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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">imagewidget.cpp Example File</h1> <span class="small-subtitle">gestures/imagegestures/imagewidget.cpp</span> <!-- $$$gestures/imagegestures/imagewidget.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2015 The Qt Company Ltd. ** Contact: http://www.qt.io/licensing/ ** ** 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 The Qt Company Ltd 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 "imagewidget.h"</span> <span class="preprocessor">#include <QtGui></span> <span class="type">bool</span> ImageWidget<span class="operator">::</span>verbose <span class="operator">=</span> <span class="keyword">false</span>; ImageWidget<span class="operator">::</span>ImageWidget(<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)<span class="operator">,</span> position(<span class="number">0</span>)<span class="operator">,</span> horizontalOffset(<span class="number">0</span>)<span class="operator">,</span> verticalOffset(<span class="number">0</span>)<span class="operator">,</span> rotationAngle(<span class="number">0</span>)<span class="operator">,</span> scaleFactor(<span class="number">1</span>)<span class="operator">,</span> currentStepScaleFactor(<span class="number">1</span>) { setMinimumSize(<span class="type"><a href="qsize.html">QSize</a></span>(<span class="number">100</span><span class="operator">,</span><span class="number">100</span>)); } <span class="type">void</span> ImageWidget<span class="operator">::</span>grabGestures(<span class="keyword">const</span> <span class="type"><a href="qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>GestureType<span class="operator">></span> <span class="operator">&</span>gestures) { foreach (<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>GestureType gesture<span class="operator">,</span> gestures) grabGesture(gesture); } <span class="type">bool</span> ImageWidget<span class="operator">::</span>event(<span class="type"><a href="qevent.html">QEvent</a></span> <span class="operator">*</span>event) { <span class="keyword">if</span> (event<span class="operator">-</span><span class="operator">></span>type() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qevent.html">QEvent</a></span><span class="operator">::</span>Gesture) <span class="keyword">return</span> gestureEvent(<span class="keyword">static_cast</span><span class="operator"><</span><span class="type"><a href="qgestureevent.html">QGestureEvent</a></span><span class="operator">*</span><span class="operator">></span>(event)); <span class="keyword">return</span> <span class="type"><a href="qwidget.html">QWidget</a></span><span class="operator">::</span>event(event); } <span class="type">void</span> ImageWidget<span class="operator">::</span>paintEvent(<span class="type"><a href="qpaintevent.html">QPaintEvent</a></span><span class="operator">*</span>) { <span class="type"><a href="qpainter.html">QPainter</a></span> p(<span class="keyword">this</span>); <span class="keyword">const</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> iw <span class="operator">=</span> currentImage<span class="operator">.</span>width(); <span class="keyword">const</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> ih <span class="operator">=</span> currentImage<span class="operator">.</span>height(); <span class="keyword">const</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> wh <span class="operator">=</span> height(); <span class="keyword">const</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> ww <span class="operator">=</span> width(); p<span class="operator">.</span>translate(ww<span class="operator">/</span><span class="number">2</span><span class="operator">,</span> wh<span class="operator">/</span><span class="number">2</span>); p<span class="operator">.</span>translate(horizontalOffset<span class="operator">,</span> verticalOffset); p<span class="operator">.</span>rotate(rotationAngle); p<span class="operator">.</span>scale(currentStepScaleFactor <span class="operator">*</span> scaleFactor<span class="operator">,</span> currentStepScaleFactor <span class="operator">*</span> scaleFactor); p<span class="operator">.</span>translate(<span class="operator">-</span>iw<span class="operator">/</span><span class="number">2</span><span class="operator">,</span> <span class="operator">-</span>ih<span class="operator">/</span><span class="number">2</span>); p<span class="operator">.