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254 lines
10 KiB
C
254 lines
10 KiB
C
/*
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* Implementation of Uniscribe Script Processor (usp10.dll)
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*
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* Copyright 2010 CodeWeavers, Aric Stewart
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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*/
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#define MS_MAKE_TAG( _x1, _x2, _x3, _x4 ) \
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( ( (ULONG)_x4 << 24 ) | \
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( (ULONG)_x3 << 16 ) | \
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( (ULONG)_x2 << 8 ) | \
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(ULONG)_x1 )
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#define Script_Latin 1
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#define Script_CR 2
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#define Script_Numeric 3
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#define Script_Control 4
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#define Script_Punctuation 5
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#define Script_Arabic 6
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#define Script_Arabic_Numeric 7
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#define Script_Hebrew 8
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#define Script_Syriac 9
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#define Script_Persian 10
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#define Script_Thaana 11
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#define Script_Greek 12
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#define Script_Cyrillic 13
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#define Script_Armenian 14
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#define Script_Georgian 15
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/* Unicode Chapter 10 */
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#define Script_Sinhala 16
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#define Script_Tibetan 17
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#define Script_Tibetan_Numeric 18
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#define Script_Phags_pa 19
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/* Unicode Chapter 11 */
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#define Script_Thai 20
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#define Script_Thai_Numeric 21
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#define Script_Lao 22
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#define Script_Lao_Numeric 23
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/* Unicode Chapter 9 */
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#define Script_Devanagari 24
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#define Script_Devanagari_Numeric 25
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#define Script_Bengali 26
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#define Script_Bengali_Numeric 27
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#define Script_Bengali_Currency 28
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#define Script_Gurmukhi 29
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#define Script_Gurmukhi_Numeric 30
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#define Script_Gujarati 31
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#define Script_Gujarati_Numeric 32
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#define Script_Gujarati_Currency 33
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#define Script_Oriya 34
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#define Script_Oriya_Numeric 35
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#define Script_Tamil 36
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#define Script_Tamil_Numeric 37
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#define Script_Telugu 38
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#define Script_Telugu_Numeric 39
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#define Script_Kannada 40
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#define Script_Kannada_Numeric 41
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#define Script_Malayalam 42
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#define Script_Malayalam_Numeric 43
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/* More supplemental */
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#define Script_Diacritical 44
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#define Script_Punctuation2 45
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#define Script_Numeric2 46
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/* Unicode Chapter 11 continued */
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#define Script_Myanmar 47
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#define Script_Myanmar_Numeric 48
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#define Script_Tai_Le 49
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#define Script_New_Tai_Lue 50
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#define Script_New_Tai_Lue_Numeric 51
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#define Script_Khmer 52
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#define Script_Khmer_Numeric 53
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/* Unicode Chapter 12 */
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#define Script_CJK_Han 54
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#define Script_Ideograph 55
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#define Script_Bopomofo 56
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#define Script_Kana 57
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#define Script_Hangul 58
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#define Script_Yi 59
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/* Unicode Chapter 13 */
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#define Script_Ethiopic 60
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#define Script_Ethiopic_Numeric 61
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#define Script_Mongolian 62
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#define Script_Mongolian_Numeric 63
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#define Script_Tifinagh 64
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#define Script_NKo 65
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#define Script_Vai 66
