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ddraw: Use unsafe_impl_from_IDirect3DViewport2 for application provided interfaces.
[wine/multimedia.git] / dlls / usp10 / shape.c
blob499829fe2515978b8e09331e8f29fd3a08b22446
1 /*
2 * Implementation of Shaping for the Uniscribe Script Processor (usp10.dll)
3 *
4 * Copyright 2010 CodeWeavers, Aric Stewart
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 *
20 */
21 #include <stdarg.h>
22
23 #include "windef.h"
24 #include "winbase.h"
25 #include "wingdi.h"
26 #include "winuser.h"
27 #include "winnls.h"
28 #include "usp10.h"
29 #include "winternl.h"
30
31 #include "usp10_internal.h"
32
33 #include "wine/debug.h"
34
35 WINE_DEFAULT_DEBUG_CHANNEL(uniscribe);
36
37 #define FIRST_ARABIC_CHAR 0x0600
38 #define LAST_ARABIC_CHAR 0x06ff
39
40 typedef VOID (*ContextualShapingProc)(HDC, ScriptCache*, SCRIPT_ANALYSIS*,
41 WCHAR*, INT, WORD*, INT*, INT, WORD*);
42
43 static void ContextualShape_Arabic(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
44 static void ContextualShape_Syriac(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
45 static void ContextualShape_Phags_pa(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
46 static void ContextualShape_Sinhala(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
47 static void ContextualShape_Devanagari(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
48 static void ContextualShape_Bengali(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
49 static void ContextualShape_Gurmukhi(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
50 static void ContextualShape_Gujarati(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
51 static void ContextualShape_Oriya(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
52 static void ContextualShape_Tamil(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
53 static void ContextualShape_Telugu(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
54 static void ContextualShape_Kannada(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
55 static void ContextualShape_Malayalam(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
56
57 typedef VOID (*ShapeCharGlyphPropProc)( HDC , ScriptCache*, SCRIPT_ANALYSIS*, const WCHAR*, const INT, const WORD*, const INT, WORD*, SCRIPT_CHARPROP*, SCRIPT_GLYPHPROP*);
58
59 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);
60 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 );
61 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 );
62 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 );
63 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 );
64 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 );
65 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 );
66 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 );
67 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 );
68 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 );
69 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 );
70 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 );
71 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 );
72 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 );
73
74 extern const unsigned short indic_syllabic_table[];
75 extern const unsigned short wine_shaping_table[];
76 extern const unsigned short wine_shaping_forms[LAST_ARABIC_CHAR - FIRST_ARABIC_CHAR + 1][4];
77
78 enum joining_types {
79 jtU,
80 jtT,
81 jtR,
82 jtL,
83 jtD,
84 jtC
85 };
86
87 enum joined_forms {
88 Xn=0,
89 Xr,
90 Xl,
91 Xm,
92 /* Syriac Alaph */
93 Afj,
94 Afn,
95 Afx
96 };
97
98 #ifdef WORDS_BIGENDIAN
99 #define GET_BE_WORD(x) (x)
100 #else
101 #define GET_BE_WORD(x) RtlUshortByteSwap(x)
102 #endif
103
104 /* These are all structures needed for the GSUB table */
105 #define GSUB_TAG MS_MAKE_TAG('G', 'S', 'U', 'B')
106 #define GSUB_E_NOFEATURE -2
107 #define GSUB_E_NOGLYPH -1
108
109 typedef struct {
110 DWORD version;
111 WORD ScriptList;
112 WORD FeatureList;
113 WORD LookupList;
114 } GSUB_Header;
115
116 typedef struct {
117 CHAR ScriptTag[4];
118 WORD Script;
119 } GSUB_ScriptRecord;
120
121 typedef struct {
122 WORD ScriptCount;
123 GSUB_ScriptRecord ScriptRecord[1];
124 } GSUB_ScriptList;
125
126 typedef struct {
127 CHAR LangSysTag[4];
128 WORD LangSys;
129 } GSUB_LangSysRecord;
130
131 typedef struct {
132 WORD DefaultLangSys;
133 WORD LangSysCount;
134 GSUB_LangSysRecord LangSysRecord[1];
135 } GSUB_Script;
136
137 typedef struct {
138 WORD LookupOrder; /* Reserved */
139 WORD ReqFeatureIndex;
140 WORD FeatureCount;
141 WORD FeatureIndex[1];
142 } GSUB_LangSys;
143
144 typedef struct {
145 CHAR FeatureTag[4];
146 WORD Feature;
147 } GSUB_FeatureRecord;
148
149 typedef struct {
150 WORD FeatureCount;
151 GSUB_FeatureRecord FeatureRecord[1];
152 } GSUB_FeatureList;
153
154 typedef struct {
155 WORD FeatureParams; /* Reserved */
156 WORD LookupCount;
157 WORD LookupListIndex[1];
158 } GSUB_Feature;
159
160 typedef struct {
161 WORD LookupCount;
162 WORD Lookup[1];
163 } GSUB_LookupList;
164
165 typedef struct {
166 WORD LookupType;
167 WORD LookupFlag;
168 WORD SubTableCount;
169 WORD SubTable[1];
170 } GSUB_LookupTable;
171
172 typedef struct {
173 WORD CoverageFormat;
174 WORD GlyphCount;
175 WORD GlyphArray[1];
176 } GSUB_CoverageFormat1;
177
178 typedef struct {
179 WORD Start;
180 WORD End;
181 WORD StartCoverageIndex;
182 } GSUB_RangeRecord;
183
184 typedef struct {
185 WORD CoverageFormat;
186 WORD RangeCount;
187 GSUB_RangeRecord RangeRecord[1];
188 } GSUB_CoverageFormat2;
189
190 typedef struct {
191 WORD SubstFormat; /* = 1 */
192 WORD Coverage;
193 WORD DeltaGlyphID;
194 } GSUB_SingleSubstFormat1;
195
196 typedef struct {
197 WORD SubstFormat; /* = 2 */
198 WORD Coverage;
199 WORD GlyphCount;
200 WORD Substitute[1];
201 }GSUB_SingleSubstFormat2;
202
203 typedef struct {
204 WORD SubstFormat; /* = 1 */
205 WORD Coverage;
206 WORD SequenceCount;
207 WORD Sequence[1];
208 }GSUB_MultipleSubstFormat1;
209
210 typedef struct {
211 WORD GlyphCount;
212 WORD Substitute[1];
213 }GSUB_Sequence;
214
215 typedef struct {
216 WORD SubstFormat; /* = 1 */
217 WORD Coverage;
218 WORD LigSetCount;
219 WORD LigatureSet[1];
220 }GSUB_LigatureSubstFormat1;
221
222 typedef struct {
223 WORD LigatureCount;
224 WORD Ligature[1];
225 }GSUB_LigatureSet;
226
227 typedef struct{
228 WORD LigGlyph;
229 WORD CompCount;
230 WORD Component[1];
231 }GSUB_Ligature;
232
233 typedef struct{
234 WORD SequenceIndex;
235 WORD LookupListIndex;
236
237 }GSUB_SubstLookupRecord;
238
239 typedef struct{
240 WORD SubstFormat; /* = 1 */
241 WORD Coverage;
242 WORD ChainSubRuleSetCount;
243 WORD ChainSubRuleSet[1];
244 }GSUB_ChainContextSubstFormat1;
245
246 typedef struct {
247 WORD SubstFormat; /* = 3 */
248 WORD BacktrackGlyphCount;
249 WORD Coverage[1];
250 }GSUB_ChainContextSubstFormat3_1;
251
252 typedef struct{
253 WORD InputGlyphCount;
254 WORD Coverage[1];
255 }GSUB_ChainContextSubstFormat3_2;
256
257 typedef struct{
258 WORD LookaheadGlyphCount;
259 WORD Coverage[1];
260 }GSUB_ChainContextSubstFormat3_3;
261
262 typedef struct{
263 WORD SubstCount;
264 GSUB_SubstLookupRecord SubstLookupRecord[1];
265 }GSUB_ChainContextSubstFormat3_4;
266
267 typedef struct {
268 WORD SubstFormat; /* = 1 */
269 WORD Coverage;
270 WORD AlternateSetCount;
271 WORD AlternateSet[1];
272 } GSUB_AlternateSubstFormat1;
273
274 typedef struct{
275 WORD GlyphCount;
276 WORD Alternate[1];
277 } GSUB_AlternateSet;
278
279 /* These are all structures needed for the GDEF table */
280 #define GDEF_TAG MS_MAKE_TAG('G', 'D', 'E', 'F')
281
282 enum {BaseGlyph=1, LigatureGlyph, MarkGlyph, ComponentGlyph};
283
284 typedef struct {
285 DWORD Version;
286 WORD GlyphClassDef;
287 WORD AttachList;
288 WORD LigCaretList;
289 WORD MarkAttachClassDef;
290 } GDEF_Header;
291
292 typedef struct {
293 WORD ClassFormat;
294 WORD StartGlyph;
295 WORD GlyphCount;
296 WORD ClassValueArray[1];
297 } GDEF_ClassDefFormat1;
298
299 typedef struct {
300 WORD Start;
301 WORD End;
302 WORD Class;
303 } GDEF_ClassRangeRecord;
304
305 typedef struct {
306 WORD ClassFormat;
307 WORD ClassRangeCount;
308 GDEF_ClassRangeRecord ClassRangeRecord[1];
309 } GDEF_ClassDefFormat2;
310
311 static INT GSUB_apply_lookup(const GSUB_LookupList* lookup, INT lookup_index, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count);
312
313 typedef struct tagVowelComponents
314 {
315 WCHAR base;
316 WCHAR parts[3];
317 } VowelComponents;
318
319 typedef struct tagConsonantComponents
320 {
321 WCHAR parts[3];
322 WCHAR output;
323 } ConsonantComponents;
324
325 typedef void (*second_reorder_function)(LPWSTR pwChar, IndicSyllable *syllable,WORD* pwGlyphs, IndicSyllable* glyph_index, lexical_function lex);
326
327 /* the orders of joined_forms and contextual_features need to line up */
328 static const char* contextual_features[] =
329 {
330 "isol",
331 "fina",
332 "init",
333 "medi",
334 /* Syriac Alaph */
335 "med2",
336 "fin2",
337 "fin3"
338 };
339
340 static OPENTYPE_FEATURE_RECORD standard_features[] =
341 {
342 { MS_MAKE_TAG('l','i','g','a'), 1},
343 { MS_MAKE_TAG('c','l','i','g'), 1},
344 };
345
346 static OPENTYPE_FEATURE_RECORD arabic_features[] =
347 {
348 { MS_MAKE_TAG('r','l','i','g'), 1},
349 { MS_MAKE_TAG('c','a','l','t'), 1},
350 { MS_MAKE_TAG('l','i','g','a'), 1},
351 { MS_MAKE_TAG('d','l','i','g'), 1},
352 { MS_MAKE_TAG('c','s','w','h'), 1},
353 { MS_MAKE_TAG('m','s','e','t'), 1},
354 };
355
356 static const char* required_arabic_features[] =
357 {
358 "fina",
359 "init",
360 "medi",
361 "rlig",
362 NULL
363 };
364
365 static OPENTYPE_FEATURE_RECORD hebrew_features[] =
366 {
367 { MS_MAKE_TAG('d','l','i','g'), 1},
368 };
369
370 static OPENTYPE_FEATURE_RECORD syriac_features[] =
371 {
372 { MS_MAKE_TAG('r','l','i','g'), 1},
373 { MS_MAKE_TAG('c','a','l','t'), 1},
374 { MS_MAKE_TAG('l','i','g','a'), 1},
375 { MS_MAKE_TAG('d','l','i','g'), 1},
376 };
377
378 static const char* required_syriac_features[] =
379 {
380 "fina",
381 "fin2",
382 "fin3",
383 "init",
384 "medi",
385 "med2",
386 "rlig",
387 NULL
388 };
389
390 static OPENTYPE_FEATURE_RECORD sinhala_features[] =
391 {
392 /* Presentation forms */
393 { MS_MAKE_TAG('b','l','w','s'), 1},
394 { MS_MAKE_TAG('a','b','v','s'), 1},
395 { MS_MAKE_TAG('p','s','t','s'), 1},
396 };
397
398 static OPENTYPE_FEATURE_RECORD tibetan_features[] =
399 {
400 { MS_MAKE_TAG('a','b','v','s'), 1},
401 { MS_MAKE_TAG('b','l','w','s'), 1},
402 };
403
404 static OPENTYPE_FEATURE_RECORD thai_features[] =
405 {
406 { MS_MAKE_TAG('c','c','m','p'), 1},
407 };
408
409 static const char* required_lao_features[] =
410 {
411 "ccmp",
412 NULL
413 };
414
415 static const char* required_devanagari_features[] =
416 {
417 "nukt",
418 "akhn",
419 "rphf",
420 "blwf",
421 "half",
422 "vatu",
423 "pres",
424 "abvs",
425 "blws",
426 "psts",
427 "haln",
428 NULL
429 };
430
431 static OPENTYPE_FEATURE_RECORD devanagari_features[] =
432 {
433 { MS_MAKE_TAG('p','r','e','s'), 1},
434 { MS_MAKE_TAG('a','b','v','s'), 1},
435 { MS_MAKE_TAG('b','l','w','s'), 1},
436 { MS_MAKE_TAG('p','s','t','s'), 1},
437 { MS_MAKE_TAG('h','a','l','n'), 1},
438 { MS_MAKE_TAG('c','a','l','t'), 1},
439 };
440
441 static const char* required_bengali_features[] =
442 {
443 "nukt",
444 "akhn",
445 "rphf",
446 "blwf",
447 "half",
448 "vatu",
449 "pstf",
450 "init",
451 "abvs",
452 "blws",
453 "psts",
454 "haln",
455 NULL
456 };
457
458 static const char* required_gurmukhi_features[] =
459 {
460 "nukt",
461 "akhn",
462 "rphf",
463 "blwf",
464 "half",
465 "pstf",
466 "vatu",
467 "cjct",
468 "pres",
469 "abvs",
470 "blws",
471 "psts",
472 "haln",
473 "calt",
474 NULL
475 };
476
477 static const char* required_oriya_features[] =
478 {
479 "nukt",
480 "akhn",
481 "rphf",
482 "blwf",
483 "pstf",
484 "cjct",
485 "pres",
486 "abvs",
487 "blws",
488 "psts",
489 "haln",
490 "calt",
491 NULL
492 };
493
494 static const char* required_tamil_features[] =
495 {
496 "nukt",
497 "akhn",
498 "rphf",
499 "pref",
500 "half",
501 "pres",
502 "abvs",
503 "blws",
504 "psts",
505 "haln",
506 "calt",
507 NULL
508 };
509
510 static const char* required_telugu_features[] =
511 {
512 "nukt",
513 "akhn",
514 "rphf",
515 "pref",
516 "half",
517 "pstf",
518 "cjct",
519 "pres",
520 "abvs",
521 "blws",
522 "psts",
523 "haln",
524 "calt",
525 NULL
526 };
527
528 typedef struct ScriptShapeDataTag {
529 TEXTRANGE_PROPERTIES defaultTextRange;
530 const char** requiredFeatures;
531 CHAR otTag[5];
532 CHAR newOtTag[5];
533 ContextualShapingProc contextProc;
534 ShapeCharGlyphPropProc charGlyphPropProc;
535 } ScriptShapeData;
536
537 /* in order of scripts */
538 static const ScriptShapeData ShapingData[] =
539 {
540 {{ standard_features, 2}, NULL, "", "", NULL, NULL},
541 {{ standard_features, 2}, NULL, "latn", "", NULL, NULL},
542 {{ standard_features, 2}, NULL, "latn", "", NULL, NULL},
