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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">slideshow.cpp Example File</h1> <span class="small-subtitle">demos/embedded/fluidlauncher/slideshow.cpp</span> <!-- $$$demos/embedded/fluidlauncher/slideshow.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 demonstration applications of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and Digia. For licensing terms and ** conditions see http://qt.digia.com/licensing. For further information ** use the contact form at http://qt.digia.com/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Digia gives you certain additional ** rights. These rights are described in the Digia Qt LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 3.0 as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU General Public License version 3.0 requirements will be ** met: http://www.gnu.org/copyleft/gpl.html. ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include <QBasicTimer></span> <span class="preprocessor">#include <QList></span> <span class="preprocessor">#include <QImage></span> <span class="preprocessor">#include <QDir></span> <span class="preprocessor">#include <QPainter></span> <span class="preprocessor">#include <QPaintEvent></span> <span class="preprocessor">#include <QDebug></span> <span class="preprocessor">#include "slideshow.h"</span> <span class="keyword">class</span> SlideShowPrivate { <span class="keyword">public</span>: SlideShowPrivate(); <span class="type">int</span> currentSlide; <span class="type">int</span> slideInterval; <span class="type"><a href="qbasictimer.html">QBasicTimer</a></span> interSlideTimer; <span class="type"><a href="qstringlist.html">QStringList</a></span> imagePaths; <span class="type">void</span> showNextSlide(); }; SlideShowPrivate<span class="operator">::</span>SlideShowPrivate() { currentSlide <span class="operator">=</span> <span class="number">0</span>; slideInterval <span class="operator">=</span> <span class="number">10000</span>; <span class="comment">// Default to 10 sec interval</span> } <span class="type">void</span> SlideShowPrivate<span class="operator">::</span>showNextSlide() { currentSlide<span class="operator">+</span><span class="operator">+</span>; <span class="keyword">if</span> (currentSlide <span class="operator">></span><span class="operator">=</span> imagePaths<span class="operator">.</span>size()) currentSlide <span class="operator">=</span> <span class="number">0</span>; } SlideShow<span class="operator">::</span>SlideShow(<span class="type"><a href="qwidget.html">QWidget</a></span><span class="operator">*</span> parent) : <span class="type"><a href="qwidget.html">QWidget</a></span>(parent) { d <span class="operator">=</span> <span class="keyword">new</span> SlideShowPrivate; setAttribute(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>WA_StaticContents<span class="operator">,</span> <span class="keyword">true</span>); setAttribute(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>WA_OpaquePaintEvent<span class="operator">,</span> <span class="keyword">true</span>); setAttribute(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>WA_NoSystemBackground<span class="operator">,</span> <span class="keyword">true</span>); setMouseTracking(<span class="keyword">true</span>); } SlideShow<span class="operator">::</span><span class="operator">~</span>SlideShow() { <span class="keyword">delete</span> d; } <span class="type">void</span> SlideShow<span class="operator">::</span>addImageDir(<span class="type"><a href="qstring.html">QString</a></span> dirName) { <span class="type"><a href="qdir.html">QDir</a></span> dir(dirName); <span class="type"><a href="qstringlist.html">QStringList</a></span> fileNames <span class="operator">=</span> dir<span class="operator">.</span>entryList(<span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>Files <span class="operator">|</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>Readable<span class="operator">,</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>Name); <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>fileNames<span class="operator">.</span>count(); i<span class="operator">+</span><span class="operator">+</span>) d<span class="operator">-</span><span class="operator">></span>imagePaths <span class="operator"><</span><span class="operator"><</span> dir<span class="operator">.</span>absoluteFilePath(fileNames<span class="operator">[</span>i<span class="operator">]</span>); } <span class="type">void</span> SlideShow<span class="operator">::</span>addImage(<span class="type"><a href="qstring.html">QString</a></span> filename) { d<span class="operator">-</span><span class="operator">></span>imagePaths <span class="operator"><</span><span class="operator"><</span> filename; } <span class="type">void</span> SlideShow<span class="operator">::</span>clearImages() { d<span class="operator">-</span><span class="operator">></span>imagePaths<span class="operator">.</span>clear(); } <span class="type">void</span> SlideShow<span class="operator">::</span>startShow() { d<span class="operator">-</span><span class="operator">></span>interSlideTimer<span class="operator">.</span>start(d<span class="operator">-</span><span class="operator">></span>slideInterval<span class="operator">,</span> <span class="keyword">this</span>); d<span class="operator">-</span><span class="operator">></span>showNextSlide(); update(); } <span class="type">void</span> SlideShow<span class="operator">::</span>stopShow() { d<span class="operator">-</span><span class="operator">></span>interSlideTimer<span class="operator">.</span>stop(); } <span class="type">int</span> SlideShow<span class="operator">::</span>slideInterval() { <span class="keyword">return</span> d<span class="operator">-</span><span class="operator">></span>slideInterval; } <span class="type">void</span> SlideShow<span class="operator">::</span>setSlideInterval(<span class="type">int</span> val) { d<span class="operator">-</span><span class="operator">></span>slideInterval <span class="operator">=</span> val; } <span class="type">void</span> SlideShow<span class="operator">::</span>timerEvent(<span class="type"><a href="qtimerevent.html">QTimerEvent</a></span><span class="operator">*</span> event) { Q_UNUSED(event); d<span class="operator">-</span><span class="operator">></span>showNextSlide(); update(); } <span class="type">void</span> SlideShow<span class="operator">::</span>paintEvent(<span class="type"><a href="qpaintevent.html">QPaintEvent</a></span> <span class="operator">*</span>event) { <span class="type"><a href="qpainter.html">QPainter</a></span> painter(<span class="keyword">this</span>); painter<span class="operator">.