CImage.java revision 15526:dc69f25a52aa
1/* 2 * Copyright (c) 2011, 2012, 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 26package sun.lwawt.macosx; 27 28import java.awt.*; 29import java.awt.geom.Dimension2D; 30import java.awt.image.*; 31 32import java.util.Arrays; 33import java.util.List; 34import java.awt.image.MultiResolutionImage; 35import sun.awt.image.MultiResolutionCachedImage; 36 37import sun.awt.image.SunWritableRaster; 38 39public class CImage extends CFRetainedResource { 40 private static native long nativeCreateNSImageFromArray(int[] buffer, int w, int h); 41 private static native long nativeCreateNSImageFromBytes(byte[] buffer); 42 private static native long nativeCreateNSImageFromArrays(int[][] buffers, int w[], int h[]); 43 private static native long nativeCreateNSImageFromFileContents(String file); 44 private static native long nativeCreateNSImageOfFileFromLaunchServices(String file); 45 private static native long nativeCreateNSImageFromImageName(String name); 46 private static native long nativeCreateNSImageFromIconSelector(int selector); 47 private static native byte[] nativeGetPlatformImageBytes(int[] buffer, int w, int h); 48 private static native void nativeCopyNSImageIntoArray(long image, int[] buffer, int sw, int sh, int dw, int dh); 49 private static native Dimension2D nativeGetNSImageSize(long image); 50 private static native void nativeSetNSImageSize(long image, double w, double h); 51 private static native void nativeResizeNSImageRepresentations(long image, double w, double h); 52 private static native Dimension2D[] nativeGetNSImageRepresentationSizes(long image, double w, double h); 53 54 static Creator creator = new Creator(); 55 static Creator getCreator() { 56 return creator; 57 } 58 59 // This is used to create a CImage that represents the icon of the given file. 60 public static Image createImageOfFile(String file, int width, int height) { 61 return getCreator().createImageOfFile(file, width, height); 62 } 63 64 public static Image createSystemImageFromSelector(String iconSelector, 65 int width, int height) { 66 return getCreator().createSystemImageFromSelector(iconSelector, width, height); 67 } 68 69 public static Image createImageFromFile(String file, double width, double height) { 70 return getCreator().createImageFromFile(file, width, height); 71 } 72 73 // This is used to create a CImage from a Image 74 public static CImage createFromImage(final Image image) { 75 return getCreator().createFromImage(image); 76 } 77 78 public static class Creator { 79 Creator() { } 80 81 // This is used to create a CImage with an NSImage pointer. It MUST be a CFRetained 82 // NSImage, and the CImage takes ownership of the non-GC retain. If callers need the 83 // NSImage themselves, they MUST call retain on the NSImage themselves. 84 public Image createImageUsingNativeSize(final long image) { 85 if (image == 0) return null; 86 final Dimension2D size = nativeGetNSImageSize(image); 87 return createImage(image, size.getWidth(), size.getHeight()); 88 } 89 90 // the width and height passed in as a parameter could differ than the width and the height of the NSImage (image), in that case, the image will be scaled 91 Image createImage(long image, double width, double height) { 92 if (image == 0) throw new Error("Unable to instantiate CImage with null native image reference."); 93 return createImageWithSize(image, width, height); 94 } 95 96 public Image createImageWithSize(final long image, final double width, final double height) { 97 final CImage img = new CImage(image); 98 img.resize(width, height); 99 return img.toImage(); 100 } 101 102 // This is used to create a CImage that represents the icon of the given file. 103 public Image createImageOfFile(final String file, final int width, final int height) { 104 return createImage(nativeCreateNSImageOfFileFromLaunchServices(file), width, height); 105 } 106 107 public Image createImageFromFile(final String file, final double width, final double height) { 108 final long image = nativeCreateNSImageFromFileContents(file); 109 nativeSetNSImageSize(image, width, height); 110 return createImage(image, width, height); 111 } 112 113 public Image createSystemImageFromSelector(final String iconSelector, final int width, final int height) { 114 return createImage(nativeCreateNSImageFromIconSelector(getSelectorAsInt(iconSelector)), width, height); 115 } 116 117 public Image createImageFromName(final String name, final int width, final int height) { 118 return createImage(nativeCreateNSImageFromImageName(name), width, height); 119 } 120 121 public Image createImageFromName(final String name) { 122 return createImageUsingNativeSize(nativeCreateNSImageFromImageName(name)); 123 } 124 125 private static int[] imageToArray(Image image, boolean prepareImage) { 126 if (image == null) return null; 127 128 if (prepareImage && !