| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| /** |
| * @author Igor V. Stolyarov |
| * @version $Revision$ |
| */ |
| |
| package java.awt.image; |
| |
| import java.awt.Transparency; |
| import java.awt.color.ColorSpace; |
| import java.math.BigInteger; |
| |
| import org.apache.harmony.awt.internal.nls.Messages; |
| |
| /** |
| * The Class IndexColorModel represents a color model in which the color values |
| * of the pixels are read from a palette. |
| * |
| * @since Android 1.0 |
| */ |
| public class IndexColorModel extends ColorModel { |
| |
| /** |
| * The color map. |
| */ |
| private int colorMap[]; // Color Map |
| |
| /** |
| * The map size. |
| */ |
| private int mapSize; // Color Map size |
| |
| /** |
| * The transparent index. |
| */ |
| private int transparentIndex; // Index of fully transparent pixel |
| |
| /** |
| * The gray palette. |
| */ |
| private boolean grayPalette; // Color Model has Color Map with Gray Pallete |
| |
| /** |
| * The valid bits. |
| */ |
| private BigInteger validBits; // Specify valid Color Map values |
| |
| /** |
| * The Constant CACHESIZE. |
| */ |
| private static final int CACHESIZE = 20; // Cache size. Cache used for |
| |
| // improving performace of selection |
| // nearest color in Color Map |
| |
| /** |
| * The cachetable. |
| */ |
| private final int cachetable[] = new int[CACHESIZE * 2]; // Cache table - |
| |
| // used for |
| |
| // storing RGB values and that appropriate indices |
| // in the Color Map |
| |
| /** |
| * The next insert idx. |
| */ |
| private int nextInsertIdx = 0; // Next index for insertion into Cache table |
| |
| /** |
| * The total inserted. |
| */ |
| private int totalInserted = 0; // Number of inserted values into Cache table |
| |
| /** |
| * Instantiates a new index color model. |
| * |
| * @param bits |
| * the array of component masks. |
| * @param size |
| * the size of the color map. |
| * @param cmap |
| * the array that gives the color mapping. |
| * @param start |
| * the start index of the color mapping data within the cmap |
| * array. |
| * @param transferType |
| * the transfer type (primitive java type to use for the |
| * components). |
| * @param validBits |
| * a list of which bits represent valid colormap values, or null |
| * if all are valid. |
| * @throws IllegalArgumentException |
| * if the size of the color map is less than one. |
| */ |
| public IndexColorModel(int bits, int size, int cmap[], int start, int transferType, |
| BigInteger validBits) { |
| |
| super(bits, IndexColorModel.createBits(true), ColorSpace.getInstance(ColorSpace.CS_sRGB), |
| true, false, Transparency.OPAQUE, validateTransferType(transferType)); |
| |
| if (size < 1) { |
| // awt.264=Size of the color map is less than 1 |
| throw new IllegalArgumentException(Messages.getString("awt.264")); //$NON-NLS-1$ |
| } |
| |
| mapSize = size; |
| colorMap = new int[mapSize]; |
| transparentIndex = -1; |
| |
| if (validBits != null) { |
| for (int i = 0; i < mapSize; i++) { |
| if (!validBits.testBit(i)) { |
| this.validBits = validBits; |
| } |
| break; |
| } |
| } |
| |
| transparency = Transparency.OPAQUE; |
| int alphaMask = 0xff000000; |
| int alpha = 0; |
| |
| for (int i = 0; i < mapSize; i++, start++) { |
| colorMap[i] = cmap[start]; |
| alpha = cmap[start] & alphaMask; |
| |
| if (alpha == alphaMask) { |
| continue; |
| } |
| if (alpha == 0) { |
| if (transparentIndex < 0) { |
| transparentIndex = i; |
| } |
| if (transparency == Transparency.OPAQUE) { |
| transparency = Transparency.BITMASK; |
| } |
