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Java > Open Source Codes > org > apache > batik > dom > svg > SVGPreserveAspectRatioSupport


1 /*
2
3    Copyright 2004 The Apache Software Foundation
4
5    Licensed under the Apache License, Version 2.0 (the "License");
6    you may not use this file except in compliance with the License.
7    You may obtain a copy of the License at
8
9        http://www.apache.org/licenses/LICENSE-2.0
10
11    Unless required by applicable law or agreed to in writing, software
12    distributed under the License is distributed on an "AS IS" BASIS,
13    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14    See the License for the specific language governing permissions and
15    limitations under the License.
16
17  */
18
19 package org.apache.batik.dom.svg;
20
21 import org.apache.batik.util.SVGConstants;
22 import org.w3c.dom.svg.SVGAnimatedPreserveAspectRatio;
23
24 /**
25  * Support for the 'preserveAspectRatio' interface on the SVG element.
26  * @author Tonny Kohar
27  */
28 public class SVGPreserveAspectRatioSupport {
29     /**
30      * To implement getPreserveAspectRatio.
31      * Returns the value of the 'preserveAspectRatio' attribute of the
32      * given element.
33      */
34     public static SVGAnimatedPreserveAspectRatio
35         getPreserveAspectRatio(AbstractElement elt) {
36         SVGOMAnimatedPreserveAspectRatio ret;
37         ret = (SVGOMAnimatedPreserveAspectRatio)elt.getLiveAttributeValue
38             (null, SVGConstants.SVG_PRESERVE_ASPECT_RATIO_ATTRIBUTE);
39
40         if (ret == null) {
41             ret = new SVGOMAnimatedPreserveAspectRatio(elt);
42             elt.putLiveAttributeValue
43                 (null, SVGConstants.SVG_PRESERVE_ASPECT_RATIO_ATTRIBUTE, ret);
44         }
45         return ret;
46     }
47 }
48
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