1 Overview of changes leading to 0.9.35 2 Saturday, August 13, 2014 3 ===================================== 4 5 - Fix major shape-plan caching bug when more than one shaper were 6 provided to hb_shape_full() (as exercised by XeTeX). 7 http://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1246370.html 8 - Fix Arabic fallback shaping regression. This was broken in 0.9.32. 9 - Major hb-coretext fixes. That backend is complete now, including 10 respecing buffer direction and language, down to vertical writing. 11 - Build fixes for Windows CE. Should build fine now. 12 - Misc fixes: 13 Use atexit() only if it's safe to call from shared library 14 https://bugs.freedesktop.org/show_bug.cgi?id=82246 15 Mandaic had errors in its Unicode Joining_Type 16 https://bugs.freedesktop.org/show_bug.cgi?id=82306 17 - API changes: 18 19 * hb_buffer_clear_contents() does not reset buffer flags now. 20 21 After 763e5466c0a03a7c27020e1e2598e488612529a7, one doesn't 22 need to set flags for different pieces of text. The flags now 23 are something the client sets up once, depending on how it 24 actually uses the buffer. As such, don't clear it in 25 clear_contents(). 26 27 I don't expect any changes to be needed to any existing client. 28 29 30 Overview of changes leading to 0.9.34 31 Saturday, August 2, 2014 32 ===================================== 33 34 - hb_feature_from_string() now accepts CSS font-feature-settings format. 35 - As a result, hb-shape / hb-view --features also accept CSS-style strings. 36 Eg, "'liga' off" is accepted now. 37 - Add old-spec Myanmar shaper: 38 https://bugs.freedesktop.org/show_bug.cgi?id=81775 39 - Don't apply 'calt' in Hangul shaper. 40 - Fix mark advance zeroing for Hebrew shaper: 41 https://bugs.freedesktop.org/show_bug.cgi?id=76767 42 - Implement Windows-1256 custom Arabic shaping. Only built on Windows, 43 and requires help from get_glyph(). Used by Firefox. 44 https://bugzilla.mozilla.org/show_bug.cgi?id=1045139 45 - Disable 'liga' in vertical text. 46 - Build fixes. 47 - API changes: 48 49 * Make HB_BUFFER_FLAG_BOT/EOT easier to use. 50 51 Previously, we expected users to provide BOT/EOT flags when the 52 text *segment* was at paragraph boundaries. This meant that for 53 clients that provide full paragraph to HarfBuzz (eg. Pango), they 54 had code like this: 55 56 hb_buffer_set_flags (hb_buffer, 57 (item_offset == 0 ? HB_BUFFER_FLAG_BOT : 0) | 58 (item_offset + item_length == paragraph_length ? 59 HB_BUFFER_FLAG_EOT : 0)); 60 61 hb_buffer_add_utf8 (hb_buffer, 62 paragraph_text, paragraph_length, 63 item_offset, item_length); 64 65 After this change such clients can simply say: 66 67 hb_buffer_set_flags (hb_buffer, 68 HB_BUFFER_FLAG_BOT | HB_BUFFER_FLAG_EOT); 69 70 hb_buffer_add_utf8 (hb_buffer, 71 paragraph_text, paragraph_length, 72 item_offset, item_length); 73 74 Ie, HarfBuzz itself checks whether the segment is at the beginning/end 75 of the paragraph. Clients that only pass item-at-a-time to HarfBuzz 76 continue not setting any flags whatsoever. 77 78 Another way to put it is: if there's pre-context text in the buffer, 79 HarfBuzz ignores the BOT flag. If there's post-context, it ignores 80 EOT flag. 81 82 83 Overview of changes leading to 0.9.32 84 Thursday, July 17, 2014 85 ===================================== 86 87 - Apply Arabic shaping features in spec order exactly. 88 - Another fix for Mongolian free variation selectors. 89 - For non-Arabic scripts in Arabic shaper apply 'rlig' and 'calt' 90 together. 91 - Minor adjustment to U+FFFD logic. 92 - Fix hb-coretext build. 93 94 95 Overview of changes leading to 0.9.31 96 Wednesday, July 16, 2014 97 ===================================== 98 99 - Only accept valid UTF-8/16/32; we missed many cases before. 100 - Better shaping of invalid UTF-8/16/32. Falls back to 101 U+FFFD REPLACEMENT CHARACTER now. 102 - With all changes in this release, the buffer will contain fully 103 valid Unicode after hb_buffer_add_utf8/16/32 no matter how 104 broken the input is. This can be overriden though. See below. 105 - Fix Mongolian Variation Selectors for fonts without GDEF. 106 - Fix minor invalid buffer access. 