1774 lines
51 KiB
Plaintext
1774 lines
51 KiB
Plaintext
Overview of changes leading to 1.7.0
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Monday, November 13, 2017
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====================================
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- Minor Indic fixes.
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- Implement kerning and glyph names in hb-ot-font.
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- Various DSO optimization re .data and .bss sizes.
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- Make C++11 optional; build fixes.
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- Mark all other backends "unsafe-to-break".
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- Graphite fix.
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Overview of changes leading to 1.6.3
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Thursday, October 26th, 2017
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====================================
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- Fix hb_set_t some more. Should be solid now.
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- Implement get_glyph_name() for hb-ot-font.
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- Misc fixes.
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Overview of changes leading to 1.6.2
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Monday, October 23nd, 2017
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====================================
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- Yesterday's release had a bad crasher; don't use it. That's what
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happens when one works on Sunday...
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https://github.com/behdad/harfbuzz/issues/578
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- Build fixes for FreeBSD and Chrome Android.
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Overview of changes leading to 1.6.1
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Sunday, October 22nd, 2017
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====================================
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- Don't skip over COMBINING GRAPHEME JOINER when ligating, etc.
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To be refined: https://github.com/behdad/harfbuzz/issues/554
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- Faster hb_set_t implementation.
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- Don't use deprecated ICU API.
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- Fix undefined-behavior in Myanmar shaper, introduced in 1.6.0
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- Deprecated API:
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hb_set_invert()
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Overview of changes leading to 1.6.0
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Friday, October the 13th, 2017
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====================================
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- Update to Unicode 10.
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- Various Indic and Universal Shaping Engine fixes as a result of
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HarfBuzz Hackfest with Jonathan Kew at Web Engines Hackfest at
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the Igalia offices in A Coruña, Spain. Thanks Igalia for having
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us!
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- Implement Unicode Arabic Mark Ordering Algorithm UTR#53.
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- Implement optical sizing / tracking in CoreText backend, using
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new API hb_font_set_ptem().
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- Allow notifying hb_font_t that underlying FT_Face changed sizing,
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using new API hb_ft_font_changed().
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- More Graphite backend RTL fixes.
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- Fix caching of variable font shaping plans.
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- hb-view / hb-shape now accept following new arguments:
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o --unicodes: takes a list of hex numbers that represent Unicode
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codepoints.
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New API:
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+hb_face_get_table_tags()
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+hb_font_set_ptem()
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+hb_font_get_ptem()
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+hb_ft_font_changed()
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Overview of changes leading to 1.5.1
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Tuesday, September 5, 2017
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====================================
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- Fix "unsafe-to-break" in fallback shaping and other corner cases.
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All our tests pass with --verify now, meaning unsafe-to-break API
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works as expected.
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- Add --unicodes to hb-view / hb-shape.
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- [indic] Treat Consonant_With_Stacker as consonant. This will need
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further tweaking.
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- hb_buffer_diff() tweaks.
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Overview of changes leading to 1.5.0
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Wednesday, August 23, 2017
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====================================
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- Misc new API, for appending a buffer to another, and for comparing
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contents of two buffers for types of differences.
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- New "unsafe-to-break" API. Can be used to speed up reshaping
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in line-breaking situations. Essentially, after shaping, it returns
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positions in the input string (some of the cluster boundaries) that
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are "safe to break" in that if the text is segmented at that position
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and two sides reshaped and concatenated, the shaping result is
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exactly the same as shaping the text in one piece.
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hb-view and hb-shape and hb-shape now take --verify, which verifies
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the above property.
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Some corner cases of the implementation are still not quite working.
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Those will be fixed in subsequent releases.
