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JRE 8 rt.jar - java.* Package Source Code
JRE 8 rt.jar is the JAR file for JRE 8 RT (Runtime) libraries. JRE (Java Runtime) 8 is the runtime environment included in JDK 8. JRE 8 rt.jar libraries are divided into 6 packages:
com.* - Internal Oracle and Sun Microsystems libraries java.* - Standard Java API libraries. javax.* - Extended Java API libraries. jdk.* - JDK supporting libraries. org.* - Third party libraries. sun.* - Old libraries developed by Sun Microsystems.
JAR File Information:
Directory of C:\fyicenter\jdk-1.8.0_191\jre\lib 63,596,151 rt.jar
Here is the list of Java classes of the java.* package in JRE 1.8.0_191 rt.jar. Java source codes are also provided.
✍: FYIcenter
⏎ java/awt/image/PackedColorModel.java
/* * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. * * * * * * * * * * * * * * * * * * * * */ package java.awt.image; import java.awt.Transparency; import java.awt.color.ColorSpace; /** * The <code>PackedColorModel</code> class is an abstract * {@link ColorModel} class that works with pixel values which represent * color and alpha information as separate samples and which pack all * samples for a single pixel into a single int, short, or byte quantity. * This class can be used with an arbitrary {@link ColorSpace}. The number of * color samples in the pixel values must be the same as the number of color * components in the <code>ColorSpace</code>. There can be a single alpha * sample. The array length is always 1 for those methods that use a * primitive array pixel representation of type <code>transferType</code>. * The transfer types supported are DataBuffer.TYPE_BYTE, * DataBuffer.TYPE_USHORT, and DataBuffer.TYPE_INT. * Color and alpha samples are stored in the single element of the array * in bits indicated by bit masks. Each bit mask must be contiguous and * masks must not overlap. The same masks apply to the single int * pixel representation used by other methods. The correspondence of * masks and color/alpha samples is as follows: * <ul> * <li> Masks are identified by indices running from 0 through * {@link ColorModel#getNumComponents() getNumComponents} - 1. * <li> The first * {@link ColorModel#getNumColorComponents() getNumColorComponents} * indices refer to color samples. * <li> If an alpha sample is present, it corresponds the last index. * <li> The order of the color indices is specified * by the <code>ColorSpace</code>. Typically, this reflects the name of * the color space type (for example, TYPE_RGB), index 0 * corresponds to red, index 1 to green, and index 2 to blue. * </ul> * <p> * The translation from pixel values to color/alpha components for * display or processing purposes is a one-to-one correspondence of * samples to components. * A <code>PackedColorModel</code> is typically used with image data * that uses masks to define packed samples. For example, a * <code>PackedColorModel</code> can be used in conjunction with a * {@link SinglePixelPackedSampleModel} to construct a * {@link BufferedImage}. Normally the masks used by the * {@link SampleModel} and the <code>ColorModel</code> would be the same. * However, if they are different, the color interpretation of pixel data is * done according to the masks of the <code>ColorModel</code>. * <p> * A single <code>int</code> pixel representation is valid for all objects * of this class since it is always possible to represent pixel values * used with this class in a single <code>int</code>. Therefore, methods * that use this representation do not throw an * <code>IllegalArgumentException</code> due to an invalid pixel value. * <p> * A subclass of <code>PackedColorModel</code> is {@link DirectColorModel}, * which is similar to an X11 TrueColor visual. * * @see DirectColorModel * @see SinglePixelPackedSampleModel * @see BufferedImage */ public abstract class PackedColorModel extends ColorModel { int[] maskArray; int[] maskOffsets; float[] scaleFactors; /** * Constructs a <code>PackedColorModel</code> from a color mask array, * which specifies which bits in an <code>int</code> pixel representation * contain each of the color samples, and an alpha mask. Color * components are in the specified <code>ColorSpace</code>. The length of * <code>colorMaskArray</code> should be the number of components in * the <code>ColorSpace</code>. All of the bits in each mask * must be contiguous and fit in the specified number of least significant * bits of an <code>int</code> pixel representation. If the * <code>alphaMask</code> is 0, there is no alpha. If there is alpha, * the <code>boolean</code> <code>isAlphaPremultiplied</code> specifies * how to interpret color and alpha samples in pixel values. If the * <code>boolean</code> is <code>true</code>, color samples are assumed * to have been multiplied by the alpha sample. The transparency, * <code>trans</code>, specifies what alpha values can be represented * by this color model. The transfer type is the type of primitive * array used to represent pixel values. * @param space the specified <code>ColorSpace</code> * @param bits the number of bits in the pixel values * @param colorMaskArray array that specifies the masks representing * the bits of the pixel values that represent the color * components * @param alphaMask specifies the mask representing * the bits of the pixel values that represent the alpha * component * @param isAlphaPremultiplied <code>true</code> if color samples are * premultiplied by the alpha sample; <code>false</code> otherwise * @param trans specifies the alpha value that can be represented by * this color model * @param transferType the type of array used to represent pixel values * @throws IllegalArgumentException if <code>bits</code> is less than * 1 or greater than 32 */ public PackedColorModel (ColorSpace space, int bits, int[] colorMaskArray, int alphaMask, boolean isAlphaPremultiplied, int trans, int transferType) { super(bits, PackedColorModel.createBitsArray(colorMaskArray, alphaMask), space, (alphaMask == 0 ? false : true), isAlphaPremultiplied, trans, transferType); if (bits < 1 || bits > 32) { throw new IllegalArgumentException("Number of bits must be between" +" 1 and 32."); } maskArray = new int[numComponents]; maskOffsets = new int[numComponents]; scaleFactors = new float[numComponents]; for (int i=0; i < numColorComponents; i++) { // Get the mask offset and #bits DecomposeMask(colorMaskArray[i], i, space.getName(i)); } if (alphaMask != 0) { DecomposeMask(alphaMask, numColorComponents, "alpha"); if (nBits[numComponents-1] == 1) { transparency = Transparency.BITMASK; } } } /** * Constructs a <code>PackedColorModel</code> from the specified * masks which indicate which bits in an <code>int</code> pixel * representation contain the alpha, red, green and blue color samples. * Color components are in the specified <code>ColorSpace</code>, which * must be of type ColorSpace.TYPE_RGB. All of the bits in each * mask must be contiguous and fit in the specified number of * least significant bits of an <code>int</code> pixel representation. If * <code>amask</code> is 0, there is no alpha. If there is alpha, * the <code>boolean</code> <code>isAlphaPremultiplied</code> * specifies how to interpret color and alpha samples * in pixel values. If the <code>boolean</code> is <code>true</code>, * color samples are assumed to have been multiplied by the alpha sample. * The transparency, <code>trans</code>, specifies what alpha values * can be represented by this color model. * The transfer type is the type of primitive array used to represent * pixel values. * @param space the specified <code>ColorSpace</code> * @param bits the number of bits in the pixel values * @param rmask specifies the mask representing * the bits of the pixel values that represent the red * color component * @param gmask specifies the mask representing * the bits of the pixel values that represent the green * color component * @param bmask specifies the mask representing * the bits of the pixel values that represent * the blue color component * @param amask specifies the mask representing * the bits of the pixel values that represent * the alpha component * @param isAlphaPremultiplied <code>true</code> if color samples are * premultiplied by the alpha sample; <code>false</code> otherwise * @param trans specifies the alpha value that can be represented by * this color model * @param transferType the type of array used to represent pixel values * @throws IllegalArgumentException if <code>space</code> is