demoitemanimation.h

奇趣公司比较新的qt/emd版本

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#ifndef DEMO_ITEM_ANIMATION_H
#define DEMO_ITEM_ANIMATION_H

#include <QtCore>
#include <QtGui>

class DemoItem;

class DemoItemAnimation : public QGraphicsItemAnimation
{
    Q_OBJECT
    
public:
    enum INOROUT {ANIM_IN, ANIM_OUT, ANIM_UNSPECIFIED};
    
    DemoItemAnimation(DemoItem *item, INOROUT inOrOut = ANIM_UNSPECIFIED);
    virtual ~DemoItemAnimation();
    
    virtual void play(bool fromStart = true, bool force = false);
    virtual void playReverse();
    virtual void stop(bool reset = true);
    virtual void setRepeat(int nr = 0);
    
    void setDuration(int duration);
    void setDuration(float duration){ setDuration(int(duration)); };
    void setOpacityAt0(qreal opacity);
    void setOpacityAt1(qreal opacity);
    void setOpacity(qreal step);
    void setCurrentTime(int ms);
    void setStartPos(const QPointF &pos);
    bool notOwnerOfItem();
    
    bool running();
    bool runningOrItemLocked();
    void lockItem(bool state);
    void prepare();
    
    DemoItem *demoItem();
    
    virtual void afterAnimationStep(qreal step); // overridden
    
    QTimeLine *timeline;
    qreal opacityAt0;
    qreal opacityAt1;
    int startDelay;
    QPointF startPos;
    bool hideOnFinished;
    bool moveOnPlay;
    bool forcePlay;
    bool fromStart;
    INOROUT inOrOut;

public slots:
    virtual void playWithoutDelay();
};

#endif // DEMO_ITEM_ANIMATION_H