112 lines
2.7 KiB
C
112 lines
2.7 KiB
C
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/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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* Qwt Widget Library
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* Copyright (C) 1997 Josef Wilgen
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* Copyright (C) 2002 Uwe Rathmann
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the Qwt License, Version 1.0
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*****************************************************************************/
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#ifndef QWT_PLOT_PICKER_H
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#define QWT_PLOT_PICKER_H
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#include "qwt_global.h"
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#include "qwt_picker.h"
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#include <qvector.h>
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class QwtPlot;
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/*!
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\brief QwtPlotPicker provides selections on a plot canvas
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QwtPlotPicker is a QwtPicker tailored for selections on
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a plot canvas. It is set to a x-Axis and y-Axis and
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translates all pixel coordinates into this coordinate system.
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*/
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class QWT_EXPORT QwtPlotPicker: public QwtPicker
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{
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Q_OBJECT
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public:
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explicit QwtPlotPicker( QWidget *canvas );
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virtual ~QwtPlotPicker();
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explicit QwtPlotPicker( int xAxis, int yAxis, QWidget * );
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explicit QwtPlotPicker( int xAxis, int yAxis,
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RubberBand rubberBand, DisplayMode trackerMode, QWidget * );
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virtual void setAxis( int xAxis, int yAxis );
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int xAxis() const;
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int yAxis() const;
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QwtPlot *plot();
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const QwtPlot *plot() const;
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QWidget *canvas();
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const QWidget *canvas() const;
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Q_SIGNALS:
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/*!
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A signal emitted in case of QwtPickerMachine::PointSelection.
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\param pos Selected point
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*/
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void selected( const QPointF &pos );
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/*!
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A signal emitted in case of QwtPickerMachine::RectSelection.
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\param rect Selected rectangle
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*/
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void selected( const QRectF &rect );
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/*!
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A signal emitting the selected points,
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at the end of a selection.
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\param pa Selected points
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*/
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void selected( const QVector<QPointF> &pa );
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/*!
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A signal emitted when a point has been appended to the selection
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\param pos Position of the appended point.
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\sa append(). moved()
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*/
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void appended( const QPointF &pos );
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/*!
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A signal emitted whenever the last appended point of the
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selection has been moved.
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\param pos Position of the moved last point of the selection.
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\sa move(), appended()
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*/
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void moved( const QPointF &pos );
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protected:
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QRectF scaleRect() const;
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QRectF invTransform( const QRect & ) const;
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QRect transform( const QRectF & ) const;
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QPointF invTransform( const QPoint & ) const;
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QPoint transform( const QPointF & ) const;
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virtual QwtText trackerText( const QPoint & ) const;
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virtual QwtText trackerTextF( const QPointF & ) const;
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virtual void move( const QPoint & );
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virtual void append( const QPoint & );
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virtual bool end( bool ok = true );
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private:
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int d_xAxis;
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int d_yAxis;
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};
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#endif
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