icuSources/layout/PairPositioningSubtables.h

   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