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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/java/awt/image/BufferedImage.java | |
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Diffstat (limited to 'libjava/classpath/java/awt/image/BufferedImage.java')
-rw-r--r-- | libjava/classpath/java/awt/image/BufferedImage.java | 839 |
1 files changed, 839 insertions, 0 deletions
diff --git a/libjava/classpath/java/awt/image/BufferedImage.java b/libjava/classpath/java/awt/image/BufferedImage.java new file mode 100644 index 000000000..094c71dd1 --- /dev/null +++ b/libjava/classpath/java/awt/image/BufferedImage.java @@ -0,0 +1,839 @@ +/* BufferedImage.java -- + Copyright (C) 2000, 2002, 2003, 2004, 2005, 2006, Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import gnu.java.awt.Buffers; +import gnu.java.awt.ClasspathGraphicsEnvironment; +import gnu.java.awt.ComponentDataBlitOp; +import gnu.java.lang.CPStringBuilder; + +import java.awt.Graphics; +import java.awt.Graphics2D; +import java.awt.GraphicsEnvironment; +import java.awt.Image; +import java.awt.Point; +import java.awt.Rectangle; +import java.awt.Transparency; +import java.awt.color.ColorSpace; +import java.util.Hashtable; +import java.util.Vector; + +/** + * A buffered image always starts at coordinates (0, 0). + * + * The buffered image is not subdivided into multiple tiles. Instead, + * the image consists of one large tile (0,0) with the width and + * height of the image. This tile is always considered to be checked + * out. + * + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + */ +public class BufferedImage extends Image + implements WritableRenderedImage, Transparency +{ + public static final int TYPE_CUSTOM = 0, + TYPE_INT_RGB = 1, + TYPE_INT_ARGB = 2, + TYPE_INT_ARGB_PRE = 3, + TYPE_INT_BGR = 4, + TYPE_3BYTE_BGR = 5, + TYPE_4BYTE_ABGR = 6, + TYPE_4BYTE_ABGR_PRE = 7, + TYPE_USHORT_565_RGB = 8, + TYPE_USHORT_555_RGB = 9, + TYPE_BYTE_GRAY = 10, + TYPE_USHORT_GRAY = 11, + TYPE_BYTE_BINARY = 12, + TYPE_BYTE_INDEXED = 13; + + /** + * Vector of TileObservers (or null) + */ + Vector<TileObserver> tileObservers; + + /** + * The image's WritableRaster + */ + WritableRaster raster; + + /** + * The associated ColorModel + */ + ColorModel colorModel; + + /** + * The image's properties (or null) + */ + Hashtable properties; + + /** + * Whether alpha is premultiplied + */ + boolean isPremultiplied; + + /** + * The predefined type, if any. + */ + int type; + + /** + * Creates a new <code>BufferedImage</code> with the specified width, height + * and type. Valid <code>type</code> values are: + * + * <ul> + * <li>{@link #TYPE_INT_RGB}</li> + * <li>{@link #TYPE_INT_ARGB}</li> + * <li>{@link #TYPE_INT_ARGB_PRE}</li> + * <li>{@link #TYPE_INT_BGR}</li> + * <li>{@link #TYPE_3BYTE_BGR}</li> + * <li>{@link #TYPE_4BYTE_ABGR}</li> + * <li>{@link #TYPE_4BYTE_ABGR_PRE}</li> + * <li>{@link #TYPE_USHORT_565_RGB}</li> + * <li>{@link #TYPE_USHORT_555_RGB}</li> + * <li>{@link #TYPE_BYTE_GRAY}</li> + * <li>{@link #TYPE_USHORT_GRAY}</li> + * <li>{@link #TYPE_BYTE_BINARY}</li> + * <li>{@link #TYPE_BYTE_INDEXED}</li> + * </ul> + * + * @param width the width (must be > 0). + * @param height the height (must be > 0). + * @param type the image type (see the list of valid types above). + * + * @throws IllegalArgumentException if <code>width</code> or + * <code>height</code> is less than or equal to zero. + * @throws IllegalArgumentException if <code>type</code> is not one of the + * specified values. + */ + public BufferedImage(int width, int height, int type) + { + SampleModel sm = null; + ColorModel cm = null; + boolean premultiplied = (type == BufferedImage.TYPE_INT_ARGB_PRE + || type == BufferedImage.TYPE_4BYTE_ABGR_PRE); + + switch( type ) + { + case BufferedImage.TYPE_INT_RGB: + sm = new SinglePixelPackedSampleModel( DataBuffer.TYPE_INT, + width, height, + new int[]{ 0x00FF0000, + 0x0000FF00, + 0x000000FF } ) ; + cm = new