icuSources/layout/GlyphSubstitutionTables.h

   1 /*
   2  * @(#)GlyphSubstitutionTables.h        1.9 00/03/15
   3  *
   4  * (C) Copyright IBM Corp. 1998-2003 - All Rights Reserved
   5  *
   6  */
   7
   8 #ifndef __GLYPHSUBSTITUTIONTABLES_H
   9 #define __GLYPHSUBSTITUTIONTABLES_H
  10
  11 /**
  12  * \file
  13  * \internal
  14  */
  15
  16 #include "LETypes.h"
  17 #include "LEGlyphFilter.h"
  18 #include "OpenTypeTables.h"
  19 #include "Lookups.h"
  20 #include "GlyphDefinitionTables.h"
  21 #include "GlyphPositionAdjustments.h"
  22
  23 U_NAMESPACE_BEGIN
  24
  25 struct GlyphSubstitutionTableHeader
  26 {
  27     fixed32 version;
  28     Offset  scriptListOffset;
  29     Offset  featureListOffset;
  30     Offset  lookupListOffset;
  31
  32     void    process(LEGlyphID *glyphs, const LETag **glyphTags, le_int32 glyphCount,
  33                  le_bool rightToLeft, LETag scriptTag, LETag languageTag,
  34                  const GlyphDefinitionTableHeader *glyphDefinitionTableHeader,
  35                  const LEGlyphFilter *filter = NULL, const LETag *featureOrder = NULL) const;
  36
  37     le_bool coversScript(LETag scriptTag) const;
  38     le_bool coversScriptAndLanguage(LETag scriptTag, LETag languageTag) const;
  39 };
  40
  41 enum GlyphSubstitutionSubtableTypes
  42 {
  43     gsstSingle          = 1,
  44     gsstMultiple        = 2,
  45     gsstAlternate       = 3,
  46     gsstLigature        = 4,
  47     gsstContext         = 5,
  48     gsstChainingContext = 6,
  49     gsstExtension       = 7,
  50     gsstReverseChaining = 8
  51 };
  52
  53 typedef LookupSubtable GlyphSubstitutionSubtable;
  54
  55 U_NAMESPACE_END
  56 #endif