<?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: robot.cpp Example File (graphicsview/dragdroprobot/robot.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">robot.cpp Example File<br /><span class="small-subtitle">graphicsview/dragdroprobot/robot.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 examples 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 <QtGui> #include "robot.h" RobotPart::RobotPart(QGraphicsItem *parent) : QGraphicsItem(parent), color(Qt::lightGray), dragOver(false) { setAcceptDrops(true); } void RobotPart::dragEnterEvent(QGraphicsSceneDragDropEvent *event) { if (event->mimeData()->hasColor() || (qgraphicsitem_cast<RobotHead *>(this) && event->mimeData()->hasImage())) { event->setAccepted(true); dragOver = true; update(); } else { event->setAccepted(false); } } void RobotPart::dragLeaveEvent(QGraphicsSceneDragDropEvent *event) { Q_UNUSED(event); dragOver = false; update(); } void RobotPart::dropEvent(QGraphicsSceneDragDropEvent *event) { dragOver = false; if (event->mimeData()->hasColor()) color = qVariantValue<QColor>(event->mimeData()->colorData()); else if (event->mimeData()->hasImage()) pixmap = qVariantValue<QPixmap>(event->mimeData()->imageData()); update(); } RobotHead::RobotHead(QGraphicsItem *parent) : RobotPart(parent) { } QRectF RobotHead::boundingRect() const { return QRectF(-15, -50, 30, 50); } void RobotHead::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) { Q_UNUSED(option); Q_UNUSED(widget); if (pixmap.isNull()) { painter->setBrush(dragOver ? color.light(130) : color); painter->drawRoundedRect(-10, -30, 20, 30, 25, 25, Qt::RelativeSize); painter->setBrush(Qt::white); painter->drawEllipse(-7, -3 - 20, 7, 7); painter->drawEllipse(0, -3 - 20, 7, 7); painter->setBrush(Qt::black); painter->drawEllipse(-5, -1 - 20, 2, 2); painter->drawEllipse(2, -1 - 20, 2, 2); painter->setPen(QPen(Qt::black, 2)); painter->setBrush(Qt::NoBrush); painter->drawArc(-6, -2 - 20, 12, 15, 190 * 16, 160 * 16); } else { painter->scale(.2272, .2824); painter->drawPixmap(QPointF(-15 * 4.4, -50 * 3.54), pixmap); } } int RobotHead::type() const { return Type; } RobotTorso::RobotTorso(QGraphicsItem *parent) : RobotPart(parent) { } QRectF RobotTorso::boundingRect() const { return QRectF(-30, -20, 60, 60); } void RobotTorso::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) { Q_UNUSED(option); Q_UNUSED(widget); painter->setBrush(dragOver ? color.light(130) : color); painter->drawRoundedRect(-20, -20, 40, 60, 25, 25, Qt::RelativeSize); painter->drawEllipse(-25, -20, 20, 20); painter->drawEllipse(5, -20, 20, 20); painter->drawEllipse(-20, 22, 20, 20); painter->drawEllipse(0, 22, 20, 20); } RobotLimb::RobotLimb(QGraphicsItem *parent) : RobotPart(parent) { } QRectF RobotLimb::boundingRect() const { return QRectF(-5, -5, 40, 10); } void RobotLimb::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) { Q_UNUSED(option); Q_UNUSED(widget); painter->setBrush(dragOver ? color.light(130) : color); painter->drawRoundedRect(boundingRect(), 50, 50, Qt::RelativeSize); painter->drawEllipse(-5, -5, 10, 10); } Robot::Robot() { QGraphicsItem *torsoItem = new RobotTorso(this); QGraphicsItem *headItem = new RobotHead(torsoItem); QGraphicsItem *upperLeftArmItem = new RobotLimb(torsoItem); QGraphicsItem *lowerLeftArmItem = new RobotLimb(upperLeftArmItem); QGraphicsItem *upperRightArmItem = new RobotLimb(torsoItem); QGraphicsItem *lowerRightArmItem = new RobotLimb(upperRightArmItem); QGraphicsItem *upperRightLegItem = new RobotLimb(torsoItem); QGraphicsItem *lowerRightLegItem = new RobotLimb(upperRightLegItem); QGraphicsItem *upperLeftLegItem = new RobotLimb(torsoItem); QGraphicsItem *lowerLeftLegItem = new RobotLimb(upperLeftLegItem); headItem->setPos(0, -18); upperLeftArmItem->setPos(-15, -10); lowerLeftArmItem->setPos(30, 0); upperRightArmItem->setPos(15, -10); lowerRightArmItem->setPos(30, 0); upperRightLegItem->setPos(10, 32); lowerRightLegItem->setPos(30, 0); upperLeftLegItem->setPos(-10, 32); lowerLeftLegItem->setPos(30, 0); timeLine = new QTimeLine; QGraphicsItemAnimation *headAnimation = new QGraphicsItemAnimation; headAnimation->setItem(headItem); headAnimation->setTimeLine(timeLine); headAnimation->setRotationAt(0, 20); headAnimation->setRotationAt(1, -20); headAnimation->setScaleAt(1, 1.1, 1.1); QGraphicsItemAnimation *upperLeftArmAnimation = new QGraphicsItemAnimation; upperLeftArmAnimation->setItem(upperLeftArmItem); upperLeftArmAnimation->setTimeLine(timeLine); upperLeftArmAnimation->setRotationAt(0, 190); upperLeftArmAnimation->setRotationAt(1, 180); QGraphicsItemAnimation *lowerLeftArmAnimation = new QGraphicsItemAnimation; lowerLeftArmAnimation->setItem(lowerLeftArmItem); lowerLeftArmAnimation->setTimeLine(timeLine); lowerLeftArmAnimation->setRotationAt(0, 50); lowerLeftArmAnimation->setRotationAt(1, 10); QGraphicsItemAnimation *upperRightArmAnimation = new QGraphicsItemAnimation; upperRightArmAnimation->setItem(upperRightArmItem); upperRightArmAnimation->setTimeLine(timeLine); upperRightArmAnimation->setRotationAt(0, 300); upperRightArmAnimation->setRotationAt(1, 310); QGraphicsItemAnimation *lowerRightArmAnimation = new QGraphicsItemAnimation; lowerRightArmAnimation->setItem(lowerRightArmItem); lowerRightArmAnimation->setTimeLine(timeLine); lowerRightArmAnimation->setRotationAt(0, 0); lowerRightArmAnimation->setRotationAt(1, -70); QGraphicsItemAnimation *upperLeftLegAnimation = new QGraphicsItemAnimation; upperLeftLegAnimation->setItem(upperLeftLegItem); upperLeftLegAnimation->setTimeLine(timeLine); upperLeftLegAnimation->setRotationAt(0, 150); upperLeftLegAnimation->setRotationAt(1, 80); QGraphicsItemAnimation *lowerLeftLegAnimation = new QGraphicsItemAnimation; lowerLeftLegAnimation->setItem(lowerLeftLegItem); lowerLeftLegAnimation->setTimeLine(timeLine); lowerLeftLegAnimation->setRotationAt(0, 70); lowerLeftLegAnimation->setRotationAt(1, 10); QGraphicsItemAnimation *upperRightLegAnimation = new QGraphicsItemAnimation; upperRightLegAnimation->setItem(upperRightLegItem); upperRightLegAnimation->setTimeLine(timeLine); upperRightLegAnimation->setRotationAt(0, 40); upperRightLegAnimation->setRotationAt(1, 120); QGraphicsItemAnimation *lowerRightLegAnimation = new QGraphicsItemAnimation; lowerRightLegAnimation->setItem(lowerRightLegItem); lowerRightLegAnimation->setTimeLine(timeLine); lowerRightLegAnimation->setRotationAt(0, 10); lowerRightLegAnimation->setRotationAt(1, 50); QGraphicsItemAnimation *torsoAnimation = new QGraphicsItemAnimation; torsoAnimation->setItem(torsoItem); torsoAnimation->setTimeLine(timeLine); torsoAnimation->setRotationAt(0, 5); torsoAnimation->setRotationAt(1, -20); timeLine->setUpdateInterval(1000 / 25); timeLine->setCurveShape(QTimeLine::SineCurve); timeLine->setLoopCount(0); timeLine->setDuration(2000); timeLine->start(); } Robot::~Robot() { delete timeLine; } QRectF Robot::boundingRect() const { return QRectF(); } void Robot::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) { Q_UNUSED(painter); Q_UNUSED(option); Q_UNUSED(widget); }</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>