1 Overview of changes leading to 0.9.17 2 Monday, May 20, 2013 3 ===================================== 4 5 - Build fixes. 6 - Fix bug in hb_set_get_min(). 7 - Fix regression with Arabic mark positioning / width-zeroing. 8 9 Overview of changes leading to 0.9.16 10 Friday, April 19, 2013 11 ===================================== 12 13 - Major speedup in OpenType lookup processing. With the Amiri 14 Arabic font, this release is over 3x faster than previous 15 release. All scripts / languages should see this speedup. 16 17 - New --num-iterations option for hb-shape / hb-view; useful for 18 profiling. 19 20 Overview of changes leading to 0.9.15 21 Friday, April 05, 2013 22 ===================================== 23 24 - Build fixes. 25 - Fix crasher in graphite2 shaper. 26 - Fix Arabic mark width zeroing regression. 27 - Don't compose Hangul jamo into Unicode syllables. 28 29 30 Overview of changes leading to 0.9.14 31 Thursday, March 21, 2013 32 ===================================== 33 34 - Build fixes. 35 - Fix time-consuming sanitize with malicious fonts. 36 - Implement hb_buffer_deserialize_glyphs() for both json and text. 37 - Do not ignore Hangul filler characters. 38 - Indic fixes: 39 * Fix Malayalam pre-base reordering interaction with post-forms. 40 * Further adjust ZWJ handling. Should fix known regressions from 41 0.9.13. 42 43 44 Overview of changes leading to 0.9.13 45 Thursday, February 25, 2013 46 ===================================== 47 48 - Build fixes. 49 - Ngapi HarfBuzz Hackfest in London (February 2013): 50 * Fixed all known Indic bugs, 51 * New Win8-style Myanmar shaper, 52 * New South-East Asian shaper for Tai Tham, Cham, and New Tai Lue, 53 * Smartly ignore Default_Ignorable characters (joiners, etc) wheb 54 matching GSUB/GPOS lookups, 55 * Fix 'Phags-Pa U+A872 shaping, 56 * Fix partial disabling of default-on features, 57 * Allow disabling of TrueType kerning. 58 - Fix possible crasher with broken fonts with overlapping tables. 59 - Removed generated files from git again. So, one needs ragel to 60 bootstrap from the git tree. 61 62 API changes: 63 - hb_shape() and related APIs now abort if buffer direction is 64 HB_DIRECTION_INVALID. Previously, hb_shape() was calling 65 hb_buffer_guess_segment_properties() on the buffer before 66 shaping. The heuristics in that function are fragile. If the 67 user really wants the old behvaior, they can call that function 68 right before calling hb_shape() to get the old behavior. 69 - hb_blob_create_sub_blob() always creates sub-blob with 70 HB_MEMORY_MODE_READONLY. See comments for the reason. 71 72 73 Overview of changes leading to 0.9.12 74 Thursday, January 18, 2013 75 ===================================== 76 77 - Build fixes for Sun compiler. 78 - Minor bug fix. 79 80 Overview of changes leading to 0.9.11 81 Thursday, January 10, 2013 82 ===================================== 83 84 - Build fixes. 85 - Fix GPOS mark attachment with null Anchor offsets. 86 - [Indic] Fix old-spec reordering of viramas if sequence ends in one. 87 - Fix multi-threaded shaper data creation crash. 88 - Add atomic ops for Solaris. 89 90 API changes: 91 - Rename hb_buffer_clear() to hb_buffer_clear_contents(). 92 93 94 Overview of changes leading to 0.9.10 95 Thursday, January 3, 2013 96 ===================================== 97 98 - [Indic] Fixed rendering of Malayalam dot-reph 99 - Updated OT language tags. 100 - Updated graphite2 backend. 