[apple/icu.git] / icuSources / layout / MorphTables.h

/*
 *
 * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved
 *
 */

#ifndef __MORPHTABLES_H
#define __MORPHTABLES_H

/**
 * \file
 * \internal
 */

#include "LETypes.h"
#include "LayoutTables.h"

U_NAMESPACE_BEGIN

class LEGlyphStorage;

typedef le_uint32 FeatureFlags;

typedef le_int16 FeatureType;
typedef le_int16 FeatureSetting;

struct FeatureTableEntry
{
    FeatureType     featureType;
    FeatureSetting  featureSetting;
    FeatureFlags    enableFlags;
    FeatureFlags    disableFlags;
};

struct ChainHeader
{
    FeatureFlags        defaultFlags;
    le_uint32           chainLength;
    le_int16           nFeatureEntries;
    le_int16           nSubtables;
    FeatureTableEntry   featureTable[ANY_NUMBER];
};

struct MorphTableHeader
{
    le_int32    version;
    le_uint32   nChains;
    ChainHeader chains[ANY_NUMBER];

    void process(LEGlyphStorage &glyphStorage) const;
};

typedef le_int16 SubtableCoverage;

enum SubtableCoverageFlags
{
    scfVertical = 0x8000,
    scfReverse  = 0x4000,
    scfIgnoreVt = 0x2000,
    scfReserved = 0x1FF8,
    scfTypeMask = 0x0007
};

enum MorphSubtableType
{
    mstIndicRearrangement               = 0,
    mstContextualGlyphSubstitution      = 1,
    mstLigatureSubstitution             = 2,
    mstReservedUnused                   = 3,
    mstNonContextualGlyphSubstitution   = 4,
    mstContextualGlyphInsertion         = 5
};

struct MorphSubtableHeader
{
    le_int16           length;
    SubtableCoverage    coverage;
    FeatureFlags        subtableFeatures;

    void process(LEGlyphStorage &glyphStorage) const;
};

U_NAMESPACE_END
#endif
Commit	Line	Data
b75a7d8f	1	/*
b75a7d8f	2	*
374ca955	3	* (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved
b75a7d8f A	4	*
	5	*/
	6
	7	#ifndef __MORPHTABLES_H
	8	#define __MORPHTABLES_H
	9
	10	/**
	11	* \file
	12	* \internal
	13	*/
	14
	15	#include "LETypes.h"
	16	#include "LayoutTables.h"
	17
	18	U_NAMESPACE_BEGIN
	19
374ca955 A	20	class LEGlyphStorage;
374ca955 A	21
b75a7d8f A	22	typedef le_uint32 FeatureFlags;
	23
	24	typedef le_int16 FeatureType;
	25	typedef le_int16 FeatureSetting;
	26
	27	struct FeatureTableEntry
	28	{
	29	FeatureType featureType;
	30	FeatureSetting featureSetting;
	31	FeatureFlags enableFlags;
	32	FeatureFlags disableFlags;
	33	};
	34
	35	struct ChainHeader
	36	{
	37	FeatureFlags defaultFlags;
	38	le_uint32 chainLength;
	39	le_int16 nFeatureEntries;
	40	le_int16 nSubtables;
	41	FeatureTableEntry featureTable[ANY_NUMBER];
	42	};
	43
	44	struct MorphTableHeader
	45	{
	46	le_int32 version;
	47	le_uint32 nChains;
	48	ChainHeader chains[ANY_NUMBER];
	49
374ca955	50	void process(LEGlyphStorage &glyphStorage) const;
b75a7d8f A	51	};
	52
	53	typedef le_int16 SubtableCoverage;
	54
	55	enum SubtableCoverageFlags
	56	{
	57	scfVertical = 0x8000,
	58	scfReverse = 0x4000,
	59	scfIgnoreVt = 0x2000,
	60	scfReserved = 0x1FF8,
	61	scfTypeMask = 0x0007
	62	};
	63
	64	enum MorphSubtableType
	65	{
	66	mstIndicRearrangement = 0,
	67	mstContextualGlyphSubstitution = 1,
	68	mstLigatureSubstitution = 2,
	69	mstReservedUnused = 3,
	70	mstNonContextualGlyphSubstitution = 4,
	71	mstContextualGlyphInsertion = 5
	72	};
	73
	74	struct MorphSubtableHeader
	75	{
	76	le_int16 length;
	77	SubtableCoverage coverage;
	78	FeatureFlags subtableFeatures;
	79
374ca955	80	void process(LEGlyphStorage &glyphStorage) const;
b75a7d8f A	81	};
	82
	83	U_NAMESPACE_END
	84	#endif
	85