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wine/dlls/usp10/shape.c

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/*
* Implementation of Shaping for the Uniscribe Script Processor (usp10.dll)
*
* Copyright 2010 CodeWeavers, Aric Stewart
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
*/
#include <stdarg.h>
#include <stdlib.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "winnls.h"
#include "usp10.h"
#include "winternl.h"
#include "usp10_internal.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(uniscribe);
#define FIRST_ARABIC_CHAR 0x0600
#define LAST_ARABIC_CHAR 0x06ff
typedef VOID (*ContextualShapingProc)(HDC, ScriptCache*, SCRIPT_ANALYSIS*,
WCHAR*, INT, WORD*, INT*, INT, WORD*);
static void ContextualShape_Arabic(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
static void ContextualShape_Syriac(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
static void ContextualShape_Phags_pa(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
static void ContextualShape_Sinhala(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
static void ContextualShape_Devanagari(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
static void ContextualShape_Bengali(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
static void ContextualShape_Gurmukhi(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
static void ContextualShape_Gujarati(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
static void ContextualShape_Oriya(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
static void ContextualShape_Tamil(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
static void ContextualShape_Telugu(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
static void ContextualShape_Kannada(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
static void ContextualShape_Malayalam(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
static void ContextualShape_Khmer(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
static void ContextualShape_Mongolian(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
typedef VOID (*ShapeCharGlyphPropProc)( HDC , ScriptCache*, SCRIPT_ANALYSIS*, const WCHAR*, const INT, const WORD*, const INT, WORD*, SCRIPT_CHARPROP*, SCRIPT_GLYPHPROP*);
static void ShapeCharGlyphProp_Default( HDC hdc, ScriptCache* psc, SCRIPT_ANALYSIS* psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD* pwLogClust, SCRIPT_CHARPROP* pCharProp, SCRIPT_GLYPHPROP* pGlyphProp);
static void ShapeCharGlyphProp_Arabic( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP* pCharProp, SCRIPT_GLYPHPROP *pGlyphProp );
static void ShapeCharGlyphProp_Thai( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp );
static void ShapeCharGlyphProp_None( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp );
static void ShapeCharGlyphProp_Tibet( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp );
static void ShapeCharGlyphProp_Sinhala( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp );
static void ShapeCharGlyphProp_Devanagari( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp );
static void ShapeCharGlyphProp_Bengali( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp );
static void ShapeCharGlyphProp_Gurmukhi( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp );
static void ShapeCharGlyphProp_Gujarati( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp );
static void ShapeCharGlyphProp_Oriya( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp );
static void ShapeCharGlyphProp_Tamil( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp );
static void ShapeCharGlyphProp_Telugu( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp );
static void ShapeCharGlyphProp_Kannada( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp );
static void ShapeCharGlyphProp_Malayalam( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp );
static void ShapeCharGlyphProp_Khmer( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp );
extern const unsigned short indic_syllabic_table[];
extern const unsigned short wine_shaping_table[];
extern const unsigned short wine_shaping_forms[LAST_ARABIC_CHAR - FIRST_ARABIC_CHAR + 1][4];
enum joining_types {
jtU,
jtT,
jtR,
jtL,
jtD,
jtC
};
enum joined_forms {
Xn=0,
Xr,
Xl,
Xm,
/* Syriac Alaph */
Afj,
Afn,
Afx
};
#ifdef WORDS_BIGENDIAN
#define GET_BE_WORD(x) (x)
#define GET_BE_DWORD(x) (x)
#else
#define GET_BE_WORD(x) RtlUshortByteSwap(x)
#define GET_BE_DWORD(x) RtlUlongByteSwap(x)
#endif
/* These are all structures needed for the GSUB table */
#define GSUB_TAG MS_MAKE_TAG('G', 'S', 'U', 'B')
#define GSUB_E_NOFEATURE -2
#define GSUB_E_NOGLYPH -1
typedef struct {
DWORD version;
WORD ScriptList;
WORD FeatureList;
WORD LookupList;
} GSUB_Header;
typedef struct {
CHAR ScriptTag[4];
WORD Script;
} GSUB_ScriptRecord;
typedef struct {
WORD ScriptCount;
GSUB_ScriptRecord ScriptRecord[1];
} GSUB_ScriptList;
typedef struct {
CHAR LangSysTag[4];
WORD LangSys;
} GSUB_LangSysRecord;
typedef struct {
WORD DefaultLangSys;
WORD LangSysCount;
GSUB_LangSysRecord LangSysRecord[1];
} GSUB_Script;
typedef struct {
WORD LookupOrder; /* Reserved */
WORD ReqFeatureIndex;
WORD FeatureCount;
WORD FeatureIndex[1];
} GSUB_LangSys;
typedef struct {
CHAR FeatureTag[4];
WORD Feature;
} GSUB_FeatureRecord;
typedef struct {
WORD FeatureCount;
GSUB_FeatureRecord FeatureRecord[1];
} GSUB_FeatureList;
typedef struct {
WORD FeatureParams; /* Reserved */
WORD LookupCount;
WORD LookupListIndex[1];
} GSUB_Feature;
typedef struct {
WORD LookupCount;
WORD Lookup[1];
} GSUB_LookupList;
typedef struct {
WORD LookupType;
WORD LookupFlag;
WORD SubTableCount;
WORD SubTable[1];
} GSUB_LookupTable;
typedef struct {
WORD CoverageFormat;
WORD GlyphCount;
WORD GlyphArray[1];
} GSUB_CoverageFormat1;
typedef struct {
WORD Start;
WORD End;
WORD StartCoverageIndex;
} GSUB_RangeRecord;
typedef struct {
WORD CoverageFormat;
WORD RangeCount;
GSUB_RangeRecord RangeRecord[1];
} GSUB_CoverageFormat2;
typedef struct {
WORD SubstFormat; /* = 1 */
WORD Coverage;
WORD DeltaGlyphID;
} GSUB_SingleSubstFormat1;
typedef struct {
WORD SubstFormat; /* = 2 */
WORD Coverage;
WORD GlyphCount;
WORD Substitute[1];
}GSUB_SingleSubstFormat2;
typedef struct {
WORD SubstFormat; /* = 1 */
WORD Coverage;
WORD SequenceCount;
WORD Sequence[1];
}GSUB_MultipleSubstFormat1;
typedef struct {
WORD GlyphCount;
WORD Substitute[1];
}GSUB_Sequence;
typedef struct {
WORD SubstFormat; /* = 1 */
WORD Coverage;
WORD LigSetCount;
WORD LigatureSet[1];
}GSUB_LigatureSubstFormat1;
typedef struct {
WORD LigatureCount;
WORD Ligature[1];
}GSUB_LigatureSet;
typedef struct{
WORD LigGlyph;
WORD CompCount;
WORD Component[1];
}GSUB_Ligature;
typedef struct{
WORD SequenceIndex;
WORD LookupListIndex;
}GSUB_SubstLookupRecord;
typedef struct{
WORD SubstFormat; /* = 1 */
WORD Coverage;
WORD ChainSubRuleSetCount;
WORD ChainSubRuleSet[1];
}GSUB_ChainContextSubstFormat1;
typedef struct {
WORD SubstFormat; /* = 3 */
WORD BacktrackGlyphCount;
WORD Coverage[1];
}GSUB_ChainContextSubstFormat3_1;
typedef struct{
WORD InputGlyphCount;
WORD Coverage[1];
}GSUB_ChainContextSubstFormat3_2;
typedef struct{
WORD LookaheadGlyphCount;
WORD Coverage[1];
}GSUB_ChainContextSubstFormat3_3;
typedef struct{
WORD SubstCount;
GSUB_SubstLookupRecord SubstLookupRecord[1];
}GSUB_ChainContextSubstFormat3_4;
typedef struct {
WORD SubstFormat; /* = 1 */
WORD Coverage;
WORD AlternateSetCount;
WORD AlternateSet[1];
} GSUB_AlternateSubstFormat1;
typedef struct{
WORD GlyphCount;
WORD Alternate[1];
} GSUB_AlternateSet;
/* These are all structures needed for the GDEF table */
#define GDEF_TAG MS_MAKE_TAG('G', 'D', 'E', 'F')
enum {BaseGlyph=1, LigatureGlyph, MarkGlyph, ComponentGlyph};
typedef struct {
DWORD Version;
WORD GlyphClassDef;
WORD AttachList;
WORD LigCaretList;
WORD MarkAttachClassDef;
} GDEF_Header;
typedef struct {
WORD ClassFormat;
WORD StartGlyph;
WORD GlyphCount;
WORD ClassValueArray[1];
} GDEF_ClassDefFormat1;
typedef struct {
WORD Start;
WORD End;
WORD Class;
} GDEF_ClassRangeRecord;
typedef struct {
WORD ClassFormat;
WORD ClassRangeCount;
GDEF_ClassRangeRecord ClassRangeRecord[1];
} GDEF_ClassDefFormat2;
/* These are all structures needed for the cmap format 12 table */
#define CMAP_TAG MS_MAKE_TAG('c', 'm', 'a', 'p')
typedef struct {
WORD platformID;
WORD encodingID;
DWORD offset;
} CMAP_EncodingRecord;
typedef struct {
WORD version;
WORD numTables;
CMAP_EncodingRecord tables[1];
} CMAP_Header;
typedef struct {
DWORD startCharCode;
DWORD endCharCode;
DWORD startGlyphID;
} CMAP_SegmentedCoverage_group;
typedef struct {
WORD format;
WORD reserved;
DWORD length;
DWORD language;
DWORD nGroups;
CMAP_SegmentedCoverage_group groups[1];
} CMAP_SegmentedCoverage;
static INT GSUB_apply_lookup(const GSUB_LookupList* lookup, INT lookup_index, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count);
static HRESULT GSUB_GetFontScriptTags(ScriptCache *psc, OPENTYPE_TAG searchingFor, int cMaxTags, OPENTYPE_TAG *pScriptTags, int *pcTags, LPCVOID* script_table);
static HRESULT GSUB_GetFontLanguageTags(ScriptCache *psc, OPENTYPE_TAG script_tag, OPENTYPE_TAG searchingFor, int cMaxTags, OPENTYPE_TAG *pLanguageTags, int *pcTags, LPCVOID* language_table);
static HRESULT GSUB_GetFontFeatureTags(ScriptCache *psc, OPENTYPE_TAG script_tag, OPENTYPE_TAG language_tag, BOOL filtered, OPENTYPE_TAG searchingFor, int cMaxTags, OPENTYPE_TAG *pFeatureTags, int *pcTags, LoadedFeature** feature);
typedef struct tagVowelComponents
{
WCHAR base;
WCHAR parts[3];
} VowelComponents;
typedef struct tagConsonantComponents
{
WCHAR parts[3];
WCHAR output;
} ConsonantComponents;
typedef void (*second_reorder_function)(LPWSTR pwChar, IndicSyllable *syllable,WORD* pwGlyphs, IndicSyllable* glyph_index, lexical_function lex);
/* the orders of joined_forms and contextual_features need to line up */
static const char* contextual_features[] =
{
"isol",
"fina",
"init",
"medi",
/* Syriac Alaph */
"med2",
"fin2",
"fin3"
};
static OPENTYPE_FEATURE_RECORD standard_features[] =
{
{ MS_MAKE_TAG('c','c','m','p'), 1},
{ MS_MAKE_TAG('l','o','c','l'), 1},
};
static OPENTYPE_FEATURE_RECORD latin_features[] =
{
{ MS_MAKE_TAG('l','i','g','a'), 1},
{ MS_MAKE_TAG('c','l','i','g'), 1},
};
static OPENTYPE_FEATURE_RECORD arabic_features[] =
{
{ MS_MAKE_TAG('r','l','i','g'), 1},
{ MS_MAKE_TAG('c','a','l','t'), 1},
{ MS_MAKE_TAG('l','i','g','a'), 1},
{ MS_MAKE_TAG('d','l','i','g'), 1},
{ MS_MAKE_TAG('c','s','w','h'), 1},
{ MS_MAKE_TAG('m','s','e','t'), 1},
};
static const char* required_arabic_features[] =
{
"fina",
"init",
"medi",
"rlig",
NULL
};
static OPENTYPE_FEATURE_RECORD hebrew_features[] =
{
{ MS_MAKE_TAG('d','l','i','g'), 0},
};
static OPENTYPE_FEATURE_RECORD syriac_features[] =
{
{ MS_MAKE_TAG('r','l','i','g'), 1},
{ MS_MAKE_TAG('c','a','l','t'), 1},
{ MS_MAKE_TAG('l','i','g','a'), 1},
{ MS_MAKE_TAG('d','l','i','g'), 1},
};
static const char* required_syriac_features[] =
{
"fina",
"fin2",
"fin3",
"init",
"medi",
"med2",
"rlig",
NULL
};
static OPENTYPE_FEATURE_RECORD sinhala_features[] =
{
/* Presentation forms */
{ MS_MAKE_TAG('b','l','w','s'), 1},
{ MS_MAKE_TAG('a','b','v','s'), 1},
{ MS_MAKE_TAG('p','s','t','s'), 1},
};
static OPENTYPE_FEATURE_RECORD tibetan_features[] =
{
{ MS_MAKE_TAG('a','b','v','s'), 1},
{ MS_MAKE_TAG('b','l','w','s'), 1},
};
static OPENTYPE_FEATURE_RECORD phags_features[] =
{
{ MS_MAKE_TAG('a','b','v','s'), 1},
{ MS_MAKE_TAG('b','l','w','s'), 1},
{ MS_MAKE_TAG('c','a','l','t'), 1},
};
static OPENTYPE_FEATURE_RECORD thai_features[] =
{
{ MS_MAKE_TAG('c','c','m','p'), 1},
};
static const char* required_lao_features[] =
{
"ccmp",
NULL
};
static const char* required_devanagari_features[] =
{
"nukt",
"akhn",
"rphf",
"blwf",
"half",
"vatu",
"pres",
"abvs",
"blws",
"psts",
"haln",
NULL
};
static OPENTYPE_FEATURE_RECORD devanagari_features[] =
{
{ MS_MAKE_TAG('p','r','e','s'), 1},
{ MS_MAKE_TAG('a','b','v','s'), 1},
{ MS_MAKE_TAG('b','l','w','s'), 1},
{ MS_MAKE_TAG('p','s','t','s'), 1},
{ MS_MAKE_TAG('h','a','l','n'), 1},
{ MS_MAKE_TAG('c','a','l','t'), 1},
};
static OPENTYPE_FEATURE_RECORD myanmar_features[] =
{
{ MS_MAKE_TAG('l','i','g','a'), 1},
{ MS_MAKE_TAG('c','l','i','g'), 1},
};
static const char* required_bengali_features[] =
{
"nukt",
"akhn",
"rphf",
"blwf",
"half",
"vatu",
"pstf",
"init",
"abvs",
"blws",
"psts",
"haln",
NULL
};
static const char* required_gurmukhi_features[] =
{
"nukt",
"akhn",
"rphf",
"blwf",
"half",
"pstf",
"vatu",
"cjct",
"pres",
"abvs",
"blws",
"psts",
"haln",
"calt",
NULL
};
static const char* required_oriya_features[] =
{
"nukt",
"akhn",
"rphf",
"blwf",
"pstf",
"cjct",
"pres",
"abvs",
"blws",
"psts",
"haln",
"calt",
NULL
};
static const char* required_tamil_features[] =
{
"nukt",
"akhn",
"rphf",
"pref",
"half",
"pres",
"abvs",
"blws",
"psts",
"haln",
"calt",
NULL
};
static const char* required_telugu_features[] =
{
"nukt",
"akhn",
"rphf",
"pref",
"half",
"pstf",
"cjct",
"pres",
"abvs",
"blws",
"psts",
"haln",
"calt",
NULL
};
static OPENTYPE_FEATURE_RECORD khmer_features[] =
{
{ MS_MAKE_TAG('p','r','e','s'), 1},
{ MS_MAKE_TAG('b','l','w','s'), 1},
{ MS_MAKE_TAG('a','b','v','s'), 1},
{ MS_MAKE_TAG('p','s','t','s'), 1},
{ MS_MAKE_TAG('c','l','i','g'), 1},
};
static const char* required_khmer_features[] =
{
"pref",
"blwf",
"abvf",
"pstf",
"pres",
"blws",
"abvs",
"psts",
"clig",
NULL
};
static OPENTYPE_FEATURE_RECORD no_features[] =
{ };
static OPENTYPE_FEATURE_RECORD ethiopic_features[] =
{
{ MS_MAKE_TAG('c','c','m','p'), 1},
