git.oblomov.eu Git - wine/blob - dlls/usp10/opentype.c

   1 /*
   2  * Opentype font interfaces for the Uniscribe Script Processor (usp10.dll)
   3  *
   4  * Copyright 2012 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 #include <stdlib.h>
  23
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #include "wingdi.h"
  27 #include "winuser.h"
  28 #include "winnls.h"
  29 #include "usp10.h"
  30 #include "winternl.h"
  31
  32 #include "usp10_internal.h"
  33
  34 #include "wine/debug.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(uniscribe);
  37
  38 #ifdef WORDS_BIGENDIAN
  39 #define GET_BE_WORD(x) (x)
  40 #define GET_BE_DWORD(x) (x)
  41 #else
  42 #define GET_BE_WORD(x) RtlUshortByteSwap(x)
  43 #define GET_BE_DWORD(x) RtlUlongByteSwap(x)
  44 #endif
  45
  46 #define round(x) (((x) < 0) ? (int)((x) - 0.5) : (int)((x) + 0.5))
  47
  48 /* These are all structures needed for the cmap format 12 table */
  49 #define CMAP_TAG MS_MAKE_TAG('c', 'm', 'a', 'p')
  50
  51 typedef struct {
  52     WORD platformID;
  53     WORD encodingID;
  54     DWORD offset;
  55 } CMAP_EncodingRecord;
  56
  57 typedef struct {
  58     WORD version;
  59     WORD numTables;
  60     CMAP_EncodingRecord tables[1];
  61 } CMAP_Header;
  62
  63 typedef struct {
  64     DWORD startCharCode;
  65     DWORD endCharCode;
  66     DWORD startGlyphID;
  67 } CMAP_SegmentedCoverage_group;
  68
  69 typedef struct {
  70     WORD format;
  71     WORD reserved;
  72     DWORD length;
  73     DWORD language;
  74     DWORD nGroups;
  75     CMAP_SegmentedCoverage_group groups[1];
  76 } CMAP_SegmentedCoverage;
  77
  78 /* These are all structures needed for the GDEF table */
  79 enum {BaseGlyph=1, LigatureGlyph, MarkGlyph, ComponentGlyph};
  80
  81 typedef struct {
  82     DWORD Version;
  83     WORD GlyphClassDef;
  84     WORD AttachList;
  85     WORD LigCaretList;
  86     WORD MarkAttachClassDef;
  87 } GDEF_Header;
  88
  89 typedef struct {
  90     WORD ClassFormat;
  91     WORD StartGlyph;
  92     WORD GlyphCount;
  93     WORD ClassValueArray[1];
  94 } OT_ClassDefFormat1;
  95
  96 typedef struct {
  97     WORD Start;
  98     WORD End;
  99     WORD Class;
 100 } OT_ClassRangeRecord;
 101
 102 typedef struct {
 103     WORD ClassFormat;
 104     WORD ClassRangeCount;
 105     OT_ClassRangeRecord ClassRangeRecord[1];
 106 } OT_ClassDefFormat2;
 107
 108 /* These are all structures needed for the GSUB table */
 109
 110 typedef struct {
 111     DWORD version;
 112     WORD ScriptList;
 113     WORD FeatureList;
 114     WORD LookupList;
 115 } GSUB_Header;
 116
 117 typedef struct {
 118     CHAR ScriptTag[4];
 119     WORD Script;
 120 } OT_ScriptRecord;
 121
 122 typedef struct {
 123     WORD ScriptCount;
 124     OT_ScriptRecord ScriptRecord[1];
 125 } OT_ScriptList;
 126
 127 typedef struct {
 128     CHAR LangSysTag[4];
 129     WORD LangSys;
 130 } OT_LangSysRecord;
 131
 132 typedef struct {
 133     WORD DefaultLangSys;
 134     WORD LangSysCount;
 135     OT_LangSysRecord LangSysRecord[1];
 136 } OT_Script;
 137
 138 typedef struct {
 139     WORD LookupOrder; /* Reserved */
 140     WORD ReqFeatureIndex;
 141     WORD FeatureCount;
 142     WORD FeatureIndex[1];
 143 } OT_LangSys;
 144
 145 typedef struct {
 146     CHAR FeatureTag[4];
 147     WORD Feature;
 148 } OT_FeatureRecord;
 149
 150 typedef struct {
 151     WORD FeatureCount;
 152     OT_FeatureRecord FeatureRecord[1];
 153 } OT_FeatureList;
 154
 155 typedef struct {
 156     WORD FeatureParams; /* Reserved */
 157     WORD LookupCount;
 158     WORD LookupListIndex[1];
 159 } OT_Feature;
 160
 161 typedef struct {
 162     WORD LookupCount;
 163     WORD Lookup[1];
 164 } OT_LookupList;
 165
 166 typedef struct {
 167     WORD LookupType;
 168     WORD LookupFlag;
 169     WORD SubTableCount;
 170     WORD SubTable[1];
 171 } OT_LookupTable;
 172
 173 typedef struct {
 174     WORD CoverageFormat;
 175     WORD GlyphCount;
 176     WORD GlyphArray[1];
 177 } OT_CoverageFormat1;
 178
 179 typedef struct {
 180     WORD Start;
 181     WORD End;
 182     WORD StartCoverageIndex;
 183 } OT_RangeRecord;
 184
 185 typedef struct {
 186     WORD CoverageFormat;
 187     WORD RangeCount;
 188     OT_RangeRecord RangeRecord[1];
 189 } OT_CoverageFormat2;
 190
 191 typedef struct {
 192     WORD SubstFormat; /* = 1 */
 193     WORD Coverage;
 194     WORD DeltaGlyphID;
 195 } GSUB_SingleSubstFormat1;
 196
 197 typedef struct {
 198     WORD SubstFormat; /* = 2 */
 199     WORD Coverage;
 200     WORD GlyphCount;
 201     WORD Substitute[1];
 202 }GSUB_SingleSubstFormat2;
 203
 204 typedef struct {
 205     WORD SubstFormat; /* = 1 */
 206     WORD Coverage;
 207     WORD SequenceCount;
 208     WORD Sequence[1];
 209 }GSUB_MultipleSubstFormat1;
 210
 211 typedef struct {
 212     WORD GlyphCount;
 213     WORD Substitute[1];
 214 }GSUB_Sequence;
 215
 216 typedef struct {
 217     WORD SubstFormat; /* = 1 */
 218     WORD Coverage;
 219     WORD LigSetCount;
 220     WORD LigatureSet[1];
 221 }GSUB_LigatureSubstFormat1;
 222
 223 typedef struct {
 224     WORD LigatureCount;
 225     WORD Ligature[1];
 226 }GSUB_LigatureSet;
 227
 228 typedef struct{
 229     WORD LigGlyph;
 230     WORD CompCount;
 231     WORD Component[1];
 232 }GSUB_Ligature;
 233
 234 typedef struct{
 235     WORD SequenceIndex;
 236     WORD LookupListIndex;
 237
 238 }GSUB_SubstLookupRecord;
 239
 240 typedef struct{
 241     WORD SubstFormat; /* = 1 */
 242     WORD Coverage;
 243     WORD ChainSubRuleSetCount;
 244     WORD ChainSubRuleSet[1];
 245 }GSUB_ChainContextSubstFormat1;
 246
 247 typedef struct {
 248     WORD SubstFormat; /* = 3 */
 249     WORD BacktrackGlyphCount;
 250     WORD Coverage[1];
 251 }GSUB_ChainContextSubstFormat3_1;
 252
 253 typedef struct{
 254     WORD InputGlyphCount;
 255     WORD Coverage[1];
 256 }GSUB_ChainContextSubstFormat3_2;
 257
 258 typedef struct{
 259     WORD LookaheadGlyphCount;
 260     WORD Coverage[1];
 261 }GSUB_ChainContextSubstFormat3_3;
 262
 263 typedef struct{
 264     WORD SubstCount;
 265     GSUB_SubstLookupRecord SubstLookupRecord[1];
 266 }GSUB_ChainContextSubstFormat3_4;
 267
 268 typedef struct {
 269     WORD SubstFormat; /* = 1 */
 270     WORD Coverage;
 271     WORD AlternateSetCount;
 272     WORD AlternateSet[1];
 273 } GSUB_AlternateSubstFormat1;
 274
 275 typedef struct{
 276     WORD GlyphCount;
 277     WORD Alternate[1];
 278 } GSUB_AlternateSet;
 279
 280 /* These are all structures needed for the GPOS table */
 281
 282 typedef struct {
 283     DWORD version;
 284     WORD ScriptList;
 285     WORD FeatureList;
 286     WORD LookupList;
 287 } GPOS_Header;
 288
 289 typedef struct {
 290     WORD StartSize;
 291     WORD EndSize;
 292     WORD DeltaFormat;
 293     WORD DeltaValue[1];
 294 } OT_DeviceTable;
 295
 296 typedef struct {
 297     WORD AnchorFormat;
 298     WORD XCoordinate;
 299     WORD YCoordinate;
 300 } GPOS_AnchorFormat1;
 301
 302 typedef struct {
 303     WORD AnchorFormat;
 304     WORD XCoordinate;
 305     WORD YCoordinate;
 306     WORD AnchorPoint;
 307 } GPOS_AnchorFormat2;
 308
 309 typedef struct {
 310     WORD AnchorFormat;
 311     WORD XCoordinate;
 312     WORD YCoordinate;
 313     WORD XDeviceTable;
 314     WORD YDeviceTable;
 315 } GPOS_AnchorFormat3;
 316
 317 typedef struct {
 318     WORD XPlacement;
 319     WORD YPlacement;
 320     WORD XAdvance;
 321     WORD YAdvance;
 322     WORD XPlaDevice;
 323     WORD YPlaDevice;
 324     WORD XAdvDevice;
 325     WORD YAdvDevice;
 326 } GPOS_ValueRecord;
 327
 328 typedef struct {
 329     WORD PosFormat;
 330     WORD Coverage;
 331     WORD ValueFormat;
 332     WORD Value[1];
 333 } GPOS_SinglePosFormat1;
 334
 335 typedef struct {
 336     WORD PosFormat;
 337     WORD Coverage;
 338     WORD ValueFormat;
 339     WORD ValueCount;
 340     WORD Value[1];
 341 } GPOS_SinglePosFormat2;
 342
 343 typedef struct {
 344     WORD PosFormat;
 345     WORD Coverage;
 346     WORD ValueFormat1;
 347     WORD ValueFormat2;
 348     WORD PairSetCount;
 349     WORD PairSetOffset[1];
 350 } GPOS_PairPosFormat1;
 351
 352 typedef struct {
 353     WORD PosFormat;
 354     WORD Coverage;
 355     WORD ValueFormat1;
 356     WORD ValueFormat2;
 357     WORD ClassDef1;
 358     WORD ClassDef2;
 359     WORD Class1Count;
 360     WORD Class2Count;
 361     WORD Class1Record[1];
 362 } GPOS_PairPosFormat2;
 363
 364 typedef struct {
 365     WORD SecondGlyph;
 366     WORD Value1[1];
 367     WORD Value2[1];
 368 } GPOS_PairValueRecord;
 369
 370 typedef struct {
 371     WORD PairValueCount;
 372     GPOS_PairValueRecord PairValueRecord[1];
 373 } GPOS_PairSet;
 374
 375 typedef struct {
 376     WORD EntryAnchor;
 377     WORD ExitAnchor;
 378 } GPOS_EntryExitRecord;
 379
 380 typedef struct {
 381     WORD PosFormat;
 382     WORD Coverage;
 383     WORD EntryExitCount;
 384     GPOS_EntryExitRecord EntryExitRecord[1];
 385 } GPOS_CursivePosFormat1;
 386
 387 typedef struct {
 388     WORD PosFormat;
 389     WORD MarkCoverage;
 390     WORD BaseCoverage;
 391     WORD ClassCount;
 392     WORD MarkArray;
 393     WORD BaseArray;
 394 } GPOS_MarkBasePosFormat1;
 395
 396 typedef struct {
 397     WORD BaseAnchor[1];
 398 } GPOS_BaseRecord;
 399
 400 typedef struct {
 401     WORD BaseCount;
 402     GPOS_BaseRecord BaseRecord[1];
 403 } GPOS_BaseArray;
 404
 405 typedef struct {
 406     WORD Class;
 407     WORD MarkAnchor;
 408 } GPOS_MarkRecord;
 409
 410 typedef struct {
 411     WORD MarkCount;
 412     GPOS_MarkRecord MarkRecord[1];
 413 } GPOS_MarkArray;
 414
 415 typedef struct {
 416     WORD PosFormat;
 417     WORD MarkCoverage;
 418     WORD LigatureCoverage;
 419     WORD ClassCount;
 420     WORD MarkArray;
 421     WORD LigatureArray;
 422 } GPOS_MarkLigPosFormat1;
 423
 424 typedef struct {
 425     WORD LigatureCount;
 426     WORD LigatureAttach[1];
 427 } GPOS_LigatureArray;
 428
 429 typedef struct {
 430     WORD LigatureAnchor[1];
 431 } GPOS_ComponentRecord;
 432
 433 typedef struct {
 434     WORD ComponentCount;
 435     GPOS_ComponentRecord ComponentRecord[1];
 436 } GPOS_LigatureAttach;
 437
 438 typedef struct {
 439     WORD PosFormat;
 440     WORD Mark1Coverage;
 441     WORD Mark2Coverage;
 442     WORD ClassCount;
 443     WORD Mark1Array;
 444     WORD Mark2Array;
 445 } GPOS_MarkMarkPosFormat1;
 446
 447 typedef struct {
 448     WORD Mark2Anchor[1];
 449 } GPOS_Mark2Record;
 450
 451 typedef struct {
 452     WORD Mark2Count;
 453     GPOS_Mark2Record Mark2Record[1];
 454 } GPOS_Mark2Array;
 455
 456 typedef struct {
 457     WORD SequenceIndex;
 458     WORD LookupListIndex;
 459 } GPOS_PosLookupRecord;
 460
 461 typedef struct {
 462     WORD PosFormat;
 463     WORD BacktrackGlyphCount;
 464     WORD Coverage[1];
 465 } GPOS_ChainContextPosFormat3_1;
 466
 467 typedef struct {
 468     WORD InputGlyphCount;
 469     WORD Coverage[1];
 470 } GPOS_ChainContextPosFormat3_2;
 471
 472 typedef struct {
 473     WORD LookaheadGlyphCount;
 474     WORD Coverage[1];
 475 } GPOS_ChainContextPosFormat3_3;
 476
 477 typedef struct {
 478     WORD PosCount;
 479     GPOS_PosLookupRecord PosLookupRecord[1];
 480 } GPOS_ChainContextPosFormat3_4;
 481
 482 typedef struct {
 483     WORD PosFormat;
 484     WORD ExtensionLookupType;
 485     DWORD ExtensionOffset;
 486 } GPOS_ExtensionPosFormat1;
 487
 488 /**********
 489  * CMAP
 490  **********/
 491
 492 static VOID *load_CMAP_format12_table(HDC hdc, ScriptCache *psc)
 493 {
 494     CMAP_Header *CMAP_Table = NULL;
 495     int length;
 496     int i;
 497
 498     if (!psc->CMAP_Table)
 499     {
 500         length = GetFontData(hdc, CMAP_TAG , 0, NULL, 0);
 501         if (length != GDI_ERROR)
 502         {
 503             psc->CMAP_Table = HeapAlloc(GetProcessHeap(),0,length);
 504             GetFontData(hdc, CMAP_TAG , 0, psc->CMAP_Table, length);
 505             TRACE("Loaded cmap table of %i bytes\n",length);
 506         }
 507         else
 508             return NULL;
 509     }
 510
 511     CMAP_Table = psc->CMAP_Table;
 512
 513     for (i = 0; i < GET_BE_WORD(CMAP_Table->numTables); i++)
 514     {
 515         if ( (GET_BE_WORD(CMAP_Table->tables[i].platformID) == 3) &&
