core/src/fxge/fx_freetype/fxft2.5.01/src/cff/cffobjs.c - Issue 815103002: Update freetype to 2.5.4.

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Issue 815103002: Update freetype to 2.5.4. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master

Patch Set: Adjust GYP and GN Created 6 years ago

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1 /***************************************************************************/

2 /* */

3 /* cffobjs.c */

4 /* */

5 /* OpenType objects manager (body). */

6 /* */

7 /* Copyright 1996-2013 by */

8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */

9 /* */

10 /* This file is part of the FreeType project, and may only be used, */

11 /* modified, and distributed under the terms of the FreeType project */

12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */

13 /* this file you indicate that you have read the license and */

14 /* understand and accept it fully. */

15 /* */

16 /***************************************************************************/

17

18

19 #include "../../include/ft2build.h"

20

21 #include "../../include/freetype/internal/ftdebug.h"

22 #include "../../include/freetype/internal/ftcalc.h"

23 #include "../../include/freetype/internal/ftstream.h"

24 #include "../../include/freetype/fterrors.h"

25 #include "../../include/freetype/ttnameid.h"

26 #include "../../include/freetype/tttags.h"

27 #include "../../include/freetype/internal/sfnt.h"

28 #include "../../include/freetype/ftcffdrv.h"

29

30 #include "cffobjs.h"

31 #include "cffload.h"

32 #include "cffcmap.h"

33 #include "cffpic.h"

34

35 #include "cfferrs.h"

36

37

38 /*************************************************************************/

39 /* */

40 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */

41 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */

42 /* messages during execution. */

43 /* */

44 #undef FT_COMPONENT

45 #define FT_COMPONENT trace_cffobjs

46

47

48 /*************************************************************************/

49 /* */

50 /* SIZE FUNCTIONS */

51 /* */

52 /* Note that we store the global hints in the size's `internal' root */

53 /* field. */

54 /* */

55 /*************************************************************************/

56

57

58 static PSH_Globals_Funcs

59 cff_size_get_globals_funcs( CFF_Size size )

60 {

61 CFF_Face face = (CFF_Face)size->root.face;

62 CFF_Font font = (CFF_Font)face->extra.data;

63 PSHinter_Service pshinter = font->pshinter;

64 FT_Module module;

65

66

67 module = FT_Get_Module( size->root.face->driver->root.library,

68 "pshinter" );

69 return ( module && pshinter && pshinter->get_globals_funcs )

70 ? pshinter->get_globals_funcs( module )

71 : 0;

72 }

73

74

75 FT_LOCAL_DEF( void )

76 cff_size_done( FT_Size cffsize ) /* CFF_Size */

77 {

78 CFF_Size size = (CFF_Size)cffsize;

79 CFF_Face face = (CFF_Face)size->root.face;

80 CFF_Font font = (CFF_Font)face->extra.data;

81 CFF_Internal internal = (CFF_Internal)cffsize->internal;

82

83

84 if ( internal )

85 {

86 PSH_Globals_Funcs funcs;

87

88

89 funcs = cff_size_get_globals_funcs( size );

90 if ( funcs )

91 {

92 FT_UInt i;

93

94

95 funcs->destroy( internal->topfont );

96

97 for ( i = font->num_subfonts; i > 0; i-- )

98 funcs->destroy( internal->subfonts[i - 1] );

99 }

100

101 /* `internal' is freed by destroy_size (in ftobjs.c) */

102 }

103 }

104

105

106 /* CFF and Type 1 private dictionaries have slightly different */

107 /* structures; we need to synthesize a Type 1 dictionary on the fly */

108

109 static void

110 cff_make_private_dict( CFF_SubFont subfont,

111 PS_Private priv )

112 {

113 CFF_Private cpriv = &subfont->private_dict;

114 FT_UInt n, count;

115

116

117 FT_MEM_ZERO( priv, sizeof ( *priv ) );

118

119 count = priv->num_blue_values = cpriv->num_blue_values;

120 for ( n = 0; n < count; n++ )

121 priv->blue_values[n] = (FT_Short)cpriv->blue_values[n];

122

123 count = priv->num_other_blues = cpriv->num_other_blues;

124 for ( n = 0; n < count; n++ )

125 priv->other_blues[n] = (FT_Short)cpriv->other_blues[n];

126

127 count = priv->num_family_blues = cpriv->num_family_blues;

128 for ( n = 0; n < count; n++ )

129 priv->family_blues[n] = (FT_Short)cpriv->family_blues[n];

