span class="keywordflow">for</span>(y=0; y < src.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l02957"></a>02957 srcData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)src.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l02958"></a>02958 ++j;
<a name="l02959"></a>02959 <span class="keywordflow">for</span>(x=0; x < src.<a class="codeRef" href="qimage.html#width">width</a>(); ++x){
<a name="l02960"></a>02960 pixel = *(cTable+srcData[x]);
<a name="l02961"></a>02961 red_channel[j] = qRed(pixel);
<a name="l02962"></a>02962 green_channel[j] = qGreen(pixel);
<a name="l02963"></a>02963 blue_channel[j] = qBlue(pixel);
<a name="l02964"></a>02964 alpha_channel[j] = qAlpha(pixel);
<a name="l02965"></a>02965 ++j;
<a name="l02966"></a>02966 }
<a name="l02967"></a>02967 ++j;
<a name="l02968"></a>02968 }
<a name="l02969"></a>02969 }
<a name="l02970"></a>02970 <span class="comment">// reduce speckle in red channel</span>
<a name="l02971"></a>02971 <span class="keywordflow">for</span>(i=0; i < 4; i++){
<a name="l02972"></a>02972 hull(X[i],Y[i],1,src.<a class="codeRef" href="qimage.html#width">width</a>(),src.<a class="codeRef" href="qimage.html#height">height</a>(),red_channel,buffer);
<a name="l02973"></a>02973 hull(-X[i],-Y[i],1,src.<a class="codeRef" href="qimage.html#width">width</a>(),src.<a class="codeRef" href="qimage.html#height">height</a>(),red_channel,buffer);
<a name="l02974"></a>02974 hull(-X[i],-Y[i],-1,src.<a class="codeRef" href="qimage.html#width">width</a>(),src.<a class="codeRef" href="qimage.html#height">height</a>(),red_channel,buffer);
<a name="l02975"></a>02975 hull(X[i],Y[i],-1,src.<a class="codeRef" href="qimage.html#width">width</a>(),src.<a class="codeRef" href="qimage.html#height">height</a>(),red_channel,buffer);
<a name="l02976"></a>02976 }
<a name="l02977"></a>02977 <span class="comment">// reduce speckle in green channel</span>
<a name="l02978"></a>02978 <span class="keywordflow">for</span> (i=0; i < packets; i++)
<a name="l02979"></a>02979 buffer[i]=0;
<a name="l02980"></a>02980 <span class="keywordflow">for</span> (i=0; i < 4; i++){
<a name="l02981"></a>02981 hull(X[i],Y[i],1,src.<a class="codeRef" href="qimage.html#width">width</a>(),src.<a class="codeRef" href="qimage.html#height">height</a>(),green_channel,buffer);
<a name="l02982"></a>02982 hull(-X[i],-Y[i],1,src.<a class="codeRef" href="qimage.html#width">width</a>(),src.<a class="codeRef" href="qimage.html#height">height</a>(),green_channel,buffer);
<a name="l02983"></a>02983 hull(-X[i],-Y[i],-1,src.<a class="codeRef" href="qimage.html#width">width</a>(),src.<a class="codeRef" href="qimage.html#height">height</a>(),green_channel,buffer);
<a name="l02984"></a>02984 hull(X[i],Y[i],-1,src.<a class="codeRef" href="qimage.html#width">width</a>(),src.<a class="codeRef" href="qimage.html#height">height</a>(),green_channel,buffer);
<a name="l02985"></a>02985 }
<a name="l02986"></a>02986 <span class="comment">// reduce speckle in blue channel</span>
<a name="l02987"></a>02987 <span class="keywordflow">for</span> (i=0; i < packets; i++)
<a name="l02988"></a>02988 buffer[i]=0;
<a name="l02989"></a>02989 <span class="keywordflow">for</span> (i=0; i < 4; i++){
<a name="l02990"></a>02990 hull(X[i],Y[i],1,src.<a class="codeRef" href="qimage.html#width">width</a>(),src.<a class="codeRef" href="qimage.html#height">height</a>(),blue_channel,buffer);
<a name="l02991"></a>02991 hull(-X[i],-Y[i],1,src.<a class="codeRef" href="qimage.html#width">width</a>(),src.<a class="codeRef" href="qimage.html#height">height</a>(),blue_channel,buffer);
<a name="l02992"></a>02992 hull(-X[i],-Y[i],-1,src.<a class="codeRef" href="qimage.html#width">width</a>(),src.<a class="codeRef" href="qimage.html#height">height</a>(),blue_channel,buffer);
<a name="l02993"></a>02993 hull(X[i],Y[i],-1,src.<a class="codeRef" href="qimage.html#width">width</a>(),src.<a class="codeRef" href="qimage.html#height">height</a>(),blue_channel,buffer);
<a name="l02994"></a>02994 }
<a name="l02995"></a>02995 <span class="comment">// copy color component buffers to despeckled image</span>
<a name="l02996"></a>02996 j = dest.width()+2;
<a name="l02997"></a>02997 <span class="keywordflow">for</span>(y=0; y < dest.height(); ++y)
<a name="l02998"></a>02998 {
<a name="l02999"></a>02999 destData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.scanLine(y);
<a name="l03000"></a>03000 ++j;
<a name="l03001"></a>03001 <span class="keywordflow">for</span> (x=0; x < dest.width(); ++x)
<a name="l03002"></a>03002 {
<a name="l03003"></a>03003 destData[x] = qRgba(red_channel[j], green_channel[j],
<a name="l03004"></a>03004 blue_channel[j], alpha_channel[j]);
<a name="l03005"></a>03005 ++j;
<a name="l03006"></a>03006 }
<a name="l03007"></a>03007 ++j;
<a name="l03008"></a>03008 }
<a name="l03009"></a>03009 free(buffer);
<a name="l03010"></a>03010 free(red_channel);
<a name="l03011"></a>03011 free(green_channel);
<a name="l03012"></a>03012 free(blue_channel);
<a name="l03013"></a>03013 free(alpha_channel);
<a name="l03014"></a>03014 <span class="keywordflow">return</span>(dest);
<a name="l03015"></a>03015 }
<a name="l03016"></a>03016
<a name="l03017"></a>03017 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> KImageEffect::generateNoise(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> pixel,
<a name="l03018"></a>03018 NoiseType noise_type)
<a name="l03019"></a>03019 {
<a name="l03020"></a>03020 <span class="preprocessor">#define NoiseEpsilon 1.0e-5</span>
<a name="l03021"></a>03021 <span class="preprocessor"></span><span class="preprocessor">#define NoiseMask 0x7fff</span>
<a name="l03022"></a>03022 <span class="preprocessor"></span><span class="preprocessor">#define SigmaUniform 4.0</span>
<a name="l03023"></a>03023 <span class="preprocessor"></span><span class="preprocessor">#define SigmaGaussian 4.0</span>
<a name="l03024"></a>03024 <span class="preprocessor"></span><span class="preprocessor">#define SigmaImpulse 0.10</span>
<a name="l03025"></a>03025 <span class="preprocessor"></span><span class="preprocessor">#define SigmaLaplacian 10.0</span>
<a name="l03026"></a>03026 <span class="preprocessor"></span><span class="preprocessor">#define SigmaMultiplicativeGaussian 0.5</span>
<a name="l03027"></a>03027 <span class="preprocessor"></span><span class="preprocessor">#define SigmaPoisson 0.05</span>
<a name="l03028"></a>03028 <span class="preprocessor"></span><span class="preprocessor">#define TauGaussian 20.0</span>
<a name="l03029"></a>03029 <span class="preprocessor"></span>
<a name="l03030"></a>03030 <span class="keywordtype">double</span> alpha, beta, sigma, value;
<a name="l03031"></a>03031 alpha=(double) (rand() & NoiseMask)/NoiseMask;
<a name="l03032"></a>03032 <span class="keywordflow">if</span> (alpha == 0.0)
<a name="l03033"></a>03033 alpha=1.0;
<a name="l03034"></a>03034 <span class="keywordflow">switch</span>(noise_type){
<a name="l03035"></a>03035 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a17bb51948809b1e9b84a30b8393b847dac3887da38d11032687fb43469afed1a0" title="Uniform distribution.">UniformNoise</a>:
<a name="l03036"></a>03036 <span class="keywordflow">default</span>:
<a name="l03037"></a>03037 {
<a name="l03038"></a>03038 value=(double) pixel+SigmaUniform*(alpha-0.5);
<a name="l03039"></a>03039 <span class="keywordflow">break</span>;
<a name="l03040"></a>03040 }
<a name="l03041"></a>03041 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a17bb51948809b1e9b84a30b8393b847da0c41513e69a022a61710c8877a792910" title="Gaussian distribution.">GaussianNoise</a>:
<a name="l03042"></a>03042 {
<a name="l03043"></a>03043 <span class="keywordtype">double</span> tau;
<a name="l03044"></a>03044
<a name="l03045"></a>03045 beta=(double) (rand() & NoiseMask)/NoiseMask;
<a name="l03046"></a>03046 sigma=sqrt(-2.0*log(alpha))*cos(2.0*M_PI*beta);
<a name="l03047"></a>03047 tau=sqrt(-2.0*log(alpha))*sin(2.0*M_PI*beta);
<a name="l03048"></a>03048 value=(double) pixel+
<a name="l03049"></a>03049 (sqrt((<span class="keywordtype">double</span>) pixel)*SigmaGaussian*sigma)+(TauGaussian*tau);
<a name="l03050"></a>03050 <span class="keywordflow">break</span>;
<a name="l03051"></a>03051 }
<a name="l03052"></a>03052 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a17bb51948809b1e9b84a30b8393b847da3453c3b4f4bdeca1839f43b95c224edb" title="Multiplicative Gaussian distribution.">MultiplicativeGaussianNoise</a>:
<a name="l03053"></a>03053 {
<a name="l03054"></a>03054 <span class="keywordflow">if</span> (alpha <= NoiseEpsilon)
<a name="l03055"></a>03055 sigma=MaxRGB;
<a name="l03056"></a>03056 <span class="keywordflow">else</span>
<a name="l03057"></a>03057 sigma=sqrt(-2.0*log(alpha));
<a name="l03058"></a>03058 beta=(rand() & NoiseMask)/NoiseMask;
<a name="l03059"></a>03059 value=(double) pixel+
<a name="l03060"></a>03060 pixel*SigmaMultiplicativeGaussian*sigma*cos(2.0*M_PI*beta);
<a name="l03061"></a>03061 <span class="keywordflow">break</span>;
<a name="l03062"></a>03062 }
<a name="l03063"></a>03063 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a17bb51948809b1e9b84a30b8393b847da5b044265fa519e87792d3452011a9f11" title="Impulse distribution.">ImpulseNoise</a>:
<a name="l03064"></a>03064 {
<a name="l03065"></a>03065 <span class="keywordflow">if</span> (alpha < (SigmaImpulse/2.0))
<a name="l03066"></a>03066 value=0;
<a name="l03067"></a>03067 <span class="keywordflow">else</span>
<a name="l03068"></a>03068 <span class="keywordflow">if</span> (alpha >= (1.0-(SigmaImpulse/2.0)))
<a name="l03069"></a>03069 value=MaxRGB;
<a name="l03070"></a>03070 <span class="keywordflow">else</span>
<a name="l03071"></a>03071 value=pixel;
<a name="l03072"></a>03072 <span class="keywordflow">break</span>;
<a name="l03073"></a>03073 }
<a name="l03074"></a>03074 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a17bb51948809b1e9b84a30b8393b847daf60fd2a5751a9bb594d87a6bf5b49afe" title="Laplacian distribution.">LaplacianNoise</a>:
<a name="l03075"></a>03075 {
<a name="l03076"></a>03076 <span class="keywordflow">if</span> (alpha <= 0.5)
<a name="l03077"></a>03077 {
<a name="l03078"></a>03078 <span class="keywordflow">if</span> (alpha <= NoiseEpsilon)
<a name="l03079"></a>03079 value=(double) pixel-MaxRGB;
<a name="l03080"></a>03080 <span class="keywordflow">else</span>
<a name="l03081"></a>03081 value=(double) pixel+SigmaLaplacian*log(2.0*alpha);
<a name="l03082"></a>03082 <span class="keywordflow">break</span>;
<a name="l03083"></a>03083 }
<a name="l03084"></a>03084 beta=1.0-alpha;
<a name="l03085"></a>03085 <span class="keywordflow">if</span> (beta <= (0.5*NoiseEpsilon))
<a name="l03086"></a>03086 value=(<span class="keywordtype">double</span>) pixel+MaxRGB;
<a name="l03087"></a>03087 <span class="keywordflow">else</span>
<a name="l03088"></a>03088 value=(double) pixel-SigmaLaplacian*log(2.0*beta);
<a name="l03089"></a>03089 <span class="keywordflow">break</span>;
<a name="l03090"></a>03090 }
<a name="l03091"></a>03091 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a17bb51948809b1e9b84a30b8393b847da89da8748b00fdfa9ad987a7e3178ae6c" title="Poisson distribution.">PoissonNoise</a>:
<a name="l03092"></a>03092 {
<a name="l03093"></a>03093 <span class="keyword">register</span> <span class="keywordtype">int</span>
<a name="l03094"></a>03094 i;
<a name="l03095"></a>03095
<a name="l03096"></a>03096 <span class="keywordflow">for</span> (i=0; alpha > exp(-SigmaPoisson*pixel); i++)
<a name="l03097"></a>03097 {
<a name="l03098"></a>03098 beta=(double) (rand() & NoiseMask)/NoiseMask;
<a name="l03099"></a>03099 alpha=alpha*beta;
<a name="l03100"></a>03100 }
<a name="l03101"></a>03101 value=i/SigmaPoisson;
<a name="l03102"></a>03102 <span class="keywordflow">break</span>;
<a name="l03103"></a>03103 }
<a name="l03104"></a>03104 }
<a name="l03105"></a>03105 <span class="keywordflow">if</span>(value < 0.0)
<a name="l03106"></a>03106 <span class="keywordflow">return</span>(0);
<a name="l03107"></a>03107 <span class="keywordflow">if</span>(value > MaxRGB)
<a name="l03108"></a>03108 <span class="keywordflow">return</span>(MaxRGB);
<a name="l03109"></a>03109 <span class="keywordflow">return</span>((<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>) (value+0.5));
<a name="l03110"></a>03110 }
<a name="l03111"></a>03111
<a name="l03112"></a><a class="code" href="classKImageEffect.html#a22e9b6f51975e0bf1dc627135e3e3c59">03112</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#a22e9b6f51975e0bf1dc627135e3e3c59" title="Adds noise to an image.">KImageEffect::addNoise</a>(<a class="codeRef" href="qimage.html">QImage</a> &src, <a class="code" href="classKImageEffect.html#a17bb51948809b1e9b84a30b8393b847d" title="This enum provides a noise type specification.">NoiseType</a> noise_type)
<a name="l03113"></a>03113 {
<a name="l03114"></a>03114 <span class="keywordtype">int</span> x, y;
<a name="l03115"></a>03115 <a class="codeRef" href="qimage.html">QImage</a> dest(src.<a class="codeRef" href="qimage.html#width">width</a>(), src.<a class="codeRef" href="qimage.html#height">height</a>(), 32);
<a name="l03116"></a>03116 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *destData;
<a name="l03117"></a>03117
<a name="l03118"></a>03118 <span class="keywordflow">if</span>(src.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8){ <span class="comment">// DirectClass source image</span>
<a name="l03119"></a>03119 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *srcData;
<a name="l03120"></a>03120 <span class="keywordflow">for</span>(y=0; y < src.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l03121"></a>03121 srcData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)src.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03122"></a>03122 destData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.scanLine(y);
<a name="l03123"></a>03123 <span class="keywordflow">for</span>(x=0; x < src.<a class="codeRef" href="qimage.html#width">width</a>(); ++x){
<a name="l03124"></a>03124 destData[x] = qRgba(generateNoise(qRed(srcData[x]), noise_type),
<a name="l03125"></a>03125 generateNoise(qGreen(srcData[x]), noise_type),
<a name="l03126"></a>03126 generateNoise(qBlue(srcData[x]), noise_type),
<a name="l03127"></a>03127 qAlpha(srcData[x]));
<a name="l03128"></a>03128 }
<a name="l03129"></a>03129 }
<a name="l03130"></a>03130 }
<a name="l03131"></a>03131 <span class="keywordflow">else</span>{ <span class="comment">// PsudeoClass source image</span>
<a name="l03132"></a>03132 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *srcData;
<a name="l03133"></a>03133 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *cTable = src.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l03134"></a>03134 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> pixel;
<a name="l03135"></a>03135 <span class="keywordflow">for</span>(y=0; y < src.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l03136"></a>03136 srcData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)src.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03137"></a>03137 destData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.scanLine(y);
<a name="l03138"></a>03138 <span class="keywordflow">for</span>(x=0; x < src.<a class="codeRef" href="qimage.html#width">width</a>(); ++x){
<a name="l03139"></a>03139 pixel = *(cTable+srcData[x]);
<a name="l03140"></a>03140 destData[x] = qRgba(generateNoise(qRed(pixel), noise_type),
<a name="l03141"></a>03141 generateNoise(qGreen(pixel), noise_type),
<a name="l03142"></a>03142 generateNoise(qBlue(pixel), noise_type),
<a name="l03143"></a>03143 qAlpha(pixel));
<a name="l03144"></a>03144 }
<a name="l03145"></a>03145 }
<a name="l03146"></a>03146
<a name="l03147"></a>03147 }
<a name="l03148"></a>03148 <span class="keywordflow">return</span>(dest);
<a name="l03149"></a>03149 }
<a name="l03150"></a>03150
<a name="l03151"></a>03151 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> KImageEffect::interpolateColor(<a class="codeRef" href="qimage.html">QImage</a> *image, <span class="keywordtype">double</span> x_offset,
<a name="l03152"></a>03152 <span class="keywordtype">double</span> y_offset,
<a name="l03153"></a>03153 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> background)
<a name="l03154"></a>03154 {
<a name="l03155"></a>03155 <span class="keywordtype">double</span> alpha, beta;
<a name="l03156"></a>03156 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> p, q, r, s;
<a name="l03157"></a>03157 <span class="keywordtype">int</span> x, y;
<a name="l03158"></a>03158
<a name="l03159"></a>03159 x = (int)x_offset;
<a name="l03160"></a>03160 y = (int)y_offset;
<a name="l03161"></a>03161 <span class="keywordflow">if</span>((x < -1) || (x >= image-><a class="codeRef" href="qimage.html#width">width</a>()) || (y < -1) || (y >= image-><a class="codeRef" href="qimage.html#height">height</a>()))
<a name="l03162"></a>03162 <span class="keywordflow">return</span>(background);
<a name="l03163"></a>03163 <span class="keywordflow">if</span>(image-><a class="codeRef" href="qimage.html#depth">depth</a>() > 8){
<a name="l03164"></a>03164 <span class="keywordflow">if</span>((x >= 0) && (y >= 0) && (x < (image-><a class="codeRef" href="qimage.html#width">width</a>()-1)) && (y < (image-><a class="codeRef" href="qimage.html#height">height</a>()-1))) {
<a name="l03165"></a>03165 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *t = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image-><a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03166"></a>03166 p = t[x];
<a name="l03167"></a>03167 q = t[x+1];
<a name="l03168"></a>03168 r = t[x+image-><a class="codeRef" href="qimage.html#width">width</a>()];
<a name="l03169"></a>03169 s = t[x+image-><a class="codeRef" href="qimage.html#width">width</a>()+1];
<a name="l03170"></a>03170 }
<a name="l03171"></a>03171 <span class="keywordflow">else</span>{
<a name="l03172"></a>03172 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *t = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image-><a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03173"></a>03173 p = background;
<a name="l03174"></a>03174 <span class="keywordflow">if</span>((x >= 0) && (y >= 0)){
<a name="l03175"></a>03175 p = t[x];
<a name="l03176"></a>03176 }
<a name="l03177"></a>03177 q = background;
<a name="l03178"></a>03178 <span class="keywordflow">if</span>(((x+1) < image-><a class="codeRef" href="qimage.html#width">width</a>()) && (y >= 0)){
<a name="l03179"></a>03179 q = t[x+1];
<a name="l03180"></a>03180 }
<a name="l03181"></a>03181 r = background;
<a name="l03182"></a>03182 <span class="keywordflow">if</span>((x >= 0) && ((y+1) < image-><a class="codeRef" href="qimage.html#height">height</a>())){
<a name="l03183"></a>03183 t = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image-><a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y+1);
<a name="l03184"></a>03184 r = t[x+image-><a class="codeRef" href="qimage.html#width">width</a>()];
<a name="l03185"></a>03185 }
<a name="l03186"></a>03186 s = background;
<a name="l03187"></a>03187 <span class="keywordflow">if</span>(((x+1) < image-><a class="codeRef" href="qimage.html#width">width</a>()) && ((y+1) < image-><a class="codeRef" href="qimage.html#height">height</a>())){
<a name="l03188"></a>03188 t = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image-><a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y+1);
<a name="l03189"></a>03189 s = t[x+image-><a class="codeRef" href="qimage.html#width">width</a>()+1];
<a name="l03190"></a>03190 }
<a name="l03191"></a>03191
<a name="l03192"></a>03192 }
<a name="l03193"></a>03193 }
<a name="l03194"></a>03194 <span class="keywordflow">else</span>{
<a name="l03195"></a>03195 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *colorTable = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image-><a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l03196"></a>03196 <span class="keywordflow">if</span>((x >= 0) && (y >= 0) && (x < (image-><a class="codeRef" href="qimage.html#width">width</a>()-1)) && (y < (image-><a class="codeRef" href="qimage.html#height">height</a>()-1))) {
<a name="l03197"></a>03197 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *t;
<a name="l03198"></a>03198 t = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)image-><a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03199"></a>03199 p = *(colorTable+t[x]);
<a name="l03200"></a>03200 q = *(colorTable+t[x+1]);
<a name="l03201"></a>03201 t = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)image-><a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y+1);
<a name="l03202"></a>03202 r = *(colorTable+t[x]);
<a name="l03203"></a>03203 s = *(colorTable+t[x+1]);
<a name="l03204"></a>03204 }
<a name="l03205"></a>03205 <span class="keywordflow">else</span>{
