Qwt User's Guide 5.2.2

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 <qpen.h>
00016 #include "qwt_global.h"
00017 #include "qwt_layout_metrics.h"
00018 #include "qwt_polygon.h"
00019 
00020 class QPainter;
00021 class QBrush;
00022 class QColor;
00023 class QWidget;
00024 class QwtScaleMap;
00025 class QwtColorMap;
00026 class QwtDoubleInterval;
00027 
00028 #if QT_VERSION < 0x040000
00029 class QColorGroup;
00030 class QSimpleRichText;
00031 #else
00032 class QPalette;
00033 class QTextDocument;
00034 #endif
00035 
00036 #if defined(Q_WS_X11)
00037 // Warning: QCOORD_MIN, QCOORD_MAX are wrong on X11.
00038 #define QWT_COORD_MAX 16384
00039 #define QWT_COORD_MIN (-QWT_COORD_MAX - 1)
00040 #else
00041 #define QWT_COORD_MAX 2147483647
00042 #define QWT_COORD_MIN -QWT_COORD_MAX - 1
00043 #endif
00044 
00063 class QWT_EXPORT QwtPainter
00064 {
00065 public:
00066     static void setMetricsMap(const QPaintDevice *layout,
00067         const QPaintDevice *device);
00068     static void setMetricsMap(const QwtMetricsMap &);
00069     static void resetMetricsMap();
00070     static const QwtMetricsMap &metricsMap();
00071 
00072     static void setDeviceClipping(bool);
00073     static bool deviceClipping();
00074     static const QRect &deviceClipRect();
00075 
00076     static void setClipRect(QPainter *, const QRect &);
00077 
00078     static void drawText(QPainter *, int x, int y, 
00079         const QString &);
00080     static void drawText(QPainter *, const QPoint &, 
00081         const QString &);
00082     static void drawText(QPainter *, int x, int y, int w, int h, 
00083         int flags, const QString &);
00084     static void drawText(QPainter *, const QRect &, 
00085         int flags, const QString &);
00086 
00087 #ifndef QT_NO_RICHTEXT
00088 #if QT_VERSION < 0x040000
00089     static void drawSimpleRichText(QPainter *, const QRect &,
00090         int flags, QSimpleRichText &);
00091 #else
00092     static void drawSimpleRichText(QPainter *, const QRect &,
00093         int flags, QTextDocument &);
00094 #endif
00095 #endif
00096 
00097     static void drawRect(QPainter *, int x, int y, int w, int h);
00098     static void drawRect(QPainter *, const QRect &rect);
00099     static void fillRect(QPainter *, const QRect &, const QBrush &); 
00100 
00101     static void drawEllipse(QPainter *, const QRect &);
00102     static void drawPie(QPainter *, const QRect & r, int a, int alen);
00103 
00104     static void drawLine(QPainter *, int x1, int y1, int x2, int y2);
00105     static void drawLine(QPainter *, const QPoint &p1, const QPoint &p2);
00106     static void drawPolygon(QPainter *, const QwtPolygon &pa);
00107     static void drawPolyline(QPainter *, const QwtPolygon &pa);
00108     static void drawPoint(QPainter *, int x, int y);
00109 
00110 #if QT_VERSION < 0x040000
00111     static void drawRoundFrame(QPainter *, const QRect &,
00112         int width, const QColorGroup &cg, bool sunken);
00113 #else
00114     static void drawRoundFrame(QPainter *, const QRect &,
00115         int width, const QPalette &, bool sunken);
00116 #endif
00117     static void drawFocusRect(QPainter *, QWidget *);
00118     static void drawFocusRect(QPainter *, QWidget *, const QRect &);
00119 
00120     static void drawColorBar(QPainter *painter, 
00121         const QwtColorMap &, const QwtDoubleInterval &,
00122         const QwtScaleMap &, Qt::Orientation, const QRect &);
00123 
00124 #if QT_VERSION < 0x040000
00125     static void setSVGMode(bool on);
00126     static bool isSVGMode();
00127 #endif
00128 
00129     static QPen scaledPen(const QPen &);
00130 
00131 private:
00132     static void drawColoredArc(QPainter *, const QRect &,
00133         int peak, int arc, int intervall, const QColor &c1, const QColor &c2);
00134 
00135     static bool d_deviceClipping;
00136     static QwtMetricsMap d_metricsMap;
00137 #if QT_VERSION < 0x040000
00138     static bool d_SVGMode;
00139 #endif
00140 };
00141 
00143 inline void QwtPainter::drawLine(QPainter *painter,
00144     const QPoint &p1, const QPoint &p2)
00145 {
00146     drawLine(painter, p1.x(), p1.y(), p2.x(), p2.y());
00147 }
00148 
00154 inline bool QwtPainter::deviceClipping()
00155 {
00156     return d_deviceClipping;
00157 }
00158 
00159 #endif