130

131 count = priv->num_family_other_blues = cpriv->num_family_other_blues;

132 for ( n = 0; n < count; n++ )

133 priv->family_other_blues[n] = (FT_Short)cpriv->family_other_blues[n];

134

135 priv->blue_scale = cpriv->blue_scale;

136 priv->blue_shift = (FT_Int)cpriv->blue_shift;

137 priv->blue_fuzz = (FT_Int)cpriv->blue_fuzz;

138

139 priv->standard_width[0] = (FT_UShort)cpriv->standard_width;

140 priv->standard_height[0] = (FT_UShort)cpriv->standard_height;

141

142 count = priv->num_snap_widths = cpriv->num_snap_widths;

143 for ( n = 0; n < count; n++ )

144 priv->snap_widths[n] = (FT_Short)cpriv->snap_widths[n];

145

146 count = priv->num_snap_heights = cpriv->num_snap_heights;

147 for ( n = 0; n < count; n++ )

148 priv->snap_heights[n] = (FT_Short)cpriv->snap_heights[n];

149

150 priv->force_bold = cpriv->force_bold;

151 priv->language_group = cpriv->language_group;

152 priv->lenIV = cpriv->lenIV;

153 }

154

155

156 FT_LOCAL_DEF( FT_Error )

157 cff_size_init( FT_Size cffsize ) /* CFF_Size */

158 {

159 CFF_Size size = (CFF_Size)cffsize;

160 FT_Error error = FT_Err_Ok;

161 PSH_Globals_Funcs funcs = cff_size_get_globals_funcs( size );

162

163

164 if ( funcs )

165 {

166 CFF_Face face = (CFF_Face)cffsize->face;

167 CFF_Font font = (CFF_Font)face->extra.data;

168 CFF_Internal internal = NULL;

169

170 PS_PrivateRec priv;

171 FT_Memory memory = cffsize->face->memory;

172

173 FT_UInt i;

174

175

176 if ( FT_NEW( internal ) )

177 goto Exit;

178

179 cff_make_private_dict( &font->top_font, &priv );

180 error = funcs->create( cffsize->face->memory, &priv,

181 &internal->topfont );

182 if ( error )

183 goto Exit;

184

185 for ( i = font->num_subfonts; i > 0; i-- )

186 {

187 CFF_SubFont sub = font->subfonts[i - 1];

188

189

190 cff_make_private_dict( sub, &priv );

191 error = funcs->create( cffsize->face->memory, &priv,

192 &internal->subfonts[i - 1] );

193 if ( error )

194 goto Exit;

195 }

196

197 cffsize->internal = (FT_Size_Internal)(void*)internal;

198 }

199

200 size->strike_index = 0xFFFFFFFFUL;

201

202 Exit:

203 return error;

204 }

205

206

207 #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS

208

209 FT_LOCAL_DEF( FT_Error )

210 cff_size_select( FT_Size size,

211 FT_ULong strike_index )

212 {

213 CFF_Size cffsize = (CFF_Size)size;

214 PSH_Globals_Funcs funcs;

215

216

217 cffsize->strike_index = strike_index;

218

219 FT_Select_Metrics( size->face, strike_index );

220

221 funcs = cff_size_get_globals_funcs( cffsize );

222

223 if ( funcs )

224 {

225 CFF_Face face = (CFF_Face)size->face;

226 CFF_Font font = (CFF_Font)face->extra.data;

227 CFF_Internal internal = (CFF_Internal)size->internal;

228

229 FT_ULong top_upm = font->top_font.font_dict.units_per_em;

230 FT_UInt i;

231

232

233 funcs->set_scale( internal->topfont,

234 size->metrics.x_scale, size->metrics.y_scale,

235 0, 0 );

236

237 for ( i = font->num_subfonts; i > 0; i-- )

238 {

239 CFF_SubFont sub = font->subfonts[i - 1];

240 FT_ULong sub_upm = sub->font_dict.units_per_em;

241 FT_Pos x_scale, y_scale;

242

243

244 if ( top_upm != sub_upm )

245 {

246 x_scale = FT_MulDiv( size->metrics.x_scale, top_upm, sub_upm );

247 y_scale = FT_MulDiv( size->metrics.y_scale, top_upm, sub_upm );

248 }

249 else

250 {

251 x_scale = size->metrics.x_scale;

252 y_scale = size->metrics.y_scale;

253 }

254

255 funcs->set_scale( internal->subfonts[i - 1],

256 x_scale, y_scale, 0, 0 );

257 }

258 }

259

260 return FT_Err_Ok;

