Qwt Polar User's Guide 1.1.1

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qwt_polar_picker.h
1 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
2 * QwtPolar Widget Library
3 * Copyright (C) 2008 Uwe Rathmann
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the Qwt License, Version 1.0
7 *****************************************************************************/
8
9 #ifndef QWT_POLAR_PICKER_H
10 #define QWT_POLAR_PICKER_H
11
12 #include "qwt_polar_global.h"
13 #include "qwt_picker.h"
14 #include <qvector.h>
15 #include <qpainterpath.h>
16
17 class QwtPolarPlot;
18 class QwtPolarCanvas;
19 class QwtPointPolar;
20
28 class QWT_POLAR_EXPORT QwtPolarPicker: public QwtPicker
29 {
30 Q_OBJECT
31
32 public:
33 explicit QwtPolarPicker( QwtPolarCanvas * );
34 virtual ~QwtPolarPicker();
35
36 explicit QwtPolarPicker(
37 RubberBand rubberBand, DisplayMode trackerMode,
38 QwtPolarCanvas * );
39
40 QwtPolarPlot *plot();
41 const QwtPolarPlot *plot() const;
42
43 QwtPolarCanvas *canvas();
44 const QwtPolarCanvas *canvas() const;
45
46 virtual QRect pickRect() const;
47
48 Q_SIGNALS:
49
54 void selected( const QwtPointPolar &pos );
55
62 void selected( const QVector<QwtPointPolar> &points );
63
70 void appended( const QwtPointPolar &pos );
71
79 void moved( const QwtPointPolar &pos );
80
81 protected:
82 QwtPointPolar invTransform( const QPoint & ) const;
83
84 virtual QwtText trackerText( const QPoint & ) const;
85 virtual QwtText trackerTextPolar( const QwtPointPolar & ) const;
86
87 virtual void move( const QPoint & );
88 virtual void append( const QPoint & );
89 virtual bool end( bool ok = true );
90
91 private:
92 virtual QPainterPath pickArea() const;
93
94 class PrivateData;
95 PrivateData *d_data;
96 };
97
98 #endif
QwtPolarCanvas
Canvas of a QwtPolarPlot.
Definition: qwt_polar_canvas.h:27
QwtPolarPicker
QwtPolarPicker provides selections on a plot canvas.
Definition: qwt_polar_picker.h:28
QwtPolarPlot
A plotting widget, displaying a polar coordinate system.
Definition: qwt_polar_plot.h:46