From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- libjava/classpath/java/awt/ColorPaintContext.java | 195 ++++++++++++++++++++++ 1 file changed, 195 insertions(+) create mode 100644 libjava/classpath/java/awt/ColorPaintContext.java (limited to 'libjava/classpath/java/awt/ColorPaintContext.java') diff --git a/libjava/classpath/java/awt/ColorPaintContext.java b/libjava/classpath/java/awt/ColorPaintContext.java new file mode 100644 index 000000000..5ba688617 --- /dev/null +++ b/libjava/classpath/java/awt/ColorPaintContext.java @@ -0,0 +1,195 @@ +/* ColorPaintContext.java -- context for painting solid colors + Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc. + +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., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 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; + +import java.awt.image.ColorModel; +import java.awt.image.Raster; + +/** + * This class provides a paint context which will fill a rectanglar region of + * a raster scan with the given color. However, it is not yet completely + * implemented. + * + * @author Eric Blake (ebb9@email.byu.edu) + */ +class ColorPaintContext implements PaintContext +{ + /** + * The color to fill any raster with. Package visible for use in + * SystemColor. + */ + final int color; + final ColorModel colorModel; + + private ColorRaster cachedRaster; + + + /** + * Create the context for a given color. + * + * @param colorRGB The solid color to use. + */ + ColorPaintContext(int colorRGB) + { + this(ColorModel.getRGBdefault(), colorRGB); + } + + /** + * Create the context for a given color. + * + * @param cm The color model of this context. + * @param colorRGB The solid color to use. + */ + ColorPaintContext(ColorModel cm,int colorRGB) + { + color = colorRGB; + colorModel = cm; + } + + /** + * Release the resources allocated for the paint. As the color is constant, + * there aren't any resources. + */ + public void dispose() + { + } + + /** + * Return the color model of this context. + * + * @return the context color model + */ + public ColorModel getColorModel() + { + return colorModel; + } + + /** + * Return a raster containing the colors for the graphics operation. + * + * @param x the x-coordinate, in device space + * @param y the y-coordinate, in device space + * @param width the width, in device space + * @param height the height, in device space + * @return a raster for the given area and color + */ + public Raster getRaster(int x, int y, int width, int height) + { + if( cachedRaster == null + || cachedRaster.getWidth() < width + || cachedRaster.getHeight() < height) + { + cachedRaster = new ColorRaster(colorModel, 0, 0, width, height, color); + } + return cachedRaster.createChild(0 ,0 ,width ,height ,0 ,0 , null); + } + + /** + * A ColorRaster is a raster that is completely filled with one color. The + * data layout is taken from the color model given to the constructor. + */ + private class ColorRaster extends Raster + { + + /** + * Create a raster that is compaltible with the given color model and + * filled with the given color. + * @param cm The color model for this raster. + * @param x The smallest horizontal corrdinate in the raster. + * @param y The smallest vertical coordinate in the raster. + * @param width The width of the raster. + * @param height The height of the raster. + * @param rgbPixel The RGB value of the color for this raster. + */ + ColorRaster(ColorModel cm,int x, int y, int width, int height, int rgbPixel) + { + super(cm.createCompatibleSampleModel(width,height),new Point(x,y)); + Object pixel = cm.getDataElements(rgbPixel,null); + int[] pixelComps = cm.getComponents(pixel, null, 0); + int[] d = (int[]) multiplyData(pixelComps,null,width*height); + getSampleModel().setPixels(0, 0, width, height, d, + dataBuffer); + } + + + + private Object multiplyData(Object src, Object dest, int factor) + { + Object from; + int srcLength = 0; + if (src instanceof byte[]) + { + srcLength = ((byte[])src).length; + + if (dest == null) dest = new byte[factor * srcLength]; + } + else if (src instanceof short[]) + { + srcLength = ((short[])src).length; + if (dest == null) dest = new short[factor * srcLength]; + } + else if (src instanceof int[]) + { + srcLength = ((int[]) src).length; + if (dest == null) dest = new int[factor * srcLength]; + } + else + { + throw new ClassCastException("Unknown data buffer type"); + } + + System.arraycopy(src,0,dest,0,srcLength); + + int count = 1; + while(count*2 < factor) + { + System.arraycopy(dest, 0, dest, count * srcLength, count*srcLength); + count *= 2; + } + + if(factor > count) + System.arraycopy(dest,0, dest, count * srcLength, + (factor - count) * srcLength ); + + return dest; + } + + } + +} // class ColorPaintContext -- cgit v1.2.3