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99 lines
2.4 KiB
C++
99 lines
2.4 KiB
C++
/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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* QwtPolar Widget Library
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* Copyright (C) 2008 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_POLAR_PICKER_H
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#define QWT_POLAR_PICKER_H
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#include "qwt_polar_global.h"
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#include "qwt_picker.h"
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#include <qvector.h>
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#include <qpainterpath.h>
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class QwtPolarPlot;
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class QwtPolarCanvas;
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class QwtPointPolar;
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/*!
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\brief QwtPolarPicker provides selections on a plot canvas
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QwtPolarPicker is a QwtPicker tailored for selections on
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a polar plot canvas.
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*/
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class QWT_POLAR_EXPORT QwtPolarPicker: public QwtPicker
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{
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Q_OBJECT
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public:
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explicit QwtPolarPicker( QwtPolarCanvas * );
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virtual ~QwtPolarPicker();
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explicit QwtPolarPicker(
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RubberBand rubberBand, DisplayMode trackerMode,
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QwtPolarCanvas * );
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QwtPolarPlot *plot();
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const QwtPolarPlot *plot() const;
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QwtPolarCanvas *canvas();
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const QwtPolarCanvas *canvas() const;
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virtual QRect pickRect() const;
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Q_SIGNALS:
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/*!
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A signal emitted in case of selectionFlags() & PointSelection.
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\param pos Selected point
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*/
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void selected( const QwtPointPolar &pos );
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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 points Selected points
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*/
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void selected( const QVector<QwtPointPolar> &points );
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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 QwtPointPolar &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 QwtPointPolar &pos );
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protected:
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QwtPointPolar invTransform( const QPoint & ) const;
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virtual QwtText trackerText( const QPoint & ) const;
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virtual QwtText trackerTextPolar( const QwtPointPolar & ) 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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virtual QPainterPath pickArea() const;
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class PrivateData;
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PrivateData *d_data;
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};
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#endif
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