{ MS_MAKE_TAG('l','o','c','l'), 1},
{ MS_MAKE_TAG('c','a','l','t'), 1},
{ MS_MAKE_TAG('l','i','g','a'), 1},
};
static OPENTYPE_FEATURE_RECORD mongolian_features[] =
{
{ MS_MAKE_TAG('c','c','m','p'), 1},
{ MS_MAKE_TAG('l','o','c','l'), 1},
{ MS_MAKE_TAG('c','a','l','t'), 1},
{ MS_MAKE_TAG('r','l','i','g'), 1},
};
typedef struct ScriptShapeDataTag {
TEXTRANGE_PROPERTIES defaultTextRange;
const char** requiredFeatures;
OPENTYPE_TAG newOtTag;
ContextualShapingProc contextProc;
ShapeCharGlyphPropProc charGlyphPropProc;
} ScriptShapeData;
/* in order of scripts */
static const ScriptShapeData ShapingData[] =
{
{{ standard_features, 2}, NULL, 0, NULL, NULL},
{{ latin_features, 2}, NULL, 0, NULL, NULL},
{{ latin_features, 2}, NULL, 0, NULL, NULL},
{{ latin_features, 2}, NULL, 0, NULL, NULL},
{{ standard_features, 2}, NULL, 0, NULL, NULL},
{{ latin_features, 2}, NULL, 0, NULL, NULL},
{{ arabic_features, 6}, required_arabic_features, 0, ContextualShape_Arabic, ShapeCharGlyphProp_Arabic},
{{ arabic_features, 6}, required_arabic_features, 0, ContextualShape_Arabic, ShapeCharGlyphProp_Arabic},
{{ hebrew_features, 1}, NULL, 0, NULL, NULL},
{{ syriac_features, 4}, required_syriac_features, 0, ContextualShape_Syriac, ShapeCharGlyphProp_None},
{{ arabic_features, 6}, required_arabic_features, 0, ContextualShape_Arabic, ShapeCharGlyphProp_Arabic},
{{ NULL, 0}, NULL, 0, NULL, ShapeCharGlyphProp_None},
{{ standard_features, 2}, NULL, 0, NULL, NULL},
{{ standard_features, 2}, NULL, 0, NULL, NULL},
{{ standard_features, 2}, NULL, 0, NULL, NULL},
{{ standard_features, 2}, NULL, 0, NULL, NULL},
{{ sinhala_features, 3}, NULL, 0, ContextualShape_Sinhala, ShapeCharGlyphProp_Sinhala},
{{ tibetan_features, 2}, NULL, 0, NULL, ShapeCharGlyphProp_Tibet},
{{ tibetan_features, 2}, NULL, 0, NULL, ShapeCharGlyphProp_Tibet},
{{ phags_features, 3}, NULL, 0, ContextualShape_Phags_pa, ShapeCharGlyphProp_Thai},
{{ thai_features, 1}, NULL, 0, NULL, ShapeCharGlyphProp_Thai},
{{ thai_features, 1}, NULL, 0, NULL, ShapeCharGlyphProp_Thai},
{{ thai_features, 1}, required_lao_features, 0, NULL, ShapeCharGlyphProp_Thai},
{{ thai_features, 1}, required_lao_features, 0, NULL, ShapeCharGlyphProp_Thai},
{{ devanagari_features, 6}, required_devanagari_features, MS_MAKE_TAG('d','e','v','2'), ContextualShape_Devanagari, ShapeCharGlyphProp_Devanagari},
{{ devanagari_features, 6}, required_devanagari_features, MS_MAKE_TAG('d','e','v','2'), ContextualShape_Devanagari, ShapeCharGlyphProp_Devanagari},
{{ devanagari_features, 6}, required_bengali_features, MS_MAKE_TAG('b','n','g','2'), ContextualShape_Bengali, ShapeCharGlyphProp_Bengali},
{{ devanagari_features, 6}, required_bengali_features, MS_MAKE_TAG('b','n','g','2'), ContextualShape_Bengali, ShapeCharGlyphProp_Bengali},
{{ devanagari_features, 6}, required_bengali_features, MS_MAKE_TAG('b','n','g','2'), ContextualShape_Bengali, ShapeCharGlyphProp_Bengali},
{{ devanagari_features, 6}, required_gurmukhi_features, MS_MAKE_TAG('g','u','r','2'), ContextualShape_Gurmukhi, ShapeCharGlyphProp_Gurmukhi},
{{ devanagari_features, 6}, required_gurmukhi_features, MS_MAKE_TAG('g','u','r','2'), ContextualShape_Gurmukhi, ShapeCharGlyphProp_Gurmukhi},
{{ devanagari_features, 6}, required_devanagari_features, MS_MAKE_TAG('g','j','r','2'), ContextualShape_Gujarati, ShapeCharGlyphProp_Gujarati},
{{ devanagari_features, 6}, required_devanagari_features, MS_MAKE_TAG('g','j','r','2'), ContextualShape_Gujarati, ShapeCharGlyphProp_Gujarati},
{{ devanagari_features, 6}, required_devanagari_features, MS_MAKE_TAG('g','j','r','2'), ContextualShape_Gujarati, ShapeCharGlyphProp_Gujarati},
{{ devanagari_features, 6}, required_oriya_features, MS_MAKE_TAG('o','r','y','2'), ContextualShape_Oriya, ShapeCharGlyphProp_Oriya},
{{ devanagari_features, 6}, required_oriya_features, MS_MAKE_TAG('o','r','y','2'), ContextualShape_Oriya, ShapeCharGlyphProp_Oriya},
{{ devanagari_features, 6}, required_tamil_features, MS_MAKE_TAG('t','a','m','2'), ContextualShape_Tamil, ShapeCharGlyphProp_Tamil},
{{ devanagari_features, 6}, required_tamil_features, MS_MAKE_TAG('t','a','m','2'), ContextualShape_Tamil, ShapeCharGlyphProp_Tamil},
{{ devanagari_features, 6}, required_telugu_features, MS_MAKE_TAG('t','e','l','2'), ContextualShape_Telugu, ShapeCharGlyphProp_Telugu},
{{ devanagari_features, 6}, required_telugu_features, MS_MAKE_TAG('t','e','l','2'), ContextualShape_Telugu, ShapeCharGlyphProp_Telugu},
{{ devanagari_features, 6}, required_telugu_features, MS_MAKE_TAG('k','n','d','2'), ContextualShape_Kannada, ShapeCharGlyphProp_Kannada},
{{ devanagari_features, 6}, required_telugu_features, MS_MAKE_TAG('k','n','d','2'), ContextualShape_Kannada, ShapeCharGlyphProp_Kannada},
{{ devanagari_features, 6}, required_telugu_features, MS_MAKE_TAG('m','l','m','2'), ContextualShape_Malayalam, ShapeCharGlyphProp_Malayalam},
{{ devanagari_features, 6}, required_telugu_features, MS_MAKE_TAG('m','l','m','2'), ContextualShape_Malayalam, ShapeCharGlyphProp_Malayalam},
{{ standard_features, 2}, NULL, 0, NULL, NULL},
{{ latin_features, 2}, NULL, 0, NULL, NULL},
{{ standard_features, 2}, NULL, 0, NULL, NULL},
{{ myanmar_features, 2}, NULL, 0, NULL, NULL},
{{ myanmar_features, 2}, NULL, 0, NULL, NULL},
{{ standard_features, 2}, NULL, 0, NULL, NULL},
{{ standard_features, 2}, NULL, 0, NULL, NULL},
{{ standard_features, 2}, NULL, 0, NULL, NULL},
{{ khmer_features, 5}, required_khmer_features, 0, ContextualShape_Khmer, ShapeCharGlyphProp_Khmer},
{{ khmer_features, 5}, required_khmer_features, 0, ContextualShape_Khmer, ShapeCharGlyphProp_Khmer},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ ethiopic_features, 4}, NULL, 0, NULL, NULL},
{{ ethiopic_features, 4}, NULL, 0, NULL, NULL},
{{ mongolian_features, 4}, NULL, 0, ContextualShape_Mongolian, NULL},
{{ mongolian_features, 4}, NULL, 0, ContextualShape_Mongolian, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ no_features, 0}, NULL, 0, NULL, NULL},
{{ hebrew_features, 1}, NULL, 0, NULL, NULL},
{{ latin_features, 2}, NULL, 0, NULL, NULL},
{{ thai_features, 1}, NULL, 0, NULL, ShapeCharGlyphProp_Thai},
};
extern scriptData scriptInformation[];
static INT GSUB_is_glyph_covered(LPCVOID table , UINT glyph)
{
const GSUB_CoverageFormat1* cf1;
cf1 = table;
if (GET_BE_WORD(cf1->CoverageFormat) == 1)
{
int count = GET_BE_WORD(cf1->GlyphCount);
int i;
TRACE("Coverage Format 1, %i glyphs\n",count);
for (i = 0; i < count; i++)
if (glyph == GET_BE_WORD(cf1->GlyphArray[i]))
return i;
return -1;
}
else if (GET_BE_WORD(cf1->CoverageFormat) == 2)
{
const GSUB_CoverageFormat2* cf2;
int i;
int count;
cf2 = (const GSUB_CoverageFormat2*)cf1;
count = GET_BE_WORD(cf2->RangeCount);
TRACE("Coverage Format 2, %i ranges\n",count);
for (i = 0; i < count; i++)
{
if (glyph < GET_BE_WORD(cf2->RangeRecord[i].Start))
return -1;
if ((glyph >= GET_BE_WORD(cf2->RangeRecord[i].Start)) &&
(glyph <= GET_BE_WORD(cf2->RangeRecord[i].End)))
{
return (GET_BE_WORD(cf2->RangeRecord[i].StartCoverageIndex) +
glyph - GET_BE_WORD(cf2->RangeRecord[i].Start));
}
}
return -1;
}
else
ERR("Unknown CoverageFormat %i\n",GET_BE_WORD(cf1->CoverageFormat));
return -1;
}
static INT GSUB_apply_SingleSubst(const GSUB_LookupTable *look, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
{
int j;
TRACE("Single Substitution Subtable\n");
for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
{
int offset;
const GSUB_SingleSubstFormat1 *ssf1;
offset = GET_BE_WORD(look->SubTable[j]);
ssf1 = (const GSUB_SingleSubstFormat1*)((const BYTE*)look+offset);
if (GET_BE_WORD(ssf1->SubstFormat) == 1)
{
int offset = GET_BE_WORD(ssf1->Coverage);
TRACE(" subtype 1, delta %i\n", GET_BE_WORD(ssf1->DeltaGlyphID));
if (GSUB_is_glyph_covered((const BYTE*)ssf1+offset, glyphs[glyph_index]) != -1)
{
TRACE(" Glyph 0x%x ->",glyphs[glyph_index]);
glyphs[glyph_index] = glyphs[glyph_index] + GET_BE_WORD(ssf1->DeltaGlyphID);
TRACE(" 0x%x\n",glyphs[glyph_index]);
return glyph_index + write_dir;
}
}
else
{
const GSUB_SingleSubstFormat2 *ssf2;
INT index;
INT offset;
ssf2 = (const GSUB_SingleSubstFormat2 *)ssf1;
offset = GET_BE_WORD(ssf1->Coverage);
TRACE(" subtype 2, glyph count %i\n", GET_BE_WORD(ssf2->GlyphCount));
index = GSUB_is_glyph_covered((const BYTE*)ssf2+offset, glyphs[glyph_index]);
TRACE(" Coverage index %i\n",index);
if (index != -1)
{
if (glyphs[glyph_index] == GET_BE_WORD(ssf2->Substitute[index]))
return GSUB_E_NOGLYPH;
TRACE(" Glyph is 0x%x ->",glyphs[glyph_index]);
glyphs[glyph_index] = GET_BE_WORD(ssf2->Substitute[index]);
TRACE("0x%x\n",glyphs[glyph_index]);
return glyph_index + write_dir;
}
}
}
return GSUB_E_NOGLYPH;
}
static INT GSUB_apply_MultipleSubst(const GSUB_LookupTable *look, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
{
int j;
TRACE("Multiple Substitution Subtable\n");
for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
{
int offset, index;
const GSUB_MultipleSubstFormat1 *msf1;
offset = GET_BE_WORD(look->SubTable[j]);
msf1 = (const GSUB_MultipleSubstFormat1*)((const BYTE*)look+offset);
offset = GET_BE_WORD(msf1->Coverage);
index = GSUB_is_glyph_covered((const BYTE*)msf1+offset, glyphs[glyph_index]);
if (index != -1)
{
const GSUB_Sequence *seq;
int sub_count;
int j;
offset = GET_BE_WORD(msf1->Sequence[index]);
seq = (const GSUB_Sequence*)((const BYTE*)msf1+offset);
sub_count = GET_BE_WORD(seq->GlyphCount);
TRACE(" Glyph 0x%x (+%i)->",glyphs[glyph_index],(sub_count-1));
for (j = (*glyph_count)+(sub_count-1); j > glyph_index; j--)
glyphs[j] =glyphs[j-(sub_count-1)];
for (j = 0; j < sub_count; j++)
if (write_dir < 0)
glyphs[glyph_index + (sub_count-1) - j] = GET_BE_WORD(seq->Substitute[j]);
else
glyphs[glyph_index + j] = GET_BE_WORD(seq->Substitute[j]);
*glyph_count = *glyph_count + (sub_count - 1);
if (TRACE_ON(uniscribe))
{
for (j = 0; j < sub_count; j++)
TRACE(" 0x%x",glyphs[glyph_index+j]);
TRACE("\n");
}
return glyph_index + (sub_count * write_dir);
}
}
return GSUB_E_NOGLYPH;
}
static INT GSUB_apply_AlternateSubst(const GSUB_LookupTable *look, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
{
int j;
TRACE("Alternate Substitution Subtable\n");
for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
{
int offset;
const GSUB_AlternateSubstFormat1 *asf1;
INT index;
offset = GET_BE_WORD(look->SubTable[j]);
asf1 = (const GSUB_AlternateSubstFormat1*)((const BYTE*)look+offset);
offset = GET_BE_WORD(asf1->Coverage);
index = GSUB_is_glyph_covered((const BYTE*)asf1+offset, glyphs[glyph_index]);
if (index != -1)
{
const GSUB_AlternateSet *as;
offset = GET_BE_WORD(asf1->AlternateSet[index]);
as = (const GSUB_AlternateSet*)((const BYTE*)asf1+offset);
FIXME("%i alternates, picking index 0\n",GET_BE_WORD(as->GlyphCount));
if (glyphs[glyph_index] == GET_BE_WORD(as->Alternate[0]))
return GSUB_E_NOGLYPH;
TRACE(" Glyph 0x%x ->",glyphs[glyph_index]);
glyphs[glyph_index] = GET_BE_WORD(as->Alternate[0]);
TRACE(" 0x%x\n",glyphs[glyph_index]);
return glyph_index + write_dir;
}
}
return GSUB_E_NOGLYPH;
}
static INT GSUB_apply_LigatureSubst(const GSUB_LookupTable *look, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
{
int j;
TRACE("Ligature Substitution Subtable\n");
for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
{
const GSUB_LigatureSubstFormat1 *lsf1;
int offset,index;
offset = GET_BE_WORD(look->SubTable[j]);
lsf1 = (const GSUB_LigatureSubstFormat1*)((const BYTE*)look+offset);
offset = GET_BE_WORD(lsf1->Coverage);
index = GSUB_is_glyph_covered((const BYTE*)lsf1+offset, glyphs[glyph_index]);
TRACE(" Coverage index %i\n",index);
if (index != -1)
{
const GSUB_LigatureSet *ls;
int k, count;
offset = GET_BE_WORD(lsf1->LigatureSet[index]);
ls = (const GSUB_LigatureSet*)((const BYTE*)lsf1+offset);
count = GET_BE_WORD(ls->LigatureCount);
TRACE(" LigatureSet has %i members\n",count);
for (k = 0; k < count; k++)
{
const GSUB_Ligature *lig;
int CompCount,l,CompIndex;
offset = GET_BE_WORD(ls->Ligature[k]);
lig = (const GSUB_Ligature*)((const BYTE*)ls+offset);
CompCount = GET_BE_WORD(lig->CompCount) - 1;
CompIndex = glyph_index+write_dir;
for (l = 0; l < CompCount && CompIndex >= 0 && CompIndex < *glyph_count; l++)
{
int CompGlyph;
CompGlyph = GET_BE_WORD(lig->Component[l]);
if (CompGlyph != glyphs[CompIndex])
break;
CompIndex += write_dir;
}
if (l == CompCount)
{
int replaceIdx = glyph_index;
if (write_dir < 0)
replaceIdx = glyph_index - CompCount;
TRACE(" Glyph is 0x%x (+%i) ->",glyphs[glyph_index],CompCount);
glyphs[replaceIdx] = GET_BE_WORD(lig->LigGlyph);
TRACE("0x%x\n",glyphs[replaceIdx]);
if (CompCount > 0)
{
int j;
for (j = replaceIdx + 1; j < *glyph_count; j++)
glyphs[j] =glyphs[j+CompCount];
*glyph_count = *glyph_count - CompCount;
}
return replaceIdx + write_dir;
}
}
}
}
return GSUB_E_NOGLYPH;
}
static INT GSUB_apply_ChainContextSubst(const GSUB_LookupList* lookup, const GSUB_LookupTable *look, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
{
int j;
BOOL done = FALSE;
TRACE("Chaining Contextual Substitution Subtable\n");
for (j = 0; j < GET_BE_WORD(look->SubTableCount) && !done; j++)
{
const GSUB_ChainContextSubstFormat1 *ccsf1;
int offset;
int dirLookahead = write_dir;
int dirBacktrack = -1 * write_dir;
offset = GET_BE_WORD(look->SubTable[j]);
ccsf1 = (const GSUB_ChainContextSubstFormat1*)((const BYTE*)look+offset);
if (GET_BE_WORD(ccsf1->SubstFormat) == 1)
{
FIXME(" TODO: subtype 1 (Simple context glyph substitution)\n");
continue;
}
else if (GET_BE_WORD(ccsf1->SubstFormat) == 2)
{