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- New API:
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hb_buffer_append()
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hb_glyph_flags_t
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HB_GLYPH_FLAG_UNSAFE_TO_BREAK
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HB_GLYPH_FLAG_DEFINED
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hb_glyph_info_get_glyph_flags()
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HB_BUFFER_SERIALIZE_FLAG_GLYPH_FLAGS
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hb_buffer_diff_flags_t
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HB_BUFFER_DIFF_FLAG_EQUAL
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HB_BUFFER_DIFF_FLAG_CONTENT_TYPE_MISMATCH
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HB_BUFFER_DIFF_FLAG_LENGTH_MISMATCH
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HB_BUFFER_DIFF_FLAG_NOTDEF_PRESENT
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HB_BUFFER_DIFF_FLAG_DOTTED_CIRCLE_PRESENT
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HB_BUFFER_DIFF_FLAG_CODEPOINT_MISMATCH
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HB_BUFFER_DIFF_FLAG_CLUSTER_MISMATCH
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HB_BUFFER_DIFF_FLAG_GLYPH_FLAGS_MISMATCH
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HB_BUFFER_DIFF_FLAG_POSITION_MISMATCH
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hb_buffer_diff
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Overview of changes leading to 1.4.8
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Tuesday, August 8, 2017
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====================================
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- Major fix to avar table handling.
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- Rename hb-shape --show-message to --trace.
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- Build fixes.
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Overview of changes leading to 1.4.7
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Tuesday, July 18, 2017
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====================================
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- Multiple Indic, Tibetan, and Cham fixes.
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- CoreText: Allow disabling kerning.
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- Adjust Arabic feature order again.
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- Misc build fixes.
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Overview of changes leading to 1.4.6
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Sunday, April 23, 2017
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====================================
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- Graphite2: Fix RTL positioning issue.
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- Backlist GDEF of more versions of Padauk and Tahoma.
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- New, experimental, cmake alternative build system.
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Overview of changes leading to 1.4.5
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Friday, March 10, 2017
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====================================
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- Revert "Fix Context lookup application when moving back after a glyph..."
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This introduced memory access problems. To be fixed properly soon.
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Overview of changes leading to 1.4.4
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Sunday, March 5, 2017
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====================================
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- Fix Context lookup application when moving back after a glyph deletion.
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- Fix buffer-overrun in Bengali.
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Overview of changes leading to 1.4.3
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Saturday, February 25, 2017
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====================================
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- Route Adlam script to Arabic shaper.
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- Misc fixes.
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- New API:
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hb_font_set_face()
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- Deprecate API:
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hb_graphite2_font_get_gr_font()
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Overview of changes leading to 1.4.2
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Monday, January 23, 2017
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====================================
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- Implement OpenType Font Variation tables avar/fvar/HVAR/VVAR.
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- hb-shape and hb-view now accept --variations.
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- New API:
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hb_variation_t
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hb_variation_from_string()
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hb_variation_to_string()
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hb_font_set_variations()
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hb_font_set_var_coords_design()
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hb_font_get_var_coords_normalized()
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hb-ot-var.h:
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hb_ot_var_axis_t
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hb_ot_var_has_data()
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hb_ot_var_get_axis_count()
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hb_ot_var_get_axes()
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hb_ot_var_find_axis()
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hb_ot_var_normalize_variations()
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hb_ot_var_normalize_coords()
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- MVAR to be implemented later. Access to named instances to be
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implemented later as well.
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- Misc fixes.
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Overview of changes leading to 1.4.1
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Thursday, January 5, 2017
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====================================
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- Always build and use UCDN for Unicode data by default.
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Reduces dependence on version of Unicode data in glib,
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specially in the Windows bundles we are shipping, which
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have very old glib.
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Overview of changes leading to 1.4.0
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Thursday, January 5, 2017
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====================================
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- Merged "OpenType GX" branch which adds core of support for
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OpenType 1.8 Font Variations. To that extent, the relevant
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new API is:
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New API:
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hb_font_set_var_coords_normalized()
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with supporting API:
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New API:
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HB_OT_LAYOUT_NO_VARIATIONS_INDEX
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hb_ot_layout_table_find_feature_variations()
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hb_ot_layout_feature_with_variations_get_lookups()
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hb_shape_plan_create2()
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hb_shape_plan_create_cached2()
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Currently variations in GSUB/GPOS/GDEF are fully supported,
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and no other tables are supported. In particular, fvar/avar
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are NOT supported, hence the hb_font_set_var_coords_normalized()
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taking normalized coordinates. API to take design coordinates
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will be added in the future.