 516              (GET_BE_WORD(CMAP_Table->tables[i].encodingID) == 10) )
 517         {
 518             CMAP_SegmentedCoverage *format = (CMAP_SegmentedCoverage*)(((BYTE*)CMAP_Table) + GET_BE_DWORD(CMAP_Table->tables[i].offset));
 519             if (GET_BE_WORD(format->format) == 12)
 520                 return format;
 521         }
 522     }
 523     return NULL;
 524 }
 525
 526 static int compare_group(const void *a, const void* b)
 527 {
 528     const DWORD *chr = a;
 529     const CMAP_SegmentedCoverage_group *group = b;
 530
 531     if (*chr < GET_BE_DWORD(group->startCharCode))
 532         return -1;
 533     if (*chr > GET_BE_DWORD(group->endCharCode))
 534         return 1;
 535     return 0;
 536 }
 537
 538 DWORD OpenType_CMAP_GetGlyphIndex(HDC hdc, ScriptCache *psc, DWORD utf32c, LPWORD pgi, DWORD flags)
 539 {
 540     /* BMP: use gdi32 for ease */
 541     if (utf32c < 0x10000)
 542     {
 543         WCHAR ch = utf32c;
 544         return GetGlyphIndicesW(hdc,&ch, 1, pgi, flags);
 545     }
 546
 547     if (!psc->CMAP_format12_Table)
 548         psc->CMAP_format12_Table = load_CMAP_format12_table(hdc, psc);
 549
 550     if (flags & GGI_MARK_NONEXISTING_GLYPHS)
 551         *pgi = 0xffff;
 552     else
 553         *pgi = 0;
 554
 555     if (psc->CMAP_format12_Table)
 556     {
 557         CMAP_SegmentedCoverage *format = NULL;
 558         CMAP_SegmentedCoverage_group *group = NULL;
 559
 560         format = (CMAP_SegmentedCoverage *)psc->CMAP_format12_Table;
 561
 562         group = bsearch(&utf32c, format->groups, GET_BE_DWORD(format->nGroups),
 563                         sizeof(CMAP_SegmentedCoverage_group), compare_group);
 564
 565         if (group)
 566         {
 567             DWORD offset = utf32c - GET_BE_DWORD(group->startCharCode);
 568             *pgi = GET_BE_DWORD(group->startGlyphID) + offset;
 569             return 0;
 570         }
 571     }
 572     return 0;
 573 }
 574
 575 /**********
 576  * GDEF
 577  **********/
 578
 579 static WORD OT_get_glyph_class(const void *table, WORD glyph)
 580 {
 581     WORD class = 0;
 582     const OT_ClassDefFormat1 *cf1 = table;
 583
 584     if (!table) return 0;
 585
 586     if (GET_BE_WORD(cf1->ClassFormat) == 1)
 587     {
 588         if (glyph >= GET_BE_WORD(cf1->StartGlyph))
 589         {
 590             int index = glyph - GET_BE_WORD(cf1->StartGlyph);
 591             if (index < GET_BE_WORD(cf1->GlyphCount))
 592                 class = GET_BE_WORD(cf1->ClassValueArray[index]);
 593         }
 594     }
 595     else if (GET_BE_WORD(cf1->ClassFormat) == 2)
 596     {
 597         const OT_ClassDefFormat2 *cf2 = table;
 598         int i, top;
 599         top = GET_BE_WORD(cf2->ClassRangeCount);
 600         for (i = 0; i < top; i++)
 601         {
 602             if (glyph >= GET_BE_WORD(cf2->ClassRangeRecord[i].Start) &&
 603                 glyph <= GET_BE_WORD(cf2->ClassRangeRecord[i].End))
 604             {
 605                 class = GET_BE_WORD(cf2->ClassRangeRecord[i].Class);
 606                 break;
 607             }
 608         }
 609     }
 610     else
 611         ERR("Unknown Class Format %i\n",GET_BE_WORD(cf1->ClassFormat));
 612
 613     return class;
 614 }
 615
 616 void OpenType_GDEF_UpdateGlyphProps(ScriptCache *psc, const WORD *pwGlyphs, const WORD cGlyphs, WORD* pwLogClust, const WORD cChars, SCRIPT_GLYPHPROP *pGlyphProp)
 617 {
 618     int i;
 619     void *glyph_class_table = NULL;
 620
 621     if (psc->GDEF_Table)
 622     {
 623         const GDEF_Header *header = psc->GDEF_Table;
 624         WORD offset = GET_BE_WORD( header->GlyphClassDef );
 625         if (offset)
 626             glyph_class_table = (BYTE *)psc->GDEF_Table + offset;
 627     }
 628
 629     for (i = 0; i < cGlyphs; i++)
 630     {
 631         WORD class;
 632         int char_count = 0;
 633         int k;
 634
 635         k = USP10_FindGlyphInLogClust(pwLogClust, cChars, i);
 636         if (k >= 0)
 637         {
 638             for (; k < cChars && pwLogClust[k] == i; k++)
 639                 char_count++;
 640         }
 641
 642         class = OT_get_glyph_class( glyph_class_table, pwGlyphs[i] );
 643
 644         switch (class)
 645         {
 646             case 0:
 647             case BaseGlyph:
 648                 pGlyphProp[i].sva.fClusterStart = 1;
 649                 pGlyphProp[i].sva.fDiacritic = 0;
 650                 pGlyphProp[i].sva.fZeroWidth = 0;
 651                 break;
 652             case LigatureGlyph:
 653                 pGlyphProp[i].sva.fClusterStart = 1;
 654                 pGlyphProp[i].sva.fDiacritic = 0;
 655                 pGlyphProp[i].sva.fZeroWidth = 0;
 656                 break;
 657             case MarkGlyph:
 658                 pGlyphProp[i].sva.fClusterStart = 0;
 659                 pGlyphProp[i].sva.fDiacritic = 1;
 660                 pGlyphProp[i].sva.fZeroWidth = 1;
 661                 break;
 662             case ComponentGlyph:
 663                 pGlyphProp[i].sva.fClusterStart = 0;
 664                 pGlyphProp[i].sva.fDiacritic = 0;
 665                 pGlyphProp[i].sva.fZeroWidth = 0;
 666                 break;
 667             default:
 668                 ERR("Unknown glyph class %i\n",class);
 669                 pGlyphProp[i].sva.fClusterStart = 1;
 670                 pGlyphProp[i].sva.fDiacritic = 0;
 671                 pGlyphProp[i].sva.fZeroWidth = 0;
 672         }
 673
 674         if (char_count == 0)
 675             pGlyphProp[i].sva.fClusterStart = 0;
 676     }
 677 }
 678
 679 /**********
 680  * GSUB
 681  **********/
 682 static INT GSUB_apply_lookup(const OT_LookupList* lookup, INT lookup_index, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count);
 683
 684 static INT GSUB_is_glyph_covered(LPCVOID table , UINT glyph)
 685 {
 686     const OT_CoverageFormat1* cf1;
 687
 688     cf1 = table;
 689
 690     if (GET_BE_WORD(cf1->CoverageFormat) == 1)
 691     {
 692         int count = GET_BE_WORD(cf1->GlyphCount);
 693         int i;
 694         TRACE("Coverage Format 1, %i glyphs\n",count);
 695         for (i = 0; i < count; i++)
 696             if (glyph == GET_BE_WORD(cf1->GlyphArray[i]))
 697                 return i;
 698         return -1;
 699     }
 700     else if (GET_BE_WORD(cf1->CoverageFormat) == 2)
 701     {
 702         const OT_CoverageFormat2* cf2;
 703         int i;
 704         int count;
 705         cf2 = (const OT_CoverageFormat2*)cf1;
 706
 707         count = GET_BE_WORD(cf2->RangeCount);
 708         TRACE("Coverage Format 2, %i ranges\n",count);
 709         for (i = 0; i < count; i++)
 710         {
 711             if (glyph < GET_BE_WORD(cf2->RangeRecord[i].Start))
 712                 return -1;
 713             if ((glyph >= GET_BE_WORD(cf2->RangeRecord[i].Start)) &&
 714                 (glyph <= GET_BE_WORD(cf2->RangeRecord[i].End)))
 715             {
 716                 return (GET_BE_WORD(cf2->RangeRecord[i].StartCoverageIndex) +
 717                     glyph - GET_BE_WORD(cf2->RangeRecord[i].Start));
 718             }
 719         }
 720         return -1;
 721     }
 722     else
 723         ERR("Unknown CoverageFormat %i\n",GET_BE_WORD(cf1->CoverageFormat));
 724
 725     return -1;
 726 }
 727
 728 static INT GSUB_apply_SingleSubst(const OT_LookupTable *look, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
 729 {
 730     int j;
 731     TRACE("Single Substitution Subtable\n");
 732
 733     for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
 734     {
 735         int offset;
 736         const GSUB_SingleSubstFormat1 *ssf1;
 737         offset = GET_BE_WORD(look->SubTable[j]);
 738         ssf1 = (const GSUB_SingleSubstFormat1*)((const BYTE*)look+offset);
 739         if (GET_BE_WORD(ssf1->SubstFormat) == 1)
 740         {
 741             int offset = GET_BE_WORD(ssf1->Coverage);
 742             TRACE("  subtype 1, delta %i\n", GET_BE_WORD(ssf1->DeltaGlyphID));
 743             if (GSUB_is_glyph_covered((const BYTE*)ssf1+offset, glyphs[glyph_index]) != -1)
 744             {
 745                 TRACE("  Glyph 0x%x ->",glyphs[glyph_index]);
 746                 glyphs[glyph_index] = glyphs[glyph_index] + GET_BE_WORD(ssf1->DeltaGlyphID);
 747                 TRACE(" 0x%x\n",glyphs[glyph_index]);
 748                 return glyph_index + write_dir;
 749             }
 750         }
 751         else
 752         {
 753             const GSUB_SingleSubstFormat2 *ssf2;
 754             INT index;
 755             INT offset;
 756
 757             ssf2 = (const GSUB_SingleSubstFormat2 *)ssf1;
 758             offset = GET_BE_WORD(ssf1->Coverage);
 759             TRACE("  subtype 2,  glyph count %i\n", GET_BE_WORD(ssf2->GlyphCount));
 760             index = GSUB_is_glyph_covered((const BYTE*)ssf2+offset, glyphs[glyph_index]);
 761             TRACE("  Coverage index %i\n",index);
 762             if (index != -1)
 763             {
 764                 if (glyphs[glyph_index] == GET_BE_WORD(ssf2->Substitute[index]))
 765                     return GSUB_E_NOGLYPH;
 766
 767                 TRACE("    Glyph is 0x%x ->",glyphs[glyph_index]);
 768                 glyphs[glyph_index] = GET_BE_WORD(ssf2->Substitute[index]);
 769                 TRACE("0x%x\n",glyphs[glyph_index]);
 770                 return glyph_index + write_dir;
 771             }
 772         }
 773     }
 774     return GSUB_E_NOGLYPH;
 775 }
 776
 777 static INT GSUB_apply_MultipleSubst(const OT_LookupTable *look, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
 778 {
 779     int j;
 780     TRACE("Multiple Substitution Subtable\n");
 781
 782     for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
 783     {
 784         int offset, index;
 785         const GSUB_MultipleSubstFormat1 *msf1;
 786         offset = GET_BE_WORD(look->SubTable[j]);
 787         msf1 = (const GSUB_MultipleSubstFormat1*)((const BYTE*)look+offset);
 788
 789         offset = GET_BE_WORD(msf1->Coverage);
 790         index = GSUB_is_glyph_covered((const BYTE*)msf1+offset, glyphs[glyph_index]);
 791         if (index != -1)
 792         {
 793             const GSUB_Sequence *seq;
 794             int sub_count;
 795             int j;
 796             offset = GET_BE_WORD(msf1->Sequence[index]);
 797             seq = (const GSUB_Sequence*)((const BYTE*)msf1+offset);
 798             sub_count = GET_BE_WORD(seq->GlyphCount);
 799             TRACE("  Glyph 0x%x (+%i)->",glyphs[glyph_index],(sub_count-1));
 800
 801             for (j = (*glyph_count)+(sub_count-1); j > glyph_index; j--)
 802                     glyphs[j] =glyphs[j-(sub_count-1)];
 803
 804             for (j = 0; j < sub_count; j++)
 805                     if (write_dir < 0)
 806                         glyphs[glyph_index + (sub_count-1) - j] = GET_BE_WORD(seq->Substitute[j]);
 807                     else
 808                         glyphs[glyph_index + j] = GET_BE_WORD(seq->Substitute[j]);
 809
 810             *glyph_count = *glyph_count + (sub_count - 1);
 811
 812             if (TRACE_ON(uniscribe))
 813             {
 814                 for (j = 0; j < sub_count; j++)
 815                     TRACE(" 0x%x",glyphs[glyph_index+j]);
 816                 TRACE("\n");
 817             }
 818
 819             return glyph_index + (sub_count * write_dir);
 820         }
 821     }
 822     return GSUB_E_NOGLYPH;
 823 }
 824
 825 static INT GSUB_apply_AlternateSubst(const OT_LookupTable *look, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
 826 {
 827     int j;
 828     TRACE("Alternate Substitution Subtable\n");
 829
 830     for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
 831     {
 832         int offset;
 833         const GSUB_AlternateSubstFormat1 *asf1;
 834         INT index;
 835
 836         offset = GET_BE_WORD(look->SubTable[j]);
 837         asf1 = (const GSUB_AlternateSubstFormat1*)((const BYTE*)look+offset);
 838         offset = GET_BE_WORD(asf1->Coverage);
 839
 840         index = GSUB_is_glyph_covered((const BYTE*)asf1+offset, glyphs[glyph_index]);
 841         if (index != -1)
 842         {
 843             const GSUB_AlternateSet *as;
 844             offset =  GET_BE_WORD(asf1->AlternateSet[index]);
