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<div class="title">ksharedpixmap.cpp</div> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* vi: ts=8 sts=4 sw=4</span>
<a name="l00002"></a>00002 <span class="comment"> *</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * This file is part of the KDE libraries.</span>
<a name="l00005"></a>00005 <span class="comment"> * Copyright (C) 1999,2000 Geert Jansen <jansen@kde.org></span>
<a name="l00006"></a>00006 <span class="comment"> *</span>
<a name="l00007"></a>00007 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
<a name="l00008"></a>00008 <span class="comment"> * modify it under the terms of the GNU Library General Public</span>
<a name="l00009"></a>00009 <span class="comment"> * License as published by the Free Software Foundation; either</span>
<a name="l00010"></a>00010 <span class="comment"> * version 2 of the License, or (at your option) any later version.</span>
<a name="l00011"></a>00011 <span class="comment"> *</span>
<a name="l00012"></a>00012 <span class="comment"> * Shared pixmap client for KDE.</span>
<a name="l00013"></a>00013 <span class="comment"> */</span>
<a name="l00014"></a>00014 <span class="preprocessor">#include "config.h"</span>
<a name="l00015"></a>00015
<a name="l00016"></a>00016 <span class="preprocessor">#include <qrect.h></span>
<a name="l00017"></a>00017 <span class="preprocessor">#include <qsize.h></span>
<a name="l00018"></a>00018 <span class="preprocessor">#include <qstring.h></span>
<a name="l00019"></a>00019 <span class="preprocessor">#include <qpixmap.h></span>
<a name="l00020"></a>00020 <span class="preprocessor">#include <qwindowdefs.h></span>
<a name="l00021"></a>00021 <span class="preprocessor">#include <qwidget.h></span>
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="preprocessor">#ifdef Q_WS_X11</span>
<a name="l00024"></a>00024 <span class="preprocessor"></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <kapplication.h></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <krootprop.h></span>
<a name="l00027"></a>00027 <span class="preprocessor">#include <ksharedpixmap.h></span>
<a name="l00028"></a>00028 <span class="preprocessor">#include <kdebug.h></span>
<a name="l00029"></a>00029 <span class="preprocessor">#include <stdlib.h></span> <span class="comment">// for abs</span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="preprocessor">#include <X11/Xlib.h></span>
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="comment">// Make sure to include all this X-based shit before we clean up the mess.</span>
<a name="l00034"></a>00034 <span class="comment">// Needed for --enable-final. Not needed by this file itself!</span>
<a name="l00035"></a>00035 <span class="preprocessor">#include <X11/Xutil.h></span>
<a name="l00036"></a>00036 <span class="preprocessor">#ifdef HAVE_MITSHM</span>
<a name="l00037"></a>00037 <span class="preprocessor"></span><span class="preprocessor">#include <X11/extensions/XShm.h></span>
<a name="l00038"></a>00038 <span class="preprocessor">#endif</span>
<a name="l00039"></a>00039 <span class="preprocessor"></span>
<a name="l00040"></a>00040 <span class="preprocessor">#include <netwm.h></span>
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <span class="comment">// Clean up the mess</span>
<a name="l00043"></a>00043
<a name="l00044"></a>00044 <span class="preprocessor">#undef Bool</span>
<a name="l00045"></a>00045 <span class="preprocessor"></span><span class="preprocessor">#undef Above</span>
<a name="l00046"></a>00046 <span class="preprocessor"></span><span class="preprocessor">#undef Below</span>
