1/* 2 * Copyright © 2009 Red Hat, Inc. 3 * Copyright © 2009 Keith Stribley 4 * Copyright © 2015 Google, Inc. 5 * 6 * This is part of HarfBuzz, a text shaping library. 7 * 8 * Permission is hereby granted, without written agreement and without 9 * license or royalty fees, to use, copy, modify, and distribute this 10 * software and its documentation for any purpose, provided that the 11 * above copyright notice and the following two paragraphs appear in 12 * all copies of this software. 13 * 14 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 15 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 16 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 17 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 18 * DAMAGE. 19 * 20 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 21 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 22 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 23 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 24 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 25 * 26 * Red Hat Author(s): Behdad Esfahbod 27 * Google Author(s): Behdad Esfahbod 28 */ 29 30#include "hb-private.hh" 31 32#include "hb-ft.h" 33 34#include "hb-font-private.hh" 35 36#include FT_ADVANCES_H 37#include FT_TRUETYPE_TABLES_H 38 39 40 41#ifndef HB_DEBUG_FT 42#define HB_DEBUG_FT (HB_DEBUG+0) 43#endif 44 45 46/* TODO: 47 * 48 * In general, this file does a fine job of what it's supposed to do. 49 * There are, however, things that need more work: 50 * 51 * - I remember seeing FT_Get_Advance() without the NO_HINTING flag to be buggy. 52 * Have not investigated. 53 * 54 * - FreeType works in 26.6 mode. Clients can decide to use that mode, and everything 55 * would work fine. However, we also abuse this API for performing in font-space, 56 * but don't pass the correct flags to FreeType. We just abuse the no-hinting mode 57 * for that, such that no rounding etc happens. As such, we don't set ppem, and 58 * pass NO_HINTING as load_flags. Would be much better to use NO_SCALE, and scale 59 * ourselves, like we do in uniscribe, etc. 60 * 61 * - We don't handle / allow for emboldening / obliqueing. 62 * 63 * - In the future, we should add constructors to create fonts in font space? 64 * 65 * - FT_Load_Glyph() is exteremely costly. Do something about it? 66 */ 67 68 69struct hb_ft_font_t 70{ 71 FT_Face ft_face; 72 int load_flags; 73 bool unref; /* Whether to destroy ft_face when done. */ 74}; 75 76static hb_ft_font_t * 77_hb_ft_font_create (FT_Face ft_face, bool unref) 78{ 79 hb_ft_font_t *ft_font = (hb_ft_font_t *) calloc (1, sizeof (hb_ft_font_t)); 80 81 if (unlikely (!ft_font)) 82 return NULL; 83 84 ft_font->ft_face = ft_face; 85 ft_font->unref = unref; 86 87 ft_font->load_flags = FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING; 88 89 return ft_font; 90} 91 92static void 93_hb_ft_font_destroy (hb_ft_font_t *ft_font) 94{ 95 if (ft_font->unref) 96 FT_Done_Face (ft_font->ft_face); 97 98 free (ft_font); 99} 100 101/** 102 * hb_ft_font_set_load_flags: 103 * @font: 104 * @load_flags: 105 * 106 * 107 * 108 * Since: 1.0.5 109 **/ 110void 111hb_ft_font_set_load_flags (hb_font_t *font, int load_flags) 112{ 113 if (font->immutable) 114 return; 115 116 if (font->destroy != (hb_destroy_func_t) _hb_ft_font_destroy) 117 return; 118 119 hb_ft_font_t *ft_font = (hb_ft_font_t *) font->user_data; 120 121 ft_font->load_flags = load_flags; 122} 123 124/** 125 * hb_ft_font_get_load_flags: 126 * @font: 127 * 128 * 129 * 130 * Return value: 131 * Since: 1.0.5 132 **/ 133int 134hb_ft_font_get_load_flags (hb_font_t *font) 135{ 136 if (font->destroy != (hb_destroy_func_t) _hb_ft_font_destroy) 137 return 0; 138 139 const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font->user_data; 140 141 return ft_font->load_flags; 142} 143 144FT_Face 145hb_ft_font_get_face (hb_font_t *font) 146{ 147 if (font->destroy != (hb_destroy_func_t) _hb_ft_font_destroy) 148 return NULL; 149 150 const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font->user_data; 151 152 return ft_font->ft_face; 153} 154 155 156 157static hb_bool_t 158hb_ft_get_nominal_glyph (hb_font_t *font HB_UNUSED, 159 void *font_data, 160 hb_codepoint_t unicode, 161 hb_codepoint_t *glyph, 162 void *user_data HB_UNUSED) 163{ 164 const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; 165 unsigned int g = FT_Get_Char_Index (ft_font->ft_face, unicode); 166 167 if (unlikely (!g)) 168 return false; 169 170 *glyph = g; 171 return true; 172} 173 174static hb_bool_t 175hb_ft_get_variation_glyph (hb_font_t *font HB_UNUSED, 176 void *font_data, 177 hb_codepoint_t unicode, 178 hb_codepoint_t variation_selector, 179 hb_codepoint_t *glyph, 180 void *user_data HB_UNUSED) 181{ 182 const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; 183 unsigned int g = FT_Face_GetCharVariantIndex (ft_font->ft_face, unicode, variation_selector); 184 185 if (unlikely (!g)) 186 return false; 187 188 *glyph = g; 189 return true; 190} 191 192static hb_position_t 193hb_ft_get_glyph_h_advance (hb_font_t *font HB_UNUSED, 194 void *font_data, 195 hb_codepoint_t glyph, 196 void *user_data HB_UNUSED) 197{ 198 const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; 199 FT_Fixed v; 200 201 if (unlikely (FT_Get_Advance (ft_font->ft_face, glyph, ft_font->load_flags, &v))) 202 return 0; 203 204 if (font->x_scale < 0) 205 v = -v; 206 207 return (v + (1<<9)) >> 10; 208} 209 210static hb_position_t 211hb_ft_get_glyph_v_advance (hb_font_t *font HB_UNUSED, 212 void *font_data, 213 hb_codepoint_t glyph, 214 void *user_data HB_UNUSED) 215{ 216 const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; 217 FT_Fixed v; 218 219 if (unlikely (FT_Get_Advance (ft_font->ft_face, glyph, ft_font->load_flags | FT_LOAD_VERTICAL_LAYOUT, &v))) 220 return 0; 221 222 if (font->y_scale < 0) 223 v = -v; 224 225 /* Note: FreeType's vertical metrics grows downward while other FreeType coordinates 226 * have a Y growing upward. Hence the extra negation. */ 227 return (-v + (1<<9)) >> 10; 228} 229 230static hb_bool_t 231hb_ft_get_glyph_v_origin (hb_font_t *font HB_UNUSED, 232 void *font_data, 233 hb_codepoint_t glyph, 234 hb_position_t *x, 235 hb_position_t *y, 236 void *user_data HB_UNUSED) 237{ 238 const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; 239 FT_Face ft_face = ft_font->ft_face; 240 241 if (unlikely (FT_Load_Glyph (ft_face, glyph, ft_font->load_flags))) 242 return false; 243 244 /* Note: FreeType's vertical metrics grows