107 - Accept zh-Hant and zh-Hans language tags. hb_ot_tag_to_language() 108 now uses these instead of private tags. 109 - Build fixes. 110 - New API: 111 * hb_buffer_add_codepoints(). This does what hb_buffer_add_utf32() 112 used to do, ie. no validity check on the input at all. add_utf32 113 now replaces invalid Unicode codepoints with the replacement 114 character (see below). 115 * hb_buffer_set_replacement_codepoint() 116 * hb_buffer_get_replacement_codepoint() 117 Previously, in hb_buffer_add_utf8 and hb_buffer_add_utf16, when 118 we detected broken input, we replaced that with (hb_codepoint_t)-1. 119 This has changed to use U+FFFD now, but can be changed using these 120 new API. 121 122 123 Overview of changes leading to 0.9.30 124 Wednesday, July 9, 2014 125 ===================================== 126 127 - Update to Unicode 7.0.0: 128 * New scripts Manichaean and Psalter Pahlavi are shaped using 129 Arabic shaper. 130 * All the other new scripts to through the generic shaper for 131 now. 132 - Minor Indic improvements. 133 - Fix graphite2 backend cluster mapping [crasher!] 134 - API changes: 135 * New HB_SCRIPT_* values for Unicode 7.0 scripts. 136 * New function hb_ot_layout_language_get_required_feature(). 137 - Build fixes. 138 139 140 Overview of changes leading to 0.9.29 141 Thursday, May 29, 2014 142 ===================================== 143 144 - Implement cmap in hb-ot-font.h. No variation-selectors yet. 145 - Myanmar: Allow MedialYa+Asat. 146 - Various Indic fixes: 147 * Support most characters in Extended Devanagary and Vedic 148 Unicode blocks. 149 * Allow digits and a some punctuation as consonant placeholders. 150 - Build fixes. 151 152 153 Overview of changes leading to 0.9.28 154 Monday, April 28, 2014 155 ===================================== 156 157 - Unbreak old-spec Indic shaping. (bug 76705) 158 - Fix shaping of U+17DD and U+0FC6. 159 - Add HB_NO_MERGE_CLUSTERS build option. NOT to be enabled by default 160 for shipping libraries. It's an option for further experimentation 161 right now. When we are sure how to do it properly, we will add 162 public run-time API for the functionality. 163 - Build fixes. 164 165 166 Overview of changes leading to 0.9.27 167 Tuesday, March 18, 2014 168 ===================================== 169 170 - Don't use "register" storage class specifier 171 - Wrap definition of free_langs() with HAVE_ATEXIT 172 - Add coretext_aat shaper and hb_coretext_face_create() constructor 173 - If HAVE_ICU_BUILTIN is defined, use hb-icu Unicode callbacks 174 - Add Myanmar test case from OpenType Myanmar spec 175 - Only do fallback Hebrew composition if no GPOS 'mark' available 176 - Allow bootstrapping without gtk-doc 177 - Use AM_MISSING_PROG for ragel and git 178 - Typo in ucdn's Makefile.am 179 - Improve MemoryBarrier() implementation 180 181 182 Overview of changes leading to 0.9.26 183 Thursday, January 30, 2014 184 ===================================== 185 186 - Misc fixes. 187 - Fix application of 'rtlm' feature. 188 - Automatically apply frac/numr/dnom around U+2044 FRACTION SLASH. 189 - New header: hb-ot-shape.h 190 - Uniscribe: fix scratch-buffer accounting. 191 - Reorder Tai Tham SAKOT to after tone-marks. 192 - Add Hangul shaper. 193 - New files: 194 hb-ot-shape-complex-hangul.cc 195 hb-ot-shape-complex-hebrew.cc 196 hb-ot-shape-complex-tibetan.cc 197 - Disable 'cswh' feature in Arabic shaper. 198 - Coretext: better handle surrogate pairs. 199 - Add HB_TAG_MAX and _HB_SCRIPT_MAX_VALUE. 200 201 202 Overview of changes leading to 0.9.25 203 Wednesday, December 4, 2013 204 ===================================== 205 206 - Myanmar shaper improvements. 207 - Avoid font fallback in CoreText backend. 208 - Additional OpenType language tag mappiongs. 209 - More aggressive shape-plan caching. 210 - Build with / require automake 1.13. 211 - Build with libtool 2.4.2.418 alpha to support ppc64le. 212 213 214 Overview of changes leading to 0.9.24 215 Tuesday, November 13, 2013 216 ===================================== 217 218 - Misc compiler warning fixes with clang. 219 - No functional changes. 