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diff --git a/thirdparty/harfbuzz/NEWS b/thirdparty/harfbuzz/NEWS deleted file mode 100644 index 321c550188..0000000000 --- a/thirdparty/harfbuzz/NEWS +++ /dev/null @@ -1,2457 +0,0 @@ -Overview of changes leading to 2.8.0 -Tuesday, March 16, 2021 -==================================== -- Shape joining scripts other than Arabic/Syriac using the Universal Shaping Engine. - Previously these were shaped using the generalized Arabic shaper. (David Corbett) -- Fix regression in shaping of U+0B55 ORIYA SIGN OVERLINE. (David Corbett) -- Update language tags. (David Corbett) -- Variations: reduce error: do not round each interpolated delta. (Just van Rossum) -- Documentation improvements. (Khaled Hosny, Nathan Willis) -- Subsetter improvements: subsets most, if not all, lookup types now. (Garret Rieger, Qunxin Liu) -- Fuzzer-found fixes and other improvements when memory failures happen. (Behdad) -- Removed most atomic implementations now that we have C++11 atomic impl. (Behdad) -- General codebase upkeep; using more C++11 features: constexpr constructors, etc. (Behdad) - - -Overview of changes leading to 2.7.4 -Sunday, December 27, 2020 -==================================== -- Fix missing --enable-introspection configure option from previous release - tarball. -- Documentation updates. - -Overview of changes leading to 2.7.3 -Wednesday, December 23, 2020 -==================================== -- Update USE shaper to 2020-08-13 specification, and other improvements. -- Don’t disable liga feature in myanmar shaper, to match Uniscribe. -- Improvements to language and script tags handling. -- Update language system tag registry to OpenType 1.8.4 -- Support for serializing and deserializing Unicode buffers. Serialized buffers - are now delimited with `<>` or `[]` based on whether it is a Unicode or - glyphs buffer. -- Increase buffer work limits to handle fonts with many complex lookups. -- Handle more shaping operations in trace output. -- Memory access fixes. -- More OOM fixes. -- Improved documentation. -- Build system improvements. -- New API: -+hb_buffer_has_positions() -+hb_buffer_serialize() -+hb_buffer_serialize_unicode() -+hb_buffer_deserialize_unicode() - - -Overview of changes leading to 2.7.2 -Saturday, August 29, 2020 -==================================== -- Fix a regression in the previous release that caused a crash with Kaithi. -- More OOM fixes. - - -Overview of changes leading to 2.7.1 -Thursday, August 13, 2020 -==================================== -- ot-funcs now handles variable empty glyphs better when hvar/vvar isn't present. -- Reverted a GDEF processing regression. -- A couple of fixes to handle OOM better. - - -Overview of changes leading to 2.7.0 -Saturday, July 25, 2020 -==================================== -- Use an implementation for round that always rounds up, some minor fluctuations - are expected on var font specially when hb-ot callback is used. -- Fix an AAT's `kerx` issue on broken rendering of Devanagari Sangam MN. -- Remove AAT's `lcar` table support from _get_ligature_carets API, not even much - use on macOS installed fonts (only two files). GDEF support is the recommended - one and expected to work properly after issues fixed two releases ago. -- Minor memory fixes to handle OOM better specially in hb-ft. -- Minor .so files versioning scheme change and remove stable/unstable scheme - differences, was never used in practice (always default to stable scheme). -- We are now suggesting careful packaging of the library using meson, - https://github.com/harfbuzz/harfbuzz/wiki/Notes-on-migration-to-meson - for more information. -- Distribution package URL is changed, either use GitHub generated tarballs, - `https://github.com/harfbuzz/harfbuzz/archive/$pkgver.tar.gz` - or, even more preferably use commit hash of the release and git checkouts like, - `git+https://github.com/harfbuzz/harfbuzz#commit=$commit` - - -Overview of changes leading to 2.6.8 -Monday, June 22, 2020 -==================================== -- New API to fetch glyph alternates from GSUB table. -- hb-coretext build fix for macOS < 10.10. -- Meson build fixes, cmake port removal is postponed but please prepare for - it and give us feedback. - Autotools is still our main build system however please consider - experimenting with meson also for packaging the library. -- New API: -+hb_ot_layout_lookup_get_glyph_alternates() - - -Overview of changes leading to 2.6.7 -Wednesday, June 3, 2020 -==================================== -- Update to Unicode 13.0.0. -- Fix hb_ot_layout_get_ligature_carets for fonts without lcar table, it was - completely broken for all the other fonts since 2.1.2. -- As a part of our migration to meson, this release will be the last one - to provide cmake port files but autotools still is our main build system. - There is a possibility that the next version or the after be released - using meson. - - -Overview of changes leading to 2.6.6 -Tuesday, May 12, 2020 -==================================== -- A fix in AAT kerning for Geeza Pro. -- Better support for resource fork fonts on macOS. - - -Overview of changes leading to 2.6.5 -Friday, April 17, 2020 -==================================== -- Add experimental meson build system. Autotools is still the primary - and supported build system. -- AAT is now always preferred for horizontal scripts when both AAT and OT - layout tables exist at the same time. -- Subsetter improvements. -- New API: -+hb_ft_font_lock_face() -+hb_ft_font_unlock_face() - - -Overview of changes leading to 2.6.4 -Monday, October 29, 2019 -==================================== -- Small bug fix. -- Build fixes. - - -Overview of changes leading to 2.6.3 -Monday, October 28, 2019 -==================================== -- Misc small fixes, mostly to build-related issues. -- New API: -+hb_font_get_nominal_glyphs() - - -Overview of changes leading to 2.6.2 -Monday, September 30, 2019 -==================================== -- Misc small fixes, mostly to build-related issues. - - -Overview of changes leading to 2.6.1 -Thursday, August 22, 2019 -==================================== -- Fix regression with hb_font_create_sub_font scaling introduced in 2.6.0. -- Change interpretation of font PTEM size / CoreText font size handling. - See https://github.com/harfbuzz/harfbuzz/pull/1484 -- hb-ot-font: Prefer symbol cmap subtable if present. -- Apply 'dist'/'abvm'/'blwm' features to all scripts. -- Drop experimental DirectWrite API. - - -Overview of changes leading to 2.6.0 -Tuesday, August 13, 2019 -==================================== -- New OpenType metrics, baseline, and metadata table access APIs. -- New API to set font variations to a named-instance. -- New hb-gdi.h header and API for creating hb_face_t from HFONT. -- Amalgam: Provide a single-file harfbuzz.cc file for easier alternate building. -- More size-reduction configurable options, enabled by HB_TINY. -- New API: -+hb_font_set_var_named_instance() -+hb_gdi_face_create() -+hb_ot_layout_baseline_tag_t -+hb_ot_layout_get_baseline() -+hb_ot_meta_tag_t -+hb_ot_meta_get_entry_tags() -+hb_ot_meta_reference_entry() -+hb_ot_metrics_tag_t -+hb_ot_metrics_get_position() -+hb_ot_metrics_get_variation() -+hb_ot_metrics_get_x_variation() -+hb_ot_metrics_get_y_variation() - - -Overview of changes leading to 2.5.3 -Wednesday, June 26, 2019 -==================================== -- Fix UCD script data for Unicode 10+ scripts. This was broken since 2.5.0. -- More optimizations for HB_TINY. - - -Overview of changes leading to 2.5.2 -Thursday, June 20, 2019 -==================================== -- More hb-config.hh facilities to shrink library size, namely when built as - HB_TINY. -- New documentation of custom configurations in CONFIG.md. -- Fix build on gcc 4.8. That's supported again. -- Universal Shaping Engine improvements thanks to David Corbett. -- API Changes: Undeprecate some horizontal-kerning API and re-enable in hb-ft, - such that Type1 fonts will continue kerning. - - -Overview of changes leading to 2.5.1 -Friday, May 31, 2019 -==================================== -- Fix build with various versions of Visual