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HVAR/VVAR/MVAR support will also be added to hb-ot-font in the
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future.
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- Fix regression in GDEF glyph class processing.
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- Add decompositions for Chakma, Limbu, and Balinese in USE shaper.
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- Misc fixes.
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Overview of changes leading to 1.3.4
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Monday, December 5, 2016
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====================================
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- Fix vertical glyph origin in hb-ot-font.
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- Implement CBDT/CBLC color font glyph extents in hb-ot-font.
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Overview of changes leading to 1.3.3
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Wednesday, September 28, 2016
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====================================
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- Implement parsing of OpenType MATH table.
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New API:
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HB_OT_TAG_MATH
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HB_OT_MATH_SCRIPT
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hb_ot_math_constant_t
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hb_ot_math_kern_t
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hb_ot_math_glyph_variant_t
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hb_ot_math_glyph_part_flags_t
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hb_ot_math_glyph_part_t
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hb_ot_math_has_data
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hb_ot_math_get_constant
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hb_ot_math_get_glyph_italics_correction
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hb_ot_math_get_glyph_top_accent_attachment
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hb_ot_math_get_glyph_kerning
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hb_ot_math_is_glyph_extended_shape
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hb_ot_math_get_glyph_variants
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hb_ot_math_get_min_connector_overlap
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hb_ot_math_get_glyph_assembly
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Overview of changes leading to 1.3.2
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Wednesday, September 27, 2016
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====================================
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- Fix build of hb-coretext on older OS X versions.
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Overview of changes leading to 1.3.1
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Wednesday, September 7, 2016
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====================================
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- Blacklist bad GDEF of more fonts (Padauk).
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- More CoreText backend crash fixes with OS X 10.9.5.
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- Misc fixes.
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Overview of changes leading to 1.3.0
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Thursday, July 21, 2016
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====================================
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- Update to Unicode 9.0.0
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- Move Javanese from Indic shaper to Universal Shaping Engine.
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- Allow MultipleSubst to delete a glyph (matching Windows engine).
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- Update Universal Shaping Engine to latest draft from Microsoft.
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- DirectWrite backend improvements. Note: this backend is for testing ONLY.
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- CoreText backend improvements with unreachable fonts.
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- Implement symbol fonts (cmap 3.0.0) in hb-ft and hb-ot-font.
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- Blacklist bad GDEF of more fonts (Tahoma & others).
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- Misc fixes.
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Overview of changes leading to 1.2.7
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Monday, May 2, 2016
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====================================
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- Blacklist another version of Times New Roman (Bold) Italic from Windows 7.
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- Fix Mongolian Free Variation Selectors shaping with certain fonts.
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- Fix Tibetan shorthand contractions shaping.
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- Improved list of language tag mappings.
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- Unbreak build on Windows CE.
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- Make 'glyf' table loading lazy in hb-ot-font.
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Overview of changes leading to 1.2.6
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Friday, April 8, 2016
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====================================
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- Blacklist GDEF table of another set of Times New Roman (Bold) Italic.
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- DirectWrite backend improvements. Note: DirectWrite backend is
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exclusively for our internal testing and should NOT be used in any
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production system whatsoever.
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Overview of changes leading to 1.2.5
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Monday, April 4, 2016
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====================================
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- Fix GDEF mark-filtering-set, which was broken in 1.2.3.
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Overview of changes leading to 1.2.4
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Thursday, March 17, 2016
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====================================
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- Synthesize GDEF glyph class for any glyph that does not have one in GDEF.
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I really hope we don't discover broken fonts that shape badly with this
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change.
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- Misc build and other minor fixes.
