00001 <?php 00002 $rubrique = 65; 00003 $meta_description = "QExtend: Fichier source de imageviewer.cpp"; 00004 $meta_keywords =" QExtend: Fichier source de imageviewer.cpp"; 00005 $titre_page = "QExtend"; 00006 $urlCss = "http://www.developpez.com/template/kit/article.css"; 00007 $xhtml=true; 00008 $Auteur=""; 00009 $Licence="4"; 00010 $Annee="2010"; 00011 $topicType = 'Whitepaper'; 00012 $meta = '<link rel="stylesheet" type="text/css" media="screen" href="https://www.developpez.com/public/css/index2.css" /><link rel="stylesheet" type="text/css" media="screen" href="tabs.css" /><link rel="stylesheet" type="text/css" media="screen" href="doxygen.css" />'; 00013 include($_SERVER["DOCUMENT_ROOT"]."/template/entete.php"); 00014 00015 ob_start(); 00016 ?> 00017 <!-- Généré par Doxygen 1.7.1 --> 00018 <div class="navigation" id="top"> 00019 <div class="tabs"> 00020 <ul class="tablist"> 00021 <li><a href="index.php"><span>Page principale</span></a></li> 00022 <li><a href="namespaces.php"><span>Espaces de nommage</span></a></li> 00023 <li><a href="annotated.php"><span>Classes</span></a></li> 00024 <li class="current"><a href="files.php"><span>Fichiers</span></a></li> 00025 </ul> 00026 </div> 00027 <div class="tabs2"> 00028 <ul class="tablist"> 00029 <li><a href="files.php"><span>Liste des fichiers</span></a></li> 00030 </ul> 00031 </div> 00032 <div class="header"> 00033 <div class="headertitle"> 00034 <h1>imageviewer.cpp</h1> </div> 00035 </div> 00036 <div class="contents"> 00037 <div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span> 00038 <a name="l00002"></a>00002 <span class="comment">Copyright © 2010 alexandre petitjean</span> 00039 <a name="l00003"></a>00003 <span class="comment"></span> 00040 <a name="l00004"></a>00004 <span class="comment">This file is part of QExtend.</span> 00041 <a name="l00005"></a>00005 <span class="comment"></span> 00042 <a name="l00006"></a>00006 <span class="comment">QExtend is free software: you can redistribute it and/or modify</span> 00043 <a name="l00007"></a>00007 <span class="comment">it under the terms of the GNU General Public License as published by</span> 00044 <a name="l00008"></a>00008 <span class="comment">the Free Software Foundation, either version 3 of the License, or</span> 00045 <a name="l00009"></a>00009 <span class="comment">any later version.</span> 00046 <a name="l00010"></a>00010 <span class="comment"></span> 00047 <a name="l00011"></a>00011 <span class="comment">QExtend is distributed in the hope that it will be useful,</span> 00048 <a name="l00012"></a>00012 <span class="comment">but WITHOUT ANY WARRANTY; without even the implied warranty of</span> 00049 <a name="l00013"></a>00013 <span class="comment">MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span> 00050 <a name="l00014"></a>00014 <span class="comment">GNU General Public License for more details.</span> 00051 <a name="l00015"></a>00015 <span class="comment"></span> 00052 <a name="l00016"></a>00016 <span class="comment">You should have received a copy of the GNU General Public License</span> 00053 <a name="l00017"></a>00017 <span class="comment">along with QExtend. If not, see <http://www.gnu.org/licenses/>.