core/src/fxge/fx_freetype/fxft2.5.01/src/type1/t1objs.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 /* t1objs.c */

4 /* */

5 /* Type 1 objects manager (body). */

6 /* */

7 /* Copyright 1996-2009, 2011, 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 #include "../../include/freetype/internal/ftcalc.h"

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

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

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

24

25 #include "t1gload.h"

26 #include "t1load.h"

27

28 #include "t1errors.h"

29

30 #ifndef T1_CONFIG_OPTION_NO_AFM

31 #include "t1afm.h"

32 #endif

33

34 #include "../../include/freetype/internal/services/svpscmap.h"

35 #include "../../include/freetype/internal/psaux.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_t1objs

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 T1_Size_Get_Globals_Funcs( T1_Size size )

60 {

61 T1_Face face = (T1_Face)size->root.face;

62 PSHinter_Service pshinter = (PSHinter_Service)face->pshinter;

63 FT_Module module;

64

65

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

67 "pshinter" );

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

69 ? pshinter->get_globals_funcs( module )

70 : 0 ;

71 }

72

73

74 FT_LOCAL_DEF( void )

75 T1_Size_Done( FT_Size t1size ) /* T1_Size */

76 {

77 T1_Size size = (T1_Size)t1size;

78

79

80 if ( size->root.internal )

81 {

82 PSH_Globals_Funcs funcs;

83

84

85 funcs = T1_Size_Get_Globals_Funcs( size );

86 if ( funcs )

87 funcs->destroy( (PSH_Globals)size->root.internal );

88

89 size->root.internal = 0;

90 }

91 }

92

93

94 FT_LOCAL_DEF( FT_Error )

95 T1_Size_Init( FT_Size t1size ) /* T1_Size */

96 {

97 T1_Size size = (T1_Size)t1size;

98 FT_Error error = FT_Err_Ok;

99 PSH_Globals_Funcs funcs = T1_Size_Get_Globals_Funcs( size );

100

101

102 if ( funcs )

103 {

104 PSH_Globals globals;

105 T1_Face face = (T1_Face)size->root.face;

106

107

108 error = funcs->create( size->root.face->memory,

109 &face->type1.private_dict, &globals );

110 if ( !error )

111 size->root.internal = (FT_Size_Internal)(void*)globals;

112 }

113

114 return error;

115 }

116

117

118 FT_LOCAL_DEF( FT_Error )

119 T1_Size_Request( FT_Size t1size, /* T1_Size */

120 FT_Size_Request req )

121 {

122 T1_Size size = (T1_Size)t1size;

123 PSH_Globals_Funcs funcs = T1_Size_Get_Globals_Funcs( size );

124

125

126 FT_Request_Metrics( size->root.face, req );

127

128 if ( funcs )

129 funcs->set_scale( (PSH_Globals)size->root.internal,

130 size->root.metrics.x_scale,

131 size->root.metrics.y_scale,

132 0, 0 );

133

134 return FT_Err_Ok;

135 }

136

137

138 /*************************************************************************/

139 /* */

140 /* SLOT FUNCTIONS */

141 /* */

142 /*************************************************************************/

143

144 FT_LOCAL_DEF( void )

145 T1_GlyphSlot_Done( FT_GlyphSlot slot )

146 {

147 slot->internal->glyph_hints = 0;

148 }

149

150

151 FT_LOCAL_DEF( FT_Error )

152 T1_GlyphSlot_Init( FT_GlyphSlot slot )

153 {

154 T1_Face face;

155 PSHinter_Service pshinter;

156

157

158 face = (T1_Face)slot->face;

159 pshinter = (PSHinter_Service)face->pshinter;

160

161 if ( pshinter )

162 {

163 FT_Module module;

164

165

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

167 "pshinter" );

168 if ( module )

169 {

170 T1_Hints_Funcs funcs;

171

172

173 funcs = pshinter->get_t1_funcs( module );

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

175 }

176 }

177

178 return 0;

179 }

180

181

182 /*************************************************************************/

183 /* */

184 /* FACE FUNCTIONS */

185 /* */

186 /*************************************************************************/

187

188

189 /*************************************************************************/

190 /* */

191 /* <Function> */

192 /* T1_Face_Done */

193 /* */

194 /* <Description> */

195 /* The face object destructor. */

196 /* */

197 /* <Input> */

198 /* face :: A typeless pointer to the face object to destroy. */

199 /* */

200 FT_LOCAL_DEF( void )

201 T1_Face_Done( FT_Face t1face ) /* T1_Face */

202 {

203 T1_Face face = (T1_Face)t1face;

204 FT_Memory memory;

205 T1_Font type1;

206

207

208 if ( !face )

