1 /***************************************************************************/ 2 /* */ 3 /* cffobjs.c */ 4 /* */ 5 /* OpenType objects manager (body). */ 6 /* */ 7 /* Copyright 1996-2015 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 <ft2build.h> 20 21 #include FT_INTERNAL_DEBUG_H 22 #include FT_INTERNAL_CALC_H 23 #include FT_INTERNAL_STREAM_H 24 #include FT_ERRORS_H 25 #include FT_TRUETYPE_IDS_H 26 #include FT_TRUETYPE_TAGS_H 27 #include FT_INTERNAL_SFNT_H 28 #include FT_CFF_DRIVER_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_Long top_upm = (FT_Long)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_Long sub_upm = (FT_Long)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_Long top_upm = (FT_Long)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_Long sub_upm = (FT_Long)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 = NULL; 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 ) /* `OTTO'; OpenType/CFF font */ 523 { 524 FT_TRACE2(( " not an OpenType/CFF font\n" )); 525 error = FT_THROW( Unknown_File_Format ); 526 goto Exit; 527 } 528 529 /* if we are performing a simple font format check, exit immediately */ 530 if ( face_index < 0 ) 531 return FT_Err_Ok; 532 533 sfnt_format = 1; 534 535 /* now, the font can be either an OpenType/CFF font, or an SVG CEF */ 536 /* font; in the latter case it doesn't have a `head' table */ 537 error = face->goto_table( face, TTAG_head, stream, 0 ); 538 if ( !error ) 539 { 540 pure_cff = 0; 541 542 /* load font directory */ 543 error = sfnt->load_face( stream, face, face_index, 544 num_params, params ); 545 if ( error ) 546 goto Exit; 547 } 548 else 549 { 550 /* load the `cmap' table explicitly */ 551 error = sfnt->load_cmap( face, stream ); 552 if ( error ) 553 goto Exit; 554 } 555 556 /* now load the CFF part of the file */ 557 error = face->goto_table( face, TTAG_CFF, stream, 0 ); 558 if ( error ) 559 goto Exit; 560 } 561 else 562 { 563 /* rewind to start of file; we are going to load a pure-CFF font */ 564 if ( FT_STREAM_SEEK( 0 ) ) 565 goto Exit; 566 error = FT_Err_Ok; 567 } 568 569 /* now load and parse the CFF table in the file */ 570 { 571 CFF_Font cff = NULL; 572 CFF_FontRecDict dict; 573 FT_Memory memory = cffface->memory; 574 FT_Int32 flags; 575 FT_UInt i; 576 577 578 if ( FT_NEW( cff ) ) 579 goto Exit; 580 581 face->extra.data = cff; 582 error = cff_font_load( library, stream, face_index, cff, pure_cff ); 583 if ( error ) 584 goto Exit; 585 586 /* if we are performing a simple font format check, exit immediately */ 587 /* (this is here for pure CFF) */ 588 if ( face_index < 0 ) 589 return FT_Err_Ok; 590 591 cff->pshinter = pshinter; 592 cff->psnames = psnames; 593 594 cffface->face_index = face_index & 0xFFFF; 595 596 /* Complement the root flags with some interesting information. */ 597 /* Note that this is only necessary for pure CFF and CEF fonts; */ 598 /* SFNT based fonts use the `name' table instead. */ 599 600 cffface->num_glyphs = (FT_Long)cff->num_glyphs; 601 602 dict = &cff->top_font.font_dict; 603 604 /* we need the `PSNames' module for CFF and CEF formats */ 605 /* which aren't CID-keyed */ 606 if ( dict->cid_registry == 0xFFFFU && !psnames ) 607 { 608 FT_ERROR(( "cff_face_init:" 609 " cannot open CFF & CEF fonts\n" 610 " " 611 " without the `PSNames' module\n" )); 612 error = FT_THROW( Missing_Module ); 613 goto Exit; 614 } 615 616 #ifdef FT_DEBUG_LEVEL_TRACE 617 { 618 FT_UInt idx; 619 FT_String* s; 620 621 622 FT_TRACE4(( "SIDs\n" )); 623 624 /* dump string index, including default strings for convenience */ 625 for ( idx = 0; idx < cff->num_strings + 390; idx++ ) 626 { 627 s = cff_index_get_sid_string( cff, idx ); 628 if ( s ) 629 FT_TRACE4((" %5d %s\n", idx, s )); 630 } 631 } 632 #endif /* FT_DEBUG_LEVEL_TRACE */ 633 634 if ( !dict->has_font_matrix ) 635 dict->units_per_em = pure_cff ? 1000 : face->root.units_per_EM; 636 637 /* Normalize the font matrix so that `matrix->yy' is 1; the */ 638 /* scaling is done with `units_per_em' then (at this point, */ 639 /* it already contains the scaling factor, but without */ 640 /* normalization of the matrix). */ 641 /* */ 642 /* Note that the offsets must be expressed in integer font */ 643 /* units. */ 644 645 { 646 FT_Matrix* matrix = &dict->font_matrix; 647 FT_Vector* offset = &dict->font_offset; 648 FT_ULong* upm = &dict->units_per_em; 649 FT_Fixed temp = FT_ABS( matrix->yy ); 650 651 652 if ( temp != 0x10000L ) 653 { 654 *upm = (FT_ULong)FT_DivFix( (FT_Long)*upm, temp ); 655 656 matrix->xx = FT_DivFix( matrix->xx, temp ); 657 matrix->yx = FT_DivFix( matrix->yx, temp ); 658 matrix->xy = FT_DivFix( matrix->xy, temp ); 659 matrix->yy = FT_DivFix( matrix->yy, temp ); 660 offset->x = FT_DivFix( offset->x, temp ); 661 offset->y = FT_DivFix( offset->y, temp ); 662 } 663 664 offset->x >>= 16; 665 offset->y >>= 16; 666 } 667 668 for ( i = cff->num_subfonts; i > 0; i-- ) 669 { 670 CFF_FontRecDict sub = &cff->subfonts[i - 1]->font_dict; 671 CFF_FontRecDict top = &cff->top_font.font_dict; 672 673 FT_Matrix* matrix; 674 FT_Vector* offset; 675 FT_ULong* upm; 676 FT_Fixed temp; 677 678 679 if ( sub->has_font_matrix ) 680 { 681 FT_Long scaling; 682 683 684 /* if we have a top-level matrix, */ 685 /* concatenate the subfont matrix */ 686 687 if ( top->has_font_matrix ) 688 { 689 if ( top->units_per_em > 1 && sub->units_per_em > 1 ) 690 scaling = (FT_Long)FT_MIN( top->units_per_em, 691 sub->units_per_em ); 692 else 693 scaling = 1; 694 695 FT_Matrix_Multiply_Scaled( &top->font_matrix, 696 &sub->font_matrix, 697 scaling ); 698 FT_Vector_Transform_Scaled( &sub->font_offset, 699 &top->font_matrix, 700 scaling ); 701 702 sub->units_per_em = (FT_ULong) 703 FT_MulDiv( (FT_Long)sub->units_per_em, 704 (FT_Long)top->units_per_em, 705 scaling ); 706 } 707 } 708 else 709 { 710 sub->font_matrix = top->font_matrix; 711 sub->font_offset = top->font_offset; 712 713 sub->units_per_em = top->units_per_em; 714 } 715 716 matrix = &sub->font_matrix; 717 offset = &sub->font_offset; 718 upm = &sub->units_per_em; 719 temp = FT_ABS( matrix->yy ); 720 721 if ( temp != 0x10000L ) 722 { 723 *upm = (FT_ULong)FT_DivFix( (FT_Long)*upm, temp ); 724 725 matrix->xx = FT_DivFix( matrix->xx, temp ); 726 matrix->yx = FT_DivFix( matrix->yx, temp ); 727 matrix->xy = FT_DivFix( matrix->xy, temp ); 728 matrix->yy = FT_DivFix( matrix->yy, temp ); 729 offset->x = FT_DivFix( offset->x, temp ); 730 offset->y = FT_DivFix( offset->y, temp ); 731 } 732 733 offset->x >>= 16; 734 offset->y >>= 16; 735 } 736 737 if ( pure_cff ) 738 { 739 char* style_name = NULL; 740 741 742 /* set up num_faces */ 743 cffface->num_faces = (FT_Long)cff->num_faces; 744 745 /* compute number of glyphs */ 746 if ( dict->cid_registry != 0xFFFFU ) 747 cffface->num_glyphs = (FT_Long)( cff->charset.max_cid + 1 ); 748 else 749 cffface->num_glyphs = (FT_Long)cff->charstrings_index.count; 750 751 /* set global bbox, as well as EM size */ 752 cffface->bbox.xMin = dict->font_bbox.xMin >> 16; 753 cffface->bbox.yMin = dict->font_bbox.yMin >> 16; 754 /* no `U' suffix here to 0xFFFF! */ 755 cffface->bbox.xMax = ( dict->font_bbox.xMax + 0xFFFF ) >> 16; 756 cffface->bbox.yMax = ( dict->font_bbox.yMax + 0xFFFF ) >> 16; 757 758 cffface->units_per_EM = (FT_UShort)( dict->units_per_em ); 759 760 cffface->ascender = (FT_Short)( cffface->bbox.yMax ); 761 cffface->descender = (FT_Short)( cffface->bbox.yMin ); 762 763 cffface->height = (FT_Short)( ( cffface->units_per_EM * 12 ) / 10 ); 764 if ( cffface->height < cffface->ascender - cffface->descender ) 765 cffface->height = (FT_Short)( cffface->ascender - cffface->descender ); 766 767 cffface->underline_position = 768 (FT_Short)( dict->underline_position >> 16 ); 769 cffface->underline_thickness = 770 (FT_Short)( dict->underline_thickness >> 16 ); 771 772 /* retrieve font family & style name */ 773 cffface->family_name = cff_index_get_name( 774 cff, 775 (FT_UInt)( face_index & 0xFFFF ) ); 776 if ( cffface->family_name ) 777 { 778 char* full = cff_index_get_sid_string( cff, 779 dict->full_name ); 780 char* fullp = full; 781 char* family = cffface->family_name; 782 char* family_name = NULL; 783 784 785 remove_subset_prefix( cffface->family_name ); 786 787 if ( dict->family_name ) 788 { 789 family_name = cff_index_get_sid_string( cff, 790 dict->family_name ); 791 if ( family_name ) 792 family = family_name; 793 } 794 795 /* We try to extract the style name from the full name. */ 796 /* We need to ignore spaces and dashes during the search. */ 797 if ( full && family ) 798 { 799 while ( *fullp ) 800 { 801 /* skip common characters at the start of both strings */ 802 if ( *fullp == *family ) 803 { 804 family++; 805 fullp++; 806 continue; 807 } 808 809 /* ignore spaces and dashes in full name during comparison */ 810 if ( *fullp == ' ' || *fullp == '-' ) 811 { 812 fullp++; 813 continue; 814 } 815 816 /* ignore spaces and dashes in family name during comparison */ 817 if ( *family == ' ' || *family == '-' ) 818 { 819 family++; 820 continue; 821 } 822 823 if ( !*family && *fullp ) 824 { 825 /* The full name begins with the same characters as the */ 826 /* family name, with spaces and dashes removed. In this */ 827 /* case, the remaining string in `fullp' will be used as */ 828 /* the style name. */ 829 style_name = cff_strcpy( memory, fullp ); 830 831 /* remove the style part from the family name (if present) */ 832 remove_style( cffface->family_name, style_name ); 833 } 834 break; 835 } 836 } 837 } 838 else 839 { 840 char *cid_font_name = 841 cff_index_get_sid_string( cff, 842 dict->cid_font_name ); 843 844 845 /* do we have a `/FontName' for a CID-keyed font? */ 846 if ( cid_font_name ) 847 cffface->family_name = cff_strcpy( memory, cid_font_name ); 848 } 849 850 if ( style_name ) 851 cffface->style_name = style_name; 852 else 853 /* assume "Regular" style if we don't know better */ 854 cffface->style_name = cff_strcpy( memory, (char *)"Regular" ); 855 856 /*******************************************************************/ 857 /* */ 858 /* Compute face flags. */ 859 /* */ 860 flags = FT_FACE_FLAG_SCALABLE | /* scalable outlines */ 861 FT_FACE_FLAG_HORIZONTAL | /* horizontal data */ 862 FT_FACE_FLAG_HINTER; /* has native hinter */ 863 864 if ( sfnt_format ) 865 flags |= FT_FACE_FLAG_SFNT; 866 867 /* fixed width font? */ 868 if ( dict->is_fixed_pitch ) 869 flags |= FT_FACE_FLAG_FIXED_WIDTH; 870 871 /* XXX: WE DO NOT SUPPORT KERNING METRICS IN THE GPOS TABLE FOR NOW */ 872 #if 0 873 /* kerning available? */ 874 if ( face->kern_pairs ) 875 flags |= FT_FACE_FLAG_KERNING; 876 #endif 877 878 cffface->face_flags |= flags; 879 880 /*******************************************************************/ 881 /* */ 882 /* Compute style flags. */ 883 /* */ 884 flags = 0; 885 886 if ( dict->italic_angle ) 887 flags |= FT_STYLE_FLAG_ITALIC; 888 889 { 890 char *weight = cff_index_get_sid_string( cff, 891 dict->weight ); 892 893 894 if ( weight ) 895 if ( !ft_strcmp( weight, "Bold" ) || 896 !ft_strcmp( weight, "Black" ) ) 897 flags |= FT_STYLE_FLAG_BOLD; 898 } 899 900 /* double check */ 901 if ( !(flags & FT_STYLE_FLAG_BOLD) && cffface->style_name ) 902 if ( !ft_strncmp( cffface->style_name, "Bold", 4 ) || 903 !ft_strncmp( cffface->style_name, "Black", 5 ) ) 904 flags |= FT_STYLE_FLAG_BOLD; 905 906 cffface->style_flags = flags; 907 } 908 909 910 #ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES 911 /* CID-keyed CFF fonts don't have glyph names -- the SFNT loader */ 912 /* has unset this flag because of the 3.0 `post' table. */ 913 if ( dict->cid_registry == 0xFFFFU ) 914 cffface->face_flags |= FT_FACE_FLAG_GLYPH_NAMES; 915 #endif 916 917 if ( dict->cid_registry != 0xFFFFU && pure_cff ) 918 cffface->face_flags |= FT_FACE_FLAG_CID_KEYED; 919 920 921 /*******************************************************************/ 922 /* */ 923 /* Compute char maps. */ 924 /* */ 925 926 /* Try to synthesize a Unicode charmap if there is none available */ 927 /* already. If an OpenType font contains a Unicode "cmap", we */ 928 /* will use it, whatever be in the CFF part of the file. */ 929 { 930 FT_CharMapRec cmaprec; 931 FT_CharMap cmap; 932 FT_UInt nn; 933 CFF_Encoding encoding = &cff->encoding; 934 935 936 for ( nn = 0; nn < (FT_UInt)cffface->num_charmaps; nn++ ) 937 { 938 cmap = cffface->charmaps[nn]; 939 940 /* Windows Unicode? */ 941 if ( cmap->platform_id == TT_PLATFORM_MICROSOFT && 942 cmap->encoding_id == TT_MS_ID_UNICODE_CS ) 943 goto Skip_Unicode; 944 945 /* Apple Unicode platform id? */ 946 if ( cmap->platform_id == TT_PLATFORM_APPLE_UNICODE ) 947 goto Skip_Unicode; /* Apple Unicode */ 948 } 949 950 /* since CID-keyed fonts don't contain glyph names, we can't */ 951 /* construct a cmap */ 952 if ( pure_cff && cff->top_font.font_dict.cid_registry != 0xFFFFU ) 953 goto Exit; 954 955 /* we didn't find a Unicode charmap -- synthesize one */ 956 cmaprec.face = cffface; 957 cmaprec.platform_id = TT_PLATFORM_MICROSOFT; 958 