 845             as = (const GSUB_AlternateSet*)((const BYTE*)asf1+offset);
 846             FIXME("%i alternates, picking index 0\n",GET_BE_WORD(as->GlyphCount));
 847             if (glyphs[glyph_index] == GET_BE_WORD(as->Alternate[0]))
 848                 return GSUB_E_NOGLYPH;
 849
 850             TRACE("  Glyph 0x%x ->",glyphs[glyph_index]);
 851             glyphs[glyph_index] = GET_BE_WORD(as->Alternate[0]);
 852             TRACE(" 0x%x\n",glyphs[glyph_index]);
 853             return glyph_index + write_dir;
 854         }
 855     }
 856     return GSUB_E_NOGLYPH;
 857 }
 858
 859 static INT GSUB_apply_LigatureSubst(const OT_LookupTable *look, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
 860 {
 861     int j;
 862
 863     TRACE("Ligature Substitution Subtable\n");
 864     for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
 865     {
 866         const GSUB_LigatureSubstFormat1 *lsf1;
 867         int offset,index;
 868
 869         offset = GET_BE_WORD(look->SubTable[j]);
 870         lsf1 = (const GSUB_LigatureSubstFormat1*)((const BYTE*)look+offset);
 871         offset = GET_BE_WORD(lsf1->Coverage);
 872         index = GSUB_is_glyph_covered((const BYTE*)lsf1+offset, glyphs[glyph_index]);
 873         TRACE("  Coverage index %i\n",index);
 874         if (index != -1)
 875         {
 876             const GSUB_LigatureSet *ls;
 877             int k, count;
 878
 879             offset = GET_BE_WORD(lsf1->LigatureSet[index]);
 880             ls = (const GSUB_LigatureSet*)((const BYTE*)lsf1+offset);
 881             count = GET_BE_WORD(ls->LigatureCount);
 882             TRACE("  LigatureSet has %i members\n",count);
 883             for (k = 0; k < count; k++)
 884             {
 885                 const GSUB_Ligature *lig;
 886                 int CompCount,l,CompIndex;
 887
 888                 offset = GET_BE_WORD(ls->Ligature[k]);
 889                 lig = (const GSUB_Ligature*)((const BYTE*)ls+offset);
 890                 CompCount = GET_BE_WORD(lig->CompCount) - 1;
 891                 CompIndex = glyph_index+write_dir;
 892                 for (l = 0; l < CompCount && CompIndex >= 0 && CompIndex < *glyph_count; l++)
 893                 {
 894                     int CompGlyph;
 895                     CompGlyph = GET_BE_WORD(lig->Component[l]);
 896                     if (CompGlyph != glyphs[CompIndex])
 897                         break;
 898                     CompIndex += write_dir;
 899                 }
 900                 if (l == CompCount)
 901                 {
 902                     int replaceIdx = glyph_index;
 903                     if (write_dir < 0)
 904                         replaceIdx = glyph_index - CompCount;
 905
 906                     TRACE("    Glyph is 0x%x (+%i) ->",glyphs[glyph_index],CompCount);
 907                     glyphs[replaceIdx] = GET_BE_WORD(lig->LigGlyph);
 908                     TRACE("0x%x\n",glyphs[replaceIdx]);
 909                     if (CompCount > 0)
 910                     {
 911                         int j;
 912                         for (j = replaceIdx + 1; j < *glyph_count; j++)
 913                             glyphs[j] =glyphs[j+CompCount];
 914                         *glyph_count = *glyph_count - CompCount;
 915                     }
 916                     return replaceIdx + write_dir;
 917                 }
 918             }
 919         }
 920     }
 921     return GSUB_E_NOGLYPH;
 922 }
 923
 924 static INT GSUB_apply_ChainContextSubst(const OT_LookupList* lookup, const OT_LookupTable *look, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
 925 {
 926     int j;
 927     BOOL done = FALSE;
 928
 929     TRACE("Chaining Contextual Substitution Subtable\n");
 930     for (j = 0; j < GET_BE_WORD(look->SubTableCount) && !done; j++)
 931     {
 932         const GSUB_ChainContextSubstFormat1 *ccsf1;
 933         int offset;
 934         int dirLookahead = write_dir;
 935         int dirBacktrack = -1 * write_dir;
 936
 937         offset = GET_BE_WORD(look->SubTable[j]);
 938         ccsf1 = (const GSUB_ChainContextSubstFormat1*)((const BYTE*)look+offset);
 939         if (GET_BE_WORD(ccsf1->SubstFormat) == 1)
 940         {
 941             FIXME("  TODO: subtype 1 (Simple context glyph substitution)\n");
 942             continue;
 943         }
 944         else if (GET_BE_WORD(ccsf1->SubstFormat) == 2)
 945         {
 946             FIXME("  TODO: subtype 2 (Class-based Chaining Context Glyph Substitution)\n");
 947             continue;
 948         }
 949         else if (GET_BE_WORD(ccsf1->SubstFormat) == 3)
 950         {
 951             int k;
 952             int indexGlyphs;
 953             const GSUB_ChainContextSubstFormat3_1 *ccsf3_1;
 954             const GSUB_ChainContextSubstFormat3_2 *ccsf3_2;
 955             const GSUB_ChainContextSubstFormat3_3 *ccsf3_3;
 956             const GSUB_ChainContextSubstFormat3_4 *ccsf3_4;
 957             int newIndex = glyph_index;
 958
 959             ccsf3_1 = (const GSUB_ChainContextSubstFormat3_1 *)ccsf1;
 960
 961             TRACE("  subtype 3 (Coverage-based Chaining Context Glyph Substitution)\n");
 962
 963             for (k = 0; k < GET_BE_WORD(ccsf3_1->BacktrackGlyphCount); k++)
 964             {
 965                 offset = GET_BE_WORD(ccsf3_1->Coverage[k]);
 966                 if (GSUB_is_glyph_covered((const BYTE*)ccsf3_1+offset, glyphs[glyph_index + (dirBacktrack * (k+1))]) == -1)
 967                     break;
 968             }
 969             if (k != GET_BE_WORD(ccsf3_1->BacktrackGlyphCount))
 970                 continue;
 971             TRACE("Matched Backtrack\n");
 972
 973             ccsf3_2 = (const GSUB_ChainContextSubstFormat3_2 *)((BYTE *)ccsf1 +
 974                     FIELD_OFFSET(GSUB_ChainContextSubstFormat3_1, Coverage[GET_BE_WORD(ccsf3_1->BacktrackGlyphCount)]));
 975
 976             indexGlyphs = GET_BE_WORD(ccsf3_2->InputGlyphCount);
 977             for (k = 0; k < indexGlyphs; k++)
 978             {
 979                 offset = GET_BE_WORD(ccsf3_2->Coverage[k]);
 980                 if (GSUB_is_glyph_covered((const BYTE*)ccsf3_1+offset, glyphs[glyph_index + (write_dir * k)]) == -1)
 981                     break;
 982             }
 983             if (k != indexGlyphs)
 984                 continue;
 985             TRACE("Matched IndexGlyphs\n");
 986
 987             ccsf3_3 = (const GSUB_ChainContextSubstFormat3_3 *)((BYTE *)ccsf3_2 +
 988                     FIELD_OFFSET(GSUB_ChainContextSubstFormat3_2, Coverage[GET_BE_WORD(ccsf3_2->InputGlyphCount)]));
 989
 990             for (k = 0; k < GET_BE_WORD(ccsf3_3->LookaheadGlyphCount); k++)
 991             {
 992                 offset = GET_BE_WORD(ccsf3_3->Coverage[k]);
 993                 if (GSUB_is_glyph_covered((const BYTE*)ccsf3_1+offset, glyphs[glyph_index + (dirLookahead * (indexGlyphs + k))]) == -1)
 994                     break;
 995             }
 996             if (k != GET_BE_WORD(ccsf3_3->LookaheadGlyphCount))
 997                 continue;
 998             TRACE("Matched LookAhead\n");
 999
1000             ccsf3_4 = (const GSUB_ChainContextSubstFormat3_4 *)((BYTE *)ccsf3_3 +
1001                     FIELD_OFFSET(GSUB_ChainContextSubstFormat3_3, Coverage[GET_BE_WORD(ccsf3_3->LookaheadGlyphCount)]));
1002
1003             if (GET_BE_WORD(ccsf3_4->SubstCount))
1004             {
1005                 for (k = 0; k < GET_BE_WORD(ccsf3_4->SubstCount); k++)
1006                 {
1007                     int lookupIndex = GET_BE_WORD(ccsf3_4->SubstLookupRecord[k].LookupListIndex);
1008                     int SequenceIndex = GET_BE_WORD(ccsf3_4->SubstLookupRecord[k].SequenceIndex) * write_dir;
1009
1010                     TRACE("SUBST: %i -> %i %i\n",k, SequenceIndex, lookupIndex);
1011                     newIndex = GSUB_apply_lookup(lookup, lookupIndex, glyphs, glyph_index + SequenceIndex, write_dir, glyph_count);
1012                     if (newIndex == -1)
1013                     {
1014                         ERR("Chain failed to generate a glyph\n");
1015                         continue;
1016                     }
1017                 }
1018                 return newIndex;
1019             }
1020             else return GSUB_E_NOGLYPH;
1021         }
1022     }
1023     return -1;
1024 }
1025
1026 static INT GSUB_apply_lookup(const OT_LookupList* lookup, INT lookup_index, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
1027 {
1028     int offset;
1029     const OT_LookupTable *look;
1030
1031     offset = GET_BE_WORD(lookup->Lookup[lookup_index]);
1032     look = (const OT_LookupTable*)((const BYTE*)lookup + offset);
1033     TRACE("type %i, flag %x, subtables %i\n",GET_BE_WORD(look->LookupType),GET_BE_WORD(look->LookupFlag),GET_BE_WORD(look->SubTableCount));
1034     switch(GET_BE_WORD(look->LookupType))
1035     {
1036         case 1:
1037             return GSUB_apply_SingleSubst(look, glyphs, glyph_index, write_dir, glyph_count);
1038         case 2:
1039             return GSUB_apply_MultipleSubst(look, glyphs, glyph_index, write_dir, glyph_count);
1040         case 3:
1041             return GSUB_apply_AlternateSubst(look, glyphs, glyph_index, write_dir, glyph_count);
1042         case 4:
1043             return GSUB_apply_LigatureSubst(look, glyphs, glyph_index, write_dir, glyph_count);
1044         case 6:
1045             return GSUB_apply_ChainContextSubst(lookup, look, glyphs, glyph_index, write_dir, glyph_count);
1046         default:
1047             FIXME("We do not handle SubType %i\n",GET_BE_WORD(look->LookupType));
1048     }
1049     return GSUB_E_NOGLYPH;
1050 }
1051
1052 INT OpenType_apply_GSUB_lookup(LPCVOID table, INT lookup_index, WORD *glyphs, INT glyph_index, INT write_dir, INT *glyph_count)
1053 {
1054     const GSUB_Header *header = (const GSUB_Header *)table;
1055     const OT_LookupList *lookup = (const OT_LookupList*)((const BYTE*)header + GET_BE_WORD(header->LookupList));
1056
1057     return GSUB_apply_lookup(lookup, lookup_index, glyphs, glyph_index, write_dir, glyph_count);
1058 }
1059
1060 /**********
1061  * GPOS
1062  **********/
1063 static INT GPOS_apply_lookup(ScriptCache *psc, LPOUTLINETEXTMETRICW lpotm, LPLOGFONTW lplogfont, const SCRIPT_ANALYSIS *analysis, INT* piAdvance,
1064                              const OT_LookupList* lookup, INT lookup_index, const WORD *glyphs, INT glyph_index, INT glyph_count, GOFFSET *pGoffset);
1065
1066 static INT GPOS_get_device_table_value(const OT_DeviceTable *DeviceTable, WORD ppem)
1067 {
1068     static const WORD mask[3] = {3,0xf,0xff};
1069     if (DeviceTable && ppem >= GET_BE_WORD(DeviceTable->StartSize) && ppem  <= GET_BE_WORD(DeviceTable->EndSize))
1070     {
1071         int format = GET_BE_WORD(DeviceTable->DeltaFormat);
1072         int index = ppem - GET_BE_WORD(DeviceTable->StartSize);
1073         int value;
1074         TRACE("device table, format %i, index %i\n",format, index);
1075         index = index << format;
1076         value = (DeviceTable->DeltaValue[index/sizeof(WORD)] << (index%sizeof(WORD)))&mask[format-1];
1077         TRACE("offset %i, value %i\n",index, value);
1078         if (value > mask[format-1]/2)
1079             value = -1 * ((mask[format-1]+1) - value);
1080         return value;
1081     }
1082     return 0;
1083 }
1084
1085 static VOID GPOS_get_anchor_values(LPCVOID table, LPPOINT pt, WORD ppem)
1086 {
1087     const GPOS_AnchorFormat1* anchor1 = (const GPOS_AnchorFormat1*)table;
1088
1089     switch (GET_BE_WORD(anchor1->AnchorFormat))
1090     {
1091         case 1:
1092         {
1093             TRACE("Anchor Format 1\n");
1094             pt->x = (short)GET_BE_WORD(anchor1->XCoordinate);
1095             pt->y = (short)GET_BE_WORD(anchor1->YCoordinate);
1096             break;
1097         }
1098         case 2:
1099         {
1100             const GPOS_AnchorFormat2* anchor2 = (const GPOS_AnchorFormat2*)table;
1101             TRACE("Anchor Format 2\n");
1102             pt->x = (short)GET_BE_WORD(anchor2->XCoordinate);
1103             pt->y = (short)GET_BE_WORD(anchor2->YCoordinate);
1104             break;
1105         }
1106         case 3:
1107         {
1108             int offset;