<a name="l03206"></a>03206 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *t;
<a name="l03207"></a>03207 p = background;
<a name="l03208"></a>03208 <span class="keywordflow">if</span>((x >= 0) && (y >= 0)){
<a name="l03209"></a>03209 t = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)image-><a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03210"></a>03210 p = *(colorTable+t[x]);
<a name="l03211"></a>03211 }
<a name="l03212"></a>03212 q = background;
<a name="l03213"></a>03213 <span class="keywordflow">if</span>(((x+1) < image-><a class="codeRef" href="qimage.html#width">width</a>()) && (y >= 0)){
<a name="l03214"></a>03214 t = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)image-><a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03215"></a>03215 q = *(colorTable+t[x+1]);
<a name="l03216"></a>03216 }
<a name="l03217"></a>03217 r = background;
<a name="l03218"></a>03218 <span class="keywordflow">if</span>((x >= 0) && ((y+1) < image-><a class="codeRef" href="qimage.html#height">height</a>())){
<a name="l03219"></a>03219 t = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)image-><a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y+1);
<a name="l03220"></a>03220 r = *(colorTable+t[x]);
<a name="l03221"></a>03221 }
<a name="l03222"></a>03222 s = background;
<a name="l03223"></a>03223 <span class="keywordflow">if</span>(((x+1) < image-><a class="codeRef" href="qimage.html#width">width</a>()) && ((y+1) < image-><a class="codeRef" href="qimage.html#height">height</a>())){
<a name="l03224"></a>03224 t = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)image-><a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y+1);
<a name="l03225"></a>03225 s = *(colorTable+t[x+1]);
<a name="l03226"></a>03226 }
<a name="l03227"></a>03227
<a name="l03228"></a>03228 }
<a name="l03229"></a>03229
<a name="l03230"></a>03230 }
<a name="l03231"></a>03231 x_offset -= floor(x_offset);
<a name="l03232"></a>03232 y_offset -= floor(y_offset);
<a name="l03233"></a>03233 alpha = 1.0-x_offset;
<a name="l03234"></a>03234 beta = 1.0-y_offset;
<a name="l03235"></a>03235
<a name="l03236"></a>03236 <span class="keywordflow">return</span>(qRgba((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(beta*(alpha*qRed(p)+x_offset*qRed(q))+y_offset*(alpha*qRed(r)+x_offset*qRed(s))),
<a name="l03237"></a>03237 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(beta*(alpha*qGreen(p)+x_offset*qGreen(q))+y_offset*(alpha*qGreen(r)+x_offset*qGreen(s))),
<a name="l03238"></a>03238 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(beta*(alpha*qBlue(p)+x_offset*qBlue(q))+y_offset*(alpha*qBlue(r)+x_offset*qBlue(s))),
<a name="l03239"></a>03239 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(beta*(alpha*qAlpha(p)+x_offset*qAlpha(q))+y_offset*(alpha*qAlpha(r)+x_offset*qAlpha(s)))));
<a name="l03240"></a>03240 }
<a name="l03241"></a>03241
<a name="l03242"></a><a class="code" href="classKImageEffect.html#a5b4f28eec6c1b2e84ad499d1ce5fde65">03242</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#a5b4f28eec6c1b2e84ad499d1ce5fde65" title="Implodes an image by a specified percent.">KImageEffect::implode</a>(<a class="codeRef" href="qimage.html">QImage</a> &src, <span class="keywordtype">double</span> factor,
<a name="l03243"></a>03243 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> background)
<a name="l03244"></a>03244 {
<a name="l03245"></a>03245 <span class="keywordtype">double</span> amount, distance, radius;
<a name="l03246"></a>03246 <span class="keywordtype">double</span> x_center, x_distance, x_scale;
<a name="l03247"></a>03247 <span class="keywordtype">double</span> y_center, y_distance, y_scale;
<a name="l03248"></a>03248 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *destData;
<a name="l03249"></a>03249 <span class="keywordtype">int</span> x, y;
<a name="l03250"></a>03250
<a name="l03251"></a>03251 <a class="codeRef" href="qimage.html">QImage</a> dest(src.<a class="codeRef" href="qimage.html#width">width</a>(), src.<a class="codeRef" href="qimage.html#height">height</a>(), 32);
<a name="l03252"></a>03252
<a name="l03253"></a>03253 <span class="comment">// compute scaling factor</span>
<a name="l03254"></a>03254 x_scale = 1.0;
<a name="l03255"></a>03255 y_scale = 1.0;
<a name="l03256"></a>03256 x_center = (double)0.5*src.<a class="codeRef" href="qimage.html#width">width</a>();
<a name="l03257"></a>03257 y_center = (double)0.5*src.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l03258"></a>03258 radius=x_center;
<a name="l03259"></a>03259 <span class="keywordflow">if</span>(src.<a class="codeRef" href="qimage.html#width">width</a>() > src.<a class="codeRef" href="qimage.html#height">height</a>())
<a name="l03260"></a>03260 y_scale = (<span class="keywordtype">double</span>)src.<a class="codeRef" href="qimage.html#width">width</a>()/src.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l03261"></a>03261 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(src.<a class="codeRef" href="qimage.html#width">width</a>() < src.<a class="codeRef" href="qimage.html#height">height</a>()){
<a name="l03262"></a>03262 x_scale = (double) src.<a class="codeRef" href="qimage.html#height">height</a>()/src.<a class="codeRef" href="qimage.html#width">width</a>();
<a name="l03263"></a>03263 radius = y_center;
<a name="l03264"></a>03264 }
<a name="l03265"></a>03265 amount=factor/10.0;
<a name="l03266"></a>03266 <span class="keywordflow">if</span>(amount >= 0)
<a name="l03267"></a>03267 amount/=10.0;
<a name="l03268"></a>03268 <span class="keywordflow">if</span>(src.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8){ <span class="comment">// DirectClass source image</span>
<a name="l03269"></a>03269 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *srcData;
<a name="l03270"></a>03270 <span class="keywordflow">for</span>(y=0; y < src.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l03271"></a>03271 srcData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)src.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03272"></a>03272 destData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.scanLine(y);
<a name="l03273"></a>03273 y_distance=y_scale*(y-y_center);
<a name="l03274"></a>03274 <span class="keywordflow">for</span>(x=0; x < src.<a class="codeRef" href="qimage.html#width">width</a>(); ++x){
<a name="l03275"></a>03275 destData[x] = srcData[x];
<a name="l03276"></a>03276 x_distance = x_scale*(x-x_center);
<a name="l03277"></a>03277 distance= x_distance*x_distance+y_distance*y_distance;
<a name="l03278"></a>03278 <span class="keywordflow">if</span>(distance < (radius*radius)){
<a name="l03279"></a>03279 <span class="keywordtype">double</span> factor;
<a name="l03280"></a>03280 <span class="comment">// Implode the pixel.</span>
<a name="l03281"></a>03281 factor=1.0;
<a name="l03282"></a>03282 <span class="keywordflow">if</span>(distance > 0.0)
<a name="l03283"></a>03283 factor=
<a name="l03284"></a>03284 pow(sin(0.5000000000000001*M_PI*sqrt(distance)/radius),-amount);
<a name="l03285"></a>03285 destData[x] = interpolateColor(&src, factor*x_distance/x_scale+x_center,
<a name="l03286"></a>03286 factor*y_distance/y_scale+y_center,
<a name="l03287"></a>03287 background);
<a name="l03288"></a>03288 }
<a name="l03289"></a>03289 }
<a name="l03290"></a>03290 }
<a name="l03291"></a>03291 }
<a name="l03292"></a>03292 <span class="keywordflow">else</span>{ <span class="comment">// PsudeoClass source image</span>
<a name="l03293"></a>03293 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *srcData;
<a name="l03294"></a>03294 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> idx;
<a name="l03295"></a>03295 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *cTable = src.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l03296"></a>03296 <span class="keywordflow">for</span>(y=0; y < src.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l03297"></a>03297 srcData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)src.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03298"></a>03298 destData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.scanLine(y);
<a name="l03299"></a>03299 y_distance=y_scale*(y-y_center);
<a name="l03300"></a>03300 <span class="keywordflow">for</span>(x=0; x < src.<a class="codeRef" href="qimage.html#width">width</a>(); ++x){
<a name="l03301"></a>03301 idx = srcData[x];
<a name="l03302"></a>03302 destData[x] = cTable[idx];
<a name="l03303"></a>03303 x_distance = x_scale*(x-x_center);
<a name="l03304"></a>03304 distance= x_distance*x_distance+y_distance*y_distance;
<a name="l03305"></a>03305 <span class="keywordflow">if</span>(distance < (radius*radius)){
<a name="l03306"></a>03306 <span class="keywordtype">double</span> factor;
<a name="l03307"></a>03307 <span class="comment">// Implode the pixel.</span>
<a name="l03308"></a>03308 factor=1.0;
<a name="l03309"></a>03309 <span class="keywordflow">if</span>(distance > 0.0)
<a name="l03310"></a>03310 factor=
<a name="l03311"></a>03311 pow(sin(0.5000000000000001*M_PI*sqrt(distance)/radius),-amount);
<a name="l03312"></a>03312 destData[x] = interpolateColor(&src, factor*x_distance/x_scale+x_center,
<a name="l03313"></a>03313 factor*y_distance/y_scale+y_center,
<a name="l03314"></a>03314 background);
<a name="l03315"></a>03315 }
<a name="l03316"></a>03316 }
<a name="l03317"></a>03317 }
<a name="l03318"></a>03318
<a name="l03319"></a>03319 }
<a name="l03320"></a>03320 <span class="keywordflow">return</span>(dest);
<a name="l03321"></a>03321 }
<a name="l03322"></a>03322
<a name="l03323"></a><a class="code" href="classKImageEffect.html#aa8d8eb834025e710ac40914eb8cc8adc">03323</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#aa8d8eb834025e710ac40914eb8cc8adc" title="Rotates the image by the specified amount.">KImageEffect::rotate</a>(<a class="codeRef" href="qimage.html">QImage</a> &img, <a class="code" href="classKImageEffect.html#a60406c67ad94d76bc8b596f7d9411afd" title="This enum provides a rotation specification.">RotateDirection</a> r)
<a name="l03324"></a>03324 {
<a name="l03325"></a>03325 <a class="codeRef" href="qimage.html">QImage</a> dest;
<a name="l03326"></a>03326 <span class="keywordtype">int</span> x, y;
<a name="l03327"></a>03327 <span class="keywordflow">if</span>(img.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8){
<a name="l03328"></a>03328 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *srcData, *destData;
<a name="l03329"></a>03329 <span class="keywordflow">switch</span>(r){
<a name="l03330"></a>03330 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a60406c67ad94d76bc8b596f7d9411afda999de9461adf90f967929705a08e2859" title="Rotate 90 degrees to the right.">Rotate90</a>:
<a name="l03331"></a>03331 dest.<a class="codeRef" href="qimage.html#create">create</a>(img.<a class="codeRef" href="qimage.html#height">height</a>(), img.<a class="codeRef" href="qimage.html#width">width</a>(), img.<a class="codeRef" href="qimage.html#depth">depth</a>());
<a name="l03332"></a>03332 <span class="keywordflow">for</span>(y=0; y < img.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l03333"></a>03333 srcData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03334"></a>03334 <span class="keywordflow">for</span>(x=0; x < img.<a class="codeRef" href="qimage.html#width">width</a>(); ++x){
<a name="l03335"></a>03335 destData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(x);
<a name="l03336"></a>03336 destData[img.<a class="codeRef" href="qimage.html#height">height</a>()-y-1] = srcData[x];
<a name="l03337"></a>03337 }
<a name="l03338"></a>03338 }
<a name="l03339"></a>03339 <span class="keywordflow">break</span>;
<a name="l03340"></a>03340 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a60406c67ad94d76bc8b596f7d9411afdaa93912446715f21d9c4a6d371170732f" title="Rotate 180 degrees.">Rotate180</a>:
<a name="l03341"></a>03341 dest.<a class="codeRef" href="qimage.html#create">create</a>(img.<a class="codeRef" href="qimage.html#width">width</a>(), img.<a class="codeRef" href="qimage.html#height">height</a>(), img.<a class="codeRef" href="qimage.html#depth">depth</a>());
<a name="l03342"></a>03342 <span class="keywordflow">for</span>(y=0; y < img.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l03343"></a>03343 srcData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03344"></a>03344 destData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(img.<a class="codeRef" href="qimage.html#height">height</a>()-y-1);
<a name="l03345"></a>03345 <span class="keywordflow">for</span>(x=0; x < img.<a class="codeRef" href="qimage.html#width">width</a>(); ++x)
<a name="l03346"></a>03346 destData[img.<a class="codeRef" href="qimage.html#width">width</a>()-x-1] = srcData[x];
<a name="l03347"></a>03347 }
<a name="l03348"></a>03348 <span class="keywordflow">break</span>;
<a name="l03349"></a>03349 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a60406c67ad94d76bc8b596f7d9411afda9297e750d48dd49640a5102c7c0cd71b" title="Rotate 90 degrees to the left.">Rotate270</a>:
<a name="l03350"></a>03350 dest.<a class="codeRef" href="qimage.html#create">create</a>(img.<a class="codeRef" href="qimage.html#height">height</a>(), img.<a class="codeRef" href="qimage.html#width">width</a>(), img.<a class="codeRef" href="qimage.html#depth">depth</a>());
<a name="l03351"></a>03351 <span class="keywordflow">for</span>(y=0; y < img.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l03352"></a>03352 srcData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03353"></a>03353 <span class="keywordflow">for</span>(x=0; x < img.<a class="codeRef" href="qimage.html#width">width</a>(); ++x){
<a name="l03354"></a>03354 destData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(img.<a class="codeRef" href="qimage.html#width">width</a>()-x-1);
<a name="l03355"></a>03355 destData[y] = srcData[x];
<a name="l03356"></a>03356 }
<a name="l03357"></a>03357 }
<a name="l03358"></a>03358 <span class="keywordflow">break</span>;
<a name="l03359"></a>03359 <span class="keywordflow">default</span>:
<a name="l03360"></a>03360 dest = img;
<a name="l03361"></a>03361 <span class="keywordflow">break</span>;
<a name="l03362"></a>03362 }
<a name="l03363"></a>03363 }
<a name="l03364"></a>03364 <span class="keywordflow">else</span>{
<a name="l03365"></a>03365 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *srcData, *destData;
<a name="l03366"></a>03366 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *srcTable, *destTable;
<a name="l03367"></a>03367 <span class="keywordflow">switch</span>(r){
<a name="l03368"></a>03368 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a60406c67ad94d76bc8b596f7d9411afda999de9461adf90f967929705a08e2859" title="Rotate 90 degrees to the right.">Rotate90</a>:
<a name="l03369"></a>03369 dest.<a class="codeRef" href="qimage.html#create">create</a>(img.<a class="codeRef" href="qimage.html#height">height</a>(), img.<a class="codeRef" href="qimage.html#width">width</a>(), img.<a class="codeRef" href="qimage.html#depth">depth</a>());
<a name="l03370"></a>03370 dest.<a class="codeRef" href="qimage.html#setNumColors">setNumColors</a>(img.<a class="codeRef" href="qimage.html#numColors">numColors</a>());
<a name="l03371"></a>03371 srcTable = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)img.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l03372"></a>03372 destTable = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l03373"></a>03373 <span class="keywordflow">for</span>(x=0; x < img.<a class="codeRef" href="qimage.html#numColors">numColors</a>(); ++x)
<a name="l03374"></a>03374 destTable[x] = srcTable[x];
<a name="l03375"></a>03375 <span class="keywordflow">for</span>(y=0; y < img.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l03376"></a>03376 srcData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03377"></a>03377 <span class="keywordflow">for</span>(x=0; x < img.<a class="codeRef" href="qimage.html#width">width</a>(); ++x){
<a name="l03378"></a>03378 destData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)dest.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(x);
<a name="l03379"></a>03379 destData[img.<a class="codeRef" href="qimage.html#height">height</a>()-y-1] = srcData[x];
<a name="l03380"></a>03380 }
<a name="l03381"></a>03381 }
<a name="l03382"></a>03382 <span class="keywordflow">break</span>;
<a name="l03383"></a>03383 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a60406c67ad94d76bc8b596f7d9411afdaa93912446715f21d9c4a6d371170732f" title="Rotate 180 degrees.">Rotate180</a>:
<a name="l03384"></a>03384 dest.<a class="codeRef" href="qimage.html#create">create</a>(img.<a class="codeRef" href="qimage.html#width">width</a>(), img.<a class="codeRef" href="qimage.html#height">height</a>(), img.<a class="codeRef" href="qimage.html#depth">depth</a>());
<a name="l03385"></a>03385 dest.<a class="codeRef" href="qimage.html#setNumColors">setNumColors</a>(img.<a class="codeRef" href="qimage.html#numColors">numColors</a>());
<a name="l03386"></a>03386 srcTable = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)img.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l03387"></a>03387 destTable = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l03388"></a>03388 <span class="keywordflow">for</span>(x=0; x < img.<a class="codeRef" href="qimage.html#numColors">numColors</a>(); ++x)
<a name="l03389"></a>03389 destTable[x] = srcTable[x];
<a name="l03390"></a>03390 <span class="keywordflow">for</span>(y=0; y < img.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l03391"></a>03391 srcData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03392"></a>03392 destData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)dest.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(img.<a class="codeRef" href="qimage.html#height">height</a>()-y-1);
<a name="l03393"></a>03393 <span class="keywordflow">for</span>(x=0; x < img.<a class="codeRef" href="qimage.html#width">width</a>(); ++x)
<a name="l03394"></a>03394 destData[img.<a class="codeRef" href="qimage.html#width">width</a>()-x-1] = srcData[x];
<a name="l03395"></a>03395 }
<a name="l03396"></a>03396 <span class="keywordflow">break</span>;
<a name="l03397"></a>03397 <span class="keywordflow">case</span> <a class="code" href="classKImageEffect.html#a60406c67ad94d76bc8b596f7d9411afda9297e750d48dd49640a5102c7c0cd71b" title="Rotate 90 degrees to the left.">Rotate270</a>:
<a name="l03398"></a>03398 dest.<a class="codeRef" href="qimage.html#create">create</a>(img.<a class="codeRef" href="qimage.html#height">height</a>(), img.<a class="codeRef" href="qimage.html#width">width</a>(), img.<a class="codeRef" href="qimage.html#depth">depth</a>());
<a name="l03399"></a>03399 dest.<a class="codeRef" href="qimage.html#setNumColors">setNumColors</a>(img.<a class="codeRef" href="qimage.html#numColors">numColors</a>());
<a name="l03400"></a>03400 srcTable = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)img.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l03401"></a>03401 destTable = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l03402"></a>03402 <span class="keywordflow">for</span>(x=0; x < img.<a class="codeRef" href="qimage.html#numColors">numColors</a>(); ++x)
<a name="l03403"></a>03403 destTable[x] = srcTable[x];
<a name="l03404"></a>03404 <span class="keywordflow">for</span>(y=0; y < img.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l03405"></a>03405 srcData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03406"></a>03406 <span class="keywordflow">for</span>(x=0; x < img.<a class="codeRef" href="qimage.html#width">width</a>(); ++x){
<a name="l03407"></a>03407 destData = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)dest.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(img.<a class="codeRef" href="qimage.html#width">width</a>()-x-1);
<a name="l03408"></a>03408 destData[y] = srcData[x];
<a name="l03409"></a>03409 }
<a name="l03410"></a>03410 }
<a name="l03411"></a>03411 <span class="keywordflow">break</span>;
<a name="l03412"></a>03412 <span class="keywordflow">default</span>:
<a name="l03413"></a>03413 dest = img;
<a name="l03414"></a>03414 <span class="keywordflow">break</span>;
<a name="l03415"></a>03415 }
<a name="l03416"></a>03416
<a name="l03417"></a>03417 }
<a name="l03418"></a>03418 <span class="keywordflow">return</span>(dest);
<a name="l03419"></a>03419 }
<a name="l03420"></a>03420
<a name="l03421"></a><a class="code" href="classKImageEffect.html#af1121a5b5f266645235867fa4fe7d26b">03421</a> <span class="keywordtype">void</span> <a class="code" href="classKImageEffect.html#af1121a5b5f266645235867fa4fe7d26b" title="Produces a 'solarization' effect seen when exposing a photographic film to light during the developme...">KImageEffect::solarize</a>(<a class="codeRef" href="qimage.html">QImage</a> &img, <span class="keywordtype">double</span> factor)