543 {{ standard_features, 2}, NULL, "latn", "", NULL, NULL},
544 {{ standard_features, 2}, NULL, "" , "", NULL, NULL},
545 {{ standard_features, 2}, NULL, "latn", "", NULL, NULL},
546 {{ arabic_features, 6}, required_arabic_features, "arab", "", ContextualShape_Arabic, ShapeCharGlyphProp_Arabic},
547 {{ arabic_features, 6}, required_arabic_features, "arab", "", ContextualShape_Arabic, ShapeCharGlyphProp_Arabic},
548 {{ hebrew_features, 1}, NULL, "hebr", "", NULL, NULL},
549 {{ syriac_features, 4}, required_syriac_features, "syrc", "", ContextualShape_Syriac, ShapeCharGlyphProp_None},
550 {{ arabic_features, 6}, required_arabic_features, "arab", "", ContextualShape_Arabic, ShapeCharGlyphProp_Arabic},
551 {{ NULL, 0}, NULL, "thaa", "", NULL, ShapeCharGlyphProp_None},
552 {{ standard_features, 2}, NULL, "grek", "", NULL, NULL},
553 {{ standard_features, 2}, NULL, "cyrl", "", NULL, NULL},
554 {{ standard_features, 2}, NULL, "armn", "", NULL, NULL},
555 {{ standard_features, 2}, NULL, "geor", "", NULL, NULL},
556 {{ sinhala_features, 3}, NULL, "sinh", "", ContextualShape_Sinhala, NULL},
557 {{ tibetan_features, 2}, NULL, "tibt", "", NULL, ShapeCharGlyphProp_Tibet},
558 {{ tibetan_features, 2}, NULL, "tibt", "", NULL, ShapeCharGlyphProp_Tibet},
559 {{ tibetan_features, 2}, NULL, "phag", "", ContextualShape_Phags_pa, ShapeCharGlyphProp_Thai},
560 {{ thai_features, 1}, NULL, "thai", "", NULL, ShapeCharGlyphProp_Thai},
561 {{ thai_features, 1}, NULL, "thai", "", NULL, ShapeCharGlyphProp_Thai},
562 {{ thai_features, 1}, required_lao_features, "lao", "", NULL, ShapeCharGlyphProp_Thai},
563 {{ thai_features, 1}, required_lao_features, "lao", "", NULL, ShapeCharGlyphProp_Thai},
564 {{ devanagari_features, 6}, required_devanagari_features, "deva", "dev2", ContextualShape_Devanagari, ShapeCharGlyphProp_Devanagari},
565 {{ devanagari_features, 6}, required_devanagari_features, "deva", "dev2", ContextualShape_Devanagari, ShapeCharGlyphProp_Devanagari},
566 {{ devanagari_features, 6}, required_bengali_features, "beng", "bng2", ContextualShape_Bengali, ShapeCharGlyphProp_Bengali},
567 {{ devanagari_features, 6}, required_bengali_features, "beng", "bng2", ContextualShape_Bengali, ShapeCharGlyphProp_Bengali},
568 {{ devanagari_features, 6}, required_bengali_features, "beng", "bng2", ContextualShape_Bengali, ShapeCharGlyphProp_Bengali},
569 {{ devanagari_features, 6}, required_gurmukhi_features, "guru", "gur2", ContextualShape_Gurmukhi, ShapeCharGlyphProp_Gurmukhi},
570 {{ devanagari_features, 6}, required_gurmukhi_features, "guru", "gur2", ContextualShape_Gurmukhi, ShapeCharGlyphProp_Gurmukhi},
571 {{ devanagari_features, 6}, required_devanagari_features, "gujr", "gjr2", ContextualShape_Gujarati, ShapeCharGlyphProp_Gujarati},
572 {{ devanagari_features, 6}, required_devanagari_features, "gujr", "gjr2", ContextualShape_Gujarati, ShapeCharGlyphProp_Gujarati},
573 {{ devanagari_features, 6}, required_devanagari_features, "gujr", "gjr2", ContextualShape_Gujarati, ShapeCharGlyphProp_Gujarati},
574 {{ devanagari_features, 6}, required_oriya_features, "orya", "ory2", ContextualShape_Oriya, ShapeCharGlyphProp_Oriya},
575 {{ devanagari_features, 6}, required_oriya_features, "orya", "ory2", ContextualShape_Oriya, ShapeCharGlyphProp_Oriya},
576 {{ devanagari_features, 6}, required_tamil_features, "taml", "tam2", ContextualShape_Tamil, ShapeCharGlyphProp_Tamil},
577 {{ devanagari_features, 6}, required_tamil_features, "taml", "tam2", ContextualShape_Tamil, ShapeCharGlyphProp_Tamil},
578 {{ devanagari_features, 6}, required_telugu_features, "telu", "tel2", ContextualShape_Telugu, ShapeCharGlyphProp_Telugu},
579 {{ devanagari_features, 6}, required_telugu_features, "telu", "tel2", ContextualShape_Telugu, ShapeCharGlyphProp_Telugu},
580 {{ devanagari_features, 6}, required_telugu_features, "knda", "knd2", ContextualShape_Kannada, ShapeCharGlyphProp_Kannada},
581 {{ devanagari_features, 6}, required_telugu_features, "knda", "knd2", ContextualShape_Kannada, ShapeCharGlyphProp_Kannada},
582 {{ devanagari_features, 6}, required_telugu_features, "mlym", "mlm2", ContextualShape_Malayalam, ShapeCharGlyphProp_Malayalam},
583 {{ devanagari_features, 6}, required_telugu_features, "mlym", "mlm2", ContextualShape_Malayalam, ShapeCharGlyphProp_Malayalam},
584 };
585
586 static INT GSUB_is_glyph_covered(LPCVOID table , UINT glyph)
587 {
588 const GSUB_CoverageFormat1* cf1;
589
590 cf1 = table;
591
592 if (GET_BE_WORD(cf1->CoverageFormat) == 1)
593 {
594 int count = GET_BE_WORD(cf1->GlyphCount);
595 int i;
596 TRACE("Coverage Format 1, %i glyphs\n",count);
597 for (i = 0; i < count; i++)
598 if (glyph == GET_BE_WORD(cf1->GlyphArray[i]))
599 return i;
600 return -1;
601 }
602 else if (GET_BE_WORD(cf1->CoverageFormat) == 2)
603 {
604 const GSUB_CoverageFormat2* cf2;
605 int i;
606 int count;
607 cf2 = (const GSUB_CoverageFormat2*)cf1;
608
609 count = GET_BE_WORD(cf2->RangeCount);
610 TRACE("Coverage Format 2, %i ranges\n",count);
611 for (i = 0; i < count; i++)
612 {
613 if (glyph < GET_BE_WORD(cf2->RangeRecord[i].Start))
614 return -1;
615 if ((glyph >= GET_BE_WORD(cf2->RangeRecord[i].Start)) &&
616 (glyph <= GET_BE_WORD(cf2->RangeRecord[i].End)))
617 {
618 return (GET_BE_WORD(cf2->RangeRecord[i].StartCoverageIndex) +
619 glyph - GET_BE_WORD(cf2->RangeRecord[i].Start));
620 }
621 }
622 return -1;
623 }
624 else
625 ERR("Unknown CoverageFormat %i\n",GET_BE_WORD(cf1->CoverageFormat));
626
627 return -1;
628 }
629
630 static const GSUB_Script* GSUB_get_script_table( const GSUB_Header* header, const char* tag)
631 {
632 const GSUB_ScriptList *script;
633 const GSUB_Script *deflt = NULL;
634 int i;
635 script = (const GSUB_ScriptList*)((const BYTE*)header + GET_BE_WORD(header->ScriptList));
636
637 TRACE("%i scripts in this font\n",GET_BE_WORD(script->ScriptCount));
638 for (i = 0; i < GET_BE_WORD(script->ScriptCount); i++)
639 {
640 const GSUB_Script *scr;
641 int offset;
642
643 offset = GET_BE_WORD(script->ScriptRecord[i].Script);
644 scr = (const GSUB_Script*)((const BYTE*)script + offset);
645
646 if (strncmp(script->ScriptRecord[i].ScriptTag, tag,4)==0)
647 return scr;
648 if (strncmp(script->ScriptRecord[i].ScriptTag, "dflt",4)==0)
649 deflt = scr;
650 }
651 return deflt;
652 }
653
654 static const GSUB_LangSys* GSUB_get_lang_table( const GSUB_Script* script, const char* tag)
655 {
656 int i;
657 int offset;
658 const GSUB_LangSys *Lang;
659
660 TRACE("Deflang %x, LangCount %i\n",GET_BE_WORD(script->DefaultLangSys), GET_BE_WORD(script->LangSysCount));
661
662 for (i = 0; i < GET_BE_WORD(script->LangSysCount) ; i++)
663 {
664 offset = GET_BE_WORD(script->LangSysRecord[i].LangSys);
665 Lang = (const GSUB_LangSys*)((const BYTE*)script + offset);
666
667 if ( strncmp(script->LangSysRecord[i].LangSysTag,tag,4)==0)
668 return Lang;
669 }
670 offset = GET_BE_WORD(script->DefaultLangSys);
671 if (offset)
672 {
673 Lang = (const GSUB_LangSys*)((const BYTE*)script + offset);
674 return Lang;
675 }
676 return NULL;
677 }
678
679 static const GSUB_Feature * GSUB_get_feature(const GSUB_Header *header, const GSUB_LangSys *lang, const char* tag)
680 {
681 int i;
682 const GSUB_FeatureList *feature;
683 feature = (const GSUB_FeatureList*)((const BYTE*)header + GET_BE_WORD(header->FeatureList));
684
685 TRACE("%i features\n",GET_BE_WORD(lang->FeatureCount));
686 for (i = 0; i < GET_BE_WORD(lang->FeatureCount); i++)
687 {
688 int index = GET_BE_WORD(lang->FeatureIndex[i]);
689 if (strncmp(feature->FeatureRecord[index].FeatureTag,tag,4)==0)
690 {
691 const GSUB_Feature *feat;
692 feat = (const GSUB_Feature*)((const BYTE*)feature + GET_BE_WORD(feature->FeatureRecord[index].Feature));
693 return feat;
694 }
695 }
696 return NULL;
697 }
698
699 static INT GSUB_apply_SingleSubst(const GSUB_LookupTable *look, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
700 {
701 int j;
702 TRACE("Single Substitution Subtable\n");
703
704 for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
705 {
706 int offset;
707 const GSUB_SingleSubstFormat1 *ssf1;
708 offset = GET_BE_WORD(look->SubTable[j]);
709 ssf1 = (const GSUB_SingleSubstFormat1*)((const BYTE*)look+offset);
710 if (GET_BE_WORD(ssf1->SubstFormat) == 1)
711 {
712 int offset = GET_BE_WORD(ssf1->Coverage);
713 TRACE(" subtype 1, delta %i\n", GET_BE_WORD(ssf1->DeltaGlyphID));
714 if (GSUB_is_glyph_covered((const BYTE*)ssf1+offset, glyphs[glyph_index]) != -1)
715 {
716 TRACE(" Glyph 0x%x ->",glyphs[glyph_index]);
717 glyphs[glyph_index] = glyphs[glyph_index] + GET_BE_WORD(ssf1->DeltaGlyphID);
718 TRACE(" 0x%x\n",glyphs[glyph_index]);
719 return glyph_index + 1;
720 }
721 }
722 else
723 {
724 const GSUB_SingleSubstFormat2 *ssf2;
725 INT index;
726 INT offset;
727
728 ssf2 = (const GSUB_SingleSubstFormat2 *)ssf1;
729 offset = GET_BE_WORD(ssf1->Coverage);
730 TRACE(" subtype 2, glyph count %i\n", GET_BE_WORD(ssf2->GlyphCount));
731 index = GSUB_is_glyph_covered((const BYTE*)ssf2+offset, glyphs[glyph_index]);
732 TRACE(" Coverage index %i\n",index);
733 if (index != -1)
734 {
735 if (glyphs[glyph_index] == GET_BE_WORD(ssf2->Substitute[index]))
736 return GSUB_E_NOGLYPH;
737
738 TRACE(" Glyph is 0x%x ->",glyphs[glyph_index]);
739 glyphs[glyph_index] = GET_BE_WORD(ssf2->Substitute[index]);
740 TRACE("0x%x\n",glyphs[glyph_index]);
741 return glyph_index + 1;
742 }
743 }
744 }
745 return GSUB_E_NOGLYPH;
746 }
747
748 static INT GSUB_apply_MultipleSubst(const GSUB_LookupTable *look, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
749 {
750 int j;
751 TRACE("Multiple Substitution Subtable\n");
752
753 for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
754 {
755 int offset, index;
756 const GSUB_MultipleSubstFormat1 *msf1;
757 offset = GET_BE_WORD(look->SubTable[j]);
758 msf1 = (const GSUB_MultipleSubstFormat1*)((const BYTE*)look+offset);
759
760 offset = GET_BE_WORD(msf1->Coverage);
761 index = GSUB_is_glyph_covered((const BYTE*)msf1+offset, glyphs[glyph_index]);
762 if (index != -1)
763 {
764 const GSUB_Sequence *seq;
765 int sub_count;
766 int j;
767 offset = GET_BE_WORD(msf1->Sequence[index]);
768 seq = (const GSUB_Sequence*)((const BYTE*)msf1+offset);
769 sub_count = GET_BE_WORD(seq->GlyphCount);
770 TRACE(" Glyph 0x%x (+%i)->",glyphs[glyph_index],(sub_count-1));
771
772 for (j = (*glyph_count)+(sub_count-1); j > glyph_index; j--)
773 glyphs[j] =glyphs[j-(sub_count-1)];
774
775 for (j = 0; j < sub_count; j++)
776 if (write_dir < 0)
777 glyphs[glyph_index + (sub_count-1) - j] = GET_BE_WORD(seq->Substitute[j]);
778 else
779 glyphs[glyph_index + j] = GET_BE_WORD(seq->Substitute[j]);
780
781 *glyph_count = *glyph_count + (sub_count - 1);
782
783 if (TRACE_ON(uniscribe))
784 {
785 for (j = 0; j < sub_count; j++)
786 TRACE(" 0x%x",glyphs[glyph_index+j]);
787 TRACE("\n");
788 }
789
790 return glyph_index + sub_count;
791 }
792 }
793 return GSUB_E_NOGLYPH;
794 }
795
796 static INT GSUB_apply_AlternateSubst(const GSUB_LookupTable *look, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
797 {
798 int j;
799 TRACE("Alternate Substitution Subtable\n");
800
801 for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
802 {
803 int offset;
804 const GSUB_AlternateSubstFormat1 *asf1;
805 INT index;
806
807 offset = GET_BE_WORD(look->SubTable[j]);
808 asf1 = (const GSUB_AlternateSubstFormat1*)((const BYTE*)look+offset);
809 offset = GET_BE_WORD(asf1->Coverage);
810
811 index = GSUB_is_glyph_covered((const BYTE*)asf1+offset, glyphs[glyph_index]);
812 if (index != -1)
813 {
814 const GSUB_AlternateSet *as;
815 offset = GET_BE_WORD(asf1->AlternateSet[index]);
816 as = (const GSUB_AlternateSet*)((const BYTE*)asf1+offset);
817 FIXME("%i alternates, picking index 0\n",GET_BE_WORD(as->GlyphCount));
818 if (glyphs[glyph_index] == GET_BE_WORD(as->Alternate[0]))
819 return GSUB_E_NOGLYPH;
820
821 TRACE(" Glyph 0x%x ->",glyphs[glyph_index]);
822 glyphs[glyph_index] = GET_BE_WORD(as->Alternate[0]);
823 TRACE(" 0x%x\n",glyphs[glyph_index]);
824 return glyph_index + 1;
825 }
826 }
827 return GSUB_E_NOGLYPH;
828 }
829
830 static INT GSUB_apply_LigatureSubst(const GSUB_LookupTable *look, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
831 {
832 int j;
833
834 TRACE("Ligature Substitution Subtable\n");
835 for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
836 {
837 const GSUB_LigatureSubstFormat1 *lsf1;
838 int offset,index;
839
840 offset = GET_BE_WORD(look->SubTable[j]);
841 lsf1 = (const GSUB_LigatureSubstFormat1*)((const BYTE*)look+offset);
842 offset = GET_BE_WORD(lsf1->Coverage);
843 index = GSUB_is_glyph_covered((const BYTE*)lsf1+offset, glyphs[glyph_index]);
844 TRACE(" Coverage index %i\n",index);
845 if (index != -1)
846 {
847 const GSUB_LigatureSet *ls;
848 int k, count;
849
850 offset = GET_BE_WORD(lsf1->LigatureSet[index]);
851 ls = (const GSUB_LigatureSet*)((const BYTE*)lsf1+offset);