<a name="l00047"></a>00047 <span class="preprocessor"></span><span class="preprocessor">#undef KeyPress</span>
<a name="l00048"></a>00048 <span class="preprocessor"></span><span class="preprocessor">#undef KeyRelease</span>
<a name="l00049"></a>00049 <span class="preprocessor"></span><span class="preprocessor">#undef FocusOut</span>
<a name="l00050"></a>00050 <span class="preprocessor"></span>
<a name="l00055"></a>00055 <span class="keyword">class </span>KSharedPixmapPrivate
<a name="l00056"></a>00056 {
<a name="l00057"></a>00057 <span class="keyword">public</span>:
<a name="l00058"></a>00058 Atom pixmap;
<a name="l00059"></a>00059 Atom target;
<a name="l00060"></a>00060 Atom selection;
<a name="l00061"></a>00061 <a class="codeRef" href="qrect.html">QRect</a> rect;
<a name="l00062"></a>00062 };
<a name="l00063"></a>00063
<a name="l00064"></a>00064 KSharedPixmap::KSharedPixmap()
<a name="l00065"></a>00065 : <a class="codeRef" href="qwidget.html">QWidget</a>(0L, <span class="stringliteral">"shpixmap comm window"</span>)
<a name="l00066"></a>00066 {
<a name="l00067"></a>00067 d = <span class="keyword">new</span> KSharedPixmapPrivate;
<a name="l00068"></a>00068 init();
<a name="l00069"></a>00069 }
<a name="l00070"></a>00070
<a name="l00071"></a>00071
<a name="l00072"></a>00072 KSharedPixmap::~KSharedPixmap()
<a name="l00073"></a>00073 {
<a name="l00074"></a>00074 <span class="keyword">delete</span> d;
<a name="l00075"></a>00075 }
<a name="l00076"></a>00076
<a name="l00077"></a>00077
<a name="l00078"></a>00078 <span class="keywordtype">void</span> KSharedPixmap::init()
<a name="l00079"></a>00079 {
<a name="l00080"></a>00080 d->pixmap = XInternAtom(qt_xdisplay(), <span class="stringliteral">"PIXMAP"</span>, <span class="keyword">false</span>);
<a name="l00081"></a>00081 <a class="codeRef" href="qcstring.html">QCString</a> atom;
<a name="l00082"></a>00082 atom.<a class="codeRef" href="qcstring.html#sprintf">sprintf</a>(<span class="stringliteral">"target prop for window %lx"</span>, static_cast<unsigned long int>(winId()));
<a name="l00083"></a>00083 d->target = XInternAtom(qt_xdisplay(), atom.data(), <span class="keyword">false</span>);
<a name="l00084"></a>00084 d->selection = None;
<a name="l00085"></a>00085 }
<a name="l00086"></a>00086
<a name="l00087"></a>00087
<a name="l00088"></a>00088 <span class="keywordtype">bool</span> KSharedPixmap::isAvailable(<span class="keyword">const</span> <a class="codeRef" href="qstring.html">QString</a> & name)<span class="keyword"> const</span>
<a name="l00089"></a>00089 <span class="keyword"></span>{
<a name="l00090"></a>00090 <a class="codeRef" href="qstring.html">QString</a> str = <a class="codeRef" href="qstring.html">QString</a>(<span class="stringliteral">"KDESHPIXMAP:%1"</span>).<a class="codeRef" href="qstring.html#arg">arg</a>(name);
<a name="l00091"></a>00091 Atom sel = XInternAtom(qt_xdisplay(), str.<a class="codeRef" href="qstring.html#latin1">latin1</a>(), <span class="keyword">true</span>);
<a name="l00092"></a>00092 <span class="keywordflow">if</span> (sel == None)
<a name="l00093"></a>00093 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00094"></a>00094 <span class="keywordflow">return</span> XGetSelectionOwner(qt_xdisplay(), sel) != None;
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096
<a name="l00097"></a>00097
<a name="l00098"></a>00098 <span class="keywordtype">bool</span> KSharedPixmap::loadFromShared(<span class="keyword">const</span> <a class="codeRef" href="qstring.html">QString</a> & name, <span class="keyword">const</span> <a class="codeRef" href="qrect.html">QRect</a> & rect)
