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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">mainwindow.cpp Example File</h1> <span class="small-subtitle">widgets/tablet/mainwindow.cpp</span> <!-- $$$widgets/tablet/mainwindow.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 "mainwindow.h"</span> <span class="preprocessor">#include "tabletcanvas.h"</span> MainWindow<span class="operator">::</span>MainWindow(TabletCanvas <span class="operator">*</span>canvas) { myCanvas <span class="operator">=</span> canvas; createActions(); createMenus(); myCanvas<span class="operator">-</span><span class="operator">></span>setColor(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>red); myCanvas<span class="operator">-</span><span class="operator">></span>setLineWidthType(TabletCanvas<span class="operator">::</span>LineWidthPressure); myCanvas<span class="operator">-</span><span class="operator">></span>setAlphaChannelType(TabletCanvas<span class="operator">::</span>NoAlpha); myCanvas<span class="operator">-</span><span class="operator">></span>setColorSaturationType(TabletCanvas<span class="operator">::</span>NoSaturation); setWindowTitle(tr(<span class="string">"Tablet Example"</span>)); setCentralWidget(myCanvas); } <span class="type">void</span> MainWindow<span class="operator">::</span>brushColorAct() { <span class="type"><a href="qcolor.html">QColor</a></span> color <span class="operator">=</span> <span class="type"><a href="qcolordialog.html">QColorDialog</a></span><span class="operator">::</span>getColor(myCanvas<span class="operator">-</span><span class="operator">></span>color()); <span class="keyword">if</span> (color<span class="operator">.</span>isValid()) myCanvas<span class="operator">-</span><span class="operator">></span>setColor(color); } <span class="type">void</span> MainWindow<span class="operator">::</span>alphaActionTriggered(<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>action) { <span class="keyword">if</span> (action <span class="operator">=</span><span class="operator">=</span> alphaChannelPressureAction) { myCanvas<span class="operator">-</span><span class="operator">></span>setAlphaChannelType(TabletCanvas<span class="operator">::</span>AlphaPressure); } <span class="keyword">else</span> <span class="keyword">if</span> (action <span class="operator">=</span><span class="operator">=</span> alphaChannelTiltAction) { myCanvas<span class="operator">-</span><span class="operator">></span>setAlphaChannelType(TabletCanvas<span class="operator">::</span>AlphaTilt); } <span class="keyword">else</span> { myCanvas<span class="operator">-</span><span class="operator">></span>setAlphaChannelType(TabletCanvas<span class="operator">::</span>NoAlpha); } } <span class="type">void</span> MainWindow<span class="operator">::</span>lineWidthActionTriggered(<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>action) { <span class="keyword">if</span> (action <span class="operator">=</span><span class="operator">=</span> lineWidthPressureAction) { myCanvas<span class="operator">-</span><span class="operator">></span>setLineWidthType(TabletCanvas<span class="operator">::</span>LineWidthPressure); } <span class="keyword">else</span> <span class="keyword">if</span> (action <span class="operator">=</span><span class="operator">=</span> lineWidthTiltAction) { myCanvas<span class="operator">-</span><span class="operator">></span>setLineWidthType(TabletCanvas<span class="operator">::</span>LineWidthTilt); } <span class="keyword">else</span> { myCanvas<span class="operator">-</span><span class="operator">></span>setLineWidthType(TabletCanvas<span class="operator">::</span>NoLineWidth); } } <span class="type">void</span> MainWindow<span class="operator">::</span>saturationActionTriggered(<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>action) { <span class="keyword">if</span> (action <span class="operator">=</span><span class="operator">=</span> colorSaturationVTiltAction) { myCanvas<span class="operator">-</span><span class="operator">></span>setColorSaturationType(TabletCanvas<span class="operator">::</span>SaturationVTilt); } <span class="keyword">else</span> <span class="keyword">if</span> (action <span class="operator">=</span><span class="operator">=</span> colorSaturationHTiltAction) { myCanvas<span class="operator">-</span><span class="operator">></span>setColorSaturationType(TabletCanvas<span class="operator">::</span>SaturationHTilt); } <span class="keyword">else</span> <span class="keyword">if</span> (action <span class="operator">=</span><span class="operator">=</span> colorSaturationPressureAction) { myCanvas<span class="operator">-</span><span class="operator">></span>setColorSaturationType(TabletCanvas<span class="operator">::</span>SaturationPressure); } <span class="keyword">else</span> { myCanvas<span class="operator">-</span><span class="operator">></span>setColorSaturationType(TabletCanvas<span class="operator">::</span>NoSaturation); } } <span class="type">void</span> MainWindow<span class="operator">::</span>saveAct() { <span class="type"><a href="qstring.html">QString</a></span> path <span class="operator">=</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>currentPath() <span class="operator">+</span> <span class="string">"/untitled.png"</span>; <span class="type"><a href="qstring.html">QString</a></span> fileName <span class="operator">=</span> <span class="type"><a href="qfiledialog.html">QFileDialog</a></span><span class="operator">::</span>getSaveFileName(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Save Picture"</span>)<span class="operator">,</span> path); <span class="keyword">if</span> (<span class="operator">!</span>myCanvas<span class="operator">-</span><span class="operator">></span>saveImage(fileName)) <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>information(<span class="keyword">this</span><span class="operator">,</span> <span class="string">"Error Saving Picture"</span><span class="operator">,</span> <span class="string">"Could not save the image"</span>); } <span class="type">void</span> MainWindow<span class="operator">::</span>loadAct() { <span class="type"><a href="qstring.html">QString</a></span> fileName <span class="operator">=</span> <span class="type"><a href="qfiledialog.html">QFileDialog</a></span><span class="operator">::</span>getOpenFileName(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Open Picture"</span>)<span class="operator">,</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>currentPath()); <span class="keyword">if</span> (<span class="operator">!