Qwt User's Guide 6.1.0

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qwt_painter_command.h
1 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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_PAINTER_COMMAND_H
11 #define QWT_PAINTER_COMMAND_H
12
13 #include "qwt_global.h"
14 #include <qpaintengine.h>
15 #include <qpixmap.h>
16 #include <qimage.h>
17 #include <qpolygon.h>
18
19 class QPainterPath;
20
30 class QWT_EXPORT QwtPainterCommand
31 {
32 public:
34 enum Type
35 {
37 Invalid = -1,
38
40 Path,
41
43 Pixmap,
44
46 Image,
47
49 State
50 };
51
53 struct PixmapData
54 {
55 QRectF rect;
56 QPixmap pixmap;
57 QRectF subRect;
58 };
59
61 struct ImageData
62 {
63 QRectF rect;
64 QImage image;
65 QRectF subRect;
66 Qt::ImageConversionFlags flags;
67 };
68
70 struct StateData
71 {
72 QPaintEngine::DirtyFlags flags;
73
74 QPen pen;
75 QBrush brush;
76 QPointF brushOrigin;
77 QBrush backgroundBrush;
78 Qt::BGMode backgroundMode;
79 QFont font;
80 QMatrix matrix;
81 QTransform transform;
82
83 Qt::ClipOperation clipOperation;
84 QRegion clipRegion;
85 QPainterPath clipPath;
86 bool isClipEnabled;
87
88 QPainter::RenderHints renderHints;
89 QPainter::CompositionMode compositionMode;
90 qreal opacity;
91 };
92
93 QwtPainterCommand();
94 QwtPainterCommand(const QwtPainterCommand &);
95
96 QwtPainterCommand( const QPainterPath & );
97
98 QwtPainterCommand( const QRectF &rect,
99 const QPixmap &, const QRectF& subRect );
100
101 QwtPainterCommand( const QRectF &rect,
102 const QImage &, const QRectF& subRect,
103 Qt::ImageConversionFlags );
104
105 QwtPainterCommand( const QPaintEngineState & );
106
107 ~QwtPainterCommand();
108
109 QwtPainterCommand &operator=(const QwtPainterCommand & );
110
111 Type type() const;
112
113 QPainterPath *path();
114 const QPainterPath *path() const;
115
116 PixmapData* pixmapData();
117 const PixmapData* pixmapData() const;
118
119 ImageData* imageData();
120 const ImageData* imageData() const;
121
122 StateData* stateData();
123 const StateData* stateData() const;
124
125 private:
126 void copy( const QwtPainterCommand & );
127 void reset();
128
129 Type d_type;
130
131 union
132 {
133 QPainterPath *d_path;
134 PixmapData *d_pixmapData;
135 ImageData *d_imageData;
136 StateData *d_stateData;
137 };
138 };
139
141 inline QwtPainterCommand::Type QwtPainterCommand::type() const
142 {
143 return d_type;
144 }
145
147 inline const QPainterPath *QwtPainterCommand::path() const
148 {
149 return d_path;
150 }
151
153 inline const QwtPainterCommand::PixmapData*
154 QwtPainterCommand::pixmapData() const
155 {
156 return d_pixmapData;
157 }
158
160 inline const QwtPainterCommand::ImageData *
161 QwtPainterCommand::imageData() const
162 {
163 return d_imageData;
164 }
165
167 inline const QwtPainterCommand::StateData *
168 QwtPainterCommand::stateData() const
169 {
170 return d_stateData;
171 }
172
173 #endif