1 | /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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2 | * Qwt Widget Library
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3 | * Copyright (C) 1997 Josef Wilgen
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4 | * Copyright (C) 2002 Uwe Rathmann
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5 | *
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6 | * This library is free software; you can redistribute it and/or
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7 | * modify it under the terms of the Qwt License, Version 1.0
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8 | *****************************************************************************/
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9 |
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10 | #ifndef QWT_PAINTER_H
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11 | #define QWT_PAINTER_H
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12 |
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13 | #include "qwt_global.h"
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14 |
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15 | #include <qpoint.h>
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16 | #include <qrect.h>
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17 | #include <qpen.h>
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18 | #include <qline.h>
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19 | #include <qpalette.h>
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20 |
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21 | class QPainter;
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22 | class QBrush;
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23 | class QColor;
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24 | class QWidget;
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25 | class QPolygonF;
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26 | class QRectF;
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27 | class QImage;
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28 | class QPixmap;
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29 | class QwtScaleMap;
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30 | class QwtColorMap;
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31 | class QwtInterval;
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32 |
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33 | class QTextDocument;
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34 | class QPainterPath;
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35 |
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36 | /*!
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37 | \brief A collection of QPainter workarounds
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38 | */
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39 | class QWT_EXPORT QwtPainter
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40 | {
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41 | public:
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42 | static void setPolylineSplitting( bool );
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43 | static bool polylineSplitting();
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44 |
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45 | static void setRoundingAlignment( bool );
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46 | static bool roundingAlignment();
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47 | static bool roundingAlignment(QPainter *);
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48 |
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49 | static void drawText( QPainter *, double x, double y, const QString & );
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50 | static void drawText( QPainter *, const QPointF &, const QString & );
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51 | static void drawText( QPainter *, double x, double y, double w, double h,
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52 | int flags, const QString & );
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53 | static void drawText( QPainter *, const QRectF &,
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54 | int flags, const QString & );
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55 |
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56 | #ifndef QT_NO_RICHTEXT
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57 | static void drawSimpleRichText( QPainter *, const QRectF &,
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58 | int flags, const QTextDocument & );
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59 | #endif
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60 |
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61 | static void drawRect( QPainter *, double x, double y, double w, double h );
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62 | static void drawRect( QPainter *, const QRectF &rect );
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63 | static void fillRect( QPainter *, const QRectF &, const QBrush & );
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64 |
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65 | static void drawEllipse( QPainter *, const QRectF & );
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66 | static void drawPie( QPainter *, const QRectF &, int a, int alen );
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67 |
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68 | static void drawLine( QPainter *, double x1, double y1, double x2, double y2 );
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69 | static void drawLine( QPainter *, const QPointF &p1, const QPointF &p2 );
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70 | static void drawLine( QPainter *, const QLineF & );
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71 |
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72 | static void drawPolygon( QPainter *, const QPolygonF & );
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73 | static void drawPolyline( QPainter *, const QPolygonF & );
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74 | static void drawPolyline( QPainter *, const QPointF *, int pointCount );
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75 |
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76 | static void drawPolygon( QPainter *, const QPolygon & );
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77 | static void drawPolyline( QPainter *, const QPolygon & );
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78 | static void drawPolyline( QPainter *, const QPoint *, int pointCount );
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79 |
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80 | static void drawPoint( QPainter *, const QPoint & );
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81 | static void drawPoints( QPainter *, const QPolygon & );
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82 | static void drawPoints( QPainter *, const QPoint *, int pointCount );
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83 |
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84 | static void drawPoint( QPainter *, double x, double y );
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85 | static void drawPoint( QPainter *, const QPointF & );
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86 | static void drawPoints( QPainter *, const QPolygonF & );
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87 | static void drawPoints( QPainter *, const QPointF *, int pointCount );
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88 |
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89 | static void drawPath( QPainter *, const QPainterPath & );
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90 | static void drawImage( QPainter *, const QRectF &, const QImage & );
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91 | static void drawPixmap( QPainter *, const QRectF &, const QPixmap & );
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92 |
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93 | static void drawRoundFrame( QPainter *,
