customproxy.h Example File

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#include <QTimeLine>
#include <QGraphicsProxyWidget>

class CustomProxy : public QGraphicsProxyWidget

    explicit CustomProxy(QGraphicsItem *parent = 0, Qt::WindowFlags wFlags = 0);

    QRectF boundingRect() const Q_DECL_OVERRIDE;
    void paintWindowFrame(QPainter *painter, const QStyleOptionGraphicsItem *option,
                          QWidget *widget) Q_DECL_OVERRIDE;

    void hoverEnterEvent(QGraphicsSceneHoverEvent *event) Q_DECL_OVERRIDE;
    void hoverLeaveEvent(QGraphicsSceneHoverEvent *event) Q_DECL_OVERRIDE;
    bool sceneEventFilter(QGraphicsItem *watched, QEvent *event) Q_DECL_OVERRIDE;
    QVariant itemChange(GraphicsItemChange change, const QVariant &value) Q_DECL_OVERRIDE;

private slots:
    void updateStep(qreal step);
    void stateChanged(QTimeLine::State);
    void zoomIn();
    void zoomOut();

    QTimeLine *timeLine;
    bool popupShown;
    QGraphicsItem *currentPopup;


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