52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
/*
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*
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* (C) Copyright IBM Corp. 1998-2008 - All Rights Reserved
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*
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*/
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#include "LETypes.h"
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#include "LEFontInstance.h"
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#include "OpenTypeTables.h"
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#include "GlyphSubstitutionTables.h"
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#include "GlyphIterator.h"
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#include "LookupProcessor.h"
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#include "SubstitutionLookups.h"
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#include "CoverageTables.h"
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#include "LESwaps.h"
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U_NAMESPACE_BEGIN
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/*
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NOTE: This could be optimized somewhat by keeping track
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of the previous sequenceIndex in the loop and doing next()
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or prev() of the delta between that and the current
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sequenceIndex instead of always resetting to the front.
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*/
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void SubstitutionLookup::applySubstitutionLookups(
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LookupProcessor *lookupProcessor,
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SubstitutionLookupRecord *substLookupRecordArray,
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le_uint16 substCount,
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GlyphIterator *glyphIterator,
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const LEFontInstance *fontInstance,
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le_int32 position,
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LEErrorCode& success)
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{
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if (LE_FAILURE(success)) {
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return;
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}
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GlyphIterator tempIterator(*glyphIterator);
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for (le_uint16 subst = 0; subst < substCount && LE_SUCCESS(success); subst += 1) {
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le_uint16 sequenceIndex = SWAPW(substLookupRecordArray[subst].sequenceIndex);
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le_uint16 lookupListIndex = SWAPW(substLookupRecordArray[subst].lookupListIndex);
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tempIterator.setCurrStreamPosition(position);
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tempIterator.next(sequenceIndex);
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lookupProcessor->applySingleLookup(lookupListIndex, &tempIterator, fontInstance, success);
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}
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}
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U_NAMESPACE_END
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