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1 /* |
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2 * Copyright (c) 1998, 2007, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package sun.java2d.pipe; |
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27 |
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28 import sun.java2d.SunGraphics2D; |
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29 import sun.java2d.SurfaceData; |
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30 import java.awt.Rectangle; |
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31 import java.awt.Shape; |
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32 import java.awt.BasicStroke; |
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33 import java.awt.geom.PathIterator; |
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34 import java.awt.geom.AffineTransform; |
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35 import java.awt.geom.Rectangle2D; |
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36 import sun.awt.SunHints; |
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37 |
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38 /** |
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39 * This class is used to convert raw geometry into a span iterator |
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40 * object using a simple flattening polygon scan converter. |
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41 * The iterator can be passed on to special SpanFiller loops to |
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42 * perform the actual rendering. |
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43 */ |
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44 public abstract class SpanShapeRenderer implements ShapeDrawPipe { |
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45 static final RenderingEngine RenderEngine = RenderingEngine.getInstance(); |
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46 |
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47 public static class Composite extends SpanShapeRenderer { |
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48 CompositePipe comppipe; |
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49 |
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50 public Composite(CompositePipe pipe) { |
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51 comppipe = pipe; |
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52 } |
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53 |
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54 public Object startSequence(SunGraphics2D sg, Shape s, |
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55 Rectangle devR, int[] bbox) { |
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56 return comppipe.startSequence(sg, s, devR, bbox); |
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57 } |
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58 |
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59 public void renderBox(Object ctx, int x, int y, int w, int h) { |
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60 comppipe.renderPathTile(ctx, null, 0, w, x, y, w, h); |
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61 } |
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62 |
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63 public void endSequence(Object ctx) { |
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64 comppipe.endSequence(ctx); |
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65 } |
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66 } |
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67 |
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68 public static class Simple extends SpanShapeRenderer |
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69 implements LoopBasedPipe |
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70 { |
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71 public Object startSequence(SunGraphics2D sg, Shape s, |
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72 Rectangle devR, int[] bbox) { |
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73 return sg; |
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74 } |
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75 |
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76 public void renderBox(Object ctx, int x, int y, int w, int h) { |
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77 SunGraphics2D sg2d = (SunGraphics2D) ctx; |
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78 SurfaceData sd = sg2d.getSurfaceData(); |
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79 sg2d.loops.fillRectLoop.FillRect(sg2d, sd, x, y, w, h); |
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80 } |
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81 |
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82 public void endSequence(Object ctx) { |
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83 } |
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84 } |
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85 |
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86 public void draw(SunGraphics2D sg, Shape s) { |
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87 if (sg.stroke instanceof BasicStroke) { |
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88 ShapeSpanIterator sr = LoopPipe.getStrokeSpans(sg, s); |
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89 try { |
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90 renderSpans(sg, sg.getCompClip(), s, sr); |
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91 } finally { |
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92 sr.dispose(); |
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93 } |
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94 } else { |
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95 fill(sg, sg.stroke.createStrokedShape(s)); |
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96 } |
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97 } |
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98 |
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99 public static final int NON_RECTILINEAR_TRANSFORM_MASK = |
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100 (AffineTransform.TYPE_GENERAL_TRANSFORM | |
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101 AffineTransform.TYPE_GENERAL_ROTATION); |
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102 |
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103 public void fill(SunGraphics2D sg, Shape s) { |
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104 if (s instanceof Rectangle2D && |
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105 (sg.transform.getType() & NON_RECTILINEAR_TRANSFORM_MASK) == 0) |
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106 { |
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107 renderRect(sg, (Rectangle2D) s); |
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108 return; |
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109 } |
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110 |
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111 Region clipRegion = sg.getCompClip(); |
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112 ShapeSpanIterator sr = LoopPipe.getFillSSI(sg); |
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113 try { |
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114 sr.setOutputArea(clipRegion); |
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115 sr.appendPath(s.getPathIterator(sg.transform)); |
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116 renderSpans(sg, clipRegion, s, sr); |
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117 } finally { |
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118 sr.dispose(); |
