Home | History | Annotate | Download | only in layout 
      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