852 count = GET_BE_WORD(ls->LigatureCount);
853 TRACE(" LigatureSet has %i members\n",count);
854 for (k = 0; k < count; k++)
855 {
856 const GSUB_Ligature *lig;
857 int CompCount,l,CompIndex;
858
859 offset = GET_BE_WORD(ls->Ligature[k]);
860 lig = (const GSUB_Ligature*)((const BYTE*)ls+offset);
861 CompCount = GET_BE_WORD(lig->CompCount) - 1;
862 CompIndex = glyph_index+write_dir;
863 for (l = 0; l < CompCount && CompIndex >= 0 && CompIndex < *glyph_count; l++)
864 {
865 int CompGlyph;
866 CompGlyph = GET_BE_WORD(lig->Component[l]);
867 if (CompGlyph != glyphs[CompIndex])
868 break;
869 CompIndex += write_dir;
870 }
871 if (l == CompCount)
872 {
873 int replaceIdx = glyph_index;
874 if (write_dir < 0)
875 replaceIdx = glyph_index - CompCount;
876
877 TRACE(" Glyph is 0x%x (+%i) ->",glyphs[glyph_index],CompCount);
878 glyphs[replaceIdx] = GET_BE_WORD(lig->LigGlyph);
879 TRACE("0x%x\n",glyphs[replaceIdx]);
880 if (CompCount > 0)
881 {
882 int j;
883 for (j = replaceIdx + 1; j < *glyph_count; j++)
884 glyphs[j] =glyphs[j+CompCount];
885 *glyph_count = *glyph_count - CompCount;
886 }
887 return replaceIdx + 1;
888 }
889 }
890 }
891 }
892 return GSUB_E_NOGLYPH;
893 }
894
895 static INT GSUB_apply_ChainContextSubst(const GSUB_LookupList* lookup, const GSUB_LookupTable *look, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
896 {
897 int j;
898 BOOL done = FALSE;
899
900 TRACE("Chaining Contextual Substitution Subtable\n");
901 for (j = 0; j < GET_BE_WORD(look->SubTableCount) && !done; j++)
902 {
903 const GSUB_ChainContextSubstFormat1 *ccsf1;
904 int offset;
905 int dirLookahead = write_dir;
906 int dirBacktrack = -1 * write_dir;
907
908 offset = GET_BE_WORD(look->SubTable[j]);
909 ccsf1 = (const GSUB_ChainContextSubstFormat1*)((const BYTE*)look+offset);
910 if (GET_BE_WORD(ccsf1->SubstFormat) == 1)
911 {
912 FIXME(" TODO: subtype 1 (Simple context glyph substitution)\n");
913 continue;
914 }
915 else if (GET_BE_WORD(ccsf1->SubstFormat) == 2)
916 {
917 FIXME(" TODO: subtype 2 (Class-based Chaining Context Glyph Substitution)\n");
918 continue;
919 }
920 else if (GET_BE_WORD(ccsf1->SubstFormat) == 3)
921 {
922 int k;
923 int indexGlyphs;
924 const GSUB_ChainContextSubstFormat3_1 *ccsf3_1;
925 const GSUB_ChainContextSubstFormat3_2 *ccsf3_2;
926 const GSUB_ChainContextSubstFormat3_3 *ccsf3_3;
927 const GSUB_ChainContextSubstFormat3_4 *ccsf3_4;
928 int newIndex = glyph_index;
929
930 ccsf3_1 = (const GSUB_ChainContextSubstFormat3_1 *)ccsf1;
931
932 TRACE(" subtype 3 (Coverage-based Chaining Context Glyph Substitution)\n");
933
934 for (k = 0; k < GET_BE_WORD(ccsf3_1->BacktrackGlyphCount); k++)
935 {
936 offset = GET_BE_WORD(ccsf3_1->Coverage[k]);
937 if (GSUB_is_glyph_covered((const BYTE*)ccsf3_1+offset, glyphs[glyph_index + (dirBacktrack * (k+1))]) == -1)
938 break;
939 }
940 if (k != GET_BE_WORD(ccsf3_1->BacktrackGlyphCount))
941 continue;
942 TRACE("Matched Backtrack\n");
943
944 ccsf3_2 = (const GSUB_ChainContextSubstFormat3_2 *)(((LPBYTE)ccsf1)+sizeof(GSUB_ChainContextSubstFormat3_1) + (sizeof(WORD) * (GET_BE_WORD(ccsf3_1->BacktrackGlyphCount)-1)));
945
946 indexGlyphs = GET_BE_WORD(ccsf3_2->InputGlyphCount);
947 for (k = 0; k < indexGlyphs; k++)
948 {
949 offset = GET_BE_WORD(ccsf3_2->Coverage[k]);
950 if (GSUB_is_glyph_covered((const BYTE*)ccsf3_1+offset, glyphs[glyph_index + (write_dir * k)]) == -1)
951 break;
952 }
953 if (k != indexGlyphs)
954 continue;
955 TRACE("Matched IndexGlyphs\n");
956
957 ccsf3_3 = (const GSUB_ChainContextSubstFormat3_3 *)(((LPBYTE)ccsf3_2)+sizeof(GSUB_ChainContextSubstFormat3_2) + (sizeof(WORD) * (GET_BE_WORD(ccsf3_2->InputGlyphCount)-1)));
958
959 for (k = 0; k < GET_BE_WORD(ccsf3_3->LookaheadGlyphCount); k++)
960 {
961 offset = GET_BE_WORD(ccsf3_3->Coverage[k]);
962 if (GSUB_is_glyph_covered((const BYTE*)ccsf3_1+offset, glyphs[glyph_index + (dirLookahead * (indexGlyphs + k))]) == -1)
963 break;
964 }
965 if (k != GET_BE_WORD(ccsf3_3->LookaheadGlyphCount))
966 continue;
967 TRACE("Matched LookAhead\n");
968
969 ccsf3_4 = (const GSUB_ChainContextSubstFormat3_4 *)(((LPBYTE)ccsf3_3)+sizeof(GSUB_ChainContextSubstFormat3_3) + (sizeof(WORD) * (GET_BE_WORD(ccsf3_3->LookaheadGlyphCount)-1)));
970
971 if (GET_BE_WORD(ccsf3_4->SubstCount))
972 {
973 for (k = 0; k < GET_BE_WORD(ccsf3_4->SubstCount); k++)
974 {
975 int lookupIndex = GET_BE_WORD(ccsf3_4->SubstLookupRecord[k].LookupListIndex);
976 int SequenceIndex = GET_BE_WORD(ccsf3_4->SubstLookupRecord[k].SequenceIndex) * write_dir;
977
978 TRACE("SUBST: %i -> %i %i\n",k, SequenceIndex, lookupIndex);
979 newIndex = GSUB_apply_lookup(lookup, lookupIndex, glyphs, glyph_index + SequenceIndex, write_dir, glyph_count);
980 if (newIndex == -1)
981 {
982 ERR("Chain failed to generate a glyph\n");
983 continue;
984 }
985 }
986 return newIndex;
987 }
988 else return GSUB_E_NOGLYPH;
989 }
990 }
991 return -1;
992 }
993
994 static INT GSUB_apply_lookup(const GSUB_LookupList* lookup, INT lookup_index, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
995 {
996 int offset;
997 const GSUB_LookupTable *look;
998
999 offset = GET_BE_WORD(lookup->Lookup[lookup_index]);
1000 look = (const GSUB_LookupTable*)((const BYTE*)lookup + offset);
1001 TRACE("type %i, flag %x, subtables %i\n",GET_BE_WORD(look->LookupType),GET_BE_WORD(look->LookupFlag),GET_BE_WORD(look->SubTableCount));
1002 switch(GET_BE_WORD(look->LookupType))
1003 {
1004 case 1:
1005 return GSUB_apply_SingleSubst(look, glyphs, glyph_index, write_dir, glyph_count);
1006 case 2:
1007 return GSUB_apply_MultipleSubst(look, glyphs, glyph_index, write_dir, glyph_count);
1008 case 3:
1009 return GSUB_apply_AlternateSubst(look, glyphs, glyph_index, write_dir, glyph_count);
1010 case 4:
1011 return GSUB_apply_LigatureSubst(look, glyphs, glyph_index, write_dir, glyph_count);
1012 case 6:
1013 return GSUB_apply_ChainContextSubst(lookup, look, glyphs, glyph_index, write_dir, glyph_count);
1014 default:
1015 FIXME("We do not handle SubType %i\n",GET_BE_WORD(look->LookupType));
1016 }
1017 return GSUB_E_NOGLYPH;
1018 }
1019
1020 static INT GSUB_apply_feature(const GSUB_Header * header, const GSUB_Feature* feature, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
1021 {
1022 int i;
1023 int out_index = GSUB_E_NOGLYPH;
1024 const GSUB_LookupList *lookup;
1025
1026 lookup = (const GSUB_LookupList*)((const BYTE*)header + GET_BE_WORD(header->LookupList));
1027
1028 TRACE("%i lookups\n", GET_BE_WORD(feature->LookupCount));
1029 for (i = 0; i < GET_BE_WORD(feature->LookupCount); i++)
1030 {
1031 out_index = GSUB_apply_lookup(lookup, GET_BE_WORD(feature->LookupListIndex[i]), glyphs, glyph_index, write_dir, glyph_count);
1032 if (out_index != GSUB_E_NOGLYPH)
1033 break;
1034 }
1035 if (out_index == GSUB_E_NOGLYPH)
1036 TRACE("lookups found no glyphs\n");
1037 else
1038 {
1039 int out2;
1040 out2 = GSUB_apply_feature(header, feature, glyphs, glyph_index, write_dir, glyph_count);
1041 if (out2!=GSUB_E_NOGLYPH)
1042 out_index = out2;
1043 }
1044 return out_index;
1045 }
1046
1047 static const char* get_opentype_script(HDC hdc, SCRIPT_ANALYSIS *psa, ScriptCache *psc, BOOL tryNew)
1048 {
1049 UINT charset;
1050
1051 if (psc->userScript != 0)
1052 {
1053 if (tryNew && ShapingData[psa->eScript].newOtTag[0] != 0 && strncmp((char*)&psc->userScript,ShapingData[psa->eScript].otTag,4)==0)
1054 return ShapingData[psa->eScript].newOtTag;
1055 else
1056 return (char*)&psc->userScript;
1057 }
1058
1059 if (tryNew && ShapingData[psa->eScript].newOtTag[0] != 0)
1060 return ShapingData[psa->eScript].newOtTag;
1061
1062 if (ShapingData[psa->eScript].otTag[0] != 0)
1063 return ShapingData[psa->eScript].otTag;
1064
1065 /*
1066 * fall back to the font charset
1067 */
1068 charset = GetTextCharsetInfo(hdc, NULL, 0x0);
1069 switch (charset)
1070 {
1071 case ANSI_CHARSET: return "latn";
1072 case BALTIC_CHARSET: return "latn"; /* ?? */
1073 case CHINESEBIG5_CHARSET: return "hani";
1074 case EASTEUROPE_CHARSET: return "latn"; /* ?? */
1075 case GB2312_CHARSET: return "hani";
1076 case GREEK_CHARSET: return "grek";
1077 case HANGUL_CHARSET: return "hang";
1078 case RUSSIAN_CHARSET: return "cyrl";
1079 case SHIFTJIS_CHARSET: return "kana";
1080 case TURKISH_CHARSET: return "latn"; /* ?? */
1081 case VIETNAMESE_CHARSET: return "latn";
1082 case JOHAB_CHARSET: return "latn"; /* ?? */
1083 case ARABIC_CHARSET: return "arab";
1084 case HEBREW_CHARSET: return "hebr";
1085 case THAI_CHARSET: return "thai";
1086 default: return "latn";
1087 }
1088 }
1089
1090 static LPCVOID load_GSUB_feature(HDC hdc, SCRIPT_ANALYSIS *psa, ScriptCache *psc, const char* feat)
1091 {
1092 const GSUB_Feature *feature;
1093 int i;
1094
1095 for (i = 0; i < psc->feature_count; i++)
1096 if (strncmp(psc->features[i].tag,feat,4)==0)
1097 return psc->features[i].feature;
1098
1099 feature = NULL;
1100
1101 if (psc->GSUB_Table)
1102 {
1103 const GSUB_Script *script;
1104 const GSUB_LangSys *language;
1105 int attempt = 2;
1106
1107 do
1108 {
1109 script = GSUB_get_script_table(psc->GSUB_Table, get_opentype_script(hdc,psa,psc,(attempt==2)));
1110 attempt--;
1111 if (script)
1112 {
1113 if (psc->userLang != 0)
1114 language = GSUB_get_lang_table(script,(char*)&psc->userLang);
1115 else
1116 language = GSUB_get_lang_table(script, "xxxx"); /* Need to get Lang tag */
1117 if (language)
1118 feature = GSUB_get_feature(psc->GSUB_Table, language, feat);
1119 }
1120 } while(attempt && !feature);
1121
1122 /* try in the default (latin) table */
1123 if (!feature)
1124 {
1125 script = GSUB_get_script_table(psc->GSUB_Table, "latn");
1126 if (script)
1127 {
1128 language = GSUB_get_lang_table(script, "xxxx"); /* Need to get Lang tag */
1129 if (language)
1130 feature = GSUB_get_feature(psc->GSUB_Table, language, feat);
1131 }
1132 }
1133 }
1134
1135 TRACE("Feature %s located at %p\n",debugstr_an(feat,4),feature);
1136
1137 psc->feature_count++;
1138
1139 if (psc->features)
1140 psc->features = HeapReAlloc(GetProcessHeap(), 0, psc->features, psc->feature_count * sizeof(LoadedFeature));
1141 else
1142 psc->features = HeapAlloc(GetProcessHeap(), 0, psc->feature_count * sizeof(LoadedFeature));
1143
1144 lstrcpynA(psc->features[psc->feature_count - 1].tag, feat, 5);
1145 psc->features[psc->feature_count - 1].feature = feature;
1146 return feature;
1147 }
1148
1149 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)
1150 {
1151 const GSUB_Feature *feature;
1152
1153 feature = load_GSUB_feature(hdc, psa, psc, feat);
1154 if (!feature)
1155 return GSUB_E_NOFEATURE;
1156
1157 TRACE("applying feature %s\n",feat);
1158 return GSUB_apply_feature(psc->GSUB_Table, feature, glyphs, index, write_dir, glyph_count);
1159 }
1160
1161 static VOID *load_gsub_table(HDC hdc)
1162 {
1163 VOID* GSUB_Table = NULL;
1164 int length = GetFontData(hdc, GSUB_TAG , 0, NULL, 0);
1165 if (length != GDI_ERROR)
1166 {
1167 GSUB_Table = HeapAlloc(GetProcessHeap(),0,length);
1168 GetFontData(hdc, GSUB_TAG , 0, GSUB_Table, length);
1169 TRACE("Loaded GSUB table of %i bytes\n",length);
1170 }
1171 return GSUB_Table;
1172 }
1173
1174 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)
1175 {
1176 WORD *glyphs;
1177 INT glyph_count = count;
1178 INT rc;
1179
1180 glyphs = HeapAlloc(GetProcessHeap(),0,sizeof(WORD)*(count*2));
1181 GetGlyphIndicesW(hdc, chars, count, glyphs, 0);
1182 rc = apply_GSUB_feature_to_glyph(hdc, psa, psc, glyphs, 0, write_dir, &glyph_count, feature);
1183 if (rc > GSUB_E_NOGLYPH)
1184 rc = count - glyph_count;
1185 else
1186 rc = 0;
1187
1188 HeapFree(GetProcessHeap(),0,glyphs);
1189 return rc;
1190 }
1191
1192 static WORD GDEF_get_glyph_class(const GDEF_Header *header, WORD glyph)
1193 {
1194 int offset;
1195 WORD class = 0;
1196 const GDEF_ClassDefFormat1 *cf1;
1197
1198 if (!header)
1199 return 0;
1200
1201 offset = GET_BE_WORD(header->GlyphClassDef);
1202 if (!offset)
1203 return 0;
1204
1205 cf1 = (GDEF_ClassDefFormat1*)(((BYTE*)header)+offset);
1206 if (GET_BE_WORD(cf1->ClassFormat) == 1)
1207 {
1208 if (glyph >= GET_BE_WORD(cf1->StartGlyph))
1209 {
1210 int index = glyph - GET_BE_WORD(cf1->StartGlyph);
1211 if (index < GET_BE_WORD(cf1->GlyphCount))
1212 class = GET_BE_WORD(cf1->ClassValueArray[index]);
1213 }
1214 }
1215 else if (GET_BE_WORD(cf1->ClassFormat) == 2)
1216 {
1217 const GDEF_ClassDefFormat2 *cf2 = (GDEF_ClassDefFormat2*)cf1;
1218 int i, top;
1219 top = GET_BE_WORD(cf2->ClassRangeCount);
1220 for (i = 0; i < top; i++)
1221 {
1222 if (glyph >= GET_BE_WORD(cf2->ClassRangeRecord[i].Start) &&
1223 glyph <= GET_BE_WORD(cf2->ClassRangeRecord[i].End))
1224 {
1225 class = GET_BE_WORD(cf2->ClassRangeRecord[i].Class);
1226 break;
1227 }
1228 }
1229 }
1230 else
1231 ERR("Unknown Class Format %i\n",GET_BE_WORD(cf1->ClassFormat));
1232
1233 return class;
1234 }
1235
1236 static VOID *load_gdef_table(HDC hdc)
1237 {
1238 VOID* GDEF_Table = NULL;
