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Diffstat (limited to 'awt/java/awt/image/RGBImageFilter.java')
| -rw-r--r-- | awt/java/awt/image/RGBImageFilter.java | 195 |
1 files changed, 0 insertions, 195 deletions
diff --git a/awt/java/awt/image/RGBImageFilter.java b/awt/java/awt/image/RGBImageFilter.java deleted file mode 100644 index f5fe5d9..0000000 --- a/awt/java/awt/image/RGBImageFilter.java +++ /dev/null @@ -1,195 +0,0 @@ -/* - * 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; - -/** - * The RGBImageFilter class represents a filter which modifies pixels of an - * image in the default RGB ColorModel. - * - * @since Android 1.0 - */ -public abstract class RGBImageFilter extends ImageFilter { - - /** - * The original model is the ColorModel to be replaced by the new model when - * substituteColorModel is called. - */ - protected ColorModel origmodel; - - /** - * The new model is the ColorModel with which to replace the original model - * when substituteColorModel is called. - */ - protected ColorModel newmodel; - - /** - * The canFilterIndexColorModel indicates if it is acceptable to apply the - * color filtering of the filterRGB method to the color table entries of an - * IndexColorModel object. - */ - protected boolean canFilterIndexColorModel; - - /** - * Instantiates a new RGBImageFilter. - */ - public RGBImageFilter() { - } - - /** - * Filters an IndexColorModel object by calling filterRGB function for each - * entry of IndexColorModel. - * - * @param icm - * the IndexColorModel to be filtered. - * @return the IndexColorModel. - */ - public IndexColorModel filterIndexColorModel(IndexColorModel icm) { - int transferType = icm.getTransferType(); - int bits = icm.getPixelSize(); - int mapSize = icm.getMapSize(); - int colorMap[] = new int[mapSize]; - int filteredColorMap[] = new int[mapSize]; - icm.getRGBs(colorMap); - int trans = -1; - boolean hasAlpha = false; - for (int i = 0; i < mapSize; i++) { - filteredColorMap[i] = filterRGB(-1, -1, colorMap[i]); - int alpha = filteredColorMap[i] >>> 24; - if (alpha != 0xff) { - if (!hasAlpha) { - hasAlpha = true; - } - if (alpha == 0 && trans < 0) { - trans = i; - } - } - } - - return new IndexColorModel(bits, mapSize, filteredColorMap, 0, hasAlpha, trans, - transferType); - } - - /** - * Replaces the original color model and the new one. - * - * @param oldcm - * the old ColorModel. - * @param newcm - * the new ColorModel. - */ - public void substituteColorModel(ColorModel oldcm, ColorModel newcm) { - origmodel = oldcm; - newmodel = newcm; - } - - @Override - public void setColorModel(ColorModel model) { - if (model instanceof IndexColorModel && canFilterIndexColorModel) { - IndexColorModel icm = (IndexColorModel)model; - ColorModel filteredModel = filterIndexColorModel(icm); - substituteColorModel(model, filteredModel); - consumer.setColorModel(filteredModel); - } else { - consumer.setColorModel(ColorModel.getRGBdefault()); - } - } - - @Override - public void setPixels(int x, int y, int w, int h, ColorModel model, int[] pixels, int off, - int scansize) { - - if (model == null || model == origmodel) { - consumer.setPixels(x, y, w, h, newmodel, pixels, off, scansize); - } else { - int rgbPixels[] = new int[w]; - for (int sy = y, pixelsOff = off; sy < y + h; sy++, pixelsOff += scansize) { - - for (int sx = x, idx = 0; sx < x + w; sx++, idx++) { - rgbPixels[idx] = model.getRGB(pixels[pixelsOff + idx]); - } - filterRGBPixels(x, sy, w, 1, rgbPixels, 0, w); - } - } - } - - @Override - public void setPixels(int x, int y, int w, int h, ColorModel model, byte[] pixels, int off, - int scansize) { - - if (model == null || model == origmodel) { - consumer.setPixels(x, y, w, h, newmodel, pixels, off, scansize); - } else { - int rgbPixels[] = new int[w]; - for (int sy = y, pixelsOff = off; sy < y + h; sy++, pixelsOff += scansize) { - - for (int sx = x, idx = 0; sx < x + w; sx++, idx++) { - rgbPixels[idx] = model.getRGB(pixels[pixelsOff + idx] & 0xff); - } - filterRGBPixels(x, sy, w, 1, rgbPixels, 0, w); - } - } - } - - /** - * Filters a region of pixels in the default RGB ColorModel by calling the - * filterRGB method for them. - * - * @param x - * the X coordinate of region. - * @param y - * the Y coordinate of region. - * @param w - * the width of region. - * @param h - * the height of region. - * @param pixels - * the pixels array. - * @param off - * the offset of array. - * @param scansize - * the distance between rows of pixels in the array. - */ - public void filterRGBPixels(int x, int y, int w, int h, int[] pixels, int off, int scansize) { - - for (int sy = y, lineOff = off; sy < y + h; sy++, lineOff += scansize) { - for (int sx = x, idx = 0; sx < x + w; sx++, idx++) { - pixels[lineOff + idx] = filterRGB(sx, sy, pixels[lineOff + idx]); - } - } - consumer.setPixels(x, y, w, h, ColorModel.getRGBdefault(), pixels, off, scansize); - } - - /** - * Converts a single input pixel in the default RGB ColorModel to a single - * output pixel. - * - * @param x - * the X pixel's coordinate. - * @param y - * the Y pixel's coordinate. - * @param rgb - * a pixel in the default RGB color model. - * @return a filtered pixel in the default RGB color model. - */ - public abstract int filterRGB(int x, int y, int rgb); - -} |