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119 } |
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120 } |
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121 |
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122 public abstract Object startSequence(SunGraphics2D sg, Shape s, |
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123 Rectangle devR, int[] bbox); |
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124 |
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125 public abstract void renderBox(Object ctx, int x, int y, int w, int h); |
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126 |
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127 public abstract void endSequence(Object ctx); |
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128 |
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129 public void renderRect(SunGraphics2D sg, Rectangle2D r) { |
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130 double corners[] = { |
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131 r.getX(), r.getY(), r.getWidth(), r.getHeight(), |
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132 }; |
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133 corners[2] += corners[0]; |
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134 corners[3] += corners[1]; |
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135 if (corners[2] <= corners[0] || corners[3] <= corners[1]) { |
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136 return; |
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137 } |
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138 sg.transform.transform(corners, 0, corners, 0, 2); |
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139 if (corners[2] < corners[0]) { |
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140 double t = corners[2]; |
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141 corners[2] = corners[0]; |
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142 corners[0] = t; |
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143 } |
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144 if (corners[3] < corners[1]) { |
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145 double t = corners[3]; |
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146 corners[3] = corners[1]; |
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147 corners[1] = t; |
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148 } |
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149 int abox[] = { |
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150 (int) corners[0], |
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151 (int) corners[1], |
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152 (int) corners[2], |
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153 (int) corners[3], |
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154 }; |
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155 Rectangle devR = new Rectangle(abox[0], abox[1], |
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156 abox[2] - abox[0], |
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157 abox[3] - abox[1]); |
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158 Region clipRegion = sg.getCompClip(); |
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159 clipRegion.clipBoxToBounds(abox); |
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160 if (abox[0] >= abox[2] || abox[1] >= abox[3]) { |
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161 return; |
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162 } |
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163 Object context = startSequence(sg, r, devR, abox); |
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164 if (clipRegion.isRectangular()) { |
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165 renderBox(context, abox[0], abox[1], |
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166 abox[2] - abox[0], |
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167 abox[3] - abox[1]); |
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168 } else { |
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169 SpanIterator sr = clipRegion.getSpanIterator(abox); |
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170 while (sr.nextSpan(abox)) { |
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171 renderBox(context, abox[0], abox[1], |
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172 abox[2] - abox[0], |
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173 abox[3] - abox[1]); |
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174 } |
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175 } |
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176 endSequence(context); |
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177 } |
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178 |
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179 public void renderSpans(SunGraphics2D sg, Region clipRegion, Shape s, |
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180 ShapeSpanIterator sr) |
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181 { |
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182 Object context = null; |
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183 int abox[] = new int[4]; |
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184 try { |
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185 sr.getPathBox(abox); |
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186 Rectangle devR = new Rectangle(abox[0], abox[1], |
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187 abox[2] - abox[0], |
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188 abox[3] - abox[1]); |
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189 clipRegion.clipBoxToBounds(abox); |
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190 if (abox[0] >= abox[2] || abox[1] >= abox[3]) { |
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191 return; |
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192 } |
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193 sr.intersectClipBox(abox[0], abox[1], abox[2], abox[3]); |
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194 context = startSequence(sg, s, devR, abox); |
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195 |
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196 spanClipLoop(context, sr, clipRegion, abox); |
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197 |
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198 } finally { |
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199 if (context != null) { |
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200 endSequence(context); |
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201 } |
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202 } |
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203 } |
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204 |
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205 public void spanClipLoop(Object ctx, SpanIterator sr, |
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206 Region r, int[] abox) { |
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207 if (!r.isRectangular()) { |
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208 sr = r.filter(sr); |
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209 } |
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210 while (sr.nextSpan(abox)) { |
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211 int x = abox[0]; |
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212 int y = abox[1]; |
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213 renderBox(ctx, x, y, abox[2] - x, abox[3] - y); |
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214 } |
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215 } |
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216 } |