1239 int length = GetFontData(hdc, GDEF_TAG , 0, NULL, 0);
1240 if (length != GDI_ERROR)
1241 {
1242 GDEF_Table = HeapAlloc(GetProcessHeap(),0,length);
1243 GetFontData(hdc, GDEF_TAG , 0, GDEF_Table, length);
1244 TRACE("Loaded GDEF table of %i bytes\n",length);
1245 }
1246 return GDEF_Table;
1247 }
1248
1249 static void GDEF_UpdateGlyphProps(HDC hdc, ScriptCache *psc, const WORD *pwGlyphs, const WORD cGlyphs, WORD* pwLogClust, SCRIPT_GLYPHPROP *pGlyphProp)
1250 {
1251 int i;
1252
1253 if (!psc->GDEF_Table)
1254 psc->GDEF_Table = load_gdef_table(hdc);
1255
1256 for (i = 0; i < cGlyphs; i++)
1257 {
1258 WORD class;
1259
1260 class = GDEF_get_glyph_class(psc->GDEF_Table, pwGlyphs[i]);
1261
1262 switch (class)
1263 {
1264 case 0:
1265 case BaseGlyph:
1266 pGlyphProp[i].sva.fClusterStart = 1;
1267 pGlyphProp[i].sva.fDiacritic = 0;
1268 pGlyphProp[i].sva.fZeroWidth = 0;
1269 break;
1270 case LigatureGlyph:
1271 pGlyphProp[i].sva.fClusterStart = 1;
1272 pGlyphProp[i].sva.fDiacritic = 0;
1273 pGlyphProp[i].sva.fZeroWidth = 0;
1274 break;
1275 case MarkGlyph:
1276 pGlyphProp[i].sva.fClusterStart = 0;
1277 pGlyphProp[i].sva.fDiacritic = 1;
1278 pGlyphProp[i].sva.fZeroWidth = 1;
1279 break;
1280 case ComponentGlyph:
1281 pGlyphProp[i].sva.fClusterStart = 0;
1282 pGlyphProp[i].sva.fDiacritic = 0;
1283 pGlyphProp[i].sva.fZeroWidth = 0;
1284 break;
1285 default:
1286 ERR("Unknown glyph class %i\n",class);
1287 pGlyphProp[i].sva.fClusterStart = 1;
1288 pGlyphProp[i].sva.fDiacritic = 0;
1289 pGlyphProp[i].sva.fZeroWidth = 0;
1290 }
1291 }
1292 }
1293
1294 static void UpdateClustersFromGlyphProp(const int cGlyphs, const int cChars, WORD* pwLogClust, SCRIPT_GLYPHPROP *pGlyphProp)
1295 {
1296 int i;
1297
1298 for (i = 0; i < cGlyphs; i++)
1299 {
1300 if (!pGlyphProp[i].sva.fClusterStart)
1301 {
1302 int j;
1303 for (j = 0; j < cChars; j++)
1304 {
1305 if (pwLogClust[j] == i)
1306 {
1307 int k = j;
1308 while (!pGlyphProp[pwLogClust[k]].sva.fClusterStart && k >= 0 && k <cChars)
1309 k-=1;
1310 if (pGlyphProp[pwLogClust[k]].sva.fClusterStart)
1311 pwLogClust[j] = pwLogClust[k];
1312 }
1313 }
1314 }
1315 }
1316 }
1317
1318 static void UpdateClusters(int nextIndex, int changeCount, int write_dir, int chars, WORD* pwLogClust )
1319 {
1320 if (changeCount == 0)
1321 return;
1322 else
1323 {
1324 int i;
1325 int target_glyph = nextIndex - 1;
1326 int seeking_glyph;
1327 int target_index = -1;
1328 int replacing_glyph = -1;
1329 int changed = 0;
1330
1331
1332 if (changeCount > 0)
1333 target_glyph = nextIndex - (changeCount+1);
1334
1335 seeking_glyph = target_glyph;
1336
1337 do {
1338 if (write_dir > 0)
1339 for (i = 0; i < chars; i++)
1340 {
1341 if (pwLogClust[i] == seeking_glyph)
1342 {
1343 target_index = i;
1344 break;
1345 }
1346 }
1347 else
1348 for (i = chars - 1; i >= 0; i--)
1349 {
1350 if (pwLogClust[i] == seeking_glyph)
1351 {
1352 target_index = i;
1353 break;
1354 }
1355 }
1356 if (target_index == -1)
1357 seeking_glyph ++;
1358 }
1359 while (target_index == -1 && seeking_glyph < chars);
1360
1361 if (target_index == -1)
1362 {
1363 ERR("Unable to find target glyph\n");
1364 return;
1365 }
1366
1367 if (changeCount < 0)
1368 {
1369 /* merge glyphs */
1370 for(i = target_index; i < chars && i >= 0; i+=write_dir)
1371 {
1372 if (pwLogClust[i] == target_glyph)
1373 continue;
1374 if(pwLogClust[i] == replacing_glyph)
1375 pwLogClust[i] = target_glyph;
1376 else
1377 {
1378 changed--;
1379 if (changed >= changeCount)
1380 {
1381 replacing_glyph = pwLogClust[i];
1382 pwLogClust[i] = target_glyph;
1383 }
1384 else
1385 break;
1386 }
1387 }
1388
1389 /* renumber trailing indexes*/
1390 for(i = target_index; i < chars && i >= 0; i+=write_dir)
1391 {
1392 if (pwLogClust[i] != target_glyph)
1393 pwLogClust[i] += changeCount;
1394 }
1395 }
1396 else
1397 {
1398 for(i = target_index; i < chars && i >= 0; i+=write_dir)
1399 pwLogClust[i] += changeCount;
1400 }
1401 }
1402 }
1403
1404 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 )
1405 {
1406 int i;
1407
1408 if (psc->GSUB_Table)
1409 {
1410 const GSUB_Feature *feature;
1411
1412 feature = load_GSUB_feature(hdc, psa, psc, feat);
1413 if (!feature)
1414 return GSUB_E_NOFEATURE;
1415
1416 i = 0;
1417 TRACE("applying feature %s\n",debugstr_an(feat,4));
1418 while(i < *pcGlyphs)
1419 {
1420 INT nextIndex;
1421 INT prevCount = *pcGlyphs;
1422 nextIndex = GSUB_apply_feature(psc->GSUB_Table, feature, pwOutGlyphs, i, write_dir, pcGlyphs);
1423 if (nextIndex > GSUB_E_NOGLYPH)
1424 {
1425 UpdateClusters(nextIndex, *pcGlyphs - prevCount, write_dir, cChars, pwLogClust);
1426 i = nextIndex;
1427 }
1428 else
1429 i++;
1430 }
1431 return *pcGlyphs;
1432 }
1433 return GSUB_E_NOFEATURE;
1434 }
1435
1436 static inline BOOL get_GSUB_Indic2(SCRIPT_ANALYSIS *psa, ScriptCache *psc)
1437 {
1438 return(GSUB_get_script_table(psc->GSUB_Table,ShapingData[psa->eScript].newOtTag)!=NULL);
1439 }
1440
1441 static WCHAR neighbour_char(int i, int delta, const WCHAR* chars, INT cchLen)
1442 {
1443 if (i + delta < 0)
1444 return 0;
1445 if ( i+ delta >= cchLen)
1446 return 0;
1447
1448 i += delta;
1449
1450 return chars[i];
1451 }
1452
1453 static CHAR neighbour_joining_type(int i, int delta, const CHAR* context_type, INT cchLen, SCRIPT_ANALYSIS *psa)
1454 {
1455 if (i + delta < 0)
1456 {
1457 if (psa->fLinkBefore)
1458 return jtR;
1459 else
1460 return jtU;
1461 }
1462 if ( i+ delta >= cchLen)
1463 {
1464 if (psa->fLinkAfter)
1465 return jtL;
1466 else
1467 return jtU;
1468 }
1469
1470 i += delta;
1471
1472 if (context_type[i] == jtT)
1473 return neighbour_joining_type(i,delta,context_type,cchLen,psa);
1474 else
1475 return context_type[i];
1476 }
1477
1478 static inline BOOL right_join_causing(CHAR joining_type)
1479 {
1480 return (joining_type == jtL || joining_type == jtD || joining_type == jtC);
1481 }
1482
1483 static inline BOOL left_join_causing(CHAR joining_type)
1484 {
1485 return (joining_type == jtR || joining_type == jtD || joining_type == jtC);
1486 }
1487
1488 static inline BOOL word_break_causing(WCHAR chr)
1489 {
1490 /* we are working within a string of characters already guareented to
1491 be within one script, Syriac, so we do not worry about any character
1492 other than the space character outside of that range */
1493 return (chr == 0 || chr == 0x20 );
1494 }
1495
1496 /*
1497 * ContextualShape_Arabic
1498 */
1499 static void ContextualShape_Arabic(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
1500 {
1501 CHAR *context_type;
1502 INT *context_shape;
1503 INT dirR, dirL;
1504 int i;
1505
1506 if (*pcGlyphs != cChars)
1507 {
1508 ERR("Number of Glyphs and Chars need to match at the beginning\n");
1509 return;
1510 }
1511
1512 if (!psa->fLogicalOrder && psa->fRTL)
1513 {
1514 dirR = 1;
1515 dirL = -1;
1516 }
1517 else
1518 {
1519 dirR = -1;
1520 dirL = 1;
1521 }
1522
1523 if (!psc->GSUB_Table)
1524 psc->GSUB_Table = load_gsub_table(hdc);
1525
1526 context_type = HeapAlloc(GetProcessHeap(),0,cChars);
1527 context_shape = HeapAlloc(GetProcessHeap(),0,sizeof(INT) * cChars);
1528
1529 for (i = 0; i < cChars; i++)
1530 context_type[i] = get_table_entry( wine_shaping_table, pwcChars[i] );
1531
1532 for (i = 0; i < cChars; i++)
1533 {
1534 if (context_type[i] == jtR && right_join_causing(neighbour_joining_type(i,dirR,context_type,cChars,psa)))
1535 context_shape[i] = Xr;
1536 else if (context_type[i] == jtL && left_join_causing(neighbour_joining_type(i,dirL,context_type,cChars,psa)))
1537 context_shape[i] = Xl;
1538 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)))
1539 context_shape[i] = Xm;
1540 else if (context_type[i] == jtD && right_join_causing(neighbour_joining_type(i,dirR,context_type,cChars,psa)))
1541 context_shape[i] = Xr;
1542 else if (context_type[i] == jtD && left_join_causing(neighbour_joining_type(i,dirL,context_type,cChars,psa)))
1543 context_shape[i] = Xl;
1544 else
1545 context_shape[i] = Xn;
1546 }
1547
1548 /* Contextual Shaping */
1549 i = 0;
1550 while(i < *pcGlyphs)
1551 {
1552 BOOL shaped = FALSE;
1553
1554 if (psc->GSUB_Table)
1555 {
1556 INT nextIndex;
1557 INT prevCount = *pcGlyphs;
1558 nextIndex = apply_GSUB_feature_to_glyph(hdc, psa, psc, pwOutGlyphs, i, dirL, pcGlyphs, contextual_features[context_shape[i]]);
1559 if (nextIndex > GSUB_E_NOGLYPH)
1560 {
1561 i = nextIndex;
1562 UpdateClusters(nextIndex, *pcGlyphs - prevCount, dirL, cChars, pwLogClust);
1563 }
1564 shaped = (nextIndex > GSUB_E_NOGLYPH);
1565 }
1566
1567 if (!shaped)
1568 {
1569 WORD newGlyph = pwOutGlyphs[i];
1570 if (pwcChars[i] >= FIRST_ARABIC_CHAR && pwcChars[i] <= LAST_ARABIC_CHAR)
1571 {
1572 /* fall back to presentation form B */
1573 WCHAR context_char = wine_shaping_forms[pwcChars[i] - FIRST_ARABIC_CHAR][context_shape[i]];
1574 if (context_char != pwcChars[i] && GetGlyphIndicesW(hdc, &context_char, 1, &newGlyph, 0) != GDI_ERROR && newGlyph != 0x0000)
1575 pwOutGlyphs[i] = newGlyph;
1576 }
1577 i++;
1578 }
1579 }
1580
1581 HeapFree(GetProcessHeap(),0,context_shape);
1582 HeapFree(GetProcessHeap(),0,context_type);
1583 }
1584
1585 /*
1586 * ContextualShape_Syriac
1587 */
1588
1589 #define ALAPH 0x710
1590 #define DALATH 0x715
1591 #define RISH 0x72A
1592
1593 static void ContextualShape_Syriac(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
1594 {
1595 CHAR *context_type;
1596 INT *context_shape;
1597 INT dirR, dirL;
1598 int i;
1599
1600 if (*pcGlyphs != cChars)
1601 {
1602 ERR("Number of Glyphs and Chars need to match at the beginning\n");
1603 return;
1604 }
1605
1606 if (!psa->fLogicalOrder && psa->fRTL)
1607 {
1608 dirR = 1;
1609 dirL = -1;
1610 }
1611 else
1612 {
1613 dirR = -1;
1614 dirL = 1;
1615 }
1616
1617 if (!psc->GSUB_Table)
1618 psc->GSUB_Table = load_gsub_table(hdc);
1619
1620 if (!psc->GSUB_Table)
1621 return;
1622
1623 context_type = HeapAlloc(GetProcessHeap(),0,cChars);
1624 context_shape = HeapAlloc(GetProcessHeap(),0,sizeof(INT) * cChars);
1625
1626 for (i = 0; i < cChars; i++)
1627 context_type[i] = get_table_entry( wine_shaping_table, pwcChars[i] );
1628
1629 for (i = 0; i < cChars; i++)
1630 {
1631 if (pwcChars[i] == ALAPH)
1632 {
1633 WCHAR rchar = neighbour_char(i,dirR,pwcChars,cChars);
1634
1635 if (left_join_causing(neighbour_joining_type(i,dirR,context_type,cChars,psa)) && word_break_causing(neighbour_char(i,dirL,pwcChars,cChars)))
1636 context_shape[i] = Afj;
1637 else if ( rchar != DALATH && rchar != RISH &&
1638 !left_join_causing(neighbour_joining_type(i,dirR,context_type,cChars,psa)) &&
1639 word_break_causing(neighbour_char(i,dirL,pwcChars,cChars)))
1640 context_shape[i] = Afn;
1641 else if ( (rchar == DALATH || rchar == RISH) && word_break_causing(neighbour_char(i,dirL,pwcChars,cChars)))
1642 context_shape[i] = Afx;
1643 else
1644 context_shape[i] = Xn;
1645 }
1646 else if (context_type[i] == jtR &&
1647 right_join_causing(neighbour_joining_type(i,dirR,context_type,cChars,psa)))
1648 context_shape[i] = Xr;
1649 else if (context_type[i] == jtL && left_join_causing(neighbour_joining_type(i,dirL,context_type,cChars,psa)))
1650 context_shape[i] = Xl;
1651 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)))
1652 context_shape[i] = Xm;
1653 else if (context_type[i] == jtD && right_join_causing(neighbour_joining_type(i,dirR,context_type,cChars,psa)))
1654 context_shape[i] = Xr;
1655 else if (context_type[i] == jtD && left_join_causing(neighbour_joining_type(i,dirL,context_type,cChars,psa)))
1656 context_shape[i] = Xl;
1657 else
1658 context_shape[i] = Xn;
1659 }
1660
1661 /* Contextual Shaping */
1662 i = 0;
1663 while(i < *pcGlyphs)
1664 {
1665 INT nextIndex;
1666 INT prevCount = *pcGlyphs;
1667 nextIndex = apply_GSUB_feature_to_glyph(hdc, psa, psc, pwOutGlyphs, i, dirL, pcGlyphs, contextual_features[context_shape[i]]);
1668 if (nextIndex > GSUB_E_NOGLYPH)
1669 {
1670 UpdateClusters(nextIndex, *pcGlyphs - prevCount, dirL, cChars, pwLogClust);
1671 i = nextIndex;
1672 }
1673 else
1674 i++;
1675 }
1676
1677 HeapFree(GetProcessHeap(),0,context_shape);
1678 HeapFree(GetProcessHeap(),0,context_type);
1679 }
1680
1681 /*
1682 * ContextualShape_Phags_pa
1683 */
1684
1685 #define phags_pa_CANDRABINDU 0xA873
1686 #define phags_pa_START 0xA840
1687 #define phags_pa_END 0xA87F
1688
1689 static void ContextualShape_Phags_pa(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
1690 {
1691 INT *context_shape;
1692 INT dirR, dirL;
1693 int i;
1694
1695 if (*pcGlyphs != cChars)
1696 {
1697 ERR("Number of Glyphs and Chars need to match at the beginning\n");
1698 return;
1699 }
1700
1701 if (!psa->fLogicalOrder && psa->fRTL)
1702 {
1703 dirR = 1;
1704 dirL = -1;
1705 }
1706 else
1707 {
1708 dirR = -1;
1709 dirL = 1;
1710 }
1711
1712 if (!psc->GSUB_Table)
1713 psc->GSUB_Table = load_gsub_table(hdc);
1714
1715 if (!psc->GSUB_Table)
1716 return;
1717
1718 context_shape = HeapAlloc(GetProcessHeap(),0,sizeof(INT) * cChars);
1719