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94 | const QRectF &, const QPalette &, int lineWidth, int frameStyle );
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95 |
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96 | static void drawRoundedFrame( QPainter *,
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97 | const QRectF &, double xRadius, double yRadius,
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98 | const QPalette &, int lineWidth, int frameStyle );
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99 |
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100 | static void drawFrame( QPainter *, const QRectF &rect,
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101 | const QPalette &palette, QPalette::ColorRole foregroundRole,
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102 | int frameWidth, int midLineWidth, int frameStyle );
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103 |
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104 | static void drawFocusRect( QPainter *, const QWidget * );
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105 | static void drawFocusRect( QPainter *, const QWidget *, const QRect & );
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106 |
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107 | static void drawColorBar( QPainter *painter,
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108 | const QwtColorMap &, const QwtInterval &,
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109 | const QwtScaleMap &, Qt::Orientation, const QRectF & );
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110 |
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111 | static bool isAligning( QPainter *painter );
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112 | static bool isX11GraphicsSystem();
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113 |
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114 | static void fillPixmap( const QWidget *,
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115 | QPixmap &, const QPoint &offset = QPoint() );
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116 |
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117 | static void drawBackgound( QPainter *painter,
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118 | const QRectF &rect, const QWidget *widget );
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119 |
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120 | static QPixmap backingStore( QWidget *, const QSize & );
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121 |
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122 | private:
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123 | static bool d_polylineSplitting;
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124 | static bool d_roundingAlignment;
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125 | };
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126 |
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127 | //! Wrapper for QPainter::drawPoint()
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128 | inline void QwtPainter::drawPoint( QPainter *painter, double x, double y )
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129 | {
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130 | QwtPainter::drawPoint( painter, QPointF( x, y ) );
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131 | }
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132 |
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133 | //! Wrapper for QPainter::drawPoints()
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134 | inline void QwtPainter::drawPoints( QPainter *painter, const QPolygon &polygon )
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135 | {
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136 | drawPoints( painter, polygon.data(), polygon.size() );
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137 | }
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138 |
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139 | //! Wrapper for QPainter::drawPoints()
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140 | inline void QwtPainter::drawPoints( QPainter *painter, const QPolygonF &polygon )
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141 | {
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142 | drawPoints( painter, polygon.data(), polygon.size() );
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143 | }
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144 |
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145 | //! Wrapper for QPainter::drawLine()
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146 | inline void QwtPainter::drawLine( QPainter *painter,
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147 | double x1, double y1, double x2, double y2 )
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148 | {
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149 | QwtPainter::drawLine( painter, QPointF( x1, y1 ), QPointF( x2, y2 ) );
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150 | }
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151 |
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152 | //! Wrapper for QPainter::drawLine()
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153 | inline void QwtPainter::drawLine( QPainter *painter, const QLineF &line )
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154 | {
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155 | QwtPainter::drawLine( painter, line.p1(), line.p2() );
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156 | }
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157 |
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158 | /*!
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159 | \return True, when line splitting for the raster paint engine is enabled.
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160 | \sa setPolylineSplitting()
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161 | */
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162 | inline bool QwtPainter::polylineSplitting()
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163 | {
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164 | return d_polylineSplitting;
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165 | }
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166 |
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167 | /*!
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168 | Check whether coordinates should be rounded, before they are painted
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169 | to a paint engine that rounds to integer values. For other paint engines
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170 | ( PDF, SVG ), this flag has no effect.
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171 |
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172 | \return True, when rounding is enabled
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173 | \sa setRoundingAlignment(), isAligning()
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174 | */
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175 | inline bool QwtPainter::roundingAlignment()
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176 | {
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177 | return d_roundingAlignment;
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178 | }
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179 |
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180 | /*!
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181 | \return roundingAlignment() && isAligning(painter);
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182 | \param painter Painter
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183 | */
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184 | inline bool QwtPainter::roundingAlignment(QPainter *painter)
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185 | {
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186 | return d_roundingAlignment && isAligning(painter);
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187 | }
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188 | #endif
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