source: ntrip/branches/BNC_2.12/qwt/qwt_plot_picker.h@ 7886

Last change on this file since 7886 was 4271, checked in by mervart, 12 years ago
File size: 2.8 KB
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1/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
2 * Qwt Widget Library
3 * Copyright (C) 1997 Josef Wilgen
4 * Copyright (C) 2002 Uwe Rathmann
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the Qwt License, Version 1.0
8 *****************************************************************************/
9
10#ifndef QWT_PLOT_PICKER_H
11#define QWT_PLOT_PICKER_H
12
13#include "qwt_global.h"
14#include "qwt_plot_canvas.h"
15#include "qwt_picker.h"
16#include <qvector.h>
17
18class QwtPlot;
19
20/*!
21 \brief QwtPlotPicker provides selections on a plot canvas
22
23 QwtPlotPicker is a QwtPicker tailored for selections on
24 a plot canvas. It is set to a x-Axis and y-Axis and
25 translates all pixel coordinates into this coodinate system.
26*/
27
28class QWT_EXPORT QwtPlotPicker: public QwtPicker
29{
30 Q_OBJECT
31
32public:
33 explicit QwtPlotPicker( QwtPlotCanvas * );
34 virtual ~QwtPlotPicker();
35
36 explicit QwtPlotPicker( int xAxis, int yAxis, QwtPlotCanvas * );
37
38 explicit QwtPlotPicker( int xAxis, int yAxis,
39 RubberBand rubberBand, DisplayMode trackerMode,
40 QwtPlotCanvas * );
41
42 virtual void setAxis( int xAxis, int yAxis );
43
44 int xAxis() const;
45 int yAxis() const;
46
47 QwtPlot *plot();
48 const QwtPlot *plot() const;
49
50 QwtPlotCanvas *canvas();
51 const QwtPlotCanvas *canvas() const;
52
53Q_SIGNALS:
54
55 /*!
56 A signal emitted in case of selectionFlags() & PointSelection.
57 \param pos Selected point
58 */
59 void selected( const QPointF &pos );
60
61 /*!
62 A signal emitted in case of selectionFlags() & RectSelection.
63 \param rect Selected rectangle
64 */
65 void selected( const QRectF &rect );
66
67 /*!
68 A signal emitting the selected points,
69 at the end of a selection.
70
71 \param pa Selected points
72 */
73 void selected( const QVector<QPointF> &pa );
74
75 /*!
76 A signal emitted when a point has been appended to the selection
77
78 \param pos Position of the appended point.
79 \sa append(). moved()
80 */
81 void appended( const QPointF &pos );
82
83 /*!
84 A signal emitted whenever the last appended point of the
85 selection has been moved.
86
87 \param pos Position of the moved last point of the selection.
88 \sa move(), appended()
89 */
90 void moved( const QPointF &pos );
91
92protected:
93 QRectF scaleRect() const;
94
95 QRectF invTransform( const QRect & ) const;
96 QRect transform( const QRectF & ) const;
97
98 QPointF invTransform( const QPoint & ) const;
99 QPoint transform( const QPointF & ) const;
100
101 virtual QwtText trackerText( const QPoint & ) const;
102 virtual QwtText trackerTextF( const QPointF & ) const;
103
104 virtual void move( const QPoint & );
105 virtual void append( const QPoint & );
106 virtual bool end( bool ok = true );
107
108private:
109 int d_xAxis;
110 int d_yAxis;
111};
112
113#endif
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