220 221 222 Overview of changes leading to 0.9.23 223 Monday, October 28, 2013 224 ===================================== 225 226 - "Udupi HarfBuzz Hackfest", Paris, October 14..18 2013. 227 - Fix (Chain)Context recursion with non-monotone lookup positions. 228 - Misc Indic bug fixes. 229 - New Javanese / Buginese shaping, similar to Windows 8.1. 230 231 232 Overview of changes leading to 0.9.22 233 Thursday, October 3, 2013 234 ===================================== 235 236 - Fix use-after-end-of-scope in hb_language_from_string(). 237 - Fix hiding of default_ignorables if font doesn't have space glyph. 238 - Protect against out-of-range lookup indices. 239 240 - API Changes: 241 242 * Added hb_ot_layout_table_get_lookup_count() 243 244 245 Overview of changes leading to 0.9.21 246 Monday, September 16, 2013 247 ===================================== 248 249 - Rename gobject-introspection library name from harfbuzz to HarfBuzz. 250 - Remove (long disabled) hb-old and hb-icu-le test shapers. 251 - Misc gtk-doc and gobject-introspection annotations. 252 - Misc fixes. 253 - API changes: 254 255 * Add HB_SET_VALUE_INVALID 256 257 Overview of changes leading to 0.9.20 258 Thursday, August 29, 2013 259 ===================================== 260 261 General: 262 - Misc substitute_closure() fixes. 263 - Build fixes. 264 265 Documentation: 266 - gtk-doc boilerplate integrated. Docs are built now, but 267 contain no contents. By next release hopefully we have 268 some content in. Enable using --enable-gtk-doc. 269 270 GObject and Introspection: 271 - Added harfbuzz-gobject library (hb-gobject.h) that has type 272 bindings for all HarfBuzz objects and enums. Enable using 273 --with-gobject. 274 - Added gobject-introspection boilerplate. Nothing useful 275 right now. Work in progress. Gets enabled automatically if 276 --with-gobject is used. Override with --disable-introspection. 277 278 OpenType shaper: 279 - Apply 'mark' in Myanmar shaper. 280 - Don't apply 'dlig' by default. 281 282 Uniscribe shaper: 283 - Support user features. 284 - Fix loading of fonts that are also installed on the system. 285 - Fix shaping of Arabic Presentation Forms. 286 - Fix build with wide chars. 287 288 CoreText shaper: 289 - Support user features. 290 291 Source changes: 292 - hb_face_t code moved to hb-face.h / hb-face.cc. 293 - Added hb-deprecated.h. 294 295 API changes: 296 - Added HB_DISABLE_DEPRECATED. 297 - Deprecated HB_SCRIPT_CANADIAN_ABORIGINAL; replaced by 298 HB_SCRIPT_CANADIAN_SYLLABICS. 299 - Deprecated HB_BUFFER_FLAGS_DEFAULT; replaced by 300 HB_BUFFER_FLAG_DEFAULT. 301 - Deprecated HB_BUFFER_SERIALIZE_FLAGS_DEFAULT; replaced by 302 HB_BUFFER_SERIALIZE_FLAG_DEFAULT. 303 304 305 Overview of changes leading to 0.9.19 306 Tuesday, July 16, 2013 307 ===================================== 308 309 - Build fixes. 310 - Better handling of multiple variation selectors in a row. 311 - Pass on variation selector to GSUB if not consumed by cmap. 312 - Fix undefined memory access. 313 - Add Javanese config to Indic shaper. 314 - Misc bug fixes. 315 316 Overview of changes leading to 0.9.18 317 Tuesday, May 28, 2013 318 ===================================== 319 320 New build system: 321 322 - All unneeded code is all disabled by default, 323 324 - Uniscribe and CoreText shapers can be enabled with their --with options, 325 326 - icu_le and old shapers cannot be enabled for now, 327 328 - glib, freetype, and cairo will be detected automatically. 329 They can be force on/off'ed with their --with options, 330 331 - icu and graphite2 are default off, can be enabled with their --with 332 options, 333 334 Moreover, ICU support is now build into a separate library: 335 libharfbuzz-icu.so, and a new harfbuzz-icu.pc is shipped for it. 336 Distros can enable ICU now without every application on earth 337 getting linked to via libharfbuzz.so. 338 339 For distros I recommend that they make sure they are building --with-glib 340 --with-freetype --with-cairo, --with-icu, and optionally --with-graphite2; 341 And package harfbuzz and harfbuzz-icu separately. 