<a name="l00099"></a>00099 {
<a name="l00100"></a>00100 d->rect = rect;
<a name="l00101"></a>00101 <span class="keywordflow">if</span> (d->selection != None)
<a name="l00102"></a>00102 <span class="comment">// already active</span>
<a name="l00103"></a>00103 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00104"></a>00104
<a name="l00105"></a>00105 <a class="codeRef" href="qpixmap.html#resize">QPixmap::resize</a>(0, 0); <span class="comment">// invalidate</span>
<a name="l00106"></a>00106
<a name="l00107"></a>00107 <a class="codeRef" href="qstring.html">QString</a> str = <a class="codeRef" href="qstring.html">QString</a>(<span class="stringliteral">"KDESHPIXMAP:%1"</span>).<a class="codeRef" href="qstring.html#arg">arg</a>(name);
<a name="l00108"></a>00108 d->selection = XInternAtom(qt_xdisplay(), str.<a class="codeRef" href="qstring.html#latin1">latin1</a>(), <span class="keyword">true</span>);
<a name="l00109"></a>00109 <span class="keywordflow">if</span> (d->selection == None)
<a name="l00110"></a>00110 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00111"></a>00111 <span class="keywordflow">if</span> (XGetSelectionOwner(qt_xdisplay(), d->selection) == None)
<a name="l00112"></a>00112 {
<a name="l00113"></a>00113 d->selection = None;
<a name="l00114"></a>00114 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00115"></a>00115 }
<a name="l00116"></a>00116
<a name="l00117"></a>00117 XConvertSelection(qt_xdisplay(), d->selection, d->pixmap, d->target,
<a name="l00118"></a>00118 winId(), CurrentTime);
<a name="l00119"></a>00119 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00120"></a>00120 }
<a name="l00121"></a>00121
<a name="l00122"></a>00122
<a name="l00123"></a>00123 <span class="keywordtype">bool</span> KSharedPixmap::x11Event(XEvent *event)
<a name="l00124"></a>00124 {
<a name="l00125"></a>00125 <span class="keywordflow">if</span> (event->type != SelectionNotify)
<a name="l00126"></a>00126 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00127"></a>00127
<a name="l00128"></a>00128 XSelectionEvent *ev = &<span class="keyword">event</span>->xselection;
<a name="l00129"></a>00129 <span class="keywordflow">if</span> (ev->selection != d->selection)
<a name="l00130"></a>00130 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="keywordflow">if</span> ((ev->target != d->pixmap) || (ev->property == None))
<a name="l00133"></a>00133 {
<a name="l00134"></a>00134 <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/group__kdebug.html#ga9acd682001598171edf8ecb104fdad2b">kdWarning</a>(270) << <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/group__kdebug.html#ga634e2de2b699b31ea3a79f984e836d64">k_funcinfo</a> << <span class="stringliteral">"illegal selection notify event.\n"</span>;
<a name="l00135"></a>00135 d->selection = None;
<a name="l00136"></a>00136 emit done(<span class="keyword">false</span>);
<a name="l00137"></a>00137 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00138"></a>00138 }
<a name="l00139"></a>00139
<a name="l00140"></a>00140 <span class="comment">// Read pixmap handle from ev->property</span>
<a name="l00141"></a>00141
<a name="l00142"></a>00142 <span class="keywordtype">int</span> dummy, format;
<a name="l00143"></a>00143 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> nitems, ldummy;
<a name="l00144"></a>00144 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *pixmap_id = 0;
<a name="l00145"></a>00145 Atom type;
<a name="l00146"></a>00146
