1/* 2 * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 27 28package java.awt; 29 30import java.awt.image.ColorModel; 31import java.awt.image.Raster; 32import java.awt.image.WritableRaster; 33import sun.awt.image.IntegerComponentRaster; 34import java.util.Arrays; 35 36class ColorPaintContext implements PaintContext { 37 int color; 38 WritableRaster savedTile; 39 40 protected ColorPaintContext(int color, ColorModel cm) { 41 this.color = color; 42 } 43 44 public void dispose() { 45 } 46 47 /* 48 * Returns the RGB value representing the color in the default sRGB 49 * {@link ColorModel}. 50 * (Bits 24-31 are alpha, 16-23 are red, 8-15 are green, 0-7 are 51 * blue). 52 * @return the RGB value of the color in the default sRGB 53 * {@code ColorModel}. 54 * @see java.awt.image.ColorModel#getRGBdefault 55 * @see #getRed 56 * @see #getGreen 57 * @see #getBlue 58 */ 59 int getRGB() { 60 return color; 61 } 62 63 public ColorModel getColorModel() { 64 return ColorModel.getRGBdefault(); 65 } 66 67 public synchronized Raster getRaster(int x, int y, int w, int h) { 68 WritableRaster t = savedTile; 69 70 if (t == null || w > t.getWidth() || h > t.getHeight()) { 71 t = getColorModel().createCompatibleWritableRaster(w, h); 72 IntegerComponentRaster icr = (IntegerComponentRaster) t; 73 Arrays.fill(icr.getDataStorage(), color); 74 // Note - markDirty is probably unnecessary since icr is brand new 75 icr.markDirty(); 76 if (w <= 64 && h <= 64) { 77 savedTile = t; 78 } 79 } 80 81 return t; 82 } 83} 84