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qwt_painter.h

00001 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
00002  * Qwt Widget Library
00003  * Copyright (C) 1997   Josef Wilgen
00004  * Copyright (C) 2002   Uwe Rathmann
00005  * 
00006  * This library is free software; you can redistribute it and/or
00007  * modify it under the terms of the Qwt License, Version 1.0
00008  *****************************************************************************/
00009 
00010 #ifndef QWT_PAINTER_H
00011 #define QWT_PAINTER_H
00012 
00013 #include <qpoint.h>
00014 #include <qrect.h>
00015 #include "qwt_global.h"
00016 #include "qwt_layout_metrics.h"
00017 
00018 class QPainter;
00019 class QBrush;
00020 class QColor;
00021 class QWidget;
00022 
00023 #if QT_VERSION < 0x040000
00024 class QColorGroup;
00025 class QSimpleRichText;
00026 #else
00027 class QPalette;
00028 class QTextDocument;
00029 #endif
00030 
00031 #if defined(Q_WS_X11)
00032 // Warning: QCOORD_MIN, QCOORD_MAX are wrong on X11.
00033 #define QWT_COORD_MAX 16384
00034 #define QWT_COORD_MIN (-QWT_COORD_MAX - 1)
00035 #else
00036 #define QWT_COORD_MAX 2147483647
00037 #define QWT_COORD_MIN -QWT_COORD_MAX - 1
00038 #endif
00039 
00058 class QWT_EXPORT QwtPainter
00059 {
00060 public:
00061     static void setMetricsMap(const QPaintDevice *layout,
00062         const QPaintDevice *device);
00063     static void setMetricsMap(const QwtMetricsMap &);
00064     static void resetMetricsMap();
00065     static const QwtMetricsMap &metricsMap();
00066 
00067     static void setDeviceClipping(bool);
00068     static bool deviceClipping();
00069 
00070     static void setClipRect(QPainter *, const QRect &);
00071 
00072     static void drawText(QPainter *, int x, int y, 
00073         const QString &);
00074     static void drawText(QPainter *, const QPoint &, 
00075         const QString &);
00076     static void drawText(QPainter *, int x, int y, int w, int h, 
00077         int flags, const QString &);
00078     static void drawText(QPainter *, const QRect &, 
00079         int flags, const QString &);
00080 
00081 #ifndef QT_NO_RICHTEXT
00082 #if QT_VERSION < 0x040000
00083     static void drawSimpleRichText(QPainter *, const QRect &,
00084         int flags, QSimpleRichText &);
00085 #else
00086     static void drawSimpleRichText(QPainter *, const QRect &,
00087         int flags, QTextDocument &);
00088 #endif
00089 #endif
00090 
00091     static void drawRect(QPainter *, int x, int y, int w, int h);
00092     static void drawRect(QPainter *, const QRect &rect);
00093     static void fillRect(QPainter *, const QRect &, const QBrush &); 
00094 
00095     static void drawEllipse(QPainter *, const QRect &);
00096 
00097     static void drawLine(QPainter *, int x1, int y1, int x2, int y2);
00098     static void drawLine(QPainter *, const QPoint &p1, const QPoint &p2);
00099 #if QT_VERSION < 0x040000
00100     static void drawPolygon(QPainter *, const QPointArray &pa);
00101     static void drawPolyline(QPainter *, const QPointArray &pa);
00102 #else
00103     static void drawPolygon(QPainter *, const QPolygon &pa);
00104     static void drawPolyline(QPainter *, const QPolygon &pa);
00105 #endif
00106     static void drawPoint(QPainter *, int x, int y);
00107 
00108 #if QT_VERSION < 0x040000
00109     static void drawRoundFrame(QPainter *, const QRect &,
00110         int width, const QColorGroup &cg, bool sunken);
00111 #else
00112     static void drawRoundFrame(QPainter *, const QRect &,
00113         int width, const QPalette &, bool sunken);
00114 #endif
00115     static void drawFocusRect(QPainter *, QWidget *);
00116     static void drawFocusRect(QPainter *, QWidget *, const QRect &);
00117 
00118 #if QT_VERSION < 0x040000
00119     static QPointArray clip(const QPointArray &);
00120 #else
00121     static QPolygon clip(const QPolygon &);
00122 #endif
00123 
00124 private:
00125     static void drawColoredArc(QPainter *, const QRect &,
00126         int peak, int arc, int intervall, const QColor &c1, const QColor &c2);
00127 
00128     static const QRect &deviceClipRect();
00129     static bool d_deviceClipping;
00130     static QwtMetricsMap d_metricsMap;
00131 };
00132 
00134 inline void QwtPainter::drawLine(QPainter *painter,
00135     const QPoint &p1, const QPoint &p2)
00136 {
00137     drawLine(painter, p1.x(), p1.y(), p2.x(), p2.y());
00138 }
00139 
00140 #endif

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