icuSources/layout/LigatureSubstitution.h

   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