209 return;

210

211 memory = face->root.memory;

212 type1 = &face->type1;

213

214 #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT

215 /* release multiple masters information */

216 FT_ASSERT( ( face->len_buildchar == 0 ) == ( face->buildchar == NULL ) );

217

218 if ( face->buildchar )

219 {

220 FT_FREE( face->buildchar );

221

222 face->buildchar = NULL;

223 face->len_buildchar = 0;

224 }

225

226 T1_Done_Blend( face );

227 face->blend = 0;

228 #endif

229

230 /* release font info strings */

231 {

232 PS_FontInfo info = &type1->font_info;

233

234

235 FT_FREE( info->version );

236 FT_FREE( info->notice );

237 FT_FREE( info->full_name );

238 FT_FREE( info->family_name );

239 FT_FREE( info->weight );

240 }

241

242 /* release top dictionary */

243 FT_FREE( type1->charstrings_len );

244 FT_FREE( type1->charstrings );

245 FT_FREE( type1->glyph_names );

246

247 FT_FREE( type1->subrs );

248 FT_FREE( type1->subrs_len );

249

250 FT_FREE( type1->subrs_block );

251 FT_FREE( type1->charstrings_block );

252 FT_FREE( type1->glyph_names_block );

253

254 FT_FREE( type1->encoding.char_index );

255 FT_FREE( type1->encoding.char_name );

256 FT_FREE( type1->font_name );

257

258 #ifndef T1_CONFIG_OPTION_NO_AFM

259 /* release afm data if present */

260 if ( face->afm_data )

261 T1_Done_Metrics( memory, (AFM_FontInfo)face->afm_data );

262 #endif

263

264 /* release unicode map, if any */

265 #if 0

266 FT_FREE( face->unicode_map_rec.maps );

267 face->unicode_map_rec.num_maps = 0;

268 face->unicode_map = NULL;

269 #endif

270

271 face->root.family_name = NULL;

272 face->root.style_name = NULL;

273 }

274

275

276 /*************************************************************************/

277 /* */

278 /* <Function> */

279 /* T1_Face_Init */

280 /* */

281 /* <Description> */

282 /* The face object constructor. */

283 /* */

284 /* <Input> */

285 /* stream :: input stream where to load font data. */

286 /* */

287 /* face_index :: The index of the font face in the resource. */

288 /* */

289 /* num_params :: Number of additional generic parameters. Ignored. */

290 /* */

291 /* params :: Additional generic parameters. Ignored. */

292 /* */

293 /* <InOut> */

294 /* face :: The face record to build. */

295 /* */

296 /* <Return> */

297 /* FreeType error code. 0 means success. */

298 /* */

299 FT_LOCAL_DEF( FT_Error )

300 T1_Face_Init( FT_Stream stream,

301 FT_Face t1face, /* T1_Face */

302 FT_Int face_index,

303 FT_Int num_params,

304 FT_Parameter* params )

305 {

306 T1_Face face = (T1_Face)t1face;

307 FT_Error error;

308 FT_Service_PsCMaps psnames;

309 PSAux_Service psaux;

310 T1_Font type1 = &face->type1;

311 PS_FontInfo info = &type1->font_info;

312

313 FT_UNUSED( num_params );

314 FT_UNUSED( params );

315 FT_UNUSED( stream );

316

317

318 face->root.num_faces = 1;

319

320 FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS );

321 face->psnames = psnames;

322

323 face->psaux = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ),

324 "psaux" );

325 psaux = (PSAux_Service)face->psaux;

326 if ( !psaux )

327 {

328 FT_ERROR(( "T1_Face_Init: cannot access `psaux' module\n" ));

329 error = FT_THROW( Missing_Module );

330 goto Exit;

331 }

332

333 face->pshinter = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ),

334 "pshinter" );

335

336 FT_TRACE2(( "Type 1 driver\n" ));

337

338 /* open the tokenizer; this will also check the font format */

339 error = T1_Open_Face( face );

340 if ( error )

341 goto Exit;

