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| 1 | /* | ||
| 2 | * Copyright (c) 2000, 2008, 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.awt.image; | ||
| 27 | |||
| 28 | import java.awt.AlphaComposite; | ||
| 29 | import java.awt.Color; | ||
| 30 | import java.awt.Component; | ||
| 31 | import java.awt.Font; | ||
| 32 | import java.awt.Graphics2D; | ||
| 33 | import java.awt.GraphicsConfiguration; | ||
| 34 | import java.awt.ImageCapabilities; | ||
| 35 | import java.awt.Transparency; | ||
| 36 | import java.awt.image.BufferedImage; | ||
| 37 | import java.awt.image.ImageObserver; | ||
| 38 | import java.awt.image.VolatileImage; | ||
| 39 | import sun.java2d.SunGraphics2D; | ||
| 40 | import sun.java2d.SurfaceManagerFactory; | ||
| 41 | import sun.java2d.DestSurfaceProvider; | ||
| 42 | import sun.java2d.Surface; | ||
| 43 | import static sun.java2d.pipe.hw.AccelSurface.*; | ||
| 44 | |||
| 45 | /** | ||
| 46 | * This class is the base implementation of the VolatileImage | ||
| 47 | * abstract class. The class implements most of the standard Image | ||
| 48 | * methods (width, height, etc.) but delegates all surface management | ||
| 49 | * issues to a platform-specific VolatileSurfaceManager. When a new instance | ||
| 50 | * of SunVolatileImage is created, it automatically creates an | ||
| 51 | * appropriate VolatileSurfaceManager for the GraphicsConfiguration | ||
| 52 | * under which this SunVolatileImage was created. | ||
| 53 | */ | ||
| 54 | public class SunVolatileImage extends VolatileImage | ||
| 55 | implements DestSurfaceProvider | ||
| 56 | { | ||
| 57 | |||
| 58 | protected VolatileSurfaceManager volSurfaceManager; | ||
| 59 | protected Component comp; | ||
| 60 | private GraphicsConfiguration graphicsConfig; | ||
| 61 | private Font defaultFont; | ||
| 62 | private int width, height; | ||
| 63 | private int forcedAccelSurfaceType; | ||
| 64 | |||
| 65 | protected SunVolatileImage(Component comp, | ||
| 66 | GraphicsConfiguration graphicsConfig, | ||
| 67 | int width, int height, Object context, | ||
| 68 | int transparency, ImageCapabilities caps, | ||
| 69 | int accType) | ||
| 70 | { | ||
| 71 | this.comp = comp; | ||
| 72 | this.graphicsConfig = graphicsConfig; | ||
| 73 | this.width = width; | ||
| 74 | this.height = height; | ||
| 75 | this.forcedAccelSurfaceType = accType; | ||
| 76 | if (!(transparency == Transparency.OPAQUE || | ||
| 77 | transparency == Transparency.BITMASK || | ||
| 78 | transparency == Transparency.TRANSLUCENT)) | ||
| 79 | { | ||
| 80 | throw new IllegalArgumentException("Unknown transparency type:" + | ||
| 81 | transparency); | ||
| 82 | } | ||
| 83 | this.transparency = transparency; | ||
| 84 | this.volSurfaceManager = createSurfaceManager(context, caps); | ||
| 85 | SurfaceManager.setManager(this, volSurfaceManager); | ||
| 86 | |||
| 87 | // post-construction initialization of the surface manager | ||
| 88 | volSurfaceManager.initialize(); | ||
| 89 | // clear the background | ||
| 90 | volSurfaceManager.initContents(); | ||
| 91 | } | ||
| 92 | |||
| 93 | private SunVolatileImage(Component comp, | ||
| 94 | GraphicsConfiguration graphicsConfig, | ||
| 95 | int width, int height, Object context, | ||
