+ void setXLimits(qreal min, qreal max);
+
+public slots:
+ void sceneRectChanged(const QRectF &);
+
+protected:
+ void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
+ void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
+ void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
+ void mousePressEvent(QGraphicsSceneMouseEvent *event);
+ void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);