342

343 /* if we just wanted to check the format, leave successfully now */

344 if ( face_index < 0 )

345 goto Exit;

346

347 /* check the face index */

348 if ( face_index > 0 )

349 {

350 FT_ERROR(( "T1_Face_Init: invalid face index\n" ));

351 error = FT_THROW( Invalid_Argument );

352 goto Exit;

353 }

354

355 /* now load the font program into the face object */

356

357 /* initialize the face object fields */

358

359 /* set up root face fields */

360 {

361 FT_Face root = (FT_Face)&face->root;

362

363

364 root->num_glyphs = type1->num_glyphs;

365 root->face_index = 0;

366

367 root->face_flags = FT_FACE_FLAG_SCALABLE \|

368 FT_FACE_FLAG_HORIZONTAL \|

369 FT_FACE_FLAG_GLYPH_NAMES \|

370 FT_FACE_FLAG_HINTER;

371

372 if ( info->is_fixed_pitch )

373 root->face_flags \|= FT_FACE_FLAG_FIXED_WIDTH;

374

375 if ( face->blend )

376 root->face_flags \|= FT_FACE_FLAG_MULTIPLE_MASTERS;

377

378 /* XXX: TODO -- add kerning with .afm support */

379

380

381 /* The following code to extract the family and the style is very */

382 /* simplistic and might get some things wrong. For a full-featured */

383 /* algorithm you might have a look at the whitepaper given at */

384 /* */

385 /* http://blogs.msdn.com/text/archive/2007/04/23/wpf-font-selection-mode l.aspx */

386

387 /* get style name -- be careful, some broken fonts only */

388 /* have a `/FontName' dictionary entry! */

389 root->family_name = info->family_name;

390 root->style_name = NULL;

391

392 if ( root->family_name )

393 {

394 char* full = info->full_name;

395 char* family = root->family_name;

396

397

398 if ( full )

399 {

400 FT_Bool the_same = TRUE;

401

402

403 while ( *full )

404 {

405 if ( full == family )

406 {

407 family++;

408 full++;

409 }

410 else

411 {

412 if ( full == ' ' \|\| full == '-' )

413 full++;

414 else if ( family == ' ' \|\| family == '-' )

415 family++;

416 else

417 {

418 the_same = FALSE;

419

420 if ( !*family )

421 root->style_name = full;

422 break;

423 }

424 }

425 }

426

427 if ( the_same )

428 root->style_name = (char *)"Regular";

429 }

430 }

431 else

432 {

433 /* do we have a `/FontName'? */

434 if ( type1->font_name )

435 root->family_name = type1->font_name;

436 }

437

438 if ( !root->style_name )

439 {

440 if ( info->weight )

441 root->style_name = info->weight;

442 else

443 /* assume `Regular' style because we don't know better */

444 root->style_name = (char *)"Regular";

445 }

446

447 /* compute style flags */

448 root->style_flags = 0;

449 if ( info->italic_angle )

450 root->style_flags \|= FT_STYLE_FLAG_ITALIC;

451 if ( info->weight )

452 {

453 if ( !ft_strcmp( info->weight, "Bold" ) \|\|

454 !ft_strcmp( info->weight, "Black" ) )

455 root->style_flags \|= FT_STYLE_FLAG_BOLD;

456 }

457

458 /* no embedded bitmap support */

459 root->num_fixed_sizes = 0;

460 root->available_sizes = 0;

461

462 root->bbox.xMin = type1->font_bbox.xMin >> 16;

463 root->bbox.yMin = type1->font_bbox.yMin >> 16;

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

465 root->bbox.xMax = ( type1->font_bbox.xMax + 0xFFFF ) >> 16;

466 root->bbox.yMax = ( type1->font_bbox.yMax + 0xFFFF ) >> 16;

467

468 /* Set units_per_EM if we didn't set it in t1_parse_font_matrix. */

469 if ( !root->units_per_EM )

470 root->units_per_EM = 1000;

471

472 root->ascender = (FT_Short)( root->bbox.yMax );

473 root->descender = (FT_Short)( root->bbox.yMin );

474

475 root->height = (FT_Short)( ( root->units_per_EM * 12 ) / 10 );

476 if ( root->height < root->ascender - root->descender )

477 root->height = (FT_Short)( root->ascender - root->descender );