| 96 | ImageCapabilities caps) | ||
| 97 | { | ||
| 98 | this(comp, graphicsConfig, | ||
| 99 | width, height, context, Transparency.OPAQUE, caps, UNDEFINED); | ||
| 100 | } | ||
| 101 | |||
| 102 | public SunVolatileImage(Component comp, int width, int height) { | ||
| 103 | this(comp, width, height, null); | ||
| 104 | } | ||
| 105 | |||
| 106 | public SunVolatileImage(Component comp, | ||
| 107 | int width, int height, Object context) | ||
| 108 | { | ||
| 109 | this(comp, comp.getGraphicsConfiguration(), | ||
| 110 | width, height, context, null); | ||
| 111 | } | ||
| 112 | |||
| 113 | public SunVolatileImage(GraphicsConfiguration graphicsConfig, | ||
| 114 | int width, int height, int transparency, | ||
| 115 | ImageCapabilities caps) | ||
| 116 | { | ||
| 117 | this(null, graphicsConfig, width, height, null, transparency, | ||
| 118 | caps, UNDEFINED); | ||
| 119 | } | ||
| 120 | |||
| 121 | public int getWidth() { | ||
| 122 | return width; | ||
| 123 | } | ||
| 124 | |||
| 125 | public int getHeight() { | ||
| 126 | return height; | ||
| 127 | } | ||
| 128 | |||
| 129 | public GraphicsConfiguration getGraphicsConfig() { | ||
| 130 | return graphicsConfig; | ||
| 131 | } | ||
| 132 | |||
| 133 | public void updateGraphicsConfig() { | ||
| 134 | // If this VImage is associated with a Component, get an updated | ||
| 135 | // graphicsConfig from that component. Otherwise, keep the one | ||
| 136 | // that we were created with | ||
| 137 | if (comp != null) { | ||
| 138 | GraphicsConfiguration gc = comp.getGraphicsConfiguration(); | ||
| 139 | if (gc != null) { | ||
| 140 | // Could potentially be null in some failure situations; | ||
| 141 | // better to keep the old non-null value around than to | ||
| 142 | // set graphicsConfig to null | ||
| 143 | graphicsConfig = gc; | ||
| 144 | } | ||
| 145 | } | ||
| 146 | } | ||
| 147 | |||
| 148 | public Component getComponent() { | ||
| 149 | return comp; | ||
| 150 | } | ||
| 151 | |||
| 152 | public int getForcedAccelSurfaceType() { | ||
| 153 | return forcedAccelSurfaceType; | ||
| 154 | } | ||
| 155 | |||
| 156 | protected VolatileSurfaceManager createSurfaceManager(Object context, | ||
| 157 | ImageCapabilities caps) | ||
| 158 | { | ||
| 159 | /** | ||
| 160 | * Platform-specific SurfaceManagerFactories will return a | ||
| 161 | * manager suited to acceleration on each platform. But if | ||
| 162 | * the user is asking for a VolatileImage from a BufferedImageGC, | ||
| 163 | * then we need to return the appropriate unaccelerated manager. | ||
| 164 | * Note: this could change in the future; if some platform would | ||
| 165 | * like to accelerate BIGC volatile images, then this special-casing | ||
| 166 | * of the BIGC graphicsConfig should live in platform-specific | ||
| 167 | * code instead. | ||
| 168 | * We do the same for a Printer Device, and if user requested an | ||
| 169 | * unaccelerated VolatileImage by passing the capabilities object. | ||
| 170 | */ | ||
| 171 | if (graphicsConfig instanceof BufferedImageGraphicsConfig || | ||
| 172 | graphicsConfig instanceof sun.print.PrinterGraphicsConfig || | ||
| 173 | (caps != null && !caps.isAccelerated())) | ||
| 174 | { | ||
