X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=NEWS;h=e62b1989c5a8201368f55983585a47c596ecfd38;hb=087e8c5d58be057cb77192932cd7fa8f7aacf1a5;hp=c4950e262096666ca50dfd702a3c961b75311527;hpb=4b524cd9449699e546a0991326d12ee2c915fab3;p=platform%2Fupstream%2Fharfbuzz.git diff --git a/NEWS b/NEWS index c4950e2..e62b198 100644 --- a/NEWS +++ b/NEWS @@ -1,3 +1,322 @@ +Overview of changes leading to 1.2.7 +Monday, May 2, 2016 +==================================== + +- Blacklist another version of Times New Roman (Bold) Italic from Windows 7. +- Fix Mongolian Free Variation Selectors shaping with certain fonts. +- Fix Tibetan shorthand contractions shaping. +- Improved list of language tag mappings. +- Unbreak build on Windows CE. +- Make 'glyf' table loading lazy in hb-ot-font. + + +Overview of changes leading to 1.2.6 +Friday, April 8, 2016 +==================================== + +- Blacklist GDEF table of another set of Times New Roman (Bold) Italic. +- DirectWrite backend improvements. Note: DirectWrite backend is + exclusively for our internal testing and should NOT be used in any + production system whatsoever. + + +Overview of changes leading to 1.2.5 +Monday, April 4, 2016 +==================================== + +- Fix GDEF mark-filtering-set, which was broken in 1.2.3. + + +Overview of changes leading to 1.2.4 +Thursday, March 17, 2016 +==================================== + +- Synthesize GDEF glyph class for any glyph that does not have one in GDEF. + I really hope we don't discover broken fonts that shape badly with this + change. +- Misc build and other minor fixes. +- API changes: + - Added HB_NDEBUG. It's fine for production systems to define this to + disable high-overhead debugging checks. However, I also reduced the + overhead of those checks, so it's a non-issue right now. You can + forget it. Just not defining anything at all is fine. + + +Overview of changes leading to 1.2.3 +Thursday, February 25, 2016 +==================================== + +- Blacklist GDEF table of certain versions of Times New Roman (Bold) Italic, + due to bug in glyph class of ASCII double-quote character. This should + address "regression" introduced in 1.2.0 when we switched mark zeroing + in most shapers from BY_UNICODE_LATE to BY_GDEF_LATE. + This fourth release in a week should finally stablize things... + +- hb-ot-font's get_glyph() implementation saw some optimizations. Though, + might be really hard to measure in real-world situations. + +- Also, two rather small API changes: + +We now disable some time-consuming internal bookkeeping if built with NDEBUG +defined. This is a first time that we use NDEBUG to disable debug code. If +there exist production systems that do NOT want to enable NDEBUG, please let +me know and I'll add HB_NDEBUG. + +Added get_nominal_glyph() and get_variation_glyph() instead of get_glyph() + +New API: +- hb_font_get_nominal_glyph_func_t +- hb_font_get_variation_glyph_func_t +- hb_font_funcs_set_nominal_glyph_func() +- hb_font_funcs_set_variation_glyph_func() +- hb_font_get_nominal_glyph() +- hb_font_get_variation_glyph() + +Deprecated API: +- hb_font_get_glyph_func_t +- hb_font_funcs_set_glyph_func() + +Clients that implement their own font-funcs are encouraged to replace +their get_glyph() implementation with a get_nominal_glyph() and +get_variation_glyph() pair. The variation version can assume that +variation_selector argument is not zero. Old (deprecated) functions +will continue working indefinitely using internal gymnastics; it is +just more efficient to use the new functions. + + +Overview of changes leading to 1.2.2 +Wednesday, February 24, 2016 +==================================== + +- Fix regression with mark positioning with fonts that have + non-zero mark advances. This was introduced in 1.2.0 while + trying to make mark and cursive attachments to work together. + I