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