| 175 | return new BufImgVolatileSurfaceManager(this, context); | ||
| 176 | } | ||
| 177 | SurfaceManagerFactory smf = SurfaceManagerFactory.getInstance(); | ||
| 178 | return smf.createVolatileManager(this, context); | ||
| 179 | } | ||
| 180 | |||
| 181 | private Color getForeground() { | ||
| 182 | if (comp != null) { | ||
| 183 | return comp.getForeground(); | ||
| 184 | } else { | ||
| 185 | return Color.black; | ||
| 186 | } | ||
| 187 | } | ||
| 188 | |||
| 189 | private Color getBackground() { | ||
| 190 | if (comp != null) { | ||
| 191 | return comp.getBackground(); | ||
| 192 | } else { | ||
| 193 | return Color.white; | ||
| 194 | } | ||
| 195 | } | ||
| 196 | |||
| 197 | private Font getFont() { | ||
| 198 | if (comp != null) { | ||
| 199 | return comp.getFont(); | ||
| 200 | } else { | ||
| 201 | if (defaultFont == null) { | ||
| 202 | defaultFont = new Font("Dialog", Font.PLAIN, 12); | ||
| 203 | } | ||
| 204 | return defaultFont; | ||
| 205 | } | ||
| 206 | } | ||
| 207 | |||
| 208 | public Graphics2D createGraphics() { | ||
| 209 | return new SunGraphics2D(volSurfaceManager.getPrimarySurfaceData(), | ||
| 210 | getForeground(), | ||
| 211 | getBackground(), | ||
| 212 | getFont()); | ||
| 213 | } | ||
| 214 | |||
| 215 | // Image method implementations | ||
| 216 | public Object getProperty(String name, ImageObserver observer) { | ||
| 217 | if (name == null) { | ||
| 218 | throw new NullPointerException("null property name is not allowed"); | ||
| 219 | } | ||
| 220 | return java.awt.Image.UndefinedProperty; | ||
| 221 | } | ||
| 222 | |||
| 223 | public int getWidth(ImageObserver observer) { | ||
| 224 | return getWidth(); | ||
| 225 | } | ||
| 226 | |||
| 227 | public int getHeight(ImageObserver observer) { | ||
| 228 | return getHeight(); | ||
| 229 | } | ||
| 230 | |||
| 231 | /** | ||
| 232 | * This method creates a BufferedImage intended for use as a "snapshot" | ||
| 233 | * or a backup surface. | ||
| 234 | */ | ||
| 235 | public BufferedImage getBackupImage() { | ||
| 236 | return graphicsConfig.createCompatibleImage(getWidth(), getHeight(), | ||
| 237 | getTransparency()); | ||
| 238 | } | ||
| 239 | |||
| 240 | public BufferedImage getSnapshot() { | ||
| 241 | BufferedImage bi = getBackupImage(); | ||
| 242 | Graphics2D g = bi.createGraphics(); | ||
| 243 | g.setComposite(AlphaComposite.Src); | ||
| 244 | g.drawImage(this, 0, 0, null); | ||
| 245 | g.dispose(); | ||
| 246 | return bi; | ||
| 247 | } | ||
| 248 | |||
| 249 | public int validate(GraphicsConfiguration gc) { | ||
| 250 | return volSurfaceManager.validate(gc); | ||
| 251 | } | ||
| 252 | |||
| 253 | public boolean contentsLost() { | ||
| 254 | return volSurfaceManager.contentsLost(); | ||
| 255 | } | ||
| 256 | |||
| 257 | public ImageCapabilities getCapabilities() { | ||
| 258 | return volSurfaceManager.getCapabilities(graphicsConfig); | ||
| 259 | } | ||
| 260 | |||
| 261 | /** | ||
| 262 | * {@inheritDoc} | ||
| 263 | * | ||
| 264 | * @see sun.java2d.DestSurfaceProvider#getDestSurface | ||
| 265 | */ | ||
| 266 | @Override | ||
| 267 | public Surface getDestSurface() { | ||
| 268 | return volSurfaceManager.getPrimarySurfaceData(); | ||
| 269 | } | ||
| 270 | } | ||