<a name="l03422"></a>03422 {
<a name="l03423"></a>03423 <span class="keywordtype">int</span> i, count;
<a name="l03424"></a>03424 <span class="keywordtype">int</span> <a class="code" href="classKImageEffect.html#a1accfe84c4fb7ef62c32850254e2d77e" title="Thresholds the reference image.">threshold</a>;
<a name="l03425"></a>03425 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *data;
<a name="l03426"></a>03426
<a name="l03427"></a>03427 threshold = (int)(factor*(MaxRGB+1)/100.0);
<a name="l03428"></a>03428 <span class="keywordflow">if</span>(img.<a class="codeRef" href="qimage.html#depth">depth</a>() < 32){
<a name="l03429"></a>03429 data = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)img.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l03430"></a>03430 count = img.<a class="codeRef" href="qimage.html#numColors">numColors</a>();
<a name="l03431"></a>03431 }
<a name="l03432"></a>03432 <span class="keywordflow">else</span>{
<a name="l03433"></a>03433 data = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)img.<a class="codeRef" href="qimage.html#bits">bits</a>();
<a name="l03434"></a>03434 count = img.<a class="codeRef" href="qimage.html#width">width</a>()*img.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l03435"></a>03435 }
<a name="l03436"></a>03436 <span class="keywordflow">for</span>(i=0; i < count; ++i){
<a name="l03437"></a>03437 data[i] = qRgba(qRed(data[i]) > threshold ? MaxRGB-qRed(data[i]) : qRed(data[i]),
<a name="l03438"></a>03438 qGreen(data[i]) > threshold ? MaxRGB-qGreen(data[i]) : qGreen(data[i]),
<a name="l03439"></a>03439 qBlue(data[i]) > threshold ? MaxRGB-qBlue(data[i]) : qBlue(data[i]),
<a name="l03440"></a>03440 qAlpha(data[i]));
<a name="l03441"></a>03441 }
<a name="l03442"></a>03442 }
<a name="l03443"></a>03443
<a name="l03444"></a><a class="code" href="classKImageEffect.html#ad08b51e2b9d0c3995389a2a379ea46bc">03444</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#ad08b51e2b9d0c3995389a2a379ea46bc" title="Randomly displaces pixels.">KImageEffect::spread</a>(<a class="codeRef" href="qimage.html">QImage</a> &src, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> amount)
<a name="l03445"></a>03445 {
<a name="l03446"></a>03446 <span class="keywordtype">int</span> quantum, x, y;
<a name="l03447"></a>03447 <span class="keywordtype">int</span> x_distance, y_distance;
<a name="l03448"></a>03448 <span class="keywordflow">if</span>(src.<a class="codeRef" href="qimage.html#width">width</a>() < 3 || src.<a class="codeRef" href="qimage.html#height">height</a>() < 3)
<a name="l03449"></a>03449 <span class="keywordflow">return</span>(src);
<a name="l03450"></a>03450 <a class="codeRef" href="qimage.html">QImage</a> dest(src);
<a name="l03451"></a>03451 dest.<a class="codeRef" href="qimage.html#detach">detach</a>();
<a name="l03452"></a>03452 quantum=(amount+1) >> 1;
<a name="l03453"></a>03453 <span class="keywordflow">if</span>(src.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8){ <span class="comment">// DirectClass source image</span>
<a name="l03454"></a>03454 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *p, *q;
<a name="l03455"></a>03455 <span class="keywordflow">for</span>(y=0; y < src.<a class="codeRef" href="qimage.html#height">height</a>(); y++){
<a name="l03456"></a>03456 q = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03457"></a>03457 <span class="keywordflow">for</span>(x=0; x < src.<a class="codeRef" href="qimage.html#width">width</a>(); x++){
<a name="l03458"></a>03458 x_distance = x + ((rand() & (amount+1))-quantum);
<a name="l03459"></a>03459 y_distance = y + ((rand() & (amount+1))-quantum);
<a name="l03460"></a>03460 x_distance = QMIN(x_distance, src.<a class="codeRef" href="qimage.html#width">width</a>()-1);
<a name="l03461"></a>03461 y_distance = QMIN(y_distance, src.<a class="codeRef" href="qimage.html#height">height</a>()-1);
<a name="l03462"></a>03462 <span class="keywordflow">if</span>(x_distance < 0)
<a name="l03463"></a>03463 x_distance = 0;
<a name="l03464"></a>03464 <span class="keywordflow">if</span>(y_distance < 0)
<a name="l03465"></a>03465 y_distance = 0;
<a name="l03466"></a>03466 p = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)src.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y_distance);
<a name="l03467"></a>03467 p += x_distance;
<a name="l03468"></a>03468 *q++=(*p);
<a name="l03469"></a>03469 }
<a name="l03470"></a>03470 }
<a name="l03471"></a>03471 }
<a name="l03472"></a>03472 <span class="keywordflow">else</span>{ <span class="comment">// PsudeoClass source image</span>
<a name="l03473"></a>03473 <span class="comment">// just do colortable values</span>
<a name="l03474"></a>03474 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *p, *q;
<a name="l03475"></a>03475 <span class="keywordflow">for</span>(y=0; y < src.<a class="codeRef" href="qimage.html#height">height</a>(); y++){
<a name="l03476"></a>03476 q = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)dest.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03477"></a>03477 <span class="keywordflow">for</span>(x=0; x < src.<a class="codeRef" href="qimage.html#width">width</a>(); x++){
<a name="l03478"></a>03478 x_distance = x + ((rand() & (amount+1))-quantum);
<a name="l03479"></a>03479 y_distance = y + ((rand() & (amount+1))-quantum);
<a name="l03480"></a>03480 x_distance = QMIN(x_distance, src.<a class="codeRef" href="qimage.html#width">width</a>()-1);
<a name="l03481"></a>03481 y_distance = QMIN(y_distance, src.<a class="codeRef" href="qimage.html#height">height</a>()-1);
<a name="l03482"></a>03482 <span class="keywordflow">if</span>(x_distance < 0)
<a name="l03483"></a>03483 x_distance = 0;
<a name="l03484"></a>03484 <span class="keywordflow">if</span>(y_distance < 0)
<a name="l03485"></a>03485 y_distance = 0;
<a name="l03486"></a>03486 p = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)src.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y_distance);
<a name="l03487"></a>03487 p += x_distance;
<a name="l03488"></a>03488 *q++=(*p);
<a name="l03489"></a>03489 }
<a name="l03490"></a>03490 }
<a name="l03491"></a>03491 }
<a name="l03492"></a>03492 <span class="keywordflow">return</span>(dest);
<a name="l03493"></a>03493 }
<a name="l03494"></a>03494
<a name="l03495"></a><a class="code" href="classKImageEffect.html#ad1546aa85db4f0699decdb16fb0a6ecf">03495</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#ad1546aa85db4f0699decdb16fb0a6ecf" title="Swirls the image by a specified amount.">KImageEffect::swirl</a>(<a class="codeRef" href="qimage.html">QImage</a> &src, <span class="keywordtype">double</span> degrees,
<a name="l03496"></a>03496 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> background)
<a name="l03497"></a>03497 {
<a name="l03498"></a>03498 <span class="keywordtype">double</span> cosine, distance, factor, radius, sine, x_center, x_distance,
<a name="l03499"></a>03499 x_scale, y_center, y_distance, y_scale;
<a name="l03500"></a>03500 <span class="keywordtype">int</span> x, y;
<a name="l03501"></a>03501 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *q;
<a name="l03502"></a>03502 <a class="codeRef" href="qimage.html">QImage</a> dest(src.<a class="codeRef" href="qimage.html#width">width</a>(), src.<a class="codeRef" href="qimage.html#height">height</a>(), 32);
<a name="l03503"></a>03503
<a name="l03504"></a>03504 <span class="comment">// compute scaling factor</span>
<a name="l03505"></a>03505 x_center = src.<a class="codeRef" href="qimage.html#width">width</a>()/2.0;
<a name="l03506"></a>03506 y_center = src.<a class="codeRef" href="qimage.html#height">height</a>()/2.0;
<a name="l03507"></a>03507 radius = QMAX(x_center,y_center);
<a name="l03508"></a>03508 x_scale=1.0;
<a name="l03509"></a>03509 y_scale=1.0;
<a name="l03510"></a>03510 <span class="keywordflow">if</span>(src.<a class="codeRef" href="qimage.html#width">width</a>() > src.<a class="codeRef" href="qimage.html#height">height</a>())
<a name="l03511"></a>03511 y_scale=(<span class="keywordtype">double</span>)src.<a class="codeRef" href="qimage.html#width">width</a>()/src.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l03512"></a>03512 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(src.<a class="codeRef" href="qimage.html#width">width</a>() < src.<a class="codeRef" href="qimage.html#height">height</a>())
<a name="l03513"></a>03513 x_scale=(<span class="keywordtype">double</span>)src.<a class="codeRef" href="qimage.html#height">height</a>()/src.<a class="codeRef" href="qimage.html#width">width</a>();
<a name="l03514"></a>03514 degrees=DegreesToRadians(degrees);
<a name="l03515"></a>03515 <span class="comment">// swirl each row</span>
<a name="l03516"></a>03516 <span class="keywordflow">if</span>(src.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8){ <span class="comment">// DirectClass source image</span>
<a name="l03517"></a>03517 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *p;
<a name="l03518"></a>03518 <span class="keywordflow">for</span>(y=0; y < src.<a class="codeRef" href="qimage.html#height">height</a>(); y++){
<a name="l03519"></a>03519 p = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)src.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03520"></a>03520 q = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.scanLine(y);
<a name="l03521"></a>03521 y_distance = y_scale*(y-y_center);
<a name="l03522"></a>03522 <span class="keywordflow">for</span>(x=0; x < src.<a class="codeRef" href="qimage.html#width">width</a>(); x++){
<a name="l03523"></a>03523 <span class="comment">// determine if the pixel is within an ellipse</span>
<a name="l03524"></a>03524 *q=(*p);
<a name="l03525"></a>03525 x_distance = x_scale*(x-x_center);
<a name="l03526"></a>03526 distance = x_distance*x_distance+y_distance*y_distance;
<a name="l03527"></a>03527 <span class="keywordflow">if</span> (distance < (radius*radius)){
<a name="l03528"></a>03528 <span class="comment">// swirl</span>
<a name="l03529"></a>03529 factor = 1.0-sqrt(distance)/radius;
<a name="l03530"></a>03530 sine = sin(degrees*factor*factor);
<a name="l03531"></a>03531 cosine = cos(degrees*factor*factor);
<a name="l03532"></a>03532 *q = interpolateColor(&src,
<a name="l03533"></a>03533 (cosine*x_distance-sine*y_distance)/x_scale+x_center,
<a name="l03534"></a>03534 (sine*x_distance+cosine*y_distance)/y_scale+y_center,
<a name="l03535"></a>03535 background);
<a name="l03536"></a>03536 }
<a name="l03537"></a>03537 p++;
<a name="l03538"></a>03538 q++;
<a name="l03539"></a>03539 }
<a name="l03540"></a>03540 }
<a name="l03541"></a>03541 }
<a name="l03542"></a>03542 <span class="keywordflow">else</span>{ <span class="comment">// PsudeoClass source image</span>
<a name="l03543"></a>03543 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *p;
<a name="l03544"></a>03544 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *cTable = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)src.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l03545"></a>03545 <span class="keywordflow">for</span>(y=0; y < src.<a class="codeRef" href="qimage.html#height">height</a>(); y++){
<a name="l03546"></a>03546 p = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)src.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03547"></a>03547 q = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.scanLine(y);
<a name="l03548"></a>03548 y_distance = y_scale*(y-y_center);
<a name="l03549"></a>03549 <span class="keywordflow">for</span>(x=0; x < src.<a class="codeRef" href="qimage.html#width">width</a>(); x++){
<a name="l03550"></a>03550 <span class="comment">// determine if the pixel is within an ellipse</span>
<a name="l03551"></a>03551 *q = *(cTable+(*p));
<a name="l03552"></a>03552 x_distance = x_scale*(x-x_center);
<a name="l03553"></a>03553 distance = x_distance*x_distance+y_distance*y_distance;
<a name="l03554"></a>03554 <span class="keywordflow">if</span> (distance < (radius*radius)){
<a name="l03555"></a>03555 <span class="comment">// swirl</span>
<a name="l03556"></a>03556 factor = 1.0-sqrt(distance)/radius;
<a name="l03557"></a>03557 sine = sin(degrees*factor*factor);
<a name="l03558"></a>03558 cosine = cos(degrees*factor*factor);
<a name="l03559"></a>03559 *q = interpolateColor(&src,
<a name="l03560"></a>03560 (cosine*x_distance-sine*y_distance)/x_scale+x_center,
<a name="l03561"></a>03561 (sine*x_distance+cosine*y_distance)/y_scale+y_center,
<a name="l03562"></a>03562 background);
<a name="l03563"></a>03563 }
<a name="l03564"></a>03564 p++;
<a name="l03565"></a>03565 q++;
<a name="l03566"></a>03566 }
<a name="l03567"></a>03567 }
<a name="l03568"></a>03568
<a name="l03569"></a>03569 }
<a name="l03570"></a>03570 <span class="keywordflow">return</span>(dest);
<a name="l03571"></a>03571 }
<a name="l03572"></a>03572
<a name="l03573"></a><a class="code" href="classKImageEffect.html#ae744abbbcbfd2ed87b091815ef259ede">03573</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#ae744abbbcbfd2ed87b091815ef259ede" title="Modifies the pixels along a sine wave.">KImageEffect::wave</a>(<a class="codeRef" href="qimage.html">QImage</a> &src, <span class="keywordtype">double</span> amplitude, <span class="keywordtype">double</span> wavelength,
<a name="l03574"></a>03574 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> background)
<a name="l03575"></a>03575 {
<a name="l03576"></a>03576 <span class="keywordtype">double</span> *sine_map;
<a name="l03577"></a>03577 <span class="keywordtype">int</span> x, y;
<a name="l03578"></a>03578 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *q;
<a name="l03579"></a>03579
<a name="l03580"></a>03580 <a class="codeRef" href="qimage.html">QImage</a> dest(src.<a class="codeRef" href="qimage.html#width">width</a>(), src.<a class="codeRef" href="qimage.html#height">height</a>() + (int)(2*fabs(amplitude)), 32);
<a name="l03581"></a>03581 <span class="comment">// allocate sine map</span>
<a name="l03582"></a>03582 sine_map = (<span class="keywordtype">double</span> *)malloc(dest.<a class="codeRef" href="qimage.html#width">width</a>()*<span class="keyword">sizeof</span>(double));
<a name="l03583"></a>03583 <span class="keywordflow">if</span>(!sine_map)
<a name="l03584"></a>03584 <span class="keywordflow">return</span>(src);
<a name="l03585"></a>03585 <span class="keywordflow">for</span>(x=0; x < dest.<a class="codeRef" href="qimage.html#width">width</a>(); ++x)
<a name="l03586"></a>03586 sine_map[x]=fabs(amplitude)+amplitude*sin((2*M_PI*x)/wavelength);
<a name="l03587"></a>03587 <span class="comment">// wave image</span>
<a name="l03588"></a>03588 <span class="keywordflow">for</span>(y=0; y < dest.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l03589"></a>03589 q = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03590"></a>03590 <span class="keywordflow">for</span> (x=0; x < dest.<a class="codeRef" href="qimage.html#width">width</a>(); x++){
<a name="l03591"></a>03591 *q=interpolateColor(&src, x, (<span class="keywordtype">int</span>)(y-sine_map[x]), background);
<a name="l03592"></a>03592 ++q;
<a name="l03593"></a>03593 }
<a name="l03594"></a>03594 }
<a name="l03595"></a>03595 free(sine_map);
<a name="l03596"></a>03596 <span class="keywordflow">return</span>(dest);
<a name="l03597"></a>03597 }
<a name="l03598"></a>03598
<a name="l03599"></a>03599 <span class="comment">//</span>
<a name="l03600"></a>03600 <span class="comment">// The following methods work by computing a value from neighboring pixels</span>
<a name="l03601"></a>03601 <span class="comment">// (mosfet 05/26/03)</span>
<a name="l03602"></a>03602 <span class="comment">//</span>
<a name="l03603"></a>03603
<a name="l03604"></a>03604 <span class="comment">// New algorithms based on ImageMagick 5.5.6 (05/26/03)</span>
<a name="l03605"></a>03605
<a name="l03606"></a><a class="code" href="classKImageEffect.html#ae8a3d4dfd349961156c074c163e524dd">03606</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#ae8a3d4dfd349961156c074c163e524dd" title="This is provided for binary compatability only! Use the above method instead!">KImageEffect::oilPaint</a>(<a class="codeRef" href="qimage.html">QImage</a> &src, <span class="keywordtype">int</span> <span class="comment">/*radius*/</span>)
<a name="l03607"></a>03607 {
<a name="l03608"></a>03608 <span class="comment">/* binary compat method - remove me when possible! */</span>
<a name="l03609"></a>03609 <span class="keywordflow">return</span>(<a class="code" href="classKImageEffect.html#a51848de077e260a2b2e618271efcfbbf" title="Produces an oil painting effect.">oilPaintConvolve</a>(src, 0));
<a name="l03610"></a>03610 }
<a name="l03611"></a>03611
<a name="l03612"></a><a class="code" href="classKImageEffect.html#a51848de077e260a2b2e618271efcfbbf">03612</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#a51848de077e260a2b2e618271efcfbbf" title="Produces an oil painting effect.">KImageEffect::oilPaintConvolve</a>(<a class="codeRef" href="qimage.html">QImage</a> &src, <span class="keywordtype">double</span> radius)
<a name="l03613"></a>03613 {
<a name="l03614"></a>03614 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> count <span class="comment">/*,*histogram*/</span>;
<a name="l03615"></a>03615 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> histogram[256];
<a name="l03616"></a>03616 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> k;
<a name="l03617"></a>03617 <span class="keywordtype">int</span> width;
<a name="l03618"></a>03618 <span class="keywordtype">int</span> x, y, mx, my, sx, sy;
<a name="l03619"></a>03619 <span class="keywordtype">int</span> mcx, mcy;
<a name="l03620"></a>03620 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *s=0, *q;
<a name="l03621"></a>03621
<a name="l03622"></a>03622 <span class="keywordflow">if</span>(src.<a class="codeRef" href="qimage.html#depth">depth</a>() < 32)
<a name="l03623"></a>03623 src.<a class="codeRef" href="qimage.html#convertDepth">convertDepth</a>(32);
<a name="l03624"></a>03624 <a class="codeRef" href="qimage.html">QImage</a> dest(src);
<a name="l03625"></a>03625 dest.<a class="codeRef" href="qimage.html#detach">detach</a>();
<a name="l03626"></a>03626
<a name="l03627"></a>03627 width = getOptimalKernelWidth(radius, 0.5);
<a name="l03628"></a>03628 <span class="keywordflow">if</span>(src.<a class="codeRef" href="qimage.html#width">width</a>() < width){
<a name="l03629"></a>03629 qWarning(<span class="stringliteral">"KImageEffect::oilPaintConvolve(): Image is smaller than radius!"</span>);
<a name="l03630"></a>03630 <span class="keywordflow">return</span>(dest);
<a name="l03631"></a>03631 }
<a name="l03632"></a>03632 <span class="comment">/*</span>
<a name="l03633"></a>03633 <span class="comment"> histogram = (unsigned long *)malloc(256*sizeof(unsigned long));</span>
<a name="l03634"></a>03634 <span class="comment"> if(!histogram){</span>
<a name="l03635"></a>03635 <span class="comment"> qWarning("KImageEffect::oilPaintColvolve(): Unable to allocate memory!");</span>
<a name="l03636"></a>03636 <span class="comment"> return(dest);</span>
<a name="l03637"></a>03637 <span class="comment"> }</span>
<a name="l03638"></a>03638 <span class="comment"> */</span>
<a name="l03639"></a>03639 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> **jumpTable = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> **)src.<a class="codeRef" href="qimage.html#jumpTable">jumpTable</a>();
<a name="l03640"></a>03640 <span class="keywordflow">for</span>(y=0; y < dest.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l03641"></a>03641 sy = y-(width/2);
<a name="l03642"></a>03642 q = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03643"></a>03643 <span class="keywordflow">for</span>(x=0; x < dest.<a class="codeRef" href="qimage.html#width">width</a>(); ++x){
<a name="l03644"></a>03644 count = 0;
<a name="l03645"></a>03645 memset(histogram, 0, 256*<span class="keyword">sizeof</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span>));
<a name="l03646"></a>03646 <span class="comment">//memset(histogram, 0, 256);</span>
<a name="l03647"></a>03647 sy = y-(width/2);
<a name="l03648"></a>03648 <span class="keywordflow">for</span>(mcy=0; mcy < width; ++mcy, ++sy){
<a name="l03649"></a>03649 my = sy < 0 ? 0 : sy > src.<a class="codeRef" href="qimage.html#height">height</a>()-1 ?
<a name="l03650"></a>03650 src.<a class="codeRef" href="qimage.html#height">height</a>()-1 : sy;
<a name="l03651"></a>03651 sx = x+(-width/2);
<a name="l03652"></a>03652 <span class="keywordflow">for</span>(mcx=0; mcx < width; ++mcx, ++sx){
<a name="l03653"></a>03653 mx = sx < 0 ? 0 : sx > src.<a class="codeRef" href="qimage.html#width">width</a>()-1 ?