1720 for (i = 0; i < cChars; i++)
1721 {
1722 if (pwcChars[i] >= phags_pa_START && pwcChars[i] <= phags_pa_END)
1723 {
1724 WCHAR rchar = neighbour_char(i,dirR,pwcChars,cChars);
1725 WCHAR lchar = neighbour_char(i,dirL,pwcChars,cChars);
1726 BOOL jrchar = (rchar != phags_pa_CANDRABINDU && rchar >= phags_pa_START && rchar <= phags_pa_END);
1727 BOOL jlchar = (lchar != phags_pa_CANDRABINDU && lchar >= phags_pa_START && lchar <= phags_pa_END);
1728
1729 if (jrchar && jlchar)
1730 context_shape[i] = Xm;
1731 else if (jrchar)
1732 context_shape[i] = Xr;
1733 else if (jlchar)
1734 context_shape[i] = Xl;
1735 else
1736 context_shape[i] = Xn;
1737 }
1738 else
1739 context_shape[i] = -1;
1740 }
1741
1742 /* Contextual Shaping */
1743 i = 0;
1744 while(i < *pcGlyphs)
1745 {
1746 if (context_shape[i] >= 0)
1747 {
1748 INT nextIndex;
1749 INT prevCount = *pcGlyphs;
1750 nextIndex = apply_GSUB_feature_to_glyph(hdc, psa, psc, pwOutGlyphs, i, dirL, pcGlyphs, contextual_features[context_shape[i]]);
1751 if (nextIndex > GSUB_E_NOGLYPH)
1752 {
1753 UpdateClusters(nextIndex, *pcGlyphs - prevCount, dirL, cChars, pwLogClust);
1754 i = nextIndex;
1755 }
1756 else
1757 i++;
1758 }
1759 else
1760 i++;
1761 }
1762
1763 HeapFree(GetProcessHeap(),0,context_shape);
1764 }
1765
1766 static void ReplaceInsertChars(HDC hdc, INT cWalk, INT* pcChars, WCHAR *pwOutChars, const WCHAR *replacements)
1767 {
1768 int i;
1769
1770 /* Replace */
1771 pwOutChars[cWalk] = replacements[0];
1772 cWalk=cWalk+1;
1773
1774 /* Insert */
1775 for (i = 1; replacements[i] != 0x0000 && i < 3; i++)
1776 {
1777 int j;
1778 for (j = *pcChars; j > cWalk; j--)
1779 pwOutChars[j] = pwOutChars[j-1];
1780 *pcChars= *pcChars+1;
1781 pwOutChars[cWalk] = replacements[i];
1782 cWalk = cWalk+1;
1783 }
1784 }
1785
1786 static void DecomposeVowels(HDC hdc, WCHAR *pwOutChars, INT *pcChars, const VowelComponents vowels[])
1787 {
1788 int i;
1789 int cWalk;
1790
1791 for (cWalk = 0; cWalk < *pcChars; cWalk++)
1792 {
1793 for (i = 0; vowels[i].base != 0x0; i++)
1794 {
1795 if (pwOutChars[cWalk] == vowels[i].base)
1796 {
1797 ReplaceInsertChars(hdc, cWalk, pcChars, pwOutChars, vowels[i].parts);
1798 if (vowels[i].parts[1]) cWalk++;
1799 if (vowels[i].parts[2]) cWalk++;
1800 break;
1801 }
1802 }
1803 }
1804 }
1805
1806 static void ComposeConsonants(HDC hdc, WCHAR *pwOutChars, INT *pcChars, const ConsonantComponents consonants[])
1807 {
1808 int i;
1809 int cWalk;
1810
1811 for (cWalk = 0; cWalk < *pcChars; cWalk++)
1812 {
1813 for (i = 0; consonants[i].output!= 0x0; i++)
1814 {
1815 int j;
1816 for (j = 0; j + cWalk < *pcChars && consonants[i].parts[j]!=0x0; j++)
1817 if (pwOutChars[cWalk+j] != consonants[i].parts[j])
1818 break;
1819
1820 if (consonants[i].parts[j]==0x0) /* matched all */
1821 {
1822 int k;
1823 j--;
1824 pwOutChars[cWalk] = consonants[i].output;
1825 for(k = cWalk+1; k < *pcChars - j; k++)
1826 pwOutChars[k] = pwOutChars[k+j];
1827 *pcChars = *pcChars - j;
1828 break;
1829 }
1830 }
1831 cWalk++;
1832 }
1833 }
1834
1835 static void Reorder_Ra_follows_base(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
1836 {
1837 if (s->ralf >= 0)
1838 {
1839 int j;
1840 WORD Ra = pwChar[s->start];
1841 WORD H = pwChar[s->start+1];
1842
1843 TRACE("Doing reorder of Ra to %i\n",s->base);
1844 for (j = s->start; j < s->base-1; j++)
1845 pwChar[j] = pwChar[j+2];
1846 pwChar[s->base-1] = Ra;
1847 pwChar[s->base] = H;
1848
1849 s->ralf = s->base-1;
1850 s->base -= 2;
1851 }
1852 }
1853
1854 static void Reorder_Ra_follows_matra(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
1855 {
1856 if (s->ralf >= 0)
1857 {
1858 int j,loc;
1859 int stop = (s->blwf >=0)? s->blwf+1 : s->base;
1860 WORD Ra = pwChar[s->start];
1861 WORD H = pwChar[s->start+1];
1862 for (loc = s->end; loc > stop; loc--)
1863 if (lexical(pwChar[loc]) == lex_Matra_post || lexical(pwChar[loc]) == lex_Matra_below)
1864 break;
1865
1866 TRACE("Doing reorder of Ra to %i\n",loc);
1867 for (j = s->start; j < loc-1; j++)
1868 pwChar[j] = pwChar[j+2];
1869 pwChar[loc-1] = Ra;
1870 pwChar[loc] = H;
1871
1872 s->ralf = loc-1;
1873 s->base -= 2;
1874 if (s->blwf >= 0) s->blwf -= 2;
1875 if (s->pref >= 0) s->pref -= 2;
1876 }
1877 }
1878
1879 static void Reorder_Ra_follows_syllable(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
1880 {
1881 if (s->ralf >= 0)
1882 {
1883 int j;
1884 WORD Ra = pwChar[s->start];
1885 WORD H = pwChar[s->start+1];
1886
1887 TRACE("Doing reorder of Ra to %i\n",s->end-1);
1888 for (j = s->start; j < s->end-1; j++)
1889 pwChar[j] = pwChar[j+2];
1890 pwChar[s->end-1] = Ra;
1891 pwChar[s->end] = H;
1892
1893 s->ralf = s->end-1;
1894 s->base -= 2;
1895 if (s->blwf >= 0) s->blwf -= 2;
1896 if (s->pref >= 0) s->pref -= 2;
1897 }
1898 }
1899
1900 static void Reorder_Matra_precede_base(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
1901 {
1902 int i;
1903
1904 /* reorder Matras */
1905 if (s->end > s->base)
1906 {
1907 for (i = 1; i <= s->end-s->base; i++)
1908 {
1909 if (lexical(pwChar[s->base+i]) == lex_Matra_pre)
1910 {
1911 int j;
1912 WCHAR c = pwChar[s->base+i];
1913 TRACE("Doing reorder of %x %x\n",c,pwChar[s->base]);
1914 for (j = s->base+i; j > s->base; j--)
1915 pwChar[j] = pwChar[j-1];
1916 pwChar[s->base] = c;
1917
1918 if (s->ralf >= s->base) s->ralf++;
1919 if (s->blwf >= s->base) s->blwf++;
1920 if (s->pref >= s->base) s->pref++;
1921 s->base ++;
1922 }
1923 }
1924 }
1925 }
1926
1927 static void Reorder_Matra_precede_syllable(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
1928 {
1929 int i;
1930
1931 /* reorder Matras */
1932 if (s->end > s->base)
1933 {
1934 for (i = 1; i <= s->end-s->base; i++)
1935 {
1936 if (lexical(pwChar[s->base+i]) == lex_Matra_pre)
1937 {
1938 int j;
1939 WCHAR c = pwChar[s->base+i];
1940 TRACE("Doing reorder of %x to %i\n",c,s->start);
1941 for (j = s->base+i; j > s->start; j--)
1942 pwChar[j] = pwChar[j-1];
1943 pwChar[s->start] = c;
1944
1945 if (s->ralf >= 0) s->ralf++;
1946 if (s->blwf >= 0) s->blwf++;
1947 if (s->pref >= 0) s->pref++;
1948 s->base ++;
1949 }
1950 }
1951 }
1952 }
1953
1954 static void SecondReorder_Blwf_follows_matra(LPWSTR pwChar, IndicSyllable *s, WORD *glyphs, IndicSyllable *g, lexical_function lexical)
1955 {
1956 if (s->blwf >= 0 && g->blwf > g->base)
1957 {
1958 int j,loc;
1959 int g_offset;
1960 for (loc = s->end; loc > s->blwf; loc--)
1961 if (lexical(pwChar[loc]) == lex_Matra_below || lexical(pwChar[loc]) == lex_Matra_above || lexical(pwChar[loc]) == lex_Matra_post)
1962 break;
1963
1964 g_offset = (loc - s->blwf) - 1;
1965
1966 if (loc != s->blwf)
1967 {
1968 WORD blwf = glyphs[g->blwf];
1969 TRACE("Doing reorder of Below-base to %i (glyph offset %i)\n",loc,g_offset);
1970 /* do not care about the pwChar array anymore, just the glyphs */
1971 for (j = 0; j < g_offset; j++)
1972 glyphs[g->blwf + j] = glyphs[g->blwf + j + 1];
1973 glyphs[g->blwf + g_offset] = blwf;
1974 }
1975 }
1976 }
1977
1978 static void SecondReorder_Matra_precede_base(LPWSTR pwChar, IndicSyllable *s, WORD *glyphs, IndicSyllable *g, lexical_function lexical)
1979 {
1980 int i;
1981
1982 /* reorder previously moved Matras to correct position*/
1983 for (i = s->start; i < s->base; i++)
1984 {
1985 if (lexical(pwChar[i]) == lex_Matra_pre)
1986 {
1987 int j;
1988 int g_start = g->start + i - s->start;
1989 if (g_start < g->base -1 )
1990 {
1991 WCHAR og = glyphs[g_start];
1992 TRACE("Doing reorder of matra from %i to %i\n",g_start,g->base);
1993 for (j = g_start; j < g->base-1; j++)
1994 glyphs[j] = glyphs[j+1];
1995 glyphs[g->base-1] = og;
1996 }
1997 }
1998 }
1999 }
2000
2001 static void SecondReorder_Pref_precede_base(LPWSTR pwChar, IndicSyllable *s, WORD *glyphs, IndicSyllable *g, lexical_function lexical)
2002 {
2003 if (s->pref >= 0 && g->pref > g->base)
2004 {
2005 int j;
2006 WCHAR og = glyphs[g->pref];
2007 TRACE("Doing reorder of pref from %i to %i\n",g->pref,g->base);
2008 for (j = g->pref; j > g->base; j--)
2009 glyphs[j] = glyphs[j-1];
2010 glyphs[g->base] = og;
2011 }
2012 }
2013
2014 static void Reorder_Like_Sinhala(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
2015 {
2016 TRACE("Syllable (%i..%i..%i)\n",s->start,s->base,s->end);
2017 if (s->start == s->base && s->base == s->end) return;
2018 if (lexical(pwChar[s->base]) == lex_Vowel) return;
2019
2020 Reorder_Ra_follows_base(pwChar, s, lexical);
2021 Reorder_Matra_precede_base(pwChar, s, lexical);
2022 }
2023
2024 static void Reorder_Like_Devanagari(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
2025 {
2026 TRACE("Syllable (%i..%i..%i)\n",s->start,s->base,s->end);
2027 if (s->start == s->base && s->base == s->end) return;
2028 if (lexical(pwChar[s->base]) == lex_Vowel) return;
2029
2030 Reorder_Ra_follows_matra(pwChar, s, lexical);
2031 Reorder_Matra_precede_syllable(pwChar, s, lexical);
2032 }
2033
2034 static void Reorder_Like_Bengali(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
2035 {
2036 TRACE("Syllable (%i..%i..%i)\n",s->start,s->base,s->end);
2037 if (s->start == s->base && s->base == s->end) return;
2038 if (lexical(pwChar[s->base]) == lex_Vowel) return;
2039
2040 Reorder_Ra_follows_base(pwChar, s, lexical);
2041 Reorder_Matra_precede_syllable(pwChar, s, lexical);
2042 }
2043
2044 static void Reorder_Like_Kannada(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
2045 {
2046 TRACE("Syllable (%i..%i..%i)\n",s->start,s->base,s->end);
2047 if (s->start == s->base && s->base == s->end) return;
2048 if (lexical(pwChar[s->base]) == lex_Vowel) return;
2049
2050 Reorder_Ra_follows_syllable(pwChar, s, lexical);
2051 Reorder_Matra_precede_syllable(pwChar, s, lexical);
2052 }
2053
2054 static void SecondReorder_Like_Telugu(LPWSTR pwChar, IndicSyllable *s, WORD* pwGlyphs, IndicSyllable *g, lexical_function lexical)
2055 {
2056 TRACE("Syllable (%i..%i..%i)\n",s->start,s->base,s->end);
2057 TRACE("Glyphs (%i..%i..%i)\n",g->start,g->base,g->end);
2058 if (s->start == s->base && s->base == s->end) return;
2059 if (lexical(pwChar[s->base]) == lex_Vowel) return;
2060
2061 SecondReorder_Blwf_follows_matra(pwChar, s, pwGlyphs, g, lexical);
2062 }
2063
2064 static void SecondReorder_Like_Tamil(LPWSTR pwChar, IndicSyllable *s, WORD* pwGlyphs, IndicSyllable *g, lexical_function lexical)
2065 {
2066 TRACE("Syllable (%i..%i..%i)\n",s->start,s->base,s->end);
2067 TRACE("Glyphs (%i..%i..%i)\n",g->start,g->base,g->end);
2068 if (s->start == s->base && s->base == s->end) return;
2069 if (lexical(pwChar[s->base]) == lex_Vowel) return;
2070
2071 SecondReorder_Matra_precede_base(pwChar, s, pwGlyphs, g, lexical);
2072 SecondReorder_Pref_precede_base(pwChar, s, pwGlyphs, g, lexical);
2073 }
2074
2075
2076 static inline void shift_syllable_glyph_indexs(IndicSyllable *glyph_index, INT index, INT shift)
2077 {
2078 if (shift == 0)
2079 return;
2080
2081 if (glyph_index->start > index)
2082 glyph_index->start += shift;
2083 if (glyph_index->base > index)
2084 glyph_index->base+= shift;
2085 if (glyph_index->end > index)
2086 glyph_index->end+= shift;
2087 if (glyph_index->ralf > index)
2088 glyph_index->ralf+= shift;
2089 if (glyph_index->blwf > index)
2090 glyph_index->blwf+= shift;
2091 if (glyph_index->pref > index)
2092 glyph_index->pref+= shift;
2093 }
2094
2095 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 )
2096 {
2097 int index = glyph_index->start;
2098
2099 if (!feature)
2100 return;
2101
2102 while(index <= glyph_index->end)
2103 {
2104 INT nextIndex;
2105 INT prevCount = *pcGlyphs;
2106 nextIndex = GSUB_apply_feature(psc->GSUB_Table, feature, pwOutGlyphs, index, 1, pcGlyphs);
2107 if (nextIndex > GSUB_E_NOGLYPH)
2108 {
2109 UpdateClusters(nextIndex, *pcGlyphs - prevCount, 1, cChars, pwLogClust);
2110 shift_syllable_glyph_indexs(glyph_index,index,*pcGlyphs - prevCount);
2111 index = nextIndex;
2112 }
2113 else
2114 index++;
2115 }
2116 }
2117
2118 static inline INT find_consonant_halant(WCHAR* pwChars, INT index, INT end, lexical_function lexical)
2119 {
2120 int i = 0;
2121 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)))))
2122 i++;
2123 if (index + i <= end-1)
2124 return index + i;
2125 else
2126 return -1;
2127 }
2128
2129 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)
2130 {
2131 INT index, nextIndex;
2132 INT count,g_offset;
2133
2134 count = syllable->base - syllable->start;
2135
2136 g_offset = 0;
2137 index = find_consonant_halant(&pwChars[syllable->start], 0, count, lexical);
2138 while (index >= 0 && index + g_offset < (glyph_index->base - glyph_index->start))
2139 {
2140 INT prevCount = *pcGlyphs;
2141 nextIndex = apply_GSUB_feature_to_glyph(hdc, psa, psc, pwOutGlyphs, index+glyph_index->start+g_offset, 1, pcGlyphs, feature);
2142 if (nextIndex > GSUB_E_NOGLYPH)
2143 {
2144 UpdateClusters(nextIndex, *pcGlyphs - prevCount, 1, cChars, pwLogClust);
2145 shift_syllable_glyph_indexs(glyph_index, index + glyph_index->start + g_offset, (*pcGlyphs - prevCount));
