1 /* 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package sun.java2d.pipe; 27 28 import java.awt.BasicStroke; 29 import java.awt.Rectangle; 30 import java.awt.Shape; 31 import java.awt.geom.Rectangle2D; 32 import java.awt.geom.PathIterator; 33 import sun.awt.SunHints; 34 import sun.java2d.SunGraphics2D; 35 36 /** 37 * This class is used to convert raw geometry into 8-bit alpha tiles 38 * using an AATileGenerator for application by the next stage of 39 * the pipeline. 40 * This class sets up the Generator and computes the alpha tiles 41 * and then passes them on to a CompositePipe object for painting. 42 */ 43 public class AAShapePipe 44 implements ShapeDrawPipe, ParallelogramPipe 45 { 46 static RenderingEngine renderengine = RenderingEngine.getInstance(); 47 48 CompositePipe outpipe; 49 50 public AAShapePipe(CompositePipe pipe) { 51 outpipe = pipe; 52 } 53 54 public void draw(SunGraphics2D sg, Shape s) { 55 BasicStroke bs; 56 57 if (sg.stroke instanceof BasicStroke) { 58 bs = (BasicStroke) sg.stroke; 59 } else { 60 s = sg.stroke.createStrokedShape(s); 61 bs = null; 62 } 63 64 renderPath(sg, s, bs); 65 } 66 67 public void fill(SunGraphics2D sg, Shape s) { 68 renderPath(sg, s, null); 69 } 70 71 private static Rectangle2D computeBBox(double ux1, double uy1, 72 double ux2, double uy2) 73 { 74 if ((ux2 -= ux1) < 0) { 75 ux1 += ux2; 76 ux2 = -ux2; 77 } 78 if ((uy2 -= uy1) < 0) { 79 uy1 += uy2; 80 uy2 = -uy2; 81 } 82 return new Rectangle2D.Double(ux1, uy1, ux2, uy2); 83 } 84 85 public void fillParallelogram(SunGraphics2D sg, 86 double ux1, double uy1, 87 double ux2, double uy2, 88 double x, double y, 89 double dx1, double dy1, 90 double dx2, double dy2) 91 { 92 Region clip = sg.getCompClip(); 93 int abox[] = new int[4]; 94 AATileGenerator aatg = 95 renderengine.getAATileGenerator(x, y, dx1, dy1, dx2, dy2, 0, 0, 96 clip, abox); 97 if (aatg == null) { 98 // Nothing to render 99 return; 100 } 101 102 renderTiles(sg, computeBBox(ux1, uy1, ux2, uy2), aatg, abox); 103 } 104 105 public void drawParallelogram(SunGraphics2D sg, 106 double ux1, double uy1, 107 double ux2, double uy2, 108 double x, double y, 109 double dx1, double dy1, 110 double dx2, double dy2, 111 double lw1, double lw2) 112 { 113 Region clip = sg.getCompClip(); 114 int abox[] = new int[4]; 115 AATileGenerator aatg = 116 renderengine.getAATileGenerator(x, y, dx1, dy1, dx2, dy2, lw1, lw2, 117 clip, abox); 118 if (aatg == null) { 119 // Nothing to render 120 return; 121 } 122 123 // Note that bbox is of the original shape, not the wide path. 124 // This is appropriate for handing to Paint methods... 125 renderTiles(sg, computeBBox(ux1, uy1, ux2, uy2), aatg, abox); 126 } 127 128 private static byte[] theTile; 129 130 private static synchronized byte[] getAlphaTile(int len) { 131 byte[] t = theTile; 132 if (t == null || t.length < len) { 133 t = new byte[len]; 134 } else { 135 theTile = null; 136 } 137 return t; 138 } 139 140 private static synchronized void dropAlphaTile(byte[] t) { 141 theTile = t; 142 } 143 144 public void renderPath(SunGraphics2D sg, Shape s, BasicStroke bs) { 145 boolean adjust = (bs != null && 146 sg.strokeHint != SunHints.INTVAL_STROKE_PURE); 147 boolean thin = (sg.strokeState <= SunGraphics2D.STROKE_THINDASHED); 148 149 Region clip = sg.getCompClip(); 150 int abox[] = new int[4]; 151 AATileGenerator aatg = 152 renderengine.getAATileGenerator(s, sg.transform, clip, 153 bs, thin, adjust, abox); 154 if (aatg == null) { 155 // Nothing to render 156 return; 157 } 