Qwt User's Guide  5.2.3
qwt_painter.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_H
11 #define QWT_PAINTER_H
12 
13 #include <qpoint.h>
14 #include <qrect.h>
15 #include <qpen.h>
16 #include "qwt_global.h"
17 #include "qwt_layout_metrics.h"
18 #include "qwt_polygon.h"
19 
20 class QPainter;
21 class QBrush;
22 class QColor;
23 class QWidget;
24 class QwtScaleMap;
25 class QwtColorMap;
26 class QwtDoubleInterval;
27 
28 #if QT_VERSION < 0x040000
29 class QColorGroup;
30 class QSimpleRichText;
31 #else
32 class QPalette;
33 class QTextDocument;
34 #endif
35 
36 #if defined(Q_WS_X11)
37 // Warning: QCOORD_MIN, QCOORD_MAX are wrong on X11.
38 #define QWT_COORD_MAX 16384
39 #define QWT_COORD_MIN (-QWT_COORD_MAX - 1)
40 #else
41 #define QWT_COORD_MAX 2147483647
42 #define QWT_COORD_MIN -QWT_COORD_MAX - 1
43 #endif
44 
63 class QWT_EXPORT QwtPainter
64 {
65 public:
66  static void setMetricsMap(const QPaintDevice *layout,
67  const QPaintDevice *device);
68  static void setMetricsMap(const QwtMetricsMap &);
69  static void resetMetricsMap();
70  static const QwtMetricsMap &metricsMap();
71 
72  static void setDeviceClipping(bool);
73  static bool deviceClipping();
74  static const QRect &deviceClipRect();
75 
76  static void setClipRect(QPainter *, const QRect &);
77 
78  static void drawText(QPainter *, int x, int y,
79  const QString &);
80  static void drawText(QPainter *, const QPoint &,
81  const QString &);
82  static void drawText(QPainter *, int x, int y, int w, int h,
83  int flags, const QString &);
84  static void drawText(QPainter *, const QRect &,
85  int flags, const QString &);
86 
87 #ifndef QT_NO_RICHTEXT
88 #if QT_VERSION < 0x040000
89  static void drawSimpleRichText(QPainter *, const QRect &,
90  int flags, QSimpleRichText &);
91 #else
92  static void drawSimpleRichText(QPainter *, const QRect &,
93  int flags, QTextDocument &);
94 #endif
95 #endif
96 
97  static void drawRect(QPainter *, int x, int y, int w, int h);
98  static void drawRect(QPainter *, const QRect &rect);
99  static void fillRect(QPainter *, const QRect &, const QBrush &);
100 
101  static void drawEllipse(QPainter *, const QRect &);
102  static void drawPie(QPainter *, const QRect & r, int a, int alen);
103 
104  static void drawLine(QPainter *, int x1, int y1, int x2, int y2);
105  static void drawLine(QPainter *, const QPoint &p1, const QPoint &p2);
106  static void drawPolygon(QPainter *, const QwtPolygon &pa);
107  static void drawPolyline(QPainter *, const QwtPolygon &pa);
108  static void drawPoint(QPainter *, int x, int y);
109 
110 #if QT_VERSION < 0x040000
111  static void drawRoundFrame(QPainter *, const QRect &,
112  int width, const QColorGroup &cg, bool sunken);
113 #else
114  static void drawRoundFrame(QPainter *, const QRect &,
115  int width, const QPalette &, bool sunken);
116 #endif
117  static void drawFocusRect(QPainter *, QWidget *);
118  static void drawFocusRect(QPainter *, QWidget *, const QRect &);
119 
120  static void drawColorBar(QPainter *painter,
121  const QwtColorMap &, const QwtDoubleInterval &,
122  const QwtScaleMap &, Qt::Orientation, const QRect &);
123 
124 #if QT_VERSION < 0x040000
125  static void setSVGMode(bool on);
126  static bool isSVGMode();
127 #endif
128 
129  static QPen scaledPen(const QPen &);
130 
131 private:
132  static void drawColoredArc(QPainter *, const QRect &,
133  int peak, int arc, int intervall, const QColor &c1, const QColor &c2);
134 
135  static bool d_deviceClipping;
136  static QwtMetricsMap d_metricsMap;
137 #if QT_VERSION < 0x040000
138  static bool d_SVGMode;
139 #endif
140 };
141 
143 inline void QwtPainter::drawLine(QPainter *painter,
144  const QPoint &p1, const QPoint &p2)
145 {
146  drawLine(painter, p1.x(), p1.y(), p2.x(), p2.y());
147 }
148 
154 inline bool QwtPainter::deviceClipping()
155 {
156  return d_deviceClipping;
157 }
158 
159 #endif
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