342 343 344 Overview of changes leading to 0.9.17 345 Monday, May 20, 2013 346 ===================================== 347 348 - Build fixes. 349 - Fix bug in hb_set_get_min(). 350 - Fix regression with Arabic mark positioning / width-zeroing. 351 352 Overview of changes leading to 0.9.16 353 Friday, April 19, 2013 354 ===================================== 355 356 - Major speedup in OpenType lookup processing. With the Amiri 357 Arabic font, this release is over 3x faster than previous 358 release. All scripts / languages should see this speedup. 359 360 - New --num-iterations option for hb-shape / hb-view; useful for 361 profiling. 362 363 Overview of changes leading to 0.9.15 364 Friday, April 05, 2013 365 ===================================== 366 367 - Build fixes. 368 - Fix crasher in graphite2 shaper. 369 - Fix Arabic mark width zeroing regression. 370 - Don't compose Hangul jamo into Unicode syllables. 371 372 373 Overview of changes leading to 0.9.14 374 Thursday, March 21, 2013 375 ===================================== 376 377 - Build fixes. 378 - Fix time-consuming sanitize with malicious fonts. 379 - Implement hb_buffer_deserialize_glyphs() for both json and text. 380 - Do not ignore Hangul filler characters. 381 - Indic fixes: 382 * Fix Malayalam pre-base reordering interaction with post-forms. 383 * Further adjust ZWJ handling. Should fix known regressions from 384 0.9.13. 385 386 387 Overview of changes leading to 0.9.13 388 Thursday, February 25, 2013 389 ===================================== 390 391 - Build fixes. 392 - Ngapi HarfBuzz Hackfest in London (February 2013): 393 * Fixed all known Indic bugs, 394 * New Win8-style Myanmar shaper, 395 * New South-East Asian shaper for Tai Tham, Cham, and New Tai Lue, 396 * Smartly ignore Default_Ignorable characters (joiners, etc) wheb 397 matching GSUB/GPOS lookups, 398 * Fix 'Phags-Pa U+A872 shaping, 399 * Fix partial disabling of default-on features, 400 * Allow disabling of TrueType kerning. 401 - Fix possible crasher with broken fonts with overlapping tables. 402 - Removed generated files from git again. So, one needs ragel to 403 bootstrap from the git tree. 404 405 API changes: 406 - hb_shape() and related APIs now abort if buffer direction is 407 HB_DIRECTION_INVALID. Previously, hb_shape() was calling 408 hb_buffer_guess_segment_properties() on the buffer before 409 shaping. The heuristics in that function are fragile. If the 410 user really wants the old behvaior, they can call that function 411 right before calling hb_shape() to get the old behavior. 412 - hb_blob_create_sub_blob() always creates sub-blob with 413 HB_MEMORY_MODE_READONLY. See comments for the reason. 414 415 416 Overview of changes leading to 0.9.12 417 Thursday, January 18, 2013 418 ===================================== 419 420 - Build fixes for Sun compiler. 421 - Minor bug fix. 422 423 Overview of changes leading to 0.9.11 424 Thursday, January 10, 2013 425 ===================================== 426 427 - Build fixes. 428 - Fix GPOS mark attachment with null Anchor offsets. 429 - [Indic] Fix old-spec reordering of viramas if sequence ends in one. 430 - Fix multi-threaded shaper data creation crash. 431 - Add atomic ops for Solaris. 432 433 API changes: 434 - Rename hb_buffer_clear() to hb_buffer_clear_contents(). 435 436 437 Overview of changes leading to 0.9.10 438 Thursday, January 3, 2013 439 ===================================== 440 441 - [Indic] Fixed rendering of Malayalam dot-reph 442 - Updated OT language tags. 443 - Updated graphite2 backend. 444 - Improved hb_ot_layout_get_size_params() logic. 445 - Improve hb-shape/hb-view help output. 446 - Fixed hb-set.h implementation to not crash. 447 - Fixed various issues with hb_ot_layout_collect_lookups(). 448 - Various build fixes. 449 450 New API: 451 452 hb_graphite2_face_get_gr_face() 453 hb_graphite2_font_get_gr_font() 454 hb_coretext_face_get_cg_font() 455 456 Modified API: 457 458 hb_ot_layout_get_size_params() 459 460 461 Overview of changes leading to 0.9.9 462 Wednesday, December 5, 2012 463 ==================================== 464 465 - Fix build on Windows. 466 - Minor improvements. 