261 }

262

263 #endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */

264

265

266 FT_LOCAL_DEF( FT_Error )

267 cff_size_request( FT_Size size,

268 FT_Size_Request req )

269 {

270 CFF_Size cffsize = (CFF_Size)size;

271 PSH_Globals_Funcs funcs;

272

273

274 #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS

275

276 if ( FT_HAS_FIXED_SIZES( size->face ) )

277 {

278 CFF_Face cffface = (CFF_Face)size->face;

279 SFNT_Service sfnt = (SFNT_Service)cffface->sfnt;

280 FT_ULong strike_index;

281

282

283 if ( sfnt->set_sbit_strike( cffface, req, &strike_index ) )

284 cffsize->strike_index = 0xFFFFFFFFUL;

285 else

286 return cff_size_select( size, strike_index );

287 }

288

289 #endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */

290

291 FT_Request_Metrics( size->face, req );

292

293 funcs = cff_size_get_globals_funcs( cffsize );

294

295 if ( funcs )

296 {

297 CFF_Face cffface = (CFF_Face)size->face;

298 CFF_Font font = (CFF_Font)cffface->extra.data;

299 CFF_Internal internal = (CFF_Internal)size->internal;

300

301 FT_ULong top_upm = font->top_font.font_dict.units_per_em;

302 FT_UInt i;

303

304

305 funcs->set_scale( internal->topfont,

306 size->metrics.x_scale, size->metrics.y_scale,

307 0, 0 );

308

309 for ( i = font->num_subfonts; i > 0; i-- )

310 {

311 CFF_SubFont sub = font->subfonts[i - 1];

312 FT_ULong sub_upm = sub->font_dict.units_per_em;

313 FT_Pos x_scale, y_scale;

314

315

316 if ( top_upm != sub_upm )

317 {

318 x_scale = FT_MulDiv( size->metrics.x_scale, top_upm, sub_upm );

319 y_scale = FT_MulDiv( size->metrics.y_scale, top_upm, sub_upm );

320 }

321 else

322 {

323 x_scale = size->metrics.x_scale;

324 y_scale = size->metrics.y_scale;

325 }

326

327 funcs->set_scale( internal->subfonts[i - 1],

328 x_scale, y_scale, 0, 0 );

329 }

330 }

331

332 return FT_Err_Ok;

333 }

334

335

336 /*************************************************************************/

337 /* */

338 /* SLOT FUNCTIONS */

339 /* */

340 /*************************************************************************/

341

342 FT_LOCAL_DEF( void )

343 cff_slot_done( FT_GlyphSlot slot )

344 {

345 slot->internal->glyph_hints = 0;

346 }

347

348

349 FT_LOCAL_DEF( FT_Error )

350 cff_slot_init( FT_GlyphSlot slot )

351 {

352 CFF_Face face = (CFF_Face)slot->face;

353 CFF_Font font = (CFF_Font)face->extra.data;

354 PSHinter_Service pshinter = font->pshinter;

355

356

357 if ( pshinter )

358 {

359 FT_Module module;

360

361

362 module = FT_Get_Module( slot->face->driver->root.library,

363 "pshinter" );

364 if ( module )

365 {

366 T2_Hints_Funcs funcs;

367

368

369 funcs = pshinter->get_t2_funcs( module );

370 slot->internal->glyph_hints = (void*)funcs;

371 }

372 }

373

374 return FT_Err_Ok;

375 }

376

377

378 /*************************************************************************/

379 /* */

380 /* FACE FUNCTIONS */

381 /* */

382 /*************************************************************************/

383

384 static FT_String*

385 cff_strcpy( FT_Memory memory,

386 const FT_String* source )

387 {

388 FT_Error error;

389 FT_String* result;

390

391

392 (void)FT_STRDUP( result, source );

393

394 FT_UNUSED( error );

395

396 return result;

397 }

398

399

400 /* Strip all subset prefixes of the form `ABCDEF+'. Usually, there */

401 /* is only one, but font names like `APCOOG+JFABTD+FuturaBQ-Bold' */

402 /* have been seen in the wild. */

403

404 static void

405 remove_subset_prefix( FT_String* name )

406 {

407 FT_Int32 idx = 0;

408 FT_Int32 length = (FT_Int32)strlen( name ) + 1;

409 FT_Bool continue_search = 1;

410

411

412 while ( continue_search )

413 {

414 if ( length >= 7 && name[6] == '+' )

415 {

416 for ( idx = 0; idx < 6; idx++ )