1109             const GPOS_AnchorFormat3* anchor3 = (const GPOS_AnchorFormat3*)table;
1110             TRACE("Anchor Format 3\n");
1111             pt->x = (short)GET_BE_WORD(anchor3->XCoordinate);
1112             pt->y = (short)GET_BE_WORD(anchor3->YCoordinate);
1113             offset = GET_BE_WORD(anchor3->XDeviceTable);
1114             TRACE("ppem %i\n",ppem);
1115             if (offset)
1116             {
1117                 const OT_DeviceTable* DeviceTableX = NULL;
1118                 DeviceTableX = (const OT_DeviceTable*)((const BYTE*)anchor3 + offset);
1119                 pt->x += GPOS_get_device_table_value(DeviceTableX, ppem);
1120             }
1121             offset = GET_BE_WORD(anchor3->YDeviceTable);
1122             if (offset)
1123             {
1124                 const OT_DeviceTable* DeviceTableY = NULL;
1125                 DeviceTableY = (const OT_DeviceTable*)((const BYTE*)anchor3 + offset);
1126                 pt->y += GPOS_get_device_table_value(DeviceTableY, ppem);
1127             }
1128             break;
1129         }
1130         default:
1131             ERR("Unknown Anchor Format %i\n",GET_BE_WORD(anchor1->AnchorFormat));
1132             pt->x = 0;
1133             pt->y = 0;
1134     }
1135 }
1136
1137 static void GPOS_convert_design_units_to_device(LPOUTLINETEXTMETRICW lpotm, LPLOGFONTW lplogfont, int desX, int desY, double *devX, double *devY)
1138 {
1139     int emHeight = lpotm->otmTextMetrics.tmAscent + lpotm->otmTextMetrics.tmDescent - lpotm->otmTextMetrics.tmInternalLeading;
1140
1141     TRACE("emHeight %i lfWidth %i\n",emHeight, lplogfont->lfWidth);
1142     *devX = (desX * emHeight) / (double)lpotm->otmEMSquare;
1143     *devY = (desY * emHeight) / (double)lpotm->otmEMSquare;
1144     if (lplogfont->lfWidth)
1145         FIXME("Font with lfWidth set no handled properly\n");
1146 }
1147
1148 static INT GPOS_get_value_record(WORD ValueFormat, const WORD data[], GPOS_ValueRecord *record)
1149 {
1150     INT offset = 0;
1151     if (ValueFormat & 0x0001) { if (data) record->XPlacement = GET_BE_WORD(data[offset]); offset++; }
1152     if (ValueFormat & 0x0002) { if (data) record->YPlacement = GET_BE_WORD(data[offset]); offset++; }
1153     if (ValueFormat & 0x0004) { if (data) record->XAdvance   = GET_BE_WORD(data[offset]); offset++; }
1154     if (ValueFormat & 0x0008) { if (data) record->YAdvance   = GET_BE_WORD(data[offset]); offset++; }
1155     if (ValueFormat & 0x0010) { if (data) record->XPlaDevice = GET_BE_WORD(data[offset]); offset++; }
1156     if (ValueFormat & 0x0020) { if (data) record->YPlaDevice = GET_BE_WORD(data[offset]); offset++; }
1157     if (ValueFormat & 0x0040) { if (data) record->XAdvDevice = GET_BE_WORD(data[offset]); offset++; }
1158     if (ValueFormat & 0x0080) { if (data) record->YAdvDevice = GET_BE_WORD(data[offset]); offset++; }
1159     return offset;
1160 }
1161
1162 static VOID GPOS_get_value_record_offsets(const BYTE* head, GPOS_ValueRecord *ValueRecord,  WORD ValueFormat, INT ppem, LPPOINT ptPlacement, LPPOINT ptAdvance)
1163 {
1164     if (ValueFormat & 0x0001) ptPlacement->x += (short)ValueRecord->XPlacement;
1165     if (ValueFormat & 0x0002) ptPlacement->y += (short)ValueRecord->YPlacement;
1166     if (ValueFormat & 0x0004) ptAdvance->x += (short)ValueRecord->XAdvance;
1167     if (ValueFormat & 0x0008) ptAdvance->y += (short)ValueRecord->YAdvance;
1168     if (ValueFormat & 0x0010) ptPlacement->x += GPOS_get_device_table_value((const OT_DeviceTable*)(head + ValueRecord->XPlaDevice), ppem);
1169     if (ValueFormat & 0x0020) ptPlacement->y += GPOS_get_device_table_value((const OT_DeviceTable*)(head + ValueRecord->YPlaDevice), ppem);
1170     if (ValueFormat & 0x0040) ptAdvance->x += GPOS_get_device_table_value((const OT_DeviceTable*)(head + ValueRecord->XAdvDevice), ppem);
1171     if (ValueFormat & 0x0080) ptAdvance->y += GPOS_get_device_table_value((const OT_DeviceTable*)(head + ValueRecord->YAdvDevice), ppem);
1172     if (ValueFormat & 0xFF00) FIXME("Unhandled Value Format %x\n",ValueFormat&0xFF00);
1173 }
1174
1175 static const BYTE *GPOS_get_subtable(const OT_LookupTable *look, int index)
1176 {
1177     int offset = GET_BE_WORD(look->SubTable[index]);
1178
1179     if (GET_BE_WORD(look->LookupType) == 9)
1180     {
1181         const GPOS_ExtensionPosFormat1 *ext = (const GPOS_ExtensionPosFormat1 *)((const BYTE *)look + offset);
1182         if (GET_BE_WORD(ext->PosFormat) == 1)
1183         {
1184             offset += GET_BE_DWORD(ext->ExtensionOffset);
1185         }
1186         else
1187         {
1188             FIXME("Unhandled Extension Positioning Format %i\n",GET_BE_WORD(ext->PosFormat));
1189         }
1190     }
1191     return (const BYTE *)look + offset;
1192 }
1193
1194 static VOID GPOS_apply_SingleAdjustment(const OT_LookupTable *look, const SCRIPT_ANALYSIS *analysis, const WORD *glyphs, INT glyph_index,
1195                                         INT glyph_count, INT ppem, LPPOINT ptAdjust, LPPOINT ptAdvance)
1196 {
1197     int j;
1198
1199     TRACE("Single Adjustment Positioning Subtable\n");
1200
1201     for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
1202     {
1203         const GPOS_SinglePosFormat1 *spf1 = (const GPOS_SinglePosFormat1*)GPOS_get_subtable(look, j);
1204         WORD offset;
1205         if (GET_BE_WORD(spf1->PosFormat) == 1)
1206         {
1207             offset = GET_BE_WORD(spf1->Coverage);
1208             if (GSUB_is_glyph_covered((const BYTE*)spf1+offset, glyphs[glyph_index]) != -1)
1209             {
1210                 GPOS_ValueRecord ValueRecord = {0,0,0,0,0,0,0,0};
1211                 WORD ValueFormat = GET_BE_WORD(spf1->ValueFormat);
1212                 GPOS_get_value_record(ValueFormat, spf1->Value, &ValueRecord);
1213                 GPOS_get_value_record_offsets((const BYTE*)spf1, &ValueRecord,  ValueFormat, ppem, ptAdjust, ptAdvance);
1214                 TRACE("Glyph Adjusted by %i,%i\n",ValueRecord.XPlacement,ValueRecord.YPlacement);
1215             }
1216         }
1217         else if (GET_BE_WORD(spf1->PosFormat) == 2)
1218         {
1219             int index;
1220             const GPOS_SinglePosFormat2 *spf2;
1221             spf2 = (const GPOS_SinglePosFormat2*)spf1;
1222             offset = GET_BE_WORD(spf2->Coverage);
1223             index  = GSUB_is_glyph_covered((const BYTE*)spf2+offset, glyphs[glyph_index]);
1224             if (index != -1)
1225             {
1226                 int size;
1227                 GPOS_ValueRecord ValueRecord = {0,0,0,0,0,0,0,0};
1228                 WORD ValueFormat = GET_BE_WORD(spf2->ValueFormat);
1229                 size = GPOS_get_value_record(ValueFormat, spf2->Value, &ValueRecord);
1230                 if (index > 0)
1231                 {
1232                     offset = size * index;
1233                     GPOS_get_value_record(ValueFormat, &spf2->Value[offset], &ValueRecord);
1234                 }
1235                 GPOS_get_value_record_offsets((const BYTE*)spf2, &ValueRecord,  ValueFormat, ppem, ptAdjust, ptAdvance);
1236                 TRACE("Glyph Adjusted by %i,%i\n",ValueRecord.XPlacement,ValueRecord.YPlacement);
1237             }
1238         }
1239         else
1240             FIXME("Single Adjustment Positioning: Format %i Unhandled\n",GET_BE_WORD(spf1->PosFormat));
1241     }
1242 }
1243
1244 static void apply_pair_value( const void *pos_table, WORD val_fmt1, WORD val_fmt2, const WORD *pair,
1245                               INT ppem, POINT *adjust, POINT *advance )
1246 {
1247     GPOS_ValueRecord val_rec1 = {0,0,0,0,0,0,0,0};
1248     GPOS_ValueRecord val_rec2 = {0,0,0,0,0,0,0,0};
1249     INT size;
1250
1251     size = GPOS_get_value_record( val_fmt1, pair, &val_rec1 );
1252     GPOS_get_value_record( val_fmt2, pair + size, &val_rec2 );
1253
1254     if (val_fmt1)
1255     {
1256         GPOS_get_value_record_offsets( pos_table, &val_rec1, val_fmt1, ppem, adjust, advance );
1257         TRACE( "Glyph 1 resulting cumulative offset is %i,%i design units\n", adjust[0].x, adjust[0].y );
1258         TRACE( "Glyph 1 resulting cumulative advance is %i,%i design units\n", advance[0].x, advance[0].y );
1259     }
1260     if (val_fmt2)
1261     {
1262         GPOS_get_value_record_offsets( pos_table, &val_rec2, val_fmt2, ppem, adjust + 1, advance + 1 );
1263         TRACE( "Glyph 2 resulting cumulative offset is %i,%i design units\n", adjust[1].x, adjust[1].y );
1264         TRACE( "Glyph 2 resulting cumulative advance is %i,%i design units\n", advance[1].x, advance[1].y );
1265     }
1266 }
1267
1268 static INT GPOS_apply_PairAdjustment(const OT_LookupTable *look, const SCRIPT_ANALYSIS *analysis, const WORD *glyphs, INT glyph_index,
1269                                      INT glyph_count, INT ppem, LPPOINT ptAdjust, LPPOINT ptAdvance)
1270 {
1271     int j;
1272     int write_dir = (analysis->fRTL && !analysis->fLogicalOrder) ? -1 : 1;
1273
1274     if (glyph_index + write_dir < 0 || glyph_index + write_dir >= glyph_count) return glyph_index + 1;
1275
1276     TRACE("Pair Adjustment Positioning Subtable\n");
1277
1278     for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
1279     {
1280         const GPOS_PairPosFormat1 *ppf1 = (const GPOS_PairPosFormat1*)GPOS_get_subtable(look, j);
1281         WORD offset;
1282         if (GET_BE_WORD(ppf1->PosFormat) == 1)
1283         {
1284             int index;
1285             WORD ValueFormat1 = GET_BE_WORD(ppf1->ValueFormat1);
1286             WORD ValueFormat2 = GET_BE_WORD(ppf1->ValueFormat2);
1287             INT val_fmt1_size = GPOS_get_value_record( ValueFormat1, NULL, NULL );
1288             INT val_fmt2_size = GPOS_get_value_record( ValueFormat2, NULL, NULL );
1289             offset = GET_BE_WORD(ppf1->Coverage);
1290             index = GSUB_is_glyph_covered((const BYTE*)ppf1+offset, glyphs[glyph_index]);
1291             if (index != -1 && index < GET_BE_WORD(ppf1->PairSetCount))
1292             {
1293                 int k;
1294                 int pair_count;
1295                 const GPOS_PairSet *ps;
1296                 const GPOS_PairValueRecord *pair_val_rec;
1297                 offset = GET_BE_WORD(ppf1->PairSetOffset[index]);
1298                 ps = (const GPOS_PairSet*)((const BYTE*)ppf1+offset);
1299                 pair_count = GET_BE_WORD(ps->PairValueCount);
1300                 pair_val_rec = ps->PairValueRecord;
1301                 for (k = 0; k < pair_count; k++)
1302                 {
1303                     WORD second_glyph = GET_BE_WORD(pair_val_rec->SecondGlyph);
1304                     if (glyphs[glyph_index+write_dir] == second_glyph)
1305                     {
1306                         int next = 1;
1307                         TRACE("Format 1: Found Pair %x,%x\n",glyphs[glyph_index],glyphs[glyph_index+write_dir]);
1308                         apply_pair_value( ppf1, ValueFormat1, ValueFormat2, pair_val_rec->Value1, ppem, ptAdjust, ptAdvance );
1309                         if (ValueFormat2) next++;
1310                         return glyph_index + next;
1311                     }
1312                     pair_val_rec = (const GPOS_PairValueRecord *)(pair_val_rec->Value1 + val_fmt1_size + val_fmt2_size);
1313                 }
1314             }
1315         }
1316         else if (GET_BE_WORD(ppf1->PosFormat) == 2)
1317         {
1318             const GPOS_PairPosFormat2 *ppf2 = (const GPOS_PairPosFormat2*)ppf1;
1319             int index;
1320             WORD ValueFormat1 = GET_BE_WORD( ppf2->ValueFormat1 );
1321             WORD ValueFormat2 = GET_BE_WORD( ppf2->ValueFormat2 );
1322             INT val_fmt1_size = GPOS_get_value_record( ValueFormat1, NULL, NULL );
1323             INT val_fmt2_size = GPOS_get_value_record( ValueFormat2, NULL, NULL );
1324             WORD class1_count = GET_BE_WORD( ppf2->Class1Count );
1325             WORD class2_count = GET_BE_WORD( ppf2->Class2Count );
1326
1327             offset = GET_BE_WORD( ppf2->Coverage );
1328             index = GSUB_is_glyph_covered( (const BYTE*)ppf2 + offset, glyphs[glyph_index] );
1329             if (index != -1)
1330             {
1331                 WORD class1, class2;
