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| 1 | /* | ||
| 2 | * Copyright (c) 1997, 2005, 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.AWTException; | ||
| 29 | import java.awt.Component; | ||
| 30 | import java.awt.Graphics2D; | ||
| 31 | import java.awt.GraphicsConfiguration; | ||
| 32 | import java.awt.GraphicsDevice; | ||
| 33 | import java.awt.ImageCapabilities; | ||
| 34 | import java.awt.Rectangle; | ||
| 35 | import java.awt.Transparency; | ||
| 36 | import java.awt.geom.AffineTransform; | ||
| 37 | import java.awt.image.BufferedImage; | ||
| 38 | import java.awt.image.ColorModel; | ||
| 39 | import java.awt.image.DirectColorModel; | ||
| 40 | import java.awt.image.Raster; | ||
| 41 | import java.awt.image.VolatileImage; | ||
| 42 | import java.awt.image.WritableRaster; | ||
| 43 | |||
| 44 | public class BufferedImageGraphicsConfig | ||
| 45 | extends GraphicsConfiguration | ||
| 46 | { | ||
| 47 | private static final int numconfigs = BufferedImage.TYPE_BYTE_BINARY; | ||
| 48 | private static BufferedImageGraphicsConfig configs[] = | ||
| 49 | new BufferedImageGraphicsConfig[numconfigs]; | ||
| 50 | |||
| 51 | public static BufferedImageGraphicsConfig getConfig(BufferedImage bImg) { | ||
| 52 | BufferedImageGraphicsConfig ret; | ||
| 53 | int type = bImg.getType(); | ||
| 54 | if (type > 0 && type < numconfigs) { | ||
| 55 | ret = configs[type]; | ||
| 56 | if (ret != null) { | ||
| 57 | return ret; | ||
| 58 | } | ||
| 59 | } | ||
| 60 | ret = new BufferedImageGraphicsConfig(bImg, null); | ||
| 61 | if (type > 0 && type < numconfigs) { | ||
| 62 | configs[type] = ret; | ||
| 63 | } | ||
| 64 | return ret; | ||
| 65 | } | ||
| 66 | |||
| 67 | GraphicsDevice gd; | ||
| 68 | ColorModel model; | ||
| 69 | Raster raster; | ||
| 70 | int width, height; | ||
| 71 | |||
| 72 | public BufferedImageGraphicsConfig(BufferedImage bufImg, Component comp) { | ||
| 73 | if (comp == null) { | ||
| 74 | this.gd = new BufferedImageDevice(this); | ||
| 75 | } else { | ||
| 76 | Graphics2D g2d = (Graphics2D)comp.getGraphics(); | ||
| 77 | this.gd = g2d.getDeviceConfiguration().getDevice(); | ||
| 78 | } | ||
| 79 | this.model = bufImg.getColorModel(); | ||
| 80 | this.raster = bufImg.getRaster().createCompatibleWritableRaster(1, 1); | ||
| 81 | this.width = bufImg.getWidth(); | ||
| 82 | this.height = bufImg.getHeight(); | ||
| 83 | } | ||
| 84 | |||
| 85 | /** | ||
| 86 | * Return the graphics device associated with this configuration. | ||
| 87 | */ | ||
| 88 | public GraphicsDevice getDevice() { | ||
| 89 | return gd; | ||
| 90 | } | ||
| 91 | |||
| 92 | /** | ||
| 93 | * Returns a BufferedImage with channel layout and color model | ||
| 94 | * compatible with this graphics configuration. This method | ||
| 95 | * has nothing to do with memory-mapping | ||
| 96 | * a device. This BufferedImage has | ||
| 97 | * a layout and color model | ||
| 98 | * that is closest to this native device configuration and thus | ||
| 99 | * can be optimally blitted to this device. | ||
| 100 | */ | ||
| 101 | public BufferedImage createCompatibleImage(int width, int height) { | ||
| 102 | WritableRaster wr = raster.createCompatibleWritableRaster(width, height); | ||
| 103 | return new BufferedImage(model, wr, model.isAlphaPremultiplied(), null); | ||
| 104 | } | ||
| 105 | |||
| 106 | /** | ||
| 107 | * Returns the color model associated with this configuration. | ||
| 108 | */ | ||
| 109 | public ColorModel getColorModel() { | ||
| 110 | return model; | ||
| 111 | } | ||
| 112 | |||
| 113 | /** | ||
| 114 | * Returns the color model associated with this configuration that | ||
| 115 | * supports the specified transparency. | ||
| 116 | */ | ||
| 117 | public ColorModel getColorModel(int transparency) { | ||
| 118 | |||
| 119 | if (model.getTransparency() == transparency) { | ||
| 120 | return model; | ||
| 121 | } | ||
| 122 | switch (transparency) { | ||
| 123 | case Transparency.OPAQUE: | ||
| 124 | return new DirectColorModel(24, 0xff0000, 0xff00, 0xff); | ||
| 125 | case Transparency.BITMASK: | ||
| 126 | return new DirectColorModel(25, 0xff0000, 0xff00, 0xff, 0x1000000); | ||
| 127 | case Transparency.TRANSLUCENT: | ||
| 128 | return ColorModel.getRGBdefault(); | ||
| 129 | default: | ||
| 130 | return null; | ||
| 131 | } | ||
| 132 | } | ||
| 133 | |||
| 134 | /** | ||
| 135 | * Returns the default Transform for this configuration. This | ||
| 136 | * Transform is typically the Identity transform for most normal | ||
| 137 | * screens. Device coordinates for screen and printer devices will | ||
| 138 | * have the origin in the upper left-hand corner of the target region of | ||
| 139 | * the device, with X coordinates | ||
| 140 | * increasing to the right and Y coordinates increasing downwards. | ||
| 141 | * For image buffers, this Transform will be the Identity transform. | ||
| 142 | */ | ||
| 143 | public AffineTransform getDefaultTransform() { | ||
| 144 | return new AffineTransform(); | ||
| 145 | } | ||
| 146 | |||
| 147 | /** | ||
| 148 | * | ||
| 149 | * Returns a Transform that can be composed with the default Transform | ||
| 150 | * of a Graphics2D so that 72 units in user space will equal 1 inch | ||
| 151 | * in device space. | ||
| 152 | * Given a Graphics2D, g, one can reset the transformation to create | ||
| 153 | * such a mapping by using the following pseudocode: | ||
| 154 | * <pre> | ||
| 155 | * GraphicsConfiguration gc = g.getGraphicsConfiguration(); | ||
| 156 | * | ||
| 157 | * g.setTransform(gc.getDefaultTransform()); | ||
| 158 | * g.transform(gc.getNormalizingTransform()); | ||
| 159 | * </pre> | ||
| 160 | * Note that sometimes this Transform will be identity (e.g. for | ||
| 161 | * printers or metafile output) and that this Transform is only | ||
| 162 | * as accurate as the information supplied by the underlying system. | ||
| 163 | * For image buffers, this Transform will be the Identity transform, | ||
| 164 | * since there is no valid distance measurement. | ||
| 165 | */ | ||
| 166 | public AffineTransform getNormalizingTransform() { | ||
| 167 | return new AffineTransform(); | ||
| 168 | } | ||
| 169 | |||
| 170 | public Rectangle getBounds() { | ||
| 171 | return new Rectangle(0, 0, width, height); | ||
| 172 | } | ||
| 173 | } | ||