417 {

418 /* ASCII uppercase letters */

419 if ( !( 'A' <= name[idx] && name[idx] <= 'Z' ) )

420 continue_search = 0;

421 }

422

423 if ( continue_search )

424 {

425 for ( idx = 7; idx < length; idx++ )

426 name[idx - 7] = name[idx];

427 length -= 7;

428 }

429 }

430 else

431 continue_search = 0;

432 }

433 }

434

435

436 /* Remove the style part from the family name (if present). */

437

438 static void

439 remove_style( FT_String* family_name,

440 const FT_String* style_name )

441 {

442 FT_Int32 family_name_length, style_name_length;

443

444

445 family_name_length = (FT_Int32)strlen( family_name );

446 style_name_length = (FT_Int32)strlen( style_name );

447

448 if ( family_name_length > style_name_length )

449 {

450 FT_Int idx;

451

452

453 for ( idx = 1; idx <= style_name_length; ++idx )

454 {

455 if ( family_name[family_name_length - idx] !=

456 style_name[style_name_length - idx] )

457 break;

458 }

459

460 if ( idx > style_name_length )

461 {

462 /* family_name ends with style_name; remove it */

463 idx = family_name_length - style_name_length - 1;

464

465 /* also remove special characters */

466 /* between real family name and style */

467 while ( idx > 0 &&

468 ( family_name[idx] == '-' \|\|

469 family_name[idx] == ' ' \|\|

470 family_name[idx] == '_' \|\|

471 family_name[idx] == '+' ) )

472 --idx;

473

474 if ( idx > 0 )

475 family_name[idx + 1] = '\0';

476 }

477 }

478 }

479

480

481 FT_LOCAL_DEF( FT_Error )

482 cff_face_init( FT_Stream stream,

483 FT_Face cffface, /* CFF_Face */

484 FT_Int face_index,

485 FT_Int num_params,

486 FT_Parameter* params )

487 {

488 CFF_Face face = (CFF_Face)cffface;

489 FT_Error error;

490 SFNT_Service sfnt;

491 FT_Service_PsCMaps psnames;

492 PSHinter_Service pshinter;

493 FT_Bool pure_cff = 1;

494 FT_Bool sfnt_format = 0;

495 FT_Library library = cffface->driver->root.library;

496

497

498 sfnt = (SFNT_Service)FT_Get_Module_Interface(

499 library, "sfnt" );

500 if ( !sfnt )

501 {

502 FT_ERROR(( "cff_face_init: cannot access `sfnt' module\n" ));

503 error = FT_THROW( Missing_Module );

504 goto Exit;

505 }

506

507 FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS );

508

509 pshinter = (PSHinter_Service)FT_Get_Module_Interface(

510 library, "pshinter" );

511

512 FT_TRACE2(( "CFF driver\n" ));

513

514 /* create input stream from resource */

515 if ( FT_STREAM_SEEK( 0 ) )

516 goto Exit;

517

518 /* check whether we have a valid OpenType file */

519 error = sfnt->init_face( stream, face, face_index, num_params, params );

520 if ( !error )

521 {

522 if ( face->format_tag != TTAG_OTTO &&

523 face->format_tag != 0x00010000UL ) /* `OTTO'; OpenType/CFF f ont */

524 {

525 FT_TRACE2(( " not an OpenType/CFF font\n" ));

526 error = FT_THROW( Unknown_File_Format );

527 goto Exit;

528 }

529

530 /* if we are performing a simple font format check, exit immediately */

531 if ( face_index < 0 )

532 return FT_Err_Ok;

533

534 sfnt_format = 1;

535

536 /* now, the font can be either an OpenType/CFF font, or an SVG CEF */

537 /* font; in the latter case it doesn't have a `head' table */

538 error = face->goto_table( face, TTAG_head, stream, 0 );

539 if ( !error )

540 {

541 pure_cff = 0;

542

543 /* load font directory */

544 error = sfnt->load_face( stream, face, face_index,

545 num_params, params );

546 if ( error )

547 goto Exit;

548 }

549 else

550 {

551 /* load the `cmap' table explicitly */

552 error = sfnt->load_cmap( face, stream );

553 if ( error )

554 goto Exit;

555 }

556

557 /* now load the CFF part of the file */

558 error = face->goto_table( face, TTAG_CFF, stream, 0 );

559 if ( error )

560 goto Exit;

561 }

562 else

563 {

564 /* rewind to start of file; we are going to load a pure-CFF font */

565 if ( FT_STREAM_SEEK( 0 ) )

566 goto Exit;

567 error = FT_Err_Ok;