158 159 renderTiles(sg, s, aatg, abox); 160 } 161 162 public void renderTiles(SunGraphics2D sg, Shape s, 163 AATileGenerator aatg, int abox[]) 164 { 165 Object context = null; 166 byte alpha[] = null; 167 try { 168 context = outpipe.startSequence(sg, s, 169 new Rectangle(abox[0], abox[1], 170 abox[2] - abox[0], 171 abox[3] - abox[1]), 172 abox); 173 174 int tw = aatg.getTileWidth(); 175 int th = aatg.getTileHeight(); 176 alpha = getAlphaTile(tw * th); 177 178 byte[] atile; 179 180 for (int y = abox[1]; y < abox[3]; y += th) { 181 for (int x = abox[0]; x < abox[2]; x += tw) { 182 int w = Math.min(tw, abox[2] - x); 183 int h = Math.min(th, abox[3] - y); 184 185 int a = aatg.getTypicalAlpha(); 186 if (a == 0x00 || 187 outpipe.needTile(context, x, y, w, h) == false) 188 { 189 aatg.nextTile(); 190 outpipe.skipTile(context, x, y); 191 continue; 192 } 193 if (a == 0xff) { 194 atile = null; 195 aatg.nextTile(); 196 } else { 197 atile = alpha; 198 aatg.getAlpha(alpha, 0, tw); 199 } 200 201 outpipe.renderPathTile(context, atile, 0, tw, 202 x, y, w, h); 203 } 204 } 205 } finally { 206 aatg.dispose(); 207 if (context != null) { 208 outpipe.endSequence(context); 209 } 210 if (alpha != null) { 211 dropAlphaTile(alpha); 212 } 213 } 214 } 215 } | 1 /* 2 * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 package sun.java2d.pipe; 26 27 import java.awt.BasicStroke; 28 import java.awt.Rectangle; 29 import java.awt.Shape; 30 import java.awt.geom.Rectangle2D; 31 import sun.awt.SunHints; 32 import sun.java2d.SunGraphics2D; 33 34 /** 35 * This class is used to convert raw geometry into 8-bit alpha tiles 36 * using an AATileGenerator for application by the next stage of 37 * the pipeline. 38 * This class sets up the Generator and computes the alpha tiles 39 * and then passes them on to a CompositePipe object for painting. 40 */ 41 public class AAShapePipe 42 implements ShapeDrawPipe, ParallelogramPipe 43 { 44 static RenderingEngine renderengine = RenderingEngine.getInstance(); 45 46 // Per-thread TileState (~1K very small so do not use any Weak Reference) 47 private static final ThreadLocal<TileState> tileStateThreadLocal = 48 new ThreadLocal<TileState>() { 49 @Override 50 protected TileState initialValue() { 51 return new TileState(); 52 } 53 }; 54 55 CompositePipe outpipe; 56 57 public AAShapePipe(CompositePipe pipe) { 58 outpipe = pipe; 59 } 60 61 public void draw(SunGraphics2D sg, Shape s) { 62 BasicStroke bs; 63 64 if (sg.stroke instanceof BasicStroke) { 65 bs = (BasicStroke) sg.stroke; 66 } else { 67 s = sg.stroke.createStrokedShape(s); 68 bs = null; 69 } 70 71 renderPath(sg, s, bs); 72 } 73 74 public void fill(SunGraphics2D sg, Shape s) { 75 renderPath(sg, s, null); 76 } 77 78 public void fillParallelogram(SunGraphics2D sg, 79 double ux1, double uy1, 80 double ux2, double uy2, 81 double x, double y, 82 double dx1, double dy1, 83 double dx2, double dy2) 84 { 85 Region clip = sg.getCompClip(); 86 final TileState ts = tileStateThreadLocal.get(); 87 final int[] abox = ts.abox; 88 89 AATileGenerator aatg = 90 renderengine.getAATileGenerator(x, y, dx1, dy1, dx2, dy2, 0, 0, 91 clip, abox); 92 if (aatg == null) { 93 // Nothing to render 94 return; 95 } 96 97 renderTiles(sg, ts.computeBBox(ux1, uy1, ux2, uy2), aatg, abox, ts); 98 } 99 100 public void drawParallelogram(SunGraphics2D sg, 101 double ux1, double uy1, 102 double ux2, double uy2, 103 double x, double y, 104 double dx1, double dy1, 105 double dx2, double dy2, 106 double lw1, double lw2) 107 { 108 Region clip = sg.getCompClip(); 109 final TileState ts = tileStateThreadLocal.get(); 110 final int[] abox = ts.abox; 111 112 AATileGenerator aatg = 113 renderengine.getAATileGenerator(x, y, dx1, dy1, dx2, dy2, lw1, lw2, 114 clip, abox); 115 if (aatg == null) { 116 // Nothing to render 117 return; 118 } 119 120 // Note that bbox is of the original shape, not the wide path. 121 // This is appropriate for handing to Paint methods... 