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Breadcrumbs go here --> </ul> </div> <div class="toolbuttons toolblock"> <ul> <li id="smallA" class="t_button">A</li> <li id="medA" class="t_button active">A</li> <li id="bigA" class="t_button">A</li> <li id="print" class="t_button"><a href="javascript:this.print();"> <span>Print</span></a></li> </ul> </div> </div> <div class="content mainContent"> <h1 class="title">extrafiltersplugin.cpp Example File</h1> <span class="small-subtitle">tools/plugandpaintplugins/extrafilters/extrafiltersplugin.cpp</span> <!-- $$$tools/plugandpaintplugins/extrafilters/extrafiltersplugin.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/legal ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** You may use this file under the terms of the BSD license as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names ** of its contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include <QtGui></span> <span class="preprocessor">#include <math.h></span> <span class="preprocessor">#include <stdlib.h></span> <span class="preprocessor">#include "extrafiltersplugin.h"</span> <span class="type"><a href="qstringlist.html">QStringList</a></span> ExtraFiltersPlugin<span class="operator">::</span>filters() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type"><a href="qstringlist.html">QStringList</a></span>() <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"Flip Horizontally"</span>) <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"Flip Vertically"</span>) <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"Smudge..."</span>) <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"Threshold..."</span>); } <span class="type"><a href="qimage.html">QImage</a></span> ExtraFiltersPlugin<span class="operator">::</span>filterImage(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&</span>filter<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qimage.html">QImage</a></span> <span class="operator">&</span>image<span class="operator">,</span> <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent) { <span class="type"><a href="qimage.html">QImage</a></span> original <span class="operator">=</span> image<span class="operator">.</span>convertToFormat(<span class="type"><a href="qimage.html">QImage</a></span><span class="operator">::</span>Format_RGB32); <span class="type"><a href="qimage.html">QImage</a></span> result <span class="operator">=</span> original; <span class="keyword">if</span> (filter <span class="operator">=</span><span class="operator">=</span> tr(<span class="string">"Flip Horizontally"</span>)) { <span class="keyword">for</span> (<span class="type">int</span> y <span class="operator">=</span> <span class="number">0</span>; y <span class="operator"><</span> original<span class="operator">.</span>height(); <span class="operator">+</span><span class="operator">+</span>y) { <span class="keyword">for</span> (<span class="type">int</span> x <span class="operator">=</span> <span class="number">0</span>; x <span class="operator"><</span> original<span class="operator">.</span>width(); <span class="operator">+</span><span class="operator">+</span>x) { <span class="type">int</span> pixel <span class="operator">=</span> original<span class="operator">.</span>pixel(original<span class="operator">.</span>width() <span class="operator">-</span> x <span class="operator">-</span> <span class="number">1</span><span class="operator">,</span> y); result<span class="operator">.</span>setPixel(x<span class="operator">,</span> y<span class="operator">,</span> pixel); } } } <span class="keyword">else</span> <span class="keyword">if</span> (filter <span class="operator">=</span><span class="operator">=</span> tr(<span class="string">"Flip Vertically"</span>)) { <span class="keyword">for</span> (<span class="type">int</span> y <span class="operator">=</span> <span class="number">0</span>; y <span class="operator"><</span> original<span class="operator">.</span>height(); <span class="operator">+</span><span class="operator">+</span>y) { <span class="keyword">for</span> (<span class="type">int</span> x <span class="operator">=</span> <span class="number">0</span>; x <span class="operator"><</span> original<span class="operator">.</span>width(); <span class="operator">+</span><span class="operator">+</span>x) { <span class="type">int</span> pixel <span class="operator">=</span> original<span class="operator">.</span>pixel(x<span class="operator">,</span> original<span class="operator">.</span>height() <span class="operator">-</span> y <span class="operator">-</span> <span class="number">1</span>); result<span class="operator">.</span>setPixel(x<span class="operator">,</span> y<span class="operator">,</span> pixel); } } } <span class="keyword">else</span> <span class="keyword">if</span> (filter <span class="operator">=</span><span class="operator">=</span> tr(<span class="string">"Smudge..."</span>)) { <span class="type">bool</span> ok; <span class="type">int</span> numIters <span class="operator">=</span> <span class="type"><a href="qinputdialog.html">QInputDialog</a></span><span class="operator">::</span>getInteger(parent<span class="operator">,</span> tr(<span class="string">"Smudge Filter"</span>)<span class="operator">,</span> tr(<span class="string">"Enter number of iterations:"</span>)<span class="operator">,</span> <span class="number">5</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">20</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="operator">&</span>ok); <span class="keyword">if</span> (ok) { <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> numIters; <span class="operator">+</span><span class="operator">+</span>i) { <span class="keyword">for</span> (<span class="type">int</span> y <span class="operator">=</span> <span class="number">1</span>; y <span class="operator"><</span> original<span class="operator">.</span>height() <span class="operator">-</span> <span class="number">1</span>; <span class="operator">+</span><span class="operator">+</span>y) { <span class="keyword">for</span> (<span class="type">int</span> x <span class="operator">=</span> <span class="number">1</span>; x <span class="operator"><</span> original<span class="operator">.