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CHANGELOG.md

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Changelog

All notable changes to this project will be documented in this file. The format is based on Keep a Changelog, and this project aims to follow Semantic Versioning.

Unreleased

0.15.0 - 2024-06-06

Added

  • Support for instancing variable fonts and reading variable font related tables such as fvar, gvar, avar.
  • Support for CFF2: Reading, instancing, subsetting to CFF, and extracting outlines.
  • Refactor Glyph types to be more compact and track phantom points.
  • Ability to generate a HTML font specimen. Gated behind off-by-default specimen feature.

Changed

  • Use default feature mask when shaping Thai and Lao text.
  • pathfinder_geometry is no longer optional as it's used for variable fonts.
  • Apply rvrn early in shaping.
  • Use bitflags for macStyle and fsSelection.
  • Introduce RawGlyphFlags for tracking glyph flags.
  • Add ParseError::UnsuitableCmap and change Font::new to return Result<Font, _> instead of Result<Option<Font>, _>.

Fixed

  • Fix registry and ordering when converting CFF Type 1 to CID.
  • Recognise Apple's true magic for TrueType fonts.

0.14.2 - 2024-05-29

Fixed

  • Fix issue where some mark-to-mark positioning was incorrect. #107

0.14.1 - 2023-08-15

Added

  • Provide access to value held by cff::Real. #93

Fixed

0.14.0 - 2023-03-02

Added

  • Global and local subroutines in CFF fonts are now subset as part of subsetting.

Changed

  • Introduce SubsetError as error type for subsetting.
  • Upgrade dependencies
  • Bump MSRV to 1.66.0.

Fixed

  • Fix glyf loca null transform parsing in WOFF2 #88
  • Prevent possible panic in offset_length.

0.13.0 - 2022-11-14

Fixed

  • Reserve sufficient capacity for Vec<SimpleGlyphFlag>.
  • Read unused ValueRecord fields as u16s. Clarify that they are offsets.

Changed

  • Bump MSRV to 1.63.0.

0.12.1 - 2022-10-18

Changed

  • Suppress a dead code warning.

0.12.0 - 2022-10-18

Changed

  • Add a few accessors (for use in allsorts-tools).
  • Upgrade tables and dependencies to use Unicode 15.0 data.

0.11.0 - 2022-08-10

Fixed

  • Failure to shape some Indic syllables that begin with a number.

Changed

  • Make Font only depend on lifetime of ReadScope. #76

0.10.0 - 2022-06-14

Changed

  • Derive common traits on more types.

0.9.2 - 2022-06-09

Changed

  • Work around libz-sys MSRV change.

0.9.1 - 2022-06-09

Changed

  • Bump regex dev dependency.

0.9.0 - 2022-03-25

Fixed

  • Subsetting now produces a valid standalone font for use outside PDF. #27
  • Workaround fonts that contain invalid final cmap format 4 segment. b6a9fd6

0.8.0 - 2022-03-01

Added

  • Upgrade tables and dependencies to use Unicode 14.0 data.
  • Allow the tables to consult for images to be specified. #57

Changed

  • Reorganise subsetting code in preparation for future changes.

0.7.1 - 2022-01-18

Fixed

  • Emit error if neither of the features for selecting a flate2 backend are provided.

0.7.0 - 2022-01-14

Added

  • Cargo features to allow selecting different backends of the flate2 crate. #50

0.6.0 - 2021-07-20

Added

  • Support for shaping Khmer, Lao, Sinhala, and Thai text.
  • Support for laying out glyphs and obtaining their positions.
  • Support for accessing glyph contours.
  • Allow extra OpenType features to be supplied to Font::shape.
  • Provide offset_table accessor on OpenTypeFont.

Changed

  • Combine gpos::Info and gpos::Attachment into gpos::Placement.
  • GPOS performance improvements.
  • Optimised handling of CFF fonts with custom characters sets.
  • Always apply default shaping for complex scripts.
  • Apply Unicode mark reordering to more scripts, not just Arabic and Indic scripts.
  • Bump MSRV to 1.51.0.

Fixed

  • Handle post tables that map more than one glyph to the same name index.
  • Handle non-adjacent cursive connections in GPOS.
  • Support version 1.1 GPOS/GSUB tables.
  • Fixed a mistake that resulted in vmtx table being repeatedly cloned in Font.
  • Avoid some allocations when working with glyphs.

0.5.1 - 2020-12-18

Fixed

  • Updated README to reflect current feature set.

0.5.0 - 2020-12-18

Added

  • Simplified shaping API on Font.
  • Unified API for accessing images in CBLC/sbix/SVG tables.
  • Language specific shaping rules via locl
  • Support for shaping Syriac.
  • Export tag! macro.
  • GSUB caching in Arabic, Syriac, and Indic.
  • Support fonts with Big5 encoded cmap subtables.

Changed

  • Rename some types and methods to better reflect their function.

0.4.0 - 2020-06-17

Added

  • Support for deriving glyph names from post and cmap.
  • Support for more OpenType features in gsub: common_ligatures, discretionary_ligatures, historical_ligatures, contextual_ligatures, small_caps, all_small_caps, lining_nums, oldstyle_nums, proportional_nums, tabular_nums, diagonal_fractions, stacked_fractions, ordinal, and slashed_zero.
  • Consideration of variation selector when looking up glyph index.
  • Support for shaping Arabic text.

Changed

  • Depend on just num-traits instead of num.
  • Store RawVec unicodes in a TinyVec

Fixed

  • Recover from incorrect loca offset beyond end of glyf when glyph is valid.
  • Ensure instruction length is written for composite glyph with empty instructions but the WE_HAVE_INSTRUCTIONS flag bit set.

0.3.0 - 2020-02-11

Added

  • Support for GSUB Lookup Type 8 (Reverse Chaining Contextual Single Substitution).
  • Lookup function to retrieve metrics and bitmap data from EBDT/CBDT tables.
    • This constitutes initial, low-level support for bitmap fonts and emoji.

0.2.0 - 2020-01-30

Added

  • CBLC colour bitmap locator table parsing.
  • Tests for black & white emoji.

Changed

  • GlyfRecord::parse takes &mut self instead of self.

Fixed

  • Rejection of simple glyphs with zero contours.
  • Incorrect reading of glyphs from glyf table when loca offsets didn't start at zero.
  • Issue where a prebase matra would "connect" to a preceding punctuation mark, due to the punctuation mark being considered part of the word.

0.1.0 - 2019-11-20

  • Initial release