source: ntrip/trunk/BNC/qwt/qwt_null_paintdevice.h@ 10590

Last change on this file since 10590 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
RevLine 
[4271]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
[9383]20 Sometimes important layout/rendering geometries are not
21 available or changeable from the public Qt class interface.
[4271]22 ( f.e hidden in the style implementation ).
23
[9383]24 QwtNullPaintDevice can be used to manipulate or filter out
[8127]25 this information by analyzing the stream of paint primitives.
[4271]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:
[8127]34 /*!
35 \brief Render mode
[4271]36
[8127]37 \sa setMode(), mode()
38 */
39 enum Mode
40 {
41 /*!
42 All vector graphic primitives are painted by
43 the corresponding draw methods
44 */
[9383]45 NormalMode,
[8127]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();
[4271]72 virtual ~QwtNullPaintDevice();
73
[8127]74 void setMode( Mode );
75 Mode mode() const;
[4271]76
77 virtual QPaintEngine *paintEngine() const;
[8127]78
[9383]79 virtual int metric( PaintDeviceMetric ) const;
[4271]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 &,
[9383]107 const QPixmap &, const QPointF & );
[4271]108
109 virtual void drawImage(const QRectF &,
110 const QImage &, const QRectF &, Qt::ImageConversionFlags );
111
[9383]112 virtual void updateState( const QPaintEngineState & );
[4271]113
[8127]114protected:
115 //! \return Size needed to implement metric()
116 virtual QSize sizeMetrics() const = 0;
117
[4271]118private:
119 class PaintEngine;
120 PaintEngine *d_engine;
121
122 class PrivateData;
123 PrivateData *d_data;
124};
125
126#endif
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