+++ /dev/null
-/* Copyright (C) 2000, 2002 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., 59 Temple Place, Suite 330, Boston, MA
-02111-1307 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 java.awt.Point;
-import java.awt.color.ColorSpace;
-import gnu.java.awt.BitMaskExtent;
-
-/**
- * @author Rolf W. Rasmussen <rolfwr@ii.uib.no>
- */
-public abstract class PackedColorModel extends ColorModel
-{
- private int masks[];
-
- /* Package accessibility, the DirectColorModel needs this array */
- int shifts[];
-
- public PackedColorModel(ColorSpace cspace, int pixelBits,
- int[] colorMaskArray, int alphaMask,
- boolean isAlphaPremultiplied,
- int transparency,
- int transferType)
- {
- super(pixelBits, calcBitsPerComponent(colorMaskArray, alphaMask),
- cspace, (alphaMask != 0), isAlphaPremultiplied, transparency,
- transferType);
- initMasks(colorMaskArray, alphaMask);
- if ((pixelBits<1) || (pixelBits>32)) {
- throw new IllegalArgumentException("pixels per bits must be " +
- "in the range [1, 32]");
- }
- }
-
- private static int[] calcBitsPerComponent(int[] colorMaskArray,
- int alphaMask)
- {
- int numComponents = colorMaskArray.length;
- if (alphaMask != 0) numComponents++;
-
- int[] bitsPerComponent = new int[numComponents];
-
- BitMaskExtent extent = new BitMaskExtent();
- for (int b=0; b<colorMaskArray.length; b++)
- {
- extent.setMask(colorMaskArray[b]);
- bitsPerComponent[b] = extent.bitWidth;
- }
- if (alphaMask != 0)
- {
- extent.setMask(alphaMask);
- bitsPerComponent[numComponents-1] = extent.bitWidth;
- }
- return bitsPerComponent;
- }
-
- /** Initializes the masks.
- *
- * @return an array containing the number of bits per color
- * component.
- */
- private void initMasks(int[] colorMaskArray, int alphaMask)
- {
- int numComponents = colorMaskArray.length;
- if (alphaMask == 0)
- {
- masks = colorMaskArray;
- }
- else
- {
- masks = new int[numComponents+1];
- System.arraycopy(colorMaskArray, 0,
- masks, 0,
- numComponents);
- masks[numComponents++] = alphaMask;
- }
-
- shifts = new int[numComponents];
-
- // Bit field handling have been moved to a utility class
- BitMaskExtent extent = new BitMaskExtent();
- for (int b=0; b<numComponents; b++)
- {
- extent.setMask(masks[b]);
- shifts[b] = extent.leastSignificantBit;
- }
- }
-
- public PackedColorModel(ColorSpace cspace, int pixelBits,
- int rmask, int gmask, int bmask,
- int amask, boolean isAlphaPremultiplied,
- int transparency,
- int transferType)
- {
- this(cspace, pixelBits, makeColorMaskArray(rmask, gmask, bmask),
- amask, isAlphaPremultiplied, transparency, transferType);
- }
-
- /* TODO: If there is a alpha mask, it is inefficient to create a
- color mask array that will be discarded when the alpha mask is
- appended. We should probably create a private constructor that
- takes a complete array of masks (color+alpha) as an
- argument. */
-
- private static int[] makeColorMaskArray(int rmask, int gmask, int bmask)
- {
- int[] colorMaskArray = { rmask, gmask, bmask };
- return colorMaskArray;
- }
-
- public final int getMask(int index)
- {
- return masks[index];
- }
-
- public final int[] getMasks()
- {
- return masks;
- }
-
- public SampleModel createCompatibleSampleModel(int w, int h)
- {
- return new SinglePixelPackedSampleModel(transferType, w, h, masks);
- }
-
- public boolean isCompatibleSampleModel(SampleModel sm)
- {
- if (!super.isCompatibleSampleModel(sm)) return false;
- if (!(sm instanceof SinglePixelPackedSampleModel)) return false;
-
- SinglePixelPackedSampleModel sppsm =
- (SinglePixelPackedSampleModel) sm;
- return java.util.Arrays.equals(sppsm.getBitMasks(), masks);
- }
-
- public WritableRaster getAlphaRaster(WritableRaster raster) {
- if (!hasAlpha()) return null;
-
- SampleModel sm = raster.getSampleModel();
- int[] alphaBand = { sm.getNumBands() - 1 };
- SampleModel alphaModel = sm.createSubsetSampleModel(alphaBand);
- DataBuffer buffer = raster.getDataBuffer();
- Point origin = new Point(0, 0);
- return Raster.createWritableRaster(alphaModel, buffer, origin);
- }
-
- public boolean equals(Object obj)
- {
- if (!super.equals(obj)) return false;
- if (!(obj instanceof PackedColorModel)) return false;
-
- PackedColorModel other = (PackedColorModel) obj;
-
- return java.util.Arrays.equals(masks, other.masks);
- }
-}
projects / msp430-gcc.git / blobdiff