DAGraphicsDrawRectSceneAction.h

#ifndef DAGRAPHICSDRAWRECTSCENEACTION_H
#define DAGRAPHICSDRAWRECTSCENEACTION_H
#include "DAGraphicsViewGlobal.h"
#include "DAAbstractGraphicsSceneAction.h"
namespace DA
{
class DAGraphicsRubberBandItem;
class DAGRAPHICSVIEW_API DAGraphicsDrawRectSceneAction : public DAAbstractGraphicsSceneAction
{
public:
    DAGraphicsDrawRectSceneAction(DAGraphicsScene* sc);
    virtual ~DAGraphicsDrawRectSceneAction();
 
protected:
    // 开始激活，这是使用setAction后调用的函数
    virtual void beginActive();
    // 鼠标点击事件,返回true，代表action劫持了此事件，不会在scene中继续传递事件,默认返回false
    virtual bool mousePressEvent(QGraphicsSceneMouseEvent* mouseEvent);
    // 鼠标释放
    virtual bool mouseReleaseEvent(QGraphicsSceneMouseEvent* mouseEvent);
    // 鼠标移动事件,返回true，代表action劫持了此事件，不会在scene中继续传递事件,默认返回false
    virtual bool mouseMoveEvent(QGraphicsSceneMouseEvent* mouseEvent);
 
private:
    QPointF mStartPoint;
    bool mIsStarted { false };
    std::unique_ptr< DAGraphicsRubberBandItem > mRubberBand;
};
}  // end namespace DA
#endif  // DAGRAPHICSDRAWRECTSCENEACTION_H