| /* |
| * @(#)GlyphSubstitutionLookupProcessor.cpp 1.6 00/03/15 |
| * |
| * (C) Copyright IBM Corp. 1998, 1999, 2000 - All Rights Reserved |
| * |
| */ |
| |
| #include "LETypes.h" |
| #include "LEGlyphFilter.h" |
| #include "LEFontInstance.h" |
| #include "OpenTypeTables.h" |
| #include "Features.h" |
| #include "Lookups.h" |
| #include "ScriptAndLanguage.h" |
| #include "GlyphDefinitionTables.h" |
| #include "GlyphSubstitutionTables.h" |
| #include "SingleSubstitutionSubtables.h" |
| #include "MultipleSubstitutionSubtables.h" |
| #include "AlternateSubstitutionSubtables.h" |
| #include "LigatureSubstitutionSubtables.h" |
| #include "ContextualSubstitutionSubtables.h" |
| #include "LookupProcessor.h" |
| #include "GlyphSubstitutionLookupProcessor.h" |
| #include "LESwaps.h" |
| |
| GlyphSubstitutionLookupProcessor::GlyphSubstitutionLookupProcessor( |
| GlyphSubstitutionTableHeader *glyphSubstitutionTableHeader, |
| LETag scriptTag, LETag languageTag, LEGlyphFilter *filter) |
| : LookupProcessor( |
| (char *) glyphSubstitutionTableHeader, |
| SWAPW(glyphSubstitutionTableHeader->scriptListOffset), |
| SWAPW(glyphSubstitutionTableHeader->featureListOffset), |
| SWAPW(glyphSubstitutionTableHeader->lookupListOffset), |
| scriptTag, languageTag), fFilter(filter) |
| { |
| // anything? |
| } |
| |
| GlyphSubstitutionLookupProcessor::GlyphSubstitutionLookupProcessor() |
| { |
| } |
| |
| le_uint32 GlyphSubstitutionLookupProcessor::applySubtable(LookupSubtable *lookupSubtable, le_uint16 lookupType, |
| GlyphIterator *glyphIterator, LEFontInstance *fontInstance) |
| { |
| le_uint32 delta = 0; |
| |
| switch(lookupType) |
| { |
| case 0: |
| break; |
| |
| case gsstSingle: |
| { |
| SingleSubstitutionSubtable *subtable = (SingleSubstitutionSubtable *) lookupSubtable; |
| |
| delta = subtable->process(glyphIterator, fFilter); |
| break; |
| } |
| |
| case gsstMultiple: |
| { |
| MultipleSubstitutionSubtable *subtable = (MultipleSubstitutionSubtable *) lookupSubtable; |
| |
| delta = subtable->process(glyphIterator, fFilter); |
| break; |
| } |
| |
| case gsstAlternate: |
| { |
| AlternateSubstitutionSubtable *subtable = (AlternateSubstitutionSubtable *) lookupSubtable; |
| |
| delta = subtable->process(glyphIterator, fFilter); |
| break; |
| } |
| |
| case gsstLigature: |
| { |
| LigatureSubstitutionSubtable *subtable = (LigatureSubstitutionSubtable *) lookupSubtable; |
| |
| delta = subtable->process(glyphIterator, fFilter); |
| break; |
| } |
| |
| case gsstContext: |
| { |
| ContextualSubstitutionSubtable *subtable = (ContextualSubstitutionSubtable *) lookupSubtable; |
| |
| delta = subtable->process(this, glyphIterator, fontInstance); |
| break; |
| } |
| |
| case gsstChainingContext: |
| { |
| ChainingContextualSubstitutionSubtable *subtable = (ChainingContextualSubstitutionSubtable *) lookupSubtable; |
| |
| delta = subtable->process(this, glyphIterator, fontInstance); |
| break; |
| } |
| |
| default: |
| break; |
| } |
| |
| return delta; |
| } |
| |
| GlyphSubstitutionLookupProcessor::~GlyphSubstitutionLookupProcessor() |
| { |
| } |
| |