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


1 /*
2
3    Copyright 2001,2003 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  *
25  * @author <a HREF="mailto:david@steadystate.co.uk">David Schweinsberg</a>
26  * @version $Id: KernSubtable.java,v 1.4 2004/08/18 07:15:21 vhardy Exp $
27  */
28 public abstract class KernSubtable {
29
30     /** Creates new KernSubtable */
31     protected KernSubtable() {
32     }
33     
34     public abstract int getKerningPairCount();
35
36     public abstract KerningPair getKerningPair(int i);
37
38     public static KernSubtable read(RandomAccessFile JavaDoc raf) throws IOException JavaDoc {
39         KernSubtable table = null;
40         /* int version =*/ raf.readUnsignedShort();
41         /* int length =*/ raf.readUnsignedShort();
42         int coverage = raf.readUnsignedShort();
43         int format = coverage >> 8;
44         
45         switch (format) {
46         case 0:
47             table = new KernSubtableFormat0(raf);
48             break;
49         case 2:
50             table = new KernSubtableFormat2(raf);
51             break;
52         default:
53             break;
54         }
55         return table;
56     }
57
58 }
59
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