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JDK 1.1 Source Code Directory
JDK 1.1 source code directory contains Java source code for JDK 1.1 core classes:
"C:\fyicenter\jdk-1.1.8\src".
Here is the list of Java classes of the JDK 1.1 source code:
✍: FYIcenter
⏎ java/awt/image/RGBImageFilter.java
/* * @(#)RGBImageFilter.java 1.13 01/12/10 * * Copyright 2002 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */ package java.awt.image; import java.awt.image.ImageConsumer; import java.awt.image.ColorModel; /** * This class provides an easy way to create an ImageFilter which modifies * the pixels of an image in the default RGB ColorModel. It is meant to * be used in conjunction with a FilteredImageSource object to produce * filtered versions of existing images. It is an abstract class that * provides the calls needed to channel all of the pixel data through a * single method which converts pixels one at a time in the default RGB * ColorModel regardless of the ColorModel being used by the ImageProducer. * The only method which needs to be defined to create a useable image * filter is the filterRGB method. Here is an example of a definition * of a filter which swaps the red and blue components of an image: * <pre> * * class RedBlueSwapFilter extends RGBImageFilter { * public RedBlueSwapFilter() { * // The filter's operation does not depend on the * // pixel's location, so IndexColorModels can be * // filtered directly. * canFilterIndexColorModel = true; * } * * public int filterRGB(int x, int y, int rgb) { * return ((rgb & 0xff00ff00) * | ((rgb & 0xff0000) >> 16) * | ((rgb & 0xff) << 16)); * } * } * * </pre> * * @see FilteredImageSource * @see ImageFilter * @see ColorModel#getRGBdefault * * @version 1.13 12/10/01 * @author Jim Graham */ public abstract class RGBImageFilter extends ImageFilter { protected ColorModel origmodel; protected ColorModel newmodel; /** * This boolean indicates whether or not it is acceptable to apply * the color filtering of the filterRGB method to the color table * entries of an IndexColorModel object in lieu of pixel by pixel * filtering. Subclasses should set this variable to true in their * constructor if their filterRGB method does not depend on the * coordinate of the pixel being filtered. * @see #substituteColorModel * @see #filterRGB * @see IndexColorModel */ protected boolean canFilterIndexColorModel; /** * If the ColorModel is an IndexColorModel, and the subclass has * set the canFilterIndexColorModel flag to true, we substitute * a filtered version of the color model here and wherever * that original ColorModel object appears in the setPixels methods. Otherwise * overrides the default ColorModel used by the ImageProducer and * specifies the default RGB ColorModel instead. * @see ImageConsumer * @see ColorModel#getRGBdefault */ public void setColorModel(ColorModel model) { if (canFilterIndexColorModel && (model instanceof IndexColorModel)) { ColorModel newcm = filterIndexColorModel((IndexColorModel)model); substituteColorModel(model, newcm); consumer.setColorModel(newcm); } else { consumer.setColorModel(ColorModel.getRGBdefault()); } } /** * Registers two ColorModel objects for substitution. If the oldcm * is encountered during any of the setPixels methods, the newcm * is substituted and the pixels passed through * untouched (but with the new ColorModel object). * @param oldcm the ColorModel object to be replaced on the fly * @param newcm the ColorModel object to replace oldcm on the fly */ public void substituteColorModel(ColorModel oldcm, ColorModel newcm) { origmodel = oldcm; newmodel = newcm; } /** * Filters an IndexColorModel object by running each entry in its * color tables through the filterRGB function that RGBImageFilter * subclasses must provide. Uses coordinates of -1 to indicate that * a color table entry is being