| } else if (alpha != alphaMask && transparency != Transparency.TRANSLUCENT) { |
| transparency = Transparency.TRANSLUCENT; |
| } |
| |
| } |
| checkPalette(); |
| |
| } |
| |
| /** |
| * Instantiates a new index color model. |
| * |
| * @param bits |
| * the array of component masks. |
| * @param size |
| * the size of the color map. |
| * @param cmap |
| * the array that gives the color mapping. |
| * @param start |
| * the start index of the color mapping data within the cmap |
| * array. |
| * @param hasalpha |
| * whether this color model uses alpha. |
| * @param trans |
| * the transparency supported, @see java.awt.Transparency. |
| * @param transferType |
| * the transfer type (primitive java type to use for the |
| * components). |
| * @throws IllegalArgumentException |
| * if the size of the color map is less than one. |
| */ |
| public IndexColorModel(int bits, int size, int cmap[], int start, boolean hasalpha, int trans, |
| int transferType) { |
| |
| super(bits, IndexColorModel.createBits(hasalpha || (trans >= 0)), ColorSpace |
| .getInstance(ColorSpace.CS_sRGB), (hasalpha || (trans >= 0)), false, |
| Transparency.OPAQUE, validateTransferType(transferType)); |
| |
| if (size < 1) { |
| // awt.264=Size of the color map is less than 1 |
| throw new IllegalArgumentException(Messages.getString("awt.264")); //$NON-NLS-1$ |
| } |
| |
| mapSize = size; |
| colorMap = new int[mapSize]; |
| if (trans >= 0 && trans < mapSize) { |
| transparentIndex = trans; |
| transparency = Transparency.BITMASK; |
| } else { |
| transparentIndex = -1; |
| transparency = Transparency.OPAQUE; |
| } |
| |
| int alphaMask = 0xff000000; |
| int alpha = 0; |
| |
| for (int i = 0; i < mapSize; i++, start++) { |
| if (transparentIndex == i) { |
| colorMap[i] = cmap[start] & 0x00ffffff; |
| continue; |
| } |
| if (hasalpha) { |
| alpha = cmap[start] & alphaMask; |
| colorMap[i] = cmap[start]; |
| |
| if (alpha == alphaMask) { |
| continue; |
| } |
| if (alpha == 0) { |
| if (trans < 0) { |
| trans = i; |
| } |
| if (transparency == Transparency.OPAQUE) { |
| transparency = Transparency.BITMASK; |
| } |
| } else if (alpha != 0 && transparency != Transparency.TRANSLUCENT) { |
| transparency = Transparency.TRANSLUCENT; |
| } |
| } else { |
| colorMap[i] = alphaMask | cmap[start]; |
| } |
| } |
| checkPalette(); |
| |
| } |
| |
| /** |
| * Instantiates a new index color model by building the color map from |
| * arrays of red, green, blue, and alpha values. |
| * |
| * @param bits |
| * the array of component masks. |
| * @param size |
| * the size of the color map. |
| * @param r |
| * the array giving the red components of the entries in the |
| * color map. |
| * @param g |
| * the array giving the green components of the entries in the |
| * color map. |
| * @param b |
| * the array giving the blue components of the entries in the |
| * color map. |
| * @param a |
| * the array giving the alpha components of the entries in the |
| * color map. |
| * @throws IllegalArgumentException |
| * if the size of the color map is less than one. |
| * @throws ArrayIndexOutOfBoundsException |
| * if the size of one of the component arrays is less than the |
| * size of the color map. |
| */ |
| public IndexColorModel(int bits, int size, byte r[], byte g[], byte b[], byte a[]) { |
| |
| super(bits, IndexColorModel.createBits(true), ColorSpace.getInstance(ColorSpace.CS_sRGB), |
| true, false, Transparency.OPAQUE, validateTransferType(ColorModel |
| .getTransferType(bits))); |
| |
| createColorMap(size, r, g, b, a, -1); |
| checkPalette(); |
| } |
| |
| /** |