downward while other FreeType coordinates 245 * have a Y growing upward. Hence the extra negation. */ 246 *x = ft_face->glyph->metrics.horiBearingX - ft_face->glyph->metrics.vertBearingX; 247 *y = ft_face->glyph->metrics.horiBearingY - (-ft_face->glyph->metrics.vertBearingY); 248 249 if (font->x_scale < 0) 250 *x = -*x; 251 if (font->y_scale < 0) 252 *y = -*y; 253 254 return true; 255} 256 257static hb_position_t 258hb_ft_get_glyph_h_kerning (hb_font_t *font, 259 void *font_data, 260 hb_codepoint_t left_glyph, 261 hb_codepoint_t right_glyph, 262 void *user_data HB_UNUSED) 263{ 264 const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; 265 FT_Vector kerningv; 266 267 FT_Kerning_Mode mode = font->x_ppem ? FT_KERNING_DEFAULT : FT_KERNING_UNFITTED; 268 if (FT_Get_Kerning (ft_font->ft_face, left_glyph, right_glyph, mode, &kerningv)) 269 return 0; 270 271 return kerningv.x; 272} 273 274static hb_bool_t 275hb_ft_get_glyph_extents (hb_font_t *font HB_UNUSED, 276 void *font_data, 277 hb_codepoint_t glyph, 278 hb_glyph_extents_t *extents, 279 void *user_data HB_UNUSED) 280{ 281 const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; 282 FT_Face ft_face = ft_font->ft_face; 283 284 if (unlikely (FT_Load_Glyph (ft_face, glyph, ft_font->load_flags))) 285 return false; 286 287 extents->x_bearing = ft_face->glyph->metrics.horiBearingX; 288 extents->y_bearing = ft_face->glyph->metrics.horiBearingY; 289 extents->width = ft_face->glyph->metrics.width; 290 extents->height = -ft_face->glyph->metrics.height; 291 if (font->x_scale < 0) 292 { 293 extents->x_bearing = -extents->x_bearing; 294 extents->width = -extents->width; 295 } 296 if (font->y_scale < 0) 297 { 298 extents->y_bearing = -extents->y_bearing; 299 extents->height = -extents->height; 300 } 301 return true; 302} 303 304static hb_bool_t 305hb_ft_get_glyph_contour_point (hb_font_t *font HB_UNUSED, 306 void *font_data, 307 hb_codepoint_t glyph, 308 unsigned int point_index, 309 hb_position_t *x, 310 hb_position_t *y, 311 void *user_data HB_UNUSED) 312{ 313 const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; 314 FT_Face ft_face = ft_font->ft_face; 315 316 if (unlikely (FT_Load_Glyph (ft_face, glyph, ft_font->load_flags))) 317 return false; 318 319 if (unlikely (ft_face->glyph->format != FT_GLYPH_FORMAT_OUTLINE)) 320 return false; 321 322 if (unlikely (point_index >= (unsigned int) ft_face->glyph->outline.n_points)) 323 return false; 324 325 *x = ft_face->glyph->outline.points[point_index].x; 326 *y = ft_face->glyph->outline.points[point_index].y; 327 328 return true; 329} 330 331static hb_bool_t 332hb_ft_get_glyph_name (hb_font_t *font HB_UNUSED, 333 void *font_data, 334 hb_codepoint_t glyph, 335 char *name, unsigned int size, 336 void *user_data HB_UNUSED) 337{ 338 const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; 339 340 hb_bool_t ret = !FT_Get_Glyph_Name (ft_font->ft_face, glyph, name, size); 341 if (ret && (size && !