FIXME(" TODO: subtype 2 (Class-based Chaining Context Glyph Substitution)\n");
continue;
}
else if (GET_BE_WORD(ccsf1->SubstFormat) == 3)
{
int k;
int indexGlyphs;
const GSUB_ChainContextSubstFormat3_1 *ccsf3_1;
const GSUB_ChainContextSubstFormat3_2 *ccsf3_2;
const GSUB_ChainContextSubstFormat3_3 *ccsf3_3;
const GSUB_ChainContextSubstFormat3_4 *ccsf3_4;
int newIndex = glyph_index;
ccsf3_1 = (const GSUB_ChainContextSubstFormat3_1 *)ccsf1;
TRACE(" subtype 3 (Coverage-based Chaining Context Glyph Substitution)\n");
for (k = 0; k < GET_BE_WORD(ccsf3_1->BacktrackGlyphCount); k++)
{
offset = GET_BE_WORD(ccsf3_1->Coverage[k]);
if (GSUB_is_glyph_covered((const BYTE*)ccsf3_1+offset, glyphs[glyph_index + (dirBacktrack * (k+1))]) == -1)
break;
}
if (k != GET_BE_WORD(ccsf3_1->BacktrackGlyphCount))
continue;
TRACE("Matched Backtrack\n");
ccsf3_2 = (const GSUB_ChainContextSubstFormat3_2 *)(((LPBYTE)ccsf1)+sizeof(GSUB_ChainContextSubstFormat3_1) + (sizeof(WORD) * (GET_BE_WORD(ccsf3_1->BacktrackGlyphCount)-1)));
indexGlyphs = GET_BE_WORD(ccsf3_2->InputGlyphCount);
for (k = 0; k < indexGlyphs; k++)
{
offset = GET_BE_WORD(ccsf3_2->Coverage[k]);
if (GSUB_is_glyph_covered((const BYTE*)ccsf3_1+offset, glyphs[glyph_index + (write_dir * k)]) == -1)
break;
}
if (k != indexGlyphs)
continue;
TRACE("Matched IndexGlyphs\n");
ccsf3_3 = (const GSUB_ChainContextSubstFormat3_3 *)(((LPBYTE)ccsf3_2)+sizeof(GSUB_ChainContextSubstFormat3_2) + (sizeof(WORD) * (GET_BE_WORD(ccsf3_2->InputGlyphCount)-1)));
for (k = 0; k < GET_BE_WORD(ccsf3_3->LookaheadGlyphCount); k++)
{
offset = GET_BE_WORD(ccsf3_3->Coverage[k]);
if (GSUB_is_glyph_covered((const BYTE*)ccsf3_1+offset, glyphs[glyph_index + (dirLookahead * (indexGlyphs + k))]) == -1)
break;
}
if (k != GET_BE_WORD(ccsf3_3->LookaheadGlyphCount))
continue;
TRACE("Matched LookAhead\n");
ccsf3_4 = (const GSUB_ChainContextSubstFormat3_4 *)(((LPBYTE)ccsf3_3)+sizeof(GSUB_ChainContextSubstFormat3_3) + (sizeof(WORD) * (GET_BE_WORD(ccsf3_3->LookaheadGlyphCount)-1)));
if (GET_BE_WORD(ccsf3_4->SubstCount))
{
for (k = 0; k < GET_BE_WORD(ccsf3_4->SubstCount); k++)
{
int lookupIndex = GET_BE_WORD(ccsf3_4->SubstLookupRecord[k].LookupListIndex);
int SequenceIndex = GET_BE_WORD(ccsf3_4->SubstLookupRecord[k].SequenceIndex) * write_dir;
TRACE("SUBST: %i -> %i %i\n",k, SequenceIndex, lookupIndex);
newIndex = GSUB_apply_lookup(lookup, lookupIndex, glyphs, glyph_index + SequenceIndex, write_dir, glyph_count);
if (newIndex == -1)
{
ERR("Chain failed to generate a glyph\n");
continue;
}
}
return newIndex;
}
else return GSUB_E_NOGLYPH;
}
}
return -1;
}
static INT GSUB_apply_lookup(const GSUB_LookupList* lookup, INT lookup_index, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
{
int offset;
const GSUB_LookupTable *look;
offset = GET_BE_WORD(lookup->Lookup[lookup_index]);
look = (const GSUB_LookupTable*)((const BYTE*)lookup + offset);
TRACE("type %i, flag %x, subtables %i\n",GET_BE_WORD(look->LookupType),GET_BE_WORD(look->LookupFlag),GET_BE_WORD(look->SubTableCount));
switch(GET_BE_WORD(look->LookupType))
{
case 1:
return GSUB_apply_SingleSubst(look, glyphs, glyph_index, write_dir, glyph_count);
case 2:
return GSUB_apply_MultipleSubst(look, glyphs, glyph_index, write_dir, glyph_count);
case 3:
return GSUB_apply_AlternateSubst(look, glyphs, glyph_index, write_dir, glyph_count);
case 4:
return GSUB_apply_LigatureSubst(look, glyphs, glyph_index, write_dir, glyph_count);
case 6:
return GSUB_apply_ChainContextSubst(lookup, look, glyphs, glyph_index, write_dir, glyph_count);
default:
FIXME("We do not handle SubType %i\n",GET_BE_WORD(look->LookupType));
}
return GSUB_E_NOGLYPH;
}
static INT GSUB_apply_feature_all_lookups(const GSUB_Header * header, const GSUB_Feature* feature, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
{
int i;
int out_index = GSUB_E_NOGLYPH;
const GSUB_LookupList *lookup;
lookup = (const GSUB_LookupList*)((const BYTE*)header + GET_BE_WORD(header->LookupList));
TRACE("%i lookups\n", GET_BE_WORD(feature->LookupCount));
for (i = 0; i < GET_BE_WORD(feature->LookupCount); i++)
{
out_index = GSUB_apply_lookup(lookup, GET_BE_WORD(feature->LookupListIndex[i]), glyphs, glyph_index, write_dir, glyph_count);
if (out_index != GSUB_E_NOGLYPH)
break;
}
if (out_index == GSUB_E_NOGLYPH)
TRACE("lookups found no glyphs\n");
else
{
int out2;
out2 = GSUB_apply_feature_all_lookups(header, feature, glyphs, glyph_index, write_dir, glyph_count);
if (out2!=GSUB_E_NOGLYPH)
out_index = out2;
}
return out_index;
}
static OPENTYPE_TAG get_opentype_script(HDC hdc, SCRIPT_ANALYSIS *psa, ScriptCache *psc, BOOL tryNew)
{
UINT charset;
if (psc->userScript != 0)
{
if (tryNew && ShapingData[psa->eScript].newOtTag != 0 && psc->userScript == scriptInformation[psa->eScript].scriptTag)
return ShapingData[psa->eScript].newOtTag;
else
return psc->userScript;
}
if (tryNew && ShapingData[psa->eScript].newOtTag != 0)
return ShapingData[psa->eScript].newOtTag;
if (scriptInformation[psa->eScript].scriptTag)
return scriptInformation[psa->eScript].scriptTag;
/*
* fall back to the font charset
*/
charset = GetTextCharsetInfo(hdc, NULL, 0x0);
switch (charset)
{
case ANSI_CHARSET:
case BALTIC_CHARSET: return MS_MAKE_TAG('l','a','t','n');
case CHINESEBIG5_CHARSET: return MS_MAKE_TAG('h','a','n','i');
case EASTEUROPE_CHARSET: return MS_MAKE_TAG('l','a','t','n'); /* ?? */
case GB2312_CHARSET: return MS_MAKE_TAG('h','a','n','i');
case GREEK_CHARSET: return MS_MAKE_TAG('g','r','e','k');
case HANGUL_CHARSET: return MS_MAKE_TAG('h','a','n','g');
case RUSSIAN_CHARSET: return MS_MAKE_TAG('c','y','r','l');
case SHIFTJIS_CHARSET: return MS_MAKE_TAG('k','a','n','a');
case TURKISH_CHARSET: return MS_MAKE_TAG('l','a','t','n'); /* ?? */
case VIETNAMESE_CHARSET: return MS_MAKE_TAG('l','a','t','n');
case JOHAB_CHARSET: return MS_MAKE_TAG('l','a','t','n'); /* ?? */
case ARABIC_CHARSET: return MS_MAKE_TAG('a','r','a','b');
case HEBREW_CHARSET: return MS_MAKE_TAG('h','e','b','r');
case THAI_CHARSET: return MS_MAKE_TAG('t','h','a','i');
default: return MS_MAKE_TAG('l','a','t','n');
}
}
static LPCVOID load_GSUB_feature(HDC hdc, SCRIPT_ANALYSIS *psa, ScriptCache *psc, const char* feat)
{
LoadedFeature *feature = NULL;
if (psc->GSUB_Table)
{
int attempt = 2;
OPENTYPE_TAG tags;
OPENTYPE_TAG language;
OPENTYPE_TAG script;
int cTags;
do
{
script = get_opentype_script(hdc,psa,psc,(attempt==2));
if (psc->userLang != 0)
language = psc->userLang;
else
language = MS_MAKE_TAG('d','f','l','t');
attempt--;
GSUB_GetFontFeatureTags(psc, script, language, FALSE, MS_MAKE_TAG(feat[0],feat[1],feat[2],feat[3]), 1, &tags, &cTags, &feature);
} while(attempt && !feature);
/* try in the default (latin) table */
if (!feature)
GSUB_GetFontFeatureTags(psc, MS_MAKE_TAG('l','a','t','n'), MS_MAKE_TAG('d','f','l','t'), FALSE, MS_MAKE_TAG(feat[0],feat[1],feat[2],feat[3]), 1, &tags, &cTags, &feature);
}
if (feature)
{
TRACE("Feature %s located at %p\n",debugstr_an(feat,4),feature->feature);
return feature->feature;
}
else
{
TRACE("Feature %s not located\n",debugstr_an(feat,4));
return NULL;
}
}
static INT apply_GSUB_feature_to_glyph(HDC hdc, SCRIPT_ANALYSIS *psa, ScriptCache* psc, WORD *glyphs, INT index, INT write_dir, INT* glyph_count, const char* feat)
{
const GSUB_Feature *feature;
feature = load_GSUB_feature(hdc, psa, psc, feat);
if (!feature)
return GSUB_E_NOFEATURE;
TRACE("applying feature %s\n",feat);
return GSUB_apply_feature_all_lookups(psc->GSUB_Table, feature, glyphs, index, write_dir, glyph_count);
}
static VOID *load_gsub_table(HDC hdc)
{
VOID* GSUB_Table = NULL;
int length = GetFontData(hdc, GSUB_TAG , 0, NULL, 0);
if (length != GDI_ERROR)
{
GSUB_Table = HeapAlloc(GetProcessHeap(),0,length);
GetFontData(hdc, GSUB_TAG , 0, GSUB_Table, length);
TRACE("Loaded GSUB table of %i bytes\n",length);
}
return GSUB_Table;
}
INT SHAPE_does_GSUB_feature_apply_to_chars(HDC hdc, SCRIPT_ANALYSIS *psa, ScriptCache* psc, const WCHAR *chars, INT write_dir, INT count, const char* feature)
{
WORD *glyphs;
INT glyph_count = count;
INT rc;
glyphs = HeapAlloc(GetProcessHeap(),0,sizeof(WORD)*(count*2));
GetGlyphIndicesW(hdc, chars, count, glyphs, 0);
rc = apply_GSUB_feature_to_glyph(hdc, psa, psc, glyphs, 0, write_dir, &glyph_count, feature);
if (rc > GSUB_E_NOGLYPH)
rc = count - glyph_count;
else
rc = 0;
HeapFree(GetProcessHeap(),0,glyphs);
return rc;
}
static WORD GDEF_get_glyph_class(const GDEF_Header *header, WORD glyph)
{
int offset;
WORD class = 0;
const GDEF_ClassDefFormat1 *cf1;
if (!header)
return 0;
offset = GET_BE_WORD(header->GlyphClassDef);
if (!offset)
return 0;
cf1 = (GDEF_ClassDefFormat1*)(((BYTE*)header)+offset);
if (GET_BE_WORD(cf1->ClassFormat) == 1)
{
if (glyph >= GET_BE_WORD(cf1->StartGlyph))
{
int index = glyph - GET_BE_WORD(cf1->StartGlyph);
if (index < GET_BE_WORD(cf1->GlyphCount))
class = GET_BE_WORD(cf1->ClassValueArray[index]);
}
}
else if (GET_BE_WORD(cf1->ClassFormat) == 2)
{
const GDEF_ClassDefFormat2 *cf2 = (GDEF_ClassDefFormat2*)cf1;
int i, top;
top = GET_BE_WORD(cf2->ClassRangeCount);
for (i = 0; i < top; i++)
{
if (glyph >= GET_BE_WORD(cf2->ClassRangeRecord[i].Start) &&
glyph <= GET_BE_WORD(cf2->ClassRangeRecord[i].End))
{
class = GET_BE_WORD(cf2->ClassRangeRecord[i].Class);
break;
}
}
}
else
ERR("Unknown Class Format %i\n",GET_BE_WORD(cf1->ClassFormat));
return class;
}
static VOID *load_gdef_table(HDC hdc)
{
VOID* GDEF_Table = NULL;
int length = GetFontData(hdc, GDEF_TAG , 0, NULL, 0);
if (length != GDI_ERROR)
{
GDEF_Table = HeapAlloc(GetProcessHeap(),0,length);
GetFontData(hdc, GDEF_TAG , 0, GDEF_Table, length);
TRACE("Loaded GDEF table of %i bytes\n",length);
}
return GDEF_Table;
}
static void GDEF_UpdateGlyphProps(HDC hdc, ScriptCache *psc, const WORD *pwGlyphs, const WORD cGlyphs, WORD* pwLogClust, const WORD cChars, SCRIPT_GLYPHPROP *pGlyphProp)
{
int i;
if (!psc->GDEF_Table)
psc->GDEF_Table = load_gdef_table(hdc);
for (i = 0; i < cGlyphs; i++)
{
WORD class;
int char_count = 0;
int k;
for (k = 0; k < cChars; k++)
if (pwLogClust[k] == i)
char_count++;
class = GDEF_get_glyph_class(psc->GDEF_Table, pwGlyphs[i]);
switch (class)
{
case 0:
case BaseGlyph:
pGlyphProp[i].sva.fClusterStart = 1;
pGlyphProp[i].sva.fDiacritic = 0;
pGlyphProp[i].sva.fZeroWidth = 0;
break;
case LigatureGlyph:
pGlyphProp[i].sva.fClusterStart = 1;
pGlyphProp[i].sva.fDiacritic = 0;
pGlyphProp[i].sva.fZeroWidth = 0;
break;
case MarkGlyph:
pGlyphProp[i].sva.fClusterStart = 0;
pGlyphProp[i].sva.fDiacritic = 1;
pGlyphProp[i].sva.fZeroWidth = 1;
break;
case ComponentGlyph:
pGlyphProp[i].sva.fClusterStart = 0;
pGlyphProp[i].sva.fDiacritic = 0;
pGlyphProp[i].sva.fZeroWidth = 0;
break;
default:
ERR("Unknown glyph class %i\n",class);
pGlyphProp[i].sva.fClusterStart = 1;
pGlyphProp[i].sva.fDiacritic = 0;
pGlyphProp[i].sva.fZeroWidth = 0;
}
if (char_count == 0)
pGlyphProp[i].sva.fClusterStart = 0;
}
}
static void UpdateClustersFromGlyphProp(const int cGlyphs, const int cChars, WORD* pwLogClust, SCRIPT_GLYPHPROP *pGlyphProp)
{
int i;
for (i = 0; i < cGlyphs; i++)
{
if (!pGlyphProp[i].sva.fClusterStart)
{
int j;
for (j = 0; j < cChars; j++)
{
if (pwLogClust[j] == i)
{
int k = j;
while (!pGlyphProp[pwLogClust[k]].sva.fClusterStart && k >= 0 && k <cChars)
k-=1;
if (pGlyphProp[pwLogClust[k]].sva.fClusterStart)
pwLogClust[j] = pwLogClust[k];
}
}
}
}
}
static void UpdateClusters(int nextIndex, int changeCount, int write_dir, int chars, WORD* pwLogClust )
{
if (changeCount == 0)
return;
else
{
int i;
int target_glyph = nextIndex - write_dir;
int seeking_glyph;
int target_index = -1;
int replacing_glyph = -1;
int changed = 0;
int top_logclust = 0;
if (changeCount > 0)
{
if (write_dir > 0)
target_glyph = nextIndex - changeCount;
else
target_glyph = nextIndex + (changeCount + 1);
}
seeking_glyph = target_glyph;
for (i = 0; i < chars; i++)
if (pwLogClust[i] > top_logclust)
top_logclust = pwLogClust[i];
do {
if (write_dir > 0)
for (i = 0; i < chars; i++)
{
if (pwLogClust[i] == seeking_glyph)
{
target_index = i;
break;
}
}
else
for (i = chars - 1; i >= 0; i--)
{
if (pwLogClust[i] == seeking_glyph)
{
target_index = i;
break;
}
}
if (target_index == -1)
seeking_glyph ++;
}
while (target_index == -1 && seeking_glyph <= top_logclust);
if (target_index == -1)
{
ERR("Unable to find target glyph\n");
return;
}
if (changeCount < 0)
{
/* merge glyphs */
for(i = target_index; i < chars && i >= 0; i+=write_dir)
{
if (pwLogClust[i] == target_glyph)
continue;
if(pwLogClust[i] == replacing_glyph)
pwLogClust[i] = target_glyph;
else
{
changed--;
if (changed >= changeCount)
{
replacing_glyph = pwLogClust[i];
pwLogClust[i] = target_glyph;
}
else
break;
}
}
/* renumber trailing indexes*/
for(i = target_index; i < chars && i >= 0; i+=write_dir)
{
if (pwLogClust[i] != target_glyph)
pwLogClust[i] += changeCount;
}
}
else
{
for(i = target_index; i < chars && i >= 0; i+=write_dir)
pwLogClust[i] += changeCount;
}
}
}
static int apply_GSUB_feature(HDC hdc, SCRIPT_ANALYSIS *psa, ScriptCache* psc, WORD *pwOutGlyphs, int write_dir, INT* pcGlyphs, INT cChars, const char* feat, WORD *pwLogClust )
{
if (psc->GSUB_Table)
{
const GSUB_Feature *feature;
const GSUB_LookupList *lookup;
const GSUB_Header *header = psc->GSUB_Table;
int lookup_index, lookup_count;
feature = load_GSUB_feature(hdc, psa, psc, feat);
if (!feature)
return GSUB_E_NOFEATURE;
TRACE("applying feature %s\n",debugstr_an(feat,4));
lookup = (const GSUB_LookupList*)((const BYTE*)header + GET_BE_WORD(header->LookupList));
lookup_count = GET_BE_WORD(feature->LookupCount);