| * Instantiates a new index color model by building the color map from |
| * arrays of red, green, and blue values. |
| * |
| * @param bits |
| * the array of component masks. |
| * @param size |
| * the size of the color map. |
| * @param r |
| * the array giving the red components of the entries in the |
| * color map. |
| * @param g |
| * the array giving the green components of the entries in the |
| * color map. |
| * @param b |
| * the array giving the blue components of the entries in the |
| * color map. |
| * @param trans |
| * the transparency supported, @see java.awt.Transparency. |
| * @throws IllegalArgumentException |
| * if the size of the color map is less than one. |
| * @throws ArrayIndexOutOfBoundsException |
| * if the size of one of the component arrays is less than the |
| * size of the color map. |
| */ |
| public IndexColorModel(int bits, int size, byte r[], byte g[], byte b[], int trans) { |
| |
| super(bits, IndexColorModel.createBits((trans >= 0)), ColorSpace |
| .getInstance(ColorSpace.CS_sRGB), (trans >= 0), false, Transparency.OPAQUE, |
| validateTransferType(ColorModel.getTransferType(bits))); |
| |
| createColorMap(size, r, g, b, null, trans); |
| checkPalette(); |
| } |
| |
| /** |
| * Instantiates a new index color model by building the color map from |
| * arrays of red, green, and blue values. |
| * |
| * @param bits |
| * the array of component masks. |
| * @param size |
| * the size of the color map. |
| * @param r |
| * the array giving the red components of the entries in the |
| * color map. |
| * @param g |
| * the array giving the green components of the entries in the |
| * color map. |
| * @param b |
| * the array giving the blue components of the entries in the |
| * color map. |
| * @throws IllegalArgumentException |
| * if the size of the color map is less than one. |
| * @throws ArrayIndexOutOfBoundsException |
| * if the size of one of the component arrays is less than the |
| * size of the color map. |
| */ |
| public IndexColorModel(int bits, int size, byte r[], byte g[], byte b[]) { |
| super(bits, IndexColorModel.createBits(false), ColorSpace.getInstance(ColorSpace.CS_sRGB), |
| false, false, Transparency.OPAQUE, validateTransferType(ColorModel |
| .getTransferType(bits))); |
| |
| createColorMap(size, r, g, b, null, -1); |
| checkPalette(); |
| } |
| |
| /** |
| * Instantiates a new index color model. |
| * |
| * @param bits |
| * the array of component masks. |
| * @param size |
| * the size of the color map. |
| * @param cmap |
| * the array that gives the color mapping. |
| * @param start |
| * the start index of the color mapping data within the cmap |
| * array. |
| * @param hasalpha |
| * whether this color model uses alpha. |
| * @param trans |
| * the transparency supported, @see java.awt.Transparency. |
| * @throws IllegalArgumentException |
| * if the size of the color map is less than one. |
| */ |
| public IndexColorModel(int bits, int size, byte cmap[], int start, boolean hasalpha, int trans) { |
| |
| super(bits, IndexColorModel.createBits(hasalpha || (trans >= 0)), ColorSpace |
| .getInstance(ColorSpace.CS_sRGB), (hasalpha || (trans >= 0)), false, |
| Transparency.OPAQUE, validateTransferType(ColorModel.getTransferType(bits))); |
| |
| if (size < 1) { |
| // awt.264=Size of the color map is less than 1 |
| throw new IllegalArgumentException(Messages.getString("awt.264")); //$NON-NLS-1$ |
| } |
| |
| mapSize = size; |
| colorMap = new int[mapSize]; |
| transparentIndex = -1; |
| |
| transparency = Transparency.OPAQUE; |
| int alpha = 0xff000000; |
| |
| for (int i = 0; i < mapSize; i++) { |