101 - Improved hb_ot_layout_get_size_params() logic. 102 - Improve hb-shape/hb-view help output. 103 - Fixed hb-set.h implementation to not crash. 104 - Fixed various issues with hb_ot_layout_collect_lookups(). 105 - Various build fixes. 106 107 New API: 108 109 hb_graphite2_face_get_gr_face() 110 hb_graphite2_font_get_gr_font() 111 hb_coretext_face_get_cg_font() 112 113 Modified API: 114 115 hb_ot_layout_get_size_params() 116 117 118 Overview of changes leading to 0.9.9 119 Wednesday, December 5, 2012 120 ==================================== 121 122 - Fix build on Windows. 123 - Minor improvements. 124 125 126 Overview of changes leading to 0.9.8 127 Tuesday, December 4, 2012 128 ==================================== 129 130 131 - Actually implement hb_shape_plan_get_shaper (). 132 - Make UCDB data tables const. 133 - Lots of internal refactoring in OTLayout tables. 134 - Flesh out hb_ot_layout_lookup_collect_glyphs(). 135 136 New API: 137 138 hb_ot_layout_collect_lookups() 139 hb_ot_layout_get_size_params() 140 141 142 Overview of changes leading to 0.9.7 143 Sunday, November 21, 2012 144 ==================================== 145 146 147 HarfBuzz "All-You-Can-Eat-Sushi" (aka Vancouver) Hackfest and follow-on fixes. 148 149 - Fix Arabic contextual joining using pre-context text. 150 - Fix Sinhala "split matra" mess. 151 - Fix Khmer shaping with broken fonts. 152 - Implement Thai "PUA" shaping for old fonts. 153 - Do NOT route Kharoshthi script through the Indic shaper. 154 - Disable fallback positioning for Indic and Thai shapers. 155 - Misc fixes. 156 157 158 hb-shape / hb-view changes: 159 160 - Add --text-before and --text-after 161 - Add --bot / --eot / --preserve-default-ignorables 162 - hb-shape --output-format=json 163 164 165 New API: 166 167 hb_buffer_clear() 168 169 hb_buffer_flags_t 170 171 HB_BUFFER_FLAGS_DEFAULT 172 HB_BUFFER_FLAG_BOT 173 HB_BUFFER_FLAG_EOT 174 HB_BUFFER_FLAG_PRESERVE_DEFAULT_IGNORABLES 175 176 hb_buffer_set_flags() 177 hb_buffer_get_flags() 178 179 HB_BUFFER_SERIALIZE_FLAGS 180 hb_buffer_serialize_glyphs() 181 hb_buffer_deserialize_glyphs() 182 hb_buffer_serialize_list_formats() 183 184 hb_set_add_range() 185 hb_set_del_range() 186 hb_set_get_population() 187 hb_set_next_range() 188 189 hb_face_[sg]et_glyph_count() 190 191 hb_segment_properties_t 192 HB_SEGMENT_PROPERTIES_DEFAULT 193 hb_segment_properties_equal() 194 hb_segment_properties_hash() 195 196 hb_buffer_set_segment_properties() 197 hb_buffer_get_segment_properties() 198 199 hb_ot_layout_glyph_class_t 200 hb_ot_layout_get_glyph_class() 201 hb_ot_layout_get_glyphs_in_class() 202 203 hb_shape_plan_t 204 hb_shape_plan_create() 205 hb_shape_plan_create_cached() 206 hb_shape_plan_get_empty() 207 hb_shape_plan_reference() 208 hb_shape_plan_destroy() 209 hb_shape_plan_set_user_data() 210 hb_shape_plan_get_user_data() 211 hb_shape_plan_execute() 212 hb_shape_plan_get_shaper() 213 214 hb_ot_shape_plan_collect_lookups() 215 216 217 API changes: 218 219 - Remove "mask" parameter from hb_buffer_add(). 220 - Rename hb_ot_layout_would_substitute_lookup() and hb_ot_layout_substitute_closure_lookup(). 221 - hb-set.h API const correction. 222 - Renamed hb_set_min/max() to hb_set_get_min/max(). 223 - Rename hb_ot_layout_feature_get_lookup_indexes() to hb_ot_layout_feature_get_lookups(). 224 - Rename hb_buffer_guess_properties() to hb_buffer_guess_segment_properties(). 