TRACE("%i lookups\n", lookup_count);
for (lookup_index = 0; lookup_index < lookup_count; lookup_index++)
{
int i;
if (write_dir > 0)
i = 0;
else
i = *pcGlyphs-1;
TRACE("applying lookup (%i/%i)\n",lookup_index,lookup_count);
while(i < *pcGlyphs && i >= 0)
{
INT nextIndex;
INT prevCount = *pcGlyphs;
nextIndex = GSUB_apply_lookup(lookup, GET_BE_WORD(feature->LookupListIndex[lookup_index]), pwOutGlyphs, i, write_dir, pcGlyphs);
if (*pcGlyphs != prevCount)
{
UpdateClusters(nextIndex, *pcGlyphs - prevCount, write_dir, cChars, pwLogClust);
i = nextIndex;
}
else
i+=write_dir;
}
}
return *pcGlyphs;
}
return GSUB_E_NOFEATURE;
}
static inline BOOL get_GSUB_Indic2(SCRIPT_ANALYSIS *psa, ScriptCache *psc)
{
OPENTYPE_TAG tag;
HRESULT hr;
int count = 0;
hr = GSUB_GetFontScriptTags(psc, ShapingData[psa->eScript].newOtTag, 1, &tag, &count, NULL);
return(SUCCEEDED(hr));
}
static WCHAR neighbour_char(int i, int delta, const WCHAR* chars, INT cchLen)
{
if (i + delta < 0)
return 0;
if ( i+ delta >= cchLen)
return 0;
i += delta;
return chars[i];
}
static CHAR neighbour_joining_type(int i, int delta, const CHAR* context_type, INT cchLen, SCRIPT_ANALYSIS *psa)
{
if (i + delta < 0)
{
if (psa->fLinkBefore)
return jtR;
else
return jtU;
}
if ( i+ delta >= cchLen)
{
if (psa->fLinkAfter)
return jtL;
else
return jtU;
}
i += delta;
if (context_type[i] == jtT)
return neighbour_joining_type(i,delta,context_type,cchLen,psa);
else
return context_type[i];
}
static inline BOOL right_join_causing(CHAR joining_type)
{
return (joining_type == jtL || joining_type == jtD || joining_type == jtC);
}
static inline BOOL left_join_causing(CHAR joining_type)
{
return (joining_type == jtR || joining_type == jtD || joining_type == jtC);
}
static inline BOOL word_break_causing(WCHAR chr)
{
/* we are working within a string of characters already guareented to
be within one script, Syriac, so we do not worry about any character
other than the space character outside of that range */
return (chr == 0 || chr == 0x20 );
}
/*
* ContextualShape_Arabic
*/
static void ContextualShape_Arabic(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
{
CHAR *context_type;
INT *context_shape;
INT dirR, dirL;
int i;
if (*pcGlyphs != cChars)
{
ERR("Number of Glyphs and Chars need to match at the beginning\n");
return;
}
if (!psa->fLogicalOrder && psa->fRTL)
{
dirR = 1;
dirL = -1;
}
else
{
dirR = -1;
dirL = 1;
}
if (!psc->GSUB_Table)
psc->GSUB_Table = load_gsub_table(hdc);
context_type = HeapAlloc(GetProcessHeap(),0,cChars);
context_shape = HeapAlloc(GetProcessHeap(),0,sizeof(INT) * cChars);
for (i = 0; i < cChars; i++)
context_type[i] = get_table_entry( wine_shaping_table, pwcChars[i] );
for (i = 0; i < cChars; i++)
{
if (context_type[i] == jtR && right_join_causing(neighbour_joining_type(i,dirR,context_type,cChars,psa)))
context_shape[i] = Xr;
else if (context_type[i] == jtL && left_join_causing(neighbour_joining_type(i,dirL,context_type,cChars,psa)))
context_shape[i] = Xl;
else if (context_type[i] == jtD && left_join_causing(neighbour_joining_type(i,dirL,context_type,cChars,psa)) && right_join_causing(neighbour_joining_type(i,dirR,context_type,cChars,psa)))
context_shape[i] = Xm;
else if (context_type[i] == jtD && right_join_causing(neighbour_joining_type(i,dirR,context_type,cChars,psa)))
context_shape[i] = Xr;
else if (context_type[i] == jtD && left_join_causing(neighbour_joining_type(i,dirL,context_type,cChars,psa)))
context_shape[i] = Xl;
else
context_shape[i] = Xn;
}
/* Contextual Shaping */
i = 0;
while(i < *pcGlyphs)
{
BOOL shaped = FALSE;
if (psc->GSUB_Table)
{
INT nextIndex;
INT prevCount = *pcGlyphs;
nextIndex = apply_GSUB_feature_to_glyph(hdc, psa, psc, pwOutGlyphs, i, dirL, pcGlyphs, contextual_features[context_shape[i]]);
if (nextIndex > GSUB_E_NOGLYPH)
{
i = nextIndex;
UpdateClusters(nextIndex, *pcGlyphs - prevCount, dirL, cChars, pwLogClust);
}
shaped = (nextIndex > GSUB_E_NOGLYPH);
}
if (!shaped)
{
if (context_shape[i] == Xn)
{
WORD newGlyph = pwOutGlyphs[i];
if (pwcChars[i] >= FIRST_ARABIC_CHAR && pwcChars[i] <= LAST_ARABIC_CHAR)
{
/* fall back to presentation form B */
WCHAR context_char = wine_shaping_forms[pwcChars[i] - FIRST_ARABIC_CHAR][context_shape[i]];
if (context_char != pwcChars[i] && GetGlyphIndicesW(hdc, &context_char, 1, &newGlyph, 0) != GDI_ERROR && newGlyph != 0x0000)
pwOutGlyphs[i] = newGlyph;
}
}
i++;
}
}
HeapFree(GetProcessHeap(),0,context_shape);
HeapFree(GetProcessHeap(),0,context_type);
}
/*
* ContextualShape_Syriac
*/
#define ALAPH 0x710
#define DALATH 0x715
#define RISH 0x72A
static void ContextualShape_Syriac(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
{
CHAR *context_type;
INT *context_shape;
INT dirR, dirL;
int i;
if (*pcGlyphs != cChars)
{
ERR("Number of Glyphs and Chars need to match at the beginning\n");
return;
}
if (!psa->fLogicalOrder && psa->fRTL)
{
dirR = 1;
dirL = -1;
}
else
{
dirR = -1;
dirL = 1;
}
if (!psc->GSUB_Table)
psc->GSUB_Table = load_gsub_table(hdc);
if (!psc->GSUB_Table)
return;
context_type = HeapAlloc(GetProcessHeap(),0,cChars);
context_shape = HeapAlloc(GetProcessHeap(),0,sizeof(INT) * cChars);
for (i = 0; i < cChars; i++)
context_type[i] = get_table_entry( wine_shaping_table, pwcChars[i] );
for (i = 0; i < cChars; i++)
{
if (pwcChars[i] == ALAPH)
{
WCHAR rchar = neighbour_char(i,dirR,pwcChars,cChars);
if (left_join_causing(neighbour_joining_type(i,dirR,context_type,cChars,psa)) && word_break_causing(neighbour_char(i,dirL,pwcChars,cChars)))
context_shape[i] = Afj;
else if ( rchar != DALATH && rchar != RISH &&
!left_join_causing(neighbour_joining_type(i,dirR,context_type,cChars,psa)) &&
word_break_causing(neighbour_char(i,dirL,pwcChars,cChars)))
context_shape[i] = Afn;
else if ( (rchar == DALATH || rchar == RISH) && word_break_causing(neighbour_char(i,dirL,pwcChars,cChars)))
context_shape[i] = Afx;
else
context_shape[i] = Xn;
}
else if (context_type[i] == jtR &&
right_join_causing(neighbour_joining_type(i,dirR,context_type,cChars,psa)))
context_shape[i] = Xr;
else if (context_type[i] == jtL && left_join_causing(neighbour_joining_type(i,dirL,context_type,cChars,psa)))
context_shape[i] = Xl;
else if (context_type[i] == jtD && left_join_causing(neighbour_joining_type(i,dirL,context_type,cChars,psa)) && right_join_causing(neighbour_joining_type(i,dirR,context_type,cChars,psa)))
context_shape[i] = Xm;
else if (context_type[i] == jtD && right_join_causing(neighbour_joining_type(i,dirR,context_type,cChars,psa)))
context_shape[i] = Xr;
else if (context_type[i] == jtD && left_join_causing(neighbour_joining_type(i,dirL,context_type,cChars,psa)))
context_shape[i] = Xl;
else
context_shape[i] = Xn;
}
/* Contextual Shaping */
i = 0;
while(i < *pcGlyphs)
{
INT nextIndex;
INT prevCount = *pcGlyphs;
nextIndex = apply_GSUB_feature_to_glyph(hdc, psa, psc, pwOutGlyphs, i, dirL, pcGlyphs, contextual_features[context_shape[i]]);
if (nextIndex > GSUB_E_NOGLYPH)
{
UpdateClusters(nextIndex, *pcGlyphs - prevCount, dirL, cChars, pwLogClust);
i = nextIndex;
}
else
i++;
}
HeapFree(GetProcessHeap(),0,context_shape);
HeapFree(GetProcessHeap(),0,context_type);
}
/*
* ContextualShape_Phags_pa
*/
#define phags_pa_CANDRABINDU 0xA873
#define phags_pa_START 0xA840
#define phags_pa_END 0xA87F
static void ContextualShape_Phags_pa(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
{
INT *context_shape;
INT dirR, dirL;
int i;
if (*pcGlyphs != cChars)
{
ERR("Number of Glyphs and Chars need to match at the beginning\n");
return;
}
if (!psa->fLogicalOrder && psa->fRTL)
{
dirR = 1;
dirL = -1;
}
else
{
dirR = -1;
dirL = 1;
}
if (!psc->GSUB_Table)
psc->GSUB_Table = load_gsub_table(hdc);
if (!psc->GSUB_Table)
return;
context_shape = HeapAlloc(GetProcessHeap(),0,sizeof(INT) * cChars);
for (i = 0; i < cChars; i++)
{
if (pwcChars[i] >= phags_pa_START && pwcChars[i] <= phags_pa_END)
{
WCHAR rchar = neighbour_char(i,dirR,pwcChars,cChars);
WCHAR lchar = neighbour_char(i,dirL,pwcChars,cChars);
BOOL jrchar = (rchar != phags_pa_CANDRABINDU && rchar >= phags_pa_START && rchar <= phags_pa_END);
BOOL jlchar = (lchar != phags_pa_CANDRABINDU && lchar >= phags_pa_START && lchar <= phags_pa_END);
if (jrchar && jlchar)
context_shape[i] = Xm;
else if (jrchar)
context_shape[i] = Xr;
else if (jlchar)
context_shape[i] = Xl;
else
context_shape[i] = Xn;
}
else
context_shape[i] = -1;
}
/* Contextual Shaping */
i = 0;
while(i < *pcGlyphs)
{
if (context_shape[i] >= 0)
{
INT nextIndex;
INT prevCount = *pcGlyphs;
nextIndex = apply_GSUB_feature_to_glyph(hdc, psa, psc, pwOutGlyphs, i, dirL, pcGlyphs, contextual_features[context_shape[i]]);
if (nextIndex > GSUB_E_NOGLYPH)
{
UpdateClusters(nextIndex, *pcGlyphs - prevCount, dirL, cChars, pwLogClust);
i = nextIndex;
}
else
i++;
}
else
i++;
}
HeapFree(GetProcessHeap(),0,context_shape);
}
static void ReplaceInsertChars(HDC hdc, INT cWalk, INT* pcChars, WCHAR *pwOutChars, const WCHAR *replacements)
{
int i;
/* Replace */
pwOutChars[cWalk] = replacements[0];
cWalk=cWalk+1;
/* Insert */
for (i = 1; replacements[i] != 0x0000 && i < 3; i++)
{
int j;
for (j = *pcChars; j > cWalk; j--)
pwOutChars[j] = pwOutChars[j-1];
*pcChars= *pcChars+1;
pwOutChars[cWalk] = replacements[i];
cWalk = cWalk+1;
}
}
static void DecomposeVowels(HDC hdc, WCHAR *pwOutChars, INT *pcChars, const VowelComponents vowels[], WORD* pwLogClust, INT cChars)
{
int i;
int cWalk;
for (cWalk = 0; cWalk < *pcChars; cWalk++)
{
for (i = 0; vowels[i].base != 0x0; i++)
{
if (pwOutChars[cWalk] == vowels[i].base)
{
int o = 0;
ReplaceInsertChars(hdc, cWalk, pcChars, pwOutChars, vowels[i].parts);
if (vowels[i].parts[1]) { cWalk++; o++; }
if (vowels[i].parts[2]) { cWalk++; o++; }
UpdateClusters(cWalk, o, 1, cChars, pwLogClust);
break;
}
}
}
}
static void ComposeConsonants(HDC hdc, WCHAR *pwOutChars, INT *pcChars, const ConsonantComponents consonants[], WORD* pwLogClust)
{
int i;
int offset = 0;
int cWalk;
for (cWalk = 0; cWalk < *pcChars; cWalk++)
{
for (i = 0; consonants[i].output!= 0x0; i++)
{
int j;
for (j = 0; j + cWalk < *pcChars && consonants[i].parts[j]!=0x0; j++)
if (pwOutChars[cWalk+j] != consonants[i].parts[j])
break;
if (consonants[i].parts[j]==0x0) /* matched all */
{
int k;
j--;
pwOutChars[cWalk] = consonants[i].output;
for(k = cWalk+1; k < *pcChars - j; k++)
pwOutChars[k] = pwOutChars[k+j];
*pcChars = *pcChars - j;
for (k = j ; k > 0; k--)
pwLogClust[cWalk + k + offset] = pwLogClust[cWalk + offset];
offset += j;
for (k = cWalk + j + offset; k < *pcChars + offset; k++)
pwLogClust[k]--;
break;
}
}
cWalk++;
}
}
static void Reorder_Ra_follows_base(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
{
if (s->ralf >= 0)
{
int j;
WORD Ra = pwChar[s->start];
WORD H = pwChar[s->start+1];
TRACE("Doing reorder of Ra to %i\n",s->base);
for (j = s->start; j < s->base-1; j++)
pwChar[j] = pwChar[j+2];
pwChar[s->base-1] = Ra;
pwChar[s->base] = H;
s->ralf = s->base-1;
s->base -= 2;
}
}
static void Reorder_Ra_follows_matra(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
{
if (s->ralf >= 0)
{
int j,loc;
int stop = (s->blwf >=0)? s->blwf+1 : s->base;
WORD Ra = pwChar[s->start];
WORD H = pwChar[s->start+1];
for (loc = s->end; loc > stop; loc--)
if (lexical(pwChar[loc]) == lex_Matra_post || lexical(pwChar[loc]) == lex_Matra_below)
break;
TRACE("Doing reorder of Ra to %i\n",loc);
for (j = s->start; j < loc-1; j++)
pwChar[j] = pwChar[j+2];
pwChar[loc-1] = Ra;
pwChar[loc] = H;
s->ralf = loc-1;
s->base -= 2;
if (s->blwf >= 0) s->blwf -= 2;
if (s->pref >= 0) s->pref -= 2;
}
}
static void Reorder_Ra_follows_syllable(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
{
if (s->ralf >= 0)
{
int j;
WORD Ra = pwChar[s->start];
WORD H = pwChar[s->start+1];
TRACE("Doing reorder of Ra to %i\n",s->end-1);
for (j = s->start; j < s->end-1; j++)
pwChar[j] = pwChar[j+2];
pwChar[s->end-1] = Ra;
pwChar[s->end] = H;
s->ralf = s->end-1;
s->base -= 2;
if (s->blwf >= 0) s->blwf -= 2;
if (s->pref >= 0) s->pref -= 2;
}
}
static void Reorder_Matra_precede_base(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
{
int i;
/* reorder Matras */
if (s->end > s->base)
{
for (i = 1; i <= s->end-s->base; i++)
{
if (lexical(pwChar[s->base+i]) == lex_Matra_pre)
{
int j;
WCHAR c = pwChar[s->base+i];
TRACE("Doing reorder of %x %x\n",c,pwChar[s->base]);
for (j = s->base+i; j > s->base; j--)
pwChar[j] = pwChar[j-1];
pwChar[s->base] = c;
if (s->ralf >= s->base) s->ralf++;
if (s->blwf >= s->base) s->blwf++;
if (s->pref >= s->base) s->pref++;
s->base ++;
}
}
}
}
static void Reorder_Matra_precede_syllable(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
{
int i;
/* reorder Matras */
if (s->end > s->base)
{
for (i = 1; i <= s->end-s->base; i++)
{
if (lexical(pwChar[s->base+i]) == lex_Matra_pre)
{
int j;
WCHAR c = pwChar[s->base+i];
TRACE("Doing reorder of %x to %i\n",c,s->start);
for (j = s->base+i; j > s->start; j--)
pwChar[j] = pwChar[j-1];
pwChar[s->start] = c;
if (s->ralf >= 0) s->ralf++;
if (s->blwf >= 0) s->blwf++;
if (s->pref >= 0) s->pref++;
s->base ++;
}
}
}
}
static void SecondReorder_Blwf_follows_matra(LPWSTR pwChar, IndicSyllable *s, WORD *glyphs, IndicSyllable *g, lexical_function lexical)
{
if (s->blwf >= 0 && g->blwf > g->base)
{
int j,loc;
int g_offset;
for (loc = s->end; loc > s->blwf; loc--)
if (lexical(pwChar[loc]) == lex_Matra_below || lexical(pwChar[loc]) == lex_Matra_above || lexical(pwChar[loc]) == lex_Matra_post)
break;
g_offset = (loc - s->blwf) - 1;
if (loc != s->blwf)
{
WORD blwf = glyphs[g->blwf];
TRACE("Doing reorder of Below-base to %i (glyph offset %i)\n",loc,g_offset);