cmaprec.encoding_id = TT_MS_ID_UNICODE_CS; 959 cmaprec.encoding = FT_ENCODING_UNICODE; 960 961 nn = (FT_UInt)cffface->num_charmaps; 962 963 error = FT_CMap_New( &CFF_CMAP_UNICODE_CLASS_REC_GET, NULL, 964 &cmaprec, NULL ); 965 if ( error && 966 FT_ERR_NEQ( error, No_Unicode_Glyph_Name ) ) 967 goto Exit; 968 error = FT_Err_Ok; 969 970 /* if no Unicode charmap was previously selected, select this one */ 971 if ( cffface->charmap == NULL && nn != (FT_UInt)cffface->num_charmaps ) 972 cffface->charmap = cffface->charmaps[nn]; 973 974 Skip_Unicode: 975 if ( encoding->count > 0 ) 976 { 977 FT_CMap_Class clazz; 978 979 980 cmaprec.face = cffface; 981 cmaprec.platform_id = TT_PLATFORM_ADOBE; /* Adobe platform id */ 982 983 if ( encoding->offset == 0 ) 984 { 985 cmaprec.encoding_id = TT_ADOBE_ID_STANDARD; 986 cmaprec.encoding = FT_ENCODING_ADOBE_STANDARD; 987 clazz = &CFF_CMAP_ENCODING_CLASS_REC_GET; 988 } 989 else if ( encoding->offset == 1 ) 990 { 991 cmaprec.encoding_id = TT_ADOBE_ID_EXPERT; 992 cmaprec.encoding = FT_ENCODING_ADOBE_EXPERT; 993 clazz = &CFF_CMAP_ENCODING_CLASS_REC_GET; 994 } 995 else 996 { 997 cmaprec.encoding_id = TT_ADOBE_ID_CUSTOM; 998 cmaprec.encoding = FT_ENCODING_ADOBE_CUSTOM; 999 clazz = &CFF_CMAP_ENCODING_CLASS_REC_GET; 1000 } 1001 1002 error = FT_CMap_New( clazz, NULL, &cmaprec, NULL ); 1003 } 1004 } 1005 } 1006 1007 Exit: 1008 return error; 1009 } 1010 1011 1012 FT_LOCAL_DEF( void ) 1013 cff_face_done( FT_Face cffface ) /* CFF_Face */ 1014 { 1015 CFF_Face face = (CFF_Face)cffface; 1016 FT_Memory memory; 1017 SFNT_Service sfnt; 1018 1019 1020 if ( !face ) 1021 return; 1022 1023 memory = cffface->memory; 1024 sfnt = (SFNT_Service)face->sfnt; 1025 1026 if ( sfnt ) 1027 sfnt->done_face( face ); 1028 1029 { 1030 CFF_Font cff = (CFF_Font)face->extra.data; 1031 1032 1033 if ( cff ) 1034 { 1035 cff_font_done( cff ); 1036 FT_FREE( face->extra.data ); 1037 } 1038 } 1039 } 1040 1041 1042 FT_LOCAL_DEF( FT_Error ) 1043 cff_driver_init( FT_Module module ) /* CFF_Driver */ 1044 { 1045 CFF_Driver driver = (CFF_Driver)module; 1046 1047 1048 /* set default property values, cf. `ftcffdrv.h' */ 1049 #ifdef CFF_CONFIG_OPTION_OLD_ENGINE 1050 driver->hinting_engine = FT_CFF_HINTING_FREETYPE; 1051 #else 1052 driver->hinting_engine = FT_CFF_HINTING_ADOBE; 1053 #endif 1054 1055 driver->no_stem_darkening = FALSE; 1056 1057 driver->darken_params[0] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1; 1058 driver->darken_params[1] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1; 1059 driver->darken_params[2] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2; 1060 driver->darken_params[3] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2; 1061 driver->darken_params[4] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3; 1062 driver->darken_params[5] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3; 1063 driver->darken_params[6] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4; 1064 driver->darken_params[7] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4; 1065 1066 return FT_Err_Ok; 1067 } 1068 1069 1070 FT_LOCAL_DEF( void ) 1071 cff_driver_done( FT_Module module ) /* CFF_Driver */ 1072 { 1073 FT_UNUSED( module ); 1074 } 1075 1076 1077 /* END */ 1078
