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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">draganddrop/puzzle/mainwindow.cpp</span> <!-- $$$draganddrop/puzzle/mainwindow.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 <QtGui></span> <span class="preprocessor">#include <stdlib.h></span> <span class="preprocessor">#include "mainwindow.h"</span> <span class="preprocessor">#include "pieceslist.h"</span> <span class="preprocessor">#include "puzzlewidget.h"</span> MainWindow<span class="operator">::</span>MainWindow(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent) : <span class="type"><a href="qmainwindow.html">QMainWindow</a></span>(parent) { setupMenus(); setupWidgets(); setSizePolicy(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span>(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Fixed<span class="operator">,</span> <span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Fixed)); setWindowTitle(tr(<span class="string">"Puzzle"</span>)); } <span class="type">void</span> MainWindow<span class="operator">::</span>openImage(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&</span>path) { <span class="type"><a href="qstring.html">QString</a></span> fileName <span class="operator">=</span> path; <span class="keyword">if</span> (fileName<span class="operator">.</span>isNull()) 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 Image"</span>)<span class="operator">,</span> <span class="string">""</span><span class="operator">,</span> <span class="string">"Image Files (*.png *.jpg *.bmp)"</span>); <span class="keyword">if</span> (<span class="operator">!</span>fileName<span class="operator">.</span>isEmpty()) { <span class="type"><a href="qpixmap.html">QPixmap</a></span> newImage; <span class="keyword">if</span> (<span class="operator">!</span>newImage<span class="operator">.</span>load(fileName)) { <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Open Image"</span>)<span class="operator">,</span> tr(<span class="string">"The image file could not be loaded."</span>)<span class="operator">,</span> <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>Cancel); <span class="keyword">return</span>; } puzzleImage <span class="operator">=</span> newImage; setupPuzzle(); } } <span class="type">void</span> MainWindow<span class="operator">::</span>setCompleted() { <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>information(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Puzzle Completed"</span>)<span class="operator">,</span> tr(<span class="string">"Congratulations! You have completed the puzzle!\n"</span> <span class="string">"Click OK to start again."</span>)<span class="operator">,</span> <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>Ok); setupPuzzle(); } <span class="type">void</span> MainWindow<span class="operator">::</span>setupPuzzle() { <span class="type">int</span> size <span class="operator">=</span> <a href="qtglobal.html#qMin">qMin</a>(puzzleImage<span class="operator">.</span>width()<span class="operator">,</span> puzzleImage<span class="operator">.</span>height()); puzzleImage <span class="operator">=</span> puzzleImage<span class="operator">.</span>copy((puzzleImage<span class="operator">.</span>width() <span class="operator">-</span> size)<span class="operator">/</span><span class="number">2</span><span class="operator">,</span> (puzzleImage<span class="operator">.</span>height() <span class="operator">-</span> size)<span class="operator">/</span><span class="number">2</span><span class="operator">,</span> size<span class="operator">,</span> size)<span class="operator">.</span>scaled(puzzleWidget<span class="operator">-</span><span class="operator">></span>width()<span class="operator">,</span> puzzleWidget<span class="operator">-</span><span class="operator">></span>height()<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>IgnoreAspectRatio<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>SmoothTransformation); piecesList<span class="operator">-</span><span class="operator">></span>clear(); <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> <span class="number">5</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">0</span>; x <span class="operator"><</span> <span class="number">5</span>; <span class="operator">+</span><span class="operator">+</span>x) { <span class="type">int</span> pieceSize <span class="operator">=</span> puzzleWidget<span class="operator">-</span><span class="operator">></span>pieceSize(); <span class="type"><a href="qpixmap.html">QPixmap</a></span> pieceImage <span class="operator">=</span> puzzleImage<span class="operator">.