/* do not care about the pwChar array anymore, just the glyphs */
for (j = 0; j < g_offset; j++)
glyphs[g->blwf + j] = glyphs[g->blwf + j + 1];
glyphs[g->blwf + g_offset] = blwf;
}
}
}
static void SecondReorder_Matra_precede_base(LPWSTR pwChar, IndicSyllable *s, WORD *glyphs, IndicSyllable *g, lexical_function lexical)
{
int i;
/* reorder previously moved Matras to correct position*/
for (i = s->start; i < s->base; i++)
{
if (lexical(pwChar[i]) == lex_Matra_pre)
{
int j;
int g_start = g->start + i - s->start;
if (g_start < g->base -1 )
{
WCHAR og = glyphs[g_start];
TRACE("Doing reorder of matra from %i to %i\n",g_start,g->base);
for (j = g_start; j < g->base-1; j++)
glyphs[j] = glyphs[j+1];
glyphs[g->base-1] = og;
}
}
}
}
static void SecondReorder_Pref_precede_base(LPWSTR pwChar, IndicSyllable *s, WORD *glyphs, IndicSyllable *g, lexical_function lexical)
{
if (s->pref >= 0 && g->pref > g->base)
{
int j;
WCHAR og = glyphs[g->pref];
TRACE("Doing reorder of pref from %i to %i\n",g->pref,g->base);
for (j = g->pref; j > g->base; j--)
glyphs[j] = glyphs[j-1];
glyphs[g->base] = og;
}
}
static void Reorder_Like_Sinhala(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
{
TRACE("Syllable (%i..%i..%i)\n",s->start,s->base,s->end);
if (s->start == s->base && s->base == s->end) return;
if (lexical(pwChar[s->base]) == lex_Vowel) return;
Reorder_Ra_follows_base(pwChar, s, lexical);
Reorder_Matra_precede_base(pwChar, s, lexical);
}
static void Reorder_Like_Devanagari(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
{
TRACE("Syllable (%i..%i..%i)\n",s->start,s->base,s->end);
if (s->start == s->base && s->base == s->end) return;
if (lexical(pwChar[s->base]) == lex_Vowel) return;
Reorder_Ra_follows_matra(pwChar, s, lexical);
Reorder_Matra_precede_syllable(pwChar, s, lexical);
}
static void Reorder_Like_Bengali(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
{
TRACE("Syllable (%i..%i..%i)\n",s->start,s->base,s->end);
if (s->start == s->base && s->base == s->end) return;
if (lexical(pwChar[s->base]) == lex_Vowel) return;
Reorder_Ra_follows_base(pwChar, s, lexical);
Reorder_Matra_precede_syllable(pwChar, s, lexical);
}
static void Reorder_Like_Kannada(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
{
TRACE("Syllable (%i..%i..%i)\n",s->start,s->base,s->end);
if (s->start == s->base && s->base == s->end) return;
if (lexical(pwChar[s->base]) == lex_Vowel) return;
Reorder_Ra_follows_syllable(pwChar, s, lexical);
Reorder_Matra_precede_syllable(pwChar, s, lexical);
}
static void SecondReorder_Like_Telugu(LPWSTR pwChar, IndicSyllable *s, WORD* pwGlyphs, IndicSyllable *g, lexical_function lexical)
{
TRACE("Syllable (%i..%i..%i)\n",s->start,s->base,s->end);
TRACE("Glyphs (%i..%i..%i)\n",g->start,g->base,g->end);
if (s->start == s->base && s->base == s->end) return;
if (lexical(pwChar[s->base]) == lex_Vowel) return;
SecondReorder_Blwf_follows_matra(pwChar, s, pwGlyphs, g, lexical);
}
static void SecondReorder_Like_Tamil(LPWSTR pwChar, IndicSyllable *s, WORD* pwGlyphs, IndicSyllable *g, lexical_function lexical)
{
TRACE("Syllable (%i..%i..%i)\n",s->start,s->base,s->end);
TRACE("Glyphs (%i..%i..%i)\n",g->start,g->base,g->end);
if (s->start == s->base && s->base == s->end) return;
if (lexical(pwChar[s->base]) == lex_Vowel) return;
SecondReorder_Matra_precede_base(pwChar, s, pwGlyphs, g, lexical);
SecondReorder_Pref_precede_base(pwChar, s, pwGlyphs, g, lexical);
}
static inline void shift_syllable_glyph_indexs(IndicSyllable *glyph_index, INT index, INT shift)
{
if (shift == 0)
return;
if (glyph_index->start > index)
glyph_index->start += shift;
if (glyph_index->base > index)
glyph_index->base+= shift;
if (glyph_index->end > index)
glyph_index->end+= shift;
if (glyph_index->ralf > index)
glyph_index->ralf+= shift;
if (glyph_index->blwf > index)
glyph_index->blwf+= shift;
if (glyph_index->pref > index)
glyph_index->pref+= shift;
}
static void Apply_Indic_BasicForm(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwChars, INT cChars, IndicSyllable *syllable, WORD *pwOutGlyphs, INT* pcGlyphs, WORD *pwLogClust, lexical_function lexical, IndicSyllable *glyph_index, const GSUB_Feature *feature )
{
int index = glyph_index->start;
if (!feature)
return;
while(index <= glyph_index->end)
{
INT nextIndex;
INT prevCount = *pcGlyphs;
nextIndex = GSUB_apply_feature_all_lookups(psc->GSUB_Table, feature, pwOutGlyphs, index, 1, pcGlyphs);
if (nextIndex > GSUB_E_NOGLYPH)
{
UpdateClusters(nextIndex, *pcGlyphs - prevCount, 1, cChars, pwLogClust);
shift_syllable_glyph_indexs(glyph_index,index,*pcGlyphs - prevCount);
index = nextIndex;
}
else
index++;
}
}
static inline INT find_consonant_halant(WCHAR* pwChars, INT index, INT end, lexical_function lexical)
{
int i = 0;
while (i + index < end - 1 && !(is_consonant(lexical(pwChars[index+i])) && (lexical(pwChars[index+i+1]) == lex_Halant || (index + i < end - 2 && lexical(pwChars[index+i+1]) == lex_Nukta && lexical(pwChars[index+i+2] == lex_Halant)))))
i++;
if (index + i <= end-1)
return index + i;
else
return -1;
}
static void Apply_Indic_PreBase(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwChars, INT cChars, IndicSyllable *syllable, WORD *pwOutGlyphs, INT* pcGlyphs, WORD *pwLogClust, lexical_function lexical, IndicSyllable *glyph_index, const char* feature)
{
INT index, nextIndex;
INT count,g_offset;
count = syllable->base - syllable->start;
g_offset = 0;
index = find_consonant_halant(&pwChars[syllable->start], 0, count, lexical);
while (index >= 0 && index + g_offset < (glyph_index->base - glyph_index->start))
{
INT prevCount = *pcGlyphs;
nextIndex = apply_GSUB_feature_to_glyph(hdc, psa, psc, pwOutGlyphs, index+glyph_index->start+g_offset, 1, pcGlyphs, feature);
if (nextIndex > GSUB_E_NOGLYPH)
{
UpdateClusters(nextIndex, *pcGlyphs - prevCount, 1, cChars, pwLogClust);
shift_syllable_glyph_indexs(glyph_index, index + glyph_index->start + g_offset, (*pcGlyphs - prevCount));
g_offset += (*pcGlyphs - prevCount);
}
index+=2;
index = find_consonant_halant(&pwChars[syllable->start], index, count, lexical);
}
}
static void Apply_Indic_Rphf(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwChars, INT cChars, IndicSyllable *syllable, WORD *pwOutGlyphs, INT* pcGlyphs, WORD *pwLogClust, lexical_function lexical, IndicSyllable *glyph_index)
{
INT nextIndex;
INT prevCount = *pcGlyphs;
if (syllable->ralf >= 0)
{
nextIndex = apply_GSUB_feature_to_glyph(hdc, psa, psc, pwOutGlyphs, glyph_index->ralf, 1, pcGlyphs, "rphf");
if (nextIndex > GSUB_E_NOGLYPH)
{
UpdateClusters(nextIndex, *pcGlyphs - prevCount, 1, cChars, pwLogClust);
shift_syllable_glyph_indexs(glyph_index,glyph_index->ralf,*pcGlyphs - prevCount);
}
}
}
static inline INT find_halant_consonant(WCHAR* pwChars, INT index, INT end, lexical_function lexical)
{
int i = 0;
while (index + i < end-1 && !(lexical(pwChars[index+i]) == lex_Halant &&
((index + i < end-2 && lexical(pwChars[index+i]) == lex_Nukta && is_consonant(lexical(pwChars[index+i+1]))) ||
is_consonant(lexical(pwChars[index+i+1])))))
i++;
if (index + i <= end-1)
return index+i;
else
return -1;
}
static void Apply_Indic_PostBase(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwChars, INT cChars, IndicSyllable *syllable, WORD *pwOutGlyphs, INT* pcGlyphs, WORD *pwLogClust, lexical_function lexical, IndicSyllable *glyph_index, BOOL modern, const char* feat)
{
INT index, nextIndex;
INT count, g_offset=0;
INT ralf = syllable->ralf;
count = syllable->end - syllable->base;
index = find_halant_consonant(&pwChars[syllable->base], 0, count, lexical);
while (index >= 0)
{
INT prevCount = *pcGlyphs;
if (ralf >=0 && ralf < index)
{
g_offset--;
ralf = -1;
}
if (!modern)
{
WORD g = pwOutGlyphs[index+glyph_index->base+g_offset];
pwOutGlyphs[index+glyph_index->base+g_offset] = pwOutGlyphs[index+glyph_index->base+g_offset+1];
pwOutGlyphs[index+glyph_index->base+g_offset+1] = g;
}
nextIndex = apply_GSUB_feature_to_glyph(hdc, psa, psc, pwOutGlyphs, index+glyph_index->base+g_offset, 1, pcGlyphs, feat);
if (nextIndex > GSUB_E_NOGLYPH)
{
UpdateClusters(nextIndex, *pcGlyphs - prevCount, 1, cChars, pwLogClust);
shift_syllable_glyph_indexs(glyph_index,index+glyph_index->start+g_offset, (*pcGlyphs - prevCount));
g_offset += (*pcGlyphs - prevCount);
}
else if (!modern)
{
WORD g = pwOutGlyphs[index+glyph_index->base+g_offset];
pwOutGlyphs[index+glyph_index->base+g_offset] = pwOutGlyphs[index+glyph_index->base+g_offset+1];
pwOutGlyphs[index+glyph_index->base+g_offset+1] = g;
}
index+=2;
index = find_halant_consonant(&pwChars[syllable->base], index, count, lexical);
}
}
static void ShapeIndicSyllables(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwChars, INT cChars, IndicSyllable *syllables, INT syllable_count, WORD *pwOutGlyphs, INT* pcGlyphs, WORD *pwLogClust, lexical_function lexical, second_reorder_function second_reorder, BOOL modern)
{
int c;
int overall_shift = 0;
const GSUB_Feature *locl = (modern)?load_GSUB_feature(hdc, psa, psc, "locl"):NULL;
const GSUB_Feature *nukt = load_GSUB_feature(hdc, psa, psc, "nukt");
const GSUB_Feature *akhn = load_GSUB_feature(hdc, psa, psc, "akhn");
const GSUB_Feature *rkrf = (modern)?load_GSUB_feature(hdc, psa, psc, "rkrf"):NULL;
const GSUB_Feature *pstf = load_GSUB_feature(hdc, psa, psc, "pstf");
const GSUB_Feature *vatu = (!rkrf)?load_GSUB_feature(hdc, psa, psc, "vatu"):NULL;
const GSUB_Feature *cjct = (modern)?load_GSUB_feature(hdc, psa, psc, "cjct"):NULL;
BOOL rphf = (load_GSUB_feature(hdc, psa, psc, "rphf") != NULL);
BOOL pref = (load_GSUB_feature(hdc, psa, psc, "pref") != NULL);
BOOL blwf = (load_GSUB_feature(hdc, psa, psc, "blwf") != NULL);
BOOL half = (load_GSUB_feature(hdc, psa, psc, "half") != NULL);
IndicSyllable glyph_indexs;
for (c = 0; c < syllable_count; c++)
{
int old_end;
memcpy(&glyph_indexs, &syllables[c], sizeof(IndicSyllable));
shift_syllable_glyph_indexs(&glyph_indexs, -1, overall_shift);
old_end = glyph_indexs.end;
if (locl)
{
TRACE("applying feature locl\n");
Apply_Indic_BasicForm(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, locl);
}
if (nukt)
{
TRACE("applying feature nukt\n");
Apply_Indic_BasicForm(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, nukt);
}
if (akhn)
{
TRACE("applying feature akhn\n");
Apply_Indic_BasicForm(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, akhn);
}
if (rphf)
Apply_Indic_Rphf(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs);
if (rkrf)
{
TRACE("applying feature rkrf\n");
Apply_Indic_BasicForm(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, rkrf);
}
if (pref)
Apply_Indic_PostBase(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, modern, "pref");
if (blwf)
{
if (!modern)
Apply_Indic_PreBase(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, "blwf");
Apply_Indic_PostBase(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, modern, "blwf");
}
if (half)
Apply_Indic_PreBase(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, "half");
if (pstf)
{
TRACE("applying feature pstf\n");
Apply_Indic_BasicForm(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, pstf);
}
if (vatu)
{
TRACE("applying feature vatu\n");
Apply_Indic_BasicForm(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, vatu);
}
if (cjct)
{
TRACE("applying feature cjct\n");
Apply_Indic_BasicForm(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, cjct);
}
if (second_reorder)
second_reorder(pwChars, &syllables[c], pwOutGlyphs, &glyph_indexs, lexical);
overall_shift += glyph_indexs.end - old_end;
}
}
static inline int unicode_lex(WCHAR c)
{
int type;
if (!c) return lex_Generic;
if (c == 0x200D) return lex_ZWJ;
if (c == 0x200C) return lex_ZWNJ;
if (c == 0x00A0) return lex_NBSP;
type = get_table_entry( indic_syllabic_table, c );
if ((type & 0x00ff) != 0x0007) type = type & 0x00ff;
switch( type )
{
case 0x0d07: /* Unknown */
case 0x0e07: /* Unknwon */
default: return lex_Generic;
case 0x0001:
case 0x0002:
case 0x0011:
case 0x0012:
case 0x0013:
case 0x0014: return lex_Modifier;
case 0x0003:
case 0x0009:
case 0x000a:
case 0x000b:
case 0x000d:
case 0x000e:
case 0x000f:
case 0x0010: return lex_Consonant;
case 0x0004: return lex_Nukta;
case 0x0005: return lex_Halant;
case 0x0006:
case 0x0008: return lex_Vowel;
case 0x0007:
case 0x0107: return lex_Matra_post;
case 0x0207:
case 0x0307: return lex_Matra_pre;
case 0x0807:
case 0x0907:
case 0x0a07:
case 0x0b07:
case 0x0c07:
case 0x0407: return lex_Composed_Vowel;
case 0x0507: return lex_Matra_above;
case 0x0607: return lex_Matra_below;
case 0x000c: return lex_Ra;
};
}
static int sinhala_lex(WCHAR c)
{
switch (c)
{
case 0x0DDA:
case 0x0DDD:
case 0x0DDC:
case 0x0DDE: return lex_Matra_post;
default:
return unicode_lex(c);
}
}
static const VowelComponents Sinhala_vowels[] = {
{0x0DDA, {0x0DD9,0x0DDA,0x0}},
{0x0DDC, {0x0DD9,0x0DDC,0x0}},
{0x0DDD, {0x0DD9,0x0DDD,0x0}},
{0x0DDE, {0x0DD9,0x0DDE,0x0}},
{0x0000, {0x0000,0x0000,0x0}}};
static void ContextualShape_Sinhala(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
{
int cCount = cChars;
int i;
WCHAR *input;
IndicSyllable *syllables = NULL;
int syllable_count = 0;
if (*pcGlyphs != cChars)
{
ERR("Number of Glyphs and Chars need to match at the beginning\n");
return;
}
input = HeapAlloc(GetProcessHeap(),0,sizeof(WCHAR) * (cChars * 3));
memcpy(input, pwcChars, cChars * sizeof(WCHAR));
/* Step 1: Decompose multi part vowels */
DecomposeVowels(hdc, input, &cCount, Sinhala_vowels, pwLogClust, cChars);
TRACE("New double vowel expanded string %s (%i)\n",debugstr_wn(input,cCount),cCount);
