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57 Commits

Author SHA1 Message Date
Qunxin Liu 74b46b29e7 [subset] MATH: don't serialize coverage table when iterator is empty 
when iterator is empty, just set coverage offset to 0.
serialize() in coverage will at lease write out a 16-bit format header.
 2021-12-03 08:00:33 -07:00
Qunxin Liu 903a6baece [subset] layout_features filtering fix 
we should not use get_size (), which returns length * item_size
 2021-11-25 11:24:41 -07:00
Qunxin Liu 84dc4e85e8 [subset] avoid writing out duplicate extra glyph names in post table 
Add check for possible duplicate with other name index
 2021-11-19 17:22:35 -07:00
Qunxin Liu ca418cac74 [subset] keep features that have FeatureParams and the tag is "size" 2021-11-19 13:31:25 -07:00
Qunxin Liu e88fc41ef3 [subset] inputSequence could be empty, change the sanity check 2021-11-19 12:57:43 -07:00
Qunxin Liu 540f19b6fe [subset] fix bug in (Chain)ContextFormat2 
Only keep rulesets for glyphs class numbers that survived in coverage
 2021-11-02 16:05:55 -07:00
Qunxin Liu 60e203644b [subset] use glyphset_gsub instead of glyphset for GDEF 2021-11-02 16:56:52 -06:00
Qunxin Liu 364b6b3989 [subset] Don't assume FeatureList is sorted 
Though the spec said FeatureRecords are sorted alphabetically by feature
tag, there're font files with unsorted FeatureList. And harfbuzz is not
able to subset these files correctly because we use binary search in
finding featureRecords when collecting lookups. Also
find_duplicate_features needs to be updated to handle this.
 2021-11-02 15:15:02 -07:00
Qunxin Liu 8c583db9b5 [subset] COLRv1: update subset() method for new strutc ClipList and VarIdxMap 
Also fix issues in struct PaintTransform definition
 2021-10-23 11:22:39 -07:00
Qunxin Liu ca7b9daef0 [subset] subset MATH table 2021-09-22 18:08:30 -04:00
Qunxin Liu 8c5c81746d [subset] fix find_duplicate_features 
We should check each feature against all other features with the same
tag for duplicates.
 2021-09-22 15:35:38 -06:00
Qunxin Liu 37379f8f7d [subset] fox for (Chain)ContextFormat3: subset lookupRecord 
skip copying a lookupRecord if lookup referenced in the lookupRecord is
not retained after subset
 2021-09-08 13:55:21 -06:00
Qunxin Liu 34e0b28fae [subset] make glyph-names option match fonttools behavior 
Don't encode psNames that are contained in standard glyph names set
 2021-08-20 01:30:23 -06:00
Garret Rieger e39c3bde7b [subset] fix bug in parsing glyf flags. 
the bytes of the flag stream were being treated as signed integers instead of unsigned as specified in the spec.
 2021-08-10 12:57:07 -06:00
Garret Rieger 2c024dc3cb [subset] prune redundant cmap12 subtables. 
If the post subset cmap12 table is equivalent to another cmap subtable don't include the 12 table in the final subset. Matches change https://github.com/fonttools/fonttools/pull/2146 from fontTools.
 2021-08-04 17:36:24 -06:00
Garret Rieger acbd8b27dc [subset] temporarily disable COLRv1 subsetting. 
Currently COLRv1 spec is being changed so the subsetting implementation is out of sync. Disable subsetting by failing sanitization for COLRv1 tables and disable all colrv1 tests.
 2021-07-28 11:36:34 -06:00
Garret Rieger deee24fbef [subset] Add missing FontName op code in top dict parsing. 
Fix for #3058
 2021-07-14 16:01:18 -06:00
Garret Rieger d2397d91f3 [subset] Add additional colrv1 subsetting tests that has a glyph with components. 2021-06-18 22:34:00 -07:00
Garret Rieger a08900b721 [subset] fix failing colrv0 subsetting when font has composite glyphs. 
Composite glyph collection was happening along side colrv0 glyph collection which meant it was possible to miss grabbing the component glyphs for a glyph added by colrv0.
 2021-05-10 15:33:54 -06:00
Garret Rieger c35d786397 [subset] never drop the 'pref' feature. 
Never ever drop feature 'pref', even if it's empty. Harfbuzz uses it to choose the shaper for Khmer.
 2021-04-01 16:27:35 -06:00
Garret Rieger 85b0728783 Add full variable font subsetting test. 2021-04-01 15:26:02 -06:00
Garret Rieger 2773d05740 [subset] Add a test case using NotoNastaliqUrdu. 2021-03-31 21:03:33 -06:00
Qunxin Liu 95230e291d [subset] support subsetting GSUB8 2021-03-29 15:54:11 -06:00
Garret Rieger b8b8c58b9f [subset] add tests that check for successful repacking of a real font file. 2021-03-17 15:53:58 -07:00
Qunxin Liu 0e1c0fa404 [subset] optimize glyph closure method: step 5 
add testcase and some fixes
 2021-03-17 15:22:07 -06:00
Garret Rieger 00d9276343 Add gpos9 expected files to Makefile.am 2021-02-11 13:41:31 -07:00
Behdad Esfahbod c7d232ce4e
Merge pull request #2701 from googlefonts/Mark-To-Ligature_grieger 
[subset] GPOS 5 MarkToLigature subsetting support
 2021-02-10 18:13:38 -07:00
Khaled Hosny 554aaa0c5d [build] Fix make distcheck 
A regression from 7b77ce0507.
It was caught by the CI build in the PR, but apparently we are now used
to CI failures that they are effectively ignored.