</span>width() <span class="operator">-</span> <span class="number">1</span>; <span class="operator">+</span><span class="operator">+</span>x) { <span class="type">int</span> p1 <span class="operator">=</span> original<span class="operator">.</span>pixel(x<span class="operator">,</span> y); <span class="type">int</span> p2 <span class="operator">=</span> original<span class="operator">.</span>pixel(x<span class="operator">,</span> y <span class="operator">+</span> <span class="number">1</span>); <span class="type">int</span> p3 <span class="operator">=</span> original<span class="operator">.</span>pixel(x<span class="operator">,</span> y <span class="operator">-</span> <span class="number">1</span>); <span class="type">int</span> p4 <span class="operator">=</span> original<span class="operator">.</span>pixel(x <span class="operator">+</span> <span class="number">1</span><span class="operator">,</span> y); <span class="type">int</span> p5 <span class="operator">=</span> original<span class="operator">.</span>pixel(x <span class="operator">-</span> <span class="number">1</span><span class="operator">,</span> y); <span class="type">int</span> red <span class="operator">=</span> (<a href="qcolor.html#qRed">qRed</a>(p1) <span class="operator">+</span> <a href="qcolor.html#qRed">qRed</a>(p2) <span class="operator">+</span> <a href="qcolor.html#qRed">qRed</a>(p3) <span class="operator">+</span> <a href="qcolor.html#qRed">qRed</a>(p4) <span class="operator">+</span> <a href="qcolor.html#qRed">qRed</a>(p5)) <span class="operator">/</span> <span class="number">5</span>; <span class="type">int</span> green <span class="operator">=</span> (<a href="qcolor.html#qGreen">qGreen</a>(p1) <span class="operator">+</span> <a href="qcolor.html#qGreen">qGreen</a>(p2) <span class="operator">+</span> <a href="qcolor.html#qGreen">qGreen</a>(p3) <span class="operator">+</span> <a href="qcolor.html#qGreen">qGreen</a>(p4) <span class="operator">+</span> <a href="qcolor.html#qGreen">qGreen</a>(p5)) <span class="operator">/</span> <span class="number">5</span>; <span class="type">int</span> blue <span class="operator">=</span> (<a href="qcolor.html#qBlue">qBlue</a>(p1) <span class="operator">+</span> <a href="qcolor.html#qBlue">qBlue</a>(p2) <span class="operator">+</span> <a href="qcolor.html#qBlue">qBlue</a>(p3) <span class="operator">+</span> <a href="qcolor.html#qBlue">qBlue</a>(p4) <span class="operator">+</span> <a href="qcolor.html#qBlue">qBlue</a>(p5)) <span class="operator">/</span> <span class="number">5</span>; <span class="type">int</span> alpha <span class="operator">=</span> (<a href="qcolor.html#qAlpha">qAlpha</a>(p1) <span class="operator">+</span> <a href="qcolor.html#qAlpha">qAlpha</a>(p2) <span class="operator">+</span> <a href="qcolor.html#qAlpha">qAlpha</a>(p3) <span class="operator">+</span> <a href="qcolor.html#qAlpha">qAlpha</a>(p4) <span class="operator">+</span> <a href="qcolor.html#qAlpha">qAlpha</a>(p5)) <span class="operator">/</span> <span class="number">5</span>; result<span class="operator">.</span>setPixel(x<span class="operator">,</span> y<span class="operator">,</span> <a href="qcolor.html#qRgba">qRgba</a>(red<span class="operator">,</span> green<span class="operator">,</span> blue<span class="operator">,</span> alpha)); } } } } } <span class="keyword">else</span> <span class="keyword">if</span> (filter <span class="operator">=</span><span class="operator">=</span> tr(<span class="string">"Threshold..."</span>)) { <span class="type">bool</span> ok; <span class="type">int</span> threshold <span class="operator">=</span> <span class="type"><a href="qinputdialog.html">QInputDialog</a></span><span class="operator">::</span>getInteger(parent<span class="operator">,</span> tr(<span class="string">"Threshold Filter"</span>)<span class="operator">,</span> tr(<span class="string">"Enter threshold:"</span>)<span class="operator">,</span> <span class="number">10</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">256</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="operator">&</span>ok); <span class="keyword">if</span> (ok) { <span class="type">int</span> factor <span class="operator">=</span> <span class="number">256</span> <span class="operator">/</span> threshold; <span class="keyword">for</span> (<span class="type">int</span> y <span class="operator">=</span> <span class="number">0</span>; y <span class="operator"><</span> original<span class="operator">.</span>height(); <span class="operator">+</span><span class="operator">+</span>y) { <span class="keyword">for</span> (<span class="type">int</span> x <span class="operator">=</span> <span class="number">0</span>; x <span class="operator"><</span> original<span class="operator">.</span>width(); <span class="operator">+</span><span class="operator">+</span>x) { <span class="type">int</span> pixel <span class="operator">=</span> original<span class="operator">.</span>pixel(x<span class="operator">,</span> y); result<span class="operator">.</span>setPixel(x<span class="operator">,</span> y<span class="operator">,</span> <a href="qcolor.html#qRgba">qRgba</a>(<a href="qcolor.html#qRed">qRed</a>(pixel) <span class="operator">/</span> factor <span class="operator">*</span> factor<span class="operator">,</span> <a href="qcolor.html#qGreen">qGreen</a>(pixel) <span class="operator">/</span> factor <span class="operator">*</span> factor<span class="operator">,</span> <a href="qcolor.html#qBlue">qBlue</a>(pixel) <span class="operator">/</span> factor <span class="operator">*</span> factor<span class="operator">,</span> <a href="qcolor.html#qAlpha">qAlpha</a>(pixel))); } } } } <span class="keyword">return</span> result; } <a href="qtplugin.html#Q_EXPORT_PLUGIN2">Q_EXPORT_PLUGIN2</a>(pnp_extrafilters<span class="operator">,</span> ExtraFiltersPlugin)</pre> </div> <!-- @@@tools/plugandpaintplugins/extrafilters/extrafiltersplugin.cpp --> </div> </div> </div> <div class="ft"> <span></span> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2013 Digia Plc and/or its subsidiaries. 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