225 226 227 228 Overview of changes leading to 0.9.6 229 Sunday, November 13, 2012 230 ==================================== 231 232 - Don't clear pre-context text if no new context is provided. 233 - Fix ReverseChainingSubstLookup, which was totally borked. 234 - Adjust output format of hb-shape a bit. 235 - Include config.h.in in-tree. Makes it easier for alternate build systems. 236 - Fix hb_buffer_set_length(buffer, 0) invalid memory allocation. 237 - Use ICU LayoutEngine's C API instead of C++. Avoids much headache. 238 - Drop glyphs for all of Unicode Default_Ignorable characters. 239 - Misc build fixes. 240 241 Arabic shaper: 242 - Enable 'dlig' and 'mset' features in Arabic shaper. 243 - Implement 'Phags-pa shaping, improve Mongolian. 244 245 Indic shaper: 246 - Decompose Sinhala split matras the way old HarfBuzz / Pango did. 247 - Initial support for Consonant Medials. 248 - Start adding new-style Myanmar shaping. 249 - Make reph and 'pref' logic introspect the font. 250 - Route Meetei-Mayek through the Indic shaper. 251 - Don't apply 'liga' in Indic shaper. 252 - Improve Malayalam pre-base reordering Ra interaction with Chillus. 253 254 255 256 Overview of changes leading to 0.9.5 257 Sunday, October 14, 2012 258 ==================================== 259 260 - Synthetic-GSUB Arabic fallback shaping. 261 262 - Misc Indic improvements. 263 264 - Add build system support for pthread. 265 266 - Imported UCDN for in-tree Unicode callbacks implementation. 267 268 - Context-aware Arabic joining. 269 270 - Misc other fixes. 271 272 - New API: 273 274 hb_feature_to/from-string() 275 hb_buffer_[sg]et_content_type() 276 277 278 279 Overview of changes leading to 0.9.4 280 Tuesday, Sep 03, 2012 281 ==================================== 282 283 - Indic improvements with old-spec Malayalam. 284 285 - Better fallback glyph positioning, specially with Thai / Lao marks. 286 287 - Implement dotted-circle insertion. 288 289 - Better Arabic fallback shaping / ligation. 290 291 - Added ICU LayoutEngine backend for testing. Call it by the 'icu_le' name. 292 293 - Misc fixes. 294 295 296 297 Overview of changes leading to 0.9.3 298 Friday, Aug 18, 2012 299 ==================================== 300 301 - Fixed fallback mark positioning for left-to-right text. 302 303 - Improve mark positioning for the remaining combining classes. 304 305 - Unbreak Thai and fallback Arabic shaping. 306 307 - Port Arabic shaper to shape-plan caching. 308 309 - Use new ICU normalizer functions. 310 311 312 313 Overview of changes leading to 0.9.2 314 Friday, Aug 10, 2012 315 ==================================== 316 317 - Over a thousand commits! This is the first major release of HarfBuzz. 318 319 - HarfBuzz is feature-complete now! It should be in par, or better, than 320 both Pango's shapers and old HarfBuzz / Qt shapers. 321 322 - New Indic shaper, supporting main Indic scripts, Sinhala, and Khmer. 323 324 - Improved Arabic shaper, with fallback Arabic shaping, supporting Arabic, 325 Sinhala, N'ko, Mongolian, and Mandaic. 326 327 - New Thai / Lao shaper. 328 329 - Tibetan / Hangul support in the generic shaper. 330 331 - Synthetic GDEF support for fonts without a GDEF table. 332 333 - Fallback mark positioning for fonts without a GPOS table. 334 335 - Unicode normalization shaping heuristic during glyph mapping. 336 337 - New experimental Graphite2 backend. 