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| 1 | +/* | |
| 2 | + * Copyright (c) 1997, 2002, 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.lang.ref.WeakReference; | |
| 29 | +import java.awt.Rectangle; | |
| 30 | +import java.awt.Shape; | |
| 31 | +import java.awt.PaintContext; | |
| 32 | +import java.awt.Transparency; | |
| 33 | +import java.awt.image.ColorModel; | |
| 34 | +import java.awt.image.Raster; | |
| 35 | +import java.awt.image.WritableRaster; | |
| 36 | +import java.awt.image.BufferedImage; | |
| 37 | +import sun.awt.image.BufImgSurfaceData; | |
| 38 | +import sun.java2d.SunGraphics2D; | |
| 39 | +import sun.java2d.SurfaceData; | |
| 40 | +import sun.java2d.loops.Blit; | |
| 41 | +import sun.java2d.loops.MaskBlit; | |
| 42 | +import sun.java2d.loops.CompositeType; | |
| 43 | +import sun.java2d.loops.GraphicsPrimitiveMgr; | |
| 44 | + | |
| 45 | +/** | |
| 46 | + * This class implements a CompositePipe that renders path alpha tiles | |
| 47 | + * into a destination according to the Composite attribute of a | |
| 48 | + * SunGraphics2D. | |
| 49 | + */ | |
| 50 | +public class AlphaPaintPipe implements CompositePipe { | |
| 51 | + static WeakReference cachedLastRaster; | |
| 52 | + static WeakReference cachedLastColorModel; | |
| 53 | + static WeakReference cachedLastData; | |
| 54 | + | |
| 55 | + static class TileContext { | |
| 56 | + SunGraphics2D sunG2D; | |
| 57 | + PaintContext paintCtxt; | |
| 58 | + ColorModel paintModel; | |
| 59 | + WeakReference lastRaster; | |
| 60 | + WeakReference lastData; | |
| 61 | + MaskBlit lastMask; | |
| 62 | + Blit lastBlit; | |
| 63 | + SurfaceData dstData; | |
| 64 | + | |
| 65 | + public TileContext(SunGraphics2D sg, PaintContext pc) { | |
| 66 | + sunG2D = sg; | |
| 67 | + paintCtxt = pc; | |
| 68 | + paintModel = pc.getColorModel(); | |
| 69 | + dstData = sg.getSurfaceData(); | |
| 70 | + synchronized (AlphaPaintPipe.class) { | |
| 71 | + if (cachedLastColorModel != null && | |
| 72 | + cachedLastColorModel.get() == paintModel) | |
| 73 | + { | |
| 74 | + this.lastRaster = cachedLastRaster; | |
| 75 | + this.lastData = cachedLastData; | |
| 76 | + } | |
| 77 | + } | |
| 78 | + } | |
| 79 | + } | |
| 80 | + | |
| 81 | + public Object startSequence(SunGraphics2D sg, Shape s, Rectangle devR, | |
| 82 | + int[] abox) { | |
| 83 | + PaintContext paintContext = | |
| 84 | + sg.paint.createContext(sg.getDeviceColorModel(), | |
| 85 | + devR, | |
| 86 | + s.getBounds2D(), | |
| 87 | + sg.cloneTransform(), | |
| 88 | + sg.getRenderingHints()); | |
| 89 | + return new TileContext(sg, paintContext); | |
| 90 | + } | |
| 91 | + | |
| 92 | + public boolean needTile(Object context, int x, int y, int w, int h) { | |
| 93 | + return true; | |
| 94 | + } | |
| 95 | + | |
| 96 | + private static final int TILE_SIZE = 32; | |
| 97 | + | |
| 98 | + public void renderPathTile(Object ctx, | |
| 99 | + byte[] atile, int offset, int tilesize, | |
| 100 | + int x, int y, int w, int h) { | |
| 101 | + TileContext context = (TileContext) ctx; | |
| 102 | + PaintContext paintCtxt = context.paintCtxt; | |
| 103 | + SunGraphics2D sg = context.sunG2D; | |
| 104 | + SurfaceData dstData = context.dstData; | |
| 105 | + SurfaceData srcData = null; | |
| 106 | + Raster lastRas = null; | |
| 107 | + if (context.lastData != null && context.lastRaster != null) { | |
| 108 | + srcData = (SurfaceData) context.lastData.get(); | |
| 109 | + lastRas = (Raster) context.lastRaster.get(); | |
| 110 | + if (srcData == null || lastRas == null) { | |
| 111 | + srcData = null; | |
| 112 | + lastRas = null; | |
| 113 | + } | |
