| /* |
| * Copyright (c) 1997, 1998, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package java.awt; |
| |
| import java.awt.image.Raster; |
| import java.awt.image.WritableRaster; |
| |
| /** |
| * The {@code CompositeContext} interface defines the encapsulated |
| * and optimized environment for a compositing operation. |
| * {@code CompositeContext} objects maintain state for |
| * compositing operations. In a multi-threaded environment, several |
| * contexts can exist simultaneously for a single {@link Composite} |
| * object. |
| * @see Composite |
| */ |
| |
| public interface CompositeContext { |
| /** |
| * Releases resources allocated for a context. |
| */ |
| public void dispose(); |
| |
| /** |
| * Composes the two source {@link Raster} objects and |
| * places the result in the destination |
| * {@link WritableRaster}. Note that the destination |
| * can be the same object as either the first or second |
| * source. Note that {@code dstIn} and |
| * {@code dstOut} must be compatible with the |
| * {@code dstColorModel} passed to the |
| * {@link Composite#createContext(java.awt.image.ColorModel, java.awt.image.ColorModel, java.awt.RenderingHints) createContext} |
| * method of the {@code Composite} interface. |
| * @param src the first source for the compositing operation |
| * @param dstIn the second source for the compositing operation |
| * @param dstOut the {@code WritableRaster} into which the |
| * result of the operation is stored |
| * @see Composite |
| */ |
| public void compose(Raster src, |
| Raster dstIn, |
| WritableRaster dstOut); |
| |
| |
| } |