/* Step 2: Reorder within Syllables */
Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, sinhala_lex, Reorder_Like_Sinhala, TRUE);
TRACE("reordered string %s\n",debugstr_wn(input,cCount));
/* Step 3: Strip dangling joiners */
for (i = 0; i < cCount; i++)
{
if ((input[i] == 0x200D || input[i] == 0x200C) &&
(i == 0 || input[i-1] == 0x0020 || i == cCount-1 || input[i+1] == 0x0020))
input[i] = 0x0020;
}
/* Step 4: Base Form application to syllables */
GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
*pcGlyphs = cCount;
ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, sinhala_lex, NULL, TRUE);
HeapFree(GetProcessHeap(),0,input);
HeapFree(GetProcessHeap(),0,syllables);
}
static int devanagari_lex(WCHAR c)
{
switch (c)
{
case 0x0930: return lex_Ra;
default:
return unicode_lex(c);
}
}
static const ConsonantComponents Devanagari_consonants[] ={
{{0x0928, 0x093C, 0x00000}, 0x0929},
{{0x0930, 0x093C, 0x00000}, 0x0931},
{{0x0933, 0x093C, 0x00000}, 0x0934},
{{0x0915, 0x093C, 0x00000}, 0x0958},
{{0x0916, 0x093C, 0x00000}, 0x0959},
{{0x0917, 0x093C, 0x00000}, 0x095A},
{{0x091C, 0x093C, 0x00000}, 0x095B},
{{0x0921, 0x093C, 0x00000}, 0x095C},
{{0x0922, 0x093C, 0x00000}, 0x095D},
{{0x092B, 0x093C, 0x00000}, 0x095E},
{{0x092F, 0x093C, 0x00000}, 0x095F}};
static void ContextualShape_Devanagari(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
{
int cCount = cChars;
WCHAR *input;
IndicSyllable *syllables = NULL;
int syllable_count = 0;
BOOL modern = get_GSUB_Indic2(psa, psc);
if (*pcGlyphs != cChars)
{
ERR("Number of Glyphs and Chars need to match at the beginning\n");
return;
}
input = HeapAlloc(GetProcessHeap(), 0, cChars * sizeof(WCHAR));
memcpy(input, pwcChars, cChars * sizeof(WCHAR));
/* Step 1: Compose Consonant and Nukta */
ComposeConsonants(hdc, input, &cCount, Devanagari_consonants, pwLogClust);
TRACE("New composed string %s (%i)\n",debugstr_wn(input,cCount),cCount);
/* Step 2: Reorder within Syllables */
Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, devanagari_lex, Reorder_Like_Devanagari, modern);
TRACE("reordered string %s\n",debugstr_wn(input,cCount));
GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
*pcGlyphs = cCount;
/* Step 3: Base Form application to syllables */
ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, devanagari_lex, NULL, modern);
HeapFree(GetProcessHeap(),0,input);
HeapFree(GetProcessHeap(),0,syllables);
}
static int bengali_lex(WCHAR c)
{
switch (c)
{
case 0x09B0: return lex_Ra;
default:
return unicode_lex(c);
}
}
static const VowelComponents Bengali_vowels[] = {
{0x09CB, {0x09C7,0x09BE,0x0000}},
{0x09CC, {0x09C7,0x09D7,0x0000}},
{0x0000, {0x0000,0x0000,0x0000}}};
static const ConsonantComponents Bengali_consonants[] = {
{{0x09A4,0x09CD,0x200D}, 0x09CE},
{{0x09A1,0x09BC,0x0000}, 0x09DC},
{{0x09A2,0x09BC,0x0000}, 0x09DD},
{{0x09AF,0x09BC,0x0000}, 0x09DF},
{{0x0000,0x0000,0x0000}, 0x0000}};
static void ContextualShape_Bengali(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
{
int cCount = cChars;
WCHAR *input;
IndicSyllable *syllables = NULL;
int syllable_count = 0;
BOOL modern = get_GSUB_Indic2(psa, psc);
if (*pcGlyphs != cChars)
{
ERR("Number of Glyphs and Chars need to match at the beginning\n");
return;
}
input = HeapAlloc(GetProcessHeap(), 0, (cChars * 2) * sizeof(WCHAR));
memcpy(input, pwcChars, cChars * sizeof(WCHAR));
/* Step 1: Decompose Vowels and Compose Consonents */
DecomposeVowels(hdc, input, &cCount, Bengali_vowels, pwLogClust, cChars);
ComposeConsonants(hdc, input, &cCount, Bengali_consonants, pwLogClust);
TRACE("New composed string %s (%i)\n",debugstr_wn(input,cCount),cCount);
/* Step 2: Reorder within Syllables */
Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, bengali_lex, Reorder_Like_Bengali, modern);
TRACE("reordered string %s\n",debugstr_wn(input,cCount));
GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
*pcGlyphs = cCount;
/* Step 3: Initial form is only applied to the beginning of words */
for (cCount = cCount - 1 ; cCount >= 0; cCount --)
{
if (cCount == 0 || input[cCount] == 0x0020) /* space */
{
int index = cCount;
int gCount = 1;
if (index > 0) index++;
apply_GSUB_feature_to_glyph(hdc, psa, psc, &pwOutGlyphs[index], 0, 1, &gCount, "init");
}
}
/* Step 4: Base Form application to syllables */
ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, bengali_lex, NULL, modern);
HeapFree(GetProcessHeap(),0,input);
HeapFree(GetProcessHeap(),0,syllables);
}
static int gurmukhi_lex(WCHAR c)
{
if (c == 0x0A71)
return lex_Modifier;
else
return unicode_lex(c);
}
static const ConsonantComponents Gurmukhi_consonants[] = {
{{0x0A32,0x0A3C,0x0000}, 0x0A33},
{{0x0A16,0x0A3C,0x0000}, 0x0A59},
{{0x0A17,0x0A3C,0x0000}, 0x0A5A},
{{0x0A1C,0x0A3C,0x0000}, 0x0A5B},
{{0x0A2B,0x0A3C,0x0000}, 0x0A5E},
{{0x0000,0x0000,0x0000}, 0x0000}};
static void ContextualShape_Gurmukhi(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
{
int cCount = cChars;
WCHAR *input;
IndicSyllable *syllables = NULL;
int syllable_count = 0;
BOOL modern = get_GSUB_Indic2(psa, psc);
if (*pcGlyphs != cChars)
{
ERR("Number of Glyphs and Chars need to match at the beginning\n");
return;
}
input = HeapAlloc(GetProcessHeap(), 0, cChars * sizeof(WCHAR));
memcpy(input, pwcChars, cChars * sizeof(WCHAR));
/* Step 1: Compose Consonents */
ComposeConsonants(hdc, input, &cCount, Gurmukhi_consonants, pwLogClust);
TRACE("New composed string %s (%i)\n",debugstr_wn(input,cCount),cCount);
/* Step 2: Reorder within Syllables */
Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, gurmukhi_lex, Reorder_Like_Bengali, modern);
TRACE("reordered string %s\n",debugstr_wn(input,cCount));
GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
*pcGlyphs = cCount;
/* Step 3: Base Form application to syllables */
ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, gurmukhi_lex, NULL, modern);
HeapFree(GetProcessHeap(),0,input);
HeapFree(GetProcessHeap(),0,syllables);
}
static int gujarati_lex(WCHAR c)
{
switch (c)
{
case 0x0AB0: return lex_Ra;
default:
return unicode_lex(c);
}
}
static void ContextualShape_Gujarati(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
{
int cCount = cChars;
WCHAR *input;
IndicSyllable *syllables = NULL;
int syllable_count = 0;
BOOL modern = get_GSUB_Indic2(psa, psc);
if (*pcGlyphs != cChars)
{
ERR("Number of Glyphs and Chars need to match at the beginning\n");
return;
}
input = HeapAlloc(GetProcessHeap(), 0, cChars * sizeof(WCHAR));
memcpy(input, pwcChars, cChars * sizeof(WCHAR));
/* Step 1: Reorder within Syllables */
Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, gujarati_lex, Reorder_Like_Devanagari, modern);
TRACE("reordered string %s\n",debugstr_wn(input,cCount));
GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
*pcGlyphs = cCount;
/* Step 2: Base Form application to syllables */
ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, gujarati_lex, NULL, modern);
HeapFree(GetProcessHeap(),0,input);
HeapFree(GetProcessHeap(),0,syllables);
}
static int oriya_lex(WCHAR c)
{
switch (c)
{
case 0x0B30: return lex_Ra;
default:
return unicode_lex(c);
}
}
static const VowelComponents Oriya_vowels[] = {
{0x0B48, {0x0B47,0x0B56,0x0000}},
{0x0B4B, {0x0B47,0x0B3E,0x0000}},
{0x0B4C, {0x0B47,0x0B57,0x0000}},
{0x0000, {0x0000,0x0000,0x0000}}};
static const ConsonantComponents Oriya_consonants[] = {
{{0x0B21,0x0B3C,0x0000}, 0x0B5C},
{{0x0B22,0x0B3C,0x0000}, 0x0B5D},
{{0x0000,0x0000,0x0000}, 0x0000}};
static void ContextualShape_Oriya(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
{
int cCount = cChars;
WCHAR *input;
IndicSyllable *syllables = NULL;
int syllable_count = 0;
BOOL modern = get_GSUB_Indic2(psa, psc);
if (*pcGlyphs != cChars)
{
ERR("Number of Glyphs and Chars need to match at the beginning\n");
return;
}
input = HeapAlloc(GetProcessHeap(), 0, (cChars*2) * sizeof(WCHAR));
memcpy(input, pwcChars, cChars * sizeof(WCHAR));
/* Step 1: Decompose Vowels and Compose Consonents */
DecomposeVowels(hdc, input, &cCount, Oriya_vowels, pwLogClust, cChars);
ComposeConsonants(hdc, input, &cCount, Oriya_consonants, pwLogClust);
TRACE("New composed string %s (%i)\n",debugstr_wn(input,cCount),cCount);
/* Step 2: Reorder within Syllables */
Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, oriya_lex, Reorder_Like_Bengali, modern);
TRACE("reordered string %s\n",debugstr_wn(input,cCount));
GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
*pcGlyphs = cCount;
/* Step 3: Base Form application to syllables */
ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, oriya_lex, NULL, modern);
HeapFree(GetProcessHeap(),0,input);
HeapFree(GetProcessHeap(),0,syllables);
}
static int tamil_lex(WCHAR c)
{
return unicode_lex(c);
}
static const VowelComponents Tamil_vowels[] = {
{0x0BCA, {0x0BC6,0x0BBE,0x0000}},
{0x0BCB, {0x0BC7,0x0BBE,0x0000}},
{0x0BCB, {0x0BC6,0x0BD7,0x0000}},
{0x0000, {0x0000,0x0000,0x0000}}};
static const ConsonantComponents Tamil_consonants[] = {
{{0x0B92,0x0BD7,0x0000}, 0x0B94},
{{0x0000,0x0000,0x0000}, 0x0000}};
static void ContextualShape_Tamil(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
{
int cCount = cChars;
WCHAR *input;
IndicSyllable *syllables = NULL;
int syllable_count = 0;
BOOL modern = get_GSUB_Indic2(psa, psc);
if (*pcGlyphs != cChars)
{
ERR("Number of Glyphs and Chars need to match at the beginning\n");
return;
}
input = HeapAlloc(GetProcessHeap(), 0, (cChars*2) * sizeof(WCHAR));
memcpy(input, pwcChars, cChars * sizeof(WCHAR));
/* Step 1: Decompose Vowels and Compose Consonents */
DecomposeVowels(hdc, input, &cCount, Tamil_vowels, pwLogClust, cChars);
ComposeConsonants(hdc, input, &cCount, Tamil_consonants, pwLogClust);
TRACE("New composed string %s (%i)\n",debugstr_wn(input,cCount),cCount);
/* Step 2: Reorder within Syllables */
Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, tamil_lex, Reorder_Like_Bengali, modern);
TRACE("reordered string %s\n",debugstr_wn(input,cCount));
GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
*pcGlyphs = cCount;
/* Step 3: Base Form application to syllables */
ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, tamil_lex, SecondReorder_Like_Tamil, modern);
HeapFree(GetProcessHeap(),0,input);
HeapFree(GetProcessHeap(),0,syllables);
}
static int telugu_lex(WCHAR c)
{
switch (c)
{
case 0x0C43:
case 0x0C44: return lex_Modifier;
default:
return unicode_lex(c);
}
}
static const VowelComponents Telugu_vowels[] = {
{0x0C48, {0x0C46,0x0C56,0x0000}},
{0x0000, {0x0000,0x0000,0x0000}}};
static void ContextualShape_Telugu(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
{
int cCount = cChars;
WCHAR *input;
IndicSyllable *syllables = NULL;
int syllable_count = 0;
BOOL modern = get_GSUB_Indic2(psa, psc);
if (*pcGlyphs != cChars)
{
ERR("Number of Glyphs and Chars need to match at the beginning\n");
return;
}
input = HeapAlloc(GetProcessHeap(), 0, (cChars*2) * sizeof(WCHAR));
memcpy(input, pwcChars, cChars * sizeof(WCHAR));
/* Step 1: Decompose Vowels */
DecomposeVowels(hdc, input, &cCount, Telugu_vowels, pwLogClust, cChars);
TRACE("New composed string %s (%i)\n",debugstr_wn(input,cCount),cCount);
/* Step 2: Reorder within Syllables */
Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, telugu_lex, Reorder_Like_Bengali, modern);
TRACE("reordered string %s\n",debugstr_wn(input,cCount));
GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
*pcGlyphs = cCount;
/* Step 3: Base Form application to syllables */
ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, telugu_lex, SecondReorder_Like_Telugu, modern);
HeapFree(GetProcessHeap(),0,input);
HeapFree(GetProcessHeap(),0,syllables);
}
static int kannada_lex(WCHAR c)
{
switch (c)
{
case 0x0CB0: return lex_Ra;
default:
return unicode_lex(c);
}
}
static const VowelComponents Kannada_vowels[] = {
{0x0CC0, {0x0CBF,0x0CD5,0x0000}},
{0x0CC7, {0x0CC6,0x0CD5,0x0000}},
{0x0CC8, {0x0CC6,0x0CD6,0x0000}},
{0x0CCA, {0x0CC6,0x0CC2,0x0000}},
{0x0CCB, {0x0CC6,0x0CC2,0x0CD5}},
{0x0000, {0x0000,0x0000,0x0000}}};
static void ContextualShape_Kannada(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
{
int cCount = cChars;
WCHAR *input;
IndicSyllable *syllables = NULL;
int syllable_count = 0;
BOOL modern = get_GSUB_Indic2(psa, psc);
if (*pcGlyphs != cChars)
{
ERR("Number of Glyphs and Chars need to match at the beginning\n");
return;
}
input = HeapAlloc(GetProcessHeap(), 0, (cChars*3) * sizeof(WCHAR));
memcpy(input, pwcChars, cChars * sizeof(WCHAR));
/* Step 1: Decompose Vowels */
DecomposeVowels(hdc, input, &cCount, Kannada_vowels, pwLogClust, cChars);
TRACE("New composed string %s (%i)\n",debugstr_wn(input,cCount),cCount);
/* Step 2: Reorder within Syllables */
Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, kannada_lex, Reorder_Like_Kannada, modern);
TRACE("reordered string %s\n",debugstr_wn(input,cCount));
GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
*pcGlyphs = cCount;
/* Step 3: Base Form application to syllables */
ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, kannada_lex, SecondReorder_Like_Telugu, modern);
HeapFree(GetProcessHeap(),0,input);
HeapFree(GetProcessHeap(),0,syllables);
}
static int malayalam_lex(WCHAR c)
{
return unicode_lex(c);
}
static const VowelComponents Malayalam_vowels[] = {
{0x0D4A, {0x0D46,0x0D3E,0x0000}},
{0x0D4B, {0x0D47,0x0D3E,0x0000}},
{0x0D4C, {0x0D46,0x0D57,0x0000}},
{0x0000, {0x0000,0x0000,0x0000}}};
static void ContextualShape_Malayalam(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