have partially reverted that, so this version is much more + like what we had before. All clients who updated to 1.2.0 + should update to this version. + + +Overview of changes leading to 1.2.1 +Tuesday, February 23, 2016 +==================================== + +- CoreText: Fix bug with wrong scale if font scale was changed later. + https://github.com/libass/libass/issues/212 +- CoreText: Drastically speed up font initialization. +- CoreText: Fix tiny leak. +- Group ZWJ/ZWNJ with previous syllable under cluster-level=0. + https://github.com/behdad/harfbuzz/issues/217 +- Add test/shaping/README.md about how to add tests to the suite. + + +Overview of changes leading to 1.2.0 +Friday, February 19, 2016 +==================================== + +- Fix various issues (hangs mostly) in case of memory allocation failure. +- Change mark zeroing types of most shapers from BY_UNICODE_LATE to + BY_GDEF_LATE. This seems to be what Uniscribe does. +- Change mark zeroing of USE shaper from NONE to BY_GDEF_EARLY. That's + what Windows does. +- Allow GPOS cursive connection on marks, and fix the interaction with + mark attachment. This work resulted in some changes to how mark + attachments work. See: + https://github.com/behdad/harfbuzz/issues/211 + https://github.com/behdad/harfbuzz/commit/86c68c7a2c971efe8e35b1f1bd99401dc8b688d2 +- Graphite2 shaper: improved negative advance handling (eg. Nastaliq). +- Add nmake-based build system for Windows. +- Minor speedup. +- Misc. improvements. + + +Overview of changes leading to 1.1.3 +Monday, January 11, 2016 +==================================== + +- Ported Indic shaper to Unicode 8.0 data. +- Universal Shaping Engine fixes. +- Speed up CoreText shaper when font fallback happens in CoreText. +- Documentation improvements, thanks to Khaled Hosny. +- Very rough directwrite shaper for testing, thanks to Ebrahim Byagowi. +- Misc bug fixes. +- New API: + + * Font extents: + hb_font_extents_t + hb_font_get_font_extents_func_t + hb_font_get_font_h_extents_func_t + hb_font_get_font_v_extents_func_t + hb_font_funcs_set_font_h_extents_func + hb_font_funcs_set_font_v_extents_func + hb_font_get_h_extents + hb_font_get_v_extents + hb_font_get_extents_for_direction + + * Buffer message (aka debug): + hb_buffer_message_func_t + hb_buffer_set_message_func() + Actual message protocol to be fleshed out later. + + +Overview of changes leading to 1.1.2 +Wednesday, November 26, 2015 +==================================== + +- Fix badly-broken fallback shaper that affected terminology. + https://github.com/behdad/harfbuzz/issues/187 +- Fix y_scaling in Graphite shaper. +- API changes: + * An unset glyph_h_origin() function in font-funcs now (sensibly) + implies horizontal origin at 0,0. Ie, the nil callback returns + true instead of false. As such, implementations that have a + glyph_h_origin() that simply returns true, can remove that function + with HarfBuzz >= 1.1.2. This results in a tiny speedup. + + +Overview of changes leading to 1.1.1 +Wednesday, November 24, 2015 +==================================== + +- Build fixes, specially for hb-coretext. + + +Overview of changes leading to 1.1.0 +Wednesday, November 18, 2015 +==================================== + +- Implement 'stch' stretch feature for Syriac Abbreviation Mark. + https://github.com/behdad/harfbuzz/issues/141 +- Disable use of decompose_compatibility() callback. +- Implement "shaping" of various Unicode space characters, even + if the font does not support them. + https://github.com/behdad/harfbuzz/issues/153 +- If font does not support U+2011 NO-BREAK HYPHEN, fallback to + U+2010 HYPHEN. +- Changes resulting from libFuzzer continuous fuzzing: + * Reject font tables that need more than 8 edits, + * Bound buffer growth during shaping to 32x, + * Fix assertions and other issues at OOM / buffer max-growth. +- Misc fixes