| colorMap[i] = (cmap[start++] & 0xff) << 16 | (cmap[start++] & 0xff) << 8 |
| | (cmap[start++] & 0xff); |
| if (trans == i) { |
| if (transparency == Transparency.OPAQUE) { |
| transparency = Transparency.BITMASK; |
| } |
| if (hasalpha) { |
| start++; |
| } |
| continue; |
| } |
| if (hasalpha) { |
| alpha = cmap[start++] & 0xff; |
| if (alpha == 0) { |
| if (transparency == Transparency.OPAQUE) { |
| transparency = Transparency.BITMASK; |
| if (trans < 0) { |
| trans = i; |
| } |
| } |
| } else { |
| if (alpha != 0xff && transparency != Transparency.TRANSLUCENT) { |
| transparency = Transparency.TRANSLUCENT; |
| } |
| } |
| alpha <<= 24; |
| } |
| colorMap[i] |= alpha; |
| } |
| |
| if (trans >= 0 && trans < mapSize) { |
| transparentIndex = trans; |
| } |
| checkPalette(); |
| |
| } |
| |
| /** |
| * Instantiates a new index color model. |
| * |
| * @param bits |
| * the array of component masks. |
| * @param size |
| * the size of the color map. |
| * @param cmap |
| * the array that gives the color mapping. |
| * @param start |
| * the start index of the color mapping data within the cmap |
| * array. |
| * @param hasalpha |
| * whether this color model uses alpha. |
| * @throws IllegalArgumentException |
| * if the size of the color map is less than one. |
| */ |
| public IndexColorModel(int bits, int size, byte cmap[], int start, boolean hasalpha) { |
| |
| this(bits, size, cmap, start, hasalpha, -1); |
| } |
| |
| @Override |
| public Object getDataElements(int[] components, int offset, Object pixel) { |
| int rgb = (components[offset] << 16) | (components[offset + 1]) << 8 |
| | components[offset + 2]; |
| if (hasAlpha) { |
| rgb |= components[offset + 3] << 24; |
| } else { |
| rgb |= 0xff000000; |
| } |
| return getDataElements(rgb, pixel); |
| } |
| |
| @Override |
| public synchronized Object getDataElements(int rgb, Object pixel) { |
| int red = (rgb >> 16) & 0xff; |
| int green = (rgb >> 8) & 0xff; |
| int blue = rgb & 0xff; |
| int alpha = rgb >>> 24; |
| int pixIdx = 0; |
| |
| for (int i = 0; i < totalInserted; i++) { |
| int idx = i * 2; |
| if (rgb == cachetable[idx]) { |
| return createDataObject(cachetable[idx + 1], pixel); |
| } |
| } |
| |
| if (!hasAlpha && grayPalette) { |
| int grey = (red * 77 + green * 150 + blue * 29 + 128) >>> 8; |
| int minError = 255; |
| int error = 0; |
| |
| for (int i = 0; i < mapSize; i++) { |
| error = Math.abs((colorMap[i] & 0xff) - grey); |
| if (error < minError) { |
| pixIdx = i; |
| if (error == 0) { |
| break; |
| } |
| minError = error; |
| } |
| } |
| } else if (alpha == 0 && transparentIndex > -1) { |
| pixIdx = transparentIndex; |
| } else { |
| int minAlphaError = 255; |
| int minError = 195075; // 255^2 + 255^2 + 255^2 |
| int alphaError; |
| int error = 0; |
| |
| for (int i = 0; i < mapSize; i++) { |
| int pix = colorMap[i]; |
| if (rgb == pix) { |
| pixIdx = i; |
| break; |
| } |
| alphaError = Math.abs(alpha - (pix >>> 24)); |
| if (alphaError <= minAlphaError) { |
| minAlphaError = alphaError; |
| |
| int buf = ((pix >> 16) & 0xff) - red; |
| error = buf * buf; |
| |
| if (error < minError) { |
| buf = ((pix >> 8) & 0xff) - green; |
| error += buf * buf; |
| |
| if (error < minError) { |
| buf = (pix & 0xff) - blue; |
| error += buf * buf; |
| |
| if (error < minError) { |
| pixIdx = i; |
| minError = error; |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| cachetable[nextInsertIdx] = rgb; |
| cachetable[nextInsertIdx + 1] = pixIdx; |
| |
| nextInsertIdx = (nextInsertIdx + 2) % (CACHESIZE * 2); |
| if (totalInserted < CACHESIZE) { |