</span>myCanvas<span class="operator">-</span><span class="operator">></span>loadImage(fileName)) <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>information(<span class="keyword">this</span><span class="operator">,</span> <span class="string">"Error Opening Picture"</span><span class="operator">,</span> <span class="string">"Could not open picture"</span>); } <span class="type">void</span> MainWindow<span class="operator">::</span>aboutAct() { <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>about(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"About Tablet Example"</span>)<span class="operator">,</span> tr(<span class="string">"This example shows use of a Wacom tablet in Qt"</span>)); } <span class="type">void</span> MainWindow<span class="operator">::</span>createActions() { brushColorAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"&Brush Color..."</span>)<span class="operator">,</span> <span class="keyword">this</span>); brushColorAction<span class="operator">-</span><span class="operator">></span>setShortcut(tr(<span class="string">"Ctrl+C"</span>)); connect(brushColorAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(brushColorAct())); alphaChannelPressureAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"&Pressure"</span>)<span class="operator">,</span> <span class="keyword">this</span>); alphaChannelPressureAction<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); alphaChannelTiltAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"&Tilt"</span>)<span class="operator">,</span> <span class="keyword">this</span>); alphaChannelTiltAction<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); noAlphaChannelAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"No Alpha Channel"</span>)<span class="operator">,</span> <span class="keyword">this</span>); noAlphaChannelAction<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); noAlphaChannelAction<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>); alphaChannelGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qactiongroup.html">QActionGroup</a></span>(<span class="keyword">this</span>); alphaChannelGroup<span class="operator">-</span><span class="operator">></span>addAction(alphaChannelPressureAction); alphaChannelGroup<span class="operator">-</span><span class="operator">></span>addAction(alphaChannelTiltAction); alphaChannelGroup<span class="operator">-</span><span class="operator">></span>addAction(noAlphaChannelAction); connect(alphaChannelGroup<span class="operator">,</span> SIGNAL(triggered(<span class="type"><a href="qaction.html">QAction</a></span><span class="operator">*</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(alphaActionTriggered(<span class="type"><a href="qaction.html">QAction</a></span><span class="operator">*</span>))); colorSaturationVTiltAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"&Vertical Tilt"</span>)<span class="operator">,</span> <span class="keyword">this</span>); colorSaturationVTiltAction<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); colorSaturationHTiltAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"&Horizontal Tilt"</span>)<span class="operator">,</span> <span class="keyword">this</span>); colorSaturationHTiltAction<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); colorSaturationPressureAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"&Pressure"</span>)<span class="operator">,</span> <span class="keyword">this</span>); colorSaturationPressureAction<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); noColorSaturationAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"&No Color Saturation"</span>)<span class="operator">,</span> <span class="keyword">this</span>); noColorSaturationAction<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); noColorSaturationAction<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>); colorSaturationGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qactiongroup.html">QActionGroup</a></span>(<span class="keyword">this</span>); colorSaturationGroup<span class="operator">-</span><span class="operator">></span>addAction(colorSaturationVTiltAction); colorSaturationGroup<span class="operator">-</span><span class="operator">></span>addAction(colorSaturationHTiltAction); colorSaturationGroup<span class="operator">-</span><span class="operator">></span>addAction(colorSaturationPressureAction); colorSaturationGroup<span class="operator">-</span><span class="operator">></span>addAction(noColorSaturationAction); connect(colorSaturationGroup<span class="operator">,</span> SIGNAL(triggered(<span class="type"><a href="qaction.html">QAction</a></span><span class="operator">*</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(saturationActionTriggered(<span class="type"><a href="qaction.html">QAction</a></span><span class="operator">*</span>))); lineWidthPressureAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"&Pressure"</span>)<span class="operator">,</span> <span class="keyword">this</span>); lineWidthPressureAction<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); lineWidthPressureAction<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>); lineWidthTiltAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"&Tilt"</span>)<span class="operator">,</span> <span class="keyword">this</span>); lineWidthTiltAction<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); lineWidthFixedAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"&Fixed"</span>)<span class="operator">,</span> <span class="keyword">this</span>); lineWidthFixedAction<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); lineWidthGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qactiongroup.html">QActionGroup</a></span>(<span