DirectColorModel( 24, 0xff0000, 0xff00, 0xff ); + break; + + case BufferedImage.TYPE_3BYTE_BGR: + sm = new PixelInterleavedSampleModel( DataBuffer.TYPE_BYTE, + width, height, + 3, width * 3, + new int[]{ 2, 1, 0 } ); + cm = new ComponentColorModel(ColorSpace.getInstance(ColorSpace.CS_sRGB), + false, false, + BufferedImage.OPAQUE, + DataBuffer.TYPE_BYTE); + break; + + case BufferedImage.TYPE_INT_ARGB: + case BufferedImage.TYPE_INT_ARGB_PRE: + sm = new SinglePixelPackedSampleModel( DataBuffer.TYPE_INT, + width, height, + new int[]{ 0x00FF0000, + 0x0000FF00, + 0x000000FF, + 0xFF000000 } ); + if (premultiplied) + cm = new DirectColorModel( ColorSpace.getInstance(ColorSpace.CS_sRGB), + 32, 0xff0000, 0xff00, 0xff, 0xff000000, + true, + Buffers.smallestAppropriateTransferType(32)); + else + cm = new DirectColorModel( 32, 0xff0000, 0xff00, 0xff, 0xff000000 ); + + break; + + case BufferedImage.TYPE_4BYTE_ABGR: + case BufferedImage.TYPE_4BYTE_ABGR_PRE: + sm = new PixelInterleavedSampleModel(DataBuffer.TYPE_BYTE, + width, height, + 4, 4*width, + new int[]{3, 2, 1, 0}); + cm = new ComponentColorModel(ColorSpace.getInstance(ColorSpace.CS_sRGB), + true, premultiplied, + BufferedImage.TRANSLUCENT, + DataBuffer.TYPE_BYTE); + break; + + case BufferedImage.TYPE_INT_BGR: + sm = new SinglePixelPackedSampleModel( DataBuffer.TYPE_INT, + width, height, + new int[]{ 0x000000FF, + 0x0000FF00, + 0x00FF0000 } ) ; + cm = new DirectColorModel( 24, 0xff, 0xff00, 0xff0000 ); + break; + + case BufferedImage.TYPE_USHORT_565_RGB: + sm = new SinglePixelPackedSampleModel( DataBuffer.TYPE_USHORT, + width, height, + new int[]{ 0xF800, + 0x7E0, + 0x1F } ) ; + cm = new DirectColorModel( 16, 0xF800, 0x7E0, 0x1F ); + break; + + case BufferedImage.TYPE_USHORT_555_RGB: + sm = new SinglePixelPackedSampleModel( DataBuffer.TYPE_USHORT, + width, height, + new int[]{ 0x7C00, + 0x3E0, + 0x1F } ) ; + cm = new DirectColorModel( 15, 0x7C00, 0x3E0, 0x1F ); + break; + + case BufferedImage.TYPE_BYTE_INDEXED: + cm = createDefaultIndexedColorModel( false ); + + case BufferedImage.TYPE_BYTE_GRAY: + sm = new PixelInterleavedSampleModel( DataBuffer.TYPE_BYTE, + width, height, + 1, width, new int[]{ 0 } ); + break; + + case BufferedImage.TYPE_USHORT_GRAY: + sm = new PixelInterleavedSampleModel( DataBuffer.TYPE_USHORT, + width, height, + 1, width, new int[]{ 0 } ); + break; + + case BufferedImage.TYPE_BYTE_BINARY: + cm = createDefaultIndexedColorModel( true ); + sm = new MultiPixelPackedSampleModel(DataBuffer.TYPE_BYTE, + width, height, 1); + break; + + default: + sm = null; + } + + if( sm == null ) + throw new IllegalArgumentException("Unknown predefined image type."); + + if( cm == null ) // only for the grayscale types + { + int buftype; + int[] bits = new int[1]; + if( type == BufferedImage.TYPE_BYTE_GRAY ) + { + buftype = DataBuffer.TYPE_BYTE; + bits[0] = 8; + } + else + { + buftype = DataBuffer.TYPE_USHORT; + bits[0] = 16; + } + ColorSpace graySpace = ColorSpace.getInstance( ColorSpace.CS_GRAY ); + + cm = new ComponentColorModel( graySpace, bits, false, false, + Transparency.OPAQUE, buftype ); + } + + WritableRaster rst = null; + + // Attempt to create an accelerated backend for this image + GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment(); + if (env instanceof ClasspathGraphicsEnvironment) + rst = ((ClasspathGraphicsEnvironment)env).createRaster(cm, sm); + + // Default to a standard Java raster & databuffer if needed + if (rst == null) + rst = Raster.createWritableRaster(sm, new Point( 0, 0 ) ); + + init(cm, rst, premultiplied, + null, // no properties + type ); + } + + public BufferedImage(int w, int h, int type, IndexColorModel indexcolormodel) + { + if ((type != TYPE_BYTE_BINARY) && (type != TYPE_BYTE_INDEXED)) + throw new IllegalArgumentException("Type must be TYPE_BYTE_BINARY or TYPE_BYTE_INDEXED"); + if( indexcolormodel.getMapSize() > 16 && type == TYPE_BYTE_BINARY ) + throw new IllegalArgumentException("Type TYPE_BYTE_BINARY cannot have a larger than 16-color palette."); + if( indexcolormodel.getMapSize() > 256 ) + throw new IllegalArgumentException("Byte type cannot have a larger than 256-color palette."); + + init( indexcolormodel, + indexcolormodel.createCompatibleWritableRaster(w, h), + indexcolormodel.isAlphaPremultiplied(), + null, // no properties + type ); + } + + public BufferedImage(ColorModel colormodel, WritableRaster writableraster, + boolean premultiplied, Hashtable<?,?