source: ntrip/branches/BNC_2.12/qwtpolar/qwt_polar_picker.h@ 8142

Last change on this file since 8142 was 4272, checked in by mervart, 10 years ago
File size: 2.4 KB
Line 
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
17class QwtPolarPlot;
18class QwtPolarCanvas;
19class QwtPointPolar;
20
21/*!
22 \brief QwtPolarPicker provides selections on a plot canvas
23
24 QwtPolarPicker is a QwtPicker tailored for selections on
25 a polar plot canvas.
26*/
27
28class QWT_POLAR_EXPORT QwtPolarPicker: public QwtPicker
29{
30 Q_OBJECT
31
32public:
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
48Q_SIGNALS:
49
50 /*!
51 A signal emitted in case of selectionFlags() & PointSelection.
52 \param pos Selected point
53 */
54 void selected( const QwtPointPolar &pos );
55
56 /*!
57 A signal emitting the selected points,
58 at the end of a selection.
59
60 \param points Selected points
61 */
62 void selected( const QVector<QwtPointPolar> &points );
63
64 /*!
65 A signal emitted when a point has been appended to the selection
66
67 \param pos Position of the appended point.
68 \sa append(). moved()
69 */
70 void appended( const QwtPointPolar &pos );
71
72 /*!
73 A signal emitted whenever the last appended point of the
74 selection has been moved.
75
76 \param pos Position of the moved last point of the selection.
77 \sa move(), appended()
78 */
79 void moved( const QwtPointPolar &pos );
80
81protected:
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
91private:
92 virtual QPainterPath pickArea() const;
93
94 class PrivateData;
95 PrivateData *d_data;
96};
97
98#endif
Note: See TracBrowser for help on using the repository browser.