1332                 class1 = OT_get_glyph_class( (const BYTE *)ppf2 + GET_BE_WORD(ppf2->ClassDef1), glyphs[glyph_index] );
1333                 class2 = OT_get_glyph_class( (const BYTE *)ppf2 + GET_BE_WORD(ppf2->ClassDef2), glyphs[glyph_index + write_dir] );
1334                 if (class1 < class1_count && class2 < class2_count)
1335                 {
1336                     const WORD *pair_val = ppf2->Class1Record + (class1 * class2_count + class2) * (val_fmt1_size + val_fmt2_size);
1337                     int next = 1;
1338
1339                     TRACE( "Format 2: Found Pair %x,%x\n", glyphs[glyph_index], glyphs[glyph_index + write_dir] );
1340
1341                     apply_pair_value( ppf2, ValueFormat1, ValueFormat2, pair_val, ppem, ptAdjust, ptAdvance );
1342                     if (ValueFormat2) next++;
1343                     return glyph_index + next;
1344                 }
1345             }
1346         }
1347         else
1348             FIXME("Pair Adjustment Positioning: Format %i Unhandled\n",GET_BE_WORD(ppf1->PosFormat));
1349     }
1350     return glyph_index+1;
1351 }
1352
1353 static VOID GPOS_apply_CursiveAttachment(const OT_LookupTable *look, const SCRIPT_ANALYSIS *analysis, const WORD *glyphs, INT glyph_index,
1354                                      INT glyph_count, INT ppem, LPPOINT pt)
1355 {
1356     int j;
1357     int write_dir = (analysis->fRTL && !analysis->fLogicalOrder) ? -1 : 1;
1358
1359     if (glyph_index + write_dir < 0 || glyph_index + write_dir >= glyph_count) return;
1360
1361     TRACE("Cursive Attachment Positioning Subtable\n");
1362
1363     for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
1364     {
1365         const GPOS_CursivePosFormat1 *cpf1 = (const GPOS_CursivePosFormat1 *)GPOS_get_subtable(look, j);
1366         if (GET_BE_WORD(cpf1->PosFormat) == 1)
1367         {
1368             int index_exit, index_entry;
1369             WORD offset = GET_BE_WORD( cpf1->Coverage );
1370             index_exit = GSUB_is_glyph_covered((const BYTE*)cpf1+offset, glyphs[glyph_index]);
1371             if (index_exit != -1 && cpf1->EntryExitRecord[index_exit].ExitAnchor!= 0)
1372             {
1373                 index_entry = GSUB_is_glyph_covered((const BYTE*)cpf1+offset, glyphs[glyph_index+write_dir]);
1374                 if (index_entry != -1 && cpf1->EntryExitRecord[index_entry].EntryAnchor != 0)
1375                 {
1376                     POINT exit_pt, entry_pt;
1377                     offset = GET_BE_WORD(cpf1->EntryExitRecord[index_exit].ExitAnchor);
1378                     GPOS_get_anchor_values((const BYTE*)cpf1 + offset, &exit_pt, ppem);
1379                     offset = GET_BE_WORD(cpf1->EntryExitRecord[index_entry].EntryAnchor);
1380                     GPOS_get_anchor_values((const BYTE*)cpf1 + offset, &entry_pt, ppem);
1381                     TRACE("Found linkage %x[%i,%i] %x[%i,%i]\n",glyphs[glyph_index], exit_pt.x,exit_pt.y, glyphs[glyph_index+write_dir], entry_pt.x, entry_pt.y);
1382                     pt->x = entry_pt.x - exit_pt.x;
1383                     pt->y = entry_pt.y - exit_pt.y;
1384                     return;
1385                 }
1386             }
1387         }
1388         else
1389             FIXME("Cursive Attachment Positioning: Format %i Unhandled\n",GET_BE_WORD(cpf1->PosFormat));
1390     }
1391     return;
1392 }
1393
1394 static int GPOS_apply_MarkToBase(ScriptCache *psc, const OT_LookupTable *look, const SCRIPT_ANALYSIS *analysis, const WORD *glyphs, INT glyph_index, INT glyph_count, INT ppem, LPPOINT pt)
1395 {
1396     int j;
1397     int write_dir = (analysis->fRTL && !analysis->fLogicalOrder) ? -1 : 1;
1398     void *glyph_class_table = NULL;
1399     int rc = -1;
1400
1401     if (psc->GDEF_Table)
1402     {
1403         const GDEF_Header *header = psc->GDEF_Table;
1404         WORD offset = GET_BE_WORD( header->GlyphClassDef );
1405         if (offset)
1406             glyph_class_table = (BYTE *)psc->GDEF_Table + offset;
1407     }
1408
1409     TRACE("MarkToBase Attachment Positioning Subtable\n");
1410
1411     for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
1412     {
1413         const GPOS_MarkBasePosFormat1 *mbpf1 = (const GPOS_MarkBasePosFormat1 *)GPOS_get_subtable(look, j);
1414         if (GET_BE_WORD(mbpf1->PosFormat) == 1)
1415         {
1416             int offset = GET_BE_WORD(mbpf1->MarkCoverage);
1417             int mark_index;
1418             mark_index = GSUB_is_glyph_covered((const BYTE*)mbpf1+offset, glyphs[glyph_index]);
1419             if (mark_index != -1)
1420             {
1421                 int base_index;
1422                 int base_glyph = glyph_index - write_dir;
1423
1424                 if (glyph_class_table)
1425                 {
1426                     while (OT_get_glyph_class(glyph_class_table, glyphs[base_glyph]) == MarkGlyph && base_glyph > 0 && base_glyph < glyph_count)
1427                         base_glyph -= write_dir;
1428                 }
1429
1430                 offset = GET_BE_WORD(mbpf1->BaseCoverage);
1431                 base_index = GSUB_is_glyph_covered((const BYTE*)mbpf1+offset, glyphs[base_glyph]);
1432                 if (base_index != -1)
1433                 {
1434                     const GPOS_MarkArray *ma;
1435                     const GPOS_MarkRecord *mr;
1436                     const GPOS_BaseArray *ba;
1437                     const GPOS_BaseRecord *br;
1438                     int mark_class;
1439                     int class_count = GET_BE_WORD(mbpf1->ClassCount);
1440                     int baserecord_size;
1441                     POINT base_pt;
1442                     POINT mark_pt;
1443                     TRACE("Mark %x(%i) and base %x(%i)\n",glyphs[glyph_index], mark_index, glyphs[base_glyph], base_index);
1444                     offset = GET_BE_WORD(mbpf1->MarkArray);
1445                     ma = (const GPOS_MarkArray*)((const BYTE*)mbpf1 + offset);
1446                     if (mark_index > GET_BE_WORD(ma->MarkCount))
1447                     {
1448                         ERR("Mark index exeeded mark count\n");
1449                         return -1;
1450                     }
1451                     mr = &ma->MarkRecord[mark_index];
1452                     mark_class = GET_BE_WORD(mr->Class);
1453                     TRACE("Mark Class %i total classes %i\n",mark_class,class_count);
1454                     offset = GET_BE_WORD(mbpf1->BaseArray);
1455                     ba = (const GPOS_BaseArray*)((const BYTE*)mbpf1 + offset);
1456                     baserecord_size = class_count * sizeof(WORD);
1457                     br = (const GPOS_BaseRecord*)((const BYTE*)ba + sizeof(WORD) + (baserecord_size * base_index));
1458                     offset = GET_BE_WORD(br->BaseAnchor[mark_class]);
1459                     GPOS_get_anchor_values((const BYTE*)ba + offset, &base_pt, ppem);
1460                     offset = GET_BE_WORD(mr->MarkAnchor);
1461                     GPOS_get_anchor_values((const BYTE*)ma + offset, &mark_pt, ppem);
1462                     TRACE("Offset on base is %i,%i design units\n",base_pt.x,base_pt.y);
1463                     TRACE("Offset on mark is %i,%i design units\n",mark_pt.x, mark_pt.y);
1464                     pt->x += base_pt.x - mark_pt.x;
1465                     pt->y += base_pt.y - mark_pt.y;
1466                     TRACE("Resulting cumulative offset is %i,%i design units\n",pt->x,pt->y);
1467                     rc = base_glyph;
1468                 }
1469             }
1470         }
1471         else
1472             FIXME("Unhandled Mark To Base Format %i\n",GET_BE_WORD(mbpf1->PosFormat));
1473     }
1474     return rc;
1475 }
1476
1477 static VOID GPOS_apply_MarkToLigature(const OT_LookupTable *look, const SCRIPT_ANALYSIS *analysis, const WORD *glyphs, INT glyph_index,
1478                                       INT glyph_count, INT ppem, LPPOINT pt)
1479 {
1480     int j;
1481     int write_dir = (analysis->fRTL && !analysis->fLogicalOrder) ? -1 : 1;
1482
1483     TRACE("MarkToLigature Attachment Positioning Subtable\n");
1484
1485     for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
1486     {
1487         const GPOS_MarkLigPosFormat1 *mlpf1 = (const GPOS_MarkLigPosFormat1 *)GPOS_get_subtable(look, j);
1488         if (GET_BE_WORD(mlpf1->PosFormat) == 1)
1489         {
1490             int offset = GET_BE_WORD(mlpf1->MarkCoverage);
1491             int mark_index;
1492             mark_index = GSUB_is_glyph_covered((const BYTE*)mlpf1+offset, glyphs[glyph_index]);
1493             if (mark_index != -1)
1494             {
1495                 int ligature_index;
1496                 offset = GET_BE_WORD(mlpf1->LigatureCoverage);
1497                 ligature_index = GSUB_is_glyph_covered((const BYTE*)mlpf1+offset, glyphs[glyph_index - write_dir]);
1498                 if (ligature_index != -1)
1499                 {
1500                     const GPOS_MarkArray *ma;
1501                     const GPOS_MarkRecord *mr;
1502
1503                     const GPOS_LigatureArray *la;
1504                     const GPOS_LigatureAttach *lt;
1505                     int mark_class;
1506                     int class_count = GET_BE_WORD(mlpf1->ClassCount);
1507                     int component_count;
1508                     int component_size;
1509                     int i;
1510                     POINT ligature_pt;
1511                     POINT mark_pt;
1512
1513                     TRACE("Mark %x(%i) and ligature %x(%i)\n",glyphs[glyph_index], mark_index, glyphs[glyph_index - write_dir], ligature_index);
1514                     offset = GET_BE_WORD(mlpf1->MarkArray);
1515                     ma = (const GPOS_MarkArray*)((const BYTE*)mlpf1 + offset);
1516                     if (mark_index > GET_BE_WORD(ma->MarkCount))
1517                     {
1518                         ERR("Mark index exeeded mark count\n");
1519                         return;
1520                     }
1521                     mr = &ma->MarkRecord[mark_index];
1522                     mark_class = GET_BE_WORD(mr->Class);
1523                     TRACE("Mark Class %i total classes %i\n",mark_class,class_count);
1524                     offset = GET_BE_WORD(mlpf1->LigatureArray);
1525                     la = (const GPOS_LigatureArray*)((const BYTE*)mlpf1 + offset);
1526                     if (ligature_index > GET_BE_WORD(la->LigatureCount))
1527                     {
1528                         ERR("Ligature index exeeded ligature count\n");
1529                         return;
1530                     }
1531                     offset = GET_BE_WORD(la->LigatureAttach[ligature_index]);
1532                     lt = (const GPOS_LigatureAttach*)((const BYTE*)la + offset);
1533
1534                     component_count = GET_BE_WORD(lt->ComponentCount);
1535                     component_size = class_count * sizeof(WORD);
1536                     offset = 0;
1537                     for (i = 0; i < component_count && !offset; i++)
1538                     {
1539                         int k;
1540                         const GPOS_ComponentRecord *cr = (const GPOS_ComponentRecord*)((const BYTE*)lt->ComponentRecord + (component_size * i));
1541                         for (k = 0; k < class_count && !offset; k++)
1542                             offset = GET_BE_WORD(cr->LigatureAnchor[k]);
1543                         cr = (const GPOS_ComponentRecord*)((const BYTE*)cr + component_size);
1544                     }
1545                     if (!offset)
1546                     {
1547                         ERR("Failed to find avalible ligature connection point\n");
1548                         return;
1549                     }
1550
1551                     GPOS_get_anchor_values((const BYTE*)lt + offset, &ligature_pt, ppem);
1552                     offset = GET_BE_WORD(mr->MarkAnchor);
1553                     GPOS_get_anchor_values((const BYTE*)ma + offset, &mark_pt, ppem);
1554                     TRACE("Offset on ligature is %i,%i design units\n",ligature_pt.x,ligature_pt.y);
1555                     TRACE("Offset on mark is %i,%i design units\n",mark_pt.x, mark_pt.y);
1556                     pt->x += ligature_pt.x - mark_pt.x;
