| /* |
| * %W% %W% |
| * |
| * (C) Copyright IBM Corp. 1998 - 2004 - All Rights Reserved |
| * |
| */ |
| |
| |
| #include "LETypes.h" |
| #include "LayoutTables.h" |
| #include "MorphTables.h" |
| #include "SubtableProcessor.h" |
| #include "IndicRearrangementProcessor.h" |
| #include "ContextualGlyphSubstProc.h" |
| #include "LigatureSubstProc.h" |
| #include "NonContextualGlyphSubstProc.h" |
| //#include "ContextualGlyphInsertionProcessor.h" |
| #include "LEGlyphStorage.h" |
| #include "LESwaps.h" |
| |
| U_NAMESPACE_BEGIN |
| |
| void MorphTableHeader::process(LEGlyphStorage &glyphStorage) const |
| { |
| const ChainHeader *chainHeader = chains; |
| le_uint32 chainCount = SWAPL(this->nChains); |
| le_uint32 chain; |
| |
| for (chain = 0; chain < chainCount; chain += 1) { |
| FeatureFlags defaultFlags = SWAPL(chainHeader->defaultFlags); |
| le_uint32 chainLength = SWAPL(chainHeader->chainLength); |
| le_int16 nFeatureEntries = SWAPW(chainHeader->nFeatureEntries); |
| le_int16 nSubtables = SWAPW(chainHeader->nSubtables); |
| const MorphSubtableHeader *subtableHeader = |
| (const MorphSubtableHeader *)&chainHeader->featureTable[nFeatureEntries]; |
| le_int16 subtable; |
| |
| for (subtable = 0; subtable < nSubtables; subtable += 1) { |
| le_int16 length = SWAPW(subtableHeader->length); |
| SubtableCoverage coverage = SWAPW(subtableHeader->coverage); |
| FeatureFlags subtableFeatures = SWAPL(subtableHeader->subtableFeatures); |
| |
| // should check coverage more carefully... |
| if ((coverage & scfVertical) == 0 && (subtableFeatures & defaultFlags) != 0) { |
| subtableHeader->process(glyphStorage); |
| } |
| |
| subtableHeader = (const MorphSubtableHeader *) ((char *)subtableHeader + length); |
| } |
| |
| chainHeader = (const ChainHeader *)((char *)chainHeader + chainLength); |
| } |
| } |
| |
| void MorphSubtableHeader::process(LEGlyphStorage &glyphStorage) const |
| { |
| SubtableProcessor *processor = NULL; |
| |
| switch (SWAPW(coverage) & scfTypeMask) |
| { |
| case mstIndicRearrangement: |
| processor = new IndicRearrangementProcessor(this); |
| break; |
| |
| case mstContextualGlyphSubstitution: |
| processor = new ContextualGlyphSubstitutionProcessor(this); |
| break; |
| |
| case mstLigatureSubstitution: |
| processor = new LigatureSubstitutionProcessor(this); |
| break; |
| |
| case mstReservedUnused: |
| break; |
| |
| case mstNonContextualGlyphSubstitution: |
| processor = NonContextualGlyphSubstitutionProcessor::createInstance(this); |
| break; |
| |
| /* |
| case mstContextualGlyphInsertion: |
| processor = new ContextualGlyphInsertionProcessor(this); |
| break; |
| */ |
| |
| default: |
| break; |
| } |
| |
| if (processor != NULL) { |
| processor->process(glyphStorage); |
| delete processor; |
| } |
| } |
| |
| U_NAMESPACE_END |