467 468 469 Overview of changes leading to 0.9.8 470 Tuesday, December 4, 2012 471 ==================================== 472 473 474 - Actually implement hb_shape_plan_get_shaper (). 475 - Make UCDB data tables const. 476 - Lots of internal refactoring in OTLayout tables. 477 - Flesh out hb_ot_layout_lookup_collect_glyphs(). 478 479 New API: 480 481 hb_ot_layout_collect_lookups() 482 hb_ot_layout_get_size_params() 483 484 485 Overview of changes leading to 0.9.7 486 Sunday, November 21, 2012 487 ==================================== 488 489 490 HarfBuzz "All-You-Can-Eat-Sushi" (aka Vancouver) Hackfest and follow-on fixes. 491 492 - Fix Arabic contextual joining using pre-context text. 493 - Fix Sinhala "split matra" mess. 494 - Fix Khmer shaping with broken fonts. 495 - Implement Thai "PUA" shaping for old fonts. 496 - Do NOT route Kharoshthi script through the Indic shaper. 497 - Disable fallback positioning for Indic and Thai shapers. 498 - Misc fixes. 499 500 501 hb-shape / hb-view changes: 502 503 - Add --text-before and --text-after 504 - Add --bot / --eot / --preserve-default-ignorables 505 - hb-shape --output-format=json 506 507 508 New API: 509 510 hb_buffer_clear() 511 512 hb_buffer_flags_t 513 514 HB_BUFFER_FLAGS_DEFAULT 515 HB_BUFFER_FLAG_BOT 516 HB_BUFFER_FLAG_EOT 517 HB_BUFFER_FLAG_PRESERVE_DEFAULT_IGNORABLES 518 519 hb_buffer_set_flags() 520 hb_buffer_get_flags() 521 522 HB_BUFFER_SERIALIZE_FLAGS 523 hb_buffer_serialize_glyphs() 524 hb_buffer_deserialize_glyphs() 525 hb_buffer_serialize_list_formats() 526 527 hb_set_add_range() 528 hb_set_del_range() 529 hb_set_get_population() 530 hb_set_next_range() 531 532 hb_face_[sg]et_glyph_count() 533 534 hb_segment_properties_t 535 HB_SEGMENT_PROPERTIES_DEFAULT 536 hb_segment_properties_equal() 537 hb_segment_properties_hash() 538 539 hb_buffer_set_segment_properties() 540 hb_buffer_get_segment_properties() 541 542 hb_ot_layout_glyph_class_t 543 hb_ot_layout_get_glyph_class() 544 hb_ot_layout_get_glyphs_in_class() 545 546 hb_shape_plan_t 547 hb_shape_plan_create() 548 hb_shape_plan_create_cached() 549 hb_shape_plan_get_empty() 550 hb_shape_plan_reference() 551 hb_shape_plan_destroy() 552 hb_shape_plan_set_user_data() 553 hb_shape_plan_get_user_data() 554 hb_shape_plan_execute() 555 hb_shape_plan_get_shaper() 556 557 hb_ot_shape_plan_collect_lookups() 558 559 560 API changes: 561 562 - Remove "mask" parameter from hb_buffer_add(). 563 - Rename hb_ot_layout_would_substitute_lookup() and hb_ot_layout_substitute_closure_lookup(). 564 - hb-set.h API const correction. 565 - Renamed hb_set_min/max() to hb_set_get_min/max(). 566 - Rename hb_ot_layout_feature_get_lookup_indexes() to hb_ot_layout_feature_get_lookups(). 567 - Rename hb_buffer_guess_properties() to hb_buffer_guess_segment_properties(). 568 569 570 571 Overview of changes leading to 0.9.6 572 Sunday, November 13, 2012 573 ==================================== 574 575 - Don't clear pre-context text if no new context is provided. 576 - Fix ReverseChainingSubstLookup, which was totally borked. 577 - Adjust output format of hb-shape a bit. 578 - Include config.h.in in-tree. Makes it easier for alternate build systems. 579 - Fix hb_buffer_set_length(buffer, 0) invalid memory allocation. 580 - Use ICU LayoutEngine's C API instead of C++. Avoids much headache. 581 - Drop glyphs for all of Unicode Default_Ignorable characters. 582 - Misc build fixes. 583 584 Arabic shaper: 585 - Enable 'dlig' and 'mset' features in Arabic shaper. 586 - Implement 'Phags-pa shaping, improve Mongolian. 587 588 Indic shaper: 589 - Decompose Sinhala split matras the way old HarfBuzz / Pango did. 590 - Initial support for Consonant Medials. 591 - Start adding new-style Myanmar shaping. 592 - Make reph and 'pref' logic introspect the font. 593 - Route Meetei-Mayek through the Indic shaper. 594 - Don't apply 'liga' in Indic shaper. 595 - Improve Malayalam pre-base reordering Ra interaction with Chillus. 596 597 598 599 Overview of changes leading to 0.9.5 600 Sunday, October 14, 2012 601 ==================================== 602 603 - Synthetic-GSUB Arabic fallback shaping. 