> properties) + { + init(colormodel, writableraster, premultiplied, properties, TYPE_CUSTOM); + } + + + private void init(ColorModel cm, WritableRaster writableraster, + boolean premultiplied, Hashtable properties, int type) + { + raster = writableraster; + colorModel = cm; + this.properties = properties; + isPremultiplied = premultiplied; + this.type = type; + } + + /** + * Creates the default palettes for the predefined indexed color types + * (256-color or black-and-white) + * + * @param binary - If <code>true</code>, a black and white palette, + * otherwise a default 256-color palette is returned. + */ + private IndexColorModel createDefaultIndexedColorModel( boolean binary ) + { + if( binary ) + { + byte[] t = new byte[]{ 0, (byte)255 }; + return new IndexColorModel( 1, 2, t, t, t ); + } + + byte[] r = new byte[256]; + byte[] g = new byte[256]; + byte[] b = new byte[256]; + + int index = 0; + for( int i = 0; i < 6; i++ ) + for( int j = 0; j < 6; j++ ) + for( int k = 0; k < 6; k++ ) + { + r[ index ] = (byte)(i * 51); + g[ index ] = (byte)(j * 51); + b[ index ] = (byte)(k * 51); + index++; + } + + while( index < 256 ) + { + r[ index ] = g[ index ] = b[ index ] = + (byte)(18 + (index - 216) * 6); + index++; + } + + return new IndexColorModel( 8, 256, r, g, b ); + } + + public void coerceData(boolean premultiplied) + { + colorModel = colorModel.coerceData(raster, premultiplied); + isPremultiplied = premultiplied; + } + + public WritableRaster copyData(WritableRaster dest) + { + if (dest == null) + dest = raster.createCompatibleWritableRaster(getMinX(), getMinY(), + getWidth(),getHeight()); + + int x = dest.getMinX(); + int y = dest.getMinY(); + int w = dest.getWidth(); + int h = dest.getHeight(); + + // create a src child that has the right bounds... + WritableRaster src = + raster.createWritableChild(x, y, w, h, x, y, + null); // same bands + + if (src.getSampleModel () instanceof ComponentSampleModel + && dest.getSampleModel () instanceof ComponentSampleModel) + // Refer to ComponentDataBlitOp for optimized data blitting: + ComponentDataBlitOp.INSTANCE.filter(src, dest); + + else + { + // slower path + int samples[] = src.getPixels (x, y, w, h, (int [])null); + dest.setPixels (x, y, w, h, samples); + } + return dest; + } + + public Graphics2D createGraphics() + { + GraphicsEnvironment env; + env = GraphicsEnvironment.getLocalGraphicsEnvironment (); + return env.createGraphics (this); + } + + public void flush() + { + } + + public WritableRaster getAlphaRaster() + { + return colorModel.getAlphaRaster(raster); + } + + public ColorModel getColorModel() + { + return colorModel; + } + + public Raster getData() + { + return copyData(null); + /* TODO: this might be optimized by returning the same + raster (not writable) as long as image data doesn't change. */ + } + + public Raster getData(Rectangle rectangle) + { + WritableRaster dest = + raster.createCompatibleWritableRaster(rectangle); + return copyData(dest); + } + + public Graphics getGraphics() + { + return createGraphics(); + } + + public int getHeight() + { + return raster.getHeight(); + } + + public int getHeight(ImageObserver imageobserver) + { + return getHeight(); + } + + public int getMinTileX() + { + return 0; + } + + public int getMinTileY() + { + return 0; + } + + public int getMinX() + { + return 0; + } + + public int getMinY() + { + return 0; + } + + public int getNumXTiles() + { + return 1; + } + + public int