--- /dev/null 2013-11-28 18:13:27.000000000 +0400 +++ new/src/share/classes/sun/awt/image/MultiResolutionImage.java 2013-11-28 18:13:27.000000000 +0400 @@ -0,0 +1,83 @@ +/* + * Copyright (c) 2013, 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 sun.awt.image; + +import java.awt.Image; +import java.util.List; + +/** + * This interface is designed to provide a set of images at various resolutions. + * + * The MultiResolutionImage interface should be implemented by any + * class whose instances are intended to provide image resolution variants + * according to the given image width and height. + * + * For example, + *
+ * {@code
+ *  public class ScaledImage extends BufferedImage
+ *         implements MultiResolutionImage {
+ *
+ *    @Override
+ *    public Image getResolutionVariant(int width, int height) {
+ *      return ((width <= getWidth() && height <= getHeight()))
+ *             ? this : highResolutionImage;
+ *    }
+ *
+ *    @Override
+ *    public List getResolutionVariants() {
+ *        return Arrays.asList(this, highResolutionImage);
+ *    }
+ *  }
+ * }
+ * + * It is recommended to cache image variants for performance reasons. + * + * WARNING: This class is an implementation detail. This API may change + * between update release, and it may even be removed or be moved in some other + * package(s)/class(es). + */ +public interface MultiResolutionImage { + + /** + * Provides an image with necessary resolution which best fits to the given + * image width and height. + * + * @param width the desired image resolution width. + * @param height the desired image resolution height. + * @return image resolution variant. + * + * @since JDK1.8 + */ + public Image getResolutionVariant(int width, int height); + + /** + * Gets list of all resolution variants including the base image + * + * @return list of resolution variants. + * @since JDK1.8 + */ + public List getResolutionVariants(); +}