604 605 - Misc Indic improvements. 606 607 - Add build system support for pthread. 608 609 - Imported UCDN for in-tree Unicode callbacks implementation. 610 611 - Context-aware Arabic joining. 612 613 - Misc other fixes. 614 615 - New API: 616 617 hb_feature_to/from-string() 618 hb_buffer_[sg]et_content_type() 619 620 621 622 Overview of changes leading to 0.9.4 623 Tuesday, Sep 03, 2012 624 ==================================== 625 626 - Indic improvements with old-spec Malayalam. 627 628 - Better fallback glyph positioning, specially with Thai / Lao marks. 629 630 - Implement dotted-circle insertion. 631 632 - Better Arabic fallback shaping / ligation. 633 634 - Added ICU LayoutEngine backend for testing. Call it by the 'icu_le' name. 635 636 - Misc fixes. 637 638 639 640 Overview of changes leading to 0.9.3 641 Friday, Aug 18, 2012 642 ==================================== 643 644 - Fixed fallback mark positioning for left-to-right text. 645 646 - Improve mark positioning for the remaining combining classes. 647 648 - Unbreak Thai and fallback Arabic shaping. 649 650 - Port Arabic shaper to shape-plan caching. 651 652 - Use new ICU normalizer functions. 653 654 655 656 Overview of changes leading to 0.9.2 657 Friday, Aug 10, 2012 658 ==================================== 659 660 - Over a thousand commits! This is the first major release of HarfBuzz. 661 662 - HarfBuzz is feature-complete now! It should be in par, or better, than 663 both Pango's shapers and old HarfBuzz / Qt shapers. 664 665 - New Indic shaper, supporting main Indic scripts, Sinhala, and Khmer. 666 667 - Improved Arabic shaper, with fallback Arabic shaping, supporting Arabic, 668 Sinhala, N'ko, Mongolian, and Mandaic. 669 670 - New Thai / Lao shaper. 671 672 - Tibetan / Hangul support in the generic shaper. 673 674 - Synthetic GDEF support for fonts without a GDEF table. 675 676 - Fallback mark positioning for fonts without a GPOS table. 677 678 - Unicode normalization shaping heuristic during glyph mapping. 679 680 - New experimental Graphite2 backend. 681 682 - New Uniscribe backend (primarily for testing). 683 684 - New CoreText backend (primarily for testing). 685 686 - Major optimization and speedup. 687 688 - Test suites and testing infrastructure (work in progress). 689 690 - Greatly improved hb-view cmdline tool. 691 692 - hb-shape cmdline tool. 693 694 - Unicode 6.1 support. 695 696 Summary of API changes: 697 698 o Changed API: 699 700 - Users are expected to only include main header files now (ie. hb.h, 701 hb-glib.h, hb-ft.h, ...) 702 703 - All struct tag names had their initial underscore removed. 704 Ie. "struct _hb_buffer_t" is "struct hb_buffer_t" now. 705 706 - All set_user_data() functions now take a "replace" boolean parameter. 707 708 - hb_buffer_create() takes zero arguments now. 709 Use hb_buffer_pre_allocate() to pre-allocate. 710 711 - hb_buffer_add_utf*() now accept -1 for length parameteres, 712 meaning "nul-terminated". 713 714 - hb_direction_t enum values changed. 715 716 - All *_from_string() APIs now take a length parameter to allow for 717 non-nul-terminated strings. A -1 length means "nul-terminated". 718 719 - Typedef for hb_language_t changed. 720 721 - hb_get_table_func_t renamed to hb_reference_table_func_t. 722 723 - hb_ot_layout_table_choose_script() 724 725 - Various renames in hb-unicode.h. 726 727 o New API: 728 729 - hb_buffer_guess_properties() 730 Automatically called by hb_shape(). 731 732 - hb_buffer_normalize_glyphs() 733 734 - hb_tag_from_string() 735 736 - hb-coretext.h 737 738 - hb-uniscribe.h 739 740 - hb_face_reference_blob() 741 - hb_face_[sg]et_index() 742 - hb_face_set_upem() 743 744 - hb_font_get_glyph_name_func_t 745 hb_font_get_glyph_from_name_func_t 746 hb_font_funcs_set_glyph_name_func() 747 hb_font_funcs_set_glyph_from_name_func() 748 hb_font_get_glyph_name() 749 hb_font_get_glyph_from_name() 750 hb_font_glyph_to_string() 751 hb_font_glyph_from_string() 752 753 - hb_font_set_funcs_data() 754 755 - hb_ft_font_set_funcs() 756 - hb_ft_font_get_face() 757 758 - hb-gobject.h (work in progress) 759 760 - hb_ot_shape_glyphs_closure() 