getNumYTiles() + { + return 1; + } + + /** + * Returns the value of the specified property, or + * {@link Image#UndefinedProperty} if the property is not defined. + * + * @param string the property key (<code>null</code> not permitted). + * + * @return The property value. + * + * @throws NullPointerException if <code>string</code> is <code>null</code>. + */ + public Object getProperty(String string) + { + if (string == null) + throw new NullPointerException("The property name cannot be null."); + Object result = Image.UndefinedProperty; + if (properties != null) + { + Object v = properties.get(string); + if (v != null) + result = v; + } + return result; + } + + public Object getProperty(String string, ImageObserver imageobserver) + { + return getProperty(string); + } + + /** + * Returns <code>null</code> always. + * + * @return <code>null</code> always. + */ + public String[] getPropertyNames() + { + // This method should always return null, see: + // http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4640609 + return null; + } + + public int getRGB(int x, int y) + { + Object rgbElem = raster.getDataElements(x, y, null); + return colorModel.getRGB(rgbElem); + } + + public int[] getRGB(int startX, int startY, int w, int h, int[] rgbArray, + int offset, int scanlineStride) + { + if (rgbArray == null) + { + /* + 000000000000000000 + 00000[#######----- [ = start + -----########----- ] = end + -----#######]00000 + 000000000000000000 + */ + int size = (h-1)*scanlineStride + w; + rgbArray = new int[size]; + } + + int endX = startX + w; + int endY = startY + h; + + /* *TODO*: + Opportunity for optimization by examining color models... + + Perhaps wrap the rgbArray up in a WritableRaster with packed + sRGB color model and perform optimized rendering into the + array. */ + + Object rgbElem = null; + for (int y=startY; y<endY; y++) + { + int xoffset = offset; + for (int x=startX; x<endX; x++) + { + int rgb; + rgbElem = raster.getDataElements(x, y, rgbElem); + rgb = colorModel.getRGB(rgbElem); + rgbArray[xoffset++] = rgb; + } + offset += scanlineStride; + } + return rgbArray; + } + + public WritableRaster getRaster() + { + return raster; + } + + public SampleModel getSampleModel() + { + return raster.getSampleModel(); + } + + public ImageProducer getSource() + { + return new ImageProducer() + { + Vector<ImageConsumer> consumers = new Vector<ImageConsumer>(); + + public void addConsumer(ImageConsumer ic) + { + if(!consumers.contains(ic)) + consumers.add(ic); + } + + public boolean isConsumer(ImageConsumer ic) + { + return consumers.contains(ic); + } + + public void removeConsumer(ImageConsumer ic) + { + consumers.remove(ic); + } + + public void startProduction(ImageConsumer ic) + { + int x = 0; + int y = 0; + int width = getWidth(); + int height = getHeight(); + int stride = width; + int offset = 0; + int[] pixels = getRGB(x, y, + width, height, + (int[])null, offset, stride); + // We already convert the color to RGB in the getRGB call, so + // we pass a simple RGB color model to the consumers. + ColorModel model = new DirectColorModel(32, 0xff0000, 0xff00, 0xff, + 0xff000000); + + consumers.add(ic); + + for(int i = 0; i < consumers.size(); i++) + { + ImageConsumer c = consumers.elementAt(i); + c.setHints(ImageConsumer.SINGLEPASS); + c.setDimensions(getWidth(), getHeight()); + c.setPixels(x, y, width, height, model, pixels, offset, stride); + c.imageComplete(ImageConsumer.STATICIMAGEDONE); + } + } + + public void requestTopDownLeftRightResend(ImageConsumer ic) + { + startProduction(ic); + } + + }; + } + + public Vector<RenderedImage> getSources() + { + return null; + } + + public BufferedImage getSubimage(int x, int y, int w, int h) + { + WritableRaster subRaster = + getRaster().createWritableChild(x, y, w, h, 0, 0, null); + + return new BufferedImage(getColorModel(), subRaster, isPremultiplied, + properties); + } + + public Raster getTile(int tileX, int tileY) + { + return