sl@0: /*
sl@0:  * %W% %E%
sl@0:  *
sl@0:  * (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved
sl@0:  *
sl@0:  */
sl@0: 
sl@0: #ifndef __LOOKUPPROCESSOR_H
sl@0: #define __LOOKUPPROCESSOR_H
sl@0: 
sl@0: /**
sl@0:  * \file
sl@0:  * \internal
sl@0:  */
sl@0: 
sl@0: #include "LETypes.h"
sl@0: #include "LEFontInstance.h"
sl@0: #include "OpenTypeTables.h"
sl@0: //#include "Lookups.h"
sl@0: //#include "Features.h"
sl@0: 
sl@0: U_NAMESPACE_BEGIN
sl@0: 
sl@0: class  LEFontInstance;
sl@0: class  LEGlyphStorage;
sl@0: class  GlyphIterator;
sl@0: class  GlyphPositionAdjustments;
sl@0: struct FeatureTable;
sl@0: struct FeatureListTable;
sl@0: struct GlyphDefinitionTableHeader;
sl@0: struct LookupSubtable;
sl@0: struct LookupTable;
sl@0: 
sl@0: class LookupProcessor : public UMemory {
sl@0: public:
sl@0:     static const LETag notSelected;
sl@0:     static const LETag defaultFeature;
sl@0: 
sl@0:     le_bool isBogus();
sl@0: 
sl@0:     le_int32 process(LEGlyphStorage &glyphStorage,
sl@0:         GlyphPositionAdjustments *glyphPositionAdjustments, le_bool rightToLeft,
sl@0:         const GlyphDefinitionTableHeader *glyphDefinitionTableHeader,
sl@0:         const LEFontInstance *fontInstance, LEErrorCode& success) const;
sl@0: 
sl@0:     le_uint32 applyLookupTable(const LookupTable *lookupTable, GlyphIterator *glyphIterator,
sl@0:         const LEFontInstance *fontInstance, LEErrorCode& success) const;
sl@0: 
sl@0:     le_uint32 applySingleLookup(le_uint16 lookupTableIndex, GlyphIterator *glyphIterator,
sl@0:         const LEFontInstance *fontInstance, LEErrorCode& success) const;
sl@0: 
sl@0:     virtual le_uint32 applySubtable(const LookupSubtable *lookupSubtable, le_uint16 subtableType,
sl@0:         GlyphIterator *glyphIterator, const LEFontInstance *fontInstance,
sl@0:         LEErrorCode& success) const = 0;
sl@0: 
sl@0:     virtual ~LookupProcessor();
sl@0: 
sl@0: protected:
sl@0:     LookupProcessor(const char *baseAddress,
sl@0:         Offset scriptListOffset, Offset featureListOffset, Offset lookupListOffset,
sl@0:         LETag scriptTag, LETag languageTag, const LETag *featureOrder);
sl@0: 
sl@0:     LookupProcessor();
sl@0: 
sl@0:     le_int32 selectLookups(const FeatureTable *featureTable, LETag featureTag, le_int32 order);
sl@0: 
sl@0:     const LookupListTable   *lookupListTable;
sl@0:     const FeatureListTable  *featureListTable;
sl@0: 
sl@0:     LETag                   *lookupSelectArray;
sl@0:     LETag                   requiredFeatureTag;
sl@0: 
sl@0:     le_uint16               *lookupOrderArray;
sl@0:     le_uint32               lookupOrderCount;
sl@0: 
sl@0: private:
sl@0: 
sl@0:     LookupProcessor(const LookupProcessor &other); // forbid copying of this class
sl@0:     LookupProcessor &operator=(const LookupProcessor &other); // forbid copying of this class
sl@0: };
sl@0: 
sl@0: U_NAMESPACE_END
sl@0: #endif