qwt_plot_canvas.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 // vim: expandtab 00011 00012 #ifndef QWT_PLOT_CANVAS_H 00013 #define QWT_PLOT_CANVAS_H 00014 00015 #include <qframe.h> 00016 #include <qpen.h> 00017 #include "qwt_global.h" 00018 00019 class QwtPlot; 00020 class QPixmap; 00021 00026 class QWT_EXPORT QwtPlotCanvas : public QFrame 00027 { 00028 Q_OBJECT 00029 00030 public: 00031 00053 enum PaintAttribute 00054 { 00055 PaintCached = 1, 00056 PaintPacked = 2 00057 }; 00058 00077 enum FocusIndicator 00078 { 00079 NoFocusIndicator, 00080 CanvasFocusIndicator, 00081 ItemFocusIndicator 00082 }; 00083 00084 explicit QwtPlotCanvas(QwtPlot *); 00085 virtual ~QwtPlotCanvas(); 00086 00087 QwtPlot *plot(); 00088 const QwtPlot *plot() const; 00089 00090 void setFocusIndicator(FocusIndicator); 00091 FocusIndicator focusIndicator() const; 00092 00093 void setPaintAttribute(PaintAttribute, bool on = true); 00094 bool testPaintAttribute(PaintAttribute) const; 00095 00096 QPixmap *paintCache(); 00097 const QPixmap *paintCache() const; 00098 void invalidatePaintCache(); 00099 00100 void replot(); 00101 00102 protected: 00103 virtual void hideEvent(QHideEvent *); 00104 00105 virtual void paintEvent(QPaintEvent *); 00106 00107 virtual void drawContents(QPainter *); 00108 virtual void drawFocusIndicator(QPainter *); 00109 00110 void drawCanvas(QPainter *painter = NULL); 00111 00112 private: 00113 void setSystemBackground(bool); 00114 00115 class PrivateData; 00116 PrivateData *d_data; 00117 }; 00118 00119 #endif
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