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annotate dwtx/draw2d/Shape.d @ 98:95307ad235d9

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Added Draw2d code, still work in progress
author Frank Benoit <benoit@tionex.de>
date Sun, 03 Aug 2008 00:52:14 +0200
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98
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2005 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module dwtx.draw2d.Shape;
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14
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15 import dwt.dwthelper.utils;
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16 import dwtx.draw2d.Figure;
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17 import dwtx.draw2d.Graphics;
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18 import dwtx.draw2d.ColorConstants;
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19
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20 /**
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21 * Provides abstract support for a variety of shapes.
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22 * <p>
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23 * When customizing shapes, you shouldn't override paintFigure(). Override fillShape()
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24 * and outlineShape() methods instead.
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25 */
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26 public abstract class Shape
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27 : Figure
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28 {
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29
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30 /** The width of this shape's outline. */
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31 protected int lineWidth = 1;
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32 /** The line style to be used for this shape's outline. */
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33 protected int lineStyle;
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34
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35 private bool
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36 fill = true,
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37 outline = true,
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38 xorFill,
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39 xorOutline;
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40
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41 /**
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42 * Default constructor.
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43 *
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44 * @since 2.0
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45 */
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46 public this() {
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47 lineStyle = Graphics.LINE_SOLID;
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48 }
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49
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50 /**
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51 * Fills the interior of the shape with the background color.
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52 * @param graphics the graphics object
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53 */
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54 protected abstract void fillShape(Graphics graphics);
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55
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56 /**
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57 * Returns the line style used to outline this shape.
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58 * @return the line style
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59 */
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60 public int getLineStyle() {
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61 return lineStyle;
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62 }
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63
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64 /**
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65 * Returns the line width of this shape's outline.
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66 * @return the line width
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67 */
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68 public int getLineWidth() {
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69 return lineWidth;
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70 }
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71
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72 /**
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73 * Returns <code>false</code> as shapes only draw themselves onto other figures, and
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74 * generally dont have rectangular dimensions.
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75 *
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76 * @see Figure#isOpaque()
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77 * @since 2.0
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78 */
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79 public bool isOpaque() {
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80 return false;
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81 }
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82
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83 /**
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84 * Outlines this shape using the foreground color.
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85 * @param graphics the graphics object
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86 */
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87 protected abstract void outlineShape(Graphics graphics);
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88
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89 /**
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90 * Paints the shape. Each shape has an outline to draw, and a region to fill within that
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91 * outline. Disabled shapes must visually depict the disabled state.
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92 *
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93 * @see Figure#paintFigure(Graphics)
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94 */
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95 public void paintFigure(Graphics graphics) {
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96 if (!isEnabled()) {
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97 graphics.translate(1, 1);
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98 graphics.setBackgroundColor(ColorConstants.buttonLightest);
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99 graphics.setForegroundColor(ColorConstants.buttonLightest);
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100 if (fill) {
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101 graphics.setXORMode(xorFill);
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102 fillShape(graphics);
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103 }
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104 if (outline) {
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105 graphics.setXORMode(xorOutline);
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106 graphics.setLineStyle(lineStyle);
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107 graphics.setLineWidth(lineWidth);
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108 outlineShape(graphics);
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109 }
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110 graphics.setBackgroundColor(ColorConstants.buttonDarker);
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111 graphics.setForegroundColor(ColorConstants.buttonDarker);
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112 graphics.translate(-1, -1);
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113 }
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114 if (fill) {
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115 graphics.setXORMode(xorFill);
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116 fillShape(graphics);
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117 }
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118 if (outline) {
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119 graphics.setXORMode(xorOutline);
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120 graphics.setLineStyle(lineStyle);
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121 graphics.setLineWidth(lineWidth);
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122 outlineShape(graphics);
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123 }
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124 }
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125
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126 /**
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127 * Sets whether this shape should fill its region or not. It repaints this figure.
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128 *
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129 * @param b fill state
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130 * @since 2.0
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131 */
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132 public void setFill(bool b) {
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133 if (fill is b)
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134 return;
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135 fill = b;
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136 repaint();
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137 }
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138
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139 /**
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140 * Sets whether XOR based fill should be used by the shape. It repaints this figure.
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141 *
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142 * @param b XOR fill state
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143 * @since 2.0
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144 */
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145 public void setFillXOR(bool b) {
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146 if (xorFill is b)
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147 return;
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148 xorFill = b;
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149 repaint();
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150 }
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151
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152 /**
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153 * Sets the line width to be used to outline the shape.
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154 *
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155 * @param w the new width
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156 * @since 2.0
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157 */
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158 public void setLineWidth(int w) {
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159 if (lineWidth is w)
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160 return;
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161 lineWidth = w;
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162 repaint();
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163 }
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164
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165 /**
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166 * Sets the style of line to be used by this shape.
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167 *
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168 * @param s the new line style
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169 * @since 2.0
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170 */
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171 public void setLineStyle(int s) {
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172 if (lineStyle is s)
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173 return;
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174 lineStyle = s;
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175 repaint();
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176 }
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177
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178 /**
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179 * Sets whether the outline should be drawn for this shape.
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180 *
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181 * @param b <code>true</code> if the shape should be outlined
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182 * @since 2.0
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183 */
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184 public void setOutline(bool b) {
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185 if (outline is b)
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186 return;
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187 outline = b;
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188 repaint();
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189 }
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190
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191 /**
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192 * Sets whether XOR based outline should be used for this shape.
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193 *
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194 * @param b <code>true</code> if the outline should be XOR'ed
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195 * @since 2.0
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196 */
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197 public void setOutlineXOR(bool b) {
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198 if (xorOutline is b)
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199 return;
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200 xorOutline = b;
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201 repaint();
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202 }
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203
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204 /**
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205 * Sets whether XOR based fill and XOR based outline should be used for this shape.
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206 *
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207 * @param b <code>true</code> if the outline and fill should be XOR'ed
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208 * @since 2.0
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209 */
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210 public void setXOR(bool b) {
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211 xorOutline = xorFill = b;
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212 repaint();
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213 }
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214
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215 }