568 }

569

570 /* now load and parse the CFF table in the file */

571 {

572 CFF_Font cff = NULL;

573 CFF_FontRecDict dict;

574 FT_Memory memory = cffface->memory;

575 FT_Int32 flags;

576 FT_UInt i;

577

578

579 if ( FT_NEW( cff ) )

580 goto Exit;

581

582 face->extra.data = cff;

583 error = cff_font_load( library, stream, face_index, cff, pure_cff );

584 if ( error )

585 goto Exit;

586

587 cff->pshinter = pshinter;

588 cff->psnames = psnames;

589

590 cffface->face_index = face_index;

591

592 /* Complement the root flags with some interesting information. */

593 /* Note that this is only necessary for pure CFF and CEF fonts; */

594 /* SFNT based fonts use the `name' table instead. */

595

596 cffface->num_glyphs = cff->num_glyphs;

597

598 dict = &cff->top_font.font_dict;

599

600 /* we need the `PSNames' module for CFF and CEF formats */

601 /* which aren't CID-keyed */

602 if ( dict->cid_registry == 0xFFFFU && !psnames )

603 {

604 FT_ERROR(( "cff_face_init:"

605 " cannot open CFF & CEF fonts\n"

606 " "

607 " without the `PSNames' module\n" ));

608 error = FT_THROW( Missing_Module );

609 goto Exit;

610 }

611

612 #ifdef FT_DEBUG_LEVEL_TRACE

613 {

614 FT_UInt idx;

615 FT_String* s;

616

617

618 FT_TRACE4(( "SIDs\n" ));

619

620 /* dump string index, including default strings for convenience */

621 for ( idx = 0; idx < cff->num_strings + 390; idx++ )

622 {

623 s = cff_index_get_sid_string( cff, idx );

624 if ( s )

625 FT_TRACE4((" %5d %s\n", idx, s ));

626 }

627 }

628 #endif /* FT_DEBUG_LEVEL_TRACE */

629

630 if ( !dict->has_font_matrix )

631 dict->units_per_em = pure_cff ? 1000 : face->root.units_per_EM;

632

633 /* Normalize the font matrix so that `matrix->xx' is 1; the */

634 /* scaling is done with `units_per_em' then (at this point, */

635 /* it already contains the scaling factor, but without */

636 /* normalization of the matrix). */

637 /* */

638 /* Note that the offsets must be expressed in integer font */

639 /* units. */

640

641 {

642 FT_Matrix* matrix = &dict->font_matrix;

643 FT_Vector* offset = &dict->font_offset;

644 FT_ULong* upm = &dict->units_per_em;

645 FT_Fixed temp = FT_ABS( matrix->yy );

646

647

648 if ( temp != 0x10000L )

649 {

650 upm = FT_DivFix( upm, temp );

651

652 matrix->xx = FT_DivFix( matrix->xx, temp );

653 matrix->yx = FT_DivFix( matrix->yx, temp );

654 matrix->xy = FT_DivFix( matrix->xy, temp );

655 matrix->yy = FT_DivFix( matrix->yy, temp );

656 offset->x = FT_DivFix( offset->x, temp );

657 offset->y = FT_DivFix( offset->y, temp );

658 }

659

660 offset->x >>= 16;

661 offset->y >>= 16;

662 }

663

664 for ( i = cff->num_subfonts; i > 0; i-- )

665 {

666 CFF_FontRecDict sub = &cff->subfonts[i - 1]->font_dict;

667 CFF_FontRecDict top = &cff->top_font.font_dict;

668

669 FT_Matrix* matrix;

670 FT_Vector* offset;

671 FT_ULong* upm;

672 FT_Fixed temp;

673

674

675 if ( sub->has_font_matrix )

676 {

677 FT_Long scaling;

678

679

680 /* if we have a top-level matrix, */

681 /* concatenate the subfont matrix */

682

683 if ( top->has_font_matrix )

684 {

685 if ( top->units_per_em > 1 && sub->units_per_em > 1 )

686 scaling = FT_MIN( top->units_per_em, sub->units_per_em );

687 else

688 scaling = 1;

689

690 FT_Matrix_Multiply_Scaled( &top->font_matrix,

691 &sub->font_matrix,

692 scaling );

693 FT_Vector_Transform_Scaled( &sub->font_offset,

694 &top->font_matrix,

695 scaling );

696

697 sub->units_per_em = FT_MulDiv( sub->units_per_em,

698 top->units_per_em,

699 scaling );

700 }

701 }

702 else

703 {

704 sub->font_matrix = top->font_matrix;

