#ifndef MYGRAPHICSVIEW_H
#define MYGRAPHICSVIEW_H

#include <QObject>
#include <QGraphicsView>
#include <QMouseEvent>
#include <QWheelEvent>
#include <QScrollBar>
#include <QGestureEvent>
#include <QPinchGesture>
#include "mygraphicsscene.h"

#define GRIDSIZE1 1   //一个格子代表1毫米
#define GRIDSIZE254 25.4   //一个格子代表25.4毫米
#define SCENESIZE 800.0

///
/// \brief The MyGraphicsView class  视图层
///
class MyGraphicsView : public QGraphicsView
{
    Q_OBJECT
public:
    explicit MyGraphicsView(QWidget *parent = NULL,double gridUnit = 0.0);
    ~MyGraphicsView();

private:
    MyGraphicsScene *m_scene;
    //鼠标左键按下点
    QPoint m_leftPressPoint;
    //鼠标左键抬起点
    QPoint m_leftReleasePoint;

protected:
    void resizeEvent(QResizeEvent *event);//窗口大小发生变化的时候，该函数触发
    void mouseDoubleClickEvent(QMouseEvent *event);
    void mousePressEvent(QMouseEvent *event) override;
    void mouseReleaseEvent(QMouseEvent *event);
    void mouseMoveEvent(QMouseEvent *event);
    void wheelEvent(QWheelEvent *event);
    void showEvent(QShowEvent *event) override;

public:
    void swithViewByPic(QPicture pic);
    void creatViewByData(QByteArray ary);
    void creatViewByList(QList<drawItem> list);
    void setRangeXY(s32 maxX,s32 minX,s32 maxY,s32 minY);
    void enlargeView();
    void narrowView();
    void forwardAndBackward(int idx);
    int getItemNums();
    void moveScene(int x,int y);//移动场景
    void autoView();//自动调整大小
    void insertPoint(int dir);
    void removeSelectPoint();//删除选中点  默认删除最后一个点
    void setShapeType(int type);
    QList<QGraphicsEllipseItem *> getPointList();
    void cleanView();
    void setAdsorption(bool adsorption);
    void setMaxSegmentLength(int value);
    int getMaxSegmentLength();
    void setXYMove(double valX,double valY);
    void revokeLastItem();//撤销最后一个图元
    QList<GLineItem> getLineItemList();
    QList<GPathItem> getPathItemList();
    void restoreView();

signals:
    void siCurrentIndex(int idx);

public slots:
};

#endif // MYGRAPHICSVIEW_H