| totalInserted++; |
| } |
| |
| return createDataObject(pixIdx, pixel); |
| } |
| |
| /** |
| * Converts an image from indexed to RGB format. |
| * |
| * @param raster |
| * the raster containing the source image. |
| * @param forceARGB |
| * whether to use the default RGB color model. |
| * @return the buffered image. |
| * @throws IllegalArgumentException |
| * if the raster is not compatible with this color model. |
| */ |
| public BufferedImage convertToIntDiscrete(Raster raster, boolean forceARGB) { |
| |
| if (!isCompatibleRaster(raster)) { |
| // awt.265=The raster argument is not compatible with this |
| // IndexColorModel |
| throw new IllegalArgumentException(Messages.getString("awt.265")); //$NON-NLS-1$ |
| } |
| |
| ColorModel model; |
| if (forceARGB || transparency == Transparency.TRANSLUCENT) { |
| model = ColorModel.getRGBdefault(); |
| } else if (transparency == Transparency.BITMASK) { |
| model = new DirectColorModel(25, 0x00ff0000, 0x0000ff00, 0x000000ff, 0x01000000); |
| } else { |
| model = new DirectColorModel(24, 0x00ff0000, 0x0000ff00, 0x000000ff); |
| } |
| |
| int w = raster.getWidth(); |
| int h = raster.getHeight(); |
| |
| WritableRaster distRaster = model.createCompatibleWritableRaster(w, h); |
| |
| int minX = raster.getMinX(); |
| int minY = raster.getMinY(); |
| |
| Object obj = null; |
| int pixels[] = null; |
| |
| for (int i = 0; i < h; i++, minY++) { |
| obj = raster.getDataElements(minX, minY, w, 1, obj); |
| if (obj instanceof byte[]) { |
| byte ba[] = (byte[])obj; |
| if (pixels == null) { |
| pixels = new int[ba.length]; |
| } |
| for (int j = 0; j < ba.length; j++) { |
| pixels[j] = colorMap[ba[j] & 0xff]; |
| } |
| } else if (obj instanceof short[]) { |
| short sa[] = (short[])obj; |
| if (pixels == null) { |
| pixels = new int[sa.length]; |
| } |
| for (int j = 0; j < sa.length; j++) { |
| pixels[j] = colorMap[sa[j] & 0xffff]; |
| } |
| } |
| if (obj instanceof int[]) { |
| int ia[] = (int[])obj; |
| if (pixels == null) { |
| pixels = new int[ia.length]; |
| } |
| for (int j = 0; j < ia.length; j++) { |
| pixels[j] = colorMap[ia[j]]; |
| } |
| } |
| |
| distRaster.setDataElements(0, i, w, 1, pixels); |
| } |
| |
| return new BufferedImage(model, distRaster, false, null); |
| } |
| |
| /** |
| * Gets the valid pixels. |
| * |
| * @return the valid pixels. |
| */ |
| public BigInteger getValidPixels() { |
| return validBits; |
| } |
| |
| @Override |
| public String toString() { |
| // The output format based on 1.5 release behaviour. |
| // It could be reveled such way: |
| // BufferedImage bi = new BufferedImage(1, 1, |
| // BufferedImage.TYPE_BYTE_INDEXED); |
| // ColorModel cm = bi.getColorModel(); |
| // System.out.println(cm.toString()); |
| String str = "IndexColorModel: #pixel_bits = " + pixel_bits + //$NON-NLS-1$ |
| " numComponents = " + numComponents + " color space = " + cs + //$NON-NLS-1$ //$NON-NLS-2$ |
| " transparency = "; //$NON-NLS-1$ |
| |
| if (transparency == Transparency.OPAQUE) { |
| str = str + "Transparency.OPAQUE"; //$NON-NLS-1$ |
| } else if (transparency == Transparency.BITMASK) { |
| str = str + "Transparency.BITMASK"; //$NON-NLS-1$ |
| } else { |
| str = str + "Transparency.TRANSLUCENT"; //$NON-NLS-1$ |
| } |
| |
| str = str + " transIndex = " + transparentIndex + " has alpha = " + //$NON-NLS-1$ //$NON-NLS-2$ |
| hasAlpha + " isAlphaPre = " + isAlphaPremultiplied; //$NON-NLS-1$ |
| |
| return str; |
| } |
| |
| @Override |
| public int[] getComponents(Object pixel, int components[], int offset) { |
| int pixIdx = -1; |
| if (pixel instanceof byte[]) { |