Studio. -- Improved documentation, thanks to Nathan Willis. -- Bugfix in subsetting glyf table. -- Improved scripts for cross-compiling for Windows using mingw. -- Rename HB_MATH_GLYPH_PART_FLAG_EXTENDER to HB_OT_MATH_GLYPH_PART_FLAG_EXTENDER. - A deprecated macro is added for backwards-compatibility. - - -Overview of changes leading to 2.5.0 -Friday, May 24, 2019 -==================================== -- This release does not include much functional changes, but includes major internal - code-base changes. We now require C++11. Support for gcc 4.8 and earlier has been - dropped. -- New hb-config.hh facility for compiling smaller library for embedded and web usecases. -- New Unicode Character Databse implementation that is half the size of previously-used - UCDN. -- Subsetter improvements. -- Improved documentation, thanks to Nathan Willis. -- Misc shaping fixes. - - -Overview of changes leading to 2.4.0 -Monday, March 25, 2019 -==================================== -- Unicode 12. -- Misc fixes. -- Subsetter improvements. -- New API: -HB_BUFFER_FLAG_DO_NOT_INSERT_DOTTED_CIRCLE -hb_directwrite_face_create() - - -Overview of changes leading to 2.3.1 -Wednesday, January 30, 2019 -==================================== -- AAT bug fixes. -- Misc internal housekeeping cleanup. - - -Overview of changes leading to 2.3.0 -Thursday, December 20, 2018 -==================================== -- Fix regression on big-endian architectures. Ouch! -- Misc bug and build fixes. -- Fix subsetting of simple GSUB/GDEF. -- Merge CFF / CFF2 support contributed by Adobe. This mostly involves - the subsetter, but also get_glyph_extents on CFF fonts. - -New API in hb-aat.h: -+hb_aat_layout_has_substitution() -+hb_aat_layout_has_positioning() -+hb_aat_layout_has_tracking() - - -Overview of changes leading to 2.2.0 -Thursday, November 29, 2018 -==================================== -- Misc shaping bug fixes. -- Add font variations named-instance API. -- Deprecate font variations axis enumeration API and add replacement. -- AAT shaping improvements: - o Fixed 'kern' table Format 2 implementation. - o Implement 'feat' table API for feature detection. - o Blacklist 'GSUB' table of fonts from 'MUTF' foundry that also have 'morx'. - -New API: -+hb_aat_layout_feature_type_t -+hb_aat_layout_feature_selector_t -+hb_aat_layout_get_feature_types() -+hb_aat_layout_feature_type_get_name_id -+hb_aat_layout_feature_selector_info_t -+HB_AAT_LAYOUT_NO_SELECTOR_INDEX -+hb_aat_layout_feature_type_get_selector_infos() -+hb_ot_var_axis_flags_t -+hb_ot_var_axis_info_t -+hb_ot_var_get_axis_infos() -+hb_ot_var_find_axis_info() -+hb_ot_var_get_named_instance_count() -+hb_ot_var_named_instance_get_subfamily_name_id() -+hb_ot_var_named_instance_get_postscript_name_id() -+hb_ot_var_named_instance_get_design_coords() - -Deprecated API: -+HB_OT_VAR_NO_AXIS_INDEX -+hb_ot_var_axis_t -+hb_ot_var_get_axes() -+hb_ot_var_find_axis() - - -Overview of changes leading to 2.1.3 -Friday, November 16, 2018 -==================================== -- Fix AAT 'mort' shaping, which was broken in 2.1.2 - - -Overview of changes leading to 2.1.2 -Friday, November 16, 2018 -==================================== -- Various internal changes. -- AAT shaping improvements: - o Implement kern table Format 1 state-machine-based kerning. - o Implement cross-stream kerning (cursive positioning, etc). - o Ignore emptyish GSUB tables (zero scripts) if morx present. - o Don't apply GPOS if morx is being applied. Matches Apple. - - --Overview of changes leading to 2.1.1 -Monday, November 5, 2018 -==================================== -- AAT improvements: - o Implement 'mort' table. - o Implement 'kern' subtables Format 1 and Format 3. - - -Overview of changes leading to 2.1.0 -Tuesday, October 30, 2018 -==================================== -- AAT shaping improvements: - o Allow user controlling AAT features, for whole buffer only currently. - o Several 'morx' fixes. - o Implement tuple-kerns in 'kerx'; Fixes kerning with Apple default - San Francisco fonts. -- Support for color fonts: - o COLR/CPAL API to fetch color layers. - o SVG table to fetch SVG documents. - o CBDT/sbix API to fetch PNG images. -- New 'name' table API. -- hb-ot-font now uses 'VORG' table to correctly position CFF glyphs - in vertical layout. -- Various fuzzer-found bug fixes. - -Changed API: - -A type and a macro added in 2.0.0 were renamed: - -hb_name_id_t -> hb_ot_name_id_t -HB_NAME_ID_INVALID -> HB_OT_NAME_ID_INVALID - -New API: - -+hb_color_t -+HB_COLOR -+hb_color_get_alpha() -+hb_color_get_red() -+hb_color_get_green() -+hb_color_get_blue() -+hb_ot_color_has_palettes() -+hb_ot_color_palette_get_count() -+hb_ot_color_palette_get_name_id() -+hb_ot_color_palette_color_get_name_id() -+hb_ot_color_palette_flags_t -+hb_ot_color_palette_get_flags() -+hb_ot_color_palette_get_colors() -+hb_ot_color_has_layers() -+hb_ot_color_layer_t -+hb_ot_color_glyph_get_layers() -+hb_ot_color_has_svg() -+hb_ot_color_glyph_reference_svg() -+hb_ot_color_has_png() -+hb_ot_color_glyph_reference_png() - -+hb_ot_name_id_t -+HB_OT_NAME_ID_INVALID -+HB_OT_NAME_ID_COPYRIGHT -+HB_OT_NAME_ID_FONT_FAMILY -+HB_OT_NAME_ID_FONT_SUBFAMILY -+HB_OT_NAME_ID_UNIQUE_ID -+HB_OT_NAME_ID_FULL_NAME -+HB_OT_NAME_ID_VERSION_STRING -+HB_OT_NAME_ID_POSTSCRIPT_NAME -+HB_OT_NAME_ID_TRADEMARK -+HB_OT_NAME_ID_MANUFACTURER -+HB_OT_NAME_ID_DESIGNER -+HB_OT_NAME_ID_DESCRIPTION -+HB_OT_NAME_ID_VENDOR_URL -+HB_OT_NAME_ID_DESIGNER_URL -+HB_OT_NAME_ID_LICENSE -+HB_OT_NAME_ID_LICENSE_URL -+HB_OT_NAME_ID_TYPOGRAPHIC_FAMILY -+HB_OT_NAME_ID_TYPOGRAPHIC_SUBFAMILY -+HB_OT_NAME_ID_MAC_FULL_NAME -+HB_OT_NAME_ID_SAMPLE_TEXT -+HB_OT_NAME_ID_CID_FINDFONT_NAME -+HB_OT_NAME_ID_WWS_FAMILY -+HB_OT_NAME_ID_WWS_SUBFAMILY -+HB_OT_NAME_ID_LIGHT_BACKGROUND -+HB_OT_NAME_ID_DARK_BACKGROUND -+HB_OT_NAME_ID_VARIATIONS_PS_PREFIX -+hb_ot_name_entry_t -+hb_ot_name_list_names() -+hb_ot_name_get_utf8() -+hb_ot_name_get_utf16() -+hb_ot_name_get_utf32() - - -Overview of changes leading to 2.0.2 -Saturday, October 20, 2018 -==================================== -- Fix two minor memory access issues in AAT tables. - - -Overview of changes leading to 2.0.1 -Friday, October 19, 2018 -==================================== -- Fix hb-version.h reported release version that went wrong (1.8.0) - with previous release. -- Fix extrapolation in 'trak' table. -- Fix hb-font infinite-recursion issue with some font funcs and - subclassed fonts. -- Implement variation-kerning format in kerx table, although without - variation. -- Fix return value of hb_map_is_empty(). - - -Overview of changes leading to 2.0.0 -Thursday, October 18, 2018 -==================================== -- Added AAT shaping support (morx/kerx/trak). - Automatically used if GSUB/GPOS are not available respectively. - Set HB_OPTIONS=aat env var to have morx/kerx preferred over - GSUB/GPOS. -- Apply TrueType kern table internally, instead of relying on - hb_font_t callbacks. -- Khmer shaper significantly rewritten to better match Uniscribe. -- Indic3 tags ('dev3', etc) are passed to USE shaper. -- .dfont Mac font containers implemented. -- Script- and language-mapping revamped to better use BCP 47. -- Misc USE and Indic fixes. -- Misc everything fixes. -- Too many things to list. Biggest release since 0.9.1, with - over 500 commits in just over 5 weeks! Didn't intend it to - be a big release. Just happened to become. -- hb-ft now locks underlying FT_Face during use. - -API changes: - -- Newly-created hb_font_t's now have our internal "hb-ot-font" - callbacks set on them, so they should work out of the box - without any callbacks set. If callbacks are set, everything - is back to what it was before, the fallback callbacks are - null. If you to get the internal implementation modified, - sub_font it. - -- New hb_font_funcs_set_nominal_glyphs_func() allows speeding - up character to glyph mapping. - -New API: -+HB_FEATURE_GLOBAL_START -+HB_FEATURE_GLOBAL_END -+hb_buffer_set_invisible_glyph() -+hb_buffer_get_invisible_glyph() -+hb_font_funcs_set_nominal_glyphs_func() -+hb_ot_layout_table_select_script() -+hb_ot_layout_script_select_language() -+hb_ot_layout_feature_get_name_ids() -+hb_ot_layout_feature_get_characters() -+hb_name_id_t -+HB_NAME_ID_INVALID -+HB_OT_MAX_TAGS_PER_SCRIPT -+hb_ot_tags_from_script_and_language() -+hb_ot_tags_to_script_and_language() - -Deprecated API: --hb_font_funcs_set_glyph_func() --hb_unicode_eastasian_width_func_t --hb_unicode_funcs_set_eastasian_width_func() --hb_unicode_eastasian_width() --hb_unicode_decompose_compatibility_func_t --HB_UNICODE_MAX_DECOMPOSITION_LEN --hb_unicode_funcs_set_decompose_compatibility_func() --hb_unicode_decompose_compatibility() --hb_font_funcs_set_glyph_h_kerning_func() --hb_font_funcs_set_glyph_v_kerning_func() --hb_font_get_glyph_h_kerning() --hb_font_get_glyph_v_kerning() --hb_font_get_glyph_kerning_for_direction() --hb_ot_layout_table_choose_script() --hb_ot_layout_script_find_language() --hb_ot_tags_from_script() --hb_ot_tag_from_language() - - -Overview of changes leading to 1.9.0 -Monday, September 10, 2018 -==================================== -- Added 'cmap' API to hb_face_t. -- Face-builder API. -- hb-ot-font re-creation should be much leaner now, as the - font tables it uses are cached on hb_face_t now. -- Internal source header file name changes: - hb-*-private.hh is renamed to hb-*.hh. - -New API: -+HB_UNICODE_MAX -+hb_face_collect_unicodes() -+hb_face_collect_variation_selectors() -+hb_face_collect_variation_unicodes() -+hb_face_builder_create() -+hb_face_builder_add_table() - - -Overview of changes leading to 1.8.8 -Tuesday, August 14, 2018 -==================================== -- Fix hb-icu crash on architectures where compare_exchange_weak() can - fail falsely. This bug was introduced in 1.8.4. - https://bugs.chromium.org/p/chromium/issues/detail?id=873568 -- More internal refactoring of atomic operations and singletons. -- API changes: - The following functions do NOT reference their return value before - returning: - * hb_unicode_funcs_get_default() - * hb_glib_get_unicode_funcs() - * hb_icu_get_unicode_funcs() - This is consistent with their naming ("get", instead of "reference") - as well as how they are used in the wild (ie. no one calls destroy() - on their return value.) - - -Overview of changes leading to 1.8.7 -Wednesday, August 8, 2018 -==================================== -- Fix assertion failure with GDEF-blacklisted fonts. - - -Overview of changes leading to 1.8.6 -Tuesday, August 7, 2018 -==================================== -- Internal code shuffling. -- New API to speed up getting advance widths for implementations - that have heavy overhead in get_h_advance callback: -+hb_font_funcs_set_glyph_h_advances_func -+hb_font_funcs_set_glyph_v_advances_func -+hb_font_get_glyph_advances_for_direction -+hb_font_get_glyph_h_advances -+hb_font_get_glyph_h_advances_func_t -+hb_font_get_glyph_v_advances -+hb_font_get_glyph_v_advances_func_t - - -Overview of changes leading to 1.8.5 -Wednesday, August 1, 2018 -==================================== -- Major Khmer shaper improvements to better match Microsoft. -- Indic bug fixes. -- Internal improvements to atomic operations. - - -Overview of changes leading to 1.8.4 -Tuesday, July 17, 2018 -==================================== -- Fix build on non-C++11. -- Use C++-style GCC atomics and C++11 atomics. - - -Overview of changes leading to 1.8.3 -Wednesday, July 11, 2018 -==================================== -- A couple of Indic / USE bug fixes. -- Disable vectorization, as it was causing unaligned access bus error on - certain 32bit architectures. - - -Overview of changes leading to 1.8.2 -Tuesday, July 3, 2018 -==================================== -- Fix infinite loop in Khmer shaper. -- Improve hb_blob_create_from_file() for streams. - - -Overview of changes leading to 1.8.1 -Tuesday, June 12, 2018 -==================================== -- Fix hb-version.h file generation; last two releases went out with wrong ones. -- Add correctness bug in hb_set_t operations, introduced in 1.7.7. -- Remove HB_SUBSET_BUILTIN build option. Not necessary. - - -Overview of changes leading to 1.8.0 -Tuesday, June 5, 2018 -==================================== -- Update to Unicode 11.0.0. - - -Overview of changes leading to 1.7.7 -Tuesday, June 5, 2018 -==================================== -- Lots of internal changes, but not yet exposed externally. -- All HarfBuzz objects are significantly smaller in size now. -- Sinhala: Position repha on top of post-consonant, not base. - This better matches Windows 10 behavior, which was changed - from previous Windows versions. -- New build options: - o New cpp macro HB_NO_ATEXIT - o New cpp macro HB_SUBSET_BUILTIN -- Significant libharfbuzz-subset changes. API subject to change. -- New API in libharfbuzz: - -+hb_blob_create_from_file() -+hb_face_count() - -A hashmap implementation: -+hb-map.h -+HB_MAP_VALUE_INVALID -+hb_map_t -+hb_map_create() -+hb_map_get_empty() -+hb_map_reference() -+hb_map_destroy() -+hb_map_set_user_data() -+hb_map_get_user_data() -+hb_map_allocation_successful() -+hb_map_clear() -+hb_map_is_empty() -+hb_map_get_population() -+hb_map_set() -+hb_map_get() -+hb_map_del() -+hb_map_has() - - -Overview of changes leading to 1.7.6 -Wednesday, March 7, 2018 -==================================== - -- Fix to hb_set_t binary operations. Ouch. -- New experimental harfbuzz-subset library. All of hb-subset.h - is experimental right now and API WILL change. - -- New API: -hb_blob_copy_writable_or_fail() -HB_OT_TAG_BASE -hb_set_previous() -hb_set_previous_range() - - -Overview of changes leading to 1.7.5 -Tuesday, January 30, 2018 -==================================== - -- Separate Khmer shaper from Indic. -- First stab at AAT morx. Not hooked up. -- Misc bug fixes. - - -Overview of changes leading to 1.7.4 -Wednesday, December 20, 2017 -==================================== - -- Fix collect_glyphs() regression caused by hb_set_t changes. - - -Overview of changes leading to 1.7.3 -Monday, December 18, 2017 -==================================== - -- hb_set_t performance tuning and optimizations. -- Speed up collect_glyphs() and reject garbage data. -- In hb_coretext_font_create() set font point-size (ptem). -- Misc fixes. - - -Overview of changes leading to 1.7.2 -Monday, December 4, 2017 -==================================== - -- Optimize hb_set_add_range(). -- Misc fixes. -- New API: -hb_coretext_font_create() - - -Overview of changes leading to 1.7.1 -Tuesday, November 14, 2017 -==================================== - -- Fix atexit object destruction regression. -- Fix minor integer-overflow. - - -Overview of changes leading to 1.7.0 -Monday, November 13, 2017 -==================================== - -- Minor Indic fixes. -- Implement kerning and glyph names in hb-ot-font. -- Various DSO optimization re .data and .bss sizes. -- Make C++11 optional; build fixes. -- Mark all other backends "unsafe-to-break". -- Graphite fix. - - -Overview of changes leading to 1.6.3 -Thursday, October 26th, 2017 -==================================== - -- Fix hb_set_t some more. Should be solid now. -- Implement get_glyph_name() for hb-ot-font. -- Misc fixes. - - -Overview of changes leading to 1.6.2 -Monday, October 23nd, 2017 -==================================== - -- Yesterday's release had a bad crasher; don't use it. That's what - happens when one works on Sunday... - https://github.com/harfbuzz/harfbuzz/issues/578 -- Build fixes for FreeBSD and Chrome Android. - - -Overview of changes leading to 1.6.1 -Sunday, October 22nd, 2017 -==================================== - -- Don't skip over COMBINING GRAPHEME JOINER when ligating, etc. - To be refined: https://github.com/harfbuzz/harfbuzz/issues/554 -- Faster hb_set_t implementation. -- Don't use deprecated ICU API. -- Fix undefined-behavior in Myanmar shaper, introduced in 1.6.0 -- Deprecated API: - hb_set_invert() - - -Overview of changes leading to 1.6.0 -Friday, October the 13th, 2017 -==================================== - -- Update to Unicode 10. - -- Various Indic and Universal Shaping Engine fixes as a result of - HarfBuzz Hackfest with Jonathan Kew at Web Engines Hackfest at - the Igalia offices in A Coruña, Spain. Thanks Igalia for having - us! - -- Implement Unicode Arabic Mark Ordering Algorithm