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