/*
* Copyright (C) 1998-2004 David Turner and Werner Lemberg
* Copyright (C) 2006 Behdad Esfahbod
*
* This is part of HarfBuzz, an OpenType Layout engine library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
#ifndef HARFBUZZ_OPEN_H
#define HARFBUZZ_OPEN_H
#include "harfbuzz-global.h"
HB_BEGIN_HEADER
#ifdef HB_USE_PACKED_STRUCTS
#pragma pack(push, 1)
#endif
/* Use this if a feature applies to all glyphs */
#define HB_ALL_GLYPHS 0xFFFF
#define HB_DEFAULT_LANGUAGE 0xFFFF
#define HB_MAX_NESTING_LEVEL 100
/* Script list related structures */
struct HB_LangSys_
{
HB_UShort* FeatureIndex; /* array of Feature indices */
HB_UShort LookupOrderOffset; /* always 0 for TT Open 1.0 */
HB_UShort ReqFeatureIndex; /* required FeatureIndex */
HB_UShort FeatureCount; /* number of Feature indices */
};
typedef struct HB_LangSys_ HB_LangSys;
struct HB_LangSysRecord_
{
HB_LangSys LangSys; /* LangSys table */
HB_UInt LangSysTag; /* LangSysTag identifier */
};
typedef struct HB_LangSysRecord_ HB_LangSysRecord;
struct HB_ScriptTable_
{
HB_LangSysRecord* LangSysRecord; /* array of LangSysRecords */
HB_LangSys DefaultLangSys; /* DefaultLangSys table */
HB_UShort LangSysCount; /* number of LangSysRecords */
};
typedef struct HB_ScriptTable_ HB_ScriptTable;
struct HB_ScriptRecord_
{
HB_UInt ScriptTag; /* ScriptTag identifier */
HB_ScriptTable Script; /* Script table */
};
typedef struct HB_ScriptRecord_ HB_ScriptRecord;
struct HB_ScriptList_
{
HB_ScriptRecord* ScriptRecord; /* array of ScriptRecords */
HB_UShort ScriptCount; /* number of ScriptRecords */
};
typedef struct HB_ScriptList_ HB_ScriptList;
/* Feature list related structures */
struct HB_Feature_
{
HB_UShort* LookupListIndex; /* array of LookupList indices */
HB_UShort FeatureParams; /* always 0 for TT Open 1.0 */
HB_UShort LookupListCount; /* number of LookupList indices */
};
typedef struct HB_Feature_ HB_Feature;
struct HB_FeatureRecord_
{
HB_UInt FeatureTag; /* FeatureTag identifier */
HB_Feature Feature; /* Feature table */
};
typedef struct HB_FeatureRecord_ HB_FeatureRecord;
struct HB_FeatureList_
{
HB_UShort* ApplyOrder; /* order to apply features */
HB_FeatureRecord* FeatureRecord; /* array of FeatureRecords */
HB_UShort FeatureCount; /* number of FeatureRecords */
HB_UShort ApplyCount; /* number of elements in ApplyOrder */
};
typedef struct HB_FeatureList_ HB_FeatureList;
/* Lookup list related structures */
typedef struct HB_SubTable_ HB_SubTable;
struct HB_Lookup_
{
HB_SubTable* SubTable; /* array of SubTables */
HB_UShort LookupType; /* Lookup type */
HB_UShort LookupFlag; /* Lookup qualifiers */
HB_UShort SubTableCount; /* number of SubTables */
};
typedef struct HB_Lookup_ HB_Lookup;
/* The `Properties' field is not defined in the OpenType specification but
is needed for processing lookups. If properties[n] is > 0, the
functions HB_GSUB_Apply_String() resp. HB_GPOS_Apply_String() will
process Lookup[n] for glyphs which have the specific bit not set in
