55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
/*
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* %W% %E%
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*
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* (C) Copyright IBM Corp. 1998, 1999, 2000, 2001 - 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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#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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#include "GlyphDefinitionTables.h"
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#include "GlyphPositionAdjustments.h"
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#include "GlyphIterator.h"
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class LookupProcessor
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{
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public:
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static LETag notSelected;
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static LETag defaultFeature;
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void process(LEGlyphID *glyphs, GlyphPositionAdjustment *glyphPositionAdjustments, const LETag **glyphTags, le_int32 glyphCount,
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le_bool rightToLeft, const GlyphDefinitionTableHeader *glyphDefinitionTableHeader, const LEFontInstance *fontInstance) const;
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le_uint32 applyLookupTable(const LookupTable *lookupTable, GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const;
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le_uint32 applySingleLookup(le_uint16 lookupTableIndex, GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const;
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virtual le_uint32 applySubtable(const LookupSubtable *lookupSubtable, le_uint16 subtableType,
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GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) 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);
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LookupProcessor();
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LETag selectFeature(le_uint16 featureIndex, LETag tagOverride = notSelected) const;
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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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};
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#endif
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