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Java > Open Source Codes > org > apache > batik > svggen > font > table > RangeRecord


1 /*
2
3    Copyright 2001 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 package org.apache.batik.svggen.font.table;
19
20 import java.io.IOException JavaDoc;
21 import java.io.RandomAccessFile JavaDoc;
22
23 /**
24  * Coverage Index (GlyphID) = StartCoverageIndex + GlyphID - Start GlyphID
25  *
26  * @author <a HREF="mailto:david@steadystate.co.uk">David Schweinsberg</a>
27  * @version $Id: RangeRecord.java,v 1.3 2004/08/18 07:15:22 vhardy Exp $
28  */
29 public class RangeRecord {
30
31     private int start;
32     private int end;
33     private int startCoverageIndex;
34
35     /** Creates new RangeRecord */
36     public RangeRecord(RandomAccessFile JavaDoc raf) throws IOException JavaDoc {
37         start = raf.readUnsignedShort();
38         end = raf.readUnsignedShort();
39         startCoverageIndex = raf.readUnsignedShort();
40     }
41
42     public boolean isInRange(int glyphId) {
43         return (start <= glyphId && glyphId <= end);
44     }
45     
46     public int getCoverageIndex(int glyphId) {
47         if (isInRange(glyphId)) {
48             return startCoverageIndex + glyphId - start;
49         }
50         return -1;
51     }
52
53 }
54
55
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