</span>drawImage(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> currentImage); } <span class="type">void</span> ImageWidget<span class="operator">::</span>mouseDoubleClickEvent(<span class="type"><a href="qmouseevent.html">QMouseEvent</a></span> <span class="operator">*</span>) { rotationAngle <span class="operator">=</span> <span class="number">0</span>; scaleFactor <span class="operator">=</span> <span class="number">1</span>; currentStepScaleFactor <span class="operator">=</span> <span class="number">1</span>; verticalOffset <span class="operator">=</span> <span class="number">0</span>; horizontalOffset <span class="operator">=</span> <span class="number">0</span>; update(); <span class="keyword">if</span> (ImageWidget<span class="operator">::</span>verbose) <a href="qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"reset on mouse double click"</span>; } <span class="type">bool</span> ImageWidget<span class="operator">::</span>gestureEvent(<span class="type"><a href="qgestureevent.html">QGestureEvent</a></span> <span class="operator">*</span>event) { <span class="keyword">if</span> (ImageWidget<span class="operator">::</span>verbose) <a href="qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"gestureEvent():"</span> <span class="operator"><</span><span class="operator"><</span> event<span class="operator">-</span><span class="operator">></span>gestures()<span class="operator">.</span>size(); <span class="keyword">if</span> (<span class="type"><a href="qgesture.html">QGesture</a></span> <span class="operator">*</span>swipe <span class="operator">=</span> event<span class="operator">-</span><span class="operator">></span>gesture(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>SwipeGesture)) swipeTriggered(<span class="keyword">static_cast</span><span class="operator"><</span><span class="type"><a href="qswipegesture.html">QSwipeGesture</a></span> <span class="operator">*</span><span class="operator">></span>(swipe)); <span class="keyword">else</span> <span class="keyword">if</span> (<span class="type"><a href="qgesture.html">QGesture</a></span> <span class="operator">*</span>pan <span class="operator">=</span> event<span class="operator">-</span><span class="operator">></span>gesture(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>PanGesture)) panTriggered(<span class="keyword">static_cast</span><span class="operator"><</span><span class="type"><a href="qpangesture.html">QPanGesture</a></span> <span class="operator">*</span><span class="operator">></span>(pan)); <span class="keyword">if</span> (<span class="type"><a href="qgesture.html">QGesture</a></span> <span class="operator">*</span>pinch <span class="operator">=</span> event<span class="operator">-</span><span class="operator">></span>gesture(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>PinchGesture)) pinchTriggered(<span class="keyword">static_cast</span><span class="operator"><</span><span class="type"><a href="qpinchgesture.html">QPinchGesture</a></span> <span class="operator">*</span><span class="operator">></span>(pinch)); <span class="keyword">return</span> <span class="keyword">true</span>; } <span class="type">void</span> ImageWidget<span class="operator">::</span>panTriggered(<span class="type"><a href="qpangesture.html">QPanGesture</a></span> <span class="operator">*</span>gesture) { <span class="preprocessor">#ifndef QT_NO_CURSOR</span> <span class="keyword">switch</span> (gesture<span class="operator">-</span><span class="operator">></span>state()) { <span class="keyword">case</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>GestureStarted: <span class="keyword">case</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>GestureUpdated: setCursor(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>SizeAllCursor); <span class="keyword">break</span>; <span class="keyword">default</span>: setCursor(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>ArrowCursor); } <span class="preprocessor">#endif</span> <span class="type"><a href="qpointf.html">QPointF</a></span> delta <span class="operator">=</span> gesture<span class="operator">-</span><span class="operator">></span>delta(); <span class="keyword">if</span> (ImageWidget<span class="operator">::</span>verbose) <a href="qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"panTriggered():"</span> <span class="operator"><</span><span class="operator"><</span> delta; horizontalOffset <span class="operator">+</span><span class="operator">=</span> delta<span class="operator">.</span>x(); verticalOffset <span class="operator">+</span><span class="operator">=</span> delta<span class="operator">.