(image instanceof BufferedImage)) { 129 final MediaTracker mt = new MediaTracker(new Label()); 130 final int id = 0; 131 mt.addImage(image, id); 132 133 try { 134 mt.waitForID(id); 135 } catch (InterruptedException e) { 136 return null; 137 } 138 139 if (mt.isErrorID(id)) { 140 return null; 141 } 142 } 143 144 int w = image.getWidth(null); 145 int h = image.getHeight(null); 146 147 if (w < 0 || h < 0) { 148 return null; 149 } 150 151 BufferedImage bimg = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB_PRE); 152 Graphics2D g2 = bimg.createGraphics(); 153 g2.setComposite(AlphaComposite.Src); 154 g2.drawImage(image, 0, 0, null); 155 g2.dispose(); 156 157 return ((DataBufferInt)bimg.getRaster().getDataBuffer()).getData(); 158 } 159 160 public byte[] getPlatformImageBytes(final Image image) { 161 int[] buffer = imageToArray(image, false); 162 163 if (buffer == null) { 164 return null; 165 } 166 167 return nativeGetPlatformImageBytes(buffer, image.getWidth(null), image.getHeight(null)); 168 } 169 170 /** 171 * Translates a byte array which contains platform-specific image data in the given format into an Image. 172 */ 173 public Image createImageFromPlatformImageBytes(final byte[] buffer) { 174 return createImageUsingNativeSize(nativeCreateNSImageFromBytes(buffer)); 175 } 176 177 // This is used to create a CImage from a Image 178 public CImage createFromImage(final Image image) { 179 return createFromImage(image, true); 180 } 181 182 public CImage createFromImageImmediately(final Image image) { 183 return createFromImage(image, false); 184 } 185 186 // This is used to create a CImage from a Image 187 private CImage createFromImage(final Image image, final boolean prepareImage) { 188 if (image instanceof MultiResolutionImage) { 189 List<Image> resolutionVariants 190 = ((MultiResolutionImage) image).getResolutionVariants(); 191 return createFromImages(resolutionVariants, prepareImage); 192 } 193 194 int[] buffer = imageToArray(image, prepareImage); 195 if (buffer == null) { 196 return null; 197 } 198 return new CImage(nativeCreateNSImageFromArray(buffer, image.getWidth(null), image.getHeight(null))); 199 } 200 201 public CImage createFromImages(final List<Image> images) { 202 return createFromImages(images, true); 203 } 204 205 private CImage createFromImages(final List<Image> images, final boolean prepareImage) { 206 if (images == null || images.isEmpty()) { 207 return null; 208 } 209 210 int num = images.size(); 211 212 int[][] buffers = new int[num][]; 213 int[] w = new int[num]; 214 int[] h = new int[num]; 215 216 num = 0; 217 218 for (final Image img : images) { 219 buffers[num] = imageToArray(img, prepareImage); 220 if (buffers[num] == null) { 221 // Unable to process the image 222 continue; 223 } 224 w[num] = img.getWidth(null); 225 h[num] = img.getHeight(null); 226 num++; 227 } 228 229 if (num == 0) { 230 return null; 231 } 232 233 return new CImage(nativeCreateNSImageFromArrays( 234 Arrays.copyOf(buffers, num), 235 Arrays.copyOf(w, num), 236 Arrays.copyOf(h, num))); 237 } 238 239 static int getSelectorAsInt(final String fromString) { 240 final byte[] b = fromString.getBytes(); 241 final int len = Math.min(b.length, 4); 242 int result = 0; 243 for (int i = 0; i < len; i++) { 244 if (i > 0) result <<= 8; 245 result |= (b[i] & 0xff); 246 } 247 return result; 248 } 249 } 250 251 CImage(long nsImagePtr) { 252 super(nsImagePtr, true); 253 } 254 255 /** @return A MultiResolution image created from nsImagePtr, or null. */ 256 private Image toImage() { 257 if (ptr == 0) return null; 258 259 final Dimension2D size = nativeGetNSImageSize(ptr); 260 final int w = (int)size.getWidth(); 261 final int h = (int)size.getHeight(); 262 263 Dimension2D[] sizes 264 = nativeGetNSImageRepresentationSizes(ptr, 265 size.getWidth(), size.getHeight()); 266 267 return sizes == null || sizes.length < 2 ? 268 new MultiResolutionCachedImage(w, h, (width, height) 269 -> toImage(w, h, width, height)) 270 : new MultiResolutionCachedImage(w, h, sizes, (width, height) 271 -> toImage(w, h, width, height)); 272 } 273 274 private BufferedImage toImage(int srcWidth, int srcHeight, int dstWidth, int dstHeight) { 275 final BufferedImage bimg = new BufferedImage(dstWidth, dstHeight, BufferedImage.TYPE_INT_ARGB_PRE); 276 final DataBufferInt dbi = (DataBufferInt)bimg.getRaster().getDataBuffer(); 277 final int[] buffer = SunWritableRaster.stealData(dbi, 0); 278 nativeCopyNSImageIntoArray(ptr, buffer, srcWidth, srcHeight, dstWidth, dstHeight); 279 SunWritableRaster.markDirty(dbi); 280 return bimg; 281 } 282 283 /** If nsImagePtr != 0 then scale this NSImage. @return *this* */ 284 CImage resize(final double w, final double h) { 285 if (ptr != 0) nativeSetNSImageSize(ptr, w, h); 286 return this; 287 } 288 289 void resizeRepresentations(double w, double h) { 290 if (ptr != 0) nativeResizeNSImageRepresentations(ptr, w, h); 291 } 292} 293