<a name="l03654"></a>03654 src.<a class="codeRef" href="qimage.html#width">width</a>()-1 : sx;
<a name="l03655"></a>03655
<a name="l03656"></a>03656 k = intensityValue(jumpTable[my][mx]);
<a name="l03657"></a>03657 <span class="keywordflow">if</span>(k > 255){
<a name="l03658"></a>03658 qWarning(<span class="stringliteral">"KImageEffect::oilPaintConvolve(): k is %d"</span>,
<a name="l03659"></a>03659 k);
<a name="l03660"></a>03660 k = 255;
<a name="l03661"></a>03661 }
<a name="l03662"></a>03662 histogram[k]++;
<a name="l03663"></a>03663 <span class="keywordflow">if</span>(histogram[k] > count){
<a name="l03664"></a>03664 count = histogram[k];
<a name="l03665"></a>03665 s = jumpTable[my]+mx;
<a name="l03666"></a>03666 }
<a name="l03667"></a>03667 }
<a name="l03668"></a>03668 }
<a name="l03669"></a>03669 <span class="keywordflow">if</span> (s)
<a name="l03670"></a>03670 *q++ = (*s);
<a name="l03671"></a>03671 }
<a name="l03672"></a>03672 }
<a name="l03673"></a>03673 <span class="comment">/* liberateMemory((histogram); */</span>
<a name="l03674"></a>03674 <span class="keywordflow">return</span>(dest);
<a name="l03675"></a>03675 }
<a name="l03676"></a>03676
<a name="l03677"></a><a class="code" href="classKImageEffect.html#a074f4032d61898072b9942b566370378">03677</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#aa5032a9677a4099f1552c94f84df8e59" title="Produces a neat little "charcoal" effect.">KImageEffect::charcoal</a>(<a class="codeRef" href="qimage.html">QImage</a> &src, <span class="keywordtype">double</span> <span class="comment">/*factor*/</span>)
<a name="l03678"></a>03678 {
<a name="l03679"></a>03679 <span class="comment">/* binary compat method - remove me when possible! */</span>
<a name="l03680"></a>03680 <span class="keywordflow">return</span>(<a class="code" href="classKImageEffect.html#aa5032a9677a4099f1552c94f84df8e59" title="Produces a neat little "charcoal" effect.">charcoal</a>(src, 0, 1));
<a name="l03681"></a>03681 }
<a name="l03682"></a>03682
<a name="l03683"></a><a class="code" href="classKImageEffect.html#aa5032a9677a4099f1552c94f84df8e59">03683</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#aa5032a9677a4099f1552c94f84df8e59" title="Produces a neat little "charcoal" effect.">KImageEffect::charcoal</a>(<a class="codeRef" href="qimage.html">QImage</a> &src, <span class="keywordtype">double</span> radius, <span class="keywordtype">double</span> sigma)
<a name="l03684"></a>03684 {
<a name="l03685"></a>03685 <a class="codeRef" href="qimage.html">QImage</a> img(<a class="code" href="classKImageEffect.html#aa4a3ac47ad86b22c5a11346ae41a3c70" title="Detects edges in an image using pixel neighborhoods and an edge detection mask.">edge</a>(src, radius));
<a name="l03686"></a>03686 img = <a class="code" href="classKImageEffect.html#a61e33dc5c8ae5fe8a48656c3f65015cb" title="Blurs an image by convolving pixel neighborhoods.">blur</a>(img, radius, sigma);
<a name="l03687"></a>03687 <a class="code" href="classKImageEffect.html#a9a6e23f8b0dc1fb2eab48384bb584d3a" title="Normalises the pixel values to span the full range of color values.">normalize</a>(img);
<a name="l03688"></a>03688 img.<a class="codeRef" href="qimage.html#invertPixels">invertPixels</a>(<span class="keyword">false</span>);
<a name="l03689"></a>03689 <a class="code" href="classKImageEffect.html#a84c6b5464eb3e5f23742386770dda0cb" title="Convert an image to grayscale.">KImageEffect::toGray</a>(img);
<a name="l03690"></a>03690 <span class="keywordflow">return</span>(img);
<a name="l03691"></a>03691 }
<a name="l03692"></a>03692
<a name="l03693"></a><a class="code" href="classKImageEffect.html#a9a6e23f8b0dc1fb2eab48384bb584d3a">03693</a> <span class="keywordtype">void</span> <a class="code" href="classKImageEffect.html#a9a6e23f8b0dc1fb2eab48384bb584d3a" title="Normalises the pixel values to span the full range of color values.">KImageEffect::normalize</a>(<a class="codeRef" href="qimage.html">QImage</a> &image)
<a name="l03694"></a>03694 {
<a name="l03695"></a>03695 <span class="keyword">struct </span>double_packet high, low, intensity, *histogram;
<a name="l03696"></a>03696 <span class="keyword">struct </span>short_packet *normalize_map;
<a name="l03697"></a>03697 Q_INT64 number_pixels;
<a name="l03698"></a>03698 <span class="keywordtype">int</span> x, y;
<a name="l03699"></a>03699 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *p, *q;
<a name="l03700"></a>03700 <span class="keyword">register</span> <span class="keywordtype">long</span> i;
<a name="l03701"></a>03701 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> threshold_intensity;
<a name="l03702"></a>03702 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> r, g, b, a;
<a name="l03703"></a>03703
<a name="l03704"></a>03704 <span class="keywordflow">if</span>(image.<a class="codeRef" href="qimage.html#depth">depth</a>() < 32) <span class="comment">// result will always be 32bpp</span>
<a name="l03705"></a>03705 image = image.<a class="codeRef" href="qimage.html#convertDepth">convertDepth</a>(32);
<a name="l03706"></a>03706
<a name="l03707"></a>03707 histogram = (<span class="keyword">struct </span>double_packet *)
<a name="l03708"></a>03708 malloc(256*<span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03709"></a>03709 normalize_map = (<span class="keyword">struct </span>short_packet *)
<a name="l03710"></a>03710 malloc(256*<span class="keyword">sizeof</span>(<span class="keyword">struct</span> short_packet));
<a name="l03711"></a>03711
<a name="l03712"></a>03712 <span class="keywordflow">if</span>(!histogram || !normalize_map){
<a name="l03713"></a>03713 <span class="keywordflow">if</span>(histogram)
<a name="l03714"></a>03714 liberateMemory(&histogram);
<a name="l03715"></a>03715 <span class="keywordflow">if</span>(normalize_map)
<a name="l03716"></a>03716 liberateMemory(&normalize_map);
<a name="l03717"></a>03717 qWarning(<span class="stringliteral">"KImageEffect::normalize(): Unable to allocate memory!"</span>);
<a name="l03718"></a>03718 <span class="keywordflow">return</span>;
<a name="l03719"></a>03719 }
<a name="l03720"></a>03720
<a name="l03721"></a>03721 <span class="comment">/*</span>
<a name="l03722"></a>03722 <span class="comment"> Form histogram.</span>
<a name="l03723"></a>03723 <span class="comment"> */</span>
<a name="l03724"></a>03724 memset(histogram, 0, 256*<span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03725"></a>03725 <span class="keywordflow">for</span>(y=0; y < image.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l03726"></a>03726 p = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03727"></a>03727 <span class="keywordflow">for</span>(x=0; x < image.<a class="codeRef" href="qimage.html#width">width</a>(); ++x){
<a name="l03728"></a>03728 histogram[(<span class="keywordtype">unsigned</span> char)(qRed(*p))].red++;
<a name="l03729"></a>03729 histogram[(<span class="keywordtype">unsigned</span> char)(qGreen(*p))].green++;
<a name="l03730"></a>03730 histogram[(<span class="keywordtype">unsigned</span> char)(qBlue(*p))].blue++;
<a name="l03731"></a>03731 histogram[(<span class="keywordtype">unsigned</span> char)(qAlpha(*p))].alpha++;
<a name="l03732"></a>03732 p++;
<a name="l03733"></a>03733 }
<a name="l03734"></a>03734 }
<a name="l03735"></a>03735
<a name="l03736"></a>03736 <span class="comment">/*</span>
<a name="l03737"></a>03737 <span class="comment"> Find the histogram boundaries by locating the 0.1 percent levels.</span>
<a name="l03738"></a>03738 <span class="comment"> */</span>
<a name="l03739"></a>03739 number_pixels = (Q_INT64)image.<a class="codeRef" href="qimage.html#width">width</a>()*image.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l03740"></a>03740 threshold_intensity = number_pixels/1000;
<a name="l03741"></a>03741
<a name="l03742"></a>03742 <span class="comment">/* red */</span>
<a name="l03743"></a>03743 memset(&intensity, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03744"></a>03744 memset(&high, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03745"></a>03745 memset(&low, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03746"></a>03746 <span class="keywordflow">for</span>(high.red=255; high.red != 0; high.red--){
<a name="l03747"></a>03747 intensity.red+=histogram[(<span class="keywordtype">unsigned</span> char)high.red].red;
<a name="l03748"></a>03748 <span class="keywordflow">if</span>(intensity.red > threshold_intensity)
<a name="l03749"></a>03749 <span class="keywordflow">break</span>;
<a name="l03750"></a>03750 }
<a name="l03751"></a>03751 <span class="keywordflow">if</span>(low.red == high.red){
<a name="l03752"></a>03752 threshold_intensity = 0;
<a name="l03753"></a>03753 memset(&intensity, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03754"></a>03754 <span class="keywordflow">for</span>(low.red=0; low.red < 255; low.red++){
<a name="l03755"></a>03755 intensity.red+=histogram[(<span class="keywordtype">unsigned</span> char)low.red].red;
<a name="l03756"></a>03756 <span class="keywordflow">if</span>(intensity.red > threshold_intensity)
<a name="l03757"></a>03757 <span class="keywordflow">break</span>;
<a name="l03758"></a>03758 }
<a name="l03759"></a>03759 memset(&intensity, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03760"></a>03760 <span class="keywordflow">for</span>(high.red=255; high.red != 0; high.red--){
<a name="l03761"></a>03761 intensity.red+=histogram[(<span class="keywordtype">unsigned</span> char)high.red].red;
<a name="l03762"></a>03762 <span class="keywordflow">if</span>(intensity.red > threshold_intensity)
<a name="l03763"></a>03763 <span class="keywordflow">break</span>;
<a name="l03764"></a>03764 }
<a name="l03765"></a>03765 }
<a name="l03766"></a>03766
<a name="l03767"></a>03767 <span class="comment">/* green */</span>
<a name="l03768"></a>03768 memset(&intensity, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03769"></a>03769 <span class="keywordflow">for</span>(high.green=255; high.green != 0; high.green--){
<a name="l03770"></a>03770 intensity.green+=histogram[(<span class="keywordtype">unsigned</span> char)high.green].green;
<a name="l03771"></a>03771 <span class="keywordflow">if</span>(intensity.green > threshold_intensity)
<a name="l03772"></a>03772 <span class="keywordflow">break</span>;
<a name="l03773"></a>03773 }
<a name="l03774"></a>03774 <span class="keywordflow">if</span>(low.green == high.green){
<a name="l03775"></a>03775 threshold_intensity = 0;
<a name="l03776"></a>03776 memset(&intensity, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03777"></a>03777 <span class="keywordflow">for</span>(low.green=0; low.green < 255; low.green++){
<a name="l03778"></a>03778 intensity.green+=histogram[(<span class="keywordtype">unsigned</span> char)low.green].green;
<a name="l03779"></a>03779 <span class="keywordflow">if</span>(intensity.green > threshold_intensity)
<a name="l03780"></a>03780 <span class="keywordflow">break</span>;
<a name="l03781"></a>03781 }
<a name="l03782"></a>03782 memset(&intensity,0,<span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03783"></a>03783 <span class="keywordflow">for</span>(high.green=255; high.green != 0; high.green--){
<a name="l03784"></a>03784 intensity.green+=histogram[(<span class="keywordtype">unsigned</span> char)high.green].green;
<a name="l03785"></a>03785 <span class="keywordflow">if</span>(intensity.green > threshold_intensity)
<a name="l03786"></a>03786 <span class="keywordflow">break</span>;
<a name="l03787"></a>03787 }
<a name="l03788"></a>03788 }
<a name="l03789"></a>03789
<a name="l03790"></a>03790 <span class="comment">/* blue */</span>
<a name="l03791"></a>03791 memset(&intensity, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03792"></a>03792 <span class="keywordflow">for</span>(high.blue=255; high.blue != 0; high.blue--){
<a name="l03793"></a>03793 intensity.blue+=histogram[(<span class="keywordtype">unsigned</span> char)high.blue].blue;
<a name="l03794"></a>03794 <span class="keywordflow">if</span>(intensity.blue > threshold_intensity)
<a name="l03795"></a>03795 <span class="keywordflow">break</span>;
<a name="l03796"></a>03796 }
<a name="l03797"></a>03797 <span class="keywordflow">if</span>(low.blue == high.blue){
<a name="l03798"></a>03798 threshold_intensity = 0;
<a name="l03799"></a>03799 memset(&intensity, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03800"></a>03800 <span class="keywordflow">for</span>(low.blue=0; low.blue < 255; low.blue++){
<a name="l03801"></a>03801 intensity.blue+=histogram[(<span class="keywordtype">unsigned</span> char)low.blue].blue;
<a name="l03802"></a>03802 <span class="keywordflow">if</span>(intensity.blue > threshold_intensity)
<a name="l03803"></a>03803 <span class="keywordflow">break</span>;
<a name="l03804"></a>03804 }
<a name="l03805"></a>03805 memset(&intensity,0,<span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03806"></a>03806 <span class="keywordflow">for</span>(high.blue=255; high.blue != 0; high.blue--){
<a name="l03807"></a>03807 intensity.blue+=histogram[(<span class="keywordtype">unsigned</span> char)high.blue].blue;
<a name="l03808"></a>03808 <span class="keywordflow">if</span>(intensity.blue > threshold_intensity)
<a name="l03809"></a>03809 <span class="keywordflow">break</span>;
<a name="l03810"></a>03810 }
<a name="l03811"></a>03811 }
<a name="l03812"></a>03812
<a name="l03813"></a>03813 <span class="comment">/* alpha */</span>
<a name="l03814"></a>03814 memset(&intensity, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03815"></a>03815 <span class="keywordflow">for</span>(high.alpha=255; high.alpha != 0; high.alpha--){
<a name="l03816"></a>03816 intensity.alpha+=histogram[(<span class="keywordtype">unsigned</span> char)high.alpha].alpha;
<a name="l03817"></a>03817 <span class="keywordflow">if</span>(intensity.alpha > threshold_intensity)
<a name="l03818"></a>03818 <span class="keywordflow">break</span>;
<a name="l03819"></a>03819 }
<a name="l03820"></a>03820 <span class="keywordflow">if</span>(low.alpha == high.alpha){
<a name="l03821"></a>03821 threshold_intensity = 0;
<a name="l03822"></a>03822 memset(&intensity, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03823"></a>03823 <span class="keywordflow">for</span>(low.alpha=0; low.alpha < 255; low.alpha++){
<a name="l03824"></a>03824 intensity.alpha+=histogram[(<span class="keywordtype">unsigned</span> char)low.alpha].alpha;
<a name="l03825"></a>03825 <span class="keywordflow">if</span>(intensity.alpha > threshold_intensity)
<a name="l03826"></a>03826 <span class="keywordflow">break</span>;
<a name="l03827"></a>03827 }
<a name="l03828"></a>03828 memset(&intensity,0,<span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03829"></a>03829 <span class="keywordflow">for</span>(high.alpha=255; high.alpha != 0; high.alpha--){
<a name="l03830"></a>03830 intensity.alpha+=histogram[(<span class="keywordtype">unsigned</span> char)high.alpha].alpha;
<a name="l03831"></a>03831 <span class="keywordflow">if</span>(intensity.alpha > threshold_intensity)
<a name="l03832"></a>03832 <span class="keywordflow">break</span>;
<a name="l03833"></a>03833 }
<a name="l03834"></a>03834 }
<a name="l03835"></a>03835 liberateMemory(&histogram);
<a name="l03836"></a>03836
<a name="l03837"></a>03837 <span class="comment">/*</span>
<a name="l03838"></a>03838 <span class="comment"> Stretch the histogram to create the normalized image mapping.</span>
<a name="l03839"></a>03839 <span class="comment"> */</span>
<a name="l03840"></a>03840
<a name="l03841"></a>03841 <span class="comment">// should the maxes be 65535?</span>
<a name="l03842"></a>03842 memset(normalize_map, 0 ,256*<span class="keyword">sizeof</span>(<span class="keyword">struct</span> short_packet));
<a name="l03843"></a>03843 <span class="keywordflow">for</span>(i=0; i <= (long) 255; i++){
<a name="l03844"></a>03844 <span class="keywordflow">if</span>(i < (<span class="keywordtype">long</span>) low.red)
<a name="l03845"></a>03845 normalize_map[i].red=0;
<a name="l03846"></a>03846 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (i > (<span class="keywordtype">long</span>) high.red)
<a name="l03847"></a>03847 normalize_map[i].red=65535;
<a name="l03848"></a>03848 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (low.red != high.red)
<a name="l03849"></a>03849 normalize_map[i].red =
<a name="l03850"></a>03850 (<span class="keywordtype">unsigned</span> short)((65535*(i-low.red))/(high.red-low.red));
<a name="l03851"></a>03851
<a name="l03852"></a>03852 <span class="keywordflow">if</span>(i < (<span class="keywordtype">long</span>) low.green)
<a name="l03853"></a>03853 normalize_map[i].green=0;
<a name="l03854"></a>03854 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (i > (<span class="keywordtype">long</span>) high.green)
<a name="l03855"></a>03855 normalize_map[i].green=65535;
<a name="l03856"></a>03856 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (low.green != high.green)
<a name="l03857"></a>03857 normalize_map[i].green =
<a name="l03858"></a>03858 (<span class="keywordtype">unsigned</span> short)((65535*(i-low.green))/(high.green-low.green));
<a name="l03859"></a>03859
<a name="l03860"></a>03860 <span class="keywordflow">if</span>(i < (<span class="keywordtype">long</span>) low.blue)
<a name="l03861"></a>03861 normalize_map[i].blue=0;
<a name="l03862"></a>03862 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (i > (<span class="keywordtype">long</span>) high.blue)
<a name="l03863"></a>03863 normalize_map[i].blue=65535;
<a name="l03864"></a>03864 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (low.blue != high.blue)
<a name="l03865"></a>03865 normalize_map[i].blue =
<a name="l03866"></a>03866 (<span class="keywordtype">unsigned</span> short)((65535*(i-low.blue))/(high.blue-low.blue));
<a name="l03867"></a>03867
<a name="l03868"></a>03868 <span class="keywordflow">if</span>(i < (<span class="keywordtype">long</span>) low.alpha)
<a name="l03869"></a>03869 normalize_map[i].alpha=0;
<a name="l03870"></a>03870 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (i > (<span class="keywordtype">long</span>) high.alpha)
<a name="l03871"></a>03871 normalize_map[i].alpha=65535;
<a name="l03872"></a>03872 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (low.alpha != high.alpha)
<a name="l03873"></a>03873 normalize_map[i].alpha =
<a name="l03874"></a>03874 (<span class="keywordtype">unsigned</span> short)((65535*(i-low.alpha))/(high.alpha-low.alpha));
<a name="l03875"></a>03875
<a name="l03876"></a>03876 }
<a name="l03877"></a>03877
<a name="l03878"></a>03878 <span class="keywordflow">for</span>(y=0; y < image.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l03879"></a>03879 q = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03880"></a>03880 <span class="keywordflow">for</span>(x=0; x < image.<a class="codeRef" href="qimage.html#width">width</a>(); ++x){
<a name="l03881"></a>03881 <span class="keywordflow">if</span>(low.red != high.red)
<a name="l03882"></a>03882 r = (normalize_map[(<span class="keywordtype">unsigned</span> short)(qRed(q[x]))].red)/257;
<a name="l03883"></a>03883 <span class="keywordflow">else</span>
<a name="l03884"></a>03884 r = qRed(q[x]);
<a name="l03885"></a>03885 <span class="keywordflow">if</span>(low.green != high.green)
<a name="l03886"></a>03886 g = (normalize_map[(<span class="keywordtype">unsigned</span> short)(qGreen(q[x]))].green)/257;
<a name="l03887"></a>03887 <span class="keywordflow">else</span>
<a name="l03888"></a>03888 g = qGreen(q[x]);
<a name="l03889"></a>03889 <span class="keywordflow">if</span>(low.blue != high.blue)