{
int cCount = cChars;
WCHAR *input;
IndicSyllable *syllables = NULL;
int syllable_count = 0;
BOOL modern = get_GSUB_Indic2(psa, psc);
if (*pcGlyphs != cChars)
{
ERR("Number of Glyphs and Chars need to match at the beginning\n");
return;
}
input = HeapAlloc(GetProcessHeap(), 0, (cChars*2) * sizeof(WCHAR));
memcpy(input, pwcChars, cChars * sizeof(WCHAR));
/* Step 1: Decompose Vowels */
DecomposeVowels(hdc, input, &cCount, Malayalam_vowels, pwLogClust, cChars);
TRACE("New composed string %s (%i)\n",debugstr_wn(input,cCount),cCount);
/* Step 2: Reorder within Syllables */
Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, malayalam_lex, Reorder_Like_Devanagari, modern);
TRACE("reordered string %s\n",debugstr_wn(input,cCount));
GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
*pcGlyphs = cCount;
/* Step 3: Base Form application to syllables */
ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, malayalam_lex, SecondReorder_Like_Tamil, modern);
HeapFree(GetProcessHeap(),0,input);
HeapFree(GetProcessHeap(),0,syllables);
}
static int khmer_lex(WCHAR c)
{
return unicode_lex(c);
}
static void ContextualShape_Khmer(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
{
int cCount = cChars;
WCHAR *input;
IndicSyllable *syllables = NULL;
int syllable_count = 0;
if (*pcGlyphs != cChars)
{
ERR("Number of Glyphs and Chars need to match at the beginning\n");
return;
}
input = HeapAlloc(GetProcessHeap(), 0, cChars * sizeof(WCHAR));
memcpy(input, pwcChars, cChars * sizeof(WCHAR));
/* Step 1: Reorder within Syllables */
Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, khmer_lex, Reorder_Like_Devanagari, FALSE);
TRACE("reordered string %s\n",debugstr_wn(input,cCount));
GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
*pcGlyphs = cCount;
/* Step 2: Base Form application to syllables */
ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, khmer_lex, NULL, FALSE);
HeapFree(GetProcessHeap(),0,input);
HeapFree(GetProcessHeap(),0,syllables);
}
static inline BOOL mongolian_wordbreak(WCHAR chr)
{
return ((chr == 0x0020) || (chr == 0x200C) || (chr == 0x202F) || (chr == 0x180E) || (chr == 0x1800) || (chr == 0x1802) || (chr == 0x1803) || (chr == 0x1805) || (chr == 0x1808) || (chr == 0x1809) || (chr == 0x1807));
}
static void ContextualShape_Mongolian(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
{
INT *context_shape;
INT dirL;
int i;
if (*pcGlyphs != cChars)
{
ERR("Number of Glyphs and Chars need to match at the beginning\n");
return;
}
if (!psa->fLogicalOrder && psa->fRTL)
dirL = -1;
else
dirL = 1;
if (!psc->GSUB_Table)
psc->GSUB_Table = load_gsub_table(hdc);
if (!psc->GSUB_Table)
return;
context_shape = HeapAlloc(GetProcessHeap(),0,sizeof(INT) * cChars);
for (i = 0; i < cChars; i++)
{
if (i == 0 || mongolian_wordbreak(pwcChars[i-1]))
{
if ((i == cChars-1) || mongolian_wordbreak(pwcChars[i+1]))
context_shape[i] = Xn;
else
context_shape[i] = Xl;
}
else
{
if ((i == cChars-1) || mongolian_wordbreak(pwcChars[i+1]))
context_shape[i] = Xr;
else
context_shape[i] = Xm;
}
}
/* Contextual Shaping */
i = 0;
while(i < *pcGlyphs)
{
INT nextIndex;
INT prevCount = *pcGlyphs;
nextIndex = apply_GSUB_feature_to_glyph(hdc, psa, psc, pwOutGlyphs, i, dirL, pcGlyphs, contextual_features[context_shape[i]]);
if (nextIndex > GSUB_E_NOGLYPH)
{
UpdateClusters(nextIndex, *pcGlyphs - prevCount, dirL, cChars, pwLogClust);
i = nextIndex;
}
else
i++;
}
HeapFree(GetProcessHeap(),0,context_shape);
}
static void ShapeCharGlyphProp_Default( HDC hdc, ScriptCache* psc, SCRIPT_ANALYSIS* psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD* pwLogClust, SCRIPT_CHARPROP* pCharProp, SCRIPT_GLYPHPROP* pGlyphProp)
{
int i,k;
for (i = 0; i < cGlyphs; i++)
{
int char_index[20];
int char_count = 0;
for (k = 0; k < cChars; k++)
{
if (pwLogClust[k] == i)
{
char_index[char_count] = k;
char_count++;
}
}
if (char_count == 0)
continue;
if (char_count ==1 && pwcChars[char_index[0]] == 0x0020) /* space */
{
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_BLANK;
pCharProp[char_index[0]].fCanGlyphAlone = 1;
}
else
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_CHARACTER;
}
GDEF_UpdateGlyphProps(hdc, psc, pwGlyphs, cGlyphs, pwLogClust, cChars, pGlyphProp);
UpdateClustersFromGlyphProp(cGlyphs, cChars, pwLogClust, pGlyphProp);
}
static void ShapeCharGlyphProp_Arabic( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp )
{
int i,k;
int initGlyph, finaGlyph;
INT dirR, dirL;
BYTE *spaces;
spaces = HeapAlloc(GetProcessHeap(),0,cGlyphs);
memset(spaces,0,cGlyphs);
if (!psa->fLogicalOrder && psa->fRTL)
{
initGlyph = cGlyphs-1;
finaGlyph = 0;
dirR = 1;
dirL = -1;
}
else
{
initGlyph = 0;
finaGlyph = cGlyphs-1;
dirR = -1;
dirL = 1;
}
for (i = 0; i < cGlyphs; i++)
{
for (k = 0; k < cChars; k++)
if (pwLogClust[k] == i)
{
if (pwcChars[k] == 0x0020)
spaces[i] = 1;
}
}
for (i = 0; i < cGlyphs; i++)
{
int char_index[20];
int char_count = 0;
BOOL isInit, isFinal;
for (k = 0; k < cChars; k++)
{
if (pwLogClust[k] == i)
{
char_index[char_count] = k;
char_count++;
}
}
isInit = (i == initGlyph || (i+dirR > 0 && i+dirR < cGlyphs && spaces[i+dirR]));
isFinal = (i == finaGlyph || (i+dirL > 0 && i+dirL < cGlyphs && spaces[i+dirL]));
if (char_count == 0)
continue;
if (char_count == 1)
{
if (pwcChars[char_index[0]] == 0x0020) /* space */
{
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_BLANK;
pCharProp[char_index[0]].fCanGlyphAlone = 1;
}
else if (pwcChars[char_index[0]] == 0x0640) /* kashida */
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_KASHIDA;
else if (pwcChars[char_index[0]] == 0x0633) /* SEEN */
{
if (!isInit && !isFinal)
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_SEEN_M;
else if (isInit)
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_SEEN;
else
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_NONE;
}
else if (!isInit)
{
if (pwcChars[char_index[0]] == 0x0628 ) /* BA */
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_BA;
else if (pwcChars[char_index[0]] == 0x0631 ) /* RA */
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_RA;
else if (pwcChars[char_index[0]] == 0x0647 ) /* HA */
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_HA;
else if ((pwcChars[char_index[0]] == 0x0627 || pwcChars[char_index[0]] == 0x0625 || pwcChars[char_index[0]] == 0x0623 || pwcChars[char_index[0]] == 0x0622) ) /* alef-like */
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_ALEF;
else
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_NONE;
}
else if (!isInit && !isFinal)
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_NORMAL;
else
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_NONE;
}
else if (char_count == 2)
{
if ((pwcChars[char_index[0]] == 0x0628 && pwcChars[char_index[1]]== 0x0631) || (pwcChars[char_index[0]] == 0x0631 && pwcChars[char_index[1]]== 0x0628)) /* BA+RA */
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_BARA;
else if (!isInit)
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_NORMAL;
else
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_NONE;
}
else if (!isInit && !isFinal)
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_NORMAL;
else
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_NONE;
}
GDEF_UpdateGlyphProps(hdc, psc, pwGlyphs, cGlyphs, pwLogClust, cChars, pGlyphProp);
UpdateClustersFromGlyphProp(cGlyphs, cChars, pwLogClust, pGlyphProp);
HeapFree(GetProcessHeap(),0,spaces);
}
static void ShapeCharGlyphProp_Thai( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp )
{
int i,k;
int finaGlyph;
INT dirL;
BYTE *spaces;
spaces = HeapAlloc(GetProcessHeap(),0,cGlyphs);
memset(spaces,0,cGlyphs);
if (!psa->fLogicalOrder && psa->fRTL)
{
finaGlyph = 0;
dirL = -1;
}
else
{
finaGlyph = cGlyphs-1;
dirL = 1;
}
for (i = 0; i < cGlyphs; i++)
{
for (k = 0; k < cChars; k++)
if (pwLogClust[k] == i)
{
if (pwcChars[k] == 0x0020)
spaces[i] = 1;
}
}
GDEF_UpdateGlyphProps(hdc, psc, pwGlyphs, cGlyphs, pwLogClust, cChars, pGlyphProp);
for (i = 0; i < cGlyphs; i++)
{
int char_index[20];
int char_count = 0;
for (k = 0; k < cChars; k++)
{
if (pwLogClust[k] == i)
{
char_index[char_count] = k;
char_count++;
}
}
if (char_count == 0)
continue;
if (char_count ==1 && pwcChars[char_index[0]] == 0x0020) /* space */
{
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_CHARACTER;
pCharProp[char_index[0]].fCanGlyphAlone = 1;
}
else if (i == finaGlyph)
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_NONE;
else
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_CHARACTER;
/* handle Thai SARA AM (U+0E33) differently than GDEF */
if (char_count == 1 && pwcChars[char_index[0]] == 0x0e33)
pGlyphProp[i].sva.fClusterStart = 0;
}
HeapFree(GetProcessHeap(),0,spaces);
UpdateClustersFromGlyphProp(cGlyphs, cChars, pwLogClust, pGlyphProp);
/* Do not allow justification between marks and their base */
for (i = 0; i < cGlyphs; i++)
{
if (!pGlyphProp[i].sva.fClusterStart)
pGlyphProp[i-dirL].sva.uJustification = SCRIPT_JUSTIFY_NONE;
}
}
static void ShapeCharGlyphProp_None( HDC hdc, ScriptCache* psc, SCRIPT_ANALYSIS* psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD* pwLogClust, SCRIPT_CHARPROP* pCharProp, SCRIPT_GLYPHPROP* pGlyphProp)
{
int i,k;
for (i = 0; i < cGlyphs; i++)
{
int char_index[20];
int char_count = 0;
for (k = 0; k < cChars; k++)
{
if (pwLogClust[k] == i)
{
char_index[char_count] = k;
char_count++;
}
}
if (char_count == 0)
continue;
if (char_count ==1 && pwcChars[char_index[0]] == 0x0020) /* space */
{
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_CHARACTER;
pCharProp[char_index[0]].fCanGlyphAlone = 1;
}
else
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_NONE;
}
GDEF_UpdateGlyphProps(hdc, psc, pwGlyphs, cGlyphs, pwLogClust, cChars, pGlyphProp);
UpdateClustersFromGlyphProp(cGlyphs, cChars, pwLogClust, pGlyphProp);
}
static void ShapeCharGlyphProp_Tibet( HDC hdc, ScriptCache* psc, SCRIPT_ANALYSIS* psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD* pwLogClust, SCRIPT_CHARPROP* pCharProp, SCRIPT_GLYPHPROP* pGlyphProp)
{
int i,k;
for (i = 0; i < cGlyphs; i++)
{
int char_index[20];
int char_count = 0;
for (k = 0; k < cChars; k++)
{
if (pwLogClust[k] == i)
{
char_index[char_count] = k;
char_count++;
}
}
if (char_count == 0)
continue;
if (char_count ==1 && pwcChars[char_index[0]] == 0x0020) /* space */
{
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_BLANK;
pCharProp[char_index[0]].fCanGlyphAlone = 1;
}
else
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_NONE;
}
GDEF_UpdateGlyphProps(hdc, psc, pwGlyphs, cGlyphs, pwLogClust, cChars, pGlyphProp);
UpdateClustersFromGlyphProp(cGlyphs, cChars, pwLogClust, pGlyphProp);
/* Tibeten script does not set sva.fDiacritic or sva.fZeroWidth */
for (i = 0; i < cGlyphs; i++)
{
if (!pGlyphProp[i].sva.fClusterStart)
{
pGlyphProp[i].sva.fDiacritic = 0;
pGlyphProp[i].sva.fZeroWidth = 0;
}
}
}
static void ShapeCharGlyphProp_BaseIndic( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp, lexical_function lexical, BOOL use_syllables, BOOL override_gsub)
{
int i,k;
GDEF_UpdateGlyphProps(hdc, psc, pwGlyphs, cGlyphs, pwLogClust, cChars, pGlyphProp);
for (i = 0; i < cGlyphs; i++)
{
int char_index[20];
int char_count = 0;
for (k = 0; k < cChars; k++)
{
if (pwLogClust[k] == i)
{
char_index[char_count] = k;
char_count++;
}
}
if (override_gsub)
{
/* Most indic scripts do not set fDiacritic or fZeroWidth */
pGlyphProp[i].sva.fDiacritic = FALSE;
pGlyphProp[i].sva.fZeroWidth = FALSE;
}
if (char_count == 0)
continue;
if (char_count ==1 && pwcChars[char_index[0]] == 0x0020) /* space */
{
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_BLANK;
pCharProp[char_index[0]].fCanGlyphAlone = 1;
}
else
pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_NONE;
pGlyphProp[i].sva.fClusterStart = 0;
for (k = 0; k < char_count && !pGlyphProp[i].sva.fClusterStart; k++)
switch (lexical(pwcChars[char_index[k]]))
{
case lex_Matra_pre:
case lex_Matra_post:
case lex_Matra_above:
case lex_Matra_below:
case lex_Modifier:
case lex_Halant:
break;
case lex_ZWJ:
case lex_ZWNJ:
/* check for dangling joiners */
if (pwcChars[char_index[k]-1] == 0x0020 || pwcChars[char_index[k]+1] == 0x0020)
pGlyphProp[i].sva.fClusterStart = 1;
else
k = char_count;
break;
default:
pGlyphProp[i].sva.fClusterStart = 1;
break;
}
}
if (use_syllables)
{
IndicSyllable *syllables = NULL;
int syllable_count = 0;
BOOL modern = get_GSUB_Indic2(psa, psc);
Indic_ParseSyllables( hdc, psa, psc, pwcChars, cChars, &syllables, &syllable_count, lexical, modern);
for (i = 0; i < syllable_count; i++)
{
int j;
WORD g = pwLogClust[syllables[i].start];
for (j = syllables[i].start+1; j <= syllables[i].end; j++)
{
if (pwLogClust[j] != g)
{
pGlyphProp[pwLogClust[j]].sva.fClusterStart = 0;
pwLogClust[j] = g;
}
}
}
HeapFree(GetProcessHeap(), 0, syllables);
}
UpdateClustersFromGlyphProp(cGlyphs, cChars, pwLogClust, pGlyphProp);
}
static void ShapeCharGlyphProp_Sinhala( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp )
{
ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, sinhala_lex, FALSE, FALSE);
}
static void ShapeCharGlyphProp_Devanagari( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp )
{
ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, devanagari_lex, TRUE, TRUE);
}
static void ShapeCharGlyphProp_Bengali( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp )
{
ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, bengali_lex, TRUE, TRUE);
}
static void ShapeCharGlyphProp_Gurmukhi( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp )
{
ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, gurmukhi_lex, TRUE, TRUE);
}
static void ShapeCharGlyphProp_Gujarati( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp )
{
ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, gujarati_lex, TRUE, TRUE);
}
static void ShapeCharGlyphProp_Oriya( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp )
{
ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, oriya_lex, TRUE, TRUE);
}
static void ShapeCharGlyphProp_Tamil( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp )
{
ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, tamil_lex, TRUE, TRUE);
}
static void ShapeCharGlyphProp_Telugu( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp )
{
ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, telugu_lex, TRUE, TRUE);
}
static void ShapeCharGlyphProp_Kannada( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp )
{
ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, kannada_lex, TRUE, TRUE);
}
static void ShapeCharGlyphProp_Malayalam( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp )
{
ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, malayalam_lex, TRUE, TRUE);
}
static void ShapeCharGlyphProp_Khmer( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp )
{
ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, khmer_lex, TRUE, TRUE);
}
void SHAPE_CharGlyphProp(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp)
{
if (ShapingData[psa->eScript].charGlyphPropProc)
ShapingData[psa->eScript].charGlyphPropProc(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp);
else
ShapeCharGlyphProp_Default(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp);
}
void SHAPE_ContextualShaping(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
{
if (!psc->GSUB_Table)
psc->GSUB_Table = load_gsub_table(hdc);
if (ShapingData[psa->eScript].contextProc)
ShapingData[psa->eScript].contextProc(hdc, psc, psa, pwcChars, cChars, pwOutGlyphs, pcGlyphs, cMaxGlyphs, pwLogClust);
}
static void SHAPE_ApplyOpenTypeFeatures(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, INT cChars, const TEXTRANGE_PROPERTIES *rpRangeProperties, WORD *pwLogClust)
{
int i;
INT dirL;
if (!rpRangeProperties)
return;
if (!psc->GSUB_Table)
psc->GSUB_Table = load_gsub_table(hdc);
if (!psc->GSUB_Table)
return;
if (!psa->fLogicalOrder && psa->fRTL)
dirL = -1;
else
dirL = 1;
for (i = 0; i < rpRangeProperties->cotfRecords; i++)
{
if (rpRangeProperties->potfRecords[i].lParameter > 0)
apply_GSUB_feature(hdc, psa, psc, pwOutGlyphs, dirL, pcGlyphs, cChars, (const char*)&rpRangeProperties->potfRecords[i].tagFeature, pwLogClust);
}
}
void SHAPE_ApplyDefaultOpentypeFeatures(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, INT cChars, WORD *pwLogClust)
{
const TEXTRANGE_PROPERTIES *rpRangeProperties;
rpRangeProperties = &ShapingData[psa->eScript].defaultTextRange;
SHAPE_ApplyOpenTypeFeatures(hdc, psc, psa, pwOutGlyphs, pcGlyphs, cMaxGlyphs, cChars, rpRangeProperties, pwLogClust);
}
HRESULT SHAPE_CheckFontForRequiredFeatures(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa)
{
const GSUB_Feature *feature;
int i;
if (!ShapingData[psa->eScript].requiredFeatures)
return S_OK;
if (!psc->GSUB_Table)
psc->GSUB_Table = load_gsub_table(hdc);
/* we need to have at least one of the required features */
i = 0;
while (ShapingData[psa->eScript].requiredFeatures[i])
{
feature = load_GSUB_feature(hdc, psa, psc, ShapingData[psa->eScript].requiredFeatures[i]);
if (feature)
return S_OK;
i++;
}
return USP_E_SCRIPT_NOT_IN_FONT;
}
static VOID *load_CMAP_format12_table(HDC hdc, ScriptCache *psc)
{
CMAP_Header *CMAP_Table = NULL;
int length;
int i;
if (!psc->CMAP_Table)
{
length = GetFontData(hdc, CMAP_TAG , 0, NULL, 0);
if (length != GDI_ERROR)
{
psc->CMAP_Table = HeapAlloc(GetProcessHeap(),0,length);
GetFontData(hdc, CMAP_TAG , 0, psc->CMAP_Table, length);
TRACE("Loaded cmap table of %i bytes\n",length);
}
else
return NULL;
}
CMAP_Table = psc->CMAP_Table;
for (i = 0; i < GET_BE_WORD(CMAP_Table->numTables); i++)
{
if ( (GET_BE_WORD(CMAP_Table->tables[i].platformID) == 3) &&
(GET_BE_WORD(CMAP_Table->tables[i].encodingID) == 10) )
{
CMAP_SegmentedCoverage *format = (CMAP_SegmentedCoverage*)(((BYTE*)CMAP_Table) + GET_BE_DWORD(CMAP_Table->tables[i].offset));
if (GET_BE_WORD(format->format) == 12)
return format;
}
}
return NULL;
}
static int compare_group(const void *a, const void* b)
{
const DWORD *chr = a;
const CMAP_SegmentedCoverage_group *group = b;
if (*chr < GET_BE_DWORD(group->startCharCode))
return -1;
if (*chr > GET_BE_DWORD(group->endCharCode))
return 1;
return 0;
}
DWORD CMAP_GetGlyphIndex(HDC hdc, ScriptCache *psc, DWORD utf32c, LPWORD pgi, DWORD flags)
{
/* BMP: use gdi32 for ease */
if (utf32c < 0x10000)
{
WCHAR ch = utf32c;
return GetGlyphIndicesW(hdc,&ch, 1, pgi, flags);
}
if (!psc->CMAP_format12_Table)
psc->CMAP_format12_Table = load_CMAP_format12_table(hdc, psc);
if (flags & GGI_MARK_NONEXISTING_GLYPHS)
*pgi = 0xffff;
else
*pgi = 0;
if (psc->CMAP_format12_Table)
{
CMAP_SegmentedCoverage *format = NULL;
CMAP_SegmentedCoverage_group *group = NULL;
format = (CMAP_SegmentedCoverage *)psc->CMAP_format12_Table;
group = bsearch(&utf32c, format->groups, GET_BE_DWORD(format->nGroups),
sizeof(CMAP_SegmentedCoverage_group), compare_group);
if (group)
{
DWORD offset = utf32c - GET_BE_DWORD(group->startCharCode);
*pgi = GET_BE_DWORD(group->startGlyphID) + offset;
return 0;
}
}
return 0;
}
static void GSUB_initialize_script_cache(ScriptCache *psc)
{
int i;
if (!psc->script_count)
{
const GSUB_ScriptList *script;
const GSUB_Header* header = (const GSUB_Header*)psc->GSUB_Table;
script = (const GSUB_ScriptList*)((const BYTE*)header + GET_BE_WORD(header->ScriptList));
psc->script_count = GET_BE_WORD(script->ScriptCount);
TRACE("initializing %i scripts in this font\n",psc->script_count);
psc->scripts = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(LoadedScript) * psc->script_count);
for (i = 0; i < psc->script_count; i++)
{
int offset = GET_BE_WORD(script->ScriptRecord[i].Script);
psc->scripts[i].tag = MS_MAKE_TAG(script->ScriptRecord[i].ScriptTag[0], script->ScriptRecord[i].ScriptTag[1], script->ScriptRecord[i].ScriptTag[2], script->ScriptRecord[i].ScriptTag[3]);
psc->scripts[i].table = ((const BYTE*)script + offset);
}
}
}
static HRESULT GSUB_GetFontScriptTags(ScriptCache *psc, OPENTYPE_TAG searchingFor, int cMaxTags, OPENTYPE_TAG *pScriptTags, int *pcTags, LPCVOID* script_table)
{
int i;
HRESULT rc = S_OK;
GSUB_initialize_script_cache(psc);
*pcTags = psc->script_count;
if (!searchingFor && cMaxTags < *pcTags)
rc = E_OUTOFMEMORY;
else if (searchingFor)
rc = USP_E_SCRIPT_NOT_IN_FONT;
for (i = 0; i < psc->script_count; i++)
{
if (i < cMaxTags)
pScriptTags[i] = psc->scripts[i].tag;
if (searchingFor)
{
if (searchingFor == psc->scripts[i].tag)
{
pScriptTags[0] = psc->scripts[i].tag;
*pcTags = 1;
if (script_table)
*script_table = psc->scripts[i].table;
rc = S_OK;
break;
}
}
}
return rc;
}
static void GSUB_initialize_language_cache(LoadedScript *script)
{
int i;
if (!script->language_count)
{
const GSUB_Script* table = script->table;
script->language_count = GET_BE_WORD(table->LangSysCount);
script->default_language.tag = MS_MAKE_TAG('d','f','l','t');
script->default_language.table = (const BYTE*)table + GET_BE_WORD(table->DefaultLangSys);
TRACE("Deflang %p, LangCount %i\n",script->default_language.table, script->language_count);
script->languages = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(LoadedLanguage) * script->language_count);
for (i = 0; i < script->language_count; i++)
{
int offset = GET_BE_WORD(table->LangSysRecord[i].LangSys);
script->languages[i].tag = MS_MAKE_TAG(table->LangSysRecord[i].LangSysTag[0], table->LangSysRecord[i].LangSysTag[1], table->LangSysRecord[i].LangSysTag[2], table->LangSysRecord[i].LangSysTag[3]);
script->languages[i].table = ((const BYTE*)table + offset);
}
}
}
static HRESULT GSUB_GetFontLanguageTags(ScriptCache *psc, OPENTYPE_TAG script_tag, OPENTYPE_TAG searchingFor, int cMaxTags, OPENTYPE_TAG *pLanguageTags, int *pcTags, LPCVOID* language_table)
{
int i;
HRESULT rc = S_OK;
LoadedScript *script = NULL;
GSUB_initialize_script_cache(psc);
for (i = 0; i < psc->script_count; i++)
{
if (psc->scripts[i].tag == script_tag)
{
script = &psc->scripts[i];
break;
}
}
if (!script)
return E_INVALIDARG;
GSUB_initialize_language_cache(script);
if (!searchingFor && cMaxTags < script->language_count)
rc = E_OUTOFMEMORY;
else if (searchingFor)
rc = E_INVALIDARG;
*pcTags = script->language_count;
for (i = 0; i < script->language_count; i++)
{
if (i < cMaxTags)
pLanguageTags[i] = script->languages[i].tag;
if (searchingFor)
{
if (searchingFor == script->languages[i].tag)
{
pLanguageTags[0] = script->languages[i].tag;
*pcTags = 1;
if (language_table)
*language_table = script->languages[i].table;
rc = S_OK;
break;
}
}
}
if (script->default_language.table)
{
if (i < cMaxTags)
pLanguageTags[i] = script->default_language.tag;
if (searchingFor && FAILED(rc))
{
pLanguageTags[0] = script->default_language.tag;
if (language_table)
*language_table = script->default_language.table;
}
i++;
*pcTags = (*pcTags) + 1;
}
return rc;
}
static void GSUB_initialize_feature_cache(LPCVOID table, LoadedLanguage *language)
{
int i;
if (!language->feature_count)
{
const GSUB_LangSys *lang= language->table;
const GSUB_Header *header = (const GSUB_Header *)table;
const GSUB_FeatureList *feature_list;
language->feature_count = GET_BE_WORD(lang->FeatureCount);
TRACE("%i features\n",language->feature_count);
language->features = HeapAlloc(GetProcessHeap(),0,sizeof(LoadedFeature)*language->feature_count);
feature_list = (const GSUB_FeatureList*)((const BYTE*)header + GET_BE_WORD(header->FeatureList));
for (i = 0; i < language->feature_count; i++)
{
int index = GET_BE_WORD(lang->FeatureIndex[i]);
language->features[i].tag = MS_MAKE_TAG(feature_list->FeatureRecord[index].FeatureTag[0], feature_list->FeatureRecord[index].FeatureTag[1], feature_list->FeatureRecord[index].FeatureTag[2], feature_list->FeatureRecord[index].FeatureTag[3]);
language->features[i].feature = ((const BYTE*)feature_list + GET_BE_WORD(feature_list->FeatureRecord[index].Feature));
}
}
}
static HRESULT GSUB_GetFontFeatureTags(ScriptCache *psc, OPENTYPE_TAG script_tag, OPENTYPE_TAG language_tag, BOOL filtered, OPENTYPE_TAG searchingFor, int cMaxTags, OPENTYPE_TAG *pFeatureTags, int *pcTags, LoadedFeature** feature)
{
int i;
HRESULT rc = S_OK;
LoadedScript *script = NULL;
LoadedLanguage *language = NULL;
GSUB_initialize_script_cache(psc);
for (i = 0; i < psc->script_count; i++)
{
if (psc->scripts[i].tag == script_tag)
{
script = &psc->scripts[i];
break;
}
}
if (!script)
{
*pcTags = 0;
if (!filtered)
return S_OK;
else
return E_INVALIDARG;
}
GSUB_initialize_language_cache(script);
if (script->default_language.table && script->default_language.tag == language_tag)
language = &script->default_language;
else
{
for (i = 0; i < script->language_count; i++)
{
if (script->languages[i].tag == language_tag)
{
language = &script->languages[i];
break;
}
}
}
if (!language)
{
*pcTags = 0;
return S_OK;
}
GSUB_initialize_feature_cache(psc->GSUB_Table, language);
*pcTags = language->feature_count;
if (!searchingFor && cMaxTags < *pcTags)
rc = E_OUTOFMEMORY;
else if (searchingFor)
rc = E_INVALIDARG;
for (i = 0; i < language->feature_count; i++)
{
if (i < cMaxTags)
pFeatureTags[i] = language->features[i].tag;
if (searchingFor)
{
if (searchingFor == language->features[i].tag)
{
pFeatureTags[0] = language->features[i].tag;
*pcTags = 1;
if (feature)
*feature = &language->features[i];
rc = S_OK;
break;
}
}
}
return rc;
}
HRESULT SHAPE_GetFontScriptTags( HDC hdc, ScriptCache *psc,
SCRIPT_ANALYSIS *psa, int cMaxTags,
OPENTYPE_TAG *pScriptTags, int *pcTags)
{
HRESULT hr;
OPENTYPE_TAG searching = 0x00000000;
if (!psc->GSUB_Table)
psc->GSUB_Table = load_gsub_table(hdc);
if (psa && scriptInformation[psa->eScript].scriptTag)
searching = scriptInformation[psa->eScript].scriptTag;
hr = GSUB_GetFontScriptTags(psc, searching, cMaxTags, pScriptTags, pcTags, NULL);
if (FAILED(hr))
*pcTags = 0;
return hr;
}
HRESULT SHAPE_GetFontLanguageTags( HDC hdc, ScriptCache *psc,
SCRIPT_ANALYSIS *psa, OPENTYPE_TAG tagScript,
int cMaxTags, OPENTYPE_TAG *pLangSysTags,
int *pcTags)
{
HRESULT hr;
OPENTYPE_TAG searching = 0x00000000;
BOOL fellback = FALSE;
if (!psc->GSUB_Table)
psc->GSUB_Table = load_gsub_table(hdc);
if (psa && psc->userLang != 0)
searching = psc->userLang;
hr = GSUB_GetFontLanguageTags(psc, tagScript, searching, cMaxTags, pLangSysTags, pcTags, NULL);
if (FAILED(hr))
{
fellback = TRUE;
hr = GSUB_GetFontLanguageTags(psc, MS_MAKE_TAG('l','a','t','n'), searching, cMaxTags, pLangSysTags, pcTags, NULL);
}
if (FAILED(hr) || fellback)
*pcTags = 0;
if (SUCCEEDED(hr) && fellback && psa)
hr = E_INVALIDARG;
return hr;
}
HRESULT SHAPE_GetFontFeatureTags( HDC hdc, ScriptCache *psc,
SCRIPT_ANALYSIS *psa, OPENTYPE_TAG tagScript,
OPENTYPE_TAG tagLangSys, int cMaxTags,
OPENTYPE_TAG *pFeatureTags, int *pcTags)
{
HRESULT hr;
BOOL filter = FALSE;
if (!psc->GSUB_Table)
psc->GSUB_Table = load_gsub_table(hdc);
if (psa && scriptInformation[psa->eScript].scriptTag)
{
FIXME("Filtering not implemented\n");
filter = TRUE;
}
hr = GSUB_GetFontFeatureTags(psc, tagScript, tagLangSys, filter, 0x00000000, cMaxTags, pFeatureTags, pcTags, NULL);
if (FAILED(hr))
*pcTags = 0;
return hr;
}
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