705 sub->font_offset = top->font_offset;

706

707 sub->units_per_em = top->units_per_em;

708 }

709

710 matrix = &sub->font_matrix;

711 offset = &sub->font_offset;

712 upm = &sub->units_per_em;

713 temp = FT_ABS( matrix->yy );

714

715 if ( temp != 0x10000L )

716 {

717 upm = FT_DivFix( upm, temp );

718

719 matrix->xx = FT_DivFix( matrix->xx, temp );

720 matrix->yx = FT_DivFix( matrix->yx, temp );

721 matrix->xy = FT_DivFix( matrix->xy, temp );

722 matrix->yy = FT_DivFix( matrix->yy, temp );

723 offset->x = FT_DivFix( offset->x, temp );

724 offset->y = FT_DivFix( offset->y, temp );

725 }

726

727 offset->x >>= 16;

728 offset->y >>= 16;

729 }

730

731 if ( pure_cff )

732 {

733 char* style_name = NULL;

734

735

736 /* set up num_faces */

737 cffface->num_faces = cff->num_faces;

738

739 /* compute number of glyphs */

740 if ( dict->cid_registry != 0xFFFFU )

741 cffface->num_glyphs = cff->charset.max_cid + 1;

742 else

743 cffface->num_glyphs = cff->charstrings_index.count;

744

745 /* set global bbox, as well as EM size */

746 cffface->bbox.xMin = dict->font_bbox.xMin >> 16;

747 cffface->bbox.yMin = dict->font_bbox.yMin >> 16;

748 /* no `U' suffix here to 0xFFFF! */

749 cffface->bbox.xMax = ( dict->font_bbox.xMax + 0xFFFF ) >> 16;

750 cffface->bbox.yMax = ( dict->font_bbox.yMax + 0xFFFF ) >> 16;

751

752 cffface->units_per_EM = (FT_UShort)( dict->units_per_em );

753

754 cffface->ascender = (FT_Short)( cffface->bbox.yMax );

755 cffface->descender = (FT_Short)( cffface->bbox.yMin );

756

757 cffface->height = (FT_Short)( ( cffface->units_per_EM * 12 ) / 10 );

758 if ( cffface->height < cffface->ascender - cffface->descender )

759 cffface->height = (FT_Short)( cffface->ascender - cffface->descender ) ;

760

761 cffface->underline_position =

762 (FT_Short)( dict->underline_position >> 16 );

763 cffface->underline_thickness =

764 (FT_Short)( dict->underline_thickness >> 16 );

765

766 /* retrieve font family & style name */

767 cffface->family_name = cff_index_get_name( cff, face_index );

768 if ( cffface->family_name )

769 {

770 char* full = cff_index_get_sid_string( cff,

771 dict->full_name );

772 char* fullp = full;

773 char* family = cffface->family_name;

774 char* family_name = NULL;

775

776

777 remove_subset_prefix( cffface->family_name );

778

779 if ( dict->family_name )

780 {

781 family_name = cff_index_get_sid_string( cff,

782 dict->family_name );

783 if ( family_name )

784 family = family_name;

785 }

786

787 /* We try to extract the style name from the full name. */

788 /* We need to ignore spaces and dashes during the search. */

789 if ( full && family )

790 {

791 while ( *fullp )

792 {

793 /* skip common characters at the start of both strings */

794 if ( fullp == family )

795 {

796 family++;

797 fullp++;

798 continue;

799 }

800

801 /* ignore spaces and dashes in full name during comparison */

802 if ( fullp == ' ' \|\| fullp == '-' )

803 {

804 fullp++;

805 continue;

806 }

807

808 /* ignore spaces and dashes in family name during comparison */

809 if ( family == ' ' \|\| family == '-' )

810 {

811 family++;

812 continue;

813 }

814

815 if ( !family && fullp )

816 {

817 /* The full name begins with the same characters as the */

818 /* family name, with spaces and dashes removed. In this */

819 /* case, the remaining string in `fullp' will be used as */

820 /* the style name. */

821 style_name = cff_strcpy( memory, fullp );

822

823 /* remove the style part from the family name (if present) */

824 remove_style( cffface->family_name, style_name );

825 }

826 break;

827 }

828 }

829 }

830 else

831 {

832 char *cid_font_name =

833 cff_index_get_sid_string( cff,

834 dict->cid_font_name );

835

836

837 /* do we have a `/FontName' for a CID-keyed font? */

838 if ( cid_font_name )

839 cffface->family_name = cff_strcpy( memory, cid_font_name );