1557                     pt->y += ligature_pt.y - mark_pt.y;
1558                     TRACE("Resulting cumulative offset is %i,%i design units\n",pt->x,pt->y);
1559                 }
1560             }
1561         }
1562         else
1563             FIXME("Unhandled Mark To Ligature Format %i\n",GET_BE_WORD(mlpf1->PosFormat));
1564     }
1565 }
1566
1567 static BOOL GPOS_apply_MarkToMark(const OT_LookupTable *look, const SCRIPT_ANALYSIS *analysis, const WORD *glyphs, INT glyph_index,
1568                                   INT glyph_count, INT ppem, LPPOINT pt)
1569 {
1570     int j;
1571     BOOL rc = FALSE;
1572     int write_dir = (analysis->fRTL && !analysis->fLogicalOrder) ? -1 : 1;
1573
1574     TRACE("MarkToMark Attachment Positioning Subtable\n");
1575
1576     for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
1577     {
1578         const GPOS_MarkMarkPosFormat1 *mmpf1 = (const GPOS_MarkMarkPosFormat1 *)GPOS_get_subtable(look, j);
1579         if (GET_BE_WORD(mmpf1->PosFormat) == 1)
1580         {
1581             int offset = GET_BE_WORD(mmpf1->Mark1Coverage);
1582             int mark_index;
1583             mark_index = GSUB_is_glyph_covered((const BYTE*)mmpf1+offset, glyphs[glyph_index]);
1584             if (mark_index != -1)
1585             {
1586                 int mark2_index;
1587                 offset = GET_BE_WORD(mmpf1->Mark2Coverage);
1588                 mark2_index = GSUB_is_glyph_covered((const BYTE*)mmpf1+offset, glyphs[glyph_index - write_dir]);
1589                 if (mark2_index != -1)
1590                 {
1591                     const GPOS_MarkArray *ma;
1592                     const GPOS_MarkRecord *mr;
1593                     const GPOS_Mark2Array *m2a;
1594                     const GPOS_Mark2Record *m2r;
1595                     int mark_class;
1596                     int class_count = GET_BE_WORD(mmpf1->ClassCount);
1597                     int mark2record_size;
1598                     POINT mark2_pt;
1599                     POINT mark_pt;
1600                     TRACE("Mark %x(%i) and Mark2 %x(%i)\n",glyphs[glyph_index], mark_index, glyphs[glyph_index - write_dir], mark2_index);
1601                     offset = GET_BE_WORD(mmpf1->Mark1Array);
1602                     ma = (const GPOS_MarkArray*)((const BYTE*)mmpf1 + offset);
1603                     if (mark_index > GET_BE_WORD(ma->MarkCount))
1604                     {
1605                         ERR("Mark index exceeded mark count\n");
1606                         return FALSE;
1607                     }
1608                     mr = &ma->MarkRecord[mark_index];
1609                     mark_class = GET_BE_WORD(mr->Class);
1610                     TRACE("Mark Class %i total classes %i\n",mark_class,class_count);
1611                     offset = GET_BE_WORD(mmpf1->Mark2Array);
1612                     m2a = (const GPOS_Mark2Array*)((const BYTE*)mmpf1 + offset);
1613                     mark2record_size = class_count * sizeof(WORD);
1614                     m2r = (const GPOS_Mark2Record*)((const BYTE*)m2a + sizeof(WORD) + (mark2record_size * mark2_index));
1615                     offset = GET_BE_WORD(m2r->Mark2Anchor[mark_class]);
1616                     GPOS_get_anchor_values((const BYTE*)m2a + offset, &mark2_pt, ppem);
1617                     offset = GET_BE_WORD(mr->MarkAnchor);
1618                     GPOS_get_anchor_values((const BYTE*)ma + offset, &mark_pt, ppem);
1619                     TRACE("Offset on mark2 is %i,%i design units\n",mark2_pt.x,mark2_pt.y);
1620                     TRACE("Offset on mark is %i,%i design units\n",mark_pt.x, mark_pt.y);
1621                     pt->x += mark2_pt.x - mark_pt.x;
1622                     pt->y += mark2_pt.y - mark_pt.y;
1623                     TRACE("Resulting cumulative offset is %i,%i design units\n",pt->x,pt->y);
1624                     rc = TRUE;
1625                 }
1626             }
1627         }
1628         else
1629             FIXME("Unhandled Mark To Mark Format %i\n",GET_BE_WORD(mmpf1->PosFormat));
1630     }
1631     return rc;
1632 }
1633
1634 static INT GPOS_apply_ChainContextPos(ScriptCache *psc, LPOUTLINETEXTMETRICW lpotm, LPLOGFONTW lplogfont, const SCRIPT_ANALYSIS *analysis, INT* piAdvance,
1635                                       const OT_LookupList *lookup, const OT_LookupTable *look, const WORD *glyphs, INT glyph_index,
1636                                       INT glyph_count, INT ppem, GOFFSET *pGoffset)
1637 {
1638     int j;
1639     int write_dir = (analysis->fRTL && !analysis->fLogicalOrder) ? -1 : 1;
1640
1641     TRACE("Chaining Contextual Positioning Subtable\n");
1642
1643     for (j = 0; j < GET_BE_WORD(look->SubTableCount); j++)
1644     {
1645         int offset;
1646         const GPOS_ChainContextPosFormat3_1 *ccpf3 = (GPOS_ChainContextPosFormat3_1 *)GPOS_get_subtable(look, j);
1647         int dirLookahead = write_dir;
1648         int dirBacktrack = -1 * write_dir;
1649
1650         if (GET_BE_WORD(ccpf3->PosFormat) == 1)
1651         {
1652             FIXME("  TODO: subtype 1 (Simple Chaining Context Glyph Positioning)\n");
1653             continue;
1654         }
1655         else if (GET_BE_WORD(ccpf3->PosFormat) == 2)
1656         {
1657             FIXME("  TODO: subtype 2 (Class-based Chaining Context Glyph Positioning)\n");
1658             continue;
1659         }
1660         else if (GET_BE_WORD(ccpf3->PosFormat) == 3)
1661         {
1662             int k;
1663             int indexGlyphs;
1664             const GPOS_ChainContextPosFormat3_2 *ccpf3_2;
1665             const GPOS_ChainContextPosFormat3_3 *ccpf3_3;
1666             const GPOS_ChainContextPosFormat3_4 *ccpf3_4;
1667
1668             TRACE("  subtype 3 (Coverage-based Chaining Context Glyph Positioning)\n");
1669
1670             for (k = 0; k < GET_BE_WORD(ccpf3->BacktrackGlyphCount); k++)
1671             {
1672                 offset = GET_BE_WORD(ccpf3->Coverage[k]);
1673                 if (GSUB_is_glyph_covered((const BYTE*)ccpf3+offset, glyphs[glyph_index + (dirBacktrack * (k+1))]) == -1)
1674                     break;
1675             }
1676             if (k != GET_BE_WORD(ccpf3->BacktrackGlyphCount))
1677                 continue;
1678             TRACE("Matched Backtrack\n");
1679
1680             ccpf3_2 = (const GPOS_ChainContextPosFormat3_2*)((BYTE *)ccpf3 +
1681                     FIELD_OFFSET(GPOS_ChainContextPosFormat3_1, Coverage[GET_BE_WORD(ccpf3->BacktrackGlyphCount)]));
1682
1683             indexGlyphs = GET_BE_WORD(ccpf3_2->InputGlyphCount);
1684             for (k = 0; k < indexGlyphs; k++)
1685             {
1686                 offset = GET_BE_WORD(ccpf3_2->Coverage[k]);
1687                 if (GSUB_is_glyph_covered((const BYTE*)ccpf3+offset, glyphs[glyph_index + (write_dir * k)]) == -1)
1688                     break;
1689             }
1690             if (k != indexGlyphs)
1691                 continue;
1692             TRACE("Matched IndexGlyphs\n");
1693
1694             ccpf3_3 = (const GPOS_ChainContextPosFormat3_3*)((BYTE *)ccpf3_2 +
1695                     FIELD_OFFSET(GPOS_ChainContextPosFormat3_2, Coverage[GET_BE_WORD(ccpf3_2->InputGlyphCount)]));
1696
1697             for (k = 0; k < GET_BE_WORD(ccpf3_3->LookaheadGlyphCount); k++)
1698             {
1699                 offset = GET_BE_WORD(ccpf3_3->Coverage[k]);
1700                 if (GSUB_is_glyph_covered((const BYTE*)ccpf3+offset, glyphs[glyph_index + (dirLookahead * (indexGlyphs + k))]) == -1)
1701                     break;
1702             }
1703             if (k != GET_BE_WORD(ccpf3_3->LookaheadGlyphCount))
1704                 continue;
1705             TRACE("Matched LookAhead\n");
1706
1707             ccpf3_4 = (const GPOS_ChainContextPosFormat3_4*)((BYTE *)ccpf3_3 +
1708                     FIELD_OFFSET(GPOS_ChainContextPosFormat3_3, Coverage[GET_BE_WORD(ccpf3_3->LookaheadGlyphCount)]));
1709
1710             if (GET_BE_WORD(ccpf3_4->PosCount))
1711             {
1712                 for (k = 0; k < GET_BE_WORD(ccpf3_4->PosCount); k++)
1713                 {
1714                     int lookupIndex = GET_BE_WORD(ccpf3_4->PosLookupRecord[k].LookupListIndex);
1715                     int SequenceIndex = GET_BE_WORD(ccpf3_4->PosLookupRecord[k].SequenceIndex) * write_dir;
1716
1717                     TRACE("Position: %i -> %i %i\n",k, SequenceIndex, lookupIndex);
1718                     GPOS_apply_lookup(psc, lpotm, lplogfont, analysis, piAdvance, lookup, lookupIndex, glyphs, glyph_index + SequenceIndex, glyph_count, pGoffset);
1719                 }
1720                 return glyph_index + indexGlyphs + GET_BE_WORD(ccpf3_3->LookaheadGlyphCount);
1721             }
1722             else return glyph_index + 1;
1723         }
1724         else
1725             FIXME("Unhandled Chaining Contextual Positioning Format %i\n",GET_BE_WORD(ccpf3->PosFormat));
1726     }
1727     return glyph_index + 1;
1728 }
1729
1730 static INT GPOS_apply_lookup(ScriptCache *psc, LPOUTLINETEXTMETRICW lpotm, LPLOGFONTW lplogfont, const SCRIPT_ANALYSIS *analysis, INT* piAdvance, const OT_LookupList* lookup, INT lookup_index, const WORD *glyphs, INT glyph_index, INT glyph_count, GOFFSET *pGoffset)
1731 {
1732     int offset;
1733     const OT_LookupTable *look;
1734     int ppem = lpotm->otmTextMetrics.tmAscent + lpotm->otmTextMetrics.tmDescent - lpotm->otmTextMetrics.tmInternalLeading;
1735     WORD type;
1736
1737     offset = GET_BE_WORD(lookup->Lookup[lookup_index]);
1738     look = (const OT_LookupTable*)((const BYTE*)lookup + offset);
1739     type = GET_BE_WORD(look->LookupType);
1740     TRACE("type %i, flag %x, subtables %i\n",type,GET_BE_WORD(look->LookupFlag),GET_BE_WORD(look->SubTableCount));
1741     if (type == 9)
1742     {
1743         if (GET_BE_WORD(look->SubTableCount))
1744         {
1745             const GPOS_ExtensionPosFormat1 *ext = (const GPOS_ExtensionPosFormat1 *)((const BYTE *)look + GET_BE_WORD(look->SubTable[0]));
1746             if (GET_BE_WORD(ext->PosFormat) == 1)
1747             {
1748                 type = GET_BE_WORD(ext->ExtensionLookupType);
1749                 TRACE("extension type %i\n",type);
1750             }
1751             else
1752             {
1753                 FIXME("Unhandled Extension Positioning Format %i\n",GET_BE_WORD(ext->PosFormat));
1754             }
1755         }
1756         else
1757         {
1758             WARN("lookup type is Extension Positioning but no extension subtable exists\n");
1759         }
1760     }
1761     switch (type)
1762     {
1763         case 1:
1764         {
1765             double devX, devY;
1766             POINT adjust = {0,0};
1767             POINT advance = {0,0};
1768             GPOS_apply_SingleAdjustment(look, analysis, glyphs, glyph_index, glyph_count, ppem, &adjust, &advance);
1769             if (adjust.x || adjust.y)
1770             {
1771                 GPOS_convert_design_units_to_device(lpotm, lplogfont, adjust.x, adjust.y, &devX, &devY);
1772                 pGoffset[glyph_index].du += round(devX);
1773                 pGoffset[glyph_index].dv += round(devY);
1774             }
1775             if (advance.x || advance.y)
1776             {
1777                 GPOS_convert_design_units_to_device(lpotm, lplogfont, advance.x, advance.y, &devX, &devY);
1778                 piAdvance[glyph_index] += round(devX);
1779                 if (advance.y)
1780                     FIXME("Unhandled adjustment to Y advancement\n");
1781             }
1782             break;
1783         }
1784         case 2:
1785         {
1786             POINT advance[2]= {{0,0},{0,0}};
1787             POINT adjust[2]= {{0,0},{0,0}};
1788             double devX, devY;
1789             int index;
1790             int write_dir = (analysis->fRTL && !analysis->fLogicalOrder) ? -1 : 1;
1791             int offset_sign = (analysis->fRTL && analysis->fLogicalOrder) ? -1 : 1;
1792
1793             index = GPOS_apply_PairAdjustment(look, analysis, glyphs, glyph_index, glyph_count, ppem, adjust, advance);
1794             if (adjust[0].x || adjust[0].y)
1795             {
1796                 GPOS_convert_design_units_to_device(lpotm, lplogfont, adjust[0].x, adjust[0].y, &devX, &devY);
