Qwt User's Guide 6.2.0

qwt_plot_canvas.h
1 /******************************************************************************
2 * Qwt Widget Library
3 * Copyright (C) 1997 Josef Wilgen
4 * Copyright (C) 2002 Uwe Rathmann
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the Qwt License, Version 1.0
8 *****************************************************************************/
9
10 #ifndef QWT_PLOT_CANVAS_H
11 #define QWT_PLOT_CANVAS_H
12
13 #include "qwt_global.h"
14 #include "qwt_plot_abstract_canvas.h"
15
16 #include <qframe.h>
17
18 class QwtPlot;
19 class QPixmap;
20 class QPainterPath;
21
29 class QWT_EXPORT QwtPlotCanvas : public QFrame, public QwtPlotAbstractCanvas
30 {
31 Q_OBJECT
32
33 Q_PROPERTY( double borderRadius READ borderRadius WRITE setBorderRadius )
34
35 public:
36
44 enum PaintAttribute
45 {
57 BackingStore = 1,
58
74 Opaque = 2,
75
91 HackStyledBackground = 4,
92
99 ImmediatePaint = 8
100 };
101
102 Q_DECLARE_FLAGS( PaintAttributes, PaintAttribute )
103
104 explicit QwtPlotCanvas( QwtPlot* = NULL );
105 virtual ~QwtPlotCanvas();
106
107 void setPaintAttribute( PaintAttribute, bool on = true );
108 bool testPaintAttribute( PaintAttribute ) const;
109
110 const QPixmap* backingStore() const;
111 Q_INVOKABLE void invalidateBackingStore();
112
113 virtual bool event( QEvent* ) QWT_OVERRIDE;
114
115 Q_INVOKABLE QPainterPath borderPath( const QRect& ) const;
116
117 public Q_SLOTS:
118 void replot();
119
120 protected:
121 virtual void paintEvent( QPaintEvent* ) QWT_OVERRIDE;
122 virtual void resizeEvent( QResizeEvent* ) QWT_OVERRIDE;
123
124 virtual void drawBorder( QPainter* ) QWT_OVERRIDE;
125
126 private:
127 class PrivateData;
128 PrivateData* m_data;
129 };
130
131 Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotCanvas::PaintAttributes )
132
133 #endif
QwtPlotAbstractCanvas
Base class for all type of plot canvases.
Definition: qwt_plot_abstract_canvas.h:22
QwtPlotAbstractCanvas::drawBorder
virtual void drawBorder(QPainter *)
Definition: qwt_plot_abstract_canvas.cpp:628
QwtPlotCanvas
Canvas of a QwtPlot.
Definition: qwt_plot_canvas.h:30
QwtPlotCanvas::PaintAttributes
QFlags< PaintAttribute > PaintAttributes
Definition: qwt_plot_canvas.h:102
QwtPlotCanvas::PaintAttribute
PaintAttribute
Paint attributes.
Definition: qwt_plot_canvas.h:45
QwtPlot
A 2-D plotting widget.
Definition: qwt_plot.h:79