chartview.h

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#ifndef CHARTVIEW_H
#define CHARTVIEW_H
 
#include <QtCharts>
#include <QtWidgets/QRubberBand>
 
QT_USE_NAMESPACE
 
 
class ChartView : public QChartView
 
{
public:
    ChartView(QChart *chart, QWidget *parent = 0);
 
 
protected:
    bool viewportEvent(QEvent *event);
    void mousePressEvent(QMouseEvent *event);
    void mouseMoveEvent(QMouseEvent *event);
    void mouseReleaseEvent(QMouseEvent *event);
    void keyPressEvent(QKeyEvent *event);
    void mouseDoubleClickEvent( QMouseEvent * e );
 
private:
    bool m_isTouching;
    QPointF m_lastMousePos;
};
 
#endif