338 339 - New Uniscribe backend (primarily for testing). 340 341 - New CoreText backend (primarily for testing). 342 343 - Major optimization and speedup. 344 345 - Test suites and testing infrastructure (work in progress). 346 347 - Greatly improved hb-view cmdline tool. 348 349 - hb-shape cmdline tool. 350 351 - Unicode 6.1 support. 352 353 Summary of API changes: 354 355 o Changed API: 356 357 - Users are expected to only include main header files now (ie. hb.h, 358 hb-glib.h, hb-ft.h, ...) 359 360 - All struct tag names had their initial underscore removed. 361 Ie. "struct _hb_buffer_t" is "struct hb_buffer_t" now. 362 363 - All set_user_data() functions now take a "replace" boolean parameter. 364 365 - hb_buffer_create() takes zero arguments now. 366 Use hb_buffer_pre_allocate() to pre-allocate. 367 368 - hb_buffer_add_utf*() now accept -1 for length parameteres, 369 meaning "nul-terminated". 370 371 - hb_direction_t enum values changed. 372 373 - All *_from_string() APIs now take a length parameter to allow for 374 non-nul-terminated strings. A -1 length means "nul-terminated". 375 376 - Typedef for hb_language_t changed. 377 378 - hb_get_table_func_t renamed to hb_reference_table_func_t. 379 380 - hb_ot_layout_table_choose_script() 381 382 - Various renames in hb-unicode.h. 383 384 o New API: 385 386 - hb_buffer_guess_properties() 387 Automatically called by hb_shape(). 388 389 - hb_buffer_normalize_glyphs() 390 391 - hb_tag_from_string() 392 393 - hb-coretext.h 394 395 - hb-uniscribe.h 396 397 - hb_face_reference_blob() 398 - hb_face_[sg]et_index() 399 - hb_face_set_upem() 400 401 - hb_font_get_glyph_name_func_t 402 hb_font_get_glyph_from_name_func_t 403 hb_font_funcs_set_glyph_name_func() 404 hb_font_funcs_set_glyph_from_name_func() 405 hb_font_get_glyph_name() 406 hb_font_get_glyph_from_name() 407 hb_font_glyph_to_string() 408 hb_font_glyph_from_string() 409 410 - hb_font_set_funcs_data() 411 412 - hb_ft_font_set_funcs() 413 - hb_ft_font_get_face() 414 415 - hb-gobject.h (work in progress) 416 417 - hb_ot_shape_glyphs_closure() 418 hb_ot_layout_substitute_closure_lookup() 419 420 - hb-set.h 421 422 - hb_shape_full() 423 424 - hb_unicode_combining_class_t 425 426 - hb_unicode_compose_func_t 427 hb_unicode_decompose_func_t 428 hb_unicode_decompose_compatibility_func_t 429 hb_unicode_funcs_set_compose_func() 430 hb_unicode_funcs_set_decompose_func() 431 hb_unicode_funcs_set_decompose_compatibility_func() 432 hb_unicode_compose() 433 hb_unicode_decompose() 434 hb_unicode_decompose_compatibility() 435 436 o Removed API: 437 438 - hb_ft_get_font_funcs() 439 440 - hb_ot_layout_substitute_start() 441 hb_ot_layout_substitute_lookup() 442 hb_ot_layout_substitute_finish() 443 hb_ot_layout_position_start() 444 hb_ot_layout_position_lookup() 445 hb_ot_layout_position_finish() 446 447 448 449 Overview of changes leading to 0.6.0 450 Friday, May 27, 2011 451 ==================================== 452 453 - Vertical text support in GPOS 454 - Almost all API entries have unit tests now, under test/ 455 - All thread-safety issues are fixed 456 457 Summary of API changes follows. 