</span>y(); update(); } <span class="type">void</span> ImageWidget<span class="operator">::</span>pinchTriggered(<span class="type"><a href="qpinchgesture.html">QPinchGesture</a></span> <span class="operator">*</span>gesture) { <span class="type"><a href="qpinchgesture.html">QPinchGesture</a></span><span class="operator">::</span>ChangeFlags changeFlags <span class="operator">=</span> gesture<span class="operator">-</span><span class="operator">></span>changeFlags(); <span class="keyword">if</span> (changeFlags <span class="operator">&</span> <span class="type"><a href="qpinchgesture.html">QPinchGesture</a></span><span class="operator">::</span>RotationAngleChanged) { <span class="keyword">const</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> value <span class="operator">=</span> gesture<span class="operator">-</span><span class="operator">></span>property(<span class="string">"rotationAngle"</span>)<span class="operator">.</span>toReal(); <span class="keyword">const</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> lastValue <span class="operator">=</span> gesture<span class="operator">-</span><span class="operator">></span>property(<span class="string">"lastRotationAngle"</span>)<span class="operator">.</span>toReal(); <span class="keyword">const</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> rotationAngleDelta <span class="operator">=</span> value <span class="operator">-</span> lastValue; rotationAngle <span class="operator">+</span><span class="operator">=</span> rotationAngleDelta; <span class="keyword">if</span> (ImageWidget<span class="operator">::</span>verbose) <a href="qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"pinchTriggered(): rotation by"</span> <span class="operator"><</span><span class="operator"><</span> rotationAngleDelta <span class="operator"><</span><span class="operator"><</span> rotationAngle; } <span class="keyword">if</span> (changeFlags <span class="operator">&</span> <span class="type"><a href="qpinchgesture.html">QPinchGesture</a></span><span class="operator">::</span>ScaleFactorChanged) { <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> value <span class="operator">=</span> gesture<span class="operator">-</span><span class="operator">></span>property(<span class="string">"scaleFactor"</span>)<span class="operator">.</span>toReal(); currentStepScaleFactor <span class="operator">=</span> value; <span class="keyword">if</span> (ImageWidget<span class="operator">::</span>verbose) <a href="qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"pinchTriggered(): "</span> <span class="operator"><</span><span class="operator"><</span> currentStepScaleFactor; } <span class="keyword">if</span> (gesture<span class="operator">-</span><span class="operator">></span>state() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>GestureFinished) { scaleFactor <span class="operator">*</span><span class="operator">=</span> currentStepScaleFactor; currentStepScaleFactor <span class="operator">=</span> <span class="number">1</span>; } update(); } <span class="type">void</span> ImageWidget<span class="operator">::</span>swipeTriggered(<span class="type"><a href="qswipegesture.html">QSwipeGesture</a></span> <span class="operator">*</span>gesture) { <span class="keyword">if</span> (gesture<span class="operator">-</span><span class="operator">></span>state() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>GestureFinished) { <span class="keyword">if</span> (gesture<span class="operator">-</span><span class="operator">></span>horizontalDirection() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qswipegesture.html">QSwipeGesture</a></span><span class="operator">::</span>Left <span class="operator">|</span><span class="operator">|</span> gesture<span class="operator">-</span><span class="operator">></span>verticalDirection() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qswipegesture.html">QSwipeGesture</a></span><span class="operator">::</span>Up) { <span class="keyword">if</span> (ImageWidget<span class="operator">::</span>verbose) <a href="qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"swipeTriggered(): swipe to previous"</span>; goPrevImage(); } <span class="keyword">else</span> { <span class="keyword">if</span> (ImageWidget<span class="operator">::</span>verbose) <a href="qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"swipeTriggered(): swipe to next"</span>; goNextImage(); } update(); } } <span class="type">void</span> ImageWidget<span class="operator">::</span>resizeEvent(<span class="type"><a href="qresizeevent.html">QResizeEvent</a></span><span class="operator">*</span>) { update(); } <span class="type">void</span> ImageWidget<span class="operator">::</span>openDirectory(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&</span>path) { <span class="keyword">this</span><span class="operator">-</span><span class="operator">></span>path <span class="operator">=</span> path; <span class="type"><a href="qdir.html">QDir</a></span> dir(path); <span class="type"><a href="qstringlist.html">QStringList</a></span> nameFilters; nameFilters <span class="operator"><</span><span class="operator"><</span> <span class="string">"*.jpg"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"*.png"</span>; files <span class="operator">=</span> dir<span class="operator">.