filtered rather than an actual * pixel value. * @param icm the IndexColorModel object to be filtered * @return a new IndexColorModel representing the filtered colors */ public IndexColorModel filterIndexColorModel(IndexColorModel icm) { int mapsize = icm.getMapSize(); byte r[] = new byte[mapsize]; byte g[] = new byte[mapsize]; byte b[] = new byte[mapsize]; byte a[] = new byte[mapsize]; icm.getReds(r); icm.getGreens(g); icm.getBlues(b); icm.getAlphas(a); int trans = icm.getTransparentPixel(); boolean needalpha = false; for (int i = 0; i < mapsize; i++) { int rgb = filterRGB(-1, -1, icm.getRGB(i)); a[i] = (byte) (rgb >> 24); if (a[i] != ((byte)0xff) && i != trans) { needalpha = true; } r[i] = (byte) (rgb >> 16); g[i] = (byte) (rgb >> 8); b[i] = (byte) (rgb >> 0); } if (needalpha) { return new IndexColorModel(icm.getPixelSize(), mapsize, r, g, b, a); } else { return new IndexColorModel(icm.getPixelSize(), mapsize, r, g, b, trans); } } /** * Filters a buffer of pixels in the default RGB ColorModel by passing * them one by one through the filterRGB method. * @see ColorModel#getRGBdefault * @see #filterRGB */ public void filterRGBPixels(int x, int y, int w, int h, int pixels[], int off, int scansize) { int index = off; for (int cy = 0; cy < h; cy++) { for (int cx = 0; cx < w; cx++) { pixels[index] = filterRGB(x + cx, y + cy, pixels[index]); index++; } index += scansize - w; } consumer.setPixels(x, y, w, h, ColorModel.getRGBdefault(), pixels, off, scansize); } /** * If the ColorModel object is the same one that has already * been converted, then simply passes the pixels through with the * converted ColorModel. Otherwise converts the buffer of byte * pixels to the default RGB ColorModel and passes the converted * buffer to the filterRGBPixels method to be converted one by one. * @see ColorModel#getRGBdefault * @see #filterRGBPixels */ public void setPixels(int x, int y, int w, int h, ColorModel model, byte pixels[], int off, int scansize) { if (model == origmodel) { consumer.setPixels(x, y, w, h, newmodel, pixels, off, scansize); } else { int filteredpixels[] = new int[w]; int index = off; for (int cy = 0; cy < h; cy++) { for (int cx = 0; cx < w; cx++) { filteredpixels[cx] = model.getRGB((pixels[index] & 0xff)); index++; } index += scansize - w; filterRGBPixels(x, y + cy, w, 1, filteredpixels, 0, w); } } } /** * If the ColorModel object is the same one that has already * been converted, then simply passes the pixels through with the * converted ColorModel, otherwise converts the buffer of integer * pixels to the default RGB ColorModel and passes the converted * buffer to the filterRGBPixels method to be converted one by one. * Converts a buffer of integer pixels to the default RGB ColorModel * and passes the converted buffer to the filterRGBPixels method. * @see ColorModel#getRGBdefault * @see #filterRGBPixels */ public void setPixels(int x, int y, int w, int h, ColorModel model, int pixels[], int off, int scansize) { if (model == origmodel) { consumer.setPixels(x, y, w, h, newmodel, pixels, off, scansize); } else { int filteredpixels[] = new int[w]; int index = off; for (int cy = 0; cy < h; cy++) { for (int cx = 0; cx < w; cx++) { filteredpixels[cx] = model.getRGB(pixels[index]); index++; } index += scansize - w; filterRGBPixels(x, y + cy, w, 1, filteredpixels, 0, w); } } } /** * Subclasses must specify a method to convert a single input pixel * in the default RGB ColorModel to a single output pixel. * @see ColorModel#getRGBdefault * @see #filterRGBPixels */ public abstract int filterRGB(int x, int y, int rgb); }
⏎ java/awt/image/RGBImageFilter.java
Or download all of them as a single archive file:
File name: jdk-1.1.8-src.zip File size: 1574187 bytes Release date: 2018-11-16 Download
⇒ Backup JDK 1.1 Installation Directory
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