</span>copy(x <span class="operator">*</span> pieceSize<span class="operator">,</span> y <span class="operator">*</span> pieceSize<span class="operator">,</span> pieceSize<span class="operator">,</span> pieceSize); piecesList<span class="operator">-</span><span class="operator">></span>addPiece(pieceImage<span class="operator">,</span> <span class="type"><a href="qpoint.html">QPoint</a></span>(x<span class="operator">,</span> y)); } } qsrand(<span class="type"><a href="qcursor.html">QCursor</a></span><span class="operator">::</span>pos()<span class="operator">.</span>x() <span class="operator">^</span> <span class="type"><a href="qcursor.html">QCursor</a></span><span class="operator">::</span>pos()<span class="operator">.</span>y()); <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> piecesList<span class="operator">-</span><span class="operator">></span>count(); <span class="operator">+</span><span class="operator">+</span>i) { <span class="keyword">if</span> (<span class="type">int</span>(<span class="number">2.0</span><span class="operator">*</span>qrand()<span class="operator">/</span>(RAND_MAX<span class="operator">+</span><span class="number">1.0</span>)) <span class="operator">=</span><span class="operator">=</span> <span class="number">1</span>) { <span class="type"><a href="qlistwidgetitem.html">QListWidgetItem</a></span> <span class="operator">*</span>item <span class="operator">=</span> piecesList<span class="operator">-</span><span class="operator">></span>takeItem(i); piecesList<span class="operator">-</span><span class="operator">></span>insertItem(<span class="number">0</span><span class="operator">,</span> item); } } puzzleWidget<span class="operator">-</span><span class="operator">></span>clear(); } <span class="type">void</span> MainWindow<span class="operator">::</span>setupMenus() { <span class="type"><a href="qmenu.html">QMenu</a></span> <span class="operator">*</span>fileMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">></span>addMenu(tr(<span class="string">"&File"</span>)); <span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>openAction <span class="operator">=</span> fileMenu<span class="operator">-</span><span class="operator">></span>addAction(tr(<span class="string">"&Open..."</span>)); openAction<span class="operator">-</span><span class="operator">></span>setShortcuts(<span class="type"><a href="qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>Open); <span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>exitAction <span class="operator">=</span> fileMenu<span class="operator">-</span><span class="operator">></span>addAction(tr(<span class="string">"E&xit"</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); <span class="type"><a href="qmenu.html">QMenu</a></span> <span class="operator">*</span>gameMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">></span>addMenu(tr(<span class="string">"&Game"</span>)); <span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>restartAction <span class="operator">=</span> gameMenu<span class="operator">-</span><span class="operator">></span>addAction(tr(<span class="string">"&Restart"</span>)); connect(openAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(openImage())); connect(exitAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> qApp<span class="operator">,</span> SLOT(quit())); connect(restartAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(setupPuzzle())); } <span class="type">void</span> MainWindow<span class="operator">::</span>setupWidgets() { <span class="type"><a href="qframe.html">QFrame</a></span> <span class="operator">*</span>frame <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qframe.html">QFrame</a></span>; <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span> <span class="operator">*</span>frameLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span>(frame); <span class="preprocessor">#if defined(Q_OS_SYMBIAN) || defined(Q_WS_SIMULATOR)</span> puzzleWidget <span class="operator">=</span> <span class="keyword">new</span> PuzzleWidget(<span class="number">260</span>); <span class="preprocessor">#else</span> puzzleWidget <span class="operator">=</span> <span class="keyword">new</span> PuzzleWidget(<span class="number">400</span>); <span class="preprocessor">#endif</span> piecesList <span class="operator">=</span> <span class="keyword">new</span> PiecesList(puzzleWidget<span class="operator">-</span><span class="operator">></span>pieceSize()<span class="operator">,</span> <span class="keyword">this</span>); connect(puzzleWidget<span class="operator">,</span> SIGNAL(puzzleCompleted())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(setCompleted())<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>QueuedConnection); frameLayout<span class="operator">-</span><span class="operator">></span>addWidget(piecesList); frameLayout<span class="operator">-</span><span class="operator">></span>addWidget(puzzleWidget); setCentralWidget(frame); }</pre> </div> <!-- @@@draganddrop/puzzle/mainwindow.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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