| /* |
| * @(#)GlyphPositioningLookupProcessor.cpp 1.6 00/03/15 |
| * |
| * (C) Copyright IBM Corp. 1998, 1999, 2000 - All Rights Reserved |
| * |
| */ |
| |
| #include "LETypes.h" |
| #include "LEFontInstance.h" |
| #include "OpenTypeTables.h" |
| #include "Features.h" |
| #include "Lookups.h" |
| #include "ScriptAndLanguage.h" |
| #include "GlyphDefinitionTables.h" |
| #include "GlyphPositioningTables.h" |
| #include "SinglePositioningSubtables.h" |
| #include "PairPositioningSubtables.h" |
| //#include "CursivePositioningSubtables.h" |
| #include "MarkToBasePositioningSubtables.h" |
| #include "MarkToLigaturePositioningSubtables.h" |
| #include "MarkToMarkPositioningSubtables.h" |
| //#include "ContextualPositioningSubtables.h" |
| #include "ContextualSubstitutionSubtables.h" |
| #include "LookupProcessor.h" |
| #include "GlyphPositioningLookupProcessor.h" |
| #include "LESwaps.h" |
| |
| // Aside from the names, the contextual positioning subtables are |
| // the same as the contextual substitution subtables. |
| typedef ContextualSubstitutionSubtable ContextualPositioningSubtable; |
| typedef ChainingContextualSubstitutionSubtable ChainingContextualPositioningSubtable; |
| |
| GlyphPositioningLookupProcessor::GlyphPositioningLookupProcessor( |
| GlyphPositioningTableHeader *glyphPositioningTableHeader, |
| LETag scriptTag, LETag languageTag) |
| : LookupProcessor( |
| (char *) glyphPositioningTableHeader, |
| SWAPW(glyphPositioningTableHeader->scriptListOffset), |
| SWAPW(glyphPositioningTableHeader->featureListOffset), |
| SWAPW(glyphPositioningTableHeader->lookupListOffset), |
| scriptTag, languageTag) |
| { |
| // anything? |
| } |
| |
| GlyphPositioningLookupProcessor::GlyphPositioningLookupProcessor() |
| { |
| } |
| |
| le_uint32 GlyphPositioningLookupProcessor::applySubtable(LookupSubtable *lookupSubtable, le_uint16 lookupType, |
| GlyphIterator *glyphIterator, |
| LEFontInstance *fontInstance) |
| { |
| le_uint32 delta = 0; |
| |
| switch(lookupType) |
| { |
| case 0: |
| break; |
| |
| case gpstSingle: |
| { |
| SinglePositioningSubtable *subtable = (SinglePositioningSubtable *) lookupSubtable; |
| |
| delta = subtable->process(glyphIterator, fontInstance); |
| break; |
| } |
| |
| case gpstPair: |
| { |
| PairPositioningSubtable *subtable = (PairPositioningSubtable *) lookupSubtable; |
| |
| delta = subtable->process(glyphIterator, fontInstance); |
| break; |
| } |
| |
| #if 0 |
| case gpstCursive: |
| { |
| CursivePositioningSubtable *subtable = (CursivePositioningSubtable *) lookupSubtable; |
| |
| delta = subtable->process(glyphIterator, fontInstance); |
| break; |
| } |
| #endif |
| |
| case gpstMarkToBase: |
| { |
| MarkToBasePositioningSubtable *subtable = (MarkToBasePositioningSubtable *) lookupSubtable; |
| |
| delta = subtable->process(glyphIterator, fontInstance); |
| break; |
| } |
| |
| case gpstMarkToLigature: |
| { |
| MarkToLigaturePositioningSubtable *subtable = (MarkToLigaturePositioningSubtable *) lookupSubtable; |
| |
| delta = subtable->process(glyphIterator, fontInstance); |
| break; |
| } |
| |
| case gpstMarkToMark: |
| { |
| MarkToMarkPositioningSubtable *subtable = (MarkToMarkPositioningSubtable *) lookupSubtable; |
| |
| delta = subtable->process(glyphIterator, fontInstance); |
| break; |
| } |
| |
| case gpstContext: |
| { |
| ContextualPositioningSubtable *subtable = (ContextualPositioningSubtable *) lookupSubtable; |
| |
| delta = subtable->process(this, glyphIterator, fontInstance); |
| break; |
| } |
| |
| case gpstChainedContext: |
| { |
| ChainingContextualPositioningSubtable *subtable = (ChainingContextualPositioningSubtable *) lookupSubtable; |
| |
| delta = subtable->process(this, glyphIterator, fontInstance); |
| break; |
| } |
| |
| default: |
| break; |
| } |
| |
| return delta; |
| } |
| |
| GlyphPositioningLookupProcessor::~GlyphPositioningLookupProcessor() |
| { |
| } |
| |