478

479 /* now compute the maximum advance width */

480 root->max_advance_width =

481 (FT_Short)( root->bbox.xMax );

482 {

483 FT_Pos max_advance;

484

485

486 error = T1_Compute_Max_Advance( face, &max_advance );

487

488 /* in case of error, keep the standard width */

489 if ( !error )

490 root->max_advance_width = (FT_Short)FIXED_TO_INT( max_advance );

491 else

492 error = FT_Err_Ok; /* clear error */

493 }

494

495 root->max_advance_height = root->height;

496

497 root->underline_position = (FT_Short)info->underline_position;

498 root->underline_thickness = (FT_Short)info->underline_thickness;

499 }

500

501 {

502 FT_Face root = &face->root;

503

504

505 if ( psnames )

506 {

507 FT_CharMapRec charmap;

508 T1_CMap_Classes cmap_classes = psaux->t1_cmap_classes;

509 FT_CMap_Class clazz;

510

511

512 charmap.face = root;

513

514 /* first of all, try to synthesize a Unicode charmap */

515 charmap.platform_id = TT_PLATFORM_MICROSOFT;

516 charmap.encoding_id = TT_MS_ID_UNICODE_CS;

517 charmap.encoding = FT_ENCODING_UNICODE;

518

519 error = FT_CMap_New( cmap_classes->unicode, NULL, &charmap, NULL );

520 if ( error &&

521 FT_ERR_NEQ( error, No_Unicode_Glyph_Name ) )

522 goto Exit;

523 error = FT_Err_Ok;

524

525 /* now, generate an Adobe Standard encoding when appropriate */

526 charmap.platform_id = TT_PLATFORM_ADOBE;

527 clazz = NULL;

528

529 switch ( type1->encoding_type )

530 {

531 case T1_ENCODING_TYPE_STANDARD:

532 charmap.encoding = FT_ENCODING_ADOBE_STANDARD;

533 charmap.encoding_id = TT_ADOBE_ID_STANDARD;

534 clazz = cmap_classes->standard;

535 break;

536

537 case T1_ENCODING_TYPE_EXPERT:

538 charmap.encoding = FT_ENCODING_ADOBE_EXPERT;

539 charmap.encoding_id = TT_ADOBE_ID_EXPERT;

540 clazz = cmap_classes->expert;

541 break;

542

543 case T1_ENCODING_TYPE_ARRAY:

544 charmap.encoding = FT_ENCODING_ADOBE_CUSTOM;

545 charmap.encoding_id = TT_ADOBE_ID_CUSTOM;

546 clazz = cmap_classes->custom;

547 break;

548

549 case T1_ENCODING_TYPE_ISOLATIN1:

550 charmap.encoding = FT_ENCODING_ADOBE_LATIN_1;

551 charmap.encoding_id = TT_ADOBE_ID_LATIN_1;

552 clazz = cmap_classes->unicode;

553 break;

554

555 default:

556 ;

557 }

558

559 if ( clazz )

560 error = FT_CMap_New( clazz, NULL, &charmap, NULL );

561

562 #if 0

563 /* Select default charmap */

564 if (root->num_charmaps)

565 root->charmap = root->charmaps[0];

566 #endif

567 }

568 }

569

570 Exit:

571 return error;

572 }

573

574

575 /*************************************************************************/

576 /* */

577 /* <Function> */

578 /* T1_Driver_Init */

579 /* */

580 /* <Description> */

581 /* Initializes a given Type 1 driver object. */

582 /* */

583 /* <Input> */

584 /* driver :: A handle to the target driver object. */

585 /* */

586 /* <Return> */

587 /* FreeType error code. 0 means success. */

588 /* */

589 FT_LOCAL_DEF( FT_Error )

590 T1_Driver_Init( FT_Module driver )

591 {

592 FT_UNUSED( driver );

593

594 return FT_Err_Ok;

595 }

596

597

598 /*************************************************************************/

599 /* */

600 /* <Function> */

601 /* T1_Driver_Done */

602 /* */

603 /* <Description> */

604 /* Finalizes a given Type 1 driver. */

605 /* */

606 /* <Input> */

607 /* driver :: A handle to the target Type 1 driver. */

608 /* */

609 FT_LOCAL_DEF( void )

610 T1_Driver_Done( FT_Module driver )

611 {

612 FT_UNUSED( driver );

613 }

614

615

616 /* END */

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