Home · All Namespaces · All Classes · Main Classes · Grouped Classes · Modules · Functions

animateditem.cpp Example File
graphicsview/portedasteroids/animateditem.cpp

 /****************************************************************************
 **
 ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
 ** Contact: Qt Software Information ([email protected])
 **
 ** This file is part of the example classes of the Qt Toolkit.
 **
 ** 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 General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License versions 2.0 or 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 GNU General Public Licensing requirements will be met:
 ** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
 ** http://www.gnu.org/copyleft/gpl.html.  In addition, as a special
 ** exception, Nokia gives you certain additional rights. These rights
 ** are described in the Nokia Qt GPL Exception version 1.3, included in
 ** the file GPL_EXCEPTION.txt in this package.
 **
 ** Qt for Windows(R) Licensees
 ** As a special exception, Nokia, as the sole copyright holder for Qt
 ** Designer, grants users of the Qt/Eclipse Integration plug-in the
 ** right for the Qt/Eclipse Integration to link to functionality
 ** provided by Qt Designer and its related libraries.
 **
 ** If you are unsure which license is appropriate for your use, please
 ** contact the sales department at [email protected].
 **
 ****************************************************************************/

 #include "animateditem.h"

 #include <QtGui/qbitmap.h>
 #include <QtGui/qpainter.h>

 AnimatedPixmapItem::AnimatedPixmapItem(const QList<QPixmap> &animation,
                                        QGraphicsScene *scene)
     : QGraphicsItem(0, scene), currentFrame(0), vx(0), vy(0)
 {
     for (int i = 0; i < animation.size(); ++i) {
         QPixmap pixmap = animation.at(i);
         Frame frame;
         frame.pixmap = pixmap;
         frame.shape = QPainterPath();
         frame.boundingRect = pixmap.rect();
         frames << frame;
     }
 }

 void AnimatedPixmapItem::setFrame(int frame)
 {
     if (!frames.isEmpty()) {
         prepareGeometryChange();
         currentFrame = frame % frames.size();
     }
 }

 void AnimatedPixmapItem::advance(int phase)
 {
     if (phase == 1)
         moveBy(vx, vy);
 }

 QRectF AnimatedPixmapItem::boundingRect() const
 {
     return frames.at(currentFrame).boundingRect;
 }

 QPainterPath AnimatedPixmapItem::shape() const
 {
     const Frame &f = frames.at(currentFrame);
     if (f.shape.isEmpty()) {
         QPainterPath path;
         path.addRegion(f.pixmap.createHeuristicMask());
         const_cast<Frame &>(f).shape = path;
     }
     return f.shape;
 }

 void AnimatedPixmapItem::paint(QPainter *painter, const QStyleOptionGraphicsItem * /*option*/,
                                QWidget * /*widget*/)
 {
     painter->drawPixmap(0, 0, frames.at(currentFrame).pixmap);
 }