</span> 00054 <a name="l00018"></a>00018 <span class="comment">*/</span> 00055 <a name="l00019"></a>00019 00056 <a name="l00020"></a>00020 <span class="preprocessor">#include "imageviewer.hpp"</span> 00057 <a name="l00021"></a>00021 00058 <a name="l00022"></a>00022 <span class="preprocessor">#include <QtCore/QPointF></span> 00059 <a name="l00023"></a>00023 00060 <a name="l00024"></a>00024 <span class="preprocessor">#include <QtGui/QApplication></span> 00061 <a name="l00025"></a>00025 <span class="preprocessor">#include <QtGui/QMouseEvent></span> 00062 <a name="l00026"></a>00026 <span class="preprocessor">#include <QtGui/QScrollBar></span> 00063 <a name="l00027"></a>00027 <span class="preprocessor">#include <QtGui/QWheelEvent></span> 00064 <a name="l00028"></a>00028 00065 <a name="l00029"></a>00029 <span class="keyword">using namespace </span>QExtend; 00066 <a name="l00030"></a>00030 00067 <a name="l00031"></a><a class="code" href="class_q_extend_1_1_image_viewer.php#adebf46ed9eb58544aa1e75873ff9c334">00031</a> <a class="code" href="class_q_extend_1_1_image_viewer.php#adebf46ed9eb58544aa1e75873ff9c334" title="Constructeur par defaut.">ImageViewer::ImageViewer</a>(QWidget *parent) : QScrollArea(parent) 00068 <a name="l00032"></a>00032 { 00069 <a name="l00033"></a>00033 this->setWidget(&m_imageRender); 00070 <a name="l00034"></a>00034 m_mouseInteraction = DragAndWheelzoom; 00071 <a name="l00035"></a>00035 m_isDragging = <span class="keyword">false</span>; 00072 <a name="l00036"></a>00036 } 00073 <a name="l00037"></a>00037 00074 <a name="l00038"></a><a class="code" href="class_q_extend_1_1_image_viewer.php#aa9835108e020f5a49fbf2d411099bc17">00038</a> <span class="keywordtype">void</span> <a class="code" href="class_q_extend_1_1_image_viewer.php#aa9835108e020f5a49fbf2d411099bc17" title="Selection du type d&#39;interaction souris.">ImageViewer::setMouseInteraction</a>(<a class="code" href="class_q_extend_1_1_image_viewer.php#a06b3f5bc67757f5e29ed1e7f27137a07" title="Enumeration des modes d&#39;interaction avec la souris.">ImageViewer::MouseInteractionMode</a> interaction) 00075 <a name="l00039"></a>00039 { 00076 <a name="l00040"></a>00040 m_mouseInteraction = interaction; 00077 <a name="l00041"></a>00041 } 00078 <a name="l00042"></a>00042 00079 <a name="l00043"></a>00043 <a class="code" href="class_q_extend_1_1_image_viewer.php#a06b3f5bc67757f5e29ed1e7f27137a07" title="Enumeration des modes d&#39;interaction avec la souris.">ImageViewer::MouseInteractionMode</a> <a class="code" href="class_q_extend_1_1_image_viewer.php#acda7196057a9a77cdd1c2ef8e81f7118" title="Interaction souris actuelle.">ImageViewer::mouseInteraction</a>()<span class="keyword"> const</span> 00080 <a name="l00044"></a>00044 <span class="keyword"></span>{ 00081 <a name="l00045"></a>00045 <span class="keywordflow">return</span> m_mouseInteraction; 00082 <a name="l00046"></a>00046 } 00083 <a name="l00047"></a>00047 00084 <a name="l00048"></a><a class="code" href="class_q_extend_1_1_image_viewer.php#a262a72d20a938df73c4fdbda353edfbe">00048</a> <span class="keywordtype">void</span> <a class="code" href="class_q_extend_1_1_image_viewer.php#a262a72d20a938df73c4fdbda353edfbe" title="Chargement de l&#39;image via son chemin.">ImageViewer::loadImage</a>(<span class="keyword">const</span> QString &imagePath) 00085 <a name="l00049"></a>00049 { 00086 <a name="l00050"></a>00050 <a class="code" href="class_q_extend_1_1_image_viewer.php#a262a72d20a938df73c4fdbda353edfbe" title="Chargement de l&#39;image via son chemin.">loadImage</a>(QImage(imagePath)); 00087 <a name="l00051"></a>00051 } 00088 <a name="l00052"></a>00052 00089 <a