| byte ba[] = (byte[])pixel; |
| pixIdx = ba[0] & 0xff; |
| } else if (pixel instanceof short[]) { |
| short sa[] = (short[])pixel; |
| pixIdx = sa[0] & 0xffff; |
| } else if (pixel instanceof int[]) { |
| int ia[] = (int[])pixel; |
| pixIdx = ia[0]; |
| } else { |
| // awt.219=This transferType is not supported by this color model |
| throw new UnsupportedOperationException(Messages.getString("awt.219")); //$NON-NLS-1$ |
| } |
| |
| return getComponents(pixIdx, components, offset); |
| } |
| |
| @Override |
| public WritableRaster createCompatibleWritableRaster(int w, int h) { |
| WritableRaster raster; |
| if (pixel_bits == 1 || pixel_bits == 2 || pixel_bits == 4) { |
| raster = Raster.createPackedRaster(DataBuffer.TYPE_BYTE, w, h, 1, pixel_bits, null); |
| } else if (pixel_bits <= 8) { |
| raster = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, w, h, 1, null); |
| } else if (pixel_bits <= 16) { |
| raster = Raster.createInterleavedRaster(DataBuffer.TYPE_USHORT, w, h, 1, null); |
| } else { |
| // awt.266=The number of bits in a pixel is greater than 16 |
| throw new UnsupportedOperationException(Messages.getString("awt.266")); //$NON-NLS-1$ |
| } |
| |
| return raster; |
| } |
| |
| @Override |
| public boolean isCompatibleSampleModel(SampleModel sm) { |
| if (sm == null) { |
| return false; |
| } |
| |
| if (!(sm instanceof MultiPixelPackedSampleModel) && !(sm instanceof ComponentSampleModel)) { |
| return false; |
| } |
| |
| if (sm.getTransferType() != transferType) { |
| return false; |
| } |
| if (sm.getNumBands() != 1) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| @Override |
| public SampleModel createCompatibleSampleModel(int w, int h) { |
| if (pixel_bits == 1 || pixel_bits == 2 || pixel_bits == 4) { |
| return new MultiPixelPackedSampleModel(DataBuffer.TYPE_BYTE, w, h, pixel_bits); |
| } |
| int bandOffsets[] = new int[1]; |
| bandOffsets[0] = 0; |
| return new ComponentSampleModel(transferType, w, h, 1, w, bandOffsets); |
| |
| } |
| |
| @Override |
| public boolean isCompatibleRaster(Raster raster) { |
| int sampleSize = raster.getSampleModel().getSampleSize(0); |
| return (raster.getTransferType() == transferType && raster.getNumBands() == 1 && (1 << sampleSize) >= mapSize); |
| } |
| |
| @Override |
| public int getDataElement(int components[], int offset) { |
| int rgb = (components[offset] << 16) | (components[offset + 1]) << 8 |
| | components[offset + 2]; |
| |
| if (hasAlpha) { |
| rgb |= components[offset + 3] << 24; |
| } else { |
| rgb |= 0xff000000; |
| } |
| |
| int pixel; |
| |
| switch (transferType) { |
| case DataBuffer.TYPE_BYTE: |
| byte ba[] = (byte[])getDataElements(rgb, null); |
| pixel = ba[0] & 0xff; |
| break; |
| case DataBuffer.TYPE_USHORT: |
| short sa[] = (short[])getDataElements(rgb, null); |
| pixel = sa[0] & 0xffff; |
| break; |
| default: |
| // awt.267=The transferType is invalid |
| throw new UnsupportedOperationException(Messages.getString("awt.267")); //$NON-NLS-1$ |
| } |
| |
| return pixel; |
| } |
| |
| /** |
| * Gets the color map. |
| * |
| * @param rgb |
| * the destination array where the color map is written. |
| */ |
| public final void getRGBs(int rgb[]) { |
| System.arraycopy(colorMap, 0, rgb, 0, mapSize); |
| } |
| |
| /** |
| * Gets the red component of the color map. |
| * |
| * @param r |
| * the destination array. |
| */ |
| public final void getReds(byte r[]) { |
| for (int i = 0; i < mapSize; i++) { |
| r[i] = (byte)(colorMap[i] >> 16); |
| } |
| } |
| |
| /** |
| * Gets the green component of the color map. |
| * |
| * @param g |
