icuSources/layout/ClassDefinitionTables.h

   1 /*
   2  *
   3  * (C) Copyright IBM Corp. 1998-2013 - All Rights Reserved
   4  *
   5  */
   6
   7 #ifndef __CLASSDEFINITIONTABLES_H
   8 #define __CLASSDEFINITIONTABLES_H
   9
  10 /**
  11  * \file
  12  * \internal
  13  */
  14
  15 #include "LETypes.h"
  16 #include "OpenTypeTables.h"
  17
  18 U_NAMESPACE_BEGIN
  19
  20 struct ClassDefinitionTable
  21 {
  22     le_uint16 classFormat;
  23
  24     le_int32  getGlyphClass(const LETableReference &base, LEGlyphID glyphID, LEErrorCode &success) const;
  25     le_bool   hasGlyphClass(const LETableReference &base, le_int32 glyphClass, LEErrorCode &success) const;
  26
  27   le_int32 getGlyphClass(LEGlyphID glyphID) const {
  28     LETableReference base((const le_uint8*)this);
  29     LEErrorCode ignored = LE_NO_ERROR;
  30     return getGlyphClass(base,glyphID,ignored);
  31   }
  32
  33   le_bool hasGlyphClass(le_int32 glyphClass) const {
  34     LETableReference base((const le_uint8*)this);
  35     LEErrorCode ignored = LE_NO_ERROR;
  36     return hasGlyphClass(base,glyphClass,ignored);
  37   }
  38 };
  39
  40 struct ClassDefFormat1Table : ClassDefinitionTable
  41 {
  42     TTGlyphID  startGlyph;
  43     le_uint16  glyphCount;
  44     le_uint16  classValueArray[ANY_NUMBER];
  45
  46     le_int32 getGlyphClass(const LETableReference &base, LEGlyphID glyphID, LEErrorCode &success) const;
  47     le_bool  hasGlyphClass(const LETableReference &base, le_int32 glyphClass, LEErrorCode &success) const;
  48 };
  49 LE_VAR_ARRAY(ClassDefFormat1Table, classValueArray)
  50
  51
  52 struct ClassRangeRecord
  53 {
  54     TTGlyphID start;
  55     TTGlyphID end;
  56     le_uint16 classValue;
  57 };
  58
  59 struct ClassDefFormat2Table : ClassDefinitionTable
  60 {
  61     le_uint16        classRangeCount;
  62     GlyphRangeRecord classRangeRecordArray[ANY_NUMBER];
  63
  64     le_int32 getGlyphClass(const LETableReference &base, LEGlyphID glyphID, LEErrorCode &success) const;
  65     le_bool hasGlyphClass(const LETableReference &base, le_int32 glyphClass, LEErrorCode &success) const;
  66 };
  67 LE_VAR_ARRAY(ClassDefFormat2Table, classRangeRecordArray)
  68
  69 U_NAMESPACE_END
  70 #endif