J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1997-2002 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any 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 | } |