<a name="l00147"></a>00147 XGetWindowProperty(qt_xdisplay(), winId(), ev->property, 0, 1, <span class="keyword">false</span>,
<a name="l00148"></a>00148 d->pixmap, &type, &format, &nitems, &ldummy,
<a name="l00149"></a>00149 &pixmap_id);
<a name="l00150"></a>00150
<a name="l00151"></a>00151 <span class="keywordflow">if</span> (nitems != 1 || !pixmap_id)
<a name="l00152"></a>00152 {
<a name="l00153"></a>00153 <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/group__kdebug.html#ga9acd682001598171edf8ecb104fdad2b">kdWarning</a>(270) << <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/group__kdebug.html#ga634e2de2b699b31ea3a79f984e836d64">k_funcinfo</a> << <span class="stringliteral">"could not read property, nitems = "</span> << nitems << <span class="stringliteral">"\n"</span>;
<a name="l00154"></a>00154 emit done(<span class="keyword">false</span>);
<a name="l00155"></a>00155 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00156"></a>00156 }
<a name="l00157"></a>00157
<a name="l00158"></a>00158 Window root;
<a name="l00159"></a>00159 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> width, height, udummy;
<a name="l00160"></a>00160 <span class="keywordtype">void</span> *drawable_id = (<span class="keywordtype">void</span> *) pixmap_id;
<a name="l00161"></a>00161 Drawable pixmap = *(Drawable*) drawable_id;
<a name="l00162"></a>00162
<a name="l00163"></a>00163 Status status = XGetGeometry(qt_xdisplay(), pixmap, &root, &dummy, &dummy, &width, &height, &udummy, &udummy);
<a name="l00164"></a>00164
<a name="l00165"></a>00165 <span class="keywordflow">if</span> (status == BadDrawable)
<a name="l00166"></a>00166 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00167"></a>00167
<a name="l00168"></a>00168 <span class="keywordflow">if</span> (d->rect.isEmpty())
<a name="l00169"></a>00169 {
<a name="l00170"></a>00170 <a class="codeRef" href="qpixmap.html#resize">QPixmap::resize</a>(width, height);
<a name="l00171"></a>00171 XCopyArea(qt_xdisplay(), pixmap, ((<a class="codeRef" doxygen="kdefx.tag:../../kdefx/html/" href="../../kdefx/html/classKPixmap.html">KPixmap</a>*)<span class="keyword">this</span>)->handle(), qt_xget_temp_gc(qt_xscreen(), <span class="keyword">false</span>),
<a name="l00172"></a>00172 0, 0, width, height, 0, 0);
<a name="l00173"></a>00173
<a name="l00174"></a>00174 XFree(pixmap_id);
<a name="l00175"></a>00175 XDeleteProperty(qt_xdisplay(), winId(), ev->property);
<a name="l00176"></a>00176 d->selection = None;
<a name="l00177"></a>00177 emit done(<span class="keyword">true</span>);
<a name="l00178"></a>00178 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00179"></a>00179 }
<a name="l00180"></a>00180
<a name="l00181"></a>00181 <span class="comment">// Do some more processing here: Generate a tile that can be used as a</span>
<a name="l00182"></a>00182 <span class="comment">// background tile for the rectangle "rect".</span>
<a name="l00183"></a>00183
<a name="l00184"></a>00184 <span class="comment">//Check for origin off screen</span>
<a name="l00185"></a>00185 <a class="codeRef" href="qpoint.html">QPoint</a> origin(0, 0);
<a name="l00186"></a>00186 <span class="keywordflow">if</span>( d->rect.topLeft().x() < 0 || d->rect.topLeft().y() < 0 ) {
<a name="l00187"></a>00187 <span class="comment">//Save the offset and relocate the rect corners</span>
<a name="l00188"></a>00188 <a class="codeRef" href="qpoint.html">QPoint</a> tl = d->rect.topLeft();
<a name="l00189"></a>00189 <a class="codeRef" href="qpoint.html">QPoint</a> br = d->rect.bottomRight();
<a name="l00190"></a>00190 <span class="keywordflow">if</span>( tl.<a class="codeRef" href="qpoint.html#x">x</a>() < 0 ) {