the `properties' field of the input string object. */
struct HB_LookupList_
{
HB_Lookup* Lookup; /* array of Lookup records */
HB_UInt* Properties; /* array of flags */
HB_UShort LookupCount; /* number of Lookups */
};
typedef struct HB_LookupList_ HB_LookupList;
/* Possible LookupFlag bit masks. `HB_LOOKUP_FLAG_IGNORE_SPECIAL_MARKS' comes from the
OpenType 1.2 specification; HB_LOOKUP_FLAG_RIGHT_TO_LEFT has been (re)introduced in
OpenType 1.3 -- if set, the last glyph in a cursive attachment
sequence has to be positioned on the baseline -- regardless of the
writing direction. */
#define HB_LOOKUP_FLAG_RIGHT_TO_LEFT 0x0001
#define HB_LOOKUP_FLAG_IGNORE_BASE_GLYPHS 0x0002
#define HB_LOOKUP_FLAG_IGNORE_LIGATURES 0x0004
#define HB_LOOKUP_FLAG_IGNORE_MARKS 0x0008
#define HB_LOOKUP_FLAG_IGNORE_SPECIAL_MARKS 0xFF00
struct HB_CoverageFormat1_
{
HB_UShort* GlyphArray; /* array of glyph IDs */
HB_UShort GlyphCount; /* number of glyphs in GlyphArray */
};
typedef struct HB_CoverageFormat1_ HB_CoverageFormat1;
struct HB_RangeRecord_
{
HB_UShort Start; /* first glyph ID in the range */
HB_UShort End; /* last glyph ID in the range */
HB_UShort StartCoverageIndex; /* coverage index of first
glyph ID in the range */
};
typedef struct HB_RangeRecord_ HB_RangeRecord;
struct HB_CoverageFormat2_
{
HB_RangeRecord* RangeRecord; /* array of RangeRecords */
HB_UShort RangeCount; /* number of RangeRecords */
};
typedef struct HB_CoverageFormat2_ HB_CoverageFormat2;
struct HB_Coverage_
{
HB_Byte CoverageFormat; /* 1 or 2 */
union
{
HB_CoverageFormat1 cf1;
HB_CoverageFormat2 cf2;
} cf;
};
typedef struct HB_Coverage_ HB_Coverage;
struct HB_ClassDefFormat1_
{
HB_UShort* ClassValueArray; /* array of class values */
HB_UShort StartGlyph; /* first glyph ID of the
ClassValueArray */
HB_UShort GlyphCount; /* size of the ClassValueArray */
};
typedef struct HB_ClassDefFormat1_ HB_ClassDefFormat1;
struct HB_ClassRangeRecord_
{
HB_UShort Start; /* first glyph ID in the range */
HB_UShort End; /* last glyph ID in the range */
HB_UShort Class; /* applied to all glyphs in range */
};
typedef struct HB_ClassRangeRecord_ HB_ClassRangeRecord;
struct HB_ClassDefFormat2_
{
HB_ClassRangeRecord* ClassRangeRecord;
/* array of ClassRangeRecords */
HB_UShort ClassRangeCount;
/* number of ClassRangeRecords */
};
typedef struct HB_ClassDefFormat2_ HB_ClassDefFormat2;
struct HB_ClassDefinition_
{
union
{
HB_ClassDefFormat1 cd1;
HB_ClassDefFormat2 cd2;
} cd;
HB_Byte ClassFormat; /* 1 or 2 */
HB_Bool loaded;
};
typedef struct HB_ClassDefinition_ HB_ClassDefinition;
struct HB_Device_
{
HB_UShort* DeltaValue; /* array of compressed data */
HB_UShort StartSize; /* smallest size to correct */
HB_UShort EndSize; /* largest size to correct */
HB_Byte DeltaFormat; /* DeltaValue array data format:
1, 2, or 3 */
};
typedef struct HB_Device_ HB_Device;
enum HB_Type_
{
HB_Type_GSUB,
HB_Type_GPOS
};
typedef enum HB_Type_ HB_Type;
#ifdef HB_USE_PACKED_STRUCTS
#pragma pack(pop)
#endif
HB_END_HEADER
#endif /* HARFBUZZ_OPEN_H */