| 114 | + } | |
| 115 | + ColorModel paintModel = context.paintModel; | |
| 116 | + | |
| 117 | + for (int rely = 0; rely < h; rely += TILE_SIZE) { | |
| 118 | + int ty = y + rely; | |
| 119 | + int th = Math.min(h-rely, TILE_SIZE); | |
| 120 | + for (int relx = 0; relx < w; relx += TILE_SIZE) { | |
| 121 | + int tx = x + relx; | |
| 122 | + int tw = Math.min(w-relx, TILE_SIZE); | |
| 123 | + | |
| 124 | + Raster srcRaster = paintCtxt.getRaster(tx, ty, tw, th); | |
| 125 | + if ((srcRaster.getMinX() != 0) || (srcRaster.getMinY() != 0)) { | |
| 126 | + srcRaster = srcRaster.createTranslatedChild(0, 0); | |
| 127 | + } | |
| 128 | + if (lastRas != srcRaster) { | |
| 129 | + lastRas = srcRaster; | |
| 130 | + context.lastRaster = new WeakReference(lastRas); | |
| 131 | + // REMIND: This will fail for a non-Writable raster! | |
| 132 | + BufferedImage bImg = | |
| 133 | + new BufferedImage(paintModel, | |
| 134 | + (WritableRaster) srcRaster, | |
| 135 | + paintModel.isAlphaPremultiplied(), | |
| 136 | + null); | |
| 137 | + srcData = BufImgSurfaceData.createData(bImg); | |
| 138 | + context.lastData = new WeakReference(srcData); | |
| 139 | + context.lastMask = null; | |
| 140 | + context.lastBlit = null; | |
| 141 | + } | |
| 142 | + | |
| 143 | + if (atile == null) { | |
| 144 | + if (context.lastBlit == null) { | |
| 145 | + CompositeType comptype = sg.imageComp; | |
| 146 | + if (CompositeType.SrcOverNoEa.equals(comptype) && | |
| 147 | + paintModel.getTransparency() == Transparency.OPAQUE) | |
| 148 | + { | |
| 149 | + comptype = CompositeType.SrcNoEa; | |
| 150 | + } | |
| 151 | + context.lastBlit = | |
| 152 | + Blit.getFromCache(srcData.getSurfaceType(), | |
| 153 | + comptype, | |
| 154 | + dstData.getSurfaceType()); | |
| 155 | + } | |
| 156 | + context.lastBlit.Blit(srcData, dstData, | |
| 157 | + sg.composite, null, | |
| 158 | + 0, 0, tx, ty, tw, th); | |
| 159 | + } else { | |
| 160 | + if (context.lastMask == null) { | |
| 161 | + CompositeType comptype = sg.imageComp; | |
| 162 | + if (CompositeType.SrcOverNoEa.equals(comptype) && | |
| 163 | + paintModel.getTransparency() == Transparency.OPAQUE) | |
| 164 | + { | |
| 165 | + comptype = CompositeType.SrcNoEa; | |
| 166 | + } | |
| 167 | + context.lastMask = | |
| 168 | + MaskBlit.getFromCache(srcData.getSurfaceType(), | |
| 169 | + comptype, | |
| 170 | + dstData.getSurfaceType()); | |
| 171 | + } | |
| 172 | + | |
| 173 | + int toff = offset + rely * tilesize + relx; | |
| 174 | + context.lastMask.MaskBlit(srcData, dstData, | |
| 175 | + sg.composite, null, | |
| 176 | + 0, 0, tx, ty, tw, th, | |
| 177 | + atile, toff, tilesize); | |
| 178 | + } | |
| 179 | + } | |
| 180 | + } | |
| 181 | + } | |
| 182 | + | |
| 183 | + public void skipTile(Object context, int x, int y) { | |
| 184 | + return; | |
| 185 | + } | |
| 186 | + | |
| 187 | + public void endSequence(Object ctx) { | |
| 188 | + TileContext context = (TileContext) ctx; | |
| 189 | + if (context.paintCtxt != null) { | |
| 190 | + context.paintCtxt.dispose(); | |
| 191 | + } | |
| 192 | + synchronized (AlphaPaintPipe.class) { | |
| 193 | + if (context.lastData != null) { | |
| 194 | + cachedLastRaster = context.lastRaster; | |
| 195 | + if (cachedLastColorModel == null || | |
| 196 | + cachedLastColorModel.get() != context.paintModel) | |
| 197 | + { | |
| 198 | + // Avoid creating new WeakReference if possible | |
| 199 | + cachedLastColorModel = | |
| 200 | + new WeakReference(context.paintModel); | |
| 201 | + } | |
| 202 | + cachedLastData = context.lastData; | |
| 203 | + } | |
| 204 | + } | |
| 205 | + } | |
| 206 | +} | |