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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 | } | ||