1797                 pGoffset[glyph_index].du += round(devX) * offset_sign;
1798                 pGoffset[glyph_index].dv += round(devY);
1799             }
1800             if (advance[0].x || advance[0].y)
1801             {
1802                 GPOS_convert_design_units_to_device(lpotm, lplogfont, advance[0].x, advance[0].y, &devX, &devY);
1803                 piAdvance[glyph_index] += round(devX);
1804             }
1805             if (adjust[1].x || adjust[1].y)
1806             {
1807                 GPOS_convert_design_units_to_device(lpotm, lplogfont, adjust[1].x, adjust[1].y, &devX, &devY);
1808                 pGoffset[glyph_index + write_dir].du += round(devX) * offset_sign;
1809                 pGoffset[glyph_index + write_dir].dv += round(devY);
1810             }
1811             if (advance[1].x || advance[1].y)
1812             {
1813                 GPOS_convert_design_units_to_device(lpotm, lplogfont, advance[1].x, advance[1].y, &devX, &devY);
1814                 piAdvance[glyph_index + write_dir] += round(devX);
1815             }
1816             return index;
1817         }
1818         case 3:
1819         {
1820             POINT desU = {0,0};
1821             double devX, devY;
1822             int write_dir = (analysis->fRTL && !analysis->fLogicalOrder) ? -1 : 1;
1823
1824             GPOS_apply_CursiveAttachment(look, analysis, glyphs, glyph_index, glyph_count, ppem, &desU);
1825             if (desU.x || desU.y)
1826             {
1827                 GPOS_convert_design_units_to_device(lpotm, lplogfont, desU.x, desU.y, &devX, &devY);
1828                 /* Windows does not appear to apply X offsets here */
1829                 pGoffset[glyph_index].dv = round(devY) + pGoffset[glyph_index+write_dir].dv;
1830             }
1831             break;
1832         }
1833         case 4:
1834         {
1835             double devX, devY;
1836             POINT desU = {0,0};
1837             int base_index = GPOS_apply_MarkToBase(psc, look, analysis, glyphs, glyph_index, glyph_count, ppem, &desU);
1838             if (base_index != -1)
1839             {
1840                 GPOS_convert_design_units_to_device(lpotm, lplogfont, desU.x, desU.y, &devX, &devY);
1841                 if (!analysis->fRTL) pGoffset[glyph_index].du = round(devX) - piAdvance[base_index];
1842                 else
1843                 {
1844                     if (analysis->fLogicalOrder) devX *= -1;
1845                     pGoffset[glyph_index].du = round(devX);
1846                 }
1847                 pGoffset[glyph_index].dv = round(devY);
1848             }
1849             break;
1850         }
1851         case 5:
1852         {
1853             double devX, devY;
1854             POINT desU = {0,0};
1855             GPOS_apply_MarkToLigature(look, analysis, glyphs, glyph_index, glyph_count, ppem, &desU);
1856             if (desU.x || desU.y)
1857             {
1858                 GPOS_convert_design_units_to_device(lpotm, lplogfont, desU.x, desU.y, &devX, &devY);
1859                 pGoffset[glyph_index].du = (round(devX) - piAdvance[glyph_index-1]);
1860                 pGoffset[glyph_index].dv = round(devY);
1861             }
1862             break;
1863         }
1864         case 6:
1865         {
1866             double devX, devY;
1867             POINT desU = {0,0};
1868             int write_dir = (analysis->fRTL && !analysis->fLogicalOrder) ? -1 : 1;
1869             if (GPOS_apply_MarkToMark(look, analysis, glyphs, glyph_index, glyph_count, ppem, &desU))
1870             {
1871                 GPOS_convert_design_units_to_device(lpotm, lplogfont, desU.x, desU.y, &devX, &devY);
1872                 if (analysis->fRTL && analysis->fLogicalOrder) devX *= -1;
1873                 pGoffset[glyph_index].du = round(devX) + pGoffset[glyph_index - write_dir].du;
1874                 pGoffset[glyph_index].dv = round(devY) + pGoffset[glyph_index - write_dir].dv;
1875             }
1876             break;
1877         }
1878         case 8:
1879         {
1880             return GPOS_apply_ChainContextPos(psc, lpotm, lplogfont, analysis, piAdvance, lookup, look, glyphs, glyph_index, glyph_count, ppem, pGoffset);
1881         }
1882         default:
1883             FIXME("We do not handle SubType %i\n",type);
1884     }
1885     return glyph_index+1;
1886 }
1887
1888 INT OpenType_apply_GPOS_lookup(ScriptCache *psc, LPOUTLINETEXTMETRICW lpotm, LPLOGFONTW lplogfont, const SCRIPT_ANALYSIS *analysis, INT* piAdvance, INT lookup_index, const WORD *glyphs, INT glyph_index, INT glyph_count, GOFFSET *pGoffset)
1889 {
1890     const GPOS_Header *header = (const GPOS_Header *)psc->GPOS_Table;
1891     const OT_LookupList *lookup = (const OT_LookupList*)((const BYTE*)header + GET_BE_WORD(header->LookupList));
1892
1893     return GPOS_apply_lookup(psc, lpotm, lplogfont, analysis, piAdvance, lookup, lookup_index, glyphs, glyph_index, glyph_count, pGoffset);
1894 }
1895
1896 static void GSUB_initialize_script_cache(ScriptCache *psc)
1897 {
1898     int i;
1899
1900     if (psc->GSUB_Table)
1901     {
1902         const OT_ScriptList *script;
1903         const GSUB_Header* header = (const GSUB_Header*)psc->GSUB_Table;
1904         script = (const OT_ScriptList*)((const BYTE*)header + GET_BE_WORD(header->ScriptList));
1905         psc->script_count = GET_BE_WORD(script->ScriptCount);
1906         TRACE("initializing %i scripts in this font\n",psc->script_count);
1907         if (psc->script_count)
1908         {
1909             psc->scripts = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(LoadedScript) * psc->script_count);
1910             for (i = 0; i < psc->script_count; i++)
1911             {
1912                 int offset = GET_BE_WORD(script->ScriptRecord[i].Script);
1913                 psc->scripts[i].tag = MS_MAKE_TAG(script->ScriptRecord[i].ScriptTag[0], script->ScriptRecord[i].ScriptTag[1], script->ScriptRecord[i].ScriptTag[2], script->ScriptRecord[i].ScriptTag[3]);
1914                 psc->scripts[i].gsub_table = ((const BYTE*)script + offset);
1915             }
1916         }
1917     }
1918 }
1919
1920 static void GPOS_expand_script_cache(ScriptCache *psc)
1921 {
1922     int i, count;
1923     const OT_ScriptList *script;
1924     const GPOS_Header* header = (const GPOS_Header*)psc->GPOS_Table;
1925
1926     if (!header)
1927         return;
1928
1929     script = (const OT_ScriptList*)((const BYTE*)header + GET_BE_WORD(header->ScriptList));
1930     count = GET_BE_WORD(script->ScriptCount);
1931
1932     if (!count)
1933         return;
1934
1935     if (!psc->script_count)
1936     {
1937         psc->script_count = count;
1938         TRACE("initializing %i scripts in this font\n",psc->script_count);
1939         if (psc->script_count)
1940         {
1941             psc->scripts = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(LoadedScript) * psc->script_count);
1942             for (i = 0; i < psc->script_count; i++)
1943             {
1944                 int offset = GET_BE_WORD(script->ScriptRecord[i].Script);
1945                 psc->scripts[i].tag = MS_MAKE_TAG(script->ScriptRecord[i].ScriptTag[0], script->ScriptRecord[i].ScriptTag[1], script->ScriptRecord[i].ScriptTag[2], script->ScriptRecord[i].ScriptTag[3]);
1946                 psc->scripts[i].gpos_table = ((const BYTE*)script + offset);
1947             }
1948         }
1949     }
1950     else
1951     {
1952         for (i = 0; i < count; i++)
1953         {
1954             int j;
1955             int offset = GET_BE_WORD(script->ScriptRecord[i].Script);
1956             OPENTYPE_TAG tag = MS_MAKE_TAG(script->ScriptRecord[i].ScriptTag[0], script->ScriptRecord[i].ScriptTag[1], script->ScriptRecord[i].ScriptTag[2], script->ScriptRecord[i].ScriptTag[3]);
1957             for (j = 0; j < psc->script_count; j++)
1958             {
1959                 if (psc->scripts[j].tag == tag)
1960                 {
1961                     psc->scripts[j].gpos_table = ((const BYTE*)script + offset);
1962                     break;
1963                 }
1964             }
1965             if (j == psc->script_count)
1966             {
1967                 psc->script_count++;
1968                 psc->scripts = HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,psc->scripts, sizeof(LoadedScript) * psc->script_count);
1969                 psc->scripts[j].tag = tag;
1970                 psc->scripts[j].gpos_table = ((const BYTE*)script + offset);
1971             }
1972         }
1973     }
1974 }
1975
1976 static void _initialize_script_cache(ScriptCache *psc)
1977 {
1978     if (!psc->scripts_initialized)
1979     {
1980         GSUB_initialize_script_cache(psc);
1981         GPOS_expand_script_cache(psc);
1982         psc->scripts_initialized = TRUE;
1983     }
1984 }
1985
1986 HRESULT OpenType_GetFontScriptTags(ScriptCache *psc, OPENTYPE_TAG searchingFor, int cMaxTags, OPENTYPE_TAG *pScriptTags, int *pcTags)
1987 {
1988     int i;
1989     HRESULT rc = S_OK;
1990
1991     _initialize_script_cache(psc);
1992
1993     *pcTags = psc->script_count;
1994
1995     if (!searchingFor && cMaxTags < *pcTags)
1996         rc = E_OUTOFMEMORY;
1997     else if (searchingFor)
1998         rc = USP_E_SCRIPT_NOT_IN_FONT;
1999
2000     for (i = 0; i < psc->script_count; i++)
2001     {
2002         if (i < cMaxTags)
2003             pScriptTags[i] = psc->scripts[i].tag;
2004
2005         if (searchingFor)
2006         {
2007             if (searchingFor == psc->scripts[i].tag)
2008             {
2009                 pScriptTags[0] = psc->scripts[i].tag;
2010                 *pcTags = 1;
2011                 rc = S_OK;
2012                 break;
2013             }
2014         }
2015     }
2016     return rc;
2017 }
2018
2019 static void GSUB_initialize_language_cache(LoadedScript *script)
2020 {
2021     int i;
2022
2023     if (script->gsub_table)
2024     {
2025         DWORD offset;
2026         const OT_Script* table = script->gsub_table;
2027         script->language_count = GET_BE_WORD(table->LangSysCount);
2028         offset = GET_BE_WORD(table->DefaultLangSys);
2029         if (offset)
2030         {
2031             script->default_language.tag = MS_MAKE_TAG('d','f','l','t');
2032             script->default_language.gsub_table = (const BYTE*)table + offset;
2033         }
2034
2035         if (script->language_count)
2036         {
2037             TRACE("Deflang %p, LangCount %i\n",script->default_language.gsub_table, script->language_count);
2038
2039             script->languages = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(LoadedLanguage) * script->language_count);
2040
2041             for (i = 0; i < script->language_count; i++)
2042             {
2043                 int offset = GET_BE_WORD(table->LangSysRecord[i].LangSys);
2044                 script->languages[i].tag = MS_MAKE_TAG(table->LangSysRecord[i].LangSysTag[0], table->LangSysRecord[i].LangSysTag[1], table->LangSysRecord[i].LangSysTag[2], table->LangSysRecord[i].LangSysTag[3]);
2045                 script->languages[i].gsub_table = ((const BYTE*)table + offset);
2046             }
2047         }
2048     }
2049 }
2050
2051 static void GPOS_expand_language_cache(LoadedScript *script)
2052 {
2053     int count;
2054     const OT_Script* table = script->gpos_table;
2055     DWORD offset;
2056
2057     if (!table)
2058         return;
2059
2060     offset = GET_BE_WORD(table->DefaultLangSys);
2061     if (offset)
2062         script->default_language.gpos_table = (const BYTE*)table + offset;
2063
2064     count = GET_BE_WORD(table->LangSysCount);
2065
2066     TRACE("Deflang %p, LangCount %i\n",script->default_language.gpos_table, count);
2067
2068     if (!count)
2069         return;
2070
2071     if (!script->language_count)
2072     {
2073         int i;
2074         script->language_count = count;
2075
2076         script->languages = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(LoadedLanguage) * script->language_count);
2077
2078         for (i = 0; i < script->language_count; i++)
2079         {
2080             int offset = GET_BE_WORD(table->LangSysRecord[i].LangSys);
2081             script->languages[i].tag = MS_MAKE_TAG(table->LangSysRecord[i].LangSysTag[0], table->LangSysRecord[i].LangSysTag[1], table->LangSysRecord[i].LangSysTag[2], table->LangSysRecord[i].LangSysTag[3]);