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#define Script_Vai_Numeric 67
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#define Script_Cherokee 68
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#define Script_Canadian 69
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/* Unicode Chapter 14 */
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#define Script_Ogham 70
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#define Script_Runic 71
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/* Unicode Chapter 15 */
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#define Script_Braille 72
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/* Unicode Chapter 16 */
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#define Script_Surrogates 73
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#define Script_Private 74
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/* Unicode Chapter 13 : Plane 1 */
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#define Script_Deseret 75
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#define Script_Osmanya 76
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#define Script_Osmanya_Numeric 77
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/* Unicode Chapter 15 : Plane 1 */
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#define Script_MathAlpha 78
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/* Additional Currency Scripts */
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#define Script_Hebrew_Currency 79
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#define Script_Vietnamese_Currency 80
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#define Script_Thai_Currency 81
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#define GLYPH_BLOCK_SHIFT 8
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#define GLYPH_BLOCK_SIZE (1UL << GLYPH_BLOCK_SHIFT)
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#define GLYPH_BLOCK_MASK (GLYPH_BLOCK_SIZE - 1)
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#define GLYPH_MAX 65536
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#define GSUB_E_NOFEATURE -2
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#define GSUB_E_NOGLYPH -1
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#define FEATURE_ALL_TABLES 0
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#define FEATURE_GSUB_TABLE 1
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#define FEATURE_GPOS_TABLE 2
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typedef struct {
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OPENTYPE_TAG tag;
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CHAR tableType;
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LPCVOID feature;
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INT lookup_count;
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WORD *lookups;
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} LoadedFeature;
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typedef struct {
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OPENTYPE_TAG tag;
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LPCVOID gsub_table;
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LPCVOID gpos_table;
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BOOL features_initialized;
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INT feature_count;
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LoadedFeature *features;
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} LoadedLanguage;
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typedef struct {
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OPENTYPE_TAG tag;
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LPCVOID gsub_table;
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LPCVOID gpos_table;
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LoadedLanguage default_language;
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BOOL languages_initialized;
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INT language_count;
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LoadedLanguage *languages;
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} LoadedScript;
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typedef struct {
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WORD *glyphs[GLYPH_MAX / GLYPH_BLOCK_SIZE];
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} CacheGlyphPage;
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typedef struct {
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LOGFONTW lf;
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TEXTMETRICW tm;
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OUTLINETEXTMETRICW *otm;
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SCRIPT_FONTPROPERTIES sfp;
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BOOL sfnt;
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CacheGlyphPage *page[0x10];
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ABC *widths[GLYPH_MAX / GLYPH_BLOCK_SIZE];
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LPVOID GSUB_Table;
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LPVOID GDEF_Table;
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LPVOID CMAP_Table;
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LPVOID CMAP_format12_Table;
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LPVOID GPOS_Table;
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BOOL scripts_initialized;
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INT script_count;
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LoadedScript *scripts;
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OPENTYPE_TAG userScript;
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OPENTYPE_TAG userLang;
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} ScriptCache;
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typedef struct _scriptData
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{
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SCRIPT_ANALYSIS a;
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SCRIPT_PROPERTIES props;
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OPENTYPE_TAG scriptTag;
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WCHAR fallbackFont[LF_FACESIZE];
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} scriptData;
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typedef struct {
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INT start;
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INT base;
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INT ralf;
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INT blwf;
