icuSources/layout/PairPositioningSubtables.h

   1 /*
   2  *
   3  * (C) Copyright IBM Corp. 1998-2004 - 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
  38 struct PairPositioningSubtable : GlyphPositioningSubtable
  39 {
  40     ValueFormat valueFormat1;
  41     ValueFormat valueFormat2;
  42
  43     le_uint32  process(GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const;
  44 };
  45
  46 struct PairPositioningFormat1Subtable : PairPositioningSubtable
  47 {
  48     le_uint16   pairSetCount;
  49     Offset      pairSetTableOffsetArray[ANY_NUMBER];
  50
  51     le_uint32  process(GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const;
  52
  53 private:
  54     const PairValueRecord *findPairValueRecord(TTGlyphID glyphID, const PairValueRecord *records,
  55         le_uint16 recordCount, le_uint16 recordSize) const;
  56 };
  57
  58 // NOTE: ValueRecord has a variable size
  59 struct Class2Record
  60 {
  61     ValueRecord valueRecord1;
  62 //  ValueRecord valurRecord2;
  63 };
  64
  65 struct Class1Record
  66 {
  67     Class2Record class2RecordArray[ANY_NUMBER];
  68 };
  69
  70 struct PairPositioningFormat2Subtable : PairPositioningSubtable
  71 {
  72     Offset       classDef1Offset;
  73     Offset       classDef2Offset;
  74     le_uint16    class1Count;
  75     le_uint16    class2Count;
  76     Class1Record class1RecordArray[ANY_NUMBER];
  77
  78     le_uint32  process(GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const;
  79 };
  80
  81 U_NAMESPACE_END
  82 #endif
  83
  84