68 lines
2.1 KiB
C++
68 lines
2.1 KiB
C++
/*
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* @(#)GlyphIterator.h 1.9 00/03/15
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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 __GLYPHITERATOR_H
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#define __GLYPHITERATOR_H
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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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#include "GlyphPositionAdjustments.h"
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class GlyphIterator
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{
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public:
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GlyphIterator(LEGlyphID *theGlyphs, GlyphPositionAdjustment *theGlyphPositionAdjustments, le_int32 theGlyphCount,
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le_bool rightToLeft, le_uint16 theLookupFlags, LETag theFeatureTag, const LETag *theGlyphTags[],
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const GlyphDefinitionTableHeader *theGlyphDefinitionTableHeader);
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GlyphIterator(GlyphIterator &that);
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GlyphIterator(GlyphIterator &that, le_uint16 newLookupFlags);
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~GlyphIterator();
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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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LEGlyphID getCurrGlyphID() const;
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le_int32 getCurrStreamPosition() const;
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void getCurrGlyphPositionAdjustment(GlyphPositionAdjustment& adjustment) const;
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le_int32 getMarkComponent(le_int32 markPosition) const;
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void setCurrGlyphID(LEGlyphID glyphID);
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void setCurrStreamPosition(le_int32 position);
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void setCurrGlyphPositionAdjustment(const GlyphPositionAdjustment *adjustment);
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void adjustCurrGlyphPositionAdjustment(float xPlacmentAdjust, float yPlacementAdjust,
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float xAdvanceAdjust, float yAdvanceAdjust);
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private:
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GlyphIterator();
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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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LEGlyphID *glyphs;
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GlyphPositionAdjustment *glyphPositionAdjustments;
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le_uint16 lookupFlags;
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LETag featureTag;
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const LETag **glyphTags;
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const GlyphClassDefinitionTable *glyphClassDefinitionTable;
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const MarkAttachClassDefinitionTable *markAttachClassDefinitionTable;
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};
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#endif
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