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- API changes:
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- Added HB_NDEBUG. It's fine for production systems to define this to
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disable high-overhead debugging checks. However, I also reduced the
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overhead of those checks, so it's a non-issue right now. You can
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forget it. Just not defining anything at all is fine.
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Overview of changes leading to 1.2.3
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Thursday, February 25, 2016
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====================================
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- Blacklist GDEF table of certain versions of Times New Roman (Bold) Italic,
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due to bug in glyph class of ASCII double-quote character. This should
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address "regression" introduced in 1.2.0 when we switched mark zeroing
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in most shapers from BY_UNICODE_LATE to BY_GDEF_LATE.
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This fourth release in a week should finally stablize things...
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- hb-ot-font's get_glyph() implementation saw some optimizations. Though,
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might be really hard to measure in real-world situations.
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- Also, two rather small API changes:
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We now disable some time-consuming internal bookkeeping if built with NDEBUG
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defined. This is a first time that we use NDEBUG to disable debug code. If
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there exist production systems that do NOT want to enable NDEBUG, please let
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me know and I'll add HB_NDEBUG.
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Added get_nominal_glyph() and get_variation_glyph() instead of get_glyph()
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New API:
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- hb_font_get_nominal_glyph_func_t
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- hb_font_get_variation_glyph_func_t
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- hb_font_funcs_set_nominal_glyph_func()
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- hb_font_funcs_set_variation_glyph_func()
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- hb_font_get_nominal_glyph()
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- hb_font_get_variation_glyph()
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Deprecated API:
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- hb_font_get_glyph_func_t
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- hb_font_funcs_set_glyph_func()
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Clients that implement their own font-funcs are encouraged to replace
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their get_glyph() implementation with a get_nominal_glyph() and
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get_variation_glyph() pair. The variation version can assume that
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variation_selector argument is not zero. Old (deprecated) functions
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will continue working indefinitely using internal gymnastics; it is
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just more efficient to use the new functions.
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Overview of changes leading to 1.2.2
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Wednesday, February 24, 2016
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====================================
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- Fix regression with mark positioning with fonts that have
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non-zero mark advances. This was introduced in 1.2.0 while
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trying to make mark and cursive attachments to work together.
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I have partially reverted that, so this version is much more
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like what we had before. All clients who updated to 1.2.0
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should update to this version.
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Overview of changes leading to 1.2.1
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Tuesday, February 23, 2016
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====================================
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- CoreText: Fix bug with wrong scale if font scale was changed later.
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https://github.com/libass/libass/issues/212
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- CoreText: Drastically speed up font initialization.
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- CoreText: Fix tiny leak.
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- Group ZWJ/ZWNJ with previous syllable under cluster-level=0.
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https://github.com/behdad/harfbuzz/issues/217
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- Add test/shaping/README.md about how to add tests to the suite.
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Overview of changes leading to 1.2.0
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Friday, February 19, 2016
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====================================
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- Fix various issues (hangs mostly) in case of memory allocation failure.
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- Change mark zeroing types of most shapers from BY_UNICODE_LATE to
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BY_GDEF_LATE. This seems to be what Uniscribe does.
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- Change mark zeroing of USE shaper from NONE to BY_GDEF_EARLY. That's
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what Windows does.
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- Allow GPOS cursive connection on marks, and fix the interaction with
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mark attachment. This work resulted in some changes to how mark
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attachments work. See:
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https://github.com/behdad/harfbuzz/issues/211
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https://github.com/behdad/harfbuzz/commit/86c68c7a2c971efe8e35b1f1bd99401dc8b688d2
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- Graphite2 shaper: improved negative advance handling (eg. Nastaliq).
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- Add nmake-based build system for Windows.
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- Minor speedup.
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- Misc. improvements.
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Overview of changes leading to 1.1.3
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Monday, January 11, 2016
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====================================
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- Ported Indic shaper to Unicode 8.0 data.
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- Universal Shaping Engine fixes.