458 459 460 * Simple Types API: 461 462 o New API: 463 HB_LANGUAGE_INVALID 464 hb_language_get_default() 465 hb_direction_to_string() 466 hb_direction_from_string() 467 hb_script_get_horizontal_direction() 468 HB_UNTAG() 469 470 o Renamed API: 471 hb_category_t renamed to hb_unicode_general_category_t 472 473 o Changed API: 474 hb_language_t is a typed pointers now 475 476 o Removed API: 477 HB_TAG_STR() 478 479 480 * Use ISO 15924 tags for hb_script_t: 481 482 o New API: 483 hb_script_from_iso15924_tag() 484 hb_script_to_iso15924_tag() 485 hb_script_from_string() 486 487 o Changed API: 488 HB_SCRIPT_* enum members changed value. 489 490 491 * Buffer API streamlined: 492 493 o New API: 494 hb_buffer_reset() 495 hb_buffer_set_length() 496 hb_buffer_allocation_successful() 497 498 o Renamed API: 499 hb_buffer_ensure() renamed to hb_buffer_pre_allocate() 500 hb_buffer_add_glyph() renamed to hb_buffer_add() 501 502 o Removed API: 503 hb_buffer_clear() 504 hb_buffer_clear_positions() 505 506 o Changed API: 507 hb_buffer_get_glyph_infos() takes an out length parameter now 508 hb_buffer_get_glyph_positions() takes an out length parameter now 509 510 511 * Blob API streamlined: 512 513 o New API: 514 hb_blob_get_data() 515 hb_blob_get_data_writable() 516 517 o Renamed API: 518 hb_blob_create_empty() renamed to hb_blob_get_empty() 519 520 o Removed API: 521 hb_blob_lock() 522 hb_blob_unlock() 523 hb_blob_is_writable() 524 hb_blob_try_writable() 525 526 o Changed API: 527 hb_blob_create() takes user_data before destroy now 528 529 530 * Unicode functions API: 531 532 o Unicode function vectors can subclass other unicode function vectors now. 533 Unimplemented callbacks in the subclass automatically chainup to the parent. 534 535 o All hb_unicode_funcs_t callbacks take a user_data now. Their setters 536 take a user_data and its respective destroy callback. 537 538 o New API: 539 hb_unicode_funcs_get_empty() 540 hb_unicode_funcs_get_default() 541 hb_unicode_funcs_get_parent() 542 543 o Changed API: 544 hb_unicode_funcs_create() now takes a parent_funcs. 545 546 o Removed func getter functions: 547 hb_unicode_funcs_get_mirroring_func() 548 hb_unicode_funcs_get_general_category_func() 549 hb_unicode_funcs_get_script_func() 550 hb_unicode_funcs_get_combining_class_func() 551 hb_unicode_funcs_get_eastasian_width_func() 552 553 554 * Face API: 555 556 o Renamed API: 557 hb_face_get_table() renamed to hb_face_reference_table() 558 hb_face_create_for_data() renamed to hb_face_create() 559 560 o Changed API: 561 hb_face_create_for_tables() takes user_data before destroy now 562 hb_face_reference_table() returns empty blob instead of NULL 563 hb_get_table_func_t accepts the face as first parameter now 564 565 * Font API: 566 567 o Fonts can subclass other fonts now. Unimplemented callbacks in the 568 subclass automatically chainup to the parent. When chaining up, 569 scale is adjusted if the parent font has a different scale. 570 571 o All hb_font_funcs_t callbacks take a user_data now. Their setters 572 take a user_data and its respective destroy callback. 573 574 o New API: 575 hb_font_get_parent() 576 hb_font_funcs_get_empty() 577 hb_font_create_sub_font() 578 579 o Removed API: 580 hb_font_funcs_copy() 581 hb_font_unset_funcs() 582 583 o Removed func getter functions: 584 hb_font_funcs_get_glyph_func() 585 hb_font_funcs_get_glyph_advance_func() 586 hb_font_funcs_get_glyph_extents_func() 587 hb_font_funcs_get_contour_point_func() 588 hb_font_funcs_get_kerning_func() 589 590 o Changed API: 591 hb_font_create() takes a face and references it now 592 hb_font_set_funcs() takes user_data before destroy now 593 hb_font_set_scale() accepts signed integers now 594 