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GlyphSubstitutionTables.h

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00001 /*
00002  * @(#)GlyphSubstitutionTables.h        1.9 00/03/15
00003  *
00004  * (C) Copyright IBM Corp. 1998, 1999, 2000 - All Rights Reserved
00005  *
00006  */
00007 
00008 #ifndef __GLYPHSUBSTITUTIONTABLES_H
00009 #define __GLYPHSUBSTITUTIONTABLES_H
00010 
00011 #include "LETypes.h"
00012 #include "LEGlyphFilter.h"
00013 #include "OpenTypeTables.h"
00014 #include "Lookups.h"
00015 #include "GlyphDefinitionTables.h"
00016 #include "GlyphPositionAdjustments.h"
00017 
00018 struct GlyphSubstitutionTableHeader
00019 {
00020     fixed32 version;
00021     Offset  scriptListOffset;
00022     Offset  featureListOffset;
00023     Offset  lookupListOffset;
00024 
00025     void    process(LEGlyphID *glyphs, const LETag **glyphTags, le_int32 glyphCount,
00026                  le_bool rightToLeft, LETag scriptTag, LETag languageTag,
00027                  GlyphDefinitionTableHeader *glyphDefinitionTableHeader,
00028                  LEGlyphFilter *filter = NULL);
00029 
00030     le_bool coversScript(LETag scriptTag);
00031 };
00032 
00033 enum GlyphSubstitutionSubtableTypes
00034 {
00035     gsstSingle          = 1,
00036     gsstMultiple        = 2,
00037     gsstAlternate       = 3,
00038     gsstLigature        = 4,
00039     gsstContext         = 5,
00040     gsstChainingContext = 6
00041 };
00042 
00043 typedef LookupSubtable GlyphSubstitutionSubtable;
00044 
00045 #endif

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