HMI/include/graphicsItem/graphicsPolygonItem.h

#ifndef GRAPHICSPOLYGONITEM_H
#define GRAPHICSPOLYGONITEM_H

#include "graphicsBaseItem.h"

class GraphicPolygonItem : public GraphicsBaseItem
{
    Q_OBJECT

public:
    GraphicPolygonItem(QGraphicsItem *parent = 0);
    virtual ~GraphicPolygonItem();

    void resize(int,double, double, const QPointF&);
    void updateCoordinate();
    void move(const QPointF&);
    QJsonObject serialize() const override;
    static QGraphicsItem *createFromJson(const QJsonObject &obj);
    void editShape(int, const QPointF&);

    void addPoint(const QPointF&);
    bool endDrawing();
    QPolygonF getPoints(void) { return m_points; }

protected:
    virtual QPainterPath shape();
    virtual QRectF boundingRect();
    virtual void paint(QPainter*, const QStyleOptionGraphicsItem*, QWidget*);

private:
    virtual void updateHandles();

    QPolygonF   m_lastPoints; //记录上一时刻的点集数据，用于缩放等操作
    QPolygonF   m_points;
};

#endif