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Change Log

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog.

Unreleased

[1.8.0][] - 2024-03-05

Fixed

  • Corrupted CFF index data

    there was a subtle bug in cff index implementation that resulted in a data corruption. in certain circumstances some items didn't get properly encoded. this happened when items were not previously accessed.

    this resulted, for instance, in missing glyphs. but only sometimes because indexes might've still contain data that shouldn't've been there. in combination with incorrect encoding (see further) this resulted in some glyphs still being rendered, sometimes even correctly.

    along with the fix a rather large api change landed. this resulted in quite a big diff.

    Alexander Mankuta

  • Incorrect CFF encoding in subsets

    TTFunk used to reuse encoding from the original font. This mapping was incorrect for subset fonts which used not just a subset of glyphs but also a different encoding.

    A separate issue was that some fonts have empty CFF encoding. This incorrect mapping resulted in encoding that mapped all codes to glyph 0.

    This had impact on Prawn in particular. PDF spec explicitly says that CFF encoding is not to be used in OpenType fonts. cmap table should directly index charstrings in the CFF table. Despite this PDF renderers still use CFF encoding to retrieve glyphs. So TTFunk has to discard the original CFF encoding and supply its own.

    Alexander Mankuta

  • maxp table

    The table is now correctly parsed and encoded for both TrueType and CFF-based OpenType fonts.

    Cameron Dutro, Alexander Mankuta

  • Files are closed sooner

    Files were garbage collected but could stay open for longer than necessary.

    Jon Burgess

  • Long date time in the head table

    The created and modified fields we parsed and encoded with incorrect endiannes. Additionally helper methods were added to convert these fields to and from Ruby Time.

    Jens Kutilek, Peter Goldstein

  • Removed execution permissions on non-executable files

    Keenan Brock

Changes

  • Minimum Ruby is 2.7

    Alexander Mankuta

  • Performance improvement in subsets construction

    Thomas Leitner

  • CI improvememnts

    Peter Goldstein

1.7.0 - 2020-12-29

Changes

  • Allow gem installation on Ruby 3.0

    Pavel Lobashov

  • Allow TTC files to be read from IO object

    Tom de Grunt

1.6.2.1 - 2020-02-14

Fixed

  • 1.6.2 gem conains local debuging code. This is the same commit but without local changes.

    Alexander Mankuta

1.6.2 - 2020-02-14

Fixed

  • Reverted to pre 1.6 maxp table serialization.

    Cameron Dutro

1.6.1 - 2020-01-07

Fixed

  • Fixed maxp table encoding

    Cameron Dutro

1.6.0 - 2020-01-04

Added

  • OpenType fonts support

    • Added support for CFF-flavored fonts (also known as CID-keyed or OpenType fonts)
    • Added support for the VORG and DSIG tables
    • Improved charset encoding support
    • Improved font metrics calculations in the head, maxp, hhea, hmtx, and os/2 tables
    • Subsetted fonts verified with Font-Validator, fontlint, and Mac OS's Font Book

    Cameron Dutro

  • Ruby 2.6 support

    Alexander Mankuta

  • JRuby 9.2 support

    Alexander Mankuta

Removed

  • Dropped Ruby 2.1 & 2.2 support

    Alexander Mankuta

  • Removed JRuby 9.1 support

    Alexander Mankuta

Fixed

  • Sort name table entries when generating subset font

    Matjaz Gregoric

  • Map the 0xFFFF char code to glyph 0 in cmap format 4

    Matjaz Gregoric

  • Order tables by tag when generating font subset

    Matjaz Gregoric

  • Fix typo in TTFunk::Subset::Unicode#includes?

    Matjaz Gregoric

  • Fixe calculation of search_range for font subsets

    Matjaz Gregoric

  • Fixed instance variable @offset and @length not initialized

    Katsuya HIDAKA

  • Code style fixes

    Katsuya HIDAKA, Matjaz Gregoric, Alexander Mankuta

1.5.1 - 2017-04-11

Fixed

  • loca table corruption during subsetting. The loca table serialization code didn't properly detect suitable table format.

  • Fixed checksum calculation for empty tables.

1.5.0 - 2017-02-13

Added

  • Support for reading TTF fonts from TTC files

Changed

  • Subset font naming is consistent now and depends on content

1.4.0 - 2014-09-21

Added

  • sbix table support

1.3.0 - 2014-09-10

Removed

  • Post table version 2.5

1.2.2 - 2014-08-29

Fixed

  • Ignore unsupported cmap table versions

1.2.1 - 2014-08-28

Fixed

  • Added missing Pathname require

1.2.0 - 2014-06-23

Added

  • Rubocop checks
  • Ability to parse IO objects

Changed

  • Improved preferred family name selection

1.1.1 - 2014-02-24

Changed

  • Clarified licensing

Removed

  • comicsans.ttf

1.1.0 - 2014-01-21

Added

  • Improved Unicode astral planes support
  • Support for cmap table formats 6, 10, 12
  • RSpec-based specs

Fixed

  • Subsetting in JRuby

1.0.3 - 2011-10-11

Added

  • Authorship information

1.0.2 - 2011-08-08

Fixed

  • Ruby 1.9.2 segmentation fault on Enumerable#zip(range)

1.0.0 - 2011-04-02 [YANKED]

Initial release as a standalone gem