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- Speed up CoreText shaper when font fallback happens in CoreText.
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- Documentation improvements, thanks to Khaled Hosny.
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- Very rough directwrite shaper for testing, thanks to Ebrahim Byagowi.
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- Misc bug fixes.
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- New API:
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* Font extents:
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hb_font_extents_t
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hb_font_get_font_extents_func_t
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hb_font_get_font_h_extents_func_t
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hb_font_get_font_v_extents_func_t
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hb_font_funcs_set_font_h_extents_func
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hb_font_funcs_set_font_v_extents_func
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hb_font_get_h_extents
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hb_font_get_v_extents
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hb_font_get_extents_for_direction
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* Buffer message (aka debug):
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hb_buffer_message_func_t
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hb_buffer_set_message_func()
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Actual message protocol to be fleshed out later.
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Overview of changes leading to 1.1.2
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Wednesday, November 26, 2015
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====================================
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- Fix badly-broken fallback shaper that affected terminology.
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https://github.com/behdad/harfbuzz/issues/187
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- Fix y_scaling in Graphite shaper.
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- API changes:
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* An unset glyph_h_origin() function in font-funcs now (sensibly)
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implies horizontal origin at 0,0. Ie, the nil callback returns
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true instead of false. As such, implementations that have a
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glyph_h_origin() that simply returns true, can remove that function
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with HarfBuzz >= 1.1.2. This results in a tiny speedup.
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Overview of changes leading to 1.1.1
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Wednesday, November 24, 2015
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====================================
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- Build fixes, specially for hb-coretext.
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Overview of changes leading to 1.1.0
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Wednesday, November 18, 2015
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====================================
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- Implement 'stch' stretch feature for Syriac Abbreviation Mark.
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https://github.com/behdad/harfbuzz/issues/141
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- Disable use of decompose_compatibility() callback.
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- Implement "shaping" of various Unicode space characters, even
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if the font does not support them.
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https://github.com/behdad/harfbuzz/issues/153
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- If font does not support U+2011 NO-BREAK HYPHEN, fallback to
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U+2010 HYPHEN.
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- Changes resulting from libFuzzer continuous fuzzing:
|
|
* Reject font tables that need more than 8 edits,
|
|
* Bound buffer growth during shaping to 32x,
|
|
* Fix assertions and other issues at OOM / buffer max-growth.
|
|
- Misc fixes and optimizations.
|
|
- API changes:
|
|
* All fonts created with hb_font_create() now inherit from
|
|
(ie. have parent) hb_font_get_empty().
|
|
|
|
|
|
Overview of changes leading to 1.0.6
|
|
Thursday, October 15, 2015
|
|
====================================
|
|
|
|
- Reduce max nesting level in OT lookups from 8 to 6.
|
|
Should not affect any real font as far as I know.
|
|
- Fix memory access issue in ot-font.
|
|
- Revert default load-flags of fonts created using hb_ft_font_create()
|
|
back to FT_LOAD_DEFAULT|FT_LOAD_NO_HINTING. This was changed in
|
|
last release (1.0.5), but caused major issues, so revert.
|
|
https://github.com/behdad/harfbuzz/issues/143
|
|
|
|
|
|
Overview of changes leading to 1.0.5
|
|
Tuesday, October 13, 2015
|
|
====================================
|
|
|
|
- Fix multiple memory access bugs discovered using libFuzzer.
|
|
https://github.com/behdad/harfbuzz/issues/139
|
|
Everyone should upgrade to this version as soon as possible.
|
|
We now have continuous fuzzing set up, to avoid issues like
|
|
these creeping in again.
|
|
- Misc fixes.
|
|
|
|
- New API:
|
|
* hb_font_set_parent().
|
|
* hb_ft_font_[sg]et_load_flags()
|
|
The default flags for fonts created using hb_ft_font_create()
|
|
has changed to default to FT_LOAD_DEFAULT now. Previously it
|
|
was defaulting to FT_LOAD_DFEAULT|FT_LOAD_NO_HINTING.
