Qwt Polar User's Guide: qwt_polar_magnifier.h Source File

Qwt Polar User's Guide 1.1.1

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qwt_polar_magnifier.h
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_MAGNIFIER_H
10 #define QWT_POLAR_MAGNIFIER_H 1
11
12 #include "qwt_polar_global.h"
13 #include "qwt_magnifier.h"
14
15 class QwtPolarPlot;
16 class QwtPolarCanvas;
17
30 class QWT_POLAR_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 protected:
48 virtual void rescale( double factor );
49 void unzoom();
50
51 virtual void widgetKeyPressEvent( QKeyEvent * );
52
53 private:
54 class PrivateData;
55 PrivateData *d_data;
56 };
57
58 #endif
QwtPolarMagnifier
QwtPolarMagnifier provides zooming, by magnifying in steps.
Definition: qwt_polar_magnifier.h:30
QwtPolarCanvas
Canvas of a QwtPolarPlot.
Definition: qwt_polar_canvas.h:27
QwtPolarPlot
A plotting widget, displaying a polar coordinate system.
Definition: qwt_polar_plot.h:46