1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements.  See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License.  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 /* $Id$ */
19 
20 package org.apache.fop.complexscripts.fonts;
21 
22 // CSOFF: LineLengthCheck
23 
24 /**
25  * <p>The <code>GlyphDefinitionSubtable</code> implements an abstract base of a glyph definition subtable,
26  * providing a default implementation of the <code>GlyphDefinition</code> interface.</p>
27  *
28  * <p>This work was originally authored by Glenn Adams (gadams@apache.org).</p>
29  */
30 public abstract class GlyphDefinitionSubtable extends GlyphSubtable implements GlyphDefinition {
31 
32     /**
33      * Instantiate a <code>GlyphDefinitionSubtable</code>.
34      * @param id subtable identifier
35      * @param sequence subtable sequence
36      * @param flags subtable flags
37      * @param format subtable format
38      * @param mapping subtable coverage table
39      */
GlyphDefinitionSubtable(String id, int sequence, int flags, int format, GlyphMappingTable mapping)40     protected GlyphDefinitionSubtable(String id, int sequence, int flags, int format, GlyphMappingTable mapping) {
41         super(id, sequence, flags, format, mapping);
42     }
43 
44     /** {@inheritDoc} */
getTableType()45     public int getTableType() {
46         return GlyphTable.GLYPH_TABLE_TYPE_DEFINITION;
47     }
48 
49     /** {@inheritDoc} */
getTypeName()50     public String getTypeName() {
51         return GlyphDefinitionTable.getLookupTypeName(getType());
52     }
53 
54     /** {@inheritDoc} */
usesReverseScan()55     public boolean usesReverseScan() {
56         return false;
57     }
58 
59     /** {@inheritDoc} */
hasDefinition(int gi)60     public boolean hasDefinition(int gi) {
61         GlyphCoverageMapping cvm;
62         if ((cvm = getCoverage()) != null) {
63             if (cvm.getCoverageIndex(gi) >= 0) {
64                 return true;
65             }
66         }
67         GlyphClassMapping clm;
68         if ((clm = getClasses()) != null) {
69             if (clm.getClassIndex(gi, 0) >= 0) {
70                 return true;
71             }
72         }
73         return false;
74     }
75 
76 }
77