UTR#53. - -- Implement optical sizing / tracking in CoreText backend, using - new API hb_font_set_ptem(). - -- Allow notifying hb_font_t that underlying FT_Face changed sizing, - using new API hb_ft_font_changed(). - -- More Graphite backend RTL fixes. - -- Fix caching of variable font shaping plans. - -- hb-view / hb-shape now accept following new arguments: - - o --unicodes: takes a list of hex numbers that represent Unicode - codepoints. - -New API: -+hb_face_get_table_tags() -+hb_font_set_ptem() -+hb_font_get_ptem() -+hb_ft_font_changed() - - -Overview of changes leading to 1.5.1 -Tuesday, September 5, 2017 -==================================== - -- Fix "unsafe-to-break" in fallback shaping and other corner cases. - All our tests pass with --verify now, meaning unsafe-to-break API - works as expected. -- Add --unicodes to hb-view / hb-shape. -- [indic] Treat Consonant_With_Stacker as consonant. This will need - further tweaking. -- hb_buffer_diff() tweaks. - - -Overview of changes leading to 1.5.0 -Wednesday, August 23, 2017 -==================================== - -- Misc new API, for appending a buffer to another, and for comparing - contents of two buffers for types of differences. - -- New "unsafe-to-break" API. Can be used to speed up reshaping - in line-breaking situations. Essentially, after shaping, it returns - positions in the input string (some of the cluster boundaries) that - are "safe to break" in that if the text is segmented at that position - and two sides reshaped and concatenated, the shaping result is - exactly the same as shaping the text in one piece. - - hb-view and hb-shape and hb-shape now take --verify, which verifies - the above property. - - Some corner cases of the implementation are still not quite working. - Those will be fixed in subsequent releases. - -- New API: - -hb_buffer_append() - -hb_glyph_flags_t -HB_GLYPH_FLAG_UNSAFE_TO_BREAK -HB_GLYPH_FLAG_DEFINED -hb_glyph_info_get_glyph_flags() - -HB_BUFFER_SERIALIZE_FLAG_GLYPH_FLAGS - -hb_buffer_diff_flags_t -HB_BUFFER_DIFF_FLAG_EQUAL -HB_BUFFER_DIFF_FLAG_CONTENT_TYPE_MISMATCH -HB_BUFFER_DIFF_FLAG_LENGTH_MISMATCH -HB_BUFFER_DIFF_FLAG_NOTDEF_PRESENT -HB_BUFFER_DIFF_FLAG_DOTTED_CIRCLE_PRESENT -HB_BUFFER_DIFF_FLAG_CODEPOINT_MISMATCH -HB_BUFFER_DIFF_FLAG_CLUSTER_MISMATCH -HB_BUFFER_DIFF_FLAG_GLYPH_FLAGS_MISMATCH -HB_BUFFER_DIFF_FLAG_POSITION_MISMATCH -hb_buffer_diff - - -Overview of changes leading to 1.4.8 -Tuesday, August 8, 2017 -==================================== - -- Major fix to avar table handling. -- Rename hb-shape --show-message to --trace. -- Build fixes. - - -Overview of changes leading to 1.4.7 -Tuesday, July 18, 2017 -==================================== - -- Multiple Indic, Tibetan, and Cham fixes. -- CoreText: Allow disabling kerning. -- Adjust Arabic feature order again. -- Misc build fixes. - - -Overview of changes leading to 1.4.6 -Sunday, April 23, 2017 -==================================== - -- Graphite2: Fix RTL positioning issue. -- Backlist GDEF of more versions of Padauk and Tahoma. -- New, experimental, cmake alternative build system. - - -Overview of changes leading to 1.4.5 -Friday, March 10, 2017 -==================================== - -- Revert "Fix Context lookup application when moving back after a glyph..." - This introduced memory access problems. To be fixed properly soon. - - -Overview of changes leading to 1.4.4 -Sunday, March 5, 2017 -==================================== - -- Fix Context lookup application when moving back after a glyph deletion. -- Fix buffer-overrun in Bengali. - - -Overview of changes leading to 1.4.3 -Saturday, February 25, 2017 -==================================== - -- Route Adlam script to Arabic shaper. -- Misc fixes. -- New API: - hb_font_set_face() -- Deprecate API: - hb_graphite2_font_get_gr_font() - - -Overview of changes leading to 1.4.2 -Monday, January 23, 2017 -==================================== - -- Implement OpenType Font Variation tables avar/fvar/HVAR/VVAR. -- hb-shape and hb-view now accept --variations. -- New API: - -hb_variation_t -hb_variation_from_string() -hb_variation_to_string() - -hb_font_set_variations() -hb_font_set_var_coords_design() -hb_font_get_var_coords_normalized() - -hb-ot-var.h: -hb_ot_var_axis_t -hb_ot_var_has_data() -hb_ot_var_get_axis_count() -hb_ot_var_get_axes() -hb_ot_var_find_axis() -hb_ot_var_normalize_variations() -hb_ot_var_normalize_coords() - -- MVAR to be implemented later. Access to named instances to be - implemented later as well. - -- Misc fixes. - - -Overview of changes leading to 1.4.1 -Thursday, January 5, 2017 -==================================== - -- Always build and use UCDN for Unicode data by default. - Reduces dependence on version of Unicode data in glib, - specially in the Windows bundles we are shipping, which - have very old glib. - - -Overview of changes leading to 1.4.0 -Thursday, January 5, 2017 -==================================== - -- Merged "OpenType GX" branch which adds core of support for - OpenType 1.8 Font Variations. To that extent, the relevant - new API is: - -New API: -hb_font_set_var_coords_normalized() - - with supporting API: - -New API: -HB_OT_LAYOUT_NO_VARIATIONS_INDEX -hb_ot_layout_table_find_feature_variations() -hb_ot_layout_feature_with_variations_get_lookups() -hb_shape_plan_create2() -hb_shape_plan_create_cached2() - - Currently variations in GSUB/GPOS/GDEF are fully supported, - and no other tables are supported. In particular, fvar/avar - are NOT supported, hence the hb_font_set_var_coords_normalized() - taking normalized coordinates. API to take design coordinates - will be added in the future. - - HVAR/VVAR/MVAR support will also be added to hb-ot-font in the - future. - -- Fix regression in GDEF glyph class processing. -- Add decompositions for Chakma, Limbu, and Balinese in USE shaper. -- Misc fixes. - - -Overview of changes leading to 1.3.4 -Monday, December 5, 2016 -==================================== - -- Fix vertical glyph origin in hb-ot-font. -- Implement CBDT/CBLC color font glyph extents in hb-ot-font. - - -Overview of changes leading to 1.3.3 -Wednesday, September 28, 2016 -==================================== - -- Implement parsing of OpenType MATH table. -New API: -HB_OT_TAG_MATH -HB_OT_MATH_SCRIPT -hb_ot_math_constant_t -hb_ot_math_kern_t -hb_ot_math_glyph_variant_t -hb_ot_math_glyph_part_flags_t -hb_ot_math_glyph_part_t -hb_ot_math_has_data -hb_ot_math_get_constant -hb_ot_math_get_glyph_italics_correction -hb_ot_math_get_glyph_top_accent_attachment -hb_ot_math_get_glyph_kerning -hb_ot_math_is_glyph_extended_shape -hb_ot_math_get_glyph_variants -hb_ot_math_get_min_connector_overlap -hb_ot_math_get_glyph_assembly - - -Overview of changes leading to 1.3.2 -Wednesday, September 27, 2016 -==================================== - -- Fix build of hb-coretext on older OS X versions. - - -Overview of changes leading to 1.3.1 -Wednesday, September 7, 2016 -==================================== - -- Blacklist bad GDEF of more fonts (Padauk). -- More CoreText backend crash fixes with OS X 10.9.5. -- Misc fixes. - - -Overview of changes leading to 1.3.0 -Thursday, July 21, 2016 -==================================== - -- Update to Unicode 9.0.0 -- Move Javanese from Indic shaper to Universal Shaping Engine. -- Allow MultipleSubst to delete a glyph (matching Windows engine). -- Update Universal Shaping Engine to latest draft from Microsoft. -- DirectWrite backend improvements. Note: this backend is for testing ONLY. -- CoreText backend improvements with unreachable fonts. -- Implement symbol fonts (cmap 3.0.0) in hb-ft and hb-ot-font. -- Blacklist bad GDEF of more fonts (Tahoma & others). -- Misc fixes. - - -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/harfbuzz/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/harfbuzz/harfbuzz/issues/211 - https://github.com/harfbuzz/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/harfbuzz/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/harfbuzz/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/harfbuzz/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/harfbuzz/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/harfbuzz/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 -===================================== - -- Another hb-coretext crasher fix. Ouch! -- Happy Norouz! - - -Overview of changes leading to 0.9.39 -Wednesday, March 4, 2015 -===================================== - -- Critical hb-coretext fixes. -- Optimizations and refactoring; no functional change - expected. -- Misc build fixes. - - -Overview of changes leading to 0.9.38 -Friday, January 23, 2015 -===================================== - -- Fix minor out-of-bounds access in Indic shaper. -- Change New Tai Lue shaping engine from South-East Asian to default, - reflecting change in Unicode encoding model. -- Add hb-shape --font-size. Can take up to two numbers for separate - x / y size. -- Fix CoreText and FreeType scale issues with negative scales. -- Reject blobs larger than 2GB. This might break some icu-le-hb clients - that need security fixes. See: - http://www.icu-project.org/trac/ticket/11450 -- Avoid accessing font tables during face destruction, in casce rogue - clients released face data already. -- Fix up gobject-introspection a bit. Python bindings kinda working. - See README.python. -- Misc fixes. -- API additions: - hb_ft_face_create_referenced() - hb_ft_font_create_referenced() - - -Overview of changes leading to 0.9.37 -Wednesday, December 17, 2014 -===================================== - -- Fix out-of-bounds access in Context lookup format 3. -- Indic: Allow ZWJ/ZWNJ before syllable modifiers. - - -Overview of changes leading to 0.9.36 -Thursday, November 20, 2014 -===================================== - -- First time that three months went by without a release since - 0.9.2 was released on August 10, 2012! -- Fix performance bug in hb_ot_collect_glyphs(): - https://bugzilla.mozilla.org/show_bug.cgi?id=1090869 -- Add basic vertical-text support to hb-ot-font. -- Misc build fixes. - - -Overview of changes leading to 0.9.35 -Saturday, August 13, 2014 -===================================== - -- Fix major shape-plan caching bug when more than one shaper were - provided to hb_shape_full() (as exercised by XeTeX). - http://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1246370.html -- Fix Arabic fallback shaping regression. This was broken in 0.9.32. -- Major hb-coretext fixes. That backend is complete now, including - respecing buffer direction and language, down to vertical writing. -- Build fixes for Windows CE. Should build fine now. -- Misc fixes: - Use atexit() only if it's safe to call from shared library - https://bugs.freedesktop.org/show_bug.cgi?id=82246 - Mandaic had errors in its Unicode Joining_Type - https://bugs.freedesktop.org/show_bug.cgi?id=82306 -- API changes: - - * hb_buffer_clear_contents() does not reset buffer flags now. - - After 763e5466c0a03a7c27020e1e2598e488612529a7, one doesn't - need to set flags for different pieces of text. The flags now - are something the client sets up once, depending on how it - actually uses the buffer. As such, don't clear it in - clear_contents(). - - I don't expect any changes to be needed to any existing client. - - -Overview of changes leading to 0.9.34 -Saturday, August 2, 2014 -===================================== - -- hb_feature_from_string() now accepts CSS font-feature-settings format. -- As a result, hb-shape / hb-view --features also accept CSS-style strings. - Eg, "'liga' off" is accepted now. -- Add old-spec Myanmar shaper: - https://bugs.freedesktop.org/show_bug.cgi?id=81775 -- Don't apply 'calt' in Hangul shaper. -- Fix mark advance zeroing for Hebrew shaper: - https://bugs.freedesktop.org/show_bug.cgi?id=76767 -- Implement Windows-1256 custom Arabic shaping. Only built on Windows, - and requires help from get_glyph(). Used by Firefox. - https://bugzilla.mozilla.org/show_bug.cgi?id=1045139 -- Disable 'liga' in vertical text. -- Build fixes. -- API changes: - - * Make HB_BUFFER_FLAG_BOT/EOT easier to use. - - Previously, we expected users to provide BOT/EOT flags when the - text *segment* was at paragraph boundaries. This meant that for - clients that provide full paragraph to HarfBuzz (eg. Pango), they - had code like this: - - hb_buffer_set_flags (hb_buffer, - (item_offset == 0 ? HB_BUFFER_FLAG_BOT : 0) | - (item_offset + item_length == paragraph_length ? - HB_BUFFER_FLAG_EOT : 0)); - - hb_buffer_add_utf8 (hb_buffer, - paragraph_text, paragraph_length, - item_offset, item_length); - - After this change such clients can simply say: - - hb_buffer_set_flags (hb_buffer, - HB_BUFFER_FLAG_BOT | HB_BUFFER_FLAG_EOT); - - hb_buffer_add_utf8 (hb_buffer, - paragraph_text, paragraph_length, - item_offset, item_length); - - Ie, HarfBuzz itself checks whether the segment is at the beginning/end - of the paragraph. Clients that only pass item-at-a-time to HarfBuzz - continue not setting any flags whatsoever. - - Another way to put it is: if there's pre-context text in the buffer, - HarfBuzz ignores the BOT flag. If there's post-context, it ignores - EOT flag. - - -Overview of changes leading to 0.9.33 -Tuesday, July 22, 2014 -===================================== - -- Turn off ARabic 'cswh' feature that was accidentally turned on. -- Add HB_TAG_MAX_SIGNED. -- Make hb_face_make_immutable() really make face immutable! -- Windows build fixes. - - -Overview of changes leading to 0.9.32 -Thursday, July 17, 2014 -===================================== - -- Apply Arabic shaping features in spec order exactly. -- Another fix for Mongolian free variation selectors. -- For non-Arabic scripts in Arabic shaper apply 'rlig' and 'calt' - together. -- Minor adjustment to U+FFFD logic. -- Fix hb-coretext build. - - -Overview of changes leading to 0.9.31 -Wednesday, July 16, 2014 -===================================== - -- Only accept valid UTF-8/16/32; we missed many cases before. -- Better shaping of invalid UTF-8/16/32. Falls back to - U+FFFD REPLACEMENT CHARACTER now. -- With all changes in this release, the buffer will contain fully - valid Unicode after hb_buffer_add_utf8/16/32 no matter how - broken the input is. This can be overridden though. See below. -- Fix Mongolian Variation Selectors for fonts without GDEF. -- Fix minor invalid buffer access. -- Accept zh-Hant and zh-Hans language tags. hb_ot_tag_to_language() - now uses these instead of private tags. -- Build fixes. -- New API: - * hb_buffer_add_codepoints(). This does what hb_buffer_add_utf32() - used to do, ie. no validity check on the input at all. add_utf32 - now replaces invalid Unicode codepoints with the replacement - character (see below). - * hb_buffer_set_replacement_codepoint() - * hb_buffer_get_replacement_codepoint() - Previously, in hb_buffer_add_utf8 and hb_buffer_add_utf16, when - we detected broken input, we replaced that with (hb_codepoint_t)-1. - This has changed to use U+FFFD now, but can be changed using these - new API. - - -Overview of changes leading to 0.9.30 -Wednesday, July 9, 2014 -===================================== - -- Update to Unicode 7.0.0: - * New scripts Manichaean and Psalter Pahlavi are shaped using - Arabic shaper. - * All the other new scripts to through the generic shaper for - now. -- Minor Indic improvements. -- Fix graphite2 backend cluster mapping [crasher!] -- API changes: - * New HB_SCRIPT_* values for Unicode 7.0 scripts. - * New function hb_ot_layout_language_get_required_feature(). -- Build fixes. - - -Overview of changes leading to 0.9.29 -Thursday, May 29, 2014 -===================================== - -- Implement cmap in hb-ot-font.h. No variation-selectors yet. -- Myanmar: Allow MedialYa+Asat. -- Various Indic fixes: - * Support most characters in Extended Devanagary and Vedic - Unicode blocks. - * Allow digits and a some punctuation as consonant placeholders. -- Build fixes. - - -Overview of changes leading to 0.9.28 -Monday, April 28, 2014 -===================================== - -- Unbreak old-spec Indic shaping. (bug 76705) -- Fix shaping of U+17DD and U+0FC6. -- Add HB_NO_MERGE_CLUSTERS build option. NOT to be enabled by default - for shipping libraries. It's an option for further experimentation - right now. When we are sure how to do it properly, we will add - public run-time API