<a name="l03890"></a>03890 b = (normalize_map[(<span class="keywordtype">unsigned</span> short)(qBlue(q[x]))].blue)/257;
<a name="l03891"></a>03891 <span class="keywordflow">else</span>
<a name="l03892"></a>03892 b = qBlue(q[x]);
<a name="l03893"></a>03893 <span class="keywordflow">if</span>(low.alpha != high.alpha)
<a name="l03894"></a>03894 a = (normalize_map[(<span class="keywordtype">unsigned</span> short)(qAlpha(q[x]))].alpha)/257;
<a name="l03895"></a>03895 <span class="keywordflow">else</span>
<a name="l03896"></a>03896 a = qAlpha(q[x]);
<a name="l03897"></a>03897 q[x] = qRgba(r, g, b, a);
<a name="l03898"></a>03898 }
<a name="l03899"></a>03899 }
<a name="l03900"></a>03900 liberateMemory(&normalize_map);
<a name="l03901"></a>03901 }
<a name="l03902"></a>03902
<a name="l03903"></a><a class="code" href="classKImageEffect.html#adb10ec0ab4cab311d8a89cee81c39030">03903</a> <span class="keywordtype">void</span> <a class="code" href="classKImageEffect.html#adb10ec0ab4cab311d8a89cee81c39030" title="Performs histogram equalisation on the reference image.">KImageEffect::equalize</a>(<a class="codeRef" href="qimage.html">QImage</a> &image)
<a name="l03904"></a>03904 {
<a name="l03905"></a>03905 <span class="keyword">struct </span>double_packet high, low, intensity, *map, *histogram;
<a name="l03906"></a>03906 <span class="keyword">struct </span>short_packet *equalize_map;
<a name="l03907"></a>03907 <span class="keywordtype">int</span> x, y;
<a name="l03908"></a>03908 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *p, *q;
<a name="l03909"></a>03909 <span class="keywordtype">long</span> i;
<a name="l03910"></a>03910 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> r, g, b, a;
<a name="l03911"></a>03911
<a name="l03912"></a>03912 <span class="keywordflow">if</span>(image.<a class="codeRef" href="qimage.html#depth">depth</a>() < 32) <span class="comment">// result will always be 32bpp</span>
<a name="l03913"></a>03913 image = image.<a class="codeRef" href="qimage.html#convertDepth">convertDepth</a>(32);
<a name="l03914"></a>03914
<a name="l03915"></a>03915 histogram=(<span class="keyword">struct </span>double_packet *) malloc(256*<span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03916"></a>03916 map=(<span class="keyword">struct </span>double_packet *) malloc(256*<span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03917"></a>03917 equalize_map=(<span class="keyword">struct </span>short_packet *)malloc(256*<span class="keyword">sizeof</span>(<span class="keyword">struct</span> short_packet));
<a name="l03918"></a>03918 <span class="keywordflow">if</span>(!histogram || !map || !equalize_map){
<a name="l03919"></a>03919 <span class="keywordflow">if</span>(histogram)
<a name="l03920"></a>03920 liberateMemory(&histogram);
<a name="l03921"></a>03921 <span class="keywordflow">if</span>(map)
<a name="l03922"></a>03922 liberateMemory(&map);
<a name="l03923"></a>03923 <span class="keywordflow">if</span>(equalize_map)
<a name="l03924"></a>03924 liberateMemory(&equalize_map);
<a name="l03925"></a>03925 qWarning(<span class="stringliteral">"KImageEffect::equalize(): Unable to allocate memory!"</span>);
<a name="l03926"></a>03926 <span class="keywordflow">return</span>;
<a name="l03927"></a>03927 }
<a name="l03928"></a>03928
<a name="l03929"></a>03929 <span class="comment">/*</span>
<a name="l03930"></a>03930 <span class="comment"> Form histogram.</span>
<a name="l03931"></a>03931 <span class="comment"> */</span>
<a name="l03932"></a>03932 memset(histogram, 0, 256*<span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03933"></a>03933 <span class="keywordflow">for</span>(y=0; y < image.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l03934"></a>03934 p = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03935"></a>03935 <span class="keywordflow">for</span>(x=0; x < image.<a class="codeRef" href="qimage.html#width">width</a>(); ++x){
<a name="l03936"></a>03936 histogram[(<span class="keywordtype">unsigned</span> char)(qRed(*p))].red++;
<a name="l03937"></a>03937 histogram[(<span class="keywordtype">unsigned</span> char)(qGreen(*p))].green++;
<a name="l03938"></a>03938 histogram[(<span class="keywordtype">unsigned</span> char)(qBlue(*p))].blue++;
<a name="l03939"></a>03939 histogram[(<span class="keywordtype">unsigned</span> char)(qAlpha(*p))].alpha++;
<a name="l03940"></a>03940 p++;
<a name="l03941"></a>03941 }
<a name="l03942"></a>03942 }
<a name="l03943"></a>03943 <span class="comment">/*</span>
<a name="l03944"></a>03944 <span class="comment"> Integrate the histogram to get the equalization map.</span>
<a name="l03945"></a>03945 <span class="comment"> */</span>
<a name="l03946"></a>03946 memset(&intensity, 0 ,<span class="keyword">sizeof</span>(<span class="keyword">struct</span> double_packet));
<a name="l03947"></a>03947 <span class="keywordflow">for</span>(i=0; i <= 255; ++i){
<a name="l03948"></a>03948 intensity.red += histogram[i].red;
<a name="l03949"></a>03949 intensity.green += histogram[i].green;
<a name="l03950"></a>03950 intensity.blue += histogram[i].blue;
<a name="l03951"></a>03951 intensity.alpha += histogram[i].alpha;
<a name="l03952"></a>03952 map[i]=<a class="code" href="classKImageEffect.html#a02114d1df26d4b8905cfd97d01559991" title="Either brighten or dim the image by a specified percent.">intensity</a>;
<a name="l03953"></a>03953 }
<a name="l03954"></a>03954 low=map[0];
<a name="l03955"></a>03955 high=map[255];
<a name="l03956"></a>03956 memset(equalize_map, 0, 256*<span class="keyword">sizeof</span>(short_packet));
<a name="l03957"></a>03957 <span class="keywordflow">for</span>(i=0; i <= 255; ++i){
<a name="l03958"></a>03958 <span class="keywordflow">if</span>(high.red != low.red)
<a name="l03959"></a>03959 equalize_map[i].red=(<span class="keywordtype">unsigned</span> short)
<a name="l03960"></a>03960 ((65535*(map[i].red-low.red))/(high.red-low.red));
<a name="l03961"></a>03961 <span class="keywordflow">if</span>(high.green != low.green)
<a name="l03962"></a>03962 equalize_map[i].green=(<span class="keywordtype">unsigned</span> short)
<a name="l03963"></a>03963 ((65535*(map[i].green-low.green))/(high.green-low.green));
<a name="l03964"></a>03964 <span class="keywordflow">if</span>(high.blue != low.blue)
<a name="l03965"></a>03965 equalize_map[i].blue=(<span class="keywordtype">unsigned</span> short)
<a name="l03966"></a>03966 ((65535*(map[i].blue-low.blue))/(high.blue-low.blue));
<a name="l03967"></a>03967 <span class="keywordflow">if</span>(high.alpha != low.alpha)
<a name="l03968"></a>03968 equalize_map[i].alpha=(<span class="keywordtype">unsigned</span> short)
<a name="l03969"></a>03969 ((65535*(map[i].alpha-low.alpha))/(high.alpha-low.alpha));
<a name="l03970"></a>03970 }
<a name="l03971"></a>03971 liberateMemory(&histogram);
<a name="l03972"></a>03972 liberateMemory(&map);
<a name="l03973"></a>03973
<a name="l03974"></a>03974 <span class="comment">/*</span>
<a name="l03975"></a>03975 <span class="comment"> Stretch the histogram.</span>
<a name="l03976"></a>03976 <span class="comment"> */</span>
<a name="l03977"></a>03977 <span class="keywordflow">for</span>(y=0; y < image.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l03978"></a>03978 q = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)image.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l03979"></a>03979 <span class="keywordflow">for</span>(x=0; x < image.<a class="codeRef" href="qimage.html#width">width</a>(); ++x){
<a name="l03980"></a>03980 <span class="keywordflow">if</span>(low.red != high.red)
<a name="l03981"></a>03981 r = (equalize_map[(<span class="keywordtype">unsigned</span> short)(qRed(q[x]))].red/257);
<a name="l03982"></a>03982 <span class="keywordflow">else</span>
<a name="l03983"></a>03983 r = qRed(q[x]);
<a name="l03984"></a>03984 <span class="keywordflow">if</span>(low.green != high.green)
<a name="l03985"></a>03985 g = (equalize_map[(<span class="keywordtype">unsigned</span> short)(qGreen(q[x]))].green/257);
<a name="l03986"></a>03986 <span class="keywordflow">else</span>
<a name="l03987"></a>03987 g = qGreen(q[x]);
<a name="l03988"></a>03988 <span class="keywordflow">if</span>(low.blue != high.blue)
<a name="l03989"></a>03989 b = (equalize_map[(<span class="keywordtype">unsigned</span> short)(qBlue(q[x]))].blue/257);
<a name="l03990"></a>03990 <span class="keywordflow">else</span>
<a name="l03991"></a>03991 b = qBlue(q[x]);
<a name="l03992"></a>03992 <span class="keywordflow">if</span>(low.alpha != high.alpha)
<a name="l03993"></a>03993 a = (equalize_map[(<span class="keywordtype">unsigned</span> short)(qAlpha(q[x]))].alpha/257);
<a name="l03994"></a>03994 <span class="keywordflow">else</span>
<a name="l03995"></a>03995 a = qAlpha(q[x]);
<a name="l03996"></a>03996 q[x] = qRgba(r, g, b, a);
<a name="l03997"></a>03997 }
<a name="l03998"></a>03998 }
<a name="l03999"></a>03999 liberateMemory(&equalize_map);
<a name="l04000"></a>04000
<a name="l04001"></a>04001 }
<a name="l04002"></a>04002
<a name="l04003"></a><a class="code" href="classKImageEffect.html#aa4a3ac47ad86b22c5a11346ae41a3c70">04003</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#aa4a3ac47ad86b22c5a11346ae41a3c70" title="Detects edges in an image using pixel neighborhoods and an edge detection mask.">KImageEffect::edge</a>(<a class="codeRef" href="qimage.html">QImage</a> &image, <span class="keywordtype">double</span> radius)
<a name="l04004"></a>04004 {
<a name="l04005"></a>04005 <span class="keywordtype">double</span> *kernel;
<a name="l04006"></a>04006 <span class="keywordtype">int</span> width;
<a name="l04007"></a>04007 <span class="keyword">register</span> <span class="keywordtype">long</span> i;
<a name="l04008"></a>04008 <a class="codeRef" href="qimage.html">QImage</a> dest;
<a name="l04009"></a>04009
<a name="l04010"></a>04010 <span class="keywordflow">if</span>(radius == 50.0){
<a name="l04011"></a>04011 <span class="comment">/* For binary compatability! Remove me when possible! This used to</span>
<a name="l04012"></a>04012 <span class="comment"> * take a different parameter, a factor, and this was the default</span>
<a name="l04013"></a>04013 <span class="comment"> * value */</span>
<a name="l04014"></a>04014 radius = 0.0;
<a name="l04015"></a>04015 }
<a name="l04016"></a>04016
<a name="l04017"></a>04017 width = getOptimalKernelWidth(radius, 0.5);
<a name="l04018"></a>04018 <span class="keywordflow">if</span>(image.<a class="codeRef" href="qimage.html#width">width</a>() < width || image.<a class="codeRef" href="qimage.html#height">height</a>() < width){
<a name="l04019"></a>04019 qWarning(<span class="stringliteral">"KImageEffect::edge(): Image is smaller than radius!"</span>);
<a name="l04020"></a>04020 <span class="keywordflow">return</span>(dest);
<a name="l04021"></a>04021 }
<a name="l04022"></a>04022 kernel= (<span class="keywordtype">double</span> *)malloc(width*width*<span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));
<a name="l04023"></a>04023 <span class="keywordflow">if</span>(!kernel){
<a name="l04024"></a>04024 qWarning(<span class="stringliteral">"KImageEffect::edge(): Unable to allocate memory!"</span>);
<a name="l04025"></a>04025 <span class="keywordflow">return</span>(dest);
<a name="l04026"></a>04026 }
<a name="l04027"></a>04027 <span class="keywordflow">for</span>(i=0; i < (width*width); i++)
<a name="l04028"></a>04028 kernel[i]=(-1.0);
<a name="l04029"></a>04029 kernel[i/2]=width*width-1.0;
<a name="l04030"></a>04030 convolveImage(&image, &dest, width, kernel);
<a name="l04031"></a>04031 free(kernel);
<a name="l04032"></a>04032 <span class="keywordflow">return</span>(dest);
<a name="l04033"></a>04033 }
<a name="l04034"></a>04034
<a name="l04035"></a><a class="code" href="classKImageEffect.html#a099fc0097029815cea2f128884d6e8be">04035</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#a4a2676f073e634a9c7cbbfbb453d4518" title="Embosses the source image.">KImageEffect::emboss</a>(<a class="codeRef" href="qimage.html">QImage</a> &src)
<a name="l04036"></a>04036 {
<a name="l04037"></a>04037 <span class="comment">/* binary compat method - remove me when possible! */</span>
<a name="l04038"></a>04038 <span class="keywordflow">return</span>(<a class="code" href="classKImageEffect.html#a4a2676f073e634a9c7cbbfbb453d4518" title="Embosses the source image.">emboss</a>(src, 0, 1));
<a name="l04039"></a>04039 }
<a name="l04040"></a>04040
<a name="l04041"></a><a class="code" href="classKImageEffect.html#a4a2676f073e634a9c7cbbfbb453d4518">04041</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#a4a2676f073e634a9c7cbbfbb453d4518" title="Embosses the source image.">KImageEffect::emboss</a>(<a class="codeRef" href="qimage.html">QImage</a> &image, <span class="keywordtype">double</span> radius, <span class="keywordtype">double</span> sigma)
<a name="l04042"></a>04042 {
<a name="l04043"></a>04043 <span class="keywordtype">double</span> alpha, *kernel;
<a name="l04044"></a>04044 <span class="keywordtype">int</span> j, width;
<a name="l04045"></a>04045 <span class="keyword">register</span> <span class="keywordtype">long</span> i, u, v;
<a name="l04046"></a>04046 <a class="codeRef" href="qimage.html">QImage</a> dest;
<a name="l04047"></a>04047
<a name="l04048"></a>04048 <span class="keywordflow">if</span>(sigma == 0.0){
<a name="l04049"></a>04049 qWarning(<span class="stringliteral">"KImageEffect::emboss(): Zero sigma is not permitted!"</span>);
<a name="l04050"></a>04050 <span class="keywordflow">return</span>(dest);
<a name="l04051"></a>04051 }
<a name="l04052"></a>04052
<a name="l04053"></a>04053 width = getOptimalKernelWidth(radius, sigma);
<a name="l04054"></a>04054 <span class="keywordflow">if</span>(image.<a class="codeRef" href="qimage.html#width">width</a>() < width || image.<a class="codeRef" href="qimage.html#height">height</a>() < width){
<a name="l04055"></a>04055 qWarning(<span class="stringliteral">"KImageEffect::emboss(): Image is smaller than radius!"</span>);
<a name="l04056"></a>04056 <span class="keywordflow">return</span>(dest);
<a name="l04057"></a>04057 }
<a name="l04058"></a>04058 kernel= (<span class="keywordtype">double</span> *)malloc(width*width*<span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));
<a name="l04059"></a>04059 <span class="keywordflow">if</span>(!kernel){
<a name="l04060"></a>04060 qWarning(<span class="stringliteral">"KImageEffect::emboss(): Unable to allocate memory!"</span>);
<a name="l04061"></a>04061 <span class="keywordflow">return</span>(dest);
<a name="l04062"></a>04062 }
<a name="l04063"></a>04063 <span class="keywordflow">if</span>(image.<a class="codeRef" href="qimage.html#depth">depth</a>() < 32)
<a name="l04064"></a>04064 image = image.<a class="codeRef" href="qimage.html#convertDepth">convertDepth</a>(32);
<a name="l04065"></a>04065
<a name="l04066"></a>04066 i=0;
<a name="l04067"></a>04067 j=width/2;
<a name="l04068"></a>04068 <span class="keywordflow">for</span>(v=(-width/2); v <= (width/2); v++){
<a name="l04069"></a>04069 <span class="keywordflow">for</span>(u=(-width/2); u <= (width/2); u++){
<a name="l04070"></a>04070 alpha=exp(-((<span class="keywordtype">double</span>) u*u+v*v)/(2.0*sigma*sigma));
<a name="l04071"></a>04071 kernel[i]=((u < 0) || (v < 0) ? -8.0 : 8.0)*alpha/
<a name="l04072"></a>04072 (2.0*MagickPI*sigma*sigma);
<a name="l04073"></a>04073 <span class="keywordflow">if</span> (u == j)
<a name="l04074"></a>04074 kernel[i]=0.0;
<a name="l04075"></a>04075 i++;
<a name="l04076"></a>04076 }
<a name="l04077"></a>04077 j--;
<a name="l04078"></a>04078 }
<a name="l04079"></a>04079 convolveImage(&image, &dest, width, kernel);
<a name="l04080"></a>04080 liberateMemory(&kernel);
<a name="l04081"></a>04081
<a name="l04082"></a>04082 <a class="code" href="classKImageEffect.html#adb10ec0ab4cab311d8a89cee81c39030" title="Performs histogram equalisation on the reference image.">equalize</a>(dest);
<a name="l04083"></a>04083 <span class="keywordflow">return</span>(dest);
<a name="l04084"></a>04084 }
<a name="l04085"></a>04085
<a name="l04086"></a>04086 <span class="keywordtype">void</span> KImageEffect::blurScanLine(<span class="keywordtype">double</span> *kernel, <span class="keywordtype">int</span> width,
<a name="l04087"></a>04087 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *src, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *dest,
<a name="l04088"></a>04088 <span class="keywordtype">int</span> columns)
<a name="l04089"></a>04089 {
<a name="l04090"></a>04090 <span class="keyword">register</span> <span class="keywordtype">double</span> *p;
<a name="l04091"></a>04091 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *q;
<a name="l04092"></a>04092 <span class="keyword">register</span> <span class="keywordtype">int</span> x;
<a name="l04093"></a>04093 <span class="keyword">register</span> <span class="keywordtype">long</span> i;
<a name="l04094"></a>04094 <span class="keywordtype">double</span> red, green, blue, alpha;
<a name="l04095"></a>04095 <span class="keywordtype">double</span> scale = 0.0;
<a name="l04096"></a>04096
<a name="l04097"></a>04097 <span class="keywordflow">if</span>(width > columns){
<a name="l04098"></a>04098 <span class="keywordflow">for</span>(x=0; x < columns; ++x){
<a name="l04099"></a>04099 scale = 0.0;
<a name="l04100"></a>04100 red = blue = green = alpha = 0.0;
<a name="l04101"></a>04101 p = kernel;
<a name="l04102"></a>04102 q = src;
<a name="l04103"></a>04103 <span class="keywordflow">for</span>(i=0; i < columns; ++i){
<a name="l04104"></a>04104 <span class="keywordflow">if</span>((i >= (x-width/2)) && (i <= (x+width/2))){
<a name="l04105"></a>04105 red += (*p)*(qRed(*q)*257);
<a name="l04106"></a>04106 green += (*p)*(qGreen(*q)*257);
<a name="l04107"></a>04107 blue += (*p)*(qBlue(*q)*257);
<a name="l04108"></a>04108 alpha += (*p)*(qAlpha(*q)*257);
<a name="l04109"></a>04109 }
<a name="l04110"></a>04110 <span class="keywordflow">if</span>(((i+width/2-x) >= 0) && ((i+width/2-x) < width))
<a name="l04111"></a>04111 scale+=kernel[i+width/2-x];
<a name="l04112"></a>04112 p++;
<a name="l04113"></a>04113 q++;
<a name="l04114"></a>04114 }
<a name="l04115"></a>04115 scale = 1.0/scale;
<a name="l04116"></a>04116 red = scale*(red+0.5);
<a name="l04117"></a>04117 green = scale*(green+0.5);
<a name="l04118"></a>04118 blue = scale*(blue+0.5);
<a name="l04119"></a>04119 alpha = scale*(alpha+0.5);
<a name="l04120"></a>04120
<a name="l04121"></a>04121 red = red < 0 ? 0 : red > 65535 ? 65535 : red;
<a name="l04122"></a>04122 green = green < 0 ? 0 : green > 65535 ? 65535 : green;
<a name="l04123"></a>04123 blue = blue < 0 ? 0 : blue > 65535 ? 65535 : blue;
<a name="l04124"></a>04124 alpha = alpha < 0 ? 0 : alpha > 65535 ? 65535 : alpha;
<a name="l04125"></a>04125
<a name="l04126"></a>04126 dest[x] = qRgba((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(red/257UL),
<a name="l04127"></a>04127 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(green/257UL),
<a name="l04128"></a>04128 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(blue/257UL),
<a name="l04129"></a>04129 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(alpha/257UL));
<a name="l04130"></a>04130 }
<a name="l04131"></a>04131 <span class="keywordflow">return</span>;
<a name="l04132"></a>04132 }
<a name="l04133"></a>04133
<a name="l04134"></a>04134 <span class="keywordflow">for</span>(x=0; x < width/2; ++x){
<a name="l04135"></a>04135 scale = 0.0;
<a name="l04136"></a>04136 red = blue = green = alpha = 0.0;