</span>setRenderHint(<span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>Antialiasing<span class="operator">,</span> <span class="keyword">false</span>); <span class="keyword">if</span> (d<span class="operator">-</span><span class="operator">></span>imagePaths<span class="operator">.</span>size() <span class="operator">></span> <span class="number">0</span>) { <span class="type"><a href="qpixmap.html">QPixmap</a></span> slide <span class="operator">=</span> <span class="type"><a href="qpixmap.html">QPixmap</a></span>(d<span class="operator">-</span><span class="operator">></span>imagePaths<span class="operator">[</span>d<span class="operator">-</span><span class="operator">></span>currentSlide<span class="operator">]</span>); <span class="type"><a href="qsize.html">QSize</a></span> slideSize <span class="operator">=</span> slide<span class="operator">.</span>size(); <span class="type"><a href="qsize.html">QSize</a></span> scaledSize <span class="operator">=</span> <span class="type"><a href="qsize.html">QSize</a></span>(<a href="qtglobal.html#qMin">qMin</a>(slideSize<span class="operator">.</span>width()<span class="operator">,</span> size()<span class="operator">.</span>width())<span class="operator">,</span> <a href="qtglobal.html#qMin">qMin</a>(slideSize<span class="operator">.</span>height()<span class="operator">,</span> size()<span class="operator">.</span>height())); <span class="keyword">if</span> (slideSize <span class="operator">!</span><span class="operator">=</span> scaledSize) slide <span class="operator">=</span> slide<span class="operator">.</span>scaled(scaledSize<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>KeepAspectRatio); <span class="type"><a href="qrect.html">QRect</a></span> pixmapRect(<a href="qtglobal.html#qMax">qMax</a>( (size()<span class="operator">.</span>width() <span class="operator">-</span> slide<span class="operator">.</span>width())<span class="operator">/</span><span class="number">2</span><span class="operator">,</span> <span class="number">0</span>)<span class="operator">,</span> <a href="qtglobal.html#qMax">qMax</a>( (size()<span class="operator">.</span>height() <span class="operator">-</span> slide<span class="operator">.</span>height())<span class="operator">/</span><span class="number">2</span><span class="operator">,</span> <span class="number">0</span>)<span class="operator">,</span> slide<span class="operator">.</span>width()<span class="operator">,</span> slide<span class="operator">.</span>height()); <span class="keyword">if</span> (pixmapRect<span class="operator">.</span>top() <span class="operator">></span> <span class="number">0</span>) { <span class="comment">// Fill in top & bottom rectangles:</span> painter<span class="operator">.</span>fillRect(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> size()<span class="operator">.</span>width()<span class="operator">,</span> pixmapRect<span class="operator">.</span>top()<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>black); painter<span class="operator">.</span>fillRect(<span class="number">0</span><span class="operator">,</span> pixmapRect<span class="operator">.</span>bottom()<span class="operator">,</span> size()<span class="operator">.</span>width()<span class="operator">,</span> size()<span class="operator">.</span>height()<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>black); } <span class="keyword">if</span> (pixmapRect<span class="operator">.</span>left() <span class="operator">></span> <span class="number">0</span>) { <span class="comment">// Fill in left & right rectangles:</span> painter<span class="operator">.</span>fillRect(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> pixmapRect<span class="operator">.</span>left()<span class="operator">,</span> size()<span class="operator">.</span>height()<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>black); painter<span class="operator">.</span>fillRect(pixmapRect<span class="operator">.</span>right()<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> size()<span class="operator">.</span>width()<span class="operator">,</span> size()<span class="operator">.</span>height()<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>black); } painter<span class="operator">.</span>drawPixmap(pixmapRect<span class="operator">,</span> slide); } <span class="keyword">else</span> painter<span class="operator">.</span>fillRect(event<span class="operator">-</span><span class="operator">></span>rect()<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>black); } <span class="type">void</span> SlideShow<span class="operator">::</span>keyPressEvent(<span class="type"><a href="qkeyevent.html">QKeyEvent</a></span><span class="operator">*</span> event) { Q_UNUSED(event); <span class="keyword">emit</span> inputReceived(); } <span class="type">void</span> SlideShow<span class="operator">::</span>mouseMoveEvent(<span class="type"><a href="qmouseevent.html">QMouseEvent</a></span><span class="operator">*</span> event) { Q_UNUSED(event); <span class="keyword">emit</span> inputReceived(); } <span class="type">void</span> SlideShow<span class="operator">::</span>mousePressEvent(<span class="type"><a href="qmouseevent.html">QMouseEvent</a></span><span class="operator">*</span> event) { Q_UNUSED(event); <span class="keyword">emit</span> inputReceived(); } <span class="type">void</span> SlideShow<span class="operator">::</span>mouseReleaseEvent(<span class="type"><a href="qmouseevent.html">QMouseEvent</a></span><span class="operator">*</span> event) { Q_UNUSED(event); <span class="keyword">emit</span> inputReceived(); } <span class="type">void</span> SlideShow<span class="operator">::</span>showEvent(<span class="type"><a href="qshowevent.html">QShowEvent</a></span> <span class="operator">*</span> event ) { Q_UNUSED(event); <span class="preprocessor">#ifndef QT_NO_CURSOR</span> setCursor(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>BlankCursor); <span class="preprocessor">#endif</span> }</pre> </div> <!-- @@@demos/embedded/fluidlauncher/slideshow.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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