| * the destination array. |
| */ |
| public final void getGreens(byte g[]) { |
| for (int i = 0; i < mapSize; i++) { |
| g[i] = (byte)(colorMap[i] >> 8); |
| } |
| } |
| |
| /** |
| * Gets the blue component of the color map. |
| * |
| * @param b |
| * the destination array. |
| */ |
| public final void getBlues(byte b[]) { |
| for (int i = 0; i < mapSize; i++) { |
| b[i] = (byte)colorMap[i]; |
| } |
| } |
| |
| /** |
| * Gets the alpha component of the color map. |
| * |
| * @param a |
| * the destination array. |
| */ |
| public final void getAlphas(byte a[]) { |
| for (int i = 0; i < mapSize; i++) { |
| a[i] = (byte)(colorMap[i] >> 24); |
| } |
| } |
| |
| @Override |
| public int[] getComponents(int pixel, int components[], int offset) { |
| if (components == null) { |
| components = new int[offset + numComponents]; |
| } |
| |
| components[offset + 0] = getRed(pixel); |
| components[offset + 1] = getGreen(pixel); |
| components[offset + 2] = getBlue(pixel); |
| if (hasAlpha && (components.length - offset) > 3) { |
| components[offset + 3] = getAlpha(pixel); |
| } |
| |
| return components; |
| } |
| |
| /** |
| * Checks if the specified pixel is valid for this color model. |
| * |
| * @param pixel |
| * the pixel. |
| * @return true, if the pixel is valid. |
| */ |
| public boolean isValid(int pixel) { |
| if (validBits == null) { |
| return (pixel >= 0 && pixel < mapSize); |
| } |
| return (pixel < mapSize && validBits.testBit(pixel)); |
| } |
| |
| @Override |
| public final int getRed(int pixel) { |
| return (colorMap[pixel] >> 16) & 0xff; |
| } |
| |
| @Override |
| public final int getRGB(int pixel) { |
| return colorMap[pixel]; |
| } |
| |
| @Override |
| public final int getGreen(int pixel) { |
| return (colorMap[pixel] >> 8) & 0xff; |
| } |
| |
| @Override |
| public final int getBlue(int pixel) { |
| return colorMap[pixel] & 0xff; |
| } |
| |
| @Override |
| public final int getAlpha(int pixel) { |
| return (colorMap[pixel] >> 24) & 0xff; |
| } |
| |
| @Override |
| public int[] getComponentSize() { |
| return bits.clone(); |
| } |
| |
| /** |
| * Checks if this color model validates pixels. |
| * |
| * @return true, if all pixels are valid, otherwise false. |
| */ |
| public boolean isValid() { |
| return (validBits == null); |
| } |
| |
| @Override |
| public void finalize() { |
| // TODO: implement |
| return; |
| } |
| |
| /** |
| * Gets the index that represents the transparent pixel. |
| * |
| * @return the index that represents the transparent pixel. |
| */ |
| public final int getTransparentPixel() { |
| return transparentIndex; |
| } |
| |
| @Override |
| public int getTransparency() { |
| return transparency; |
| } |
| |
| /** |
| * Gets the size of the color map. |
| * |
| * @return the map size. |
| */ |
| public final int getMapSize() { |
| return mapSize; |
| } |
| |
| /** |
| * Creates the color map. |
| * |
| * @param size |
| * the size. |
| * @param r |
| * the r. |
| * @param g |
| * the g. |
| * @param b |
| * the b. |
| * @param a |
| * the a. |
| * @param trans |
| * the trans. |
| */ |
| private void createColorMap(int size, byte r[], byte g[], byte b[], byte a[], int trans) { |
| if (size < 1) { |
| // awt.264=Size of the color map is less than 1 |
| throw new IllegalArgumentException(Messages.getString("awt.264")); //$NON-NLS-1$ |
| } |
| |
| mapSize = size; |
| colorMap = new int[mapSize]; |
| if (trans >= 0 && trans < mapSize) { |
| transparency = Transparency.BITMASK; |
| transparentIndex = trans; |
| } else { |
| transparency = Transparency.OPAQUE; |
| transparentIndex = -1; |
| } |
| int alpha = 0; |