2146 g_offset += (*pcGlyphs - prevCount);
2147 }
2148
2149 index+=2;
2150 index = find_consonant_halant(&pwChars[syllable->start], index, count, lexical);
2151 }
2152 }
2153
2154 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)
2155 {
2156 INT nextIndex;
2157 INT prevCount = *pcGlyphs;
2158
2159 if (syllable->ralf >= 0)
2160 {
2161 nextIndex = apply_GSUB_feature_to_glyph(hdc, psa, psc, pwOutGlyphs, glyph_index->ralf, 1, pcGlyphs, "rphf");
2162 if (nextIndex > GSUB_E_NOGLYPH)
2163 {
2164 UpdateClusters(nextIndex, *pcGlyphs - prevCount, 1, cChars, pwLogClust);
2165 shift_syllable_glyph_indexs(glyph_index,glyph_index->ralf,*pcGlyphs - prevCount);
2166 }
2167 }
2168 }
2169
2170 static inline INT find_halant_consonant(WCHAR* pwChars, INT index, INT end, lexical_function lexical)
2171 {
2172 int i = 0;
2173 while (index + i < end-1 && !(lexical(pwChars[index+i]) == lex_Halant &&
2174 ((index + i < end-2 && lexical(pwChars[index+i]) == lex_Nukta && is_consonant(lexical(pwChars[index+i+1]))) ||
2175 is_consonant(lexical(pwChars[index+i+1])))))
2176 i++;
2177 if (index + i <= end-1)
2178 return index+i;
2179 else
2180 return -1;
2181 }
2182
2183 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)
2184 {
2185 INT index, nextIndex;
2186 INT count, g_offset=0;
2187 INT ralf = syllable->ralf;
2188
2189 count = syllable->end - syllable->base;
2190
2191 index = find_halant_consonant(&pwChars[syllable->base], 0, count, lexical);
2192
2193 while (index >= 0)
2194 {
2195 INT prevCount = *pcGlyphs;
2196 if (ralf >=0 && ralf < index)
2197 {
2198 g_offset--;
2199 ralf = -1;
2200 }
2201
2202 if (!modern)
2203 {
2204 WORD g = pwOutGlyphs[index+glyph_index->base+g_offset];
2205 pwOutGlyphs[index+glyph_index->base+g_offset] = pwOutGlyphs[index+glyph_index->base+g_offset+1];
2206 pwOutGlyphs[index+glyph_index->base+g_offset+1] = g;
2207 }
2208
2209 nextIndex = apply_GSUB_feature_to_glyph(hdc, psa, psc, pwOutGlyphs, index+glyph_index->base+g_offset, 1, pcGlyphs, feat);
2210 if (nextIndex > GSUB_E_NOGLYPH)
2211 {
2212 UpdateClusters(nextIndex, *pcGlyphs - prevCount, 1, cChars, pwLogClust);
2213 shift_syllable_glyph_indexs(glyph_index,index+glyph_index->start+g_offset, (*pcGlyphs - prevCount));
2214 g_offset += (*pcGlyphs - prevCount);
2215 }
2216 else if (!modern)
2217 {
2218 WORD g = pwOutGlyphs[index+glyph_index->base+g_offset];
2219 pwOutGlyphs[index+glyph_index->base+g_offset] = pwOutGlyphs[index+glyph_index->base+g_offset+1];
2220 pwOutGlyphs[index+glyph_index->base+g_offset+1] = g;
2221 }
2222
2223 index+=2;
2224 index = find_halant_consonant(&pwChars[syllable->base], index, count, lexical);
2225 }
2226 }
2227
2228 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)
2229 {
2230 int c;
2231 int overall_shift = 0;
2232 const GSUB_Feature *locl = (modern)?load_GSUB_feature(hdc, psa, psc, "locl"):NULL;
2233 const GSUB_Feature *nukt = load_GSUB_feature(hdc, psa, psc, "nukt");
2234 const GSUB_Feature *akhn = load_GSUB_feature(hdc, psa, psc, "akhn");
2235 const GSUB_Feature *rkrf = (modern)?load_GSUB_feature(hdc, psa, psc, "rkrf"):NULL;
2236 const GSUB_Feature *pstf = load_GSUB_feature(hdc, psa, psc, "pstf");
2237 const GSUB_Feature *vatu = (!rkrf)?load_GSUB_feature(hdc, psa, psc, "vatu"):NULL;
2238 const GSUB_Feature *cjct = (modern)?load_GSUB_feature(hdc, psa, psc, "cjct"):NULL;
2239 BOOL rphf = (load_GSUB_feature(hdc, psa, psc, "rphf") != NULL);
2240 BOOL pref = (load_GSUB_feature(hdc, psa, psc, "pref") != NULL);
2241 BOOL blwf = (load_GSUB_feature(hdc, psa, psc, "blwf") != NULL);
2242 BOOL half = (load_GSUB_feature(hdc, psa, psc, "half") != NULL);
2243 IndicSyllable glyph_indexs;
2244
2245 for (c = 0; c < syllable_count; c++)
2246 {
2247 int old_end;
2248 memcpy(&glyph_indexs, &syllables[c], sizeof(IndicSyllable));
2249 shift_syllable_glyph_indexs(&glyph_indexs, -1, overall_shift);
2250 old_end = glyph_indexs.end;
2251
2252 if (locl)
2253 {
2254 TRACE("applying feature locl\n");
2255 Apply_Indic_BasicForm(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, locl);
2256 }
2257 if (nukt)
2258 {
2259 TRACE("applying feature nukt\n");
2260 Apply_Indic_BasicForm(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, nukt);
2261 }
2262 if (akhn)
2263 {
2264 TRACE("applying feature akhn\n");
2265 Apply_Indic_BasicForm(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, akhn);
2266 }
2267
2268 if (rphf)
2269 Apply_Indic_Rphf(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs);
2270 if (rkrf)
2271 {
2272 TRACE("applying feature rkrf\n");
2273 Apply_Indic_BasicForm(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, rkrf);
2274 }
2275 if (pref)
2276 Apply_Indic_PostBase(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, modern, "pref");
2277 if (blwf)
2278 {
2279 if (!modern)
2280 Apply_Indic_PreBase(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, "blwf");
2281
2282 Apply_Indic_PostBase(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, modern, "blwf");
2283
2284 }
2285 if (half)
2286 Apply_Indic_PreBase(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, "half");
2287 if (pstf)
2288 {
2289 TRACE("applying feature pstf\n");
2290 Apply_Indic_BasicForm(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, pstf);
2291 }
2292 if (vatu)
2293 {
2294 TRACE("applying feature vatu\n");
2295 Apply_Indic_BasicForm(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, vatu);
2296 }
2297 if (cjct)
2298 {
2299 TRACE("applying feature cjct\n");
2300 Apply_Indic_BasicForm(hdc, psc, psa, pwChars, cChars, &syllables[c], pwOutGlyphs, pcGlyphs, pwLogClust, lexical, &glyph_indexs, cjct);
2301 }
2302
2303 if (second_reorder)
2304 second_reorder(pwChars, &syllables[c], pwOutGlyphs, &glyph_indexs, lexical);
2305
2306 overall_shift += glyph_indexs.end - old_end;
2307 }
2308 }
2309
2310 static inline int unicode_lex(WCHAR c)
2311 {
2312 int type;
2313
2314 if (!c) return lex_Generic;
2315 if (c == 0x200D) return lex_ZWJ;
2316 if (c == 0x200C) return lex_ZWNJ;
2317 if (c == 0x00A0) return lex_NBSP;
2318
2319 type = get_table_entry( indic_syllabic_table, c );
2320
2321 if ((type & 0x00ff) != 0x0007) type = type & 0x00ff;
2322
2323 switch( type )
2324 {
2325 case 0x0d07: /* Unknown */
2326 case 0x0e07: /* Unknwon */
2327 default: return lex_Generic;
2328 case 0x0001:
2329 case 0x0002:
2330 case 0x0011:
2331 case 0x0012:
2332 case 0x0013:
2333 case 0x0014: return lex_Modifier;
2334 case 0x0003:
2335 case 0x0009:
2336 case 0x000a:
2337 case 0x000b:
2338 case 0x000d:
2339 case 0x000e:
2340 case 0x000f:
2341 case 0x0010: return lex_Consonant;
2342 case 0x0004: return lex_Nukta;
2343 case 0x0005: return lex_Halant;
2344 case 0x0006:
2345 case 0x0008: return lex_Vowel;
2346 case 0x0007:
2347 case 0x0107: return lex_Matra_post;
2348 case 0x0207:
2349 case 0x0307: return lex_Matra_pre;
2350 case 0x0807:
2351 case 0x0907:
2352 case 0x0a07:
2353 case 0x0b07:
2354 case 0x0c07:
2355 case 0x0407: return lex_Composed_Vowel;
2356 case 0x0507: return lex_Matra_above;
2357 case 0x0607: return lex_Matra_below;
2358 case 0x000c: return lex_Ra;
2359 };
2360 }
2361
2362 static int sinhala_lex(WCHAR c)
2363 {
2364 switch (c)
2365 {
2366 case 0x0DDA:
2367 case 0x0DDD:
2368 case 0x0DDC:
2369 case 0x0DDE: return lex_Matra_post;
2370 default:
2371 return unicode_lex(c);
2372 }
2373 }
2374
2375 static const VowelComponents Sinhala_vowels[] = {
2376 {0x0DDA, {0x0DD9,0x0DDA,0x0}},
2377 {0x0DDC, {0x0DD9,0x0DDC,0x0}},
2378 {0x0DDD, {0x0DD9,0x0DDD,0x0}},
2379 {0x0DDE, {0x0DD9,0x0DDE,0x0}},
2380 {0x0000, {0x0000,0x0000,0x0}}};
2381
2382 static void ContextualShape_Sinhala(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
2383 {
2384 int cCount = cChars;
2385 int i;
2386 WCHAR *input;
2387 IndicSyllable *syllables = NULL;
2388 int syllable_count = 0;
2389
2390 if (*pcGlyphs != cChars)
2391 {
2392 ERR("Number of Glyphs and Chars need to match at the beginning\n");
2393 return;
2394 }
2395
2396 input = HeapAlloc(GetProcessHeap(),0,sizeof(WCHAR) * (cChars * 3));
2397
2398 memcpy(input, pwcChars, cChars * sizeof(WCHAR));
2399
2400 /* Step 1: Decompose multi part vowels */
2401 DecomposeVowels(hdc, input, &cCount, Sinhala_vowels);
2402
2403 TRACE("New double vowel expanded string %s (%i)\n",debugstr_wn(input,cCount),cCount);
2404
2405 /* Step 2: Reorder within Syllables */
2406 Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, sinhala_lex, Reorder_Like_Sinhala, TRUE);
2407 TRACE("reordered string %s\n",debugstr_wn(input,cCount));
2408
2409 /* Step 3: Strip dangling joiners */
2410 for (i = 0; i < cCount; i++)
2411 {
2412 if ((input[i] == 0x200D || input[i] == 0x200C) &&
2413 (i == 0 || input[i-1] == 0x0020 || i == cCount-1 || input[i+1] == 0x0020))
2414 input[i] = 0x0020;
2415 }
2416
2417 /* Step 4: Base Form application to syllables */
2418 GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
2419 *pcGlyphs = cCount;
2420 ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, sinhala_lex, NULL, TRUE);
2421
2422 HeapFree(GetProcessHeap(),0,input);
2423 HeapFree(GetProcessHeap(),0,syllables);
2424 }
2425
2426 static int devanagari_lex(WCHAR c)
2427 {
2428 switch (c)
2429 {
2430 case 0x0930: return lex_Ra;
2431 default:
2432 return unicode_lex(c);
2433 }
2434 }
2435
2436 static const ConsonantComponents Devanagari_consonants[] ={
2437 {{0x0928, 0x093C, 0x00000}, 0x0929},
2438 {{0x0930, 0x093C, 0x00000}, 0x0931},
2439 {{0x0933, 0x093C, 0x00000}, 0x0934},
2440 {{0x0915, 0x093C, 0x00000}, 0x0958},
2441 {{0x0916, 0x093C, 0x00000}, 0x0959},
2442 {{0x0917, 0x093C, 0x00000}, 0x095A},
2443 {{0x091C, 0x093C, 0x00000}, 0x095B},
2444 {{0x0921, 0x093C, 0x00000}, 0x095C},
2445 {{0x0922, 0x093C, 0x00000}, 0x095D},
2446 {{0x092B, 0x093C, 0x00000}, 0x095E},
2447 {{0x092F, 0x093C, 0x00000}, 0x095F}};
2448
2449 static void ContextualShape_Devanagari(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
2450 {
2451 int cCount = cChars;
2452 WCHAR *input;
2453 IndicSyllable *syllables = NULL;
2454 int syllable_count = 0;
2455 BOOL modern = get_GSUB_Indic2(psa, psc);
2456
2457 if (*pcGlyphs != cChars)
2458 {
2459 ERR("Number of Glyphs and Chars need to match at the beginning\n");
2460 return;
2461 }
2462
2463 input = HeapAlloc(GetProcessHeap(), 0, cChars * sizeof(WCHAR));
2464 memcpy(input, pwcChars, cChars * sizeof(WCHAR));
2465
2466 /* Step 1: Compose Consonant and Nukta */
2467 ComposeConsonants(hdc, input, &cCount, Devanagari_consonants);
2468 TRACE("New composed string %s (%i)\n",debugstr_wn(input,cCount),cCount);
2469
2470 /* Step 2: Reorder within Syllables */
2471 Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, devanagari_lex, Reorder_Like_Devanagari, modern);
2472 TRACE("reordered string %s\n",debugstr_wn(input,cCount));
2473 GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
2474 *pcGlyphs = cCount;
2475
2476 /* Step 3: Base Form application to syllables */
2477 ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, devanagari_lex, NULL, modern);
2478
2479 HeapFree(GetProcessHeap(),0,input);
2480 HeapFree(GetProcessHeap(),0,syllables);
2481 }
2482
2483 static int bengali_lex(WCHAR c)
2484 {
2485 switch (c)
2486 {
2487 case 0x09B0: return lex_Ra;
2488 default:
2489 return unicode_lex(c);
2490 }
2491 }
2492
2493 static const VowelComponents Bengali_vowels[] = {
2494 {0x09CB, {0x09C7,0x09BE,0x0000}},
2495 {0x09CC, {0x09C7,0x09D7,0x0000}},
2496 {0x0000, {0x0000,0x0000,0x0000}}};
2497
2498 static const ConsonantComponents Bengali_consonants[] = {
2499 {{0x09A4,0x09CD,0x200D}, 0x09CE},
2500 {{0x09A1,0x09BC,0x0000}, 0x09DC},
2501 {{0x09A2,0x09BC,0x0000}, 0x09DD},
2502 {{0x09AF,0x09BC,0x0000}, 0x09DF},
2503 {{0x0000,0x0000,0x0000}, 0x0000}};
2504
2505 static void ContextualShape_Bengali(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
2506 {
2507 int cCount = cChars;
2508 WCHAR *input;
2509 IndicSyllable *syllables = NULL;
2510 int syllable_count = 0;
2511 BOOL modern = get_GSUB_Indic2(psa, psc);
2512
2513 if (*pcGlyphs != cChars)
2514 {
2515 ERR("Number of Glyphs and Chars need to match at the beginning\n");
2516 return;
2517 }
2518
2519 input = HeapAlloc(GetProcessHeap(), 0, (cChars * 2) * sizeof(WCHAR));
2520 memcpy(input, pwcChars, cChars * sizeof(WCHAR));
2521
2522 /* Step 1: Decompose Vowels and Compose Consonents */
2523 DecomposeVowels(hdc, input, &cCount, Bengali_vowels);
2524 ComposeConsonants(hdc, input, &cCount, Bengali_consonants);
2525 TRACE("New composed string %s (%i)\n",debugstr_wn(input,cCount),cCount);
2526
2527 /* Step 2: Reorder within Syllables */
2528 Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, bengali_lex, Reorder_Like_Bengali, modern);
2529 TRACE("reordered string %s\n",debugstr_wn(input,cCount));
2530 GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
2531 *pcGlyphs = cCount;
2532
2533 /* Step 3: Initial form is only applied to the beginning of words */
