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/*
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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 __GLYPHITERATOR_H
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#define __GLYPHITERATOR_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 "OpenTypeTables.h"
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#include "GlyphDefinitionTables.h"
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U_NAMESPACE_BEGIN
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class LEGlyphStorage;
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class GlyphPositionAdjustments;
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class GlyphIterator : public UMemory {
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public:
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GlyphIterator(LEGlyphStorage &theGlyphStorage, GlyphPositionAdjustments *theGlyphPositionAdjustments, le_bool rightToLeft, le_uint16 theLookupFlags, LETag theFeatureTag,
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const GlyphDefinitionTableHeader *theGlyphDefinitionTableHeader);
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GlyphIterator(GlyphIterator &that);
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GlyphIterator(GlyphIterator &that, LETag newFeatureTag);
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GlyphIterator(GlyphIterator &that, le_uint16 newLookupFlags);
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virtual ~GlyphIterator();
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void reset(le_uint16 newLookupFlags, LETag newFeatureTag);
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le_bool next(le_uint32 delta = 1);
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le_bool prev(le_uint32 delta = 1);
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le_bool findFeatureTag();
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le_bool isRightToLeft() const;
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le_bool ignoresMarks() const;
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le_bool baselineIsLogicalEnd() const;
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LEGlyphID getCurrGlyphID() const;
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le_int32 getCurrStreamPosition() const;
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le_int32 getMarkComponent(le_int32 markPosition) const;
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le_bool findMark2Glyph();
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void getCursiveEntryPoint(LEPoint &entryPoint) const;
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void getCursiveExitPoint(LEPoint &exitPoint) const;
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void setCurrGlyphID(TTGlyphID glyphID);
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void setCurrStreamPosition(le_int32 position);
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void setCurrGlyphBaseOffset(le_int32 baseOffset);
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void adjustCurrGlyphPositionAdjustment(float xPlacementAdjust, float yPlacementAdjust,
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float xAdvanceAdjust, float yAdvanceAdjust);
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void setCurrGlyphPositionAdjustment(float xPlacementAdjust, float yPlacementAdjust,
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float xAdvanceAdjust, float yAdvanceAdjust);
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void setCursiveEntryPoint(LEPoint &entryPoint);
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void setCursiveExitPoint(LEPoint &exitPoint);
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void setCursiveGlyph();
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LEGlyphID *insertGlyphs(le_int32 count, LEErrorCode& success);
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le_int32 applyInsertions();
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private:
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le_bool filterGlyph(le_uint32 index) const;
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le_bool hasFeatureTag() const;
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le_bool nextInternal(le_uint32 delta = 1);
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le_bool prevInternal(le_uint32 delta = 1);
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le_int32 direction;
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le_int32 position;
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le_int32 nextLimit;
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le_int32 prevLimit;
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LEGlyphStorage &glyphStorage;
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GlyphPositionAdjustments *glyphPositionAdjustments;
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le_int32 srcIndex;
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le_int32 destIndex;
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le_uint16 lookupFlags;
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LETag featureTag;
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const GlyphClassDefinitionTable *glyphClassDefinitionTable;
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const MarkAttachClassDefinitionTable *markAttachClassDefinitionTable;
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GlyphIterator &operator=(const GlyphIterator &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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