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