1 /*
2  *
3  * (C) Copyright IBM Corp. 1998-2013 - All Rights Reserved
4  *
5  */
6 
7 #ifndef __PAIRPOSITIONINGSUBTABLES_H
8 #define __PAIRPOSITIONINGSUBTABLES_H
9 
10 /**
11  * \file
12  * \internal
13  */
14 
15 #include "LETypes.h"
16 #include "LEFontInstance.h"
17 #include "OpenTypeTables.h"
18 #include "GlyphPositioningTables.h"
19 #include "ValueRecords.h"
20 #include "GlyphIterator.h"
21 
22 U_NAMESPACE_BEGIN
23 
24 // NOTE: ValueRecord has a variable size
25 struct PairValueRecord
26 {
27     TTGlyphID     secondGlyph;
28     ValueRecord valueRecord1;
29 //  ValueRecord valueRecord2;
30 };
31 
32 struct PairSetTable
33 {
34     le_uint16       pairValueCount;
35     PairValueRecord pairValueRecordArray[ANY_NUMBER];
36 };
37 LE_VAR_ARRAY(PairSetTable, pairValueRecordArray)
38 
39 struct PairPositioningSubtable : GlyphPositioningSubtable
40 {
41     ValueFormat valueFormat1;
42     ValueFormat valueFormat2;
43 
44     le_uint32  process(const LEReferenceTo<PairPositioningSubtable> &base, GlyphIterator *glyphIterator, const LEFontInstance *fontInstance, LEErrorCode &success) const;
45 };
46 
47 struct PairPositioningFormat1Subtable : PairPositioningSubtable
48 {
49     le_uint16   pairSetCount;
50     Offset      pairSetTableOffsetArray[ANY_NUMBER];
51 
52     le_uint32  process(const LEReferenceTo<PairPositioningFormat1Subtable> &base, GlyphIterator *glyphIterator, const LEFontInstance *fontInstance, LEErrorCode &success) const;
53 
54 private:
55     const PairValueRecord *findPairValueRecord(TTGlyphID glyphID, const PairValueRecord *records,
56         le_uint16 recordCount, le_uint16 recordSize) const;
57 };
58 LE_VAR_ARRAY(PairPositioningFormat1Subtable, pairSetTableOffsetArray)
59 
60 // NOTE: ValueRecord has a variable size
61 struct Class2Record
62 {
63     ValueRecord valueRecord1;
64 //  ValueRecord valurRecord2;
65 };
66 
67 struct Class1Record
68 {
69     Class2Record class2RecordArray[ANY_NUMBER];
70 };
71 LE_VAR_ARRAY(Class1Record, class2RecordArray)
72 
73 struct PairPositioningFormat2Subtable : PairPositioningSubtable
74 {
75     Offset       classDef1Offset;
76     Offset       classDef2Offset;
77     le_uint16    class1Count;
78     le_uint16    class2Count;
79     Class1Record class1RecordArray[ANY_NUMBER];
80 
81     le_uint32  process(const LEReferenceTo<PairPositioningFormat2Subtable> &base, GlyphIterator *glyphIterator, const LEFontInstance *fontInstance, LEErrorCode &success) const;
82 };
83 LE_VAR_ARRAY(PairPositioningFormat2Subtable, class1RecordArray)
84 
85 U_NAMESPACE_END
86 #endif
87 
88 
89