Qwt User's Guide  6.2.0
qwt_polar_magnifier.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_MAGNIFIER_H
10 #define QWT_POLAR_MAGNIFIER_H
11 
12 #include "qwt_global.h"
13 #include "qwt_magnifier.h"
14 
15 class QwtPolarPlot;
16 class QwtPolarCanvas;
17 
30 class QWT_EXPORT QwtPolarMagnifier : public QwtMagnifier
31 {
32  Q_OBJECT
33 
34  public:
35  explicit QwtPolarMagnifier( QwtPolarCanvas* );
36  virtual ~QwtPolarMagnifier();
37 
38  void setUnzoomKey( int key, int modifiers );
39  void getUnzoomKey( int& key, int& modifiers ) const;
40 
41  QwtPolarPlot* plot();
42  const QwtPolarPlot* plot() const;
43 
44  QwtPolarCanvas* canvas();
45  const QwtPolarCanvas* canvas() const;
46 
47  public Q_SLOTS:
48  virtual void rescale( double factor ) QWT_OVERRIDE;
49  void unzoom();
50 
51  protected:
52  virtual void widgetKeyPressEvent( QKeyEvent* ) QWT_OVERRIDE;
53 
54  private:
55  class PrivateData;
56  PrivateData* m_data;
57 };
58 
59 #endif
QwtMagnifier provides zooming, by magnifying in steps.
Definition: qwt_magnifier.h:28
virtual void widgetKeyPressEvent(QKeyEvent *)
virtual void rescale(double factor)=0
Canvas of a QwtPolarPlot.
QwtPolarMagnifier provides zooming, by magnifying in steps.
A plotting widget, displaying a polar coordinate system.