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/*
* %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:
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();
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;
};
U_NAMESPACE_END
#endif
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