qwt_plot_picker.h

/******************************************************************************
 * Qwt Widget Library
 * Copyright (C) 2024   ChenZongYan <czy.t@163.com>
 *****************************************************************************/
 
#ifndef QWT_PLOT_PICKER_H
#define QWT_PLOT_PICKER_H
 
#include "qwt_global.h"
#include "qwt_picker.h"
#include "qwt_axis_id.h"
 
class QwtPlot;
class QPointF;
class QRectF;
 
#if QT_VERSION < 0x060000
template< typename T >
class QVector;
#endif
 
class QWT_EXPORT QwtPlotPicker : public QwtPicker
{
    Q_OBJECT
 
public:
    explicit QwtPlotPicker(QWidget* canvas);
    virtual ~QwtPlotPicker();
 
    explicit QwtPlotPicker(QwtAxisId xAxisId, QwtAxisId yAxisId, QWidget*);
 
    explicit QwtPlotPicker(QwtAxisId xAxisId, QwtAxisId yAxisId, RubberBand rubberBand, DisplayMode trackerMode, QWidget*);
 
    virtual void setAxes(QwtAxisId xAxisId, QwtAxisId yAxisId);
 
    QwtAxisId xAxis() const;
    QwtAxisId yAxis() const;
 
    QwtPlot* plot();
    const QwtPlot* plot() const;
 
    QWidget* canvas();
    const QWidget* canvas() const;
Q_SIGNALS:
 
    void selected(const QPointF& pos);
 
    void selected(const QRectF& rect);
 
    void selected(const QVector< QPointF >& pa);
 
    void appended(const QPointF& pos);
 
    void moved(const QPointF& pos);
 
protected:
    QRectF scaleRect() const;
 
    QRectF invTransform(const QRect&) const;
    QRect transform(const QRectF&) const;
 
    QPointF invTransform(const QPoint&) const;
    QPoint transform(const QPointF&) const;
 
    virtual QwtText trackerText(const QPoint&) const QWT_OVERRIDE;
    virtual QwtText trackerTextF(const QPointF&) const;
 
    virtual void move(const QPoint&) QWT_OVERRIDE;
    virtual void append(const QPoint&) QWT_OVERRIDE;
    virtual bool end(bool ok = true) QWT_OVERRIDE;
 
private:
    class PrivateData;
    PrivateData* m_data;
};
 
#endif