<?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>Qt 4.6: main.cpp Example File (animation/appchooser/main.cpp)</title> <link href="classic.css" rel="stylesheet" type="text/css" /> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td align="left" valign="top" width="32"><a href="http://qt.nokia.com/"><img src="images/qt-logo.png" align="left" border="0" /></a></td> <td width="1"> </td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a> · <a href="classes.html"><font color="#004faf">All Classes</font></a> · <a href="functions.html"><font color="#004faf">All Functions</font></a> · <a href="overviews.html"><font color="#004faf">Overviews</font></a></td></tr></table><h1 class="title">main.cpp Example File<br /><span class="small-subtitle">animation/appchooser/main.cpp</span> </h1> <pre><span class="comment"> /**************************************************************************** ** ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the QtCore module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** Commercial Usage ** Licensees holding valid Qt Commercial licenses may use this file in ** accordance with the Qt Commercial License Agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and Nokia. ** ** 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, Nokia gives you certain additional ** rights. These rights are described in the Nokia 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. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. ** $QT_END_LICENSE$ ** ****************************************************************************/</span> #include <QtCore> #include <QtGui> class Pixmap : public QGraphicsWidget { Q_OBJECT public: Pixmap(const QPixmap &pix, QGraphicsItem *parent = 0) : QGraphicsWidget(parent), orig(pix), p(pix) { } void paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *) { painter->drawPixmap(QPointF(), p); } virtual void mousePressEvent(QGraphicsSceneMouseEvent * ) { emit clicked(); } virtual void setGeometry(const QRectF &rect) { QGraphicsWidget::setGeometry(rect); if (rect.size().width() > orig.size().width()) p = orig.scaled(rect.size().toSize()); else p = orig; } Q_SIGNALS: void clicked(); private: QPixmap orig; QPixmap p; }; void createStates(const QObjectList &objects, const QRect &selectedRect, QState *parent) { for (int i = 0; i < objects.size(); ++i) { QState *state = new QState(parent); state->assignProperty(objects.at(i), "geometry", selectedRect); parent->addTransition(objects.at(i), SIGNAL(clicked()), state); } } void createAnimations(const QObjectList &objects, QStateMachine *machine) { for (int i=0; i<objects.size(); ++i) machine->addDefaultAnimation(new QPropertyAnimation(objects.at(i), "geometry")); } int main(int argc, char **argv) { Q_INIT_RESOURCE(appchooser); QApplication app(argc, argv); Pixmap *p1 = new Pixmap(QPixmap(":/digikam.png")); Pixmap *p2 = new Pixmap(QPixmap(":/akregator.png")); Pixmap *p3 = new Pixmap(QPixmap(":/accessories-dictionary.png")); Pixmap *p4 = new Pixmap(QPixmap(":/k3b.png")); p1->setObjectName("p1"); p2->setObjectName("p2"); p3->setObjectName("p3"); p4->setObjectName("p4"); p1->setGeometry(QRectF(0.0, 0.0, 64.0, 64.0)); p2->setGeometry(QRectF(236.0, 0.0, 64.0, 64.0)); p3->setGeometry(QRectF(236.0, 236.0, 64.0, 64.0)); p4->setGeometry(QRectF(0.0, 236.0, 64.0, 64.0)); QGraphicsScene scene(0, 0, 300, 300); scene.setBackgroundBrush(Qt::white); scene.addItem(p1); scene.addItem(p2); scene.addItem(p3); scene.addItem(p4); QGraphicsView window(&scene); window.setFrameStyle(0); window.setAlignment(Qt::AlignLeft | Qt::AlignTop); window.setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); window.setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff); QStateMachine machine; machine.setGlobalRestorePolicy(QStateMachine::RestoreProperties); QState *group = new QState(&machine); group->setObjectName("group"); QRect selectedRect(86, 86, 128, 128); QState *idleState = new QState(group); group->setInitialState(idleState); QObjectList objects; objects << p1 << p2 << p3 << p4; createStates(objects, selectedRect, group); createAnimations(objects, &machine); machine.setInitialState(group); machine.start(); window.resize(300, 300); window.show(); return app.exec(); } #include "main.moc"</pre> <p /><address><hr /><div align="center"> <table width="100%" cellspacing="0" border="0"><tr class="address"> <td width="40%" align="left">Copyright © 2010 Nokia Corporation and/or its subsidiary(-ies)</td> <td width="20%" align="center"><a href="trademarks.html">Trademarks</a></td> <td width="40%" align="right"><div align="right">Qt 4.6.3</div></td> </tr></table></div></address></body> </html>