/* * 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.image; /**  * An interface for objects that wish to be informed when tiles  * of a WritableRenderedImage become modifiable by some writer via  * a call to getWritableTile, and when they become unmodifiable via  * the last call to releaseWritableTile.  *  * @see WritableRenderedImage  *  * @author Thomas DeWeese  * @author Daniel Rice  */public interface TileObserver {   /**    * A tile is about to be updated (it is either about to be grabbed    * for writing, or it is being released from writing).    *    * @param source the image that owns the tile.    * @param tileX the X index of the tile that is being updated.    * @param tileY the Y index of the tile that is being updated.    * @param willBeWritable  If true, the tile will be grabbed for writing;    *                        otherwise it is being released.    */    public void tileUpdate(WritableRenderedImage source,                           int tileX, int tileY,                           boolean willBeWritable); }