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

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

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

private:
    void updateHandles() override;

    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