122 renderTiles(sg, ts.computeBBox(ux1, uy1, ux2, uy2), aatg, abox, ts); 123 } 124 125 public void renderPath(SunGraphics2D sg, Shape s, BasicStroke bs) { 126 boolean adjust = (bs != null && 127 sg.strokeHint != SunHints.INTVAL_STROKE_PURE); 128 boolean thin = (sg.strokeState <= SunGraphics2D.STROKE_THINDASHED); 129 130 Region clip = sg.getCompClip(); 131 final TileState ts = tileStateThreadLocal.get(); 132 final int[] abox = ts.abox; 133 134 AATileGenerator aatg = 135 renderengine.getAATileGenerator(s, sg.transform, clip, 136 bs, thin, adjust, abox); 137 if (aatg == null) { 138 // Nothing to render 139 return; 140 } 141 142 renderTiles(sg, s, aatg, abox, ts); 143 } 144 145 public void renderTiles(SunGraphics2D sg, Shape s, 146 AATileGenerator aatg, int abox[], TileState ts) 147 { 148 Object context = null; 149 try { 150 context = outpipe.startSequence(sg, s, 151 ts.computeDevBox(abox), 152 abox); 153 154 final int tw = aatg.getTileWidth(); 155 final int th = aatg.getTileHeight(); 156 157 // get tile from thread local storage: 158 final byte[] alpha = ts.getAlphaTile(tw * th); 159 byte[] atile; 160 161 for (int y = abox[1]; y < abox[3]; y += th) { 162 int h = Math.min(th, abox[3] - y); 163 164 for (int x = abox[0]; x < abox[2]; x += tw) { 165 int w = Math.min(tw, abox[2] - x); 166 167 int a = aatg.getTypicalAlpha(); 168 if (a == 0x00 || 169 outpipe.needTile(context, x, y, w, h) == false) 170 { 171 aatg.nextTile(); 172 outpipe.skipTile(context, x, y); 173 continue; 174 } 175 if (a == 0xff) { 176 atile = null; 177 aatg.nextTile(); 178 } else { 179 atile = alpha; 180 aatg.getAlpha(alpha, 0, tw); 181 } 182 183 outpipe.renderPathTile(context, atile, 0, tw, 184 x, y, w, h); 185 } 186 } 187 } finally { 188 aatg.dispose(); 189 if (context != null) { 190 outpipe.endSequence(context); 191 } 192 } 193 } 194 195 // Tile state used by AAShapePipe 196 static final class TileState { 197 // cached tile (32 x 32 tile by default) 198 private byte[] theTile = new byte[32 * 32]; 199 // dirty aabox array 200 final int[] abox = new int[4]; 201 // dirty bbox rectangle 202 private final Rectangle dev = new Rectangle(); 203 // dirty bbox rectangle2D.Double 204 private final Rectangle2D.Double bbox2D = new Rectangle2D.Double(); 205 206 byte[] getAlphaTile(int len) { 207 byte[] t = theTile; 208 if (t.length < len) { 209 // create a larger tile and may free current theTile (too small) 210 theTile = t = new byte[len]; 211 } 212 return t; 213 } 214 215 Rectangle computeDevBox(final int[] abox) { 216 final Rectangle box = this.dev; 217 box.x = abox[0]; 218 box.y = abox[1]; 219 box.width = abox[2] - abox[0]; 220 box.height = abox[3] - abox[1]; 221 return box; 222 } 223 224 Rectangle2D computeBBox(double ux1, double uy1, 225 double ux2, double uy2) 226 { 227 if ((ux2 -= ux1) < 0.0) { 228 ux1 += ux2; 229 ux2 = -ux2; 230 } 231 if ((uy2 -= uy1) < 0.0) { 232 uy1 += uy2; 233 uy2 = -uy2; 234 } 235 final Rectangle2D.Double box = this.bbox2D; 236 box.x = ux1; 237 box.y = uy1; 238 box.width = ux2; 239 box.height = uy2; 240 return box; 241 } 242 } 243 244 } |