761 hb_ot_layout_substitute_closure_lookup() 762 763 - hb-set.h 764 765 - hb_shape_full() 766 767 - hb_unicode_combining_class_t 768 769 - hb_unicode_compose_func_t 770 hb_unicode_decompose_func_t 771 hb_unicode_decompose_compatibility_func_t 772 hb_unicode_funcs_set_compose_func() 773 hb_unicode_funcs_set_decompose_func() 774 hb_unicode_funcs_set_decompose_compatibility_func() 775 hb_unicode_compose() 776 hb_unicode_decompose() 777 hb_unicode_decompose_compatibility() 778 779 o Removed API: 780 781 - hb_ft_get_font_funcs() 782 783 - hb_ot_layout_substitute_start() 784 hb_ot_layout_substitute_lookup() 785 hb_ot_layout_substitute_finish() 786 hb_ot_layout_position_start() 787 hb_ot_layout_position_lookup() 788 hb_ot_layout_position_finish() 789 790 791 792 Overview of changes leading to 0.6.0 793 Friday, May 27, 2011 794 ==================================== 795 796 - Vertical text support in GPOS 797 - Almost all API entries have unit tests now, under test/ 798 - All thread-safety issues are fixed 799 800 Summary of API changes follows. 801 802 803 * Simple Types API: 804 805 o New API: 806 HB_LANGUAGE_INVALID 807 hb_language_get_default() 808 hb_direction_to_string() 809 hb_direction_from_string() 810 hb_script_get_horizontal_direction() 811 HB_UNTAG() 812 813 o Renamed API: 814 hb_category_t renamed to hb_unicode_general_category_t 815 816 o Changed API: 817 hb_language_t is a typed pointers now 818 819 o Removed API: 820 HB_TAG_STR() 821 822 823 * Use ISO 15924 tags for hb_script_t: 824 825 o New API: 826 hb_script_from_iso15924_tag() 827 hb_script_to_iso15924_tag() 828 hb_script_from_string() 829 830 o Changed API: 831 HB_SCRIPT_* enum members changed value. 832 833 834 * Buffer API streamlined: 835 836 o New API: 837 hb_buffer_reset() 838 hb_buffer_set_length() 839 hb_buffer_allocation_successful() 840 841 o Renamed API: 842 hb_buffer_ensure() renamed to hb_buffer_pre_allocate() 843 hb_buffer_add_glyph() renamed to hb_buffer_add() 844 845 o Removed API: 846 hb_buffer_clear() 847 hb_buffer_clear_positions() 848 849 o Changed API: 850 hb_buffer_get_glyph_infos() takes an out length parameter now 851 hb_buffer_get_glyph_positions() takes an out length parameter now 852 853 854 * Blob API streamlined: 855 856 o New API: 857 hb_blob_get_data() 858 hb_blob_get_data_writable() 859 860 o Renamed API: 861 hb_blob_create_empty() renamed to hb_blob_get_empty() 862 863 o Removed API: 864 hb_blob_lock() 865 hb_blob_unlock() 866 hb_blob_is_writable() 867 hb_blob_try_writable() 868 869 o Changed API: 870 hb_blob_create() takes user_data before destroy now 871 872 873 * Unicode functions API: 874 875 o Unicode function vectors can subclass other unicode function vectors now. 876 Unimplemented callbacks in the subclass automatically chainup to the parent. 877 878 o All hb_unicode_funcs_t callbacks take a user_data now. Their setters 879 take a user_data and its respective destroy callback. 880 881 o New API: 882 hb_unicode_funcs_get_empty() 883 hb_unicode_funcs_get_default() 884 hb_unicode_funcs_get_parent() 885 886 o Changed API: 887 hb_unicode_funcs_create() now takes a parent_funcs. 888 889 o Removed func getter functions: 890 hb_unicode_funcs_get_mirroring_func() 891 hb_unicode_funcs_get_general_category_func() 892 hb_unicode_funcs_get_script_func() 893 hb_unicode_funcs_get_combining_class_func() 894 hb_unicode_funcs_get_eastasian_width_func() 895 896 897 * Face API: 898 899 o Renamed API: 900 hb_face_get_table() renamed to hb_face_reference_table() 901 hb_face_create_for_data() renamed to hb_face_create() 902 903 o Changed API: 904 hb_face_create_for_tables() takes user_data before destroy now 905 hb_face_reference_table() returns empty blob instead of NULL 906 hb_get_table_func_t accepts the face as first parameter now 907 908 * Font API: 909 910 o Fonts can subclass other fonts now. Unimplemented callbacks in the 911 subclass automatically chainup to the parent. When chaining up, 912 scale is adjusted if the parent font has a different scale. 913 914 o All hb_font_funcs_t callbacks take a user_data now. Their setters 915 take a user_data and its respective destroy callback. 