Qwt User's Guide  6.2.0
qwt_polar_picker.h
1 /******************************************************************************
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_global.h"
13 #include "qwt_picker.h"
14 
15 #include <qvector.h>
16 #include <qpainterpath.h>
17 
18 class QwtPolarPlot;
19 class QwtPolarCanvas;
20 class QwtPointPolar;
21 
28 class QWT_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 QWT_OVERRIDE;
85  virtual QwtText trackerTextPolar( const QwtPointPolar& ) const;
86 
87  virtual void move( const QPoint& ) QWT_OVERRIDE;
88  virtual void append( const QPoint& ) QWT_OVERRIDE;
89  virtual bool end( bool ok = true ) QWT_OVERRIDE;
90 
91  private:
92  virtual QPainterPath pickArea() const QWT_OVERRIDE;
93 
94  class PrivateData;
95  PrivateData* m_data;
96 };
97 
98 #endif
QwtPicker provides selections on a widget.
Definition: qwt_picker.h:104
DisplayMode
Display mode.
Definition: qwt_picker.h:162
virtual void move(const QPoint &)
virtual void append(const QPoint &)
virtual QwtText trackerText(const QPoint &pos) const
Return the label for a position.
Definition: qwt_picker.cpp:490
virtual bool end(bool ok=true)
Close a selection setting the state to inactive.
A point in polar coordinates.
Canvas of a QwtPolarPlot.
QwtPolarPicker provides selections on a plot canvas.
void selected(const QwtPointPolar &pos)
void moved(const QwtPointPolar &pos)
void appended(const QwtPointPolar &pos)
void selected(const QVector< QwtPointPolar > &points)
A plotting widget, displaying a polar coordinate system.
A class representing a text.
Definition: qwt_text.h:52