<a name="l04137"></a>04137 p = kernel+width/2-x;
<a name="l04138"></a>04138 q = src;
<a name="l04139"></a>04139 <span class="keywordflow">for</span>(i=width/2-x; i < width; ++i){
<a name="l04140"></a>04140 red += (*p)*(qRed(*q)*257);
<a name="l04141"></a>04141 green += (*p)*(qGreen(*q)*257);
<a name="l04142"></a>04142 blue += (*p)*(qBlue(*q)*257);
<a name="l04143"></a>04143 alpha += (*p)*(qAlpha(*q)*257);
<a name="l04144"></a>04144 scale += (*p);
<a name="l04145"></a>04145 p++;
<a name="l04146"></a>04146 q++;
<a name="l04147"></a>04147 }
<a name="l04148"></a>04148 scale=1.0/scale;
<a name="l04149"></a>04149
<a name="l04150"></a>04150 red = scale*(red+0.5);
<a name="l04151"></a>04151 green = scale*(green+0.5);
<a name="l04152"></a>04152 blue = scale*(blue+0.5);
<a name="l04153"></a>04153 alpha = scale*(alpha+0.5);
<a name="l04154"></a>04154
<a name="l04155"></a>04155 red = red < 0 ? 0 : red > 65535 ? 65535 : red;
<a name="l04156"></a>04156 green = green < 0 ? 0 : green > 65535 ? 65535 : green;
<a name="l04157"></a>04157 blue = blue < 0 ? 0 : blue > 65535 ? 65535 : blue;
<a name="l04158"></a>04158 alpha = alpha < 0 ? 0 : alpha > 65535 ? 65535 : alpha;
<a name="l04159"></a>04159
<a name="l04160"></a>04160 dest[x] = qRgba((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(red/257UL),
<a name="l04161"></a>04161 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(green/257UL),
<a name="l04162"></a>04162 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(blue/257UL),
<a name="l04163"></a>04163 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(alpha/257UL));
<a name="l04164"></a>04164 }
<a name="l04165"></a>04165
<a name="l04166"></a>04166 <span class="keywordflow">for</span>(; x < columns-width/2; ++x){
<a name="l04167"></a>04167 red = blue = green = alpha = 0.0;
<a name="l04168"></a>04168 p = kernel;
<a name="l04169"></a>04169 q = src+(x-width/2);
<a name="l04170"></a>04170 <span class="keywordflow">for</span> (i=0; i < (long) width; ++i){
<a name="l04171"></a>04171 red += (*p)*(qRed(*q)*257);
<a name="l04172"></a>04172 green += (*p)*(qGreen(*q)*257);
<a name="l04173"></a>04173 blue += (*p)*(qBlue(*q)*257);
<a name="l04174"></a>04174 alpha += (*p)*(qAlpha(*q)*257);
<a name="l04175"></a>04175 p++;
<a name="l04176"></a>04176 q++;
<a name="l04177"></a>04177 }
<a name="l04178"></a>04178 red = scale*(red+0.5);
<a name="l04179"></a>04179 green = scale*(green+0.5);
<a name="l04180"></a>04180 blue = scale*(blue+0.5);
<a name="l04181"></a>04181 alpha = scale*(alpha+0.5);
<a name="l04182"></a>04182
<a name="l04183"></a>04183 red = red < 0 ? 0 : red > 65535 ? 65535 : red;
<a name="l04184"></a>04184 green = green < 0 ? 0 : green > 65535 ? 65535 : green;
<a name="l04185"></a>04185 blue = blue < 0 ? 0 : blue > 65535 ? 65535 : blue;
<a name="l04186"></a>04186 alpha = alpha < 0 ? 0 : alpha > 65535 ? 65535 : alpha;
<a name="l04187"></a>04187
<a name="l04188"></a>04188 dest[x] = qRgba((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(red/257UL),
<a name="l04189"></a>04189 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(green/257UL),
<a name="l04190"></a>04190 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(blue/257UL),
<a name="l04191"></a>04191 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(alpha/257UL));
<a name="l04192"></a>04192 }
<a name="l04193"></a>04193
<a name="l04194"></a>04194 <span class="keywordflow">for</span>(; x < columns; ++x){
<a name="l04195"></a>04195 red = blue = green = alpha = 0.0;
<a name="l04196"></a>04196 scale=0;
<a name="l04197"></a>04197 p = kernel;
<a name="l04198"></a>04198 q = src+(x-width/2);
<a name="l04199"></a>04199 <span class="keywordflow">for</span>(i=0; i < columns-x+width/2; ++i){
<a name="l04200"></a>04200 red += (*p)*(qRed(*q)*257);
<a name="l04201"></a>04201 green += (*p)*(qGreen(*q)*257);
<a name="l04202"></a>04202 blue += (*p)*(qBlue(*q)*257);
<a name="l04203"></a>04203 alpha += (*p)*(qAlpha(*q)*257);
<a name="l04204"></a>04204 scale += (*p);
<a name="l04205"></a>04205 p++;
<a name="l04206"></a>04206 q++;
<a name="l04207"></a>04207 }
<a name="l04208"></a>04208 scale=1.0/scale;
<a name="l04209"></a>04209 red = scale*(red+0.5);
<a name="l04210"></a>04210 green = scale*(green+0.5);
<a name="l04211"></a>04211 blue = scale*(blue+0.5);
<a name="l04212"></a>04212 alpha = scale*(alpha+0.5);
<a name="l04213"></a>04213
<a name="l04214"></a>04214 red = red < 0 ? 0 : red > 65535 ? 65535 : red;
<a name="l04215"></a>04215 green = green < 0 ? 0 : green > 65535 ? 65535 : green;
<a name="l04216"></a>04216 blue = blue < 0 ? 0 : blue > 65535 ? 65535 : blue;
<a name="l04217"></a>04217 alpha = alpha < 0 ? 0 : alpha > 65535 ? 65535 : alpha;
<a name="l04218"></a>04218
<a name="l04219"></a>04219 dest[x] = qRgba((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(red/257UL),
<a name="l04220"></a>04220 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(green/257UL),
<a name="l04221"></a>04221 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(blue/257UL),
<a name="l04222"></a>04222 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(alpha/257UL));
<a name="l04223"></a>04223 }
<a name="l04224"></a>04224 }
<a name="l04225"></a>04225
<a name="l04226"></a>04226 <span class="keywordtype">int</span> KImageEffect::getBlurKernel(<span class="keywordtype">int</span> width, <span class="keywordtype">double</span> sigma, <span class="keywordtype">double</span> **kernel)
<a name="l04227"></a>04227 {
<a name="l04228"></a>04228 <span class="preprocessor">#define KernelRank 3</span>
<a name="l04229"></a>04229 <span class="preprocessor"></span> <span class="keywordtype">double</span> alpha, <a class="code" href="classKImageEffect.html#a9a6e23f8b0dc1fb2eab48384bb584d3a" title="Normalises the pixel values to span the full range of color values.">normalize</a>;
<a name="l04230"></a>04230 <span class="keyword">register</span> <span class="keywordtype">long</span> i;
<a name="l04231"></a>04231 <span class="keywordtype">int</span> bias;
<a name="l04232"></a>04232
<a name="l04233"></a>04233 assert(sigma != 0.0);
<a name="l04234"></a>04234 <span class="keywordflow">if</span>(width == 0)
<a name="l04235"></a>04235 width = 3;
<a name="l04236"></a>04236 *kernel=(<span class="keywordtype">double</span> *)malloc(width*<span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));
<a name="l04237"></a>04237 <span class="keywordflow">if</span>(*kernel == (<span class="keywordtype">double</span> *)NULL)
<a name="l04238"></a>04238 <span class="keywordflow">return</span>(0);
<a name="l04239"></a>04239 memset(*kernel, 0, width*<span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));
<a name="l04240"></a>04240 bias = KernelRank*width/2;
<a name="l04241"></a>04241 <span class="keywordflow">for</span>(i=(-bias); i <= bias; i++){
<a name="l04242"></a>04242 alpha=exp(-((<span class="keywordtype">double</span>) i*i)/(2.0*KernelRank*KernelRank*sigma*sigma));
<a name="l04243"></a>04243 (*kernel)[(i+bias)/KernelRank]+=alpha/(MagickSQ2PI*sigma);
<a name="l04244"></a>04244 }
<a name="l04245"></a>04245 normalize=0;
<a name="l04246"></a>04246 <span class="keywordflow">for</span>(i=0; i < width; i++)
<a name="l04247"></a>04247 normalize+=(*kernel)[i];
<a name="l04248"></a>04248 <span class="keywordflow">for</span>(i=0; i < width; i++)
<a name="l04249"></a>04249 (*kernel)[i]/=<a class="code" href="classKImageEffect.html#a9a6e23f8b0dc1fb2eab48384bb584d3a" title="Normalises the pixel values to span the full range of color values.">normalize</a>;
<a name="l04250"></a>04250
<a name="l04251"></a>04251 <span class="keywordflow">return</span>(width);
<a name="l04252"></a>04252 }
<a name="l04253"></a>04253
<a name="l04254"></a><a class="code" href="classKImageEffect.html#a9d593548d7b7762e49551540a9e3b3ef">04254</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#a61e33dc5c8ae5fe8a48656c3f65015cb" title="Blurs an image by convolving pixel neighborhoods.">KImageEffect::blur</a>(<a class="codeRef" href="qimage.html">QImage</a> &src, <span class="keywordtype">double</span> <span class="comment">/*factor*/</span>)
<a name="l04255"></a>04255 {
<a name="l04256"></a>04256 <span class="comment">/* binary compat method - remove me when possible! */</span>
<a name="l04257"></a>04257 <span class="keywordflow">return</span>(<a class="code" href="classKImageEffect.html#a61e33dc5c8ae5fe8a48656c3f65015cb" title="Blurs an image by convolving pixel neighborhoods.">blur</a>(src, 0, 1));
<a name="l04258"></a>04258 }
<a name="l04259"></a>04259
<a name="l04260"></a><a class="code" href="classKImageEffect.html#a61e33dc5c8ae5fe8a48656c3f65015cb">04260</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#a61e33dc5c8ae5fe8a48656c3f65015cb" title="Blurs an image by convolving pixel neighborhoods.">KImageEffect::blur</a>(<a class="codeRef" href="qimage.html">QImage</a> &src, <span class="keywordtype">double</span> radius, <span class="keywordtype">double</span> sigma)
<a name="l04261"></a>04261 {
<a name="l04262"></a>04262 <span class="keywordtype">double</span> *kernel;
<a name="l04263"></a>04263 <a class="codeRef" href="qimage.html">QImage</a> dest;
<a name="l04264"></a>04264 <span class="keywordtype">int</span> width;
<a name="l04265"></a>04265 <span class="keywordtype">int</span> x, y;
<a name="l04266"></a>04266 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *scanline, *temp;
<a name="l04267"></a>04267 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *p, *q;
<a name="l04268"></a>04268
<a name="l04269"></a>04269 <span class="keywordflow">if</span>(sigma == 0.0){
<a name="l04270"></a>04270 qWarning(<span class="stringliteral">"KImageEffect::blur(): Zero sigma is not permitted!"</span>);
<a name="l04271"></a>04271 <span class="keywordflow">return</span>(dest);
<a name="l04272"></a>04272 }
<a name="l04273"></a>04273 <span class="keywordflow">if</span>(src.<a class="codeRef" href="qimage.html#depth">depth</a>() < 32)
<a name="l04274"></a>04274 src = src.<a class="codeRef" href="qimage.html#convertDepth">convertDepth</a>(32);
<a name="l04275"></a>04275
<a name="l04276"></a>04276 kernel=(<span class="keywordtype">double</span> *) NULL;
<a name="l04277"></a>04277 <span class="keywordflow">if</span>(radius > 0)
<a name="l04278"></a>04278 width=getBlurKernel((<span class="keywordtype">int</span>) (2*ceil(radius)+1),sigma,&kernel);
<a name="l04279"></a>04279 <span class="keywordflow">else</span>{
<a name="l04280"></a>04280 <span class="keywordtype">double</span> *last_kernel;
<a name="l04281"></a>04281 last_kernel=(<span class="keywordtype">double</span> *) NULL;
<a name="l04282"></a>04282 width=getBlurKernel(3,sigma,&kernel);
<a name="l04283"></a>04283
<a name="l04284"></a>04284 <span class="keywordflow">while</span> ((<span class="keywordtype">long</span>) (MaxRGB*kernel[0]) > 0){
<a name="l04285"></a>04285 <span class="keywordflow">if</span>(last_kernel != (<span class="keywordtype">double</span> *)NULL){
<a name="l04286"></a>04286 liberateMemory(&last_kernel);
<a name="l04287"></a>04287 }
<a name="l04288"></a>04288 last_kernel=kernel;
<a name="l04289"></a>04289 kernel = (<span class="keywordtype">double</span> *)NULL;
<a name="l04290"></a>04290 width = getBlurKernel(width+2, sigma, &kernel);
<a name="l04291"></a>04291 }
<a name="l04292"></a>04292 <span class="keywordflow">if</span>(last_kernel != (<span class="keywordtype">double</span> *) NULL){
<a name="l04293"></a>04293 liberateMemory(&kernel);
<a name="l04294"></a>04294 width-=2;
<a name="l04295"></a>04295 kernel = last_kernel;
<a name="l04296"></a>04296 }
<a name="l04297"></a>04297 }
<a name="l04298"></a>04298
<a name="l04299"></a>04299 <span class="keywordflow">if</span>(width < 3){
<a name="l04300"></a>04300 qWarning(<span class="stringliteral">"KImageEffect::blur(): Kernel radius is too small!"</span>);
<a name="l04301"></a>04301 liberateMemory(&kernel);
<a name="l04302"></a>04302 <span class="keywordflow">return</span>(dest);
<a name="l04303"></a>04303 }
<a name="l04304"></a>04304
<a name="l04305"></a>04305 dest.<a class="codeRef" href="qimage.html#create">create</a>(src.<a class="codeRef" href="qimage.html#width">width</a>(), src.<a class="codeRef" href="qimage.html#height">height</a>(), 32);
<a name="l04306"></a>04306
<a name="l04307"></a>04307 scanline = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)malloc(<span class="keyword">sizeof</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>)*src.<a class="codeRef" href="qimage.html#height">height</a>());
<a name="l04308"></a>04308 temp = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)malloc(<span class="keyword">sizeof</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>)*src.<a class="codeRef" href="qimage.html#height">height</a>());
<a name="l04309"></a>04309 <span class="keywordflow">for</span>(y=0; y < src.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l04310"></a>04310 p = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)src.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l04311"></a>04311 q = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l04312"></a>04312 blurScanLine(kernel, width, p, q, src.<a class="codeRef" href="qimage.html#width">width</a>());
<a name="l04313"></a>04313 }
<a name="l04314"></a>04314
<a name="l04315"></a>04315 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> **srcTable = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> **)src.<a class="codeRef" href="qimage.html#jumpTable">jumpTable</a>();
<a name="l04316"></a>04316 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> **destTable = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> **)dest.<a class="codeRef" href="qimage.html#jumpTable">jumpTable</a>();
<a name="l04317"></a>04317 <span class="keywordflow">for</span>(x=0; x < src.<a class="codeRef" href="qimage.html#width">width</a>(); ++x){
<a name="l04318"></a>04318 <span class="keywordflow">for</span>(y=0; y < src.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l04319"></a>04319 scanline[y] = srcTable[y][x];
<a name="l04320"></a>04320 }
<a name="l04321"></a>04321 blurScanLine(kernel, width, scanline, temp, src.<a class="codeRef" href="qimage.html#height">height</a>());
<a name="l04322"></a>04322 <span class="keywordflow">for</span>(y=0; y < src.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l04323"></a>04323 destTable[y][x] = temp[y];
<a name="l04324"></a>04324 }
<a name="l04325"></a>04325 }
<a name="l04326"></a>04326 free(scanline);
<a name="l04327"></a>04327 free(temp);
<a name="l04328"></a>04328 free(kernel);
<a name="l04329"></a>04329 <span class="keywordflow">return</span>(dest);
<a name="l04330"></a>04330 }
<a name="l04331"></a>04331
<a name="l04332"></a>04332 <span class="keywordtype">bool</span> KImageEffect::convolveImage(<a class="codeRef" href="qimage.html">QImage</a> *image, <a class="codeRef" href="qimage.html">QImage</a> *dest,
<a name="l04333"></a>04333 <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> order,
<a name="l04334"></a>04334 <span class="keyword">const</span> <span class="keywordtype">double</span> *kernel)
<a name="l04335"></a>04335 {
<a name="l04336"></a>04336 <span class="keywordtype">long</span> width;
<a name="l04337"></a>04337 <span class="keywordtype">double</span> red, green, blue, alpha;
<a name="l04338"></a>04338 <span class="keywordtype">double</span> <a class="code" href="classKImageEffect.html#a9a6e23f8b0dc1fb2eab48384bb584d3a" title="Normalises the pixel values to span the full range of color values.">normalize</a>, *normal_kernel;
<a name="l04339"></a>04339 <span class="keyword">register</span> <span class="keyword">const</span> <span class="keywordtype">double</span> *k;
<a name="l04340"></a>04340 <span class="keyword">register</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *q;
<a name="l04341"></a>04341 <span class="keywordtype">int</span> x, y, mx, my, sx, sy;
<a name="l04342"></a>04342 <span class="keywordtype">long</span> i;
<a name="l04343"></a>04343 <span class="keywordtype">int</span> mcx, mcy;
<a name="l04344"></a>04344
<a name="l04345"></a>04345 width = order;
<a name="l04346"></a>04346 <span class="keywordflow">if</span>((width % 2) == 0){
<a name="l04347"></a>04347 qWarning(<span class="stringliteral">"KImageEffect: Kernel width must be an odd number!"</span>);
<a name="l04348"></a>04348 <span class="keywordflow">return</span>(<span class="keyword">false</span>);
<a name="l04349"></a>04349 }
<a name="l04350"></a>04350 normal_kernel = (<span class="keywordtype">double</span> *)malloc(width*width*<span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));
<a name="l04351"></a>04351 <span class="keywordflow">if</span>(!normal_kernel){
<a name="l04352"></a>04352 qWarning(<span class="stringliteral">"KImageEffect: Unable to allocate memory!"</span>);
<a name="l04353"></a>04353 <span class="keywordflow">return</span>(<span class="keyword">false</span>);
<a name="l04354"></a>04354 }
<a name="l04355"></a>04355 dest-><a class="codeRef" href="qimage.html#reset">reset</a>();
<a name="l04356"></a>04356 dest-><a class="codeRef" href="qimage.html#create">create</a>(image-><a class="codeRef" href="qimage.html#width">width</a>(), image-><a class="codeRef" href="qimage.html#height">height</a>(), 32);
<a name="l04357"></a>04357 <span class="keywordflow">if</span>(image-><a class="codeRef" href="qimage.html#depth">depth</a>() < 32)
<a name="l04358"></a>04358 *image = image-><a class="codeRef" href="qimage.html#convertDepth">convertDepth</a>(32);
<a name="l04359"></a>04359
<a name="l04360"></a>04360 normalize=0.0;
<a name="l04361"></a>04361 <span class="keywordflow">for</span>(i=0; i < (width*width); i++)
<a name="l04362"></a>04362 normalize += kernel[i];
<a name="l04363"></a>04363 <span class="keywordflow">if</span>(fabs(normalize) <= MagickEpsilon)
<a name="l04364"></a>04364 normalize=1.0;
<a name="l04365"></a>04365 normalize=1.0/<a class="code" href="classKImageEffect.html#a9a6e23f8b0dc1fb2eab48384bb584d3a" title="Normalises the pixel values to span the full range of color values.">normalize</a>;
<a name="l04366"></a>04366 <span class="keywordflow">for</span>(i=0; i < (width*width); i++)
<a name="l04367"></a>04367 normal_kernel[i] = normalize*kernel[i];
<a name="l04368"></a>04368
<a name="l04369"></a>04369 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> **jumpTable = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> **)image-><a class="codeRef" href="qimage.html#jumpTable">jumpTable</a>();
<a name="l04370"></a>04370 <span class="keywordflow">for</span>(y=0; y < dest-><a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l04371"></a>04371 sy = y-(width/2);
<a name="l04372"></a>04372 q = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest-><a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l04373"></a>04373 <span class="keywordflow">for</span>(x=0; x < dest-><a class="codeRef" href="qimage.html#width">width</a>(); ++x){
<a name="l04374"></a>04374 k = normal_kernel;
<a name="l04375"></a>04375 red = green = blue = alpha = 0;
<a name="l04376"></a>04376 sy = y-(width/2);
<a name="l04377"></a>04377 <span class="keywordflow">for</span>(mcy=0; mcy < width; ++mcy, ++sy){
<a name="l04378"></a>04378 my = sy < 0 ? 0 : sy > image-><a class="codeRef" href="qimage.html#height">height</a>()-1 ?
<a name="l04379"></a>04379 image-><a class="codeRef" href="qimage.html#height">height</a>()-1 : sy;
<a name="l04380"></a>04380 sx = x+(-width/2);
<a name="l04381"></a>04381 <span class="keywordflow">for</span>(mcx=0; mcx < width; ++mcx, ++sx){
<a name="l04382"></a>04382 mx = sx < 0 ? 0 : sx > image-><a class="codeRef" href="qimage.html#width">width</a>()-1 ?