</span>entryList(nameFilters<span class="operator">,</span> <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); position <span class="operator">=</span> <span class="number">0</span>; goToImage(<span class="number">0</span>); update(); } <span class="type"><a href="qimage.html">QImage</a></span> ImageWidget<span class="operator">::</span>loadImage(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&</span>fileName) { <a href="qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> position <span class="operator"><</span><span class="operator"><</span> files <span class="operator"><</span><span class="operator"><</span> fileName; <span class="type"><a href="qimagereader.html">QImageReader</a></span> reader(fileName); <span class="keyword">if</span> (ImageWidget<span class="operator">::</span>verbose) <a href="qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"loading"</span> <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>toNativeSeparators(fileName) <span class="operator"><</span><span class="operator"><</span> position <span class="operator"><</span><span class="operator"><</span> <span class="char">'/'</span> <span class="operator"><</span><span class="operator"><</span> files<span class="operator">.</span>size(); <span class="keyword">if</span> (<span class="operator">!</span>reader<span class="operator">.</span>canRead()) { <a href="qtglobal.html#qWarning">qWarning</a>() <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>toNativeSeparators(fileName) <span class="operator"><</span><span class="operator"><</span> <span class="string">": can't load image"</span>; <span class="keyword">return</span> <span class="type"><a href="qimage.html">QImage</a></span>(); } <span class="type"><a href="qimage.html">QImage</a></span> image; <span class="keyword">if</span> (<span class="operator">!</span>reader<span class="operator">.</span>read(<span class="operator">&</span>image)) { <a href="qtglobal.html#qWarning">qWarning</a>() <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>toNativeSeparators(fileName) <span class="operator"><</span><span class="operator"><</span> <span class="string">": corrupted image: "</span> <span class="operator"><</span><span class="operator"><</span> reader<span class="operator">.</span>errorString(); <span class="keyword">return</span> <span class="type"><a href="qimage.html">QImage</a></span>(); } <span class="keyword">const</span> <span class="type"><a href="qsize.html">QSize</a></span> maximumSize(<span class="number">2000</span><span class="operator">,</span> <span class="number">2000</span>); <span class="comment">// Reduce in case someone has large photo images.</span> <span class="keyword">if</span> (image<span class="operator">.</span>size()<span class="operator">.</span>width() <span class="operator">></span> maximumSize<span class="operator">.</span>width() <span class="operator">|</span><span class="operator">|</span> image<span class="operator">.</span>height() <span class="operator">></span> maximumSize<span class="operator">.</span>height()) image <span class="operator">=</span> image<span class="operator">.</span>scaled(maximumSize<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>KeepAspectRatio<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>SmoothTransformation); <span class="keyword">return</span> image; } <span class="type">void</span> ImageWidget<span class="operator">::</span>goNextImage() { <span class="keyword">if</span> (files<span class="operator">.</span>isEmpty()) <span class="keyword">return</span>; <span class="keyword">if</span> (position <span class="operator"><</span> files<span class="operator">.</span>size()<span class="operator">-</span><span class="number">1</span>) { <span class="operator">+</span><span class="operator">+</span>position; prevImage <span class="operator">=</span> currentImage; currentImage <span class="operator">=</span> nextImage; <span class="keyword">if</span> (position<span class="operator">+</span><span class="number">1</span> <span class="operator"><</span> files<span class="operator">.