Qt 4.3: animateditem.h Example File (graphicsview/portedasteroids/animateditem.h)

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

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     #ifndef ANIMATEDPIXMAPITEM_H
     #define ANIMATEDPIXMAPITEM_H

     #include <QGraphicsItem>

     class AnimatedPixmapItem : public QGraphicsItem
     {
     public:
         AnimatedPixmapItem(const QList<QPixmap> &animation, QGraphicsScene *scene = 0);

         void setFrame(int frame);
         inline int frame() const
         { return currentFrame; }
         inline int frameCount() const
         { return frames.size(); }
         inline QPixmap image(int frame) const
         { return frames.isEmpty() ? QPixmap() : frames.at(frame % frames.size()).pixmap; }
         inline void setVelocity(qreal xvel, qreal yvel)
         { vx = xvel; vy = yvel; }
         inline qreal xVelocity() const
         { return vx; }
         inline qreal yVelocity() const
         { return vy; }

         QRectF boundingRect() const;
         QPainterPath shape() const;
         void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);

         void advance(int phase);

     private:
         struct Frame {
             QPixmap pixmap;
             QPainterPath shape;
             QRectF boundingRect;
         };

         int currentFrame;
         QList<Frame> frames;
         qreal vx, vy;
     };

     #endif