Qwt User's Guide  6.1.6
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 "qwt_global.h"
14 
15 #include <qpoint.h>
16 #include <qrect.h>
17 #include <qpen.h>
18 #include <qline.h>
19 #include <qpalette.h>
20 
21 class QPainter;
22 class QBrush;
23 class QColor;
24 class QWidget;
25 class QPolygonF;
26 class QRectF;
27 class QImage;
28 class QPixmap;
29 class QwtScaleMap;
30 class QwtColorMap;
31 class QwtInterval;
32 
33 class QTextDocument;
34 class QPainterPath;
35 
39 class QWT_EXPORT QwtPainter
40 {
41 public:
42  static void setPolylineSplitting( bool );
43  static bool polylineSplitting();
44 
45  static void setRoundingAlignment( bool );
46  static bool roundingAlignment();
47  static bool roundingAlignment(QPainter *);
48 
49  static void drawText( QPainter *, double x, double y, const QString & );
50  static void drawText( QPainter *, const QPointF &, const QString & );
51  static void drawText( QPainter *, double x, double y, double w, double h,
52  int flags, const QString & );
53  static void drawText( QPainter *, const QRectF &,
54  int flags, const QString & );
55 
56 #ifndef QT_NO_RICHTEXT
57  static void drawSimpleRichText( QPainter *, const QRectF &,
58  int flags, const QTextDocument & );
59 #endif
60 
61  static void drawRect( QPainter *, double x, double y, double w, double h );
62  static void drawRect( QPainter *, const QRectF &rect );
63  static void fillRect( QPainter *, const QRectF &, const QBrush & );
64 
65  static void drawEllipse( QPainter *, const QRectF & );
66  static void drawPie( QPainter *, const QRectF &, int a, int alen );
67 
68  static void drawLine( QPainter *, double x1, double y1, double x2, double y2 );
69  static void drawLine( QPainter *, const QPointF &p1, const QPointF &p2 );
70  static void drawLine( QPainter *, const QLineF & );
71 
72  static void drawPolygon( QPainter *, const QPolygonF & );
73  static void drawPolyline( QPainter *, const QPolygonF & );
74  static void drawPolyline( QPainter *, const QPointF *, int pointCount );
75 
76  static void drawPolygon( QPainter *, const QPolygon & );
77  static void drawPolyline( QPainter *, const QPolygon & );
78  static void drawPolyline( QPainter *, const QPoint *, int pointCount );
79 
80  static void drawPoint( QPainter *, const QPoint & );
81  static void drawPoints( QPainter *, const QPolygon & );
82  static void drawPoints( QPainter *, const QPoint *, int pointCount );
83 
84  static void drawPoint( QPainter *, double x, double y );
85  static void drawPoint( QPainter *, const QPointF & );
86  static void drawPoints( QPainter *, const QPolygonF & );
87  static void drawPoints( QPainter *, const QPointF *, int pointCount );
88 
89  static void drawPath( QPainter *, const QPainterPath & );
90  static void drawImage( QPainter *, const QRectF &, const QImage & );
91  static void drawPixmap( QPainter *, const QRectF &, const QPixmap & );
92 
93  static void drawRoundFrame( QPainter *,
94  const QRectF &, const QPalette &, int lineWidth, int frameStyle );
95 
96  static void drawRoundedFrame( QPainter *,
97  const QRectF &, double xRadius, double yRadius,
98  const QPalette &, int lineWidth, int frameStyle );
99 
100  static void drawFrame( QPainter *, const QRectF &rect,
101  const QPalette &palette, QPalette::ColorRole foregroundRole,
102  int frameWidth, int midLineWidth, int frameStyle );
103 
104  static void drawFocusRect( QPainter *, const QWidget * );
105  static void drawFocusRect( QPainter *, const QWidget *, const QRect & );
106 
107  static void drawColorBar( QPainter *painter,
108  const QwtColorMap &, const QwtInterval &,
109  const QwtScaleMap &, Qt::Orientation, const QRectF & );
110 
111  static bool isAligning( QPainter *painter );
112  static bool isX11GraphicsSystem();
113 
114  static void fillPixmap( const QWidget *,
115  QPixmap &, const QPoint &offset = QPoint() );
116 
117  static void drawBackgound( QPainter *painter,
118  const QRectF &rect, const QWidget *widget );
119 
120  static QPixmap backingStore( QWidget *, const QSize & );
121 
122 private:
123  static bool d_polylineSplitting;
124  static bool d_roundingAlignment;
125 };
126 
128 inline void QwtPainter::drawPoint( QPainter *painter, double x, double y )
129 {
130  QwtPainter::drawPoint( painter, QPointF( x, y ) );
131 }
132 
134 inline void QwtPainter::drawPoints( QPainter *painter, const QPolygon &polygon )
135 {
136  drawPoints( painter, polygon.data(), polygon.size() );
137 }
138 
140 inline void QwtPainter::drawPoints( QPainter *painter, const QPolygonF &polygon )
141 {
142  drawPoints( painter, polygon.data(), polygon.size() );
143 }
144 
146 inline void QwtPainter::drawLine( QPainter *painter,
147  double x1, double y1, double x2, double y2 )
148 {
149  QwtPainter::drawLine( painter, QPointF( x1, y1 ), QPointF( x2, y2 ) );
150 }
151 
153 inline void QwtPainter::drawLine( QPainter *painter, const QLineF &line )
154 {
155  QwtPainter::drawLine( painter, line.p1(), line.p2() );
156 }
157 
162 inline bool QwtPainter::polylineSplitting()
163 {
164  return d_polylineSplitting;
165 }
166 
175 inline bool QwtPainter::roundingAlignment()
176 {
177  return d_roundingAlignment;
178 }
179 
184 inline bool QwtPainter::roundingAlignment(QPainter *painter)
185 {
186  return d_roundingAlignment && isAligning(painter);
187 }
188 #endif
QwtColorMap
QwtColorMap is used to map values into colors.
Definition: qwt_color_map.h:34
QwtPainter::polylineSplitting
static bool polylineSplitting()
Definition: qwt_painter.h:162
QwtPainter::isAligning
static bool isAligning(QPainter *painter)
Definition: qwt_painter.cpp:177
QwtPainter::drawPoints
static void drawPoints(QPainter *, const QPolygon &)
Wrapper for QPainter::drawPoints()
Definition: qwt_painter.h:134
QwtScaleMap
A scale map.
Definition: qwt_scale_map.h:31
QwtPainter::drawLine
static void drawLine(QPainter *, double x1, double y1, double x2, double y2)
Wrapper for QPainter::drawLine()
Definition: qwt_painter.h:146
QwtInterval
A class representing an interval.
Definition: qwt_interval.h:27
QwtPainter
A collection of QPainter workarounds.
Definition: qwt_painter.h:40
QwtPainter::roundingAlignment
static bool roundingAlignment()
Definition: qwt_painter.h:175
QwtPainter::drawPoint
static void drawPoint(QPainter *, const QPoint &)
Wrapper for QPainter::drawPoint()
Definition: qwt_painter.cpp:568