1 /*
2 * Copyright (c) 2015, 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
47 * // return a resolution variant based on the given destination image size
48 * }
49 *
50 * public List<Image> getResolutionVariants() {
51 * return Collections.unmodifiableList(Arrays.asList(resolutionVariants));
52 * }
53 *
54 * protected Image getBaseImage() {
55 * return resolutionVariants[0];
56 * }
57 * }
58 * } </pre>
59 *
60 * @see java.awt.Image
61 * @see java.awt.image.MultiResolutionImage
62 *
63 * @since 9
64 */
65 public abstract class AbstractMultiResolutionImage extends java.awt.Image
66 implements MultiResolutionImage {
67
68 /**
69 * This method simply delegates to the same method on the base image and
70 * it is equivalent to: {@code getBaseImage().getWidth(observer)}.
71 *
72 * @return the width of the base image, or -1 if the width is not yet known
73 * @see #getBaseImage()
74 *
75 * @since 9
76 */
77 @Override
78 public int getWidth(ImageObserver observer) {
79 return getBaseImage().getWidth(observer);
80 }
81
82 /**
83 * This method simply delegates to the same method on the base image and
84 * it is equivalent to: {@code getBaseImage().getHeight(observer)}.
85 *
86 * @return the height of the base image, or -1 if the height is not yet known
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1 /*
2 * Copyright (c) 2015, 2020, 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
47 * // return a resolution variant based on the given destination image size
48 * }
49 *
50 * public List<Image> getResolutionVariants() {
51 * return Collections.unmodifiableList(Arrays.asList(resolutionVariants));
52 * }
53 *
54 * protected Image getBaseImage() {
55 * return resolutionVariants[0];
56 * }
57 * }
58 * } </pre>
59 *
60 * @see java.awt.Image
61 * @see java.awt.image.MultiResolutionImage
62 *
63 * @since 9
64 */
65 public abstract class AbstractMultiResolutionImage extends java.awt.Image
66 implements MultiResolutionImage {
67
68 /**
69 * Creates an {@code AbstractMultiResolutionImage}.
70 */
71 protected AbstractMultiResolutionImage() {}
72
73 /**
74 * This method simply delegates to the same method on the base image and
75 * it is equivalent to: {@code getBaseImage().getWidth(observer)}.
76 *
77 * @return the width of the base image, or -1 if the width is not yet known
78 * @see #getBaseImage()
79 *
80 * @since 9
81 */
82 @Override
83 public int getWidth(ImageObserver observer) {
84 return getBaseImage().getWidth(observer);
85 }
86
87 /**
88 * This method simply delegates to the same method on the base image and
89 * it is equivalent to: {@code getBaseImage().getHeight(observer)}.
90 *
91 * @return the height of the base image, or -1 if the height is not yet known
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