Qwt User's Guide 6.2.0

qwt_polar_canvas.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_CANVAS_H
10 #define QWT_POLAR_CANVAS_H
11
12 #include "qwt_global.h"
13 #include "qwt_point_polar.h"
14 #include <qframe.h>
15
16 class QPainter;
17 class QwtPolarPlot;
18
27 class QWT_EXPORT QwtPolarCanvas : public QFrame
28 {
29 Q_OBJECT
30
31 public:
40 enum PaintAttribute
41 {
47 BackingStore = 0x01
48 };
49
50 Q_DECLARE_FLAGS( PaintAttributes, PaintAttribute )
51
52 explicit QwtPolarCanvas( QwtPolarPlot* );
53 virtual ~QwtPolarCanvas();
54
55 QwtPolarPlot* plot();
56 const QwtPolarPlot* plot() const;
57
58 void setPaintAttribute( PaintAttribute, bool on = true );
59 bool testPaintAttribute( PaintAttribute ) const;
60
61 const QPixmap* backingStore() const;
62 void invalidateBackingStore();
63
64 QwtPointPolar invTransform( const QPoint& ) const;
65 QPoint transform( const QwtPointPolar& ) const;
66
67 protected:
68 virtual void paintEvent( QPaintEvent* ) QWT_OVERRIDE;
69 virtual void resizeEvent( QResizeEvent* ) QWT_OVERRIDE;
70
71 private:
72 class PrivateData;
73 PrivateData* m_data;
74 };
75
76 Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPolarCanvas::PaintAttributes )
77
78 #endif
QwtPointPolar
A point in polar coordinates.
Definition: qwt_point_polar.h:29
QwtPolarCanvas
Canvas of a QwtPolarPlot.
Definition: qwt_polar_canvas.h:28
QwtPolarCanvas::PaintAttributes
QFlags< PaintAttribute > PaintAttributes
Definition: qwt_polar_canvas.h:50
QwtPolarCanvas::PaintAttribute
PaintAttribute
Paint attributes.
Definition: qwt_polar_canvas.h:41
QwtPolarPlot
A plotting widget, displaying a polar coordinate system.
Definition: qwt_polar_plot.h:47