<a name="l04383"></a>04383 image-><a class="codeRef" href="qimage.html#width">width</a>()-1 : sx;
<a name="l04384"></a>04384 red += (*k)*(qRed(jumpTable[my][mx])*257);
<a name="l04385"></a>04385 green += (*k)*(qGreen(jumpTable[my][mx])*257);
<a name="l04386"></a>04386 blue += (*k)*(qBlue(jumpTable[my][mx])*257);
<a name="l04387"></a>04387 alpha += (*k)*(qAlpha(jumpTable[my][mx])*257);
<a name="l04388"></a>04388 ++k;
<a name="l04389"></a>04389 }
<a name="l04390"></a>04390 }
<a name="l04391"></a>04391
<a name="l04392"></a>04392 red = red < 0 ? 0 : red > 65535 ? 65535 : red+0.5;
<a name="l04393"></a>04393 green = green < 0 ? 0 : green > 65535 ? 65535 : green+0.5;
<a name="l04394"></a>04394 blue = blue < 0 ? 0 : blue > 65535 ? 65535 : blue+0.5;
<a name="l04395"></a>04395 alpha = alpha < 0 ? 0 : alpha > 65535 ? 65535 : alpha+0.5;
<a name="l04396"></a>04396
<a name="l04397"></a>04397 *q++ = qRgba((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(red/257UL),
<a name="l04398"></a>04398 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(green/257UL),
<a name="l04399"></a>04399 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(blue/257UL),
<a name="l04400"></a>04400 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(alpha/257UL));
<a name="l04401"></a>04401 }
<a name="l04402"></a>04402 }
<a name="l04403"></a>04403 free(normal_kernel);
<a name="l04404"></a>04404 <span class="keywordflow">return</span>(<span class="keyword">true</span>);
<a name="l04405"></a>04405
<a name="l04406"></a>04406 }
<a name="l04407"></a>04407
<a name="l04408"></a>04408 <span class="keywordtype">int</span> KImageEffect::getOptimalKernelWidth(<span class="keywordtype">double</span> radius, <span class="keywordtype">double</span> sigma)
<a name="l04409"></a>04409 {
<a name="l04410"></a>04410 <span class="keywordtype">double</span> <a class="code" href="classKImageEffect.html#a9a6e23f8b0dc1fb2eab48384bb584d3a" title="Normalises the pixel values to span the full range of color values.">normalize</a>, value;
<a name="l04411"></a>04411 <span class="keywordtype">long</span> width;
<a name="l04412"></a>04412 <span class="keyword">register</span> <span class="keywordtype">long</span> u;
<a name="l04413"></a>04413
<a name="l04414"></a>04414 assert(sigma != 0.0);
<a name="l04415"></a>04415 <span class="keywordflow">if</span>(radius > 0.0)
<a name="l04416"></a>04416 <span class="keywordflow">return</span>((<span class="keywordtype">int</span>)(2.0*ceil(radius)+1.0));
<a name="l04417"></a>04417 <span class="keywordflow">for</span>(width=5; ;){
<a name="l04418"></a>04418 normalize=0.0;
<a name="l04419"></a>04419 <span class="keywordflow">for</span>(u=(-width/2); u <= (width/2); u++)
<a name="l04420"></a>04420 normalize+=exp(-((<span class="keywordtype">double</span>) u*u)/(2.0*sigma*sigma))/(MagickSQ2PI*sigma);
<a name="l04421"></a>04421 u=width/2;
<a name="l04422"></a>04422 value=exp(-((<span class="keywordtype">double</span>) u*u)/(2.0*sigma*sigma))/(MagickSQ2PI*sigma)/normalize;
<a name="l04423"></a>04423 <span class="keywordflow">if</span>((<span class="keywordtype">long</span>)(65535*value) <= 0)
<a name="l04424"></a>04424 <span class="keywordflow">break</span>;
<a name="l04425"></a>04425 width+=2;
<a name="l04426"></a>04426 }
<a name="l04427"></a>04427 <span class="keywordflow">return</span>((<span class="keywordtype">int</span>)width-2);
<a name="l04428"></a>04428 }
<a name="l04429"></a>04429
<a name="l04430"></a><a class="code" href="classKImageEffect.html#addbb40520e02a423dd94e5e198f490a8">04430</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#aa738a101c2c6509b9aa105b41b3d0f57" title="Sharpens the pixels in the image using pixel neighborhoods.">KImageEffect::sharpen</a>(<a class="codeRef" href="qimage.html">QImage</a> &src, <span class="keywordtype">double</span> <span class="comment">/*factor*/</span>)
<a name="l04431"></a>04431 {
<a name="l04432"></a>04432 <span class="comment">/* binary compat method - remove me when possible! */</span>
<a name="l04433"></a>04433 <span class="keywordflow">return</span>(<a class="code" href="classKImageEffect.html#aa738a101c2c6509b9aa105b41b3d0f57" title="Sharpens the pixels in the image using pixel neighborhoods.">sharpen</a>(src, 0, 1));
<a name="l04434"></a>04434 }
<a name="l04435"></a>04435
<a name="l04436"></a><a class="code" href="classKImageEffect.html#aa738a101c2c6509b9aa105b41b3d0f57">04436</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#aa738a101c2c6509b9aa105b41b3d0f57" title="Sharpens the pixels in the image using pixel neighborhoods.">KImageEffect::sharpen</a>(<a class="codeRef" href="qimage.html">QImage</a> &image, <span class="keywordtype">double</span> radius, <span class="keywordtype">double</span> sigma)
<a name="l04437"></a>04437 {
<a name="l04438"></a>04438 <span class="keywordtype">double</span> alpha, <a class="code" href="classKImageEffect.html#a9a6e23f8b0dc1fb2eab48384bb584d3a" title="Normalises the pixel values to span the full range of color values.">normalize</a>, *kernel;
<a name="l04439"></a>04439 <span class="keywordtype">int</span> width;
<a name="l04440"></a>04440 <span class="keyword">register</span> <span class="keywordtype">long</span> i, u, v;
<a name="l04441"></a>04441 <a class="codeRef" href="qimage.html">QImage</a> dest;
<a name="l04442"></a>04442
<a name="l04443"></a>04443 <span class="keywordflow">if</span>(sigma == 0.0){
<a name="l04444"></a>04444 qWarning(<span class="stringliteral">"KImageEffect::sharpen(): Zero sigma is not permitted!"</span>);
<a name="l04445"></a>04445 <span class="keywordflow">return</span>(dest);
<a name="l04446"></a>04446 }
<a name="l04447"></a>04447 width = getOptimalKernelWidth(radius, sigma);
<a name="l04448"></a>04448 <span class="keywordflow">if</span>(image.<a class="codeRef" href="qimage.html#width">width</a>() < width){
<a name="l04449"></a>04449 qWarning(<span class="stringliteral">"KImageEffect::sharpen(): Image is smaller than radius!"</span>);
<a name="l04450"></a>04450 <span class="keywordflow">return</span>(dest);
<a name="l04451"></a>04451 }
<a name="l04452"></a>04452 kernel = (<span class="keywordtype">double</span> *)malloc(width*width*<span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));
<a name="l04453"></a>04453 <span class="keywordflow">if</span>(!kernel){
<a name="l04454"></a>04454 qWarning(<span class="stringliteral">"KImageEffect::sharpen(): Unable to allocate memory!"</span>);
<a name="l04455"></a>04455 <span class="keywordflow">return</span>(dest);
<a name="l04456"></a>04456 }
<a name="l04457"></a>04457
<a name="l04458"></a>04458 i = 0;
<a name="l04459"></a>04459 normalize=0.0;
<a name="l04460"></a>04460 <span class="keywordflow">for</span>(v=(-width/2); v <= (width/2); v++){
<a name="l04461"></a>04461 <span class="keywordflow">for</span>(u=(-width/2); u <= (width/2); u++){
<a name="l04462"></a>04462 alpha=exp(-((<span class="keywordtype">double</span>) u*u+v*v)/(2.0*sigma*sigma));
<a name="l04463"></a>04463 kernel[i]=alpha/(2.0*MagickPI*sigma*sigma);
<a name="l04464"></a>04464 normalize+=kernel[i];
<a name="l04465"></a>04465 i++;
<a name="l04466"></a>04466 }
<a name="l04467"></a>04467 }
<a name="l04468"></a>04468 kernel[i/2]=(-2.0)*<a class="code" href="classKImageEffect.html#a9a6e23f8b0dc1fb2eab48384bb584d3a" title="Normalises the pixel values to span the full range of color values.">normalize</a>;
<a name="l04469"></a>04469 convolveImage(&image, &dest, width, kernel);
<a name="l04470"></a>04470 free(kernel);
<a name="l04471"></a>04471 <span class="keywordflow">return</span>(dest);
<a name="l04472"></a>04472 }
<a name="l04473"></a>04473
<a name="l04474"></a>04474 <span class="comment">// End of new algorithms</span>
<a name="l04475"></a>04475
<a name="l04476"></a><a class="code" href="classKImageEffect.html#a59beca51265a304cf3a8e5fdff6a7212">04476</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#a59beca51265a304cf3a8e5fdff6a7212" title="Shades the image using a distance light source.">KImageEffect::shade</a>(<a class="codeRef" href="qimage.html">QImage</a> &src, <span class="keywordtype">bool</span> color_shading, <span class="keywordtype">double</span> azimuth,
<a name="l04477"></a>04477 <span class="keywordtype">double</span> elevation)
<a name="l04478"></a>04478 {
<a name="l04479"></a>04479 <span class="keyword">struct </span>PointInfo{
<a name="l04480"></a>04480 <span class="keywordtype">double</span> x, y, z;
<a name="l04481"></a>04481 };
<a name="l04482"></a>04482
<a name="l04483"></a>04483 <span class="keywordtype">double</span> distance, normal_distance, <a class="code" href="classKImageEffect.html#a59beca51265a304cf3a8e5fdff6a7212" title="Shades the image using a distance light source.">shade</a>;
<a name="l04484"></a>04484 <span class="keywordtype">int</span> x, y;
<a name="l04485"></a>04485
<a name="l04486"></a>04486 <span class="keyword">struct </span>PointInfo light, normal;
<a name="l04487"></a>04487
<a name="l04488"></a>04488 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *q;
<a name="l04489"></a>04489
<a name="l04490"></a>04490 <a class="codeRef" href="qimage.html">QImage</a> dest(src.<a class="codeRef" href="qimage.html#width">width</a>(), src.<a class="codeRef" href="qimage.html#height">height</a>(), 32);
<a name="l04491"></a>04491
<a name="l04492"></a>04492 azimuth = DegreesToRadians(azimuth);
<a name="l04493"></a>04493 elevation = DegreesToRadians(elevation);
<a name="l04494"></a>04494 light.x = MaxRGB*cos(azimuth)*cos(elevation);
<a name="l04495"></a>04495 light.y = MaxRGB*sin(azimuth)*cos(elevation);
<a name="l04496"></a>04496 light.z = MaxRGB*sin(elevation);
<a name="l04497"></a>04497 normal.z= 2*MaxRGB; <span class="comment">// constant Z of surface normal</span>
<a name="l04498"></a>04498
<a name="l04499"></a>04499 <span class="keywordflow">if</span>(src.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8){ <span class="comment">// DirectClass source image</span>
<a name="l04500"></a>04500 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *p, *s0, *s1, *s2;
<a name="l04501"></a>04501 <span class="keywordflow">for</span>(y=0; y < src.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l04502"></a>04502 p = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)src.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(QMIN(QMAX(y-1,0),src.<a class="codeRef" href="qimage.html#height">height</a>()-3));
<a name="l04503"></a>04503 q = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l04504"></a>04504 <span class="comment">// shade this row of pixels.</span>
<a name="l04505"></a>04505 *q++=(*(p+src.<a class="codeRef" href="qimage.html#width">width</a>()));
<a name="l04506"></a>04506 p++;
<a name="l04507"></a>04507 s0 = p;
<a name="l04508"></a>04508 s1 = p + src.<a class="codeRef" href="qimage.html#width">width</a>();
<a name="l04509"></a>04509 s2 = p + 2*src.<a class="codeRef" href="qimage.html#width">width</a>();
<a name="l04510"></a>04510 <span class="keywordflow">for</span>(x=1; x < src.<a class="codeRef" href="qimage.html#width">width</a>()-1; ++x){
<a name="l04511"></a>04511 <span class="comment">// determine the surface normal and compute shading.</span>
<a name="l04512"></a>04512 normal.x=intensityValue(*(s0-1))+intensityValue(*(s1-1))+intensityValue(*(s2-1))-
<a name="l04513"></a>04513 (double) intensityValue(*(s0+1))-(<span class="keywordtype">double</span>) intensityValue(*(s1+1))-
<a name="l04514"></a>04514 (double) intensityValue(*(s2+1));
<a name="l04515"></a>04515 normal.y=intensityValue(*(s2-1))+intensityValue(*s2)+intensityValue(*(s2+1))-
<a name="l04516"></a>04516 (double) intensityValue(*(s0-1))-(<span class="keywordtype">double</span>) intensityValue(*s0)-
<a name="l04517"></a>04517 (double) intensityValue(*(s0+1));
<a name="l04518"></a>04518 <span class="keywordflow">if</span>((normal.x == 0) && (normal.y == 0))
<a name="l04519"></a>04519 shade=light.z;
<a name="l04520"></a>04520 <span class="keywordflow">else</span>{
<a name="l04521"></a>04521 shade=0.0;
<a name="l04522"></a>04522 distance=normal.x*light.x+normal.y*light.y+normal.z*light.z;
<a name="l04523"></a>04523 <span class="keywordflow">if</span> (distance > 0.0){
<a name="l04524"></a>04524 normal_distance=
<a name="l04525"></a>04525 normal.x*normal.x+normal.y*normal.y+normal.z*normal.z;
<a name="l04526"></a>04526 <span class="keywordflow">if</span>(fabs(normal_distance) > 0.0000001)
<a name="l04527"></a>04527 shade=distance/sqrt(normal_distance);
<a name="l04528"></a>04528 }
<a name="l04529"></a>04529 }
<a name="l04530"></a>04530 <span class="keywordflow">if</span>(!color_shading){
<a name="l04531"></a>04531 *q = qRgba((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(shade),
<a name="l04532"></a>04532 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(shade),
<a name="l04533"></a>04533 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(shade),
<a name="l04534"></a>04534 qAlpha(*s1));
<a name="l04535"></a>04535 }
<a name="l04536"></a>04536 <span class="keywordflow">else</span>{
<a name="l04537"></a>04537 *q = qRgba((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)((shade*qRed(*s1))/(MaxRGB+1)),
<a name="l04538"></a>04538 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)((shade*qGreen(*s1))/(MaxRGB+1)),
<a name="l04539"></a>04539 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)((shade*qBlue(*s1))/(MaxRGB+1)),
<a name="l04540"></a>04540 qAlpha(*s1));
<a name="l04541"></a>04541 }
<a name="l04542"></a>04542 ++s0;
<a name="l04543"></a>04543 ++s1;
<a name="l04544"></a>04544 ++s2;
<a name="l04545"></a>04545 q++;
<a name="l04546"></a>04546 }
<a name="l04547"></a>04547 *q++=(*s1);
<a name="l04548"></a>04548 }
<a name="l04549"></a>04549 }
<a name="l04550"></a>04550 <span class="keywordflow">else</span>{ <span class="comment">// PsudeoClass source image</span>
<a name="l04551"></a>04551 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *p, *s0, *s1, *s2;
<a name="l04552"></a>04552 <span class="keywordtype">int</span> scanLineIdx;
<a name="l04553"></a>04553 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *cTable = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)src.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l04554"></a>04554 <span class="keywordflow">for</span>(y=0; y < src.<a class="codeRef" href="qimage.html#height">height</a>(); ++y){
<a name="l04555"></a>04555 scanLineIdx = QMIN(QMAX(y-1,0),src.<a class="codeRef" href="qimage.html#height">height</a>()-3);
<a name="l04556"></a>04556 p = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)src.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(scanLineIdx);
<a name="l04557"></a>04557 q = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)dest.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(y);
<a name="l04558"></a>04558 <span class="comment">// shade this row of pixels.</span>
<a name="l04559"></a>04559 s0 = p;
<a name="l04560"></a>04560 s1 = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *) src.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(scanLineIdx+1);
<a name="l04561"></a>04561 s2 = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *) src.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(scanLineIdx+2);
<a name="l04562"></a>04562 *q++=(*(cTable+(*s1)));
<a name="l04563"></a>04563 ++p;
<a name="l04564"></a>04564 ++s0;
<a name="l04565"></a>04565 ++s1;
<a name="l04566"></a>04566 ++s2;
<a name="l04567"></a>04567 <span class="keywordflow">for</span>(x=1; x < src.<a class="codeRef" href="qimage.html#width">width</a>()-1; ++x){
<a name="l04568"></a>04568 <span class="comment">// determine the surface normal and compute shading.</span>
<a name="l04569"></a>04569 normal.x=intensityValue(*(cTable+(*(s0-1))))+intensityValue(*(cTable+(*(s1-1))))+intensityValue(*(cTable+(*(s2-1))))-
<a name="l04570"></a>04570 (double) intensityValue(*(cTable+(*(s0+1))))-(<span class="keywordtype">double</span>) intensityValue(*(cTable+(*(s1+1))))-
<a name="l04571"></a>04571 (double) intensityValue(*(cTable+(*(s2+1))));
<a name="l04572"></a>04572 normal.y=intensityValue(*(cTable+(*(s2-1))))+intensityValue(*(cTable+(*s2)))+intensityValue(*(cTable+(*(s2+1))))-
<a name="l04573"></a>04573 (double) intensityValue(*(cTable+(*(s0-1))))-(<span class="keywordtype">double</span>) intensityValue(*(cTable+(*s0)))-
<a name="l04574"></a>04574 (double) intensityValue(*(cTable+(*(s0+1))));
<a name="l04575"></a>04575 <span class="keywordflow">if</span>((normal.x == 0) && (normal.y == 0))
<a name="l04576"></a>04576 shade=light.z;
<a name="l04577"></a>04577 <span class="keywordflow">else</span>{
<a name="l04578"></a>04578 shade=0.0;
<a name="l04579"></a>04579 distance=normal.x*light.x+normal.y*light.y+normal.z*light.z;
<a name="l04580"></a>04580 <span class="keywordflow">if</span> (distance > 0.0){
<a name="l04581"></a>04581 normal_distance=
<a name="l04582"></a>04582 normal.x*normal.x+normal.y*normal.y+normal.z*normal.z;
<a name="l04583"></a>04583 <span class="keywordflow">if</span>(fabs(normal_distance) > 0.0000001)
<a name="l04584"></a>04584 shade=distance/sqrt(normal_distance);
<a name="l04585"></a>04585 }
<a name="l04586"></a>04586 }
<a name="l04587"></a>04587 <span class="keywordflow">if</span>(!color_shading){
<a name="l04588"></a>04588 *q = qRgba((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(shade),
<a name="l04589"></a>04589 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(shade),
<a name="l04590"></a>04590 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)(shade),
<a name="l04591"></a>04591 qAlpha(*(cTable+(*s1))));
<a name="l04592"></a>04592 }
<a name="l04593"></a>04593 <span class="keywordflow">else</span>{
<a name="l04594"></a>04594 *q = qRgba((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)((shade*qRed(*(cTable+(*s1))))/(MaxRGB+1)),
<a name="l04595"></a>04595 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)((shade*qGreen(*(cTable+(*s1))))/(MaxRGB+1)),
<a name="l04596"></a>04596 (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)((shade*qBlue(*(cTable+(*s1))))/(MaxRGB+1)),
<a name="l04597"></a>04597 qAlpha(*s1));
<a name="l04598"></a>04598 }
<a name="l04599"></a>04599 ++s0;
<a name="l04600"></a>04600 ++s1;
<a name="l04601"></a>04601 ++s2;
<a name="l04602"></a>04602 q++;
<a name="l04603"></a>04603 }
<a name="l04604"></a>04604 *q++=(*(cTable+(*s1)));
<a name="l04605"></a>04605 }
<a name="l04606"></a>04606 }
<a name="l04607"></a>04607 <span class="keywordflow">return</span>(dest);
<a name="l04608"></a>04608 }
<a name="l04609"></a>04609
<a name="l04610"></a>04610 <span class="comment">// High quality, expensive HSV contrast. You can do a faster one by just</span>
<a name="l04611"></a>04611 <span class="comment">// taking a grayscale threshold (ie: 128) and incrementing RGB color</span>
<a name="l04612"></a>04612 <span class="comment">// channels above it and decrementing those below it, but this gives much</span>
<a name="l04613"></a>04613 <span class="comment">// better results. (mosfet 12/28/01)</span>
<a name="l04614"></a><a class="code" href="classKImageEffect.html#a20cd750fecf3222a1929836d279fa0db">04614</a> <span class="keywordtype">void</span> <a class="code" href="classKImageEffect.html#a20cd750fecf3222a1929836d279fa0db" title="High quality, expensive HSV contrast.">KImageEffect::contrastHSV</a>(<a class="codeRef" href="qimage.html">QImage</a> &img, <span class="keywordtype">bool</span> sharpen)
<a name="l04615"></a>04615 {
<a name="l04616"></a>04616 <span class="keywordtype">int</span> i, sign;
<a name="l04617"></a>04617 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *data;
<a name="l04618"></a>04618 <span class="keywordtype">int</span> count;
<a name="l04619"></a>04619 <span class="keywordtype">double</span> brightness, scale, theta;
<a name="l04620"></a>04620 <a class="codeRef" href="qcolor.html">QColor</a> c;
<a name="l04621"></a>04621 <span class="keywordtype">int</span> h, s, v;
<a name="l04622"></a>04622
<a name="l04623"></a>04623 sign = sharpen ? 1 : -1;
<a name="l04624"></a>04624 scale=0.5000000000000001;
<a name="l04625"></a>04625 <span class="keywordflow">if</span>(img.<a class="codeRef" href="qimage.html#depth">depth</a>() > 8){
<a name="l04626"></a>04626 count = img.<a class="codeRef" href="qimage.html#width">width</a>()*img.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l04627"></a>04627 data = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)img.<a class="codeRef" href="qimage.html#bits">bits</a>();