916 917 o New API: 918 hb_font_get_parent() 919 hb_font_funcs_get_empty() 920 hb_font_create_sub_font() 921 922 o Removed API: 923 hb_font_funcs_copy() 924 hb_font_unset_funcs() 925 926 o Removed func getter functions: 927 hb_font_funcs_get_glyph_func() 928 hb_font_funcs_get_glyph_advance_func() 929 hb_font_funcs_get_glyph_extents_func() 930 hb_font_funcs_get_contour_point_func() 931 hb_font_funcs_get_kerning_func() 932 933 o Changed API: 934 hb_font_create() takes a face and references it now 935 hb_font_set_funcs() takes user_data before destroy now 936 hb_font_set_scale() accepts signed integers now 937 hb_font_get_contour_point_func_t now takes glyph first, then point_index 938 hb_font_get_glyph_func_t returns a success boolean now 939 940 941 * Changed object model: 942 943 o All object types have a _get_empty() now: 944 hb_blob_get_empty() 945 hb_buffer_get_empty() 946 hb_face_get_empty() 947 hb_font_get_empty() 948 hb_font_funcs_get_empty() 949 hb_unicode_funcs_get_empty() 950 951 o Added _set_user_data() and _get_user_data() for all object types: 952 hb_blob_get_user_data() 953 hb_blob_set_user_data() 954 hb_buffer_get_user_data() 955 hb_buffer_set_user_data() 956 hb_face_get_user_data() 957 hb_face_set_user_data() 958 hb_font_funcs_get_user_data() 959 hb_font_funcs_set_user_data() 960 hb_font_get_user_data() 961 hb_font_set_user_data() 962 hb_unicode_funcs_get_user_data() 963 hb_unicode_funcs_set_user_data() 964 965 o Removed the _get_reference_count() from all object types: 966 hb_blob_get_reference_count() 967 hb_buffer_get_reference_count() 968 hb_face_get_reference_count() 969 hb_font_funcs_get_reference_count() 970 hb_font_get_reference_count() 971 hb_unicode_funcs_get_reference_count() 972 973 o Added _make_immutable() and _is_immutable() for all object types except for buffer: 974 hb_blob_make_immutable() 975 hb_blob_is_immutable() 976 hb_face_make_immutable() 977 hb_face_is_immutable() 978 979 980 * Changed API for vertical text support 981 982 o The following callbacks where removed: 983 hb_font_get_glyph_advance_func_t 984 hb_font_get_kerning_func_t 985 986 o The following new callbacks added instead: 987 hb_font_get_glyph_h_advance_func_t 988 hb_font_get_glyph_v_advance_func_t 989 hb_font_get_glyph_h_origin_func_t 990 hb_font_get_glyph_v_origin_func_t 991 hb_font_get_glyph_h_kerning_func_t 992 hb_font_get_glyph_v_kerning_func_t 993 994 o The following API removed as such: 995 hb_font_funcs_set_glyph_advance_func() 996 hb_font_funcs_set_kerning_func() 997 hb_font_get_glyph_advance() 998 hb_font_get_kerning() 999 1000 o New API added instead: 1001 hb_font_funcs_set_glyph_h_advance_func() 1002 hb_font_funcs_set_glyph_v_advance_func() 1003 hb_font_funcs_set_glyph_h_origin_func() 1004 hb_font_funcs_set_glyph_v_origin_func() 1005 hb_font_funcs_set_glyph_h_kerning_func() 1006 hb_font_funcs_set_glyph_v_kerning_func() 1007 hb_font_get_glyph_h_advance() 1008 hb_font_get_glyph_v_advance() 1009 hb_font_get_glyph_h_origin() 1010 hb_font_get_glyph_v_origin() 1011 hb_font_get_glyph_h_kerning() 1012 hb_font_get_glyph_v_kerning() 1013 1014 o The following higher-leve API added for convenience: 1015 hb_font_get_glyph_advance_for_direction() 1016 hb_font_get_glyph_origin_for_direction() 1017 hb_font_add_glyph_origin_for_direction() 1018 hb_font_subtract_glyph_origin_for_direction() 1019 hb_font_get_glyph_kerning_for_direction() 1020 hb_font_get_glyph_extents_for_origin() 1021 hb_font_get_glyph_contour_point_for_origin() 1022 1023 1024 * OpenType Layout API: 1025 1026 o New API: 1027 hb_ot_layout_position_start() 1028 hb_ot_layout_substitute_start() 1029 hb_ot_layout_substitute_finish() 1030 1031 1032 * Glue code: 1033 1034 o New API: 1035 hb_glib_script_to_script() 1036 hb_glib_script_from_script() 1037 hb_icu_script_to_script() 1038 hb_icu_script_from_script() 1039 1040 1041 * Version API added: 1042 1043 o New API: 1044 HB_VERSION_MAJOR 1045 HB_VERSION_MINOR 1046 HB_VERSION_MICRO 1047 HB_VERSION_STRING 1048 HB_VERSION_CHECK() 1049 hb_version() 1050 hb_version_string() 1051 hb_version_check() 1052 1053 1054