for the functionality. -- Build fixes. - - -Overview of changes leading to 0.9.27 -Tuesday, March 18, 2014 -===================================== - -- Don't use "register" storage class specifier -- Wrap definition of free_langs() with HAVE_ATEXIT -- Add coretext_aat shaper and hb_coretext_face_create() constructor -- If HAVE_ICU_BUILTIN is defined, use hb-icu Unicode callbacks -- Add Myanmar test case from OpenType Myanmar spec -- Only do fallback Hebrew composition if no GPOS 'mark' available -- Allow bootstrapping without gtk-doc -- Use AM_MISSING_PROG for ragel and git -- Typo in ucdn's Makefile.am -- Improve MemoryBarrier() implementation - - -Overview of changes leading to 0.9.26 -Thursday, January 30, 2014 -===================================== - -- Misc fixes. -- Fix application of 'rtlm' feature. -- Automatically apply frac/numr/dnom around U+2044 FRACTION SLASH. -- New header: hb-ot-shape.h -- Uniscribe: fix scratch-buffer accounting. -- Reorder Tai Tham SAKOT to after tone-marks. -- Add Hangul shaper. -- New files: - hb-ot-shape-complex-hangul.cc - hb-ot-shape-complex-hebrew.cc - hb-ot-shape-complex-tibetan.cc -- Disable 'cswh' feature in Arabic shaper. -- Coretext: better handle surrogate pairs. -- Add HB_TAG_MAX and _HB_SCRIPT_MAX_VALUE. - - -Overview of changes leading to 0.9.25 -Wednesday, December 4, 2013 -===================================== - -- Myanmar shaper improvements. -- Avoid font fallback in CoreText backend. -- Additional OpenType language tag mappiongs. -- More aggressive shape-plan caching. -- Build with / require automake 1.13. -- Build with libtool 2.4.2.418 alpha to support ppc64le. - - -Overview of changes leading to 0.9.24 -Tuesday, November 13, 2013 -===================================== - -- Misc compiler warning fixes with clang. -- No functional changes. - - -Overview of changes leading to 0.9.23 -Monday, October 28, 2013 -===================================== - -- "Udupi HarfBuzz Hackfest", Paris, October 14..18 2013. -- Fix (Chain)Context recursion with non-monotone lookup positions. -- Misc Indic bug fixes. -- New Javanese / Buginese shaping, similar to Windows 8.1. - - -Overview of changes leading to 0.9.22 -Thursday, October 3, 2013 -===================================== - -- Fix use-after-end-of-scope in hb_language_from_string(). -- Fix hiding of default_ignorables if font doesn't have space glyph. -- Protect against out-of-range lookup indices. - -- API Changes: - - * Added hb_ot_layout_table_get_lookup_count() - - -Overview of changes leading to 0.9.21 -Monday, September 16, 2013 -===================================== - -- Rename gobject-introspection library name from harfbuzz to HarfBuzz. -- Remove (long disabled) hb-old and hb-icu-le test shapers. -- Misc gtk-doc and gobject-introspection annotations. -- Misc fixes. -- API changes: - - * Add HB_SET_VALUE_INVALID - -Overview of changes leading to 0.9.20 -Thursday, August 29, 2013 -===================================== - -General: -- Misc substitute_closure() fixes. -- Build fixes. - -Documentation: -- gtk-doc boilerplate integrated. Docs are built now, but - contain no contents. By next release hopefully we have - some content in. Enable using --enable-gtk-doc. - -GObject and Introspection: -- Added harfbuzz-gobject library (hb-gobject.h) that has type - bindings for all HarfBuzz objects and enums. Enable using - --with-gobject. -- Added gobject-introspection boilerplate. Nothing useful - right now. Work in progress. Gets enabled automatically if - --with-gobject is used. Override with --disable-introspection. - -OpenType shaper: -- Apply 'mark' in Myanmar shaper. -- Don't apply 'dlig' by default. - -Uniscribe shaper: -- Support user features. -- Fix loading of fonts that are also installed on the system. -- Fix shaping of Arabic Presentation Forms. -- Fix build with wide chars. - -CoreText shaper: -- Support user features. - -Source changes: -- hb_face_t code moved to hb-face.h / hb-face.cc. -- Added hb-deprecated.h. - -API changes: -- Added HB_DISABLE_DEPRECATED. -- Deprecated HB_SCRIPT_CANADIAN_ABORIGINAL; replaced by - HB_SCRIPT_CANADIAN_SYLLABICS. -- Deprecated HB_BUFFER_FLAGS_DEFAULT; replaced by - HB_BUFFER_FLAG_DEFAULT. -- Deprecated HB_BUFFER_SERIALIZE_FLAGS_DEFAULT; replaced by - HB_BUFFER_SERIALIZE_FLAG_DEFAULT. - - -Overview of changes leading to 0.9.19 -Tuesday, July 16, 2013 -===================================== - -- Build fixes. -- Better handling of multiple variation selectors in a row. -- Pass on variation selector to GSUB if not consumed by cmap. -- Fix undefined memory access. -- Add Javanese config to Indic shaper. -- Misc bug fixes. - -Overview of changes leading to 0.9.18 -Tuesday, May 28, 2013 -===================================== - -New build system: - -- All unneeded code is all disabled by default, - -- Uniscribe and CoreText shapers can be enabled with their --with options, - -- icu_le and old shapers cannot be enabled for now, - -- glib, freetype, and cairo will be detected automatically. - They can be force on/off'ed with their --with options, - -- icu and graphite2 are default off, can be enabled with their --with - options, - -Moreover, ICU support is now build into a separate library: -libharfbuzz-icu.so, and a new harfbuzz-icu.pc is shipped for it. -Distros can enable ICU now without every application on earth -getting linked to via libharfbuzz.so. - -For distros I recommend that they make sure they are building --with-glib ---with-freetype --with-cairo, --with-icu, and optionally --with-graphite2; -And package harfbuzz and harfbuzz-icu separately. - - -Overview of changes leading to 0.9.17 -Monday, May 20, 2013 -===================================== - -- Build fixes. -- Fix bug in hb_set_get_min(). -- Fix regression with Arabic mark positioning / width-zeroing. - -Overview of changes leading to 0.9.16 -Friday, April 19, 2013 -===================================== - -- Major speedup in OpenType lookup processing. With the Amiri - Arabic font, this release is over 3x faster than previous - release. All scripts / languages should see this speedup. - -- New --num-iterations option for hb-shape / hb-view; useful for - profiling. - -Overview of changes leading to 0.9.15 -Friday, April 05, 2013 -===================================== - -- Build fixes. -- Fix crasher in graphite2 shaper. -- Fix Arabic mark width zeroing regression. -- Don't compose Hangul jamo into Unicode syllables. - - -Overview of changes leading to 0.9.14 -Thursday, March 21, 2013 -===================================== - -- Build fixes. -- Fix time-consuming sanitize with malicious fonts. -- Implement hb_buffer_deserialize_glyphs() for both json and text. -- Do not ignore Hangul filler characters. -- Indic fixes: - * Fix Malayalam pre-base reordering interaction with post-forms. - * Further adjust ZWJ handling. Should fix known regressions from - 0.9.13. - - -Overview of changes leading to 0.9.13 -Thursday, February 25, 2013 -===================================== - -- Build fixes. -- Ngapi HarfBuzz Hackfest in London (February 2013): - * Fixed all known Indic bugs, - * New Win8-style Myanmar shaper, - * New South-East Asian shaper for Tai Tham, Cham, and New Tai Lue, - * Smartly ignore Default_Ignorable characters (joiners, etc) wheb - matching GSUB/GPOS lookups, - * Fix 'Phags-Pa U+A872 shaping, - * Fix partial disabling of default-on features, - * Allow disabling of TrueType kerning. -- Fix possible crasher with broken fonts with overlapping tables. -- Removed generated files from git again. So, one needs ragel to - bootstrap from the git tree. - -API changes: -- hb_shape() and related APIs now abort if buffer direction is - HB_DIRECTION_INVALID. Previously, hb_shape() was calling - hb_buffer_guess_segment_properties() on the buffer before - shaping. The heuristics in that function are fragile. If the - user really wants the old behvaior, they can call that function - right before calling hb_shape() to get the old behavior. -- hb_blob_create_sub_blob() always creates sub-blob with - HB_MEMORY_MODE_READONLY. See comments for the reason. - - -Overview of changes leading to 0.9.12 -Thursday, January 18, 2013 -===================================== - -- Build fixes for Sun compiler. -- Minor bug fix. - -Overview of changes leading to 0.9.11 -Thursday, January 10, 2013 -===================================== - -- Build fixes. -- Fix GPOS mark attachment with null Anchor offsets. -- [Indic] Fix old-spec reordering of viramas if sequence ends in one. -- Fix multi-threaded shaper data creation crash. -- Add atomic ops for Solaris. - -API changes: -- Rename hb_buffer_clear() to hb_buffer_clear_contents(). - - -Overview of changes leading to 0.9.10 -Thursday, January 3, 2013 -===================================== - -- [Indic] Fixed rendering of Malayalam dot-reph -- Updated OT language tags. -- Updated graphite2 backend. -- Improved hb_ot_layout_get_size_params() logic. -- Improve hb-shape/hb-view help output. -- Fixed hb-set.h implementation to not crash. -- Fixed various issues with hb_ot_layout_collect_lookups(). -- Various build fixes. - -New API: - -hb_graphite2_face_get_gr_face() -hb_graphite2_font_get_gr_font() -hb_coretext_face_get_cg_font() - -Modified API: - -hb_ot_layout_get_size_params() - - -Overview of changes leading to 0.9.9 -Wednesday, December 5, 2012 -==================================== - -- Fix build on Windows. -- Minor improvements. - - -Overview of changes leading to 0.9.8 -Tuesday, December 4, 2012 -==================================== - - -- Actually implement hb_shape_plan_get_shaper (). -- Make UCDB data tables const. -- Lots of internal refactoring in OTLayout tables. -- Flesh out hb_ot_layout_lookup_collect_glyphs(). - -New API: - -hb_ot_layout_collect_lookups() -hb_ot_layout_get_size_params() - - -Overview of changes leading to 0.9.7 -Sunday, November 21, 2012 -==================================== - - -HarfBuzz "All-You-Can-Eat-Sushi" (aka Vancouver) Hackfest and follow-on fixes. - -- Fix Arabic contextual joining using pre-context text. -- Fix Sinhala "split matra" mess. -- Fix Khmer shaping with broken fonts. -- Implement Thai "PUA" shaping for old fonts. -- Do NOT route Kharoshthi script through the Indic shaper. -- Disable fallback positioning for Indic and Thai shapers. -- Misc fixes. - - -hb-shape / hb-view changes: - -- Add --text-before and --text-after -- Add --bot / --eot / --preserve-default-ignorables -- hb-shape --output-format=json - - -New API: - -hb_buffer_clear() - -hb_buffer_flags_t - -HB_BUFFER_FLAGS_DEFAULT -HB_BUFFER_FLAG_BOT -HB_BUFFER_FLAG_EOT -HB_BUFFER_FLAG_PRESERVE_DEFAULT_IGNORABLES - -hb_buffer_set_flags() -hb_buffer_get_flags() - -HB_BUFFER_SERIALIZE_FLAGS -hb_buffer_serialize_glyphs() -hb_buffer_deserialize_glyphs() -hb_buffer_serialize_list_formats() - -hb_set_add_range() -hb_set_del_range() -hb_set_get_population() -hb_set_next_range() - -hb_face_[sg]et_glyph_count() - -hb_segment_properties_t -HB_SEGMENT_PROPERTIES_DEFAULT -hb_segment_properties_equal() -hb_segment_properties_hash() - -hb_buffer_set_segment_properties() -hb_buffer_get_segment_properties() - -hb_ot_layout_glyph_class_t -hb_ot_layout_get_glyph_class() -hb_ot_layout_get_glyphs_in_class() - -hb_shape_plan_t -hb_shape_plan_create() -hb_shape_plan_create_cached() -hb_shape_plan_get_empty() -hb_shape_plan_reference() -hb_shape_plan_destroy() -hb_shape_plan_set_user_data() -hb_shape_plan_get_user_data() -hb_shape_plan_execute() -hb_shape_plan_get_shaper() - -hb_ot_shape_plan_collect_lookups() - - -API changes: - -- Remove "mask" parameter from hb_buffer_add(). -- Rename hb_ot_layout_would_substitute_lookup() and hb_ot_layout_substitute_closure_lookup(). -- hb-set.h API const correction. -- Renamed hb_set_min/max() to hb_set_get_min/max(). -- Rename hb_ot_layout_feature_get_lookup_indexes() to hb_ot_layout_feature_get_lookups(). -- Rename hb_buffer_guess_properties() to hb_buffer_guess_segment_properties(). - - - -Overview of changes leading to 0.9.6 -Sunday, November 13, 2012 -==================================== - -- Don't clear pre-context text if no new context is provided. -- Fix ReverseChainingSubstLookup, which was totally borked. -- Adjust output format of hb-shape a bit. -- Include config.h.in in-tree. Makes it easier for alternate build systems. -- Fix hb_buffer_set_length(buffer, 0) invalid memory allocation. -- Use ICU LayoutEngine's C API instead of C++. Avoids much headache. -- Drop glyphs for all of Unicode Default_Ignorable characters. -- Misc build fixes. - -Arabic shaper: -- Enable 'dlig' and 'mset' features in Arabic shaper. -- Implement 'Phags-pa shaping, improve Mongolian. - -Indic shaper: -- Decompose Sinhala split matras the way old HarfBuzz / Pango did. -- Initial support for Consonant Medials. -- Start adding new-style Myanmar shaping. -- Make reph and 'pref' logic introspect the font. -- Route Meetei-Mayek through the Indic shaper. -- Don't apply 'liga' in Indic shaper. -- Improve Malayalam pre-base reordering Ra interaction with Chillus. - - - -Overview of changes leading to 0.9.5 -Sunday, October 14, 2012 -==================================== - -- Synthetic-GSUB Arabic fallback shaping. - -- Misc Indic improvements. - -- Add build system support for pthread. - -- Imported UCDN for in-tree Unicode callbacks implementation. - -- Context-aware Arabic joining. - -- Misc other fixes. - -- New API: - - hb_feature_to/from-string() - hb_buffer_[sg]et_content_type() - - - -Overview of changes leading to 0.9.4 -Tuesday, Sep 03, 2012 -==================================== - -- Indic improvements with old-spec Malayalam. - -- Better fallback glyph positioning, specially with Thai / Lao marks. - -- Implement dotted-circle insertion. - -- Better Arabic fallback shaping / ligation. - -- Added ICU LayoutEngine backend for testing. Call it by the 'icu_le' name. - -- Misc fixes. - - - -Overview of changes leading to 0.9.3 -Friday, Aug 18, 2012 -==================================== - -- Fixed fallback mark positioning for left-to-right text. - -- Improve mark positioning for the remaining combining classes. - -- Unbreak Thai and fallback Arabic shaping. - -- Port Arabic shaper to shape-plan caching. - -- Use new ICU normalizer functions. - - - -Overview of changes leading to 0.9.2 -Friday, Aug 10, 2012 -==================================== - -- Over a thousand commits! This is the first major release of HarfBuzz. - -- HarfBuzz is feature-complete now! It should be in par, or better, than - both Pango's shapers and old HarfBuzz / Qt shapers. - -- New Indic shaper, supporting main Indic scripts, Sinhala, and Khmer. - -- Improved Arabic shaper, with fallback Arabic shaping, supporting Arabic, - Sinhala, N'ko, Mongolian, and Mandaic. - -- New Thai / Lao shaper. - -- Tibetan / Hangul support in the generic shaper. - -- Synthetic GDEF support for fonts without a GDEF table. - -- Fallback mark positioning for fonts without a GPOS table. - -- Unicode normalization shaping heuristic during glyph mapping. - -- New experimental Graphite2 backend. - -- New Uniscribe backend (primarily for testing). - -- New CoreText backend (primarily for testing). - -- Major optimization and speedup. - -- Test suites and testing infrastructure (work in progress). - -- Greatly improved hb-view cmdline tool. - -- hb-shape cmdline tool. - -- Unicode 6.1 support. - -Summary of API changes: - -o Changed API: - - - Users are expected to only include main header files now (ie. hb.h, - hb-glib.h, hb-ft.h, ...) - - - All struct tag names had their initial underscore removed. - Ie. "struct _hb_buffer_t" is "struct hb_buffer_t" now. - - - All set_user_data() functions now take a "replace" boolean parameter. - - - hb_buffer_create() takes zero arguments now. - Use hb_buffer_pre_allocate() to pre-allocate. - - - hb_buffer_add_utf*() now accept -1 for length parameteres, - meaning "nul-terminated". - - - hb_direction_t enum values changed. - - - All *_from_string() APIs now take a length parameter to allow for - non-nul-terminated strings. A -1 length means "nul-terminated". - - - Typedef for hb_language_t changed. - - - hb_get_table_func_t renamed to hb_reference_table_func_t. - - - hb_ot_layout_table_choose_script() - - - Various renames in hb-unicode.h. - -o New API: - - - hb_buffer_guess_properties() - Automatically called by