Also, yay for multiple build systems.
 2021-02-10 23:22:02 +02:00
Qunxin Liu 3a0b05faf1 [subset] GPOS 5 MarkToLigature subsetting support 2020-10-01 15:59:16 -07:00
Ebrahim Byagowi 5193357832 Revert "Remove autotools build support" 
This reverts commit 01ac32aab2.
 2020-08-11 23:51:59 +04:30
Ebrahim Byagowi 01ac32aab2 Remove autotools build support 2020-08-07 23:28:12 +04:30
Qunxin Liu 3c5bdd9bb8 [subset] GDEF AttachList subsetting support 2020-05-28 16:22:13 -07:00
Qunxin Liu 593e58c842 [subset] ChainContext subsetting fix: add lookup index remapping 2020-05-27 16:58:15 -07:00
Qunxin Liu d7c012a08e [subset] GDEF Variation Store: step 2 
do subset based on variation indices collected in step 1
 2020-05-21 12:43:24 -07:00
Qunxin Liu 8b5d3ebd96 [subset] GSUB5/GPOS7 Contextual Subst/Pos Subtbale Subsetting support 2020-05-20 15:12:54 -07:00
Qunxin Liu 5ad761b943 [subset] GDEF MarkGlyphSets subsetting support 2020-02-26 15:15:21 -08:00
Garret Rieger 411225426f Fix glyph closure for alternate substitution. 
It was not filtering on the glyphs to be retained.
 2020-02-21 13:01:23 +03:30
Qunxin Liu eb7849a806 [subset] GPOS6 MarkToMark subsetting support 2020-02-06 10:46:05 -08:00
Qunxin Liu 82afc75835 [subset] GPOS4 MarkBase subsetting support 2020-02-06 10:46:05 -08:00
Ebrahim Byagowi a7f694d4b0 Merge branch 'subset_cblc' into master 2020-02-05 16:31:21 +03:30
ckitagawa e128f80278 parent 777ba47b50 
author ckitagawa <ckitagawa@chromium.org> 1579631743 -0500
committer ckitagawa <ckitagawa@chromium.org> 1580506176 -0500

[subset] Add CBLC support
 2020-01-31 16:37:30 -05:00
Qunxin Liu b6a8f5e63c [subset] CMAP table subsetting fix 
Not all codepoints smaller than 0xFFFF go to cmap4 table.
Only subset codepoints existing in each table.
This will also make harfbuzz consistent with fontTools' behavior
 2020-01-31 10:49:44 -08:00
ckitagawa ed857c4680 [subset] Add COLR support 2020-01-28 15:35:53 -05:00
ckitagawa 43b6c865ae [subset] Support sbix subsetting 2020-01-15 13:36:01 -08:00
Qunxin Liu 1f0a9d9be9 [subset] GPOS Lookup Type 2: PairPos 2019-10-21 12:35:28 -07:00
Qunxin Liu b66094ada0 [subset] GSUB Lookup Type 6: ChainContextSubst 2019-10-18 16:52:55 -07:00
Qunxin Liu b0c3eb06b6 [subset] GPOS Lookup Type 3: CursivePos 2019-09-25 05:43:25 +09:00
Qunxin Liu bf66d1bf58 [subset] Add integration tests for cmap14 2019-09-20 07:55:11 +09:00
Qunxin Liu 321d5588d4 [subset] Add subsetting for GPOS Lookup Type 1: Single Adjustment Positioning Subtable 2019-08-06 14:06:35 -07:00
Michiharu Ariza 82d4bfb8f3 enable cff subset tests 
add Unicode UCS-4 cmap
fix Unicode bits in OS/2
add Unicode cmap sub-table in SourceHanSans-Regular_subset.otf
regenerate cff subset test expected results
 2019-06-14 11:08:59 -07:00