*name)) 342 ret = false; 343 344 return ret; 345} 346 347static hb_bool_t 348hb_ft_get_glyph_from_name (hb_font_t *font HB_UNUSED, 349 void *font_data, 350 const char *name, int len, /* -1 means nul-terminated */ 351 hb_codepoint_t *glyph, 352 void *user_data HB_UNUSED) 353{ 354 const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; 355 FT_Face ft_face = ft_font->ft_face; 356 357 if (len < 0) 358 *glyph = FT_Get_Name_Index (ft_face, (FT_String *) name); 359 else { 360 /* Make a nul-terminated version. */ 361 char buf[128]; 362 len = MIN (len, (int) sizeof (buf) - 1); 363 strncpy (buf, name, len); 364 buf[len] = '\0'; 365 *glyph = FT_Get_Name_Index (ft_face, buf); 366 } 367 368 if (*glyph == 0) 369 { 370 /* Check whether the given name was actually the name of glyph 0. */ 371 char buf[128]; 372 if (!FT_Get_Glyph_Name(ft_face, 0, buf, sizeof (buf)) && 373 len < 0 ? !strcmp (buf, name) : !strncmp (buf, name, len)) 374 return true; 375 } 376 377 return *glyph != 0; 378} 379 380static hb_bool_t 381hb_ft_get_font_h_extents (hb_font_t *font HB_UNUSED, 382 void *font_data, 383 hb_font_extents_t *metrics, 384 void *user_data HB_UNUSED) 385{ 386 const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data; 387 FT_Face ft_face = ft_font->ft_face; 388 metrics->ascender = ft_face->size->metrics.ascender; 389 metrics->descender = ft_face->size->metrics.descender; 390 metrics->line_gap = ft_face->size->metrics.height - (ft_face->size->metrics.ascender - ft_face->size->metrics.descender); 391 if (font->y_scale < 0) 392 { 393 metrics->ascender = -metrics->ascender; 394 metrics->descender = -metrics->descender; 395 metrics->line_gap = -metrics->line_gap; 396 } 397 return true; 398} 399 400static hb_font_funcs_t *static_ft_funcs = NULL; 401 402#ifdef HB_USE_ATEXIT 403static 404void free_static_ft_funcs (void) 405{ 406 hb_font_funcs_destroy (static_ft_funcs); 407} 408#endif 409 410static void 411_hb_ft_font_set_funcs (hb_font_t *font, FT_Face ft_face, bool unref) 412{ 413retry: 414 hb_font_funcs_t *funcs = (hb_font_funcs_t *) hb_atomic_ptr_get (&static_ft_funcs); 415 416 if (unlikely (!funcs)) 417 { 418 funcs = hb_font_funcs_create (); 419 420 hb_font_funcs_set_font_h_extents_func (funcs, hb_ft_get_font_h_extents, NULL, NULL); 421 //hb_font_funcs_set_font_v_extents_func (funcs, hb_ft_get_font_v_extents, NULL, NULL); 422 hb_font_funcs_set_nominal_glyph_func (funcs, hb_ft_get_nominal_glyph, NULL, NULL); 423 hb_font_funcs_set_variation_glyph_func (funcs, hb_ft_get_variation_glyph, NULL, NULL); 424 hb_font_funcs_set_glyph_h_advance_func (funcs, hb_ft_get_glyph_h_advance, NULL, NULL); 425 hb_font_funcs_set_glyph_v_advance_func (funcs, hb_ft_get_glyph_v_advance, NULL, NULL); 426 //hb_font_funcs_set_glyph_h_origin_func (funcs, hb_ft_get_glyph_h_origin, NULL, NULL); 427 hb_font_funcs_set_glyph_v_origin_func (funcs, hb_ft_get_glyph_v_origin, NULL, NULL); 428 hb_font_funcs_set_glyph_h_kerning_func (funcs, hb_ft_get_glyph_h_kerning, NULL, NULL); 429 //hb_font_funcs_set_glyph_v_kerning_func (funcs, hb_ft_get_glyph_v_kerning, NULL, NULL); 430 hb_font_funcs_set_glyph_extents_func (funcs, hb_ft_get_glyph_extents, NULL, NULL); 431 hb_font_funcs_set_glyph_contour_point_func (funcs, hb_ft_get_glyph_contour_point, NULL, NULL); 432 hb_font_funcs_set_glyph_name_func (funcs, hb_ft_get_glyph_name, NULL, NULL); 433 hb_font_funcs_set_glyph_from_name_func (funcs, hb_ft_get_glyph_from_name, NULL, NULL); 434 435 hb_font_funcs_make_immutable (funcs); 436 437 if (!hb_atomic_ptr_cmpexch (&static_ft_funcs, NULL, funcs)) { 438 hb_font_funcs_destroy (funcs); 439 goto retry; 440 } 441 442#ifdef HB_USE_ATEXIT 443 atexit (free_static_ft_funcs); /* First person registers atexit() callback. */ 444#endif 445 }; 446 447 hb_font_set_funcs (font, 448 funcs, 449 _hb_ft_font_create (ft_face, unref), 450 (hb_destroy_func_t) _hb_ft_font_destroy); 451} 452 453 454static hb_blob_t * 455reference_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data) 456{ 457 FT_Face ft_face = (FT_Face) user_data; 458 FT_Byte *buffer; 459 FT_ULong length = 0; 460 FT_Error error; 461 462 /* Note: FreeType like HarfBuzz uses the NONE tag for fetching the entire blob */ 463 464 error = FT_Load_Sfnt_Table (ft_face, tag, 0, NULL, &length); 465 if (error) 466 return NULL; 467 468 buffer = (FT_Byte *) malloc (length); 469 if (buffer == NULL) 470 return NULL; 471 472 error = FT_Load_Sfnt_Table (ft_face, tag, 0, buffer, &length); 473 if (error) 474 return NULL; 475 476 return hb_blob_create ((const char *) buffer, length, 477 HB_MEMORY_MODE_WRITABLE, 478 buffer, free); 479} 480 481/** 482 * hb_ft_face_create: 483 * @ft_face: (destroy destroy) (scope notified): 484 * @destroy: 485 * 486 * 487 * 488 * Return value: (transfer full): 489 * Since: 0.9.2 490 **/ 491hb_face_t * 492hb_ft_face_create (FT_Face ft_face, 493 hb_destroy_func_t destroy) 494{ 495 hb_face_t *face; 496 497 if (ft_face->stream->read == NULL) { 498 hb_blob_t *blob; 499 500 blob = hb_blob_create ((const char *) ft_face->stream->base, 501 (unsigned int) ft_face->stream->size, 502 HB_MEMORY_MODE_READONLY, 503 ft_face, destroy); 504 face = hb_face_create (blob, ft_face->face_index); 505 hb_blob_destroy (blob); 506 } else { 507 face = hb_face_create_for_tables (reference_table, ft_face, destroy); 508 } 509 510 hb_face_set_index (face, ft_face->face_index); 511 hb_face_set_upem (face, ft_face->units_per_EM); 512 513 return face; 514} 515 516/** 517 * hb_ft_face_create_referenced: 518 * @ft_face: 519 * 520 * 521 * 522 * Return value: (transfer full): 523 * Since: 0.9.38 524 **/ 525hb_face_t * 526hb_ft_face_create_referenced (FT_Face ft_face) 527{ 528 FT_Reference_Face (ft_face); 529 return hb_ft_face_create (ft_face, (hb_destroy_func_t) FT_Done_Face); 530} 531 532static void 533hb_ft_face_finalize (FT_Face ft_face) 534{ 535 hb_face_destroy ((hb_face_t *) ft_face->generic.data); 536} 537 538/** 539 * hb_ft_face_create_cached: 540 * @ft_face: 541 * 542 * 543 * 544 * Return value: (transfer full): 545 * Since: 0.9.2 546 **/ 547hb_face_t * 548hb_ft_face_create_cached (FT_Face ft_face) 549{ 550 if (unlikely (!ft_face->generic.data || ft_face->generic.finalizer != (FT_Generic_Finalizer) hb_ft_face_finalize)) 551 { 552 if (ft_face->generic.finalizer) 553 ft_face->generic.finalizer (ft_face); 554 555 ft_face->generic.data = hb_ft_face_create (ft_face, NULL); 556 ft_face->generic.finalizer = (FT_Generic_Finalizer) hb_ft_face_finalize; 557 } 558 559 return hb_face_reference ((hb_face_t *) ft_face->generic.data); 560} 561 562 563/** 564 * hb_ft_font_create: 565 * @ft_face: (destroy destroy) (scope notified): 566 * @destroy: 567 * 568 * 569 * 570 * Return value: (transfer full): 571 * Since: 0.9.2 572 **/ 573hb_font_t * 574hb_ft_font_create (FT_Face ft_face, 575 