2082             script->languages[i].gpos_table = ((const BYTE*)table + offset);
2083         }
2084     }
2085     else if (count)
2086     {
2087         int i,j;
2088         for (i = 0; i < count; i++)
2089         {
2090             int offset = GET_BE_WORD(table->LangSysRecord[i].LangSys);
2091             OPENTYPE_TAG tag = MS_MAKE_TAG(table->LangSysRecord[i].LangSysTag[0], table->LangSysRecord[i].LangSysTag[1], table->LangSysRecord[i].LangSysTag[2], table->LangSysRecord[i].LangSysTag[3]);
2092
2093             for (j = 0; j < script->language_count; j++)
2094             {
2095                 if (script->languages[j].tag == tag)
2096                 {
2097                     script->languages[j].gpos_table = ((const BYTE*)table + offset);
2098                     break;
2099                 }
2100             }
2101             if (j == script->language_count)
2102             {
2103                 script->language_count++;
2104                 script->languages = HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,script->languages, sizeof(LoadedLanguage) * script->language_count);
2105                 script->languages[j].tag = tag;
2106                 script->languages[j].gpos_table = ((const BYTE*)table + offset);
2107             }
2108         }
2109     }
2110 }
2111
2112 static void _initialize_language_cache(LoadedScript *script)
2113 {
2114     if (!script->languages_initialized)
2115     {
2116         GSUB_initialize_language_cache(script);
2117         GPOS_expand_language_cache(script);
2118         script->languages_initialized = TRUE;
2119     }
2120 }
2121
2122 HRESULT OpenType_GetFontLanguageTags(ScriptCache *psc, OPENTYPE_TAG script_tag, OPENTYPE_TAG searchingFor, int cMaxTags, OPENTYPE_TAG *pLanguageTags, int *pcTags)
2123 {
2124     int i;
2125     HRESULT rc = S_OK;
2126     LoadedScript *script = NULL;
2127
2128     _initialize_script_cache(psc);
2129
2130     for (i = 0; i < psc->script_count; i++)
2131     {
2132          if (psc->scripts[i].tag == script_tag)
2133          {
2134             script = &psc->scripts[i];
2135             break;
2136          }
2137     }
2138
2139     if (!script)
2140         return E_INVALIDARG;
2141
2142     _initialize_language_cache(script);
2143
2144     if (!searchingFor && cMaxTags < script->language_count)
2145         rc = E_OUTOFMEMORY;
2146     else if (searchingFor)
2147         rc = E_INVALIDARG;
2148
2149     *pcTags = script->language_count;
2150
2151     for (i = 0; i < script->language_count; i++)
2152     {
2153         if (i < cMaxTags)
2154             pLanguageTags[i] = script->languages[i].tag;
2155
2156         if (searchingFor)
2157         {
2158             if (searchingFor == script->languages[i].tag)
2159             {
2160                 pLanguageTags[0] = script->languages[i].tag;
2161                 *pcTags = 1;
2162                 rc = S_OK;
2163                 break;
2164             }
2165         }
2166     }
2167
2168     if (script->default_language.gsub_table)
2169     {
2170         if (i < cMaxTags)
2171             pLanguageTags[i] = script->default_language.tag;
2172
2173         if (searchingFor  && FAILED(rc))
2174         {
2175             pLanguageTags[0] = script->default_language.tag;
2176         }
2177         i++;
2178         *pcTags = (*pcTags) + 1;
2179     }
2180
2181     return rc;
2182 }
2183
2184
2185 static void GSUB_initialize_feature_cache(LPCVOID table, LoadedLanguage *language)
2186 {
2187     int i;
2188
2189     if (language->gsub_table)
2190     {
2191         const OT_LangSys *lang = language->gsub_table;
2192         const GSUB_Header *header = (const GSUB_Header *)table;
2193         const OT_FeatureList *feature_list;
2194
2195         language->feature_count = GET_BE_WORD(lang->FeatureCount);
2196         TRACE("%i features\n",language->feature_count);
2197
2198         if (language->feature_count)
2199         {
2200             language->features = HeapAlloc(GetProcessHeap(),0,sizeof(LoadedFeature)*language->feature_count);
2201
2202             feature_list = (const OT_FeatureList*)((const BYTE*)header + GET_BE_WORD(header->FeatureList));
2203
2204             for (i = 0; i < language->feature_count; i++)
2205             {
2206                 const OT_Feature *feature;
2207                 int j;
2208                 int index = GET_BE_WORD(lang->FeatureIndex[i]);
2209
2210                 language->features[i].tag = MS_MAKE_TAG(feature_list->FeatureRecord[index].FeatureTag[0], feature_list->FeatureRecord[index].FeatureTag[1], feature_list->FeatureRecord[index].FeatureTag[2], feature_list->FeatureRecord[index].FeatureTag[3]);
2211                 language->features[i].feature = ((const BYTE*)feature_list + GET_BE_WORD(feature_list->FeatureRecord[index].Feature));
2212                 feature = (const OT_Feature*)language->features[i].feature;
2213                 language->features[i].lookup_count = GET_BE_WORD(feature->LookupCount);
2214                 language->features[i].lookups = HeapAlloc(GetProcessHeap(),0,sizeof(WORD) * language->features[i].lookup_count);
2215                 for (j = 0; j < language->features[i].lookup_count; j++)
2216                     language->features[i].lookups[j] = GET_BE_WORD(feature->LookupListIndex[j]);
2217                 language->features[i].tableType = FEATURE_GSUB_TABLE;
2218             }
2219         }
2220     }
2221 }
2222
2223 static void GPOS_expand_feature_cache(LPCVOID table, LoadedLanguage *language)
2224 {
2225     int i, count;
2226     const OT_LangSys *lang = language->gpos_table;
2227     const GPOS_Header *header = (const GPOS_Header *)table;
2228     const OT_FeatureList *feature_list;
2229
2230     if (!lang)
2231         return;
2232
2233     count = GET_BE_WORD(lang->FeatureCount);
2234     feature_list = (const OT_FeatureList*)((const BYTE*)header + GET_BE_WORD(header->FeatureList));
2235
2236     TRACE("%i features\n",count);
2237
2238     if (!count)
2239         return;
2240
2241     if (!language->feature_count)
2242     {
2243         language->feature_count = count;
2244
2245         if (language->feature_count)
2246         {
2247             language->features = HeapAlloc(GetProcessHeap(),0,sizeof(LoadedFeature)*language->feature_count);
2248
2249             for (i = 0; i < language->feature_count; i++)
2250             {
2251                 const OT_Feature *feature;
2252                 int j;
2253                 int index = GET_BE_WORD(lang->FeatureIndex[i]);
2254
2255                 language->features[i].tag = MS_MAKE_TAG(feature_list->FeatureRecord[index].FeatureTag[0], feature_list->FeatureRecord[index].FeatureTag[1], feature_list->FeatureRecord[index].FeatureTag[2], feature_list->FeatureRecord[index].FeatureTag[3]);
2256                 language->features[i].feature = ((const BYTE*)feature_list + GET_BE_WORD(feature_list->FeatureRecord[index].Feature));
2257                 feature = (const OT_Feature*)language->features[i].feature;
2258                 language->features[i].lookup_count = GET_BE_WORD(feature->LookupCount);
2259                 language->features[i].lookups = HeapAlloc(GetProcessHeap(),0,sizeof(WORD) * language->features[i].lookup_count);
2260                 for (j = 0; j < language->features[i].lookup_count; j++)
2261                     language->features[i].lookups[j] = GET_BE_WORD(feature->LookupListIndex[j]);
2262                 language->features[i].tableType = FEATURE_GPOS_TABLE;
2263             }
2264         }
2265     }
2266     else
2267     {
2268         language->features = HeapReAlloc(GetProcessHeap(),0,language->features, sizeof(LoadedFeature)*(language->feature_count + count));
2269
2270         for (i = 0; i < count; i++)
2271         {
2272             const OT_Feature *feature;
2273             int j;
2274             int index = GET_BE_WORD(lang->FeatureIndex[i]);
2275             int idx = language->feature_count + i;
2276
2277             language->features[idx].tag = MS_MAKE_TAG(feature_list->FeatureRecord[index].FeatureTag[0], feature_list->FeatureRecord[index].FeatureTag[1], feature_list->FeatureRecord[index].FeatureTag[2], feature_list->FeatureRecord[index].FeatureTag[3]);
2278             language->features[idx].feature = ((const BYTE*)feature_list + GET_BE_WORD(feature_list->FeatureRecord[index].Feature));
2279             feature = (const OT_Feature*)language->features[idx].feature;
2280             language->features[idx].lookup_count = GET_BE_WORD(feature->LookupCount);
2281             language->features[idx].lookups = HeapAlloc(GetProcessHeap(),0,sizeof(WORD) * language->features[idx].lookup_count);
2282             for (j = 0; j < language->features[idx].lookup_count; j++)
2283                 language->features[idx].lookups[j] = GET_BE_WORD(feature->LookupListIndex[j]);
2284             language->features[idx].tableType = FEATURE_GPOS_TABLE;
2285         }
2286         language->feature_count += count;
2287     }
2288 }
2289
2290 static void _initialize_feature_cache(ScriptCache *psc, LoadedLanguage *language)
2291 {
2292     if (!language->features_initialized)
2293     {
2294         GSUB_initialize_feature_cache(psc->GSUB_Table, language);
2295         GPOS_expand_feature_cache(psc->GPOS_Table, language);
2296         language->features_initialized = TRUE;
2297     }
2298 }
2299
2300 HRESULT OpenType_GetFontFeatureTags(ScriptCache *psc, OPENTYPE_TAG script_tag, OPENTYPE_TAG language_tag, BOOL filtered, OPENTYPE_TAG searchingFor, char tableType, int cMaxTags, OPENTYPE_TAG *pFeatureTags, int *pcTags, LoadedFeature** feature)
2301 {
2302     int i;
2303     HRESULT rc = S_OK;
2304     LoadedScript *script = NULL;
2305     LoadedLanguage *language = NULL;
2306
2307     _initialize_script_cache(psc);
2308
2309     for (i = 0; i < psc->script_count; i++)
2310     {
2311         if (psc->scripts[i].tag == script_tag)
2312         {
2313             script = &psc->scripts[i];
2314             break;
2315         }
2316     }
2317
2318     if (!script)
2319     {
2320         *pcTags = 0;
2321         if (!filtered)
2322             return S_OK;
2323         else
2324             return E_INVALIDARG;
2325     }
2326
2327     _initialize_language_cache(script);
2328
2329     if ((script->default_language.gsub_table || script->default_language.gpos_table) && script->default_language.tag == language_tag)
2330         language = &script->default_language;
2331     else
2332     {
2333         for (i = 0; i < script->language_count; i++)
2334         {
2335             if (script->languages[i].tag == language_tag)
2336             {
2337                 language = &script->languages[i];
2338                 break;
2339             }
2340         }
2341     }
2342
2343     if (!language)
2344     {
2345         *pcTags = 0;
2346         return S_OK;
2347     }
2348
2349     _initialize_feature_cache(psc, language);
2350
2351     if (tableType)
2352     {
2353         *pcTags = 0;
2354         for (i = 0; i < language->feature_count; i++)
2355             if (language->features[i].tableType == tableType)
2356                 *pcTags = (*pcTags)+1;
2357     }
2358     else
2359         *pcTags = language->feature_count;
2360
2361     if (!searchingFor && cMaxTags < *pcTags)
2362         rc = E_OUTOFMEMORY;
2363     else if (searchingFor)
2364         rc = E_INVALIDARG;
2365
2366     for (i = 0; i < language->feature_count; i++)
2367     {
2368         if (i < cMaxTags)
2369         {
2370             if (!tableType || language->features[i].tableType == tableType)
2371                 pFeatureTags[i] = language->features[i].tag;
2372         }
2373
2374         if (searchingFor)
2375         {
2376             if ((searchingFor == language->features[i].tag) &&
2377                 (!tableType || language->features[i].tableType == tableType))
2378             {
2379                 pFeatureTags[0] = language->features[i].tag;
2380                 *pcTags = 1;
2381                 if (feature)
2382                     *feature = &language->features[i];
2383                 rc = S_OK;
2384                 break;
2385             }
2386         }
2387     }
2388     return rc;
2389 }