name="l00053"></a><a class="code" href="class_q_extend_1_1_image_viewer.php#ae194b47ea1fd1b38fdcedbb3325fff78">00053</a> <span class="keywordtype">void</span> <a class="code" href="class_q_extend_1_1_image_viewer.php#a262a72d20a938df73c4fdbda353edfbe" title="Chargement de l&#39;image via son chemin.">ImageViewer::loadImage</a>(<span class="keyword">const</span> QImage &image) 00090 <a name="l00054"></a>00054 { 00091 <a name="l00055"></a>00055 <a class="code" href="class_q_extend_1_1_image_viewer.php#a262a72d20a938df73c4fdbda353edfbe" title="Chargement de l&#39;image via son chemin.">loadImage</a>(QPixmap::fromImage(image)); 00092 <a name="l00056"></a>00056 } 00093 <a name="l00057"></a>00057 00094 <a name="l00058"></a><a class="code" href="class_q_extend_1_1_image_viewer.php#a9c7d14c568c2ac58137d845197888846">00058</a> <span class="keywordtype">void</span> <a class="code" href="class_q_extend_1_1_image_viewer.php#a262a72d20a938df73c4fdbda353edfbe" title="Chargement de l&#39;image via son chemin.">ImageViewer::loadImage</a>(<span class="keyword">const</span> QPixmap &pixmap) 00095 <a name="l00059"></a>00059 { 00096 <a name="l00060"></a>00060 m_imageRender.setPixmap(pixmap); 00097 <a name="l00061"></a>00061 m_imageRender.adjustSize(); 00098 <a name="l00062"></a>00062 m_scaleFactor = 1.0; 00099 <a name="l00063"></a>00063 m_imageRender.setScaledContents(<span class="keyword">true</span>); 00100 <a name="l00064"></a>00064 } 00101 <a name="l00065"></a>00065 00102 <a name="l00066"></a><a class="code" href="class_q_extend_1_1_image_viewer.php#a345ab676c1a029862f491191edbf0e3c">00066</a> <span class="keywordtype">void</span> <a class="code" href="class_q_extend_1_1_image_viewer.php#a345ab676c1a029862f491191edbf0e3c">ImageViewer::mouseMoveEvent</a>(QMouseEvent *event) 00103 <a name="l00067"></a>00067 { 00104 <a name="l00068"></a>00068 <span class="keywordflow">switch</span>(m_mouseInteraction) 00105 <a name="l00069"></a>00069 { 00106 <a name="l00070"></a>00070 <span class="keywordflow">case</span> <a class="code" href="class_q_extend_1_1_image_viewer.php#a06b3f5bc67757f5e29ed1e7f27137a07a277268224787bb6c2b4913fb8a27cadb">DragAndWheelzoom</a>: 00107 <a name="l00071"></a>00071 <span class="keywordflow">if</span>(m_isDragging) 00108 <a name="l00072"></a>00072 { 00109 <a name="l00073"></a>00073 QPointF delta = m_previousPos - <span class="keyword">event</span>->posF(); 00110 <a name="l00074"></a>00074 horizontalScrollBar()->setValue(horizontalScrollBar()->value() + delta.x()); 00111 <a name="l00075"></a>00075 verticalScrollBar()->setValue(verticalScrollBar()->value() + delta.y()); 00112 <a name="l00076"></a>00076 m_previousPos = <span class="keyword">event</span>->posF(); 00113 <a name="l00077"></a>00077 } 00114 <a name="l00078"></a>00078 <span class="keywordflow">break</span>; 00115 <a name="l00079"></a>00079 00116 <a name="l00080"></a>00080 <span class="keywordflow">default</span>: 00117 <a name="l00081"></a>00081 <span class="keywordflow">case</span> <a class="code" href="class_q_extend_1_1_image_viewer.php#a06b3f5bc67757f5e29ed1e7f27137a07a353d47348411d6041862aaf9eb9db69e">NoInteraction</a>: 00118 <a name="l00082"></a>00082 <a class="code" href="class_q_extend_1_1_image_viewer.php#a345ab676c1a029862f491191edbf0e3c">QScrollArea::mouseMoveEvent</a>(event); 00119 <a name="l00083"></a>00083 <span class="keywordflow">break</span>; 00120 <a name="l00084"></a>00084 } 00121 <a name="l00085"></a>00085 } 00122 <a name="l00086"></a>00086 00123 <a name="l00087"></a><a class="code" href="class_q_extend_1_1_image_viewer.php#a5a604736658d7dedd954ab889f7d9766">00087</a> <span class="keywordtype">void</span> <a class="code" href="class_q_extend_1_1_image_viewer.php#a5a604736658d7dedd954ab889f7d9766">ImageViewer::mousePressEvent</a>(QMouseEvent *event) 00124 <a name="l00088"></a>00088 { 00125 <a name="l00089"></a>00089 <span class="keywordflow">switch</span>(m_mouseInteraction) 00126 <a name="l00090"></a>00090 { 00127 <a name="l00091"></a>00091 <span class="keywordflow">case</span> <a class="code" href="class_q_extend_1_1_image_viewer.php#a06b3f5bc67757f5e29ed1e7f27137a07a277268224787bb6c2b4913fb8a27cadb">DragAndWheelzoom</a>: 00128 <a name="l00092"></a>00092 <span class="keywordflow">if</span>(event->button() == Qt::LeftButton) 00129 <a name="l00093"></a>00093 { 00130 <a name="l00094"></a>00094 m_isDragging = <span class="keyword">true</span>; 00131 <a name="l00095"></a>00095 m_previousPos = <span class="keyword">event</span>->posF(); 00132 <a name="l00096"></a>00096 QApplication::setOverrideCursor(QCursor(Qt::SizeAllCursor)); 00133 <a name="l00097"></a>00097 } 00134 <a name="l00098"></a>00098 <span class="keywordflow">break</span>; 00135 <a name="l00099"></a>00099 00136 <a name="l00100"></a>00100 <span class="keywordflow">default</span>: 00137 <a name="l00101"></a>00101 <span class="keywordflow">case</span> <a class="code" href="class_q_extend_1_1_image_viewer.php#a06b3f5bc67757f5e29ed1e7f27137a07a353d47348411d6041862aaf9eb9db69e">NoInteraction</a>: 00138 <a name="l00102"></a>00102 <a class="code" href="class_q_extend_1_1_image_viewer.php#a5a604736658d7dedd954ab889f7d9766">QScrollArea::mousePressEvent</a>(event); 00139 <a name="l00103"></a>00103 <span class="keywordflow">break</span>; 00140 <a name="l00104"></a>00104 } 00141 <a name="l00105"></a>00105 00142 <a name="l00106"></a>00106 } 00143 <a name="l00107"></a>00107 00144 <a name="l00108"></a><a class="code" href="class_q_extend_1_1_image_viewer.php#a8eaa1de207bb1cae41db007060c1b4c1">00108</a> <span class="keywordtype">void</span> <a class="code" href="class_q_extend_1_1_image_viewer.php#a8eaa1de207bb1cae41db007060c1b4c1">ImageViewer::mouseReleaseEvent</a>(QMouseEvent *event) 00145 <a name="l00109"></a>00109 { 00146 <a name="l00110"></a>00110 <span class="keywordflow">switch</span>(m_mouseInteraction) 00147 <a name="l00111"></a>00111 { 00148 <a name="l00112"></a>00112 <span class="keywordflow">case</span> <a class="code" href="class_q_extend_1_1_image_viewer.php#a06b3f5bc67757f5e29ed1e7f27137a07a277268224787bb6c2b4913fb8a27cadb">DragAndWheelzoom</a>: 00149 <a name="l00113"></a>00113 m_isDragging = <span class="keyword">false</span>; 00150 <a name="l00114"></a>00114 QApplication::restoreOverrideCursor(); 00151 <a name="l00115"></a>00115 <span class="keywordflow">break</span>; 00152 <a name="l00116"></a>00116 00153 <a name="l00117"></a>00117 <span class="keywordflow">default</span>: 00154 <a name="l00118"></a>00118 <span class="keywordflow">case</span> <a class="code" href="class_q_extend_1_1_image_viewer.php#a06b3f5bc67757f5e29ed1e7f27137a07a353d47348411d6041862aaf9eb9db69e">NoInteraction</a>: 00155 <a name="l00119"></a>00119 <a class="code" href="class_q_extend_1_1_image_viewer.php#a8eaa1de207bb1cae41db007060c1b4c1">QScrollArea::mouseReleaseEvent</a>(event); 00156 <a