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Commit	Line	Data
	1	/*
	2	*
	3	* (C) Copyright IBM Corp. 1998-2008 - All Rights Reserved
	4	*
	5	*/
	6
	7	#ifndef __GLYPHITERATOR_H
	8	#define __GLYPHITERATOR_H
	9
	10	/**
	11	* \file
	12	* \internal
	13	*/
	14
	15	#include "LETypes.h"
	16	#include "OpenTypeTables.h"
	17	#include "GlyphDefinitionTables.h"
	18
	19	U_NAMESPACE_BEGIN
	20
	21	class LEGlyphStorage;
	22	class GlyphPositionAdjustments;
	23
	24	class GlyphIterator : public UMemory {
	25	public:
	26	GlyphIterator(LEGlyphStorage &theGlyphStorage, GlyphPositionAdjustments *theGlyphPositionAdjustments, le_bool rightToLeft, le_uint16 theLookupFlags,
	27	FeatureMask theFeatureMask, const GlyphDefinitionTableHeader *theGlyphDefinitionTableHeader);
	28
	29	GlyphIterator(GlyphIterator &that);
	30
	31	GlyphIterator(GlyphIterator &that, FeatureMask newFeatureMask);
	32
	33	GlyphIterator(GlyphIterator &that, le_uint16 newLookupFlags);
	34
	35	virtual ~GlyphIterator();
	36
	37	void reset(le_uint16 newLookupFlags, LETag newFeatureTag);
	38
	39	le_bool next(le_uint32 delta = 1);
	40	le_bool prev(le_uint32 delta = 1);
	41	le_bool findFeatureTag();
	42
	43	le_bool isRightToLeft() const;
	44	le_bool ignoresMarks() const;
	45
	46	le_bool baselineIsLogicalEnd() const;
	47
	48	LEGlyphID getCurrGlyphID() const;
	49	le_int32 getCurrStreamPosition() const;
	50
	51	le_int32 getMarkComponent(le_int32 markPosition) const;
	52	le_bool findMark2Glyph();
	53
	54	void getCursiveEntryPoint(LEPoint &entryPoint) const;
	55	void getCursiveExitPoint(LEPoint &exitPoint) const;
	56
	57	void setCurrGlyphID(TTGlyphID glyphID);
	58	void setCurrStreamPosition(le_int32 position);
	59	void setCurrGlyphBaseOffset(le_int32 baseOffset);
	60	void adjustCurrGlyphPositionAdjustment(float xPlacementAdjust, float yPlacementAdjust,
	61	float xAdvanceAdjust, float yAdvanceAdjust);
	62
	63	void setCurrGlyphPositionAdjustment(float xPlacementAdjust, float yPlacementAdjust,
	64	float xAdvanceAdjust, float yAdvanceAdjust);
	65
	66	void clearCursiveEntryPoint();
	67	void clearCursiveExitPoint();
	68	void setCursiveEntryPoint(LEPoint &entryPoint);
	69	void setCursiveExitPoint(LEPoint &exitPoint);
	70	void setCursiveGlyph();
	71
	72	LEGlyphID *insertGlyphs(le_int32 count, LEErrorCode& success);
	73	le_int32 applyInsertions();
	74
	75	private:
	76	le_bool filterGlyph(le_uint32 index) const;
	77	le_bool hasFeatureTag(le_bool matchGroup) const;
	78	le_bool nextInternal(le_uint32 delta = 1);
	79	le_bool prevInternal(le_uint32 delta = 1);
	80
	81	le_int32 direction;
	82	le_int32 position;
	83	le_int32 nextLimit;
	84	le_int32 prevLimit;
	85
	86	LEGlyphStorage &glyphStorage;
	87	GlyphPositionAdjustments *glyphPositionAdjustments;
	88
	89	le_int32 srcIndex;
	90	le_int32 destIndex;
	91	le_uint16 lookupFlags;
	92	FeatureMask featureMask;
	93	le_int32 glyphGroup;
	94
	95	const GlyphClassDefinitionTable *glyphClassDefinitionTable;
	96	const MarkAttachClassDefinitionTable *markAttachClassDefinitionTable;
	97
	98	GlyphIterator &operator=(const GlyphIterator &other); // forbid copying of this class
	99	};
	100
	101	U_NAMESPACE_END
	102	#endif