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INT pref;
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INT end;
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} IndicSyllable;
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enum {lex_Halant, lex_Composed_Vowel, lex_Matra_post, lex_Matra_pre, lex_Matra_above, lex_Matra_below, lex_ZWJ, lex_ZWNJ, lex_NBSP, lex_Modifier, lex_Vowel, lex_Consonant, lex_Generic, lex_Ra, lex_Vedic, lex_Anudatta, lex_Nukta};
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static inline BOOL is_consonant( int type )
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{
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return (type == lex_Ra || type == lex_Consonant);
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}
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static inline WCHAR get_table_entry( const unsigned short *table, WCHAR ch )
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{
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return table[table[table[ch >> 8] + ((ch >> 4) & 0x0f)] + (ch & 0xf)];
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}
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typedef int (*lexical_function)(WCHAR c);
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typedef void (*reorder_function)(LPWSTR pwChar, IndicSyllable *syllable, lexical_function lex);
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#define odd(x) ((x) & 1)
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#define BIDI_STRONG 1
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#define BIDI_WEAK 2
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#define BIDI_NEUTRAL 0
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int USP10_FindGlyphInLogClust(const WORD* pwLogClust, int cChars, WORD target) DECLSPEC_HIDDEN;
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BOOL BIDI_DetermineLevels( LPCWSTR lpString, INT uCount, const SCRIPT_STATE *s,
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const SCRIPT_CONTROL *c, WORD *lpOutLevels ) DECLSPEC_HIDDEN;
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BOOL BIDI_GetStrengths(LPCWSTR lpString, INT uCount, const SCRIPT_CONTROL *c,
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WORD* lpStrength) DECLSPEC_HIDDEN;
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INT BIDI_ReorderV2lLevel(int level, int *pIndexs, const BYTE* plevel, int cch, BOOL fReverse) DECLSPEC_HIDDEN;
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INT BIDI_ReorderL2vLevel(int level, int *pIndexs, const BYTE* plevel, int cch, BOOL fReverse) DECLSPEC_HIDDEN;
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void SHAPE_ContextualShaping(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust) DECLSPEC_HIDDEN;
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void SHAPE_ApplyDefaultOpentypeFeatures(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, INT cChars, WORD *pwLogClust) DECLSPEC_HIDDEN;
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void SHAPE_ApplyOpenTypePositions(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WORD* pwGlyphs, INT cGlyphs, int *piAdvance, GOFFSET *pGoffset ) DECLSPEC_HIDDEN;
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HRESULT SHAPE_CheckFontForRequiredFeatures(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa) DECLSPEC_HIDDEN;
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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) DECLSPEC_HIDDEN;
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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) DECLSPEC_HIDDEN;
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HRESULT SHAPE_GetFontScriptTags( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, int cMaxTags, OPENTYPE_TAG *pScriptTags, int *pcTags) DECLSPEC_HIDDEN;
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HRESULT SHAPE_GetFontLanguageTags( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, OPENTYPE_TAG tagScript, int cMaxTags, OPENTYPE_TAG *pLangSysTags, int *pcTags) DECLSPEC_HIDDEN;
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HRESULT SHAPE_GetFontFeatureTags( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, OPENTYPE_TAG tagScript, OPENTYPE_TAG tagLangSys, int cMaxTags, OPENTYPE_TAG *pFeatureTags, int *pcTags) DECLSPEC_HIDDEN;
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void Indic_ReorderCharacters( HDC hdc, SCRIPT_ANALYSIS *psa, ScriptCache* psc, LPWSTR input, int cChars, IndicSyllable **syllables, int *syllable_count, lexical_function lexical_f, reorder_function reorder_f, BOOL modern) DECLSPEC_HIDDEN;
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void Indic_ParseSyllables( HDC hdc, SCRIPT_ANALYSIS *psa, ScriptCache* psc, LPCWSTR input, const int cChar, IndicSyllable **syllables, int *syllable_count, lexical_function lex, BOOL modern) DECLSPEC_HIDDEN;
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void BREAK_line(const WCHAR *chars, int count, const SCRIPT_ANALYSIS *sa, SCRIPT_LOGATTR *la) DECLSPEC_HIDDEN;
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DWORD OpenType_CMAP_GetGlyphIndex(HDC hdc, ScriptCache *psc, DWORD utf32c, LPWORD pgi, DWORD flags) DECLSPEC_HIDDEN;
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void OpenType_GDEF_UpdateGlyphProps(ScriptCache *psc, const WORD *pwGlyphs, const WORD cGlyphs, WORD* pwLogClust, const WORD cChars, SCRIPT_GLYPHPROP *pGlyphProp) DECLSPEC_HIDDEN;
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INT OpenType_apply_GSUB_lookup(LPCVOID table, INT lookup_index, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count) DECLSPEC_HIDDEN;
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INT OpenType_apply_GPOS_lookup(ScriptCache *psc, LPOUTLINETEXTMETRICW lpotm, LPLOGFONTW lplogfont, const SCRIPT_ANALYSIS *analysis, INT* piAdvance, INT lookup_index, const WORD *glyphs, INT glyph_index, INT glyph_count, GOFFSET *pGoffset) DECLSPEC_HIDDEN;
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HRESULT OpenType_GetFontScriptTags(ScriptCache *psc, OPENTYPE_TAG searchingFor, int cMaxTags, OPENTYPE_TAG *pScriptTags, int *pcTags) DECLSPEC_HIDDEN;
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HRESULT OpenType_GetFontLanguageTags(ScriptCache *psc, OPENTYPE_TAG script_tag, OPENTYPE_TAG searchingFor, int cMaxTags, OPENTYPE_TAG *pLanguageTags, int *pcTags) DECLSPEC_HIDDEN;
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HRESULT OpenType_GetFontFeatureTags(ScriptCache *psc, OPENTYPE_TAG script_tag, OPENTYPE_TAG language_tag, BOOL filtered, OPENTYPE_TAG searchingFor, char tableType, int cMaxTags, OPENTYPE_TAG *pFeatureTags, int *pcTags, LoadedFeature** feature) DECLSPEC_HIDDEN;
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