qwt_plot_picker.h

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/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
 * 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"

class QwtPlot;
class QPointF;
class QRectF;
template <typename T> class QVector;

class QWT_EXPORT QwtPlotPicker: public QwtPicker
{
    Q_OBJECT

public:
    explicit QwtPlotPicker( QWidget *canvas );
    virtual ~QwtPlotPicker();

    explicit QwtPlotPicker( int xAxis, int yAxis, QWidget * );

    explicit QwtPlotPicker( int xAxis, int yAxis,
        RubberBand rubberBand, DisplayMode trackerMode, QWidget * );

    virtual void setAxis( int xAxis, int yAxis );

    int xAxis() const;
    int 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:
    int d_xAxis;
    int d_yAxis;
};

#endif