and optimizations. +- API changes: + * All fonts created with hb_font_create() now inherit from + (ie. have parent) hb_font_get_empty(). + + +Overview of changes leading to 1.0.6 +Thursday, October 15, 2015 +==================================== + +- Reduce max nesting level in OT lookups from 8 to 6. + Should not affect any real font as far as I know. +- Fix memory access issue in ot-font. +- Revert default load-flags of fonts created using hb_ft_font_create() + back to FT_LOAD_DEFAULT|FT_LOAD_NO_HINTING. This was changed in + last release (1.0.5), but caused major issues, so revert. + https://github.com/behdad/harfbuzz/issues/143 + + +Overview of changes leading to 1.0.5 +Tuesday, October 13, 2015 +==================================== + +- Fix multiple memory access bugs discovered using libFuzzer. + https://github.com/behdad/harfbuzz/issues/139 + Everyone should upgrade to this version as soon as possible. + We now have continuous fuzzing set up, to avoid issues like + these creeping in again. +- Misc fixes. + +- New API: + * hb_font_set_parent(). + * hb_ft_font_[sg]et_load_flags() + The default flags for fonts created using hb_ft_font_create() + has changed to default to FT_LOAD_DEFAULT now. Previously it + was defaulting to FT_LOAD_DFEAULT|FT_LOAD_NO_HINTING. + +- API changes: + * Fonts now default to units-per-EM as their scale, instead of 0. + * hb_font_create_sub_font() does NOT make parent font immutable + anymore. hb_font_make_immutable() does. + + +Overview of changes leading to 1.0.4 +Wednesday, September 30, 2015 +==================================== + +- Fix minor out-of-bounds read error. + + +Overview of changes leading to 1.0.3 +Tuesday, September 1, 2015 +==================================== + +- Start of user documentation, from Simon Cozens! +- Implement glyph_extents() for TrueType fonts in hb-ot-font. +- Improve GPOS cursive attachments with conflicting lookups. +- More fixes for cluster-level = 1. +- Uniscribe positioning fix. + + +Overview of changes leading to 1.0.2 +Wednesday, August 19, 2015 +==================================== + +- Fix shaping with cluster-level > 0. +- Fix Uniscribe backend font-size scaling. +- Declare dependencies in harfbuzz.pc. + FreeType is not declared though, to avoid bugs in pkg-config + 0.26 with recursive dependencies. +- Slightly improved debug infrastructure. More to come later. +- Misc build fixes. + + +Overview of changes leading to 1.0.1 +Monday, July 27, 2015 +==================================== + +- Fix out-of-bounds access in USE shaper. + + +Overview of changes leading to 1.0.0 +Sunday, July 26, 2015 +==================================== + +- Implement Universal Shaping Engine: + https://www.microsoft.com/typography/OpenTypeDev/USE/intro.htm + http://blogs.windows.com/bloggingwindows/2015/02/23/windows-shapes-the-worlds-languages/ +- Bump version to 1.0.0. The soname was NOT bumped. + + +Overview of changes leading to 0.9.42 +Thursday, July 26, 2015 +===================================== + +- New API to allow for retrieving finer-grained cluster + mappings if the client desires to handle them. Default + behavior is unchanged. +- Fix cluster merging when removing default-ignorables. +- Update to Unicode 8.0 +- hb-graphite2 fixes. +- Misc fixes. +- Removed HB_NO_MERGE_CLUSTERS hack. +- New API: + hb_buffer_cluster_level_t enum + hb_buffer_get_cluster_level() + hb_buffer_set_cluster_level() + hb-shape / hb-view --cluster-level + + +Overview of changes leading to 0.9.41 +Thursday, June 18, 2015 +===================================== + +- Fix hb-coretext with trailing whitespace in right-to-left. +- New API: hb_buffer_reverse_range(). +- Allow implementing atomic ops in config.h. +- Fix hb_language_t in language bindings. +- Misc fixes. + + Overview of changes leading to 0.9.40 Friday, March 20, 2015 =====================================