<a name="l04628"></a>04628 }
<a name="l04629"></a>04629 <span class="keywordflow">else</span>{
<a name="l04630"></a>04630 count = img.<a class="codeRef" href="qimage.html#numColors">numColors</a>();
<a name="l04631"></a>04631 data = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *)img.<a class="codeRef" href="qimage.html#colorTable">colorTable</a>();
<a name="l04632"></a>04632 }
<a name="l04633"></a>04633 <span class="keywordflow">for</span>(i=0; i < count; ++i){
<a name="l04634"></a>04634 c.<a class="codeRef" href="qcolor.html#setRgb">setRgb</a>(data[i]);
<a name="l04635"></a>04635 c.<a class="codeRef" href="qcolor.html#hsv">hsv</a>(&h, &s, &v);
<a name="l04636"></a>04636 brightness = v/255.0;
<a name="l04637"></a>04637 theta=(brightness-0.5)*M_PI;
<a name="l04638"></a>04638 brightness+=scale*(((scale*((sin(theta)+1.0)))-brightness)*sign);
<a name="l04639"></a>04639 <span class="keywordflow">if</span> (brightness > 1.0)
<a name="l04640"></a>04640 brightness=1.0;
<a name="l04641"></a>04641 <span class="keywordflow">else</span>
<a name="l04642"></a>04642 <span class="keywordflow">if</span> (brightness < 0)
<a name="l04643"></a>04643 brightness=0.0;
<a name="l04644"></a>04644 v = (int)(brightness*255);
<a name="l04645"></a>04645 c.<a class="codeRef" href="qcolor.html#setHsv">setHsv</a>(h, s, v);
<a name="l04646"></a>04646 data[i] = qRgba(c.<a class="codeRef" href="qcolor.html#red">red</a>(), c.<a class="codeRef" href="qcolor.html#green">green</a>(), c.<a class="codeRef" href="qcolor.html#blue">blue</a>(), qAlpha(data[i]));
<a name="l04647"></a>04647 }
<a name="l04648"></a>04648 }
<a name="l04649"></a>04649
<a name="l04650"></a>04650
<a name="l04651"></a>04651 <span class="keyword">struct </span>BumpmapParams {
<a name="l04652"></a>04652 BumpmapParams( <span class="keywordtype">double</span> bm_azimuth, <span class="keywordtype">double</span> bm_elevation,
<a name="l04653"></a>04653 <span class="keywordtype">int</span> bm_depth, <a class="code" href="classKImageEffect.html#adb747b6aa5678afeec840564c16bc3dc" title="This enum lists possible bumpmapping implementations.">KImageEffect::BumpmapType</a> bm_type,
<a name="l04654"></a>04654 <span class="keywordtype">bool</span> invert ) {
<a name="l04655"></a>04655 <span class="comment">/* Convert to radians */</span>
<a name="l04656"></a>04656 <span class="keywordtype">double</span> azimuth = DegreesToRadians( bm_azimuth );
<a name="l04657"></a>04657 <span class="keywordtype">double</span> elevation = DegreesToRadians( bm_elevation );
<a name="l04658"></a>04658
<a name="l04659"></a>04659 <span class="comment">/* Calculate the light vector */</span>
<a name="l04660"></a>04660 lx = (int)( cos(azimuth) * cos(elevation) * 255.0 );
<a name="l04661"></a>04661 ly = (int)( sin(azimuth) * cos(elevation) * 255.0 );
<a name="l04662"></a>04662 <span class="keywordtype">int</span> lz = (int)( sin(elevation) * 255.0 );
<a name="l04663"></a>04663
<a name="l04664"></a>04664 <span class="comment">/* Calculate constant Z component of surface normal */</span>
<a name="l04665"></a>04665 <span class="keywordtype">int</span> nz = (6 * 255) / bm_depth;
<a name="l04666"></a>04666 nz2 = nz * nz;
<a name="l04667"></a>04667 nzlz = nz * lz;
<a name="l04668"></a>04668
<a name="l04669"></a>04669 <span class="comment">/* Optimize for vertical normals */</span>
<a name="l04670"></a>04670 background = lz;
<a name="l04671"></a>04671
<a name="l04672"></a>04672 <span class="comment">/* Calculate darkness compensation factor */</span>
<a name="l04673"></a>04673 compensation = sin(elevation);
<a name="l04674"></a>04674
<a name="l04675"></a>04675 <span class="comment">/* Create look-up table for map type */</span>
<a name="l04676"></a>04676 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < 256; i++)
<a name="l04677"></a>04677 {
<a name="l04678"></a>04678 <span class="keywordtype">double</span> n = 0;
<a name="l04679"></a>04679 <span class="keywordflow">switch</span> (bm_type)
<a name="l04680"></a>04680 {
<a name="l04681"></a>04681 <span class="keywordflow">case</span> KImageEffect::Spherical:
<a name="l04682"></a>04682 n = i / 255.0 - 1.0;
<a name="l04683"></a>04683 lut[i] = (int) (255.0 * sqrt(1.0 - n * n) + 0.5);
<a name="l04684"></a>04684 <span class="keywordflow">break</span>;
<a name="l04685"></a>04685
<a name="l04686"></a>04686 <span class="keywordflow">case</span> KImageEffect::Sinuosidal:
<a name="l04687"></a>04687 n = i / 255.0;
<a name="l04688"></a>04688 lut[i] = (int) (255.0 * (sin((-M_PI / 2.0) + M_PI * n) + 1.0) /
<a name="l04689"></a>04689 2.0 + 0.5);
<a name="l04690"></a>04690 <span class="keywordflow">break</span>;
<a name="l04691"></a>04691
<a name="l04692"></a>04692 <span class="keywordflow">case</span> KImageEffect::Linear:
<a name="l04693"></a>04693 <span class="keywordflow">default</span>:
<a name="l04694"></a>04694 lut[i] = i;
<a name="l04695"></a>04695 }
<a name="l04696"></a>04696
<a name="l04697"></a>04697 <span class="keywordflow">if</span> (invert)
<a name="l04698"></a>04698 lut[i] = 255 - lut[i];
<a name="l04699"></a>04699 }
<a name="l04700"></a>04700 }
<a name="l04701"></a>04701 <span class="keywordtype">int</span> lx, ly;
<a name="l04702"></a>04702 <span class="keywordtype">int</span> nz2, nzlz;
<a name="l04703"></a>04703 <span class="keywordtype">int</span> background;
<a name="l04704"></a>04704 <span class="keywordtype">double</span> compensation;
<a name="l04705"></a>04705 uchar lut[256];
<a name="l04706"></a>04706 };
<a name="l04707"></a>04707
<a name="l04708"></a>04708
<a name="l04709"></a>04709 <span class="keyword">static</span> <span class="keywordtype">void</span> bumpmap_convert_row( uint *row,
<a name="l04710"></a>04710 <span class="keywordtype">int</span> width,
<a name="l04711"></a>04711 <span class="keywordtype">int</span> bpp,
<a name="l04712"></a>04712 <span class="keywordtype">int</span> has_alpha,
<a name="l04713"></a>04713 uchar *lut,
<a name="l04714"></a>04714 <span class="keywordtype">int</span> waterlevel )
<a name="l04715"></a>04715 {
<a name="l04716"></a>04716 uint *p;
<a name="l04717"></a>04717
<a name="l04718"></a>04718 p = row;
<a name="l04719"></a>04719
<a name="l04720"></a>04720 has_alpha = has_alpha ? 1 : 0;
<a name="l04721"></a>04721
<a name="l04722"></a>04722 <span class="keywordflow">if</span> (bpp >= 3)
<a name="l04723"></a>04723 <span class="keywordflow">for</span> (; width; width--)
<a name="l04724"></a>04724 {
<a name="l04725"></a>04725 <span class="keywordflow">if</span> (has_alpha) {
<a name="l04726"></a>04726 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> idx = (<span class="keywordtype">unsigned</span> int)(intensityValue( *row ) + 0.5);
<a name="l04727"></a>04727 *p++ = lut[(<span class="keywordtype">unsigned</span> int) ( waterlevel +
<a name="l04728"></a>04728 ( ( idx -
<a name="l04729"></a>04729 waterlevel) * qBlue( *row )) / 255.0 )];
<a name="l04730"></a>04730 } <span class="keywordflow">else</span> {
<a name="l04731"></a>04731 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> idx = (<span class="keywordtype">unsigned</span> int)(intensityValue( *row ) + 0.5);
<a name="l04732"></a>04732 *p++ = lut[idx];
<a name="l04733"></a>04733 }
<a name="l04734"></a>04734
<a name="l04735"></a>04735 ++row;
<a name="l04736"></a>04736 }
<a name="l04737"></a>04737 }
<a name="l04738"></a>04738
<a name="l04739"></a>04739 <span class="keyword">static</span> <span class="keywordtype">void</span> bumpmap_row( uint *src,
<a name="l04740"></a>04740 uint *dest,
<a name="l04741"></a>04741 <span class="keywordtype">int</span> width,
<a name="l04742"></a>04742 <span class="keywordtype">int</span> bpp,
<a name="l04743"></a>04743 <span class="keywordtype">int</span> has_alpha,
<a name="l04744"></a>04744 uint *bm_row1,
<a name="l04745"></a>04745 uint *bm_row2,
<a name="l04746"></a>04746 uint *bm_row3,
<a name="l04747"></a>04747 <span class="keywordtype">int</span> bm_width,
<a name="l04748"></a>04748 <span class="keywordtype">int</span> bm_xofs,
<a name="l04749"></a>04749 <span class="keywordtype">bool</span> tiled,
<a name="l04750"></a>04750 <span class="keywordtype">bool</span> row_in_bumpmap,
<a name="l04751"></a>04751 <span class="keywordtype">int</span> ambient,
<a name="l04752"></a>04752 <span class="keywordtype">bool</span> compensate,
<a name="l04753"></a>04753 BumpmapParams *params )
<a name="l04754"></a>04754 {
<a name="l04755"></a>04755 <span class="keywordtype">int</span> xofs1, xofs2, xofs3;
<a name="l04756"></a>04756 <span class="keywordtype">int</span> shade;
<a name="l04757"></a>04757 <span class="keywordtype">int</span> ndotl;
<a name="l04758"></a>04758 <span class="keywordtype">int</span> nx, ny;
<a name="l04759"></a>04759 <span class="keywordtype">int</span> x;
<a name="l04760"></a>04760 <span class="keywordtype">int</span> tmp;
<a name="l04761"></a>04761
<a name="l04762"></a>04762 tmp = bm_xofs;
<a name="l04763"></a>04763 xofs2 = MOD(tmp, bm_width);
<a name="l04764"></a>04764
<a name="l04765"></a>04765 <span class="keywordflow">for</span> (x = 0; x < width; x++)
<a name="l04766"></a>04766 {
<a name="l04767"></a>04767 <span class="comment">/* Calculate surface normal from bump map */</span>
<a name="l04768"></a>04768
<a name="l04769"></a>04769 <span class="keywordflow">if</span> (tiled || (row_in_bumpmap &&
<a name="l04770"></a>04770 x >= - tmp && x < - tmp + bm_width)) {
<a name="l04771"></a>04771 <span class="keywordflow">if</span> (tiled) {
<a name="l04772"></a>04772 xofs1 = MOD(xofs2 - 1, bm_width);
<a name="l04773"></a>04773 xofs3 = MOD(xofs2 + 1, bm_width);
<a name="l04774"></a>04774 } <span class="keywordflow">else</span> {
<a name="l04775"></a>04775 xofs1 = <a class="code" href="kimageeffect_8cpp.html#a7d71bc979aa1eff2255a4b3eaed4943f">FXCLAMP</a>(xofs2 - 1, 0, bm_width - 1);
<a name="l04776"></a>04776 xofs3 = <a class="code" href="kimageeffect_8cpp.html#a7d71bc979aa1eff2255a4b3eaed4943f">FXCLAMP</a>(xofs2 + 1, 0, bm_width - 1);
<a name="l04777"></a>04777 }
<a name="l04778"></a>04778 nx = (bm_row1[xofs1] + bm_row2[xofs1] + bm_row3[xofs1] -
<a name="l04779"></a>04779 bm_row1[xofs3] - bm_row2[xofs3] - bm_row3[xofs3]);
<a name="l04780"></a>04780 ny = (bm_row3[xofs1] + bm_row3[xofs2] + bm_row3[xofs3] -
<a name="l04781"></a>04781 bm_row1[xofs1] - bm_row1[xofs2] - bm_row1[xofs3]);
<a name="l04782"></a>04782 } <span class="keywordflow">else</span> {
<a name="l04783"></a>04783 nx = ny = 0;
<a name="l04784"></a>04784 }
<a name="l04785"></a>04785
<a name="l04786"></a>04786 <span class="comment">/* Shade */</span>
<a name="l04787"></a>04787
<a name="l04788"></a>04788 <span class="keywordflow">if</span> ((nx == 0) && (ny == 0))
<a name="l04789"></a>04789 shade = params->background;
<a name="l04790"></a>04790 <span class="keywordflow">else</span> {
<a name="l04791"></a>04791 ndotl = nx * params->lx + ny * params->ly + params->nzlz;
<a name="l04792"></a>04792
<a name="l04793"></a>04793 <span class="keywordflow">if</span> (ndotl < 0)
<a name="l04794"></a>04794 shade = (int)( params->compensation * ambient );
<a name="l04795"></a>04795 <span class="keywordflow">else</span> {
<a name="l04796"></a>04796 shade = (int)( ndotl / sqrt(<span class="keywordtype">double</span>(nx * nx + ny * ny + params->nz2)) );
<a name="l04797"></a>04797
<a name="l04798"></a>04798 shade = (int)( shade + QMAX(0.0, (255 * params->compensation - shade)) *
<a name="l04799"></a>04799 ambient / 255 );
<a name="l04800"></a>04800 }
<a name="l04801"></a>04801 }
<a name="l04802"></a>04802
<a name="l04803"></a>04803 <span class="comment">/* Paint */</span>
<a name="l04804"></a>04804
<a name="l04809"></a>04809 <span class="keywordflow">if</span> (compensate) {
<a name="l04810"></a>04810 <span class="keywordtype">int</span> red = (int)((qRed( *src ) * shade) / (params->compensation * 255));
<a name="l04811"></a>04811 <span class="keywordtype">int</span> green = (int)((qGreen( *src ) * shade) / (params->compensation * 255));
<a name="l04812"></a>04812 <span class="keywordtype">int</span> blue = (int)((qBlue( *src ) * shade) / (params->compensation * 255));
<a name="l04813"></a>04813 <span class="keywordtype">int</span> alpha = (int)((qAlpha( *src ) * shade) / (params->compensation * 255));
<a name="l04814"></a>04814 ++src;
<a name="l04815"></a>04815 *dest++ = qRgba( red, green, blue, alpha );
<a name="l04816"></a>04816 } <span class="keywordflow">else</span> {
<a name="l04817"></a>04817 <span class="keywordtype">int</span> red = qRed( *src ) * shade / 255;
<a name="l04818"></a>04818 <span class="keywordtype">int</span> green = qGreen( *src ) * shade / 255;
<a name="l04819"></a>04819 <span class="keywordtype">int</span> blue = qBlue( *src ) * shade / 255;
<a name="l04820"></a>04820 <span class="keywordtype">int</span> alpha = qAlpha( *src ) * shade / 255;
<a name="l04821"></a>04821 ++src;
<a name="l04822"></a>04822 *dest++ = qRgba( red, green, blue, alpha );
<a name="l04823"></a>04823 }
<a name="l04824"></a>04824
<a name="l04825"></a>04825 <span class="comment">/* Next pixel */</span>
<a name="l04826"></a>04826
<a name="l04827"></a>04827 <span class="keywordflow">if</span> (++xofs2 == bm_width)
<a name="l04828"></a>04828 xofs2 = 0;
<a name="l04829"></a>04829 }
<a name="l04830"></a>04830 }
<a name="l04831"></a>04831
<a name="l04851"></a><a class="code" href="classKImageEffect.html#a388cd55b0af2c0a42c030e83eb71acc1">04851</a> <a class="codeRef" href="qimage.html">QImage</a> <a class="code" href="classKImageEffect.html#a388cd55b0af2c0a42c030e83eb71acc1" title="A bumpmapping algorithm.">KImageEffect::bumpmap</a>(<a class="codeRef" href="qimage.html">QImage</a> &img, <a class="codeRef" href="qimage.html">QImage</a> &map, <span class="keywordtype">double</span> azimuth, <span class="keywordtype">double</span> elevation,
<a name="l04852"></a>04852 <span class="keywordtype">int</span> depth, <span class="keywordtype">int</span> xofs, <span class="keywordtype">int</span> yofs, <span class="keywordtype">int</span> waterlevel,
<a name="l04853"></a>04853 <span class="keywordtype">int</span> ambient, <span class="keywordtype">bool</span> compensate, <span class="keywordtype">bool</span> invert,
<a name="l04854"></a>04854 <a class="code" href="classKImageEffect.html#adb747b6aa5678afeec840564c16bc3dc" title="This enum lists possible bumpmapping implementations.">BumpmapType</a> type, <span class="keywordtype">bool</span> tiled)
<a name="l04855"></a>04855 {
<a name="l04856"></a>04856 <a class="codeRef" href="qimage.html">QImage</a> dst;
<a name="l04857"></a>04857
<a name="l04858"></a>04858 <span class="keywordflow">if</span> ( img.<a class="codeRef" href="qimage.html#depth">depth</a>() != 32 || img.<a class="codeRef" href="qimage.html#depth">depth</a>() != 32 ) {
<a name="l04859"></a>04859 qWarning( <span class="stringliteral">"Bump-mapping effect works only with 32 bit images"</span>);
<a name="l04860"></a>04860 <span class="keywordflow">return</span> dst;
<a name="l04861"></a>04861 }
<a name="l04862"></a>04862
<a name="l04863"></a>04863 dst.<a class="codeRef" href="qimage.html#create">create</a>( img.<a class="codeRef" href="qimage.html#width">width</a>(), img.<a class="codeRef" href="qimage.html#height">height</a>(), img.<a class="codeRef" href="qimage.html#depth">depth</a>() );
<a name="l04864"></a>04864 <span class="keywordtype">int</span> bm_width = map.<a class="codeRef" href="qimage.html#width">width</a>();
<a name="l04865"></a>04865 <span class="keywordtype">int</span> bm_height = map.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l04866"></a>04866 <span class="keywordtype">int</span> bm_bpp = map.<a class="codeRef" href="qimage.html#depth">depth</a>();
<a name="l04867"></a>04867 <span class="keywordtype">int</span> bm_has_alpha = map.<a class="codeRef" href="qimage.html#hasAlphaBuffer">hasAlphaBuffer</a>();
<a name="l04868"></a>04868
<a name="l04869"></a>04869 <span class="keywordtype">int</span> yofs1, yofs2, yofs3;
<a name="l04870"></a>04870
<a name="l04871"></a>04871 <span class="keywordflow">if</span> ( tiled ) {
<a name="l04872"></a>04872 yofs2 = MOD( yofs, bm_height );
<a name="l04873"></a>04873 yofs1 = MOD( yofs2 - 1, bm_height);
<a name="l04874"></a>04874 yofs3 = MOD( yofs2 + 1, bm_height);
<a name="l04875"></a>04875 } <span class="keywordflow">else</span> {
<a name="l04876"></a>04876 yofs1 = 0;
<a name="l04877"></a>04877 yofs2 = 0;
<a name="l04878"></a>04878 yofs3 = <a class="code" href="kimageeffect_8cpp.html#a7d71bc979aa1eff2255a4b3eaed4943f">FXCLAMP</a>( yofs2+1, 0, bm_height - 1 );
<a name="l04879"></a>04879 }
<a name="l04880"></a>04880
<a name="l04881"></a>04881 BumpmapParams params( azimuth, elevation, depth, type, invert );
<a name="l04882"></a>04882
<a name="l04883"></a>04883 uint* bm_row1 = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>*)map.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>( yofs1 );
<a name="l04884"></a>04884 uint* bm_row2 = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>*)map.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>( yofs2 );
<a name="l04885"></a>04885 uint* bm_row3 = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>*)map.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>( yofs3 );
<a name="l04886"></a>04886
<a name="l04887"></a>04887 bumpmap_convert_row( bm_row1, bm_width, bm_bpp, bm_has_alpha, params.lut, waterlevel );
<a name="l04888"></a>04888 bumpmap_convert_row( bm_row2, bm_width, bm_bpp, bm_has_alpha, params.lut, waterlevel );
<a name="l04889"></a>04889 bumpmap_convert_row( bm_row3, bm_width, bm_bpp, bm_has_alpha, params.lut, waterlevel );
<a name="l04890"></a>04890
<a name="l04891"></a>04891 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> y = 0; y < img.<a class="codeRef" href="qimage.html#height">height</a>(); ++y)
<a name="l04892"></a>04892 {
<a name="l04893"></a>04893 <span class="keywordtype">int</span> row_in_bumpmap = (y >= - yofs && y < - yofs + bm_height);
<a name="l04894"></a>04894
<a name="l04895"></a>04895 uint* src_row = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>*)img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>( y );
<a name="l04896"></a>04896 uint* dest_row = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>*)dst.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>( y );
<a name="l04897"></a>04897
<a name="l04898"></a>04898 bumpmap_row( src_row, dest_row, img.<a class="codeRef" href="qimage.html#width">width</a>(), img.<a class="codeRef" href="qimage.html#depth">depth</a>(), img.<a class="codeRef" href="qimage.html#hasAlphaBuffer">hasAlphaBuffer</a>(),
<a name="l04899"></a>04899 bm_row1, bm_row2, bm_row3, bm_width, xofs,
<a name="l04900"></a>04900 tiled,
<a name="l04901"></a>04901 row_in_bumpmap, ambient, compensate,
<a name="l04902"></a>04902 &params );
<a name="l04903"></a>04903
<a name="l04904"></a>04904 <span class="comment">/* Next line */</span>
<a name="l04905"></a>04905
<a name="l04906"></a>04906 <span class="keywordflow">if</span> (tiled || row_in_bumpmap)
<a name="l04907"></a>04907 {
<a name="l04908"></a>04908 uint* bm_tmprow = bm_row1;
<a name="l04909"></a>04909 bm_row1 = bm_row2;
<a name="l04910"></a>04910 bm_row2 = bm_row3;
<a name="l04911"></a>04911 bm_row3 = bm_tmprow;
<a name="l04912"></a>04912
<a name="l04913"></a>04913 <span class="keywordflow">if</span> (++yofs2 == bm_height)
<a name="l04914"></a>04914 yofs2 = 0;
<a name="l04915"></a>04915
<a name="l04916"></a>04916 <span class="keywordflow">if</span> (tiled)
<a name="l04917"></a>04917 yofs3 = MOD(yofs2 + 1, bm_height);
<a name="l04918"></a>04918 <span class="keywordflow">else</span>
<a name="l04919"></a>04919 yofs3 = <a class="code" href="kimageeffect_8cpp.html#a7d71bc979aa1eff2255a4b3eaed4943f">FXCLAMP</a>(yofs2 + 1, 0, bm_height - 1);
<a name="l04920"></a>04920
<a name="l04921"></a>04921 bm_row3 = (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>*)map.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>( yofs3 );
<a name="l04922"></a>04922 bumpmap_convert_row( bm_row3, bm_width, bm_bpp, bm_has_alpha,
<a name="l04923"></a>04923 params.lut, waterlevel );
<a name="l04924"></a>04924 }
<a name="l04925"></a>04925 }
<a name="l04926"></a>04926 <span class="keywordflow">return</span> dst;
<a name="l04927"></a>04927 }
</pre></div></div>
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