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()