name="l00120"></a>00120 <span class="keywordflow">break</span>; 00157 <a name="l00121"></a>00121 } 00158 <a name="l00122"></a>00122 } 00159 <a name="l00123"></a>00123 00160 <a name="l00124"></a><a class="code" href="class_q_extend_1_1_image_viewer.php#af43106aa40526d525db5b16375b81904">00124</a> <span class="keywordtype">void</span> <a class="code" href="class_q_extend_1_1_image_viewer.php#af43106aa40526d525db5b16375b81904">ImageViewer::wheelEvent</a>(QWheelEvent *event) 00161 <a name="l00125"></a>00125 { 00162 <a name="l00126"></a>00126 <span class="keywordflow">switch</span>(m_mouseInteraction) 00163 <a name="l00127"></a>00127 { 00164 <a name="l00128"></a>00128 <span class="keywordflow">case</span> <a class="code" href="class_q_extend_1_1_image_viewer.php#a06b3f5bc67757f5e29ed1e7f27137a07a277268224787bb6c2b4913fb8a27cadb">DragAndWheelzoom</a>: 00165 <a name="l00129"></a>00129 { 00166 <a name="l00130"></a>00130 <span class="keywordflow">if</span>(event->delta() > 0) 00167 <a name="l00131"></a>00131 scaleImage(1.2); 00168 <a name="l00132"></a>00132 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(event->delta() < 0) 00169 <a name="l00133"></a>00133 scaleImage(0.8); 00170 <a name="l00134"></a>00134 } 00171 <a name="l00135"></a>00135 <span class="keywordflow">break</span>; 00172 <a name="l00136"></a>00136 00173 <a name="l00137"></a>00137 <span class="keywordflow">default</span>: 00174 <a name="l00138"></a>00138 <span class="keywordflow">case</span> <a class="code" href="class_q_extend_1_1_image_viewer.php#a06b3f5bc67757f5e29ed1e7f27137a07a353d47348411d6041862aaf9eb9db69e">NoInteraction</a>: 00175 <a name="l00139"></a>00139 <a class="code" href="class_q_extend_1_1_image_viewer.php#af43106aa40526d525db5b16375b81904">QScrollArea::wheelEvent</a>(event); 00176 <a name="l00140"></a>00140 <span class="keywordflow">break</span>; 00177 <a name="l00141"></a>00141 } 00178 <a name="l00142"></a>00142 } 00179 <a name="l00143"></a>00143 00180 <a name="l00144"></a>00144 <span class="keywordtype">void</span> ImageViewer::scaleImage(<span class="keywordtype">double</span> factor) 00181 <a name="l00145"></a>00145 { 00182 <a name="l00146"></a>00146 <span class="keywordflow">if</span>((0.2 <= (m_scaleFactor * factor)) && ((m_scaleFactor * factor) <= 3.0)) 00183 <a name="l00147"></a>00147 { 00184 <a name="l00148"></a>00148 m_scaleFactor *= factor; 00185 <a name="l00149"></a>00149 m_imageRender.resize(m_scaleFactor * m_imageRender.pixmap()->size()); 00186 <a name="l00150"></a>00150 00187 <a name="l00151"></a>00151 adjustScrollBar(horizontalScrollBar(), factor); 00188 <a name="l00152"></a>00152 adjustScrollBar(verticalScrollBar(), factor); 00189 <a name="l00153"></a>00153 } 00190 <a name="l00154"></a>00154 } 00191 <a name="l00155"></a>00155 00192 <a name="l00156"></a>00156 <span class="keywordtype">void</span> ImageViewer::adjustScrollBar(QScrollBar *scrollBar, <span class="keywordtype">double</span> factor) 00193 <a name="l00157"></a>00157 { 00194 <a name="l00158"></a>00158 scrollBar->setValue(<span class="keywordtype">int</span>(factor * scrollBar->value() 00195 <a name="l00159"></a>00159 + ((factor - 1) * scrollBar->pageStep()/2))); 00196 <a name="l00160"></a>00160 } 00197 </pre></div></div> 00198 </div> 00199 <?php 00200 echo utf8_decode(ob_get_clean()); 00201 include($_SERVER["DOCUMENT_ROOT"]."/template/pied.php"); 00202 ?>
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