getWritableTile(tileX, tileY); + } + + public int getTileGridXOffset() + { + return 0; // according to javadocs + } + + public int getTileGridYOffset() + { + return 0; // according to javadocs + } + + public int getTileHeight() + { + return getHeight(); // image is one big tile + } + + public int getTileWidth() + { + return getWidth(); // image is one big tile + } + + public int getType() + { + return type; + } + + public int getWidth() + { + return raster.getWidth(); + } + + public int getWidth(ImageObserver imageobserver) + { + return getWidth(); + } + + public WritableRaster getWritableTile(int tileX, int tileY) + { + isTileWritable(tileX, tileY); // for exception + return raster; + } + + private static final Point[] tileIndices = { new Point() }; + + public Point[] getWritableTileIndices() + { + return tileIndices; + } + + public boolean hasTileWriters() + { + return true; + } + + public boolean isAlphaPremultiplied() + { + return isPremultiplied; + } + + public boolean isTileWritable(int tileX, int tileY) + { + if ((tileX != 0) || (tileY != 0)) + throw new ArrayIndexOutOfBoundsException("only tile is (0,0)"); + return true; + } + + public void releaseWritableTile(int tileX, int tileY) + { + isTileWritable(tileX, tileY); // for exception + } + + //public void removeTileObserver(TileObserver tileobserver) {} + + public void setData(Raster src) + { + int x = src.getMinX(); + int y = src.getMinY(); + int w = src.getWidth(); + int h = src.getHeight(); + + // create a dest child that has the right bounds... + WritableRaster dest = + raster.createWritableChild(x, y, w, h, x, y, null); + + if (src.getSampleModel () instanceof ComponentSampleModel + && dest.getSampleModel () instanceof ComponentSampleModel) + + // Refer to ComponentDataBlitOp for optimized data blitting: + ComponentDataBlitOp.INSTANCE.filter(src, dest); + else + { + // slower path + int samples[] = src.getPixels (x, y, w, h, (int [])null); + dest.setPixels (x, y, w, h, samples); + } + } + + public void setRGB(int x, int y, int argb) + { + Object rgbElem = colorModel.getDataElements(argb, null); + raster.setDataElements(x, y, rgbElem); + } + + public void setRGB(int startX, int startY, int w, int h, + int[] argbArray, int offset, int scanlineStride) + { + int endX = startX + w; + int endY = startY + h; + + Object rgbElem = null; + for (int y=startY; y<endY; y++) + { + int xoffset = offset; + for (int x=startX; x<endX; x++) + { + int argb = argbArray[xoffset++]; + rgbElem = colorModel.getDataElements(argb, rgbElem); + raster.setDataElements(x, y, rgbElem); + } + offset += scanlineStride; + } + } + + public String toString() + { + CPStringBuilder buf; + + buf = new CPStringBuilder(/* estimated length */ 120); + buf.append("BufferedImage@"); + buf.append(Integer.toHexString(hashCode())); + buf.append(": type="); + buf.append(type); + buf.append(' '); + buf.append(colorModel); + buf.append(' '); + buf.append(raster); + + return buf.toString(); + } + + + /** + * Adds a tile observer. If the observer is already present, it receives + * multiple notifications. + * + * @param to The TileObserver to add. + */ + public void addTileObserver (TileObserver to) + { + if (tileObservers == null) + tileObservers = new Vector<TileObserver>(); + + tileObservers.add (to); + } + + /** + * Removes a tile observer. If the observer was not registered, + * nothing happens. If the observer was registered for multiple + * notifications, it is now registered for one fewer notification. + * + * @param to The TileObserver to remove. + */ + public void removeTileObserver (TileObserver to) + { + if (tileObservers == null) + return; + + tileObservers.remove (to); + } + + /** + * Return the transparency type. + * + * @return One of {@link #OPAQUE}, {@link #BITMASK}, or {@link #TRANSLUCENT}. + * @see Transparency#getTransparency() + * @since 1.5 + */ + public int getTransparency() + { + return colorModel.getTransparency(); + } +} |