1 /*
2  *
3  * (C) Copyright IBM Corp. and Others 1998-2013 - All Rights Reserved
4  *
5  */
6 
7 #ifndef __LIGATURESUBSTITUTION_H
8 #define __LIGATURESUBSTITUTION_H
9 
10 /**
11  * \file
12  * \internal
13  */
14 
15 #include "LETypes.h"
16 #include "LayoutTables.h"
17 #include "StateTables.h"
18 #include "MorphTables.h"
19 #include "MorphStateTables.h"
20 
21 U_NAMESPACE_BEGIN
22 
23 struct LigatureSubstitutionHeader : MorphStateTableHeader
24 {
25     ByteOffset ligatureActionTableOffset;
26     ByteOffset componentTableOffset;
27     ByteOffset ligatureTableOffset;
28 };
29 
30 struct LigatureSubstitutionHeader2 : MorphStateTableHeader2
31 {
32     le_uint32 ligActionOffset;
33     le_uint32 componentOffset;
34     le_uint32 ligatureOffset;
35 };
36 
37 enum LigatureSubstitutionFlags
38 {
39     lsfSetComponent     = 0x8000,
40     lsfDontAdvance      = 0x4000,
41     lsfActionOffsetMask = 0x3FFF, // N/A in morx
42     lsfPerformAction    = 0x2000
43 };
44 
45 struct LigatureSubstitutionStateEntry : StateEntry
46 {
47 };
48 
49 struct LigatureSubstitutionStateEntry2
50 {
51     le_uint16 nextStateIndex;
52     le_uint16 entryFlags;
53     le_uint16 ligActionIndex;
54 };
55 
56 typedef le_uint32 LigatureActionEntry;
57 
58 enum LigatureActionFlags
59 {
60     lafLast                 = 0x80000000,
61     lafStore                = 0x40000000,
62     lafComponentOffsetMask  = 0x3FFFFFFF
63 };
64 
65 U_NAMESPACE_END
66 #endif
67