class="keyword">this</span>); lineWidthGroup<span class="operator">-</span><span class="operator">></span>addAction(lineWidthPressureAction); lineWidthGroup<span class="operator">-</span><span class="operator">></span>addAction(lineWidthTiltAction); lineWidthGroup<span class="operator">-</span><span class="operator">></span>addAction(lineWidthFixedAction); connect(lineWidthGroup<span class="operator">,</span> SIGNAL(triggered(<span class="type"><a href="qaction.html">QAction</a></span><span class="operator">*</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(lineWidthActionTriggered(<span class="type"><a href="qaction.html">QAction</a></span><span class="operator">*</span>))); exitAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"E&xit"</span>)<span class="operator">,</span> <span class="keyword">this</span>); exitAction<span class="operator">-</span><span class="operator">></span>setShortcuts(<span class="type"><a href="qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>Quit); connect(exitAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(close())); loadAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"&Open..."</span>)<span class="operator">,</span> <span class="keyword">this</span>); loadAction<span class="operator">-</span><span class="operator">></span>setShortcuts(<span class="type"><a href="qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>Open); connect(loadAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(loadAct())); saveAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"&Save As..."</span>)<span class="operator">,</span> <span class="keyword">this</span>); saveAction<span class="operator">-</span><span class="operator">></span>setShortcuts(<span class="type"><a href="qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>SaveAs); connect(saveAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(saveAct())); aboutAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"A&bout"</span>)<span class="operator">,</span> <span class="keyword">this</span>); aboutAction<span class="operator">-</span><span class="operator">></span>setShortcut(tr(<span class="string">"Ctrl+B"</span>)); connect(aboutAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(aboutAct())); aboutQtAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"About &Qt"</span>)<span class="operator">,</span> <span class="keyword">this</span>); aboutQtAction<span class="operator">-</span><span class="operator">></span>setShortcut(tr(<span class="string">"Ctrl+Q"</span>)); connect(aboutQtAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> qApp<span class="operator">,</span> SLOT(aboutQt())); } <span class="type">void</span> MainWindow<span class="operator">::</span>createMenus() { fileMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">></span>addMenu(tr(<span class="string">"&File"</span>)); fileMenu<span class="operator">-</span><span class="operator">></span>addAction(loadAction); fileMenu<span class="operator">-</span><span class="operator">></span>addAction(saveAction); fileMenu<span class="operator">-</span><span class="operator">></span>addSeparator(); fileMenu<span class="operator">-</span><span class="operator">></span>addAction(exitAction); brushMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">></span>addMenu(tr(<span class="string">"&Brush"</span>)); brushMenu<span class="operator">-</span><span class="operator">></span>addAction(brushColorAction); tabletMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">></span>addMenu(tr(<span class="string">"&Tablet"</span>)); lineWidthMenu <span class="operator">=</span> tabletMenu<span class="operator">-</span><span class="operator">></span>addMenu(tr(<span class="string">"&Line Width"</span>)); lineWidthMenu<span class="operator">-</span><span class="operator">></span>addAction(lineWidthPressureAction); lineWidthMenu<span class="operator">-</span><span class="operator">></span>addAction(lineWidthTiltAction); lineWidthMenu<span class="operator">-</span><span class="operator">></span>addAction(lineWidthFixedAction); alphaChannelMenu <span class="operator">=</span> tabletMenu<span class="operator">-</span><span class="operator">></span>addMenu(tr(<span class="string">"&Alpha Channel"</span>)); alphaChannelMenu<span class="operator">-</span><span class="operator">></span>addAction(alphaChannelPressureAction); alphaChannelMenu<span class="operator">-</span><span class="operator">></span>addAction(alphaChannelTiltAction); alphaChannelMenu<span class="operator">-</span><span class="operator">></span>addAction(noAlphaChannelAction); colorSaturationMenu <span class="operator">=</span> tabletMenu<span class="operator">-</span><span class="operator">></span>addMenu(tr(<span class="string">"&Color Saturation"</span>)); colorSaturationMenu<span class="operator">-</span><span class="operator">></span>addAction(colorSaturationVTiltAction); colorSaturationMenu<span class="operator">-</span><span class="operator">></span>addAction(colorSaturationHTiltAction); colorSaturationMenu<span class="operator">-</span><span class="operator">></span>addAction(noColorSaturationAction); helpMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">></span>addMenu(<span class="string">"&Help"</span>); helpMenu<span class="operator">-</span><span class="operator">></span>addAction(aboutAction); helpMenu<span class="operator">-</span><span class="operator">></span>addAction(aboutQtAction); }</pre> </div> <!-- @@@widgets/tablet/mainwindow.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. Documentation contributions included herein are the copyrights of their respective owners.</p> <br /> <p> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.</p> <p> Documentation sources may be obtained from <a href="http://www.qt-project.org"> www.qt-project.org</a>.</p> <br /> <p> Digia, Qt and their respective logos are trademarks of Digia Plc in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. <a title="Privacy Policy" href="http://en.gitorious.org/privacy_policy/">Privacy Policy</a></p> </div> <script src="scripts/functions.js" type="text/javascript"></script> </body> </html>