840 }

841

842 if ( style_name )

843 cffface->style_name = style_name;

844 else

845 /* assume "Regular" style if we don't know better */

846 cffface->style_name = cff_strcpy( memory, (char *)"Regular" );

847

848 /*******************************************************************/

849 /* */

850 /* Compute face flags. */

851 /* */

852 flags = FT_FACE_FLAG_SCALABLE \| /* scalable outlines */

853 FT_FACE_FLAG_HORIZONTAL \| /* horizontal data */

854 FT_FACE_FLAG_HINTER; /* has native hinter */

855

856 if ( sfnt_format )

857 flags \|= FT_FACE_FLAG_SFNT;

858

859 /* fixed width font? */

860 if ( dict->is_fixed_pitch )

861 flags \|= FT_FACE_FLAG_FIXED_WIDTH;

862

863 /* XXX: WE DO NOT SUPPORT KERNING METRICS IN THE GPOS TABLE FOR NOW */

864 #if 0

865 /* kerning available? */

866 if ( face->kern_pairs )

867 flags \|= FT_FACE_FLAG_KERNING;

868 #endif

869

870 cffface->face_flags = flags;

871

872 /*******************************************************************/

873 /* */

874 /* Compute style flags. */

875 /* */

876 flags = 0;

877

878 if ( dict->italic_angle )

879 flags \|= FT_STYLE_FLAG_ITALIC;

880

881 {

882 char *weight = cff_index_get_sid_string( cff,

883 dict->weight );

884

885

886 if ( weight )

887 if ( !ft_strcmp( weight, "Bold" ) \|\|

888 !ft_strcmp( weight, "Black" ) )

889 flags \|= FT_STYLE_FLAG_BOLD;

890 }

891

892 /* double check */

893 if ( !(flags & FT_STYLE_FLAG_BOLD) && cffface->style_name )

894 if ( !ft_strncmp( cffface->style_name, "Bold", 4 ) \|\|

895 !ft_strncmp( cffface->style_name, "Black", 5 ) )

896 flags \|= FT_STYLE_FLAG_BOLD;

897

898 if ( !(flags & FT_STYLE_FLAG_ITALIC) && cffface->style_name )

899 if ( !ft_strncmp( cffface->style_name, "Italic", 6 ) )

900 flags \|= FT_STYLE_FLAG_ITALIC;

901

902 cffface->style_flags = flags;

903 }

904

905

906 #ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES

907 /* CID-keyed CFF fonts don't have glyph names -- the SFNT loader */

908 /* has unset this flag because of the 3.0 `post' table. */

909 if ( dict->cid_registry == 0xFFFFU )

910 cffface->face_flags \|= FT_FACE_FLAG_GLYPH_NAMES;

911 #endif

912

913 if ( dict->cid_registry != 0xFFFFU && pure_cff )

914 cffface->face_flags \|= FT_FACE_FLAG_CID_KEYED;

915

916

917 /*******************************************************************/

918 /* */

919 /* Compute char maps. */

920 /* */

921

922 /* Try to synthesize a Unicode charmap if there is none available */

923 /* already. If an OpenType font contains a Unicode "cmap", we */

924 /* will use it, whatever be in the CFF part of the file. */

925 {

926 FT_CharMapRec cmaprec;

927 FT_CharMap cmap;

928 FT_UInt nn;

929 CFF_Encoding encoding = &cff->encoding;

930

931

932 for ( nn = 0; nn < (FT_UInt)cffface->num_charmaps; nn++ )

933 {

934 cmap = cffface->charmaps[nn];

935

936 /* Windows Unicode? */

937 if ( cmap->platform_id == TT_PLATFORM_MICROSOFT &&

938 cmap->encoding_id == TT_MS_ID_UNICODE_CS )

939 goto Skip_Unicode;

940

941 /* Apple Unicode platform id? */

942 if ( cmap->platform_id == TT_PLATFORM_APPLE_UNICODE )

943 goto Skip_Unicode; /* Apple Unicode */

944 }

945

946 /* since CID-keyed fonts don't contain glyph names, we can't */

947 /* construct a cmap */

948 if ( pure_cff && cff->top_font.font_dict.cid_registry != 0xFFFFU )

949 goto Exit;

950

951 #ifdef FT_MAX_CHARMAP_CACHEABLE

952 if ( nn + 1 > FT_MAX_CHARMAP_CACHEABLE )

953 {

954 FT_ERROR(( "cff_face_init: no Unicode cmap is found, "

955 "and too many subtables (%d) to add synthesized cmap\n",

956 nn ));