hb_destroy_func_t destroy) 576{ 577 hb_font_t *font; 578 hb_face_t *face; 579 580 face = hb_ft_face_create (ft_face, destroy); 581 font = hb_font_create (face); 582 hb_face_destroy (face); 583 _hb_ft_font_set_funcs (font, ft_face, false); 584 hb_font_set_scale (font, 585 (int) (((uint64_t) ft_face->size->metrics.x_scale * (uint64_t) ft_face->units_per_EM + (1<<15)) >> 16), 586 (int) (((uint64_t) ft_face->size->metrics.y_scale * (uint64_t) ft_face->units_per_EM + (1<<15)) >> 16)); 587#if 0 /* hb-ft works in no-hinting model */ 588 hb_font_set_ppem (font, 589 ft_face->size->metrics.x_ppem, 590 ft_face->size->metrics.y_ppem); 591#endif 592 593 return font; 594} 595 596/** 597 * hb_ft_font_create_referenced: 598 * @ft_face: 599 * 600 * 601 * 602 * Return value: (transfer full): 603 * Since: 0.9.38 604 **/ 605hb_font_t * 606hb_ft_font_create_referenced (FT_Face ft_face) 607{ 608 FT_Reference_Face (ft_face); 609 return hb_ft_font_create (ft_face, (hb_destroy_func_t) FT_Done_Face); 610} 611 612 613/* Thread-safe, lock-free, FT_Library */ 614 615static FT_Library ft_library; 616 617#ifdef HB_USE_ATEXIT 618static 619void free_ft_library (void) 620{ 621 FT_Done_FreeType (ft_library); 622} 623#endif 624 625static FT_Library 626get_ft_library (void) 627{ 628retry: 629 FT_Library library = (FT_Library) hb_atomic_ptr_get (&ft_library); 630 631 if (unlikely (!library)) 632 { 633 /* Not found; allocate one. */ 634 if (FT_Init_FreeType (&library)) 635 return NULL; 636 637 if (!hb_atomic_ptr_cmpexch (&ft_library, NULL, library)) { 638 FT_Done_FreeType (library); 639 goto retry; 640 } 641 642#ifdef HB_USE_ATEXIT 643 atexit (free_ft_library); /* First person registers atexit() callback. */ 644#endif 645 } 646 647 return library; 648} 649 650static void 651_release_blob (FT_Face ft_face) 652{ 653 hb_blob_destroy ((hb_blob_t *) ft_face->generic.data); 654} 655 656void 657hb_ft_font_set_funcs (hb_font_t *font) 658{ 659 hb_blob_t *blob = hb_face_reference_blob (font->face); 660 unsigned int blob_length; 661 const char *blob_data = hb_blob_get_data (blob, &blob_length); 662 if (unlikely (!blob_length)) 663 DEBUG_MSG (FT, font, "Font face has empty blob"); 664 665 FT_Face ft_face = NULL; 666 FT_Error err = FT_New_Memory_Face (get_ft_library (), 667 (const FT_Byte *) blob_data, 668 blob_length, 669 hb_face_get_index (font->face), 670 &ft_face); 671 672 if (unlikely (err)) { 673 hb_blob_destroy (blob); 674 DEBUG_MSG (FT, font, "Font face FT_New_Memory_Face() failed"); 675 return; 676 } 677 678 FT_Select_Charmap (ft_face, FT_ENCODING_UNICODE); 679 680 FT_Set_Char_Size (ft_face, 681 abs (font->x_scale), abs (font->y_scale), 682 0, 0); 683#if 0 684 font->x_ppem * 72 * 64 / font->x_scale, 685 font->y_ppem * 72 * 64 / font->y_scale); 686#endif 687 if (font->x_scale < 0 || font->y_scale < 0) 688 { 689 FT_Matrix matrix = { font->x_scale < 0 ? -1 : +1, 0, 690 0, font->y_scale < 0 ? -1 : +1}; 691 FT_Set_Transform (ft_face, &matrix, NULL); 692 } 693 694 ft_face->generic.data = blob; 695 ft_face->generic.finalizer = (FT_Generic_Finalizer) _release_blob; 696 697 _hb_ft_font_set_funcs (font, ft_face, true); 698 hb_ft_font_set_load_flags (font, FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING); 699} 700