not a * TYPE_RGB space * @see ColorSpace */ public PackedColorModel(ColorSpace space, int bits, int rmask, int gmask, int bmask, int amask, boolean isAlphaPremultiplied, int trans, int transferType) { super (bits, PackedColorModel.createBitsArray(rmask, gmask, bmask, amask), space, (amask == 0 ? false : true), isAlphaPremultiplied, trans, transferType); if (space.getType() != ColorSpace.TYPE_RGB) { throw new IllegalArgumentException("ColorSpace must be TYPE_RGB."); } maskArray = new int[numComponents]; maskOffsets = new int[numComponents]; scaleFactors = new float[numComponents]; DecomposeMask(rmask, 0, "red"); DecomposeMask(gmask, 1, "green"); DecomposeMask(bmask, 2, "blue"); if (amask != 0) { DecomposeMask(amask, 3, "alpha"); if (nBits[3] == 1) { transparency = Transparency.BITMASK; } } } /** * Returns the mask indicating which bits in a pixel * contain the specified color/alpha sample. For color * samples, <code>index</code> corresponds to the placement of color * sample names in the color space. Thus, an <code>index</code> * equal to 0 for a CMYK ColorSpace would correspond to * Cyan and an <code>index</code> equal to 1 would correspond to * Magenta. If there is alpha, the alpha <code>index</code> would be: * <pre> * alphaIndex = numComponents() - 1; * </pre> * @param index the specified color or alpha sample * @return the mask, which indicates which bits of the <code>int</code> * pixel representation contain the color or alpha sample specified * by <code>index</code>. * @throws ArrayIndexOutOfBoundsException if <code>index</code> is * greater than the number of components minus 1 in this * <code>PackedColorModel</code> or if <code>index</code> is * less than zero */ final public int getMask(int index) { return maskArray[index]; } /** * Returns a mask array indicating which bits in a pixel * contain the color and alpha samples. * @return the mask array , which indicates which bits of the * <code>int</code> pixel * representation contain the color or alpha samples. */ final public int[] getMasks() { return (int[]) maskArray.clone(); } /* * A utility function to compute the mask offset and scalefactor, * store these and the mask in instance arrays, and verify that * the mask fits in the specified pixel size. */ private void DecomposeMask(int mask, int idx, String componentName) { int off = 0; int count = nBits[idx]; // Store the mask maskArray[idx] = mask; // Now find the shift if (mask != 0) { while ((mask & 1) == 0) { mask >>>= 1; off++; } } if (off + count > pixel_bits) { throw new IllegalArgumentException(componentName + " mask "+ Integer.toHexString(maskArray[idx])+ " overflows pixel (expecting "+ pixel_bits+" bits"); } maskOffsets[idx] = off; if (count == 0) { // High enough to scale any 0-ff value down to 0.0, but not // high enough to get Infinity when scaling back to pixel bits scaleFactors[idx] = 256.0f; } else { scaleFactors[idx] = 255.0f / ((1 << count) - 1); } } /** * Creates a <code>SampleModel</code> with the specified width and * height that has a data layout compatible with this * <code>ColorModel</code>. * @param w the width (in pixels) of the region of the image data * described * @param h the height (in pixels) of the region of the image data * described * @return the newly created <code>SampleModel</code>. * @throws IllegalArgumentException if <code>w</code> or * <code>h</code> is not greater than 0 * @see SampleModel */ public SampleModel createCompatibleSampleModel(int w, int h) { return new SinglePixelPackedSampleModel(transferType, w, h, maskArray); } /** * Checks if the specified <code>SampleModel</code> is compatible * with this <code>ColorModel</code>. If <code>sm</code> is * <code>null</code>, this method returns <code>false</code>. * @param sm the specified <code>SampleModel</code>, * or <code>null</code> * @return <code>true</code> if the specified <code>SampleModel</code> * is compatible with this <code>ColorModel</code>; * <code>false</code> otherwise. * @see SampleModel */ public boolean isCompatibleSampleModel(SampleModel sm) { if (! (sm instanceof SinglePixelPackedSampleModel)) { return false; } // Must have the same number of components if (numComponents != sm.getNumBands()) { return false; } // Transfer type must be the same if (sm.getTransferType() != transferType) { return false; } SinglePixelPackedSampleModel sppsm = (SinglePixelPackedSampleModel) sm; // Now compare the specific masks int[] bitMasks = sppsm.getBitMasks(); if (bitMasks.length != maskArray.length) { return false; } /* compare 'effective' masks only, i.e. only part of the mask * which fits the capacity of the transfer type. */ int maxMask = (int)((1L << DataBuffer.getDataTypeSize(transferType)) - 1); for (int i=0; i < bitMasks.length; i++) { if ((maxMask & bitMasks[i]) != (maxMask & maskArray[i])) { return false; } } return true; } /** * Returns a {@link WritableRaster} representing the alpha channel of * an image, extracted from the input <code>WritableRaster</code>. * This method assumes that <code>WritableRaster</code> objects * associated with this <code>ColorModel</code> store the alpha band, * if present, as the last band of image data. Returns <code>null</code> * if there is no separate spatial alpha channel associated with this * <code>ColorModel</code>. This method creates a new * <code>WritableRaster</code>, but shares the data array. * @param raster a <code>WritableRaster</code> containing an image * @return a <code>WritableRaster</code> that represents the alpha * channel of the image contained in <code>raster</code>. */ public WritableRaster getAlphaRaster(WritableRaster raster) { if (hasAlpha() == false) { return null; } int x = raster.getMinX(); int y = raster.getMinY(); int[] band = new int[1]; band[0] = raster.getNumBands() - 1; return raster.createWritableChild(x, y, raster.getWidth(), raster.getHeight(), x, y, band); } /** * Tests if the specified <code>Object</code> is an instance * of <code>PackedColorModel</code> and equals this * <code>PackedColorModel</code>. * @param obj the <code>Object</code> to test for equality * @return <code>true</code> if the specified <code>Object</code> * is an instance of <code>PackedColorModel</code> and equals this * <code>PackedColorModel</code>; <code>false</code> otherwise. */ public boolean equals(Object obj) { if (!(obj instanceof PackedColorModel)) { return false; } if (!super.equals(obj)) { return false; } PackedColorModel cm = (PackedColorModel) obj; int numC = cm.getNumComponents(); if (numC != numComponents) { return false; } for(int i=0; i < numC; i++) { if (maskArray[i] != cm.getMask(i)) { return false; } } return true; } private final static int[] createBitsArray(int[]colorMaskArray, int alphaMask) { int numColors = colorMaskArray.length; int numAlpha = (alphaMask == 0 ? 0 : 1); int[] arr = new int[numColors+numAlpha]; for (int i=0; i < numColors; i++) { arr[i] = countBits(colorMaskArray[i]); if (arr[i] < 0) { throw new IllegalArgumentException("Noncontiguous color mask (" + Integer.toHexString(colorMaskArray[i])+ "at index "+i); } } if (alphaMask != 0) { arr[numColors] = countBits(alphaMask); if (arr[numColors] < 0) { throw new IllegalArgumentException("Noncontiguous alpha mask (" + Integer.toHexString(alphaMask)); } } return arr; } private final static int[] createBitsArray(int rmask, int gmask, int bmask, int amask) { int[] arr = new int[3 + (amask == 0 ? 0 : 1)]; arr[0] = countBits(rmask); arr[1] = countBits(gmask); arr[2] = countBits(bmask); if (arr[0] < 0) { throw new IllegalArgumentException("Noncontiguous red mask (" + Integer.toHexString(rmask)); } else if (arr[1] < 0) { throw new IllegalArgumentException("Noncontiguous green mask (" + Integer.toHexString(gmask)); } else if (arr[2] < 0) { throw new IllegalArgumentException("Noncontiguous blue mask (" + Integer.toHexString(bmask)); } if (amask != 0) { arr[3] = countBits(amask); if (arr[3] < 0) { throw new IllegalArgumentException("Noncontiguous alpha mask (" + Integer.toHexString(amask)); } } return arr; } private final static int countBits(int mask) { int count = 0; if (mask != 0) { while ((mask & 1) == 0) { mask >>>= 1; } while ((mask & 1) == 1) { mask >>>= 1; count++; } } if (mask != 0) { return -1; } return count; } }
⏎ java/awt/image/PackedColorModel.java
Or download all of them as a single archive file:
File name: jre-rt-java-1.8.0_191-src.zip File size: 6664831 bytes Release date: 2018-10-28 Download
⇒ JRE 8 rt.jar - javax.* Package Source Code
2023-08-23, 247545👍, 4💬
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