qwt_plot_picker.h

/******************************************************************************
 * Qwt Widget Library
 * Copyright (C) 1997   Josef Wilgen
 * Copyright (C) 2002   Uwe Rathmann
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the Qwt License, Version 1.0
 *****************************************************************************/
 
#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