hb_font_get_contour_point_func_t now takes glyph first, then point_index 595 hb_font_get_glyph_func_t returns a success boolean now 596 597 598 * Changed object model: 599 600 o All object types have a _get_empty() now: 601 hb_blob_get_empty() 602 hb_buffer_get_empty() 603 hb_face_get_empty() 604 hb_font_get_empty() 605 hb_font_funcs_get_empty() 606 hb_unicode_funcs_get_empty() 607 608 o Added _set_user_data() and _get_user_data() for all object types: 609 hb_blob_get_user_data() 610 hb_blob_set_user_data() 611 hb_buffer_get_user_data() 612 hb_buffer_set_user_data() 613 hb_face_get_user_data() 614 hb_face_set_user_data() 615 hb_font_funcs_get_user_data() 616 hb_font_funcs_set_user_data() 617 hb_font_get_user_data() 618 hb_font_set_user_data() 619 hb_unicode_funcs_get_user_data() 620 hb_unicode_funcs_set_user_data() 621 622 o Removed the _get_reference_count() from all object types: 623 hb_blob_get_reference_count() 624 hb_buffer_get_reference_count() 625 hb_face_get_reference_count() 626 hb_font_funcs_get_reference_count() 627 hb_font_get_reference_count() 628 hb_unicode_funcs_get_reference_count() 629 630 o Added _make_immutable() and _is_immutable() for all object types except for buffer: 631 hb_blob_make_immutable() 632 hb_blob_is_immutable() 633 hb_face_make_immutable() 634 hb_face_is_immutable() 635 636 637 * Changed API for vertical text support 638 639 o The following callbacks where removed: 640 hb_font_get_glyph_advance_func_t 641 hb_font_get_kerning_func_t 642 643 o The following new callbacks added instead: 644 hb_font_get_glyph_h_advance_func_t 645 hb_font_get_glyph_v_advance_func_t 646 hb_font_get_glyph_h_origin_func_t 647 hb_font_get_glyph_v_origin_func_t 648 hb_font_get_glyph_h_kerning_func_t 649 hb_font_get_glyph_v_kerning_func_t 650 651 o The following API removed as such: 652 hb_font_funcs_set_glyph_advance_func() 653 hb_font_funcs_set_kerning_func() 654 hb_font_get_glyph_advance() 655 hb_font_get_kerning() 656 657 o New API added instead: 658 hb_font_funcs_set_glyph_h_advance_func() 659 hb_font_funcs_set_glyph_v_advance_func() 660 hb_font_funcs_set_glyph_h_origin_func() 661 hb_font_funcs_set_glyph_v_origin_func() 662 hb_font_funcs_set_glyph_h_kerning_func() 663 hb_font_funcs_set_glyph_v_kerning_func() 664 hb_font_get_glyph_h_advance() 665 hb_font_get_glyph_v_advance() 666 hb_font_get_glyph_h_origin() 667 hb_font_get_glyph_v_origin() 668 hb_font_get_glyph_h_kerning() 669 hb_font_get_glyph_v_kerning() 670 671 o The following higher-leve API added for convenience: 672 hb_font_get_glyph_advance_for_direction() 673 hb_font_get_glyph_origin_for_direction() 674 hb_font_add_glyph_origin_for_direction() 675 hb_font_subtract_glyph_origin_for_direction() 676 hb_font_get_glyph_kerning_for_direction() 677 hb_font_get_glyph_extents_for_origin() 678 hb_font_get_glyph_contour_point_for_origin() 679 680 681 * OpenType Layout API: 682 683 o New API: 684 hb_ot_layout_position_start() 685 hb_ot_layout_substitute_start() 686 hb_ot_layout_substitute_finish() 687 688 689 * Glue code: 690 691 o New API: 692 hb_glib_script_to_script() 693 hb_glib_script_from_script() 694 hb_icu_script_to_script() 695 hb_icu_script_from_script() 696 697 698 * Version API added: 699 700 o New API: 701 HB_VERSION_MAJOR 702 HB_VERSION_MINOR 703 HB_VERSION_MICRO 704 HB_VERSION_STRING 705 HB_VERSION_CHECK() 706 hb_version() 707 hb_version_string() 708 hb_version_check() 709 710 711