957 goto Exit;

958 }

959 #endif

960

961 /* we didn't find a Unicode charmap -- synthesize one */

962 cmaprec.face = cffface;

963 cmaprec.platform_id = TT_PLATFORM_MICROSOFT;

964 cmaprec.encoding_id = TT_MS_ID_UNICODE_CS;

965 cmaprec.encoding = FT_ENCODING_UNICODE;

966

967 nn = (FT_UInt)cffface->num_charmaps;

968

969 error = FT_CMap_New( &CFF_CMAP_UNICODE_CLASS_REC_GET, NULL,

970 &cmaprec, NULL );

971 if ( error &&

972 FT_ERR_NEQ( error, No_Unicode_Glyph_Name ) )

973 goto Exit;

974 error = FT_Err_Ok;

975

976 /* if no Unicode charmap was previously selected, select this one */

977 if ( cffface->charmap == NULL && nn != (FT_UInt)cffface->num_charmaps )

978 cffface->charmap = cffface->charmaps[nn];

979

980 Skip_Unicode:

981 #ifdef FT_MAX_CHARMAP_CACHEABLE

982 if ( nn > FT_MAX_CHARMAP_CACHEABLE )

983 {

984 FT_ERROR(( "cff_face_init: Unicode cmap is found, "

985 "but too many preceding subtables (%d) to access\n",

986 nn - 1 ));

987 goto Exit;

988 }

989 #endif

990 if ( encoding->count > 0 )

991 {

992 FT_CMap_Class clazz;

993

994

995 cmaprec.face = cffface;

996 cmaprec.platform_id = TT_PLATFORM_ADOBE; /* Adobe platform id */

997

998 if ( encoding->offset == 0 )

999 {

1000 cmaprec.encoding_id = TT_ADOBE_ID_STANDARD;

1001 cmaprec.encoding = FT_ENCODING_ADOBE_STANDARD;

1002 clazz = &CFF_CMAP_ENCODING_CLASS_REC_GET;

1003 }

1004 else if ( encoding->offset == 1 )

1005 {

1006 cmaprec.encoding_id = TT_ADOBE_ID_EXPERT;

1007 cmaprec.encoding = FT_ENCODING_ADOBE_EXPERT;

1008 clazz = &CFF_CMAP_ENCODING_CLASS_REC_GET;

1009 }

1010 else

1011 {

1012 cmaprec.encoding_id = TT_ADOBE_ID_CUSTOM;

1013 cmaprec.encoding = FT_ENCODING_ADOBE_CUSTOM;

1014 clazz = &CFF_CMAP_ENCODING_CLASS_REC_GET;

1015 }

1016

1017 error = FT_CMap_New( clazz, NULL, &cmaprec, NULL );

1018 }

1019 }

1020 }

1021

1022 Exit:

1023 return error;

1024 }

1025

1026

1027 FT_LOCAL_DEF( void )

1028 cff_face_done( FT_Face cffface ) /* CFF_Face */

1029 {

1030 CFF_Face face = (CFF_Face)cffface;

1031 FT_Memory memory;

1032 SFNT_Service sfnt;

1033

1034

1035 if ( !face )

1036 return;

1037

1038 memory = cffface->memory;

1039 sfnt = (SFNT_Service)face->sfnt;

1040

1041 if ( sfnt )

1042 sfnt->done_face( face );

1043

1044 {

1045 CFF_Font cff = (CFF_Font)face->extra.data;

1046

1047

1048 if ( cff )

1049 {

1050 cff_font_done( cff );

1051 FT_FREE( face->extra.data );

1052 }

1053 }

1054 }

1055

1056

1057 FT_LOCAL_DEF( FT_Error )

1058 cff_driver_init( FT_Module module ) /* CFF_Driver */

1059 {

1060 CFF_Driver driver = (CFF_Driver)module;

1061

1062

1063 /* set default property values */

1064 #ifdef CFF_CONFIG_OPTION_OLD_ENGINE

1065 driver->hinting_engine = FT_CFF_HINTING_FREETYPE;

1066 #else

1067 driver->hinting_engine = FT_CFF_HINTING_ADOBE;

1068 #endif

1069 driver->no_stem_darkening = FALSE;

1070

1071 return FT_Err_Ok;

1072 }

1073

1074

1075 FT_LOCAL_DEF( void )

1076 cff_driver_done( FT_Module module ) /* CFF_Driver */

1077 {

1078 FT_UNUSED( module );

1079 }

1080

1081

1082 /* END */

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