Qt 4.2: animateditem.cpp Example File (graphicsview/portedasteroids/animateditem.cpp)

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

     /****************************************************************************
     **
     ** Copyright (C) 2006-2006 Trolltech ASA. All rights reserved.
     **
     ** This file is part of the example classes of the Qt Toolkit.
     **
     ** This file may be used under the terms of the GNU General Public
     ** License version 2.0 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.trolltech.com/products/qt/opensource.html
     **
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     ** review the following information:
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     ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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     ****************************************************************************/

     #include "animateditem.h"

     AnimatedPixmapItem::AnimatedPixmapItem(const QList<QPixmap> &animation,
                                            QGraphicsScene *scene)
         : QGraphicsPixmapItem(0, scene), currentFrame(0), frames(animation), vx(0), vy(0)
     {
     }

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

     void AnimatedPixmapItem::advance(int phase)
     {
         if (phase == 1 && !frames.isEmpty()) {
             currentFrame = (currentFrame + 1) % frames.size();
             setPixmap(frames.at(currentFrame));
             if (vx || vy)
                 moveBy(vx, vy);
         }
     }

     QPainterPath AnimatedPixmapItem::shape() const
     {
         QPainterPath path;
         path.addRect(0, 0,
                      frames.at(currentFrame).width(),
                      frames.at(currentFrame).height());
         return path;
     }