99 lines
3.1 KiB
C++
99 lines
3.1 KiB
C++
/*
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* %W% %W%
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*
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* (C) Copyright IBM Corp. 1998 - 2013 - All Rights Reserved
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*
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*/
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#include "LETypes.h"
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#include "LayoutTables.h"
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#include "MorphTables.h"
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#include "SubtableProcessor.h"
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#include "IndicRearrangementProcessor.h"
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#include "ContextualGlyphSubstProc.h"
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#include "LigatureSubstProc.h"
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#include "NonContextualGlyphSubstProc.h"
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//#include "ContextualGlyphInsertionProcessor.h"
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#include "LEGlyphStorage.h"
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#include "LESwaps.h"
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U_NAMESPACE_BEGIN
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void MorphTableHeader::process(const LETableReference &base, LEGlyphStorage &glyphStorage, LEErrorCode &success) const
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{
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le_uint32 chainCount = SWAPL(this->nChains);
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LEReferenceTo<ChainHeader> chainHeader(base, success, chains); // moving header
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LEReferenceToArrayOf<ChainHeader> chainHeaderArray(base, success, chains, chainCount);
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le_uint32 chain;
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for (chain = 0; LE_SUCCESS(success) && (chain < chainCount); chain += 1) {
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FeatureFlags defaultFlags = SWAPL(chainHeader->defaultFlags);
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le_uint32 chainLength = SWAPL(chainHeader->chainLength);
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le_int16 nFeatureEntries = SWAPW(chainHeader->nFeatureEntries);
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le_int16 nSubtables = SWAPW(chainHeader->nSubtables);
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LEReferenceTo<MorphSubtableHeader> subtableHeader =
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LEReferenceTo<MorphSubtableHeader>(chainHeader,success, &(chainHeader->featureTable[nFeatureEntries]));
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le_int16 subtable;
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for (subtable = 0; LE_SUCCESS(success) && (subtable < nSubtables); subtable += 1) {
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le_int16 length = SWAPW(subtableHeader->length);
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SubtableCoverage coverage = SWAPW(subtableHeader->coverage);
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FeatureFlags subtableFeatures = SWAPL(subtableHeader->subtableFeatures);
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// should check coverage more carefully...
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if ((coverage & scfVertical) == 0 && (subtableFeatures & defaultFlags) != 0 && LE_SUCCESS(success)) {
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subtableHeader->process(subtableHeader, glyphStorage, success);
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}
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subtableHeader.addOffset(length, success);
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}
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chainHeader.addOffset(chainLength, success);
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}
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}
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void MorphSubtableHeader::process(const LEReferenceTo<MorphSubtableHeader> &base, LEGlyphStorage &glyphStorage, LEErrorCode &success) const
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{
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SubtableProcessor *processor = NULL;
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switch (SWAPW(coverage) & scfTypeMask)
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{
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case mstIndicRearrangement:
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processor = new IndicRearrangementProcessor(base, success);
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break;
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case mstContextualGlyphSubstitution:
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processor = new ContextualGlyphSubstitutionProcessor(base, success);
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break;
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case mstLigatureSubstitution:
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processor = new LigatureSubstitutionProcessor(base, success);
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break;
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case mstReservedUnused:
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break;
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case mstNonContextualGlyphSubstitution:
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processor = NonContextualGlyphSubstitutionProcessor::createInstance(base, success);
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break;
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/*
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case mstContextualGlyphInsertion:
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processor = new ContextualGlyphInsertionProcessor(this);
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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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if (processor != NULL) {
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if(LE_SUCCESS(success)) {
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processor->process(glyphStorage, success);
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}
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delete processor;
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}
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}
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U_NAMESPACE_END
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