source: ntrip/trunk/BNC/qwt/qwt_null_paintdevice.h@ 10230

Last change on this file since 10230 was 9383, checked in by stoecker, 4 years ago

update to qwt verion 6.1.1 to fix build with newer Qt5
File size: 3.3 KB
Line 
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_NULL_PAINT_DEVICE_H
11#define QWT_NULL_PAINT_DEVICE_H 1
12
13#include "qwt_global.h"
14#include <qpaintdevice.h>
15#include <qpaintengine.h>
16
17/*!
18 \brief A null paint device doing nothing
19
20 Sometimes important layout/rendering geometries are not
21 available or changeable from the public Qt class interface.
22 ( f.e hidden in the style implementation ).
23
24 QwtNullPaintDevice can be used to manipulate or filter out
25 this information by analyzing the stream of paint primitives.
26
27 F.e. QwtNullPaintDevice is used by QwtPlotCanvas to identify
28 styled backgrounds with rounded corners.
29*/
30
31class QWT_EXPORT QwtNullPaintDevice: public QPaintDevice
32{
33public:
34 /*!
35 \brief Render mode
36
37 \sa setMode(), mode()
38 */
39 enum Mode
40 {
41 /*!
42 All vector graphic primitives are painted by
43 the corresponding draw methods
44 */
45 NormalMode,
46
47 /*!
48 Vector graphic primitives ( beside polygons ) are mapped to a QPainterPath
49 and are painted by drawPath. In PathMode mode
50 only a few draw methods are called:
51
52 - drawPath()
53 - drawPixmap()
54 - drawImage()
55 - drawPolygon()
56 */
57 PolygonPathMode,
58
59 /*!
60 Vector graphic primitives are mapped to a QPainterPath
61 and are painted by drawPath. In PathMode mode
62 only a few draw methods are called:
63
64 - drawPath()
65 - drawPixmap()
66 - drawImage()
67 */
68 PathMode
69 };
70
71 QwtNullPaintDevice();
72 virtual ~QwtNullPaintDevice();
73
74 void setMode( Mode );
75 Mode mode() const;
76
77 virtual QPaintEngine *paintEngine() const;
78
79 virtual int metric( PaintDeviceMetric ) const;
80
81 virtual void drawRects(const QRect *, int );
82 virtual void drawRects(const QRectF *, int );
83
84 virtual void drawLines(const QLine *, int );
85 virtual void drawLines(const QLineF *, int );
86
87 virtual void drawEllipse(const QRectF &);
88 virtual void drawEllipse(const QRect &);
89
90 virtual void drawPath(const QPainterPath &);
91
92 virtual void drawPoints(const QPointF *, int );
93 virtual void drawPoints(const QPoint *, int );
94
95 virtual void drawPolygon(
96 const QPointF *, int , QPaintEngine::PolygonDrawMode );
97
98 virtual void drawPolygon(
99 const QPoint *, int , QPaintEngine::PolygonDrawMode );
100
101 virtual void drawPixmap(const QRectF &,
102 const QPixmap &, const QRectF &);
103
104 virtual void drawTextItem(const QPointF &, const QTextItem &);
105
106 virtual void drawTiledPixmap(const QRectF &,
107 const QPixmap &, const QPointF & );
108
109 virtual void drawImage(const QRectF &,
110 const QImage &, const QRectF &, Qt::ImageConversionFlags );
111
112 virtual void updateState( const QPaintEngineState & );
113
114protected:
115 //! \return Size needed to implement metric()
116 virtual QSize sizeMetrics() const = 0;
117
118private:
119 class PaintEngine;
120 PaintEngine *d_engine;
121
122 class PrivateData;
123 PrivateData *d_data;
124};
125
126#endif
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