hb_shape(). - - - hb_buffer_normalize_glyphs() - - - hb_tag_from_string() - - - hb-coretext.h - - - hb-uniscribe.h - - - hb_face_reference_blob() - - hb_face_[sg]et_index() - - hb_face_set_upem() - - - hb_font_get_glyph_name_func_t - hb_font_get_glyph_from_name_func_t - hb_font_funcs_set_glyph_name_func() - hb_font_funcs_set_glyph_from_name_func() - hb_font_get_glyph_name() - hb_font_get_glyph_from_name() - hb_font_glyph_to_string() - hb_font_glyph_from_string() - - - hb_font_set_funcs_data() - - - hb_ft_font_set_funcs() - - hb_ft_font_get_face() - - - hb-gobject.h (work in progress) - - - hb_ot_shape_glyphs_closure() - hb_ot_layout_substitute_closure_lookup() - - - hb-set.h - - - hb_shape_full() - - - hb_unicode_combining_class_t - - - hb_unicode_compose_func_t - hb_unicode_decompose_func_t - hb_unicode_decompose_compatibility_func_t - hb_unicode_funcs_set_compose_func() - hb_unicode_funcs_set_decompose_func() - hb_unicode_funcs_set_decompose_compatibility_func() - hb_unicode_compose() - hb_unicode_decompose() - hb_unicode_decompose_compatibility() - -o Removed API: - - - hb_ft_get_font_funcs() - - - hb_ot_layout_substitute_start() - hb_ot_layout_substitute_lookup() - hb_ot_layout_substitute_finish() - hb_ot_layout_position_start() - hb_ot_layout_position_lookup() - hb_ot_layout_position_finish() - - - -Overview of changes leading to 0.6.0 -Friday, May 27, 2011 -==================================== - -- Vertical text support in GPOS -- Almost all API entries have unit tests now, under test/ -- All thread-safety issues are fixed - -Summary of API changes follows. - - -* Simple Types API: - - o New API: - HB_LANGUAGE_INVALID - hb_language_get_default() - hb_direction_to_string() - hb_direction_from_string() - hb_script_get_horizontal_direction() - HB_UNTAG() - - o Renamed API: - hb_category_t renamed to hb_unicode_general_category_t - - o Changed API: - hb_language_t is a typed pointers now - - o Removed API: - HB_TAG_STR() - - -* Use ISO 15924 tags for hb_script_t: - - o New API: - hb_script_from_iso15924_tag() - hb_script_to_iso15924_tag() - hb_script_from_string() - - o Changed API: - HB_SCRIPT_* enum members changed value. - - -* Buffer API streamlined: - - o New API: - hb_buffer_reset() - hb_buffer_set_length() - hb_buffer_allocation_successful() - - o Renamed API: - hb_buffer_ensure() renamed to hb_buffer_pre_allocate() - hb_buffer_add_glyph() renamed to hb_buffer_add() - - o Removed API: - hb_buffer_clear() - hb_buffer_clear_positions() - - o Changed API: - hb_buffer_get_glyph_infos() takes an out length parameter now - hb_buffer_get_glyph_positions() takes an out length parameter now - - -* Blob API streamlined: - - o New API: - hb_blob_get_data() - hb_blob_get_data_writable() - - o Renamed API: - hb_blob_create_empty() renamed to hb_blob_get_empty() - - o Removed API: - hb_blob_lock() - hb_blob_unlock() - hb_blob_is_writable() - hb_blob_try_writable() - - o Changed API: - hb_blob_create() takes user_data before destroy now - - -* Unicode functions API: - - o Unicode function vectors can subclass other unicode function vectors now. - Unimplemented callbacks in the subclass automatically chainup to the parent. - - o All hb_unicode_funcs_t callbacks take a user_data now. Their setters - take a user_data and its respective destroy callback. - - o New API: - hb_unicode_funcs_get_empty() - hb_unicode_funcs_get_default() - hb_unicode_funcs_get_parent() - - o Changed API: - hb_unicode_funcs_create() now takes a parent_funcs. - - o Removed func getter functions: - hb_unicode_funcs_get_mirroring_func() - hb_unicode_funcs_get_general_category_func() - hb_unicode_funcs_get_script_func() - hb_unicode_funcs_get_combining_class_func() - hb_unicode_funcs_get_eastasian_width_func() - - -* Face API: - - o Renamed API: - hb_face_get_table() renamed to hb_face_reference_table() - hb_face_create_for_data() renamed to hb_face_create() - - o Changed API: - hb_face_create_for_tables() takes user_data before destroy now - hb_face_reference_table() returns empty blob instead of NULL - hb_get_table_func_t accepts the face as first parameter now - -* Font API: - - o Fonts can subclass other fonts now. Unimplemented callbacks in the - subclass automatically chainup to the parent. When chaining up, - scale is adjusted if the parent font has a different scale. - - o All hb_font_funcs_t callbacks take a user_data now. Their setters - take a user_data and its respective destroy callback. - - o New API: - hb_font_get_parent() - hb_font_funcs_get_empty() - hb_font_create_sub_font() - - o Removed API: - hb_font_funcs_copy() - hb_font_unset_funcs() - - o Removed func getter functions: - hb_font_funcs_get_glyph_func() - hb_font_funcs_get_glyph_advance_func() - hb_font_funcs_get_glyph_extents_func() - hb_font_funcs_get_contour_point_func() - hb_font_funcs_get_kerning_func() - - o Changed API: - hb_font_create() takes a face and references it now - hb_font_set_funcs() takes user_data before destroy now - hb_font_set_scale() accepts signed integers now - hb_font_get_contour_point_func_t now takes glyph first, then point_index - hb_font_get_glyph_func_t returns a success boolean now - - -* Changed object model: - - o All object types have a _get_empty() now: - hb_blob_get_empty() - hb_buffer_get_empty() - hb_face_get_empty() - hb_font_get_empty() - hb_font_funcs_get_empty() - hb_unicode_funcs_get_empty() - - o Added _set_user_data() and _get_user_data() for all object types: - hb_blob_get_user_data() - hb_blob_set_user_data() - hb_buffer_get_user_data() - hb_buffer_set_user_data() - hb_face_get_user_data() - hb_face_set_user_data() - hb_font_funcs_get_user_data() - hb_font_funcs_set_user_data() - hb_font_get_user_data() - hb_font_set_user_data() - hb_unicode_funcs_get_user_data() - hb_unicode_funcs_set_user_data() - - o Removed the _get_reference_count() from all object types: - hb_blob_get_reference_count() - hb_buffer_get_reference_count() - hb_face_get_reference_count() - hb_font_funcs_get_reference_count() - hb_font_get_reference_count() - hb_unicode_funcs_get_reference_count() - - o Added _make_immutable() and _is_immutable() for all object types except for buffer: - hb_blob_make_immutable() - hb_blob_is_immutable() - hb_face_make_immutable() - hb_face_is_immutable() - - -* Changed API for vertical text support - - o The following callbacks where removed: - hb_font_get_glyph_advance_func_t - hb_font_get_kerning_func_t - - o The following new callbacks added instead: - hb_font_get_glyph_h_advance_func_t - hb_font_get_glyph_v_advance_func_t - hb_font_get_glyph_h_origin_func_t - hb_font_get_glyph_v_origin_func_t - hb_font_get_glyph_h_kerning_func_t - hb_font_get_glyph_v_kerning_func_t - - o The following API removed as such: - hb_font_funcs_set_glyph_advance_func() - hb_font_funcs_set_kerning_func() - hb_font_get_glyph_advance() - hb_font_get_kerning() - - o New API added instead: - hb_font_funcs_set_glyph_h_advance_func() - hb_font_funcs_set_glyph_v_advance_func() - hb_font_funcs_set_glyph_h_origin_func() - hb_font_funcs_set_glyph_v_origin_func() - hb_font_funcs_set_glyph_h_kerning_func() - hb_font_funcs_set_glyph_v_kerning_func() - hb_font_get_glyph_h_advance() - hb_font_get_glyph_v_advance() - hb_font_get_glyph_h_origin() - hb_font_get_glyph_v_origin() - hb_font_get_glyph_h_kerning() - hb_font_get_glyph_v_kerning() - - o The following higher-leve API added for convenience: - hb_font_get_glyph_advance_for_direction() - hb_font_get_glyph_origin_for_direction() - hb_font_add_glyph_origin_for_direction() - hb_font_subtract_glyph_origin_for_direction() - hb_font_get_glyph_kerning_for_direction() - hb_font_get_glyph_extents_for_origin() - hb_font_get_glyph_contour_point_for_origin() - - -* OpenType Layout API: - - o New API: - hb_ot_layout_position_start() - hb_ot_layout_substitute_start() - hb_ot_layout_substitute_finish() - - -* Glue code: - - o New API: - hb_glib_script_to_script() - hb_glib_script_from_script() - hb_icu_script_to_script() - hb_icu_script_from_script() - - -* Version API added: - - o New API: - HB_VERSION_MAJOR - HB_VERSION_MINOR - HB_VERSION_MICRO - HB_VERSION_STRING - HB_VERSION_CHECK() - hb_version() - hb_version_string() - hb_version_check() - - |