</span>size()) nextImage <span class="operator">=</span> loadImage(path<span class="operator">+</span>QLatin1String(<span class="string">"/"</span>)<span class="operator">+</span>files<span class="operator">.</span>at(position<span class="operator">+</span><span class="number">1</span>)); <span class="keyword">else</span> nextImage <span class="operator">=</span> <span class="type"><a href="qimage.html">QImage</a></span>(); } update(); } <span class="type">void</span> ImageWidget<span class="operator">::</span>goPrevImage() { <span class="keyword">if</span> (files<span class="operator">.</span>isEmpty()) <span class="keyword">return</span>; <span class="keyword">if</span> (position <span class="operator">></span> <span class="number">0</span>) { <span class="operator">-</span><span class="operator">-</span>position; nextImage <span class="operator">=</span> currentImage; currentImage <span class="operator">=</span> prevImage; <span class="keyword">if</span> (position <span class="operator">></span> <span class="number">0</span>) prevImage <span class="operator">=</span> loadImage(path<span class="operator">+</span>QLatin1String(<span class="string">"/"</span>)<span class="operator">+</span>files<span class="operator">.</span>at(position<span class="operator">-</span><span class="number">1</span>)); <span class="keyword">else</span> prevImage <span class="operator">=</span> <span class="type"><a href="qimage.html">QImage</a></span>(); } update(); } <span class="type">void</span> ImageWidget<span class="operator">::</span>goToImage(<span class="type">int</span> index) { <span class="keyword">if</span> (files<span class="operator">.</span>isEmpty()) <span class="keyword">return</span>; <span class="keyword">if</span> (index <span class="operator"><</span> <span class="number">0</span> <span class="operator">|</span><span class="operator">|</span> index <span class="operator">></span><span class="operator">=</span> files<span class="operator">.</span>size()) { <a href="qtglobal.html#qWarning">qWarning</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"goToImage: invalid index: "</span> <span class="operator"><</span><span class="operator"><</span> index; <span class="keyword">return</span>; } <span class="keyword">if</span> (index <span class="operator">=</span><span class="operator">=</span> position<span class="operator">+</span><span class="number">1</span>) { goNextImage(); <span class="keyword">return</span>; } <span class="keyword">if</span> (position <span class="operator">></span> <span class="number">0</span> <span class="operator">&</span><span class="operator">&</span> index <span class="operator">=</span><span class="operator">=</span> position<span class="operator">-</span><span class="number">1</span>) { goPrevImage(); <span class="keyword">return</span>; } position <span class="operator">=</span> index; <span class="keyword">if</span> (index <span class="operator">></span> <span class="number">0</span>) prevImage <span class="operator">=</span> loadImage(path<span class="operator">+</span>QLatin1String(<span class="string">"/"</span>)<span class="operator">+</span>files<span class="operator">.</span>at(position<span class="operator">-</span><span class="number">1</span>)); <span class="keyword">else</span> prevImage <span class="operator">=</span> <span class="type"><a href="qimage.html">QImage</a></span>(); currentImage <span class="operator">=</span> loadImage(path<span class="operator">+</span>QLatin1String(<span class="string">"/"</span>)<span class="operator">+</span>files<span class="operator">.</span>at(position)); <span class="keyword">if</span> (position<span class="operator">+</span><span class="number">1</span> <span class="operator"><</span> files<span class="operator">.</span>size()) nextImage <span class="operator">=</span> loadImage(path<span class="operator">+</span>QLatin1String(<span class="string">"/"</span>)<span class="operator">+</span>files<span class="operator">.</span>at(position<span class="operator">+</span><span class="number">1</span>)); <span class="keyword">else</span> nextImage <span class="operator">=</span> <span class="type"><a href="qimage.html">QImage</a></span>(); update(); }</pre> </div> <!-- @@@gestures/imagegestures/imagewidget.cpp --> </div> </div> </div> <div class="ft"> <span></span> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2015 The Qt Company Ltd. 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