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| 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 | package java.awt; | ||
| 27 | |||
| 28 | import java.awt.image.Raster; | ||
| 29 | import java.awt.image.ColorModel; | ||
| 30 | |||
| 31 | /** | ||
| 32 | * The <code>PaintContext</code> interface defines the encapsulated | ||
| 33 | * and optimized environment to generate color patterns in device | ||
| 34 | * space for fill or stroke operations on a | ||
| 35 | * {@link Graphics2D}. The <code>PaintContext</code> provides | ||
| 36 | * the necessary colors for <code>Graphics2D</code> operations in the | ||
| 37 | * form of a {@link Raster} associated with a {@link ColorModel}. | ||
| 38 | * The <code>PaintContext</code> maintains state for a particular paint | ||
| 39 | * operation. In a multi-threaded environment, several | ||
| 40 | * contexts can exist simultaneously for a single {@link Paint} object. | ||
| 41 | * @see Paint | ||
| 42 | */ | ||
| 43 | |||
| 44 | public interface PaintContext { | ||
| 45 | /** | ||
| 46 | * Releases the resources allocated for the operation. | ||
| 47 | */ | ||
| 48 | public void dispose(); | ||
| 49 | |||
| 50 | /** | ||
| 51 | * Returns the <code>ColorModel</code> of the output. Note that | ||
| 52 | * this <code>ColorModel</code> might be different from the hint | ||
| 53 | * specified in the | ||
| 54 | * {@link Paint#createContext(ColorModel, Rectangle, Rectangle2D, | ||
| 55 | AffineTransform, RenderingHints) createContext} method of | ||
| 56 | * <code>Paint</code>. Not all <code>PaintContext</code> objects are | ||
| 57 | * capable of generating color patterns in an arbitrary | ||
| 58 | * <code>ColorModel</code>. | ||
| 59 | * @return the <code>ColorModel</code> of the output. | ||
| 60 | */ | ||
| 61 | ColorModel getColorModel(); | ||
| 62 | |||
| 63 | /** | ||
| 64 | * Returns a <code>Raster</code> containing the colors generated for | ||
| 65 | * the graphics operation. | ||
| 66 | * @param x the x coordinate of the area in device space | ||
| 67 | * for which colors are generated. | ||
| 68 | * @param y the y coordinate of the area in device space | ||
| 69 | * for which colors are generated. | ||
| 70 | * @param w the width of the area in device space | ||
| 71 | * @param h the height of the area in device space | ||
| 72 | * @return a <code>Raster</code> representing the specified | ||
| 73 | * rectangular area and containing the colors generated for | ||
| 74 | * the graphics operation. | ||
| 75 | */ | ||
| 76 | Raster getRaster(int x, | ||
| 77 | int y, | ||
| 78 | int w, | ||
| 79 | int h); | ||
| 80 | |||
| 81 | } | ||