| /* |
| * %W% %E% |
| * |
| * (C) Copyright IBM Corp. 1998, 1999, 2000, 2001 - All Rights Reserved |
| * |
| */ |
| |
| #ifndef __LOOKUPPROCESSOR_H |
| #define __LOOKUPPROCESSOR_H |
| |
| #include "LETypes.h" |
| #include "LEFontInstance.h" |
| #include "OpenTypeTables.h" |
| #include "Lookups.h" |
| #include "Features.h" |
| #include "GlyphDefinitionTables.h" |
| #include "GlyphPositionAdjustments.h" |
| #include "GlyphIterator.h" |
| |
| U_NAMESPACE_BEGIN |
| |
| class LookupProcessor : public UObject { |
| public: |
| static const LETag notSelected; |
| static const LETag defaultFeature; |
| |
| void process(LEGlyphID *glyphs, GlyphPositionAdjustment *glyphPositionAdjustments, const LETag **glyphTags, le_int32 glyphCount, |
| le_bool rightToLeft, const GlyphDefinitionTableHeader *glyphDefinitionTableHeader, const LEFontInstance *fontInstance) const; |
| |
| le_uint32 applyLookupTable(const LookupTable *lookupTable, GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const; |
| |
| le_uint32 applySingleLookup(le_uint16 lookupTableIndex, GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const; |
| |
| virtual le_uint32 applySubtable(const LookupSubtable *lookupSubtable, le_uint16 subtableType, |
| GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const = 0; |
| |
| virtual ~LookupProcessor(); |
| |
| /** |
| * ICU "poor man's RTTI", returns a UClassID for the actual class. |
| * |
| * @draft ICU 2.2 |
| */ |
| virtual inline UClassID getDynamicClassID() const { return getStaticClassID(); } |
| |
| /** |
| * ICU "poor man's RTTI", returns a UClassID for this class. |
| * |
| * @draft ICU 2.2 |
| */ |
| static inline UClassID getStaticClassID() { return (UClassID)&fgClassID; } |
| |
| protected: |
| LookupProcessor(const char *baseAddress, |
| Offset scriptListOffset, Offset featureListOffset, Offset lookupListOffset, |
| LETag scriptTag, LETag languageTag, const LETag *featureOrder); |
| |
| LookupProcessor(); |
| |
| le_int32 selectLookups(const FeatureTable *featureTable, LETag featureTag, le_int32 order); |
| |
| const LookupListTable *lookupListTable; |
| const FeatureListTable *featureListTable; |
| |
| LETag *lookupSelectArray; |
| LETag requiredFeatureTag; |
| |
| le_uint16 *lookupOrderArray; |
| le_uint32 lookupOrderCount; |
| |
| private: |
| |
| /** |
| * The address of this static class variable serves as this class's ID |
| * for ICU "poor man's RTTI". |
| */ |
| static const char fgClassID; |
| }; |
| |
| U_NAMESPACE_END |
| #endif |