| /* |
| * (C) Copyright IBM Corp. 1998 - 2013 - All Rights Reserved |
| * |
| */ |
| |
| #include "LETypes.h" |
| #include "LEFontInstance.h" |
| #include "OpenTypeTables.h" |
| #include "ICUFeatures.h" |
| #include "Lookups.h" |
| #include "ScriptAndLanguage.h" |
| #include "GlyphDefinitionTables.h" |
| #include "GlyphPositioningTables.h" |
| #include "SinglePositioningSubtables.h" |
| #include "PairPositioningSubtables.h" |
| #include "CursiveAttachmentSubtables.h" |
| #include "MarkToBasePosnSubtables.h" |
| #include "MarkToLigaturePosnSubtables.h" |
| #include "MarkToMarkPosnSubtables.h" |
| //#include "ContextualPositioningSubtables.h" |
| #include "ContextualSubstSubtables.h" |
| #include "ExtensionSubtables.h" |
| #include "LookupProcessor.h" |
| #include "GlyphPosnLookupProc.h" |
| #include "LESwaps.h" |
| |
| U_NAMESPACE_BEGIN |
| |
| // Aside from the names, the contextual positioning subtables are |
| // the same as the contextual substitution subtables. |
| typedef ContextualSubstitutionSubtable ContextualPositioningSubtable; |
| typedef ChainingContextualSubstitutionSubtable ChainingContextualPositioningSubtable; |
| |
| GlyphPositioningLookupProcessor::GlyphPositioningLookupProcessor( |
| const LEReferenceTo<GlyphPositioningTableHeader> &glyphPositioningTableHeader, |
| LETag scriptTag, |
| LETag languageTag, |
| const FeatureMap *featureMap, |
| le_int32 featureMapCount, |
| le_bool featureOrder, |
| LEErrorCode& success) |
| : LookupProcessor( |
| glyphPositioningTableHeader, |
| SWAPW(glyphPositioningTableHeader->scriptListOffset), |
| SWAPW(glyphPositioningTableHeader->featureListOffset), |
| SWAPW(glyphPositioningTableHeader->lookupListOffset), |
| scriptTag, |
| languageTag, |
| featureMap, |
| featureMapCount, |
| featureOrder, |
| success |
| ) |
| { |
| // anything? |
| } |
| |
| GlyphPositioningLookupProcessor::GlyphPositioningLookupProcessor() |
| { |
| } |
| |
| le_uint32 GlyphPositioningLookupProcessor::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 gpstSingle: |
| { |
| LEReferenceTo<SinglePositioningSubtable> subtable(lookupSubtable, success); |
| |
| delta = subtable->process(subtable, glyphIterator, fontInstance, success); |
| break; |
| } |
| |
| case gpstPair: |
| { |
| LEReferenceTo<PairPositioningSubtable> subtable(lookupSubtable, success); |
| |
| delta = subtable->process(subtable, glyphIterator, fontInstance, success); |
| break; |
| } |
| |
| case gpstCursive: |
| { |
| LEReferenceTo<CursiveAttachmentSubtable> subtable(lookupSubtable, success); |
| |
| delta = subtable->process(subtable, glyphIterator, fontInstance, success); |
| break; |
| } |
| |
| case gpstMarkToBase: |
| { |
| LEReferenceTo<MarkToBasePositioningSubtable> subtable(lookupSubtable, success); |
| |
| delta = subtable->process(subtable, glyphIterator, fontInstance, success); |
| break; |
| } |
| |
| case gpstMarkToLigature: |
| { |
| LEReferenceTo<MarkToLigaturePositioningSubtable> subtable(lookupSubtable, success); |
| |
| delta = subtable->process(subtable, glyphIterator, fontInstance, success); |
| break; |
| } |
| |
| case gpstMarkToMark: |
| { |
| LEReferenceTo<MarkToMarkPositioningSubtable> subtable(lookupSubtable, success); |
| |
| delta = subtable->process(subtable, glyphIterator, fontInstance, success); |
| break; |
| } |
| |
| case gpstContext: |
| { |
| LEReferenceTo<ContextualPositioningSubtable> subtable(lookupSubtable, success); |
| |
| delta = subtable->process(this, glyphIterator, fontInstance, success); |
| break; |
| } |
| |
| case gpstChainedContext: |
| { |
| LEReferenceTo<ChainingContextualPositioningSubtable> subtable(lookupSubtable, success); |
| |
| delta = subtable->process(this, glyphIterator, fontInstance, success); |
| break; |
| } |
| |
| case gpstExtension: |
| { |
| LEReferenceTo<ExtensionSubtable> subtable(lookupSubtable, success); |
| |
| delta = subtable->process(this, lookupType, glyphIterator, fontInstance, success); |
| break; |
| } |
| |
| default: |
| break; |
| } |
| |
| return delta; |
| } |
| |
| GlyphPositioningLookupProcessor::~GlyphPositioningLookupProcessor() |
| { |
| } |
| |
| U_NAMESPACE_END |