<a name="l00191"></a>00191 origin.<a class="codeRef" href="qpoint.html#setX">setX</a>( abs( tl.<a class="codeRef" href="qpoint.html#x">x</a>() ) );
<a name="l00192"></a>00192 tl.<a class="codeRef" href="qpoint.html#setX">setX</a>( 0 );
<a name="l00193"></a>00193 }
<a name="l00194"></a>00194 <span class="keywordflow">if</span>( tl.<a class="codeRef" href="qpoint.html#y">y</a>() < 0 ) {
<a name="l00195"></a>00195 origin.setY( abs( tl.<a class="codeRef" href="qpoint.html#y">y</a>() ) );
<a name="l00196"></a>00196 tl.<a class="codeRef" href="qpoint.html#setY">setY</a>( 0 );
<a name="l00197"></a>00197 }
<a name="l00198"></a>00198 <a class="codeRef" href="qrect.html">QRect</a> adjustedRect( tl, br );
<a name="l00199"></a>00199 d->rect = adjustedRect;
<a name="l00200"></a>00200 }
<a name="l00201"></a>00201
<a name="l00202"></a>00202 <span class="keywordtype">unsigned</span> w = d->rect.width(), h = d->rect.height();
<a name="l00203"></a>00203 <span class="keywordtype">unsigned</span> tw = QMIN(width, w), th = QMIN(height, h);
<a name="l00204"></a>00204 <span class="keywordtype">unsigned</span> xa = d->rect.x() % width, ya = d->rect.y() % height;
<a name="l00205"></a>00205 <span class="keywordtype">unsigned</span> t1w = QMIN(width-xa,tw), t1h = QMIN(height-ya,th);
<a name="l00206"></a>00206
<a name="l00207"></a>00207 <a class="codeRef" href="qpixmap.html#resize">QPixmap::resize</a>( tw+origin.x(), th+origin.y() );
<a name="l00208"></a>00208
<a name="l00209"></a>00209 XCopyArea(qt_xdisplay(), pixmap, ((<a class="codeRef" doxygen="kdefx.tag:../../kdefx/html/" href="../../kdefx/html/classKPixmap.html">KPixmap</a>*)<span class="keyword">this</span>)->handle(), qt_xget_temp_gc(qt_xscreen(), <span class="keyword">false</span>),
<a name="l00210"></a>00210 xa, ya, t1w+origin.x(), t1h+origin.y(), origin.x(), origin.y() );
<a name="l00211"></a>00211 XCopyArea(qt_xdisplay(), pixmap, ((<a class="codeRef" doxygen="kdefx.tag:../../kdefx/html/" href="../../kdefx/html/classKPixmap.html">KPixmap</a>*)<span class="keyword">this</span>)->handle(), qt_xget_temp_gc(qt_xscreen(), <span class="keyword">false</span>),
<a name="l00212"></a>00212 0, ya, tw-t1w, t1h, t1w, 0);
<a name="l00213"></a>00213 XCopyArea(qt_xdisplay(), pixmap, ((<a class="codeRef" doxygen="kdefx.tag:../../kdefx/html/" href="../../kdefx/html/classKPixmap.html">KPixmap</a>*)<span class="keyword">this</span>)->handle(), qt_xget_temp_gc(qt_xscreen(), <span class="keyword">false</span>),
<a name="l00214"></a>00214 xa, 0, t1w, th-t1h, 0, t1h);
<a name="l00215"></a>00215 XCopyArea(qt_xdisplay(), pixmap, ((<a class="codeRef" doxygen="kdefx.tag:../../kdefx/html/" href="../../kdefx/html/classKPixmap.html">KPixmap</a>*)<span class="keyword">this</span>)->handle(), qt_xget_temp_gc(qt_xscreen(), <span class="keyword">false</span>),
<a name="l00216"></a>00216 0, 0, tw-t1w, th-t1h, t1w, t1h);
<a name="l00217"></a>00217
<a name="l00218"></a>00218 XFree(pixmap_id);
<a name="l00219"></a>00219
<a name="l00220"></a>00220 d->selection = None;
<a name="l00221"></a>00221 XDeleteProperty(qt_xdisplay(), winId(), ev->property);
<a name="l00222"></a>00222 emit done(<span class="keyword">true</span>);
<a name="l00223"></a>00223 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00224"></a>00224 }
<a name="l00225"></a>00225
<a name="l00226"></a>00226
<a name="l00227"></a>00227 <span class="preprocessor">#include "ksharedpixmap.moc"</span>
<a name="l00228"></a>00228 <span class="preprocessor">#endif</span>
</pre></div></div>
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