2534 for (cCount = cCount - 1 ; cCount >= 0; cCount --)
2535 {
2536 if (cCount == 0 || input[cCount] == 0x0020) /* space */
2537 {
2538 int index = cCount;
2539 int gCount = 1;
2540 if (index > 0) index++;
2541
2542 apply_GSUB_feature_to_glyph(hdc, psa, psc, &pwOutGlyphs[index], 0, 1, &gCount, "init");
2543 }
2544 }
2545
2546 /* Step 4: Base Form application to syllables */
2547 ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, bengali_lex, NULL, modern);
2548
2549 HeapFree(GetProcessHeap(),0,input);
2550 HeapFree(GetProcessHeap(),0,syllables);
2551 }
2552
2553 static int gurmukhi_lex(WCHAR c)
2554 {
2555 return unicode_lex(c);
2556 }
2557
2558 static const ConsonantComponents Gurmukhi_consonants[] = {
2559 {{0x0A32,0x0A3C,0x0000}, 0x0A33},
2560 {{0x0A38,0x0A3C,0x0000}, 0x0A36},
2561 {{0x0A16,0x0A3C,0x0000}, 0x0A59},
2562 {{0x0A17,0x0A3C,0x0000}, 0x0A5A},
2563 {{0x0A1C,0x0A3C,0x0000}, 0x0A5B},
2564 {{0x0A2B,0x0A3C,0x0000}, 0x0A5E},
2565 {{0x0000,0x0000,0x0000}, 0x0000}};
2566
2567 static void ContextualShape_Gurmukhi(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
2568 {
2569 int cCount = cChars;
2570 WCHAR *input;
2571 IndicSyllable *syllables = NULL;
2572 int syllable_count = 0;
2573 BOOL modern = get_GSUB_Indic2(psa, psc);
2574
2575 if (*pcGlyphs != cChars)
2576 {
2577 ERR("Number of Glyphs and Chars need to match at the beginning\n");
2578 return;
2579 }
2580
2581 input = HeapAlloc(GetProcessHeap(), 0, cChars * sizeof(WCHAR));
2582 memcpy(input, pwcChars, cChars * sizeof(WCHAR));
2583
2584 /* Step 1: Compose Consonents */
2585 ComposeConsonants(hdc, input, &cCount, Gurmukhi_consonants);
2586 TRACE("New composed string %s (%i)\n",debugstr_wn(input,cCount),cCount);
2587
2588 /* Step 2: Reorder within Syllables */
2589 Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, gurmukhi_lex, Reorder_Like_Bengali, modern);
2590 TRACE("reordered string %s\n",debugstr_wn(input,cCount));
2591 GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
2592 *pcGlyphs = cCount;
2593
2594 /* Step 3: Base Form application to syllables */
2595 ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, gurmukhi_lex, NULL, modern);
2596
2597 HeapFree(GetProcessHeap(),0,input);
2598 HeapFree(GetProcessHeap(),0,syllables);
2599 }
2600
2601 static int gujarati_lex(WCHAR c)
2602 {
2603 switch (c)
2604 {
2605 case 0x0AB0: return lex_Ra;
2606 default:
2607 return unicode_lex(c);
2608 }
2609 }
2610
2611 static void ContextualShape_Gujarati(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
2612 {
2613 int cCount = cChars;
2614 WCHAR *input;
2615 IndicSyllable *syllables = NULL;
2616 int syllable_count = 0;
2617 BOOL modern = get_GSUB_Indic2(psa, psc);
2618
2619 if (*pcGlyphs != cChars)
2620 {
2621 ERR("Number of Glyphs and Chars need to match at the beginning\n");
2622 return;
2623 }
2624
2625 input = HeapAlloc(GetProcessHeap(), 0, cChars * sizeof(WCHAR));
2626 memcpy(input, pwcChars, cChars * sizeof(WCHAR));
2627
2628 /* Step 1: Reorder within Syllables */
2629 Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, gujarati_lex, Reorder_Like_Devanagari, modern);
2630 TRACE("reordered string %s\n",debugstr_wn(input,cCount));
2631 GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
2632 *pcGlyphs = cCount;
2633
2634 /* Step 2: Base Form application to syllables */
2635 ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, gujarati_lex, NULL, modern);
2636
2637 HeapFree(GetProcessHeap(),0,input);
2638 HeapFree(GetProcessHeap(),0,syllables);
2639 }
2640
2641 static int oriya_lex(WCHAR c)
2642 {
2643 switch (c)
2644 {
2645 case 0x0B30: return lex_Ra;
2646 default:
2647 return unicode_lex(c);
2648 }
2649 }
2650
2651 static const VowelComponents Oriya_vowels[] = {
2652 {0x0B48, {0x0B47,0x0B56,0x0000}},
2653 {0x0B4B, {0x0B47,0x0B3E,0x0000}},
2654 {0x0B4C, {0x0B47,0x0B57,0x0000}},
2655 {0x0000, {0x0000,0x0000,0x0000}}};
2656
2657 static const ConsonantComponents Oriya_consonants[] = {
2658 {{0x0B21,0x0B3C,0x0000}, 0x0B5C},
2659 {{0x0B22,0x0B3C,0x0000}, 0x0B5D},
2660 {{0x0000,0x0000,0x0000}, 0x0000}};
2661
2662 static void ContextualShape_Oriya(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
2663 {
2664 int cCount = cChars;
2665 WCHAR *input;
2666 IndicSyllable *syllables = NULL;
2667 int syllable_count = 0;
2668 BOOL modern = get_GSUB_Indic2(psa, psc);
2669
2670 if (*pcGlyphs != cChars)
2671 {
2672 ERR("Number of Glyphs and Chars need to match at the beginning\n");
2673 return;
2674 }
2675
2676 input = HeapAlloc(GetProcessHeap(), 0, (cChars*2) * sizeof(WCHAR));
2677 memcpy(input, pwcChars, cChars * sizeof(WCHAR));
2678
2679 /* Step 1: Decompose Vowels and Compose Consonents */
2680 DecomposeVowels(hdc, input, &cCount, Oriya_vowels);
2681 ComposeConsonants(hdc, input, &cCount, Oriya_consonants);
2682 TRACE("New composed string %s (%i)\n",debugstr_wn(input,cCount),cCount);
2683
2684 /* Step 2: Reorder within Syllables */
2685 Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, oriya_lex, Reorder_Like_Bengali, modern);
2686 TRACE("reordered string %s\n",debugstr_wn(input,cCount));
2687 GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
2688 *pcGlyphs = cCount;
2689
2690 /* Step 3: Base Form application to syllables */
2691 ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, oriya_lex, NULL, modern);
2692
2693 HeapFree(GetProcessHeap(),0,input);
2694 HeapFree(GetProcessHeap(),0,syllables);
2695 }
2696
2697 static int tamil_lex(WCHAR c)
2698 {
2699 return unicode_lex(c);
2700 }
2701
2702 static const VowelComponents Tamil_vowels[] = {
2703 {0x0BCA, {0x0BC6,0x0BBE,0x0000}},
2704 {0x0BCB, {0x0BC7,0x0BBE,0x0000}},
2705 {0x0BCB, {0x0BC6,0x0BD7,0x0000}},
2706 {0x0000, {0x0000,0x0000,0x0000}}};
2707
2708 static const ConsonantComponents Tamil_consonants[] = {
2709 {{0x0B92,0x0BD7,0x0000}, 0x0B94},
2710 {{0x0000,0x0000,0x0000}, 0x0000}};
2711
2712 static void ContextualShape_Tamil(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
2713 {
2714 int cCount = cChars;
2715 WCHAR *input;
2716 IndicSyllable *syllables = NULL;
2717 int syllable_count = 0;
2718 BOOL modern = get_GSUB_Indic2(psa, psc);
2719
2720 if (*pcGlyphs != cChars)
2721 {
2722 ERR("Number of Glyphs and Chars need to match at the beginning\n");
2723 return;
2724 }
2725
2726 input = HeapAlloc(GetProcessHeap(), 0, (cChars*2) * sizeof(WCHAR));
2727 memcpy(input, pwcChars, cChars * sizeof(WCHAR));
2728
2729 /* Step 1: Decompose Vowels and Compose Consonents */
2730 DecomposeVowels(hdc, input, &cCount, Tamil_vowels);
2731 ComposeConsonants(hdc, input, &cCount, Tamil_consonants);
2732 TRACE("New composed string %s (%i)\n",debugstr_wn(input,cCount),cCount);
2733
2734 /* Step 2: Reorder within Syllables */
2735 Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, tamil_lex, Reorder_Like_Bengali, modern);
2736 TRACE("reordered string %s\n",debugstr_wn(input,cCount));
2737 GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
2738 *pcGlyphs = cCount;
2739
2740 /* Step 3: Base Form application to syllables */
2741 ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, tamil_lex, SecondReorder_Like_Tamil, modern);
2742
2743 HeapFree(GetProcessHeap(),0,input);
2744 HeapFree(GetProcessHeap(),0,syllables);
2745 }
2746
2747 static int telugu_lex(WCHAR c)
2748 {
2749 switch (c)
2750 {
2751 case 0x0C43:
2752 case 0x0C44: return lex_Modifier;
2753 default:
2754 return unicode_lex(c);
2755 }
2756 }
2757
2758 static const VowelComponents Telugu_vowels[] = {
2759 {0x0C48, {0x0C46,0x0C56,0x0000}},
2760 {0x0000, {0x0000,0x0000,0x0000}}};
2761
2762 static void ContextualShape_Telugu(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
2763 {
2764 int cCount = cChars;
2765 WCHAR *input;
2766 IndicSyllable *syllables = NULL;
2767 int syllable_count = 0;
2768 BOOL modern = get_GSUB_Indic2(psa, psc);
2769
2770 if (*pcGlyphs != cChars)
2771 {
2772 ERR("Number of Glyphs and Chars need to match at the beginning\n");
2773 return;
2774 }
2775
2776 input = HeapAlloc(GetProcessHeap(), 0, (cChars*2) * sizeof(WCHAR));
2777 memcpy(input, pwcChars, cChars * sizeof(WCHAR));
2778
2779 /* Step 1: Decompose Vowels */
2780 DecomposeVowels(hdc, input, &cCount, Telugu_vowels);
2781 TRACE("New composed string %s (%i)\n",debugstr_wn(input,cCount),cCount);
2782
2783 /* Step 2: Reorder within Syllables */
2784 Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, telugu_lex, Reorder_Like_Bengali, modern);
2785 TRACE("reordered string %s\n",debugstr_wn(input,cCount));
2786 GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
2787 *pcGlyphs = cCount;
2788
2789 /* Step 3: Base Form application to syllables */
2790 ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, telugu_lex, SecondReorder_Like_Telugu, modern);
2791
2792 HeapFree(GetProcessHeap(),0,input);
2793 HeapFree(GetProcessHeap(),0,syllables);
2794 }
2795
2796 static int kannada_lex(WCHAR c)
2797 {
2798 switch (c)
2799 {
2800 case 0x0CB0: return lex_Ra;
2801 default:
2802 return unicode_lex(c);
2803 }
2804 }
2805
2806 static const VowelComponents Kannada_vowels[] = {
2807 {0x0CC0, {0x0CBF,0x0CD5,0x0000}},
2808 {0x0CC7, {0x0CC6,0x0CD5,0x0000}},
2809 {0x0CC8, {0x0CC6,0x0CD6,0x0000}},
2810 {0x0CCA, {0x0CC6,0x0CC2,0x0000}},
2811 {0x0CCB, {0x0CC6,0x0CC2,0x0CD5}},
2812 {0x0000, {0x0000,0x0000,0x0000}}};
2813
2814 static void ContextualShape_Kannada(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
2815 {
2816 int cCount = cChars;
2817 WCHAR *input;
2818 IndicSyllable *syllables = NULL;
2819 int syllable_count = 0;
2820 BOOL modern = get_GSUB_Indic2(psa, psc);
2821
2822 if (*pcGlyphs != cChars)
2823 {
2824 ERR("Number of Glyphs and Chars need to match at the beginning\n");
2825 return;
2826 }
2827
2828 input = HeapAlloc(GetProcessHeap(), 0, (cChars*3) * sizeof(WCHAR));
2829 memcpy(input, pwcChars, cChars * sizeof(WCHAR));
2830
2831 /* Step 1: Decompose Vowels */
2832 DecomposeVowels(hdc, input, &cCount, Kannada_vowels);
2833 TRACE("New composed string %s (%i)\n",debugstr_wn(input,cCount),cCount);
2834
2835 /* Step 2: Reorder within Syllables */
2836 Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, kannada_lex, Reorder_Like_Kannada, modern);
2837 TRACE("reordered string %s\n",debugstr_wn(input,cCount));
2838 GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
2839 *pcGlyphs = cCount;
2840
2841 /* Step 3: Base Form application to syllables */
2842 ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, kannada_lex, SecondReorder_Like_Telugu, modern);
2843
2844 HeapFree(GetProcessHeap(),0,input);
2845 HeapFree(GetProcessHeap(),0,syllables);
2846 }
2847
2848 static int malayalam_lex(WCHAR c)
2849 {
2850 return unicode_lex(c);
2851 }
2852
2853 static const VowelComponents Malayalam_vowels[] = {
2854 {0x0D4A, {0x0D46,0x0D3E,0x0000}},
2855 {0x0D4B, {0x0D47,0x0D3E,0x0000}},
2856 {0x0D4C, {0x0D46,0x0D57,0x0000}},
2857 {0x0000, {0x0000,0x0000,0x0000}}};
2858
2859 static void ContextualShape_Malayalam(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
2860 {
2861 int cCount = cChars;
2862 WCHAR *input;
2863 IndicSyllable *syllables = NULL;
2864 int syllable_count = 0;
2865 BOOL modern = get_GSUB_Indic2(psa, psc);
2866
2867 if (*pcGlyphs != cChars)
2868 {
2869 ERR("Number of Glyphs and Chars need to match at the beginning\n");
2870 return;
2871 }
2872
2873 input = HeapAlloc(GetProcessHeap(), 0, (cChars*2) * sizeof(WCHAR));
2874 memcpy(input, pwcChars, cChars * sizeof(WCHAR));
2875
2876 /* Step 1: Decompose Vowels */
2877 DecomposeVowels(hdc, input, &cCount, Malayalam_vowels);
2878 TRACE("New composed string %s (%i)\n",debugstr_wn(input,cCount),cCount);
2879
2880 /* Step 2: Reorder within Syllables */
2881 Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, malayalam_lex, Reorder_Like_Devanagari, modern);
2882 TRACE("reordered string %s\n",debugstr_wn(input,cCount));
2883 GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
2884 *pcGlyphs = cCount;
2885
2886 /* Step 3: Base Form application to syllables */
2887 ShapeIndicSyllables(hdc, psc, psa, input, cChars, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, malayalam_lex, SecondReorder_Like_Tamil, modern);
2888
2889 HeapFree(GetProcessHeap(),0,input);
2890 HeapFree(GetProcessHeap(),0,syllables);
2891 }
2892
2893 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)
2894 {
2895 int i,k;
2896
2897 for (i = 0; i < cGlyphs; i++)
2898 {
2899 int char_index[20];
2900 int char_count = 0;
2901
2902 for (k = 0; k < cChars; k++)
2903 {
2904 if (pwLogClust[k] == i)
2905 {
2906 char_index[char_count] = k;
2907 char_count++;
2908 }
2909 }
2910
2911 if (char_count == 0)
2912 {
2913 FIXME("No chars in this glyph? Must be an error\n");
2914 continue;
2915 }
2916
2917 if (char_count ==1 && pwcChars[char_index[0]] == 0x0020) /* space */
2918 {
2919 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_BLANK;
2920 pCharProp[char_index[0]].fCanGlyphAlone = 1;
