#ifndef MYVIEW_H
#define MYVIEW_H

#include <qtimer.h>
#include <qpainter.h>
#include <QGraphicsView>
#include <QWheelEvent>
#include <QKeyEvent>
#include <QPoint>
#include <QPointF>
#include <QGraphicsItem>
#include <QKeyEvent>

#include <QGestureEvent>
#include <QPinchGesture>

class MyView : public QGraphicsView
{
    Q_OBJECT

public:
    explicit MyView(QWidget *parent =0);
    qreal x, y, beishu;

    void zoomone();
protected:
    void wheelEvent(QWheelEvent *event) Q_DECL_OVERRIDE;
    void mouseMoveEvent(QMouseEvent *event) Q_DECL_OVERRIDE;
    void mousePressEvent(QMouseEvent *event) Q_DECL_OVERRIDE;
    void mouseReleaseEvent(QMouseEvent *event) Q_DECL_OVERRIDE;
    void mouseDoubleClickEvent(QMouseEvent *event) Q_DECL_OVERRIDE;

    bool event(QEvent *event) Q_DECL_OVERRIDE;
public Q_SLOTS:
    void zoomIn();  // 放大
    void zoomOut();  // 缩小

signals:
    void dbclickxy(double x,double y);
    void beishuchange(double beishu);

private:
    bool bottonstatus = false;
    QPoint myview_lastMousePos;

private:
    bool gestureEvent(QGestureEvent *event);
    void pinchTriggered(QPinchGesture*);

    bool mbInPinch = false;


};

#endif // MYVIEW_H