|
|
|
|
- API changes:
|
|
* Fonts now default to units-per-EM as their scale, instead of 0.
|
|
* hb_font_create_sub_font() does NOT make parent font immutable
|
|
anymore. hb_font_make_immutable() does.
|
|
|
|
|
|
Overview of changes leading to 1.0.4
|
|
Wednesday, September 30, 2015
|
|
====================================
|
|
|
|
- Fix minor out-of-bounds read error.
|
|
|
|
|
|
Overview of changes leading to 1.0.3
|
|
Tuesday, September 1, 2015
|
|
====================================
|
|
|
|
- Start of user documentation, from Simon Cozens!
|
|
- Implement glyph_extents() for TrueType fonts in hb-ot-font.
|
|
- Improve GPOS cursive attachments with conflicting lookups.
|
|
- More fixes for cluster-level = 1.
|
|
- Uniscribe positioning fix.
|
|
|
|
|
|
Overview of changes leading to 1.0.2
|
|
Wednesday, August 19, 2015
|
|
====================================
|
|
|
|
- Fix shaping with cluster-level > 0.
|
|
- Fix Uniscribe backend font-size scaling.
|
|
- Declare dependencies in harfbuzz.pc.
|
|
FreeType is not declared though, to avoid bugs in pkg-config
|
|
0.26 with recursive dependencies.
|
|
- Slightly improved debug infrastructure. More to come later.
|
|
- Misc build fixes.
|
|
|
|
|
|
Overview of changes leading to 1.0.1
|
|
Monday, July 27, 2015
|
|
====================================
|
|
|
|
- Fix out-of-bounds access in USE shaper.
|
|
|
|
|
|
Overview of changes leading to 1.0.0
|
|
Sunday, July 26, 2015
|
|
====================================
|
|
|
|
- Implement Universal Shaping Engine:
|
|
https://www.microsoft.com/typography/OpenTypeDev/USE/intro.htm
|
|
http://blogs.windows.com/bloggingwindows/2015/02/23/windows-shapes-the-worlds-languages/
|
|
- Bump version to 1.0.0. The soname was NOT bumped.
|
|
|
|
|
|
Overview of changes leading to 0.9.42
|
|
Thursday, July 26, 2015
|
|
=====================================
|
|
|
|
- New API to allow for retrieving finer-grained cluster
|
|
mappings if the client desires to handle them. Default
|
|
behavior is unchanged.
|
|
- Fix cluster merging when removing default-ignorables.
|
|
- Update to Unicode 8.0
|
|
- hb-graphite2 fixes.
|
|
- Misc fixes.
|
|
- Removed HB_NO_MERGE_CLUSTERS hack.
|
|
- New API:
|
|
hb_buffer_cluster_level_t enum
|
|
hb_buffer_get_cluster_level()
|
|
hb_buffer_set_cluster_level()
|
|
hb-shape / hb-view --cluster-level
|
|
|
|
|
|
Overview of changes leading to 0.9.41
|
|
Thursday, June 18, 2015
|
|
=====================================
|
|
|
|
- Fix hb-coretext with trailing whitespace in right-to-left.
|
|
- New API: hb_buffer_reverse_range().
|
|
- Allow implementing atomic ops in config.h.
|
|
- Fix hb_language_t in language bindings.
|
|
- Misc fixes.
|
|
|
|
|
|
Overview of changes leading to 0.9.40
|
|
Friday, March 20, 2015
|
|
=====================================
|
|
|
|
- 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.
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|
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o Removed func getter functions:
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hb_unicode_funcs_get_mirroring_func()
|
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hb_unicode_funcs_get_general_category_func()
|
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hb_unicode_funcs_get_script_func()
|
|
hb_unicode_funcs_get_combining_class_func()
|
|
hb_unicode_funcs_get_eastasian_width_func()
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|
|
|
|
|
* 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()
|
|
|
|
|