2921 }
2922 else
2923 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_CHARACTER;
2924 }
2925
2926 GDEF_UpdateGlyphProps(hdc, psc, pwGlyphs, cGlyphs, pwLogClust, pGlyphProp);
2927 UpdateClustersFromGlyphProp(cGlyphs, cChars, pwLogClust, pGlyphProp);
2928 }
2929
2930 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 )
2931 {
2932 int i,k;
2933 int initGlyph, finaGlyph;
2934 INT dirR, dirL;
2935 BYTE *spaces;
2936
2937 spaces = HeapAlloc(GetProcessHeap(),0,cGlyphs);
2938 memset(spaces,0,cGlyphs);
2939
2940 if (!psa->fLogicalOrder && psa->fRTL)
2941 {
2942 initGlyph = cGlyphs-1;
2943 finaGlyph = 0;
2944 dirR = 1;
2945 dirL = -1;
2946 }
2947 else
2948 {
2949 initGlyph = 0;
2950 finaGlyph = cGlyphs-1;
2951 dirR = -1;
2952 dirL = 1;
2953 }
2954
2955 for (i = 0; i < cGlyphs; i++)
2956 {
2957 for (k = 0; k < cChars; k++)
2958 if (pwLogClust[k] == i)
2959 {
2960 if (pwcChars[k] == 0x0020)
2961 spaces[i] = 1;
2962 }
2963 }
2964
2965 for (i = 0; i < cGlyphs; i++)
2966 {
2967 int char_index[20];
2968 int char_count = 0;
2969 BOOL isInit, isFinal;
2970
2971 for (k = 0; k < cChars; k++)
2972 {
2973 if (pwLogClust[k] == i)
2974 {
2975 char_index[char_count] = k;
2976 char_count++;
2977 }
2978 }
2979
2980 isInit = (i == initGlyph || (i+dirR > 0 && i+dirR < cGlyphs && spaces[i+dirR]));
2981 isFinal = (i == finaGlyph || (i+dirL > 0 && i+dirL < cGlyphs && spaces[i+dirL]));
2982
2983 if (char_count == 0)
2984 {
2985 FIXME("No chars in this glyph? Must be an error\n");
2986 continue;
2987 }
2988
2989 if (char_count == 1)
2990 {
2991 if (pwcChars[char_index[0]] == 0x0020) /* space */
2992 {
2993 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_BLANK;
2994 pCharProp[char_index[0]].fCanGlyphAlone = 1;
2995 }
2996 else if (pwcChars[char_index[0]] == 0x0640) /* kashida */
2997 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_KASHIDA;
2998 else if (pwcChars[char_index[0]] == 0x0633) /* SEEN */
2999 {
3000 if (!isInit && !isFinal)
3001 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_SEEN_M;
3002 else if (isInit)
3003 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_SEEN;
3004 else
3005 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_NONE;
3006 }
3007 else if (!isInit)
3008 {
3009 if (pwcChars[char_index[0]] == 0x0628 ) /* BA */
3010 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_BA;
3011 else if (pwcChars[char_index[0]] == 0x0631 ) /* RA */
3012 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_RA;
3013 else if (pwcChars[char_index[0]] == 0x0647 ) /* HA */
3014 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_HA;
3015 else if ((pwcChars[char_index[0]] == 0x0627 || pwcChars[char_index[0]] == 0x0625 || pwcChars[char_index[0]] == 0x0623 || pwcChars[char_index[0]] == 0x0622) ) /* alef-like */
3016 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_ALEF;
3017 else
3018 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_NONE;
3019 }
3020 else if (!isInit && !isFinal)
3021 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_NORMAL;
3022 else
3023 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_NONE;
3024 }
3025 else if (char_count == 2)
3026 {
3027 if ((pwcChars[char_index[0]] == 0x0628 && pwcChars[char_index[1]]== 0x0631) || (pwcChars[char_index[0]] == 0x0631 && pwcChars[char_index[1]]== 0x0628)) /* BA+RA */
3028 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_BARA;
3029 else if (!isInit)
3030 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_NORMAL;
3031 else
3032 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_NONE;
3033 }
3034 else if (!isInit && !isFinal)
3035 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_ARABIC_NORMAL;
3036 else
3037 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_NONE;
3038 }
3039
3040 GDEF_UpdateGlyphProps(hdc, psc, pwGlyphs, cGlyphs, pwLogClust, pGlyphProp);
3041 UpdateClustersFromGlyphProp(cGlyphs, cChars, pwLogClust, pGlyphProp);
3042 HeapFree(GetProcessHeap(),0,spaces);
3043 }
3044
3045 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 )
3046 {
3047 int i,k;
3048 int finaGlyph;
3049 INT dirL;
3050 BYTE *spaces;
3051
3052 spaces = HeapAlloc(GetProcessHeap(),0,cGlyphs);
3053 memset(spaces,0,cGlyphs);
3054
3055 if (!psa->fLogicalOrder && psa->fRTL)
3056 {
3057 finaGlyph = 0;
3058 dirL = -1;
3059 }
3060 else
3061 {
3062 finaGlyph = cGlyphs-1;
3063 dirL = 1;
3064 }
3065
3066 for (i = 0; i < cGlyphs; i++)
3067 {
3068 for (k = 0; k < cChars; k++)
3069 if (pwLogClust[k] == i)
3070 {
3071 if (pwcChars[k] == 0x0020)
3072 spaces[i] = 1;
3073 }
3074 }
3075
3076 for (i = 0; i < cGlyphs; i++)
3077 {
3078 int char_index[20];
3079 int char_count = 0;
3080
3081 for (k = 0; k < cChars; k++)
3082 {
3083 if (pwLogClust[k] == i)
3084 {
3085 char_index[char_count] = k;
3086 char_count++;
3087 }
3088 }
3089
3090 if (char_count == 0)
3091 {
3092 FIXME("No chars in this glyph? Must be an error\n");
3093 continue;
3094 }
3095
3096 if (char_count ==1 && pwcChars[char_index[0]] == 0x0020) /* space */
3097 {
3098 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_CHARACTER;
3099 pCharProp[char_index[0]].fCanGlyphAlone = 1;
3100 }
3101 else if (i == finaGlyph)
3102 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_NONE;
3103 else
3104 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_CHARACTER;
3105 }
3106
3107 HeapFree(GetProcessHeap(),0,spaces);
3108 GDEF_UpdateGlyphProps(hdc, psc, pwGlyphs, cGlyphs, pwLogClust, pGlyphProp);
3109 UpdateClustersFromGlyphProp(cGlyphs, cChars, pwLogClust, pGlyphProp);
3110
3111 /* Do not allow justification between marks and their base */
3112 for (i = 0; i < cGlyphs; i++)
3113 {
3114 if (!pGlyphProp[i].sva.fClusterStart)
3115 pGlyphProp[i-dirL].sva.uJustification = SCRIPT_JUSTIFY_NONE;
3116 }
3117 }
3118
3119 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)
3120 {
3121 int i,k;
3122
3123 for (i = 0; i < cGlyphs; i++)
3124 {
3125 int char_index[20];
3126 int char_count = 0;
3127
3128 for (k = 0; k < cChars; k++)
3129 {
3130 if (pwLogClust[k] == i)
3131 {
3132 char_index[char_count] = k;
3133 char_count++;
3134 }
3135 }
3136
3137 if (char_count == 0)
3138 {
3139 FIXME("No chars in this glyph? Must be an error\n");
3140 continue;
3141 }
3142
3143 if (char_count ==1 && pwcChars[char_index[0]] == 0x0020) /* space */
3144 {
3145 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_CHARACTER;
3146 pCharProp[char_index[0]].fCanGlyphAlone = 1;
3147 }
3148 else
3149 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_NONE;
3150 }
3151 GDEF_UpdateGlyphProps(hdc, psc, pwGlyphs, cGlyphs, pwLogClust, pGlyphProp);
3152 UpdateClustersFromGlyphProp(cGlyphs, cChars, pwLogClust, pGlyphProp);
3153 }
3154
3155 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)
3156 {
3157 int i,k;
3158
3159 for (i = 0; i < cGlyphs; i++)
3160 {
3161 int char_index[20];
3162 int char_count = 0;
3163
3164 for (k = 0; k < cChars; k++)
3165 {
3166 if (pwLogClust[k] == i)
3167 {
3168 char_index[char_count] = k;
3169 char_count++;
3170 }
3171 }
3172
3173 if (char_count == 0)
3174 {
3175 FIXME("No chars in this glyph? Must be an error\n");
3176 continue;
3177 }
3178
3179 if (char_count ==1 && pwcChars[char_index[0]] == 0x0020) /* space */
3180 {
3181 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_BLANK;
3182 pCharProp[char_index[0]].fCanGlyphAlone = 1;
3183 }
3184 else
3185 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_NONE;
3186 }
3187 GDEF_UpdateGlyphProps(hdc, psc, pwGlyphs, cGlyphs, pwLogClust, pGlyphProp);
3188 UpdateClustersFromGlyphProp(cGlyphs, cChars, pwLogClust, pGlyphProp);
3189
3190 /* Tibeten script does not set sva.fDiacritic or sva.fZeroWidth */
3191 for (i = 0; i < cGlyphs; i++)
3192 {
3193 if (!pGlyphProp[i].sva.fClusterStart)
3194 {
3195 pGlyphProp[i].sva.fDiacritic = 0;
3196 pGlyphProp[i].sva.fZeroWidth = 0;
3197 }
3198 }
3199 }
3200
3201 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)
3202 {
3203 int i,k;
3204
3205 for (i = 0; i < cGlyphs; i++)
3206 {
3207 int char_index[20];
3208 int char_count = 0;
3209
3210 for (k = 0; k < cChars; k++)
3211 {
3212 if (pwLogClust[k] == i)
3213 {
3214 char_index[char_count] = k;
3215 char_count++;
3216 }
3217 }
3218
3219 if (char_count == 0)
3220 {
3221 FIXME("No chars in this glyph? Must be an error\n");
3222 continue;
3223 }
3224
3225 if (char_count ==1 && pwcChars[char_index[0]] == 0x0020) /* space */
3226 {
3227 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_BLANK;
3228 pCharProp[char_index[0]].fCanGlyphAlone = 1;
3229 }
3230 else
3231 pGlyphProp[i].sva.uJustification = SCRIPT_JUSTIFY_NONE;
3232
3233 pGlyphProp[i].sva.fClusterStart = 0;
3234 for (k = 0; k < char_count && !pGlyphProp[i].sva.fClusterStart; k++)
3235 switch (lexical(pwcChars[char_index[k]]))
3236 {
3237 case lex_Matra_pre:
3238 case lex_Matra_post:
3239 case lex_Matra_above:
3240 case lex_Matra_below:
3241 case lex_Modifier:
3242 break;
3243 default:
3244 pGlyphProp[i].sva.fClusterStart = 1;
3245 break;
3246 }
3247 }
3248 UpdateClustersFromGlyphProp(cGlyphs, cChars, pwLogClust, pGlyphProp);
3249 }
3250
3251 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 )
3252 {
3253 ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, devanagari_lex);
3254 }
3255
3256 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 )
3257 {
3258 ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, bengali_lex);
3259 }
3260
3261 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 )
3262 {
3263 ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, gurmukhi_lex);
3264 }
3265
3266 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 )
3267 {
3268 ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, gujarati_lex);
3269 }
3270
3271 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 )
3272 {
3273 ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, oriya_lex);
3274 }
3275
3276 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 )
3277 {
3278 ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, tamil_lex);
3279 }
3280
3281 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 )
3282 {
3283 ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, telugu_lex);
3284 }
3285
3286 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 )
3287 {
3288 ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, kannada_lex);
3289 }
3290
3291 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 )
3292 {
3293 ShapeCharGlyphProp_BaseIndic(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp, malayalam_lex);
3294 }
3295
3296 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)
3297 {
3298 if (ShapingData[psa->eScript].charGlyphPropProc)
3299 ShapingData[psa->eScript].charGlyphPropProc(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp);
3300 else
3301 ShapeCharGlyphProp_Default(hdc, psc, psa, pwcChars, cChars, pwGlyphs, cGlyphs, pwLogClust, pCharProp, pGlyphProp);
3302 }
3303
3304 void SHAPE_ContextualShaping(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
3305 {
3306 if (ShapingData[psa->eScript].contextProc)
3307 ShapingData[psa->eScript].contextProc(hdc, psc, psa, pwcChars, cChars, pwOutGlyphs, pcGlyphs, cMaxGlyphs, pwLogClust);
3308 }
3309
3310 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)
3311 {
3312 int i;
3313 INT dirL;
3314
3315 if (!rpRangeProperties)
3316 return;
3317
3318 if (!psc->GSUB_Table)
3319 psc->GSUB_Table = load_gsub_table(hdc);
3320
3321 if (!psc->GSUB_Table)
3322 return;
3323
3324 if (!psa->fLogicalOrder && psa->fRTL)
3325 dirL = -1;
3326 else
3327 dirL = 1;
3328
3329 for (i = 0; i < rpRangeProperties->cotfRecords; i++)
3330 {
3331 if (rpRangeProperties->potfRecords[i].lParameter > 0)
3332 apply_GSUB_feature(hdc, psa, psc, pwOutGlyphs, dirL, pcGlyphs, cChars, (const char*)&rpRangeProperties->potfRecords[i].tagFeature, pwLogClust);
3333 }
3334 }
3335
3336 void SHAPE_ApplyDefaultOpentypeFeatures(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, INT cChars, WORD *pwLogClust)
3337 {
3338 const TEXTRANGE_PROPERTIES *rpRangeProperties;
3339 rpRangeProperties = &ShapingData[psa->eScript].defaultTextRange;
3340
3341 SHAPE_ApplyOpenTypeFeatures(hdc, psc, psa, pwOutGlyphs, pcGlyphs, cMaxGlyphs, cChars, rpRangeProperties, pwLogClust);
3342 }
3343
3344 HRESULT SHAPE_CheckFontForRequiredFeatures(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa)
3345 {
3346 const GSUB_Feature *feature;
3347 int i;
3348
3349 if (!ShapingData[psa->eScript].requiredFeatures)
3350 return S_OK;
3351
3352 if (!psc->GSUB_Table)
3353 psc->GSUB_Table = load_gsub_table(hdc);
3354
3355 /* we need to have at least one of the required features */
3356 i = 0;
3357 while (ShapingData[psa->eScript].requiredFeatures[i])
3358 {
3359 feature = load_GSUB_feature(hdc, psa, psc, ShapingData[psa->eScript].requiredFeatures[i]);
3360 if (feature)
3361 return S_OK;
3362 i++;
3363 }
3364
3365 return USP_E_SCRIPT_NOT_IN_FONT;
3366 }
Maarten's multimedia branch