| |
| for (int i = 0; i < mapSize; i++) { |
| colorMap[i] = ((r[i] & 0xff) << 16) | ((g[i] & 0xff) << 8) | (b[i] & 0xff); |
| |
| if (trans == i) { |
| continue; |
| } |
| |
| if (a == null) { |
| colorMap[i] |= 0xff000000; |
| } else { |
| alpha = a[i] & 0xff; |
| if (alpha == 0xff) { |
| colorMap[i] |= 0xff000000; |
| } else if (alpha == 0) { |
| if (transparency == Transparency.OPAQUE) { |
| transparency = Transparency.BITMASK; |
| } |
| if (transparentIndex < 0) { |
| transparentIndex = i; |
| } |
| } else { |
| colorMap[i] |= (a[i] & 0xff) << 24; |
| if (transparency != Transparency.TRANSLUCENT) { |
| transparency = Transparency.TRANSLUCENT; |
| } |
| } |
| } |
| |
| } |
| |
| } |
| |
| /** |
| * This method checking, if Color Map has Gray palette. |
| */ |
| private void checkPalette() { |
| grayPalette = false; |
| if (transparency > Transparency.OPAQUE) { |
| return; |
| } |
| int rgb = 0; |
| |
| for (int i = 0; i < mapSize; i++) { |
| rgb = colorMap[i]; |
| if (((rgb >> 16) & 0xff) != ((rgb >> 8) & 0xff) || ((rgb >> 8) & 0xff) != (rgb & 0xff)) { |
| return; |
| } |
| } |
| grayPalette = true; |
| } |
| |
| /** |
| * Construction an array pixel representation. |
| * |
| * @param colorMapIdx |
| * the index into Color Map. |
| * @param pixel |
| * the pixel |
| * @return the pixel representation array. |
| */ |
| private Object createDataObject(int colorMapIdx, Object pixel) { |
| if (pixel == null) { |
| switch (transferType) { |
| case DataBuffer.TYPE_BYTE: |
| byte[] ba = new byte[1]; |
| ba[0] = (byte)colorMapIdx; |
| pixel = ba; |
| break; |
| case DataBuffer.TYPE_USHORT: |
| short[] sa = new short[1]; |
| sa[0] = (short)colorMapIdx; |
| pixel = sa; |
| break; |
| default: |
| // awt.267=The transferType is invalid |
| throw new UnsupportedOperationException(Messages.getString("awt.267")); //$NON-NLS-1$ |
| } |
| } else if (pixel instanceof byte[] && transferType == DataBuffer.TYPE_BYTE) { |
| byte ba[] = (byte[])pixel; |
| ba[0] = (byte)colorMapIdx; |
| pixel = ba; |
| } else if (pixel instanceof short[] && transferType == DataBuffer.TYPE_USHORT) { |
| short[] sa = (short[])pixel; |
| sa[0] = (short)colorMapIdx; |
| pixel = sa; |
| } else if (pixel instanceof int[]) { |
| int ia[] = (int[])pixel; |
| ia[0] = colorMapIdx; |
| pixel = ia; |
| } else { |
| // awt.268=The pixel is not a primitive array of type transferType |
| throw new ClassCastException(Messages.getString("awt.268")); //$NON-NLS-1$ |
| } |
| return pixel; |
| } |
| |
| /** |
| * Creates the bits. |
| * |
| * @param hasAlpha |
| * the has alpha. |
| * @return the int[]. |
| */ |
| private static int[] createBits(boolean hasAlpha) { |
| |
| int numChannels; |
| if (hasAlpha) { |
| numChannels = 4; |
| } else { |
| numChannels = 3; |
| } |
| |
| int bits[] = new int[numChannels]; |
| for (int i = 0; i < numChannels; i++) { |
| bits[i] = 8; |
| } |
| |
| return bits; |
| |
| } |
| |
| /** |
| * Validate transfer type. |
| * |
| * @param transferType |
| * the transfer type. |
| * @return the int. |
| */ |
| private static int validateTransferType(int transferType) { |
| if (transferType != DataBuffer.TYPE_BYTE && transferType != DataBuffer.TYPE_USHORT) { |
| // awt.269=The transferType is not one of DataBuffer.TYPE_BYTE or |
| // DataBuffer.TYPE_USHORT |
| throw new IllegalArgumentException(Messages.getString("awt.269")); //$NON-NLS-1$ |
| } |
| return transferType; |
| } |
| |
| /** |
| * Checks if is gray palette. |
| * |
| * @return true, if is gray palette. |
| */ |
| boolean isGrayPallete() { |
| return grayPalette; |
| } |
| |
| } |
