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/*
*
* (C) Copyright IBM Corp. 1998-2013 - All Rights Reserved
*
*/
#include "LETypes.h"
#include "LEGlyphFilter.h"
#include "LEFontInstance.h"
#include "OpenTypeTables.h"
#include "ICUFeatures.h"
#include "Lookups.h"
#include "ScriptAndLanguage.h"
#include "GlyphDefinitionTables.h"
#include "GlyphSubstitutionTables.h"
#include "SingleSubstitutionSubtables.h"
#include "MultipleSubstSubtables.h"
#include "AlternateSubstSubtables.h"
#include "LigatureSubstSubtables.h"
#include "ContextualSubstSubtables.h"
#include "ExtensionSubtables.h"
#include "LookupProcessor.h"
#include "GlyphSubstLookupProc.h"
#include "LESwaps.h"
U_NAMESPACE_BEGIN
GlyphSubstitutionLookupProcessor::GlyphSubstitutionLookupProcessor(
const LEReferenceTo<GlyphSubstitutionTableHeader> &glyphSubstitutionTableHeader,
LETag scriptTag,
LETag languageTag,
const LEGlyphFilter *filter,
const FeatureMap *featureMap,
le_int32 featureMapCount,
le_bool featureOrder,
LEErrorCode& success)
: LookupProcessor(
glyphSubstitutionTableHeader,
SWAPW(glyphSubstitutionTableHeader->scriptListOffset),
SWAPW(glyphSubstitutionTableHeader->featureListOffset),
SWAPW(glyphSubstitutionTableHeader->lookupListOffset),
scriptTag, languageTag, featureMap, featureMapCount, featureOrder, success), fFilter(filter)
{
// anything?
}
GlyphSubstitutionLookupProcessor::GlyphSubstitutionLookupProcessor()
{
}
le_uint32 GlyphSubstitutionLookupProcessor::applySubtable(const LEReferenceTo<LookupSubtable> &lookupSubtable, le_uint16 lookupType,
GlyphIterator *glyphIterator, const LEFontInstance *fontInstance, LEErrorCode& success) const
{
if (LE_FAILURE(success)) {
return 0;
}
le_uint32 delta = 0;
switch(lookupType)
{
case 0:
break;
case gsstSingle:
{
const LEReferenceTo<SingleSubstitutionSubtable> subtable(lookupSubtable, success);
delta = subtable->process(subtable, glyphIterator, success, fFilter);
break;
}
case gsstMultiple:
{
const LEReferenceTo<MultipleSubstitutionSubtable> subtable(lookupSubtable, success);
delta = subtable->process(subtable, glyphIterator, success, fFilter);
break;
}
case gsstAlternate:
{
const LEReferenceTo<AlternateSubstitutionSubtable> subtable(lookupSubtable, success);
delta = subtable->process(subtable, glyphIterator, success, fFilter);
break;
}
case gsstLigature:
{
const LEReferenceTo<LigatureSubstitutionSubtable> subtable(lookupSubtable, success);
delta = subtable->process(subtable, glyphIterator, success, fFilter);
break;
}
case gsstContext:
{
const LEReferenceTo<ContextualSubstitutionSubtable> subtable(lookupSubtable, success);
delta = subtable->process(this, glyphIterator, fontInstance, success);
break;
}
case gsstChainingContext:
{
const LEReferenceTo<ChainingContextualSubstitutionSubtable> subtable(lookupSubtable, success);
delta = subtable->process(this, glyphIterator, fontInstance, success);
break;
}
case gsstExtension:
{
const LEReferenceTo<ExtensionSubtable> subtable(lookupSubtable, success);
delta = subtable->process(this, lookupType, glyphIterator, fontInstance, success);
break;
}
default:
break;
}
return delta;
}
GlyphSubstitutionLookupProcessor::~GlyphSubstitutionLookupProcessor()
{
}
U_NAMESPACE_END
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