Commit Graph

121 Commits

Author SHA1 Message Date
Behdad Esfahbod d5c4edcdd6 [Indic] Apply presentation-forms features all at once
Seems like this is what Uniscribe is doing, and does not break any fonts
we tested (with Devanagari, Malayalam, Khmer, and Bengali), while fixing
some Ra Phala sequences for Bengali with Vrinda.  Fixes another 2% of
Bengali failures (a couple more to go).
2012-07-17 10:40:59 -04:00
Behdad Esfahbod af92b4cc90 [Indic] Disable 'kern' in Uniscribe bug compatibility mode
Uniscribe does not apply 'kern' in the Indic module.  Some of the Khmer
fonts they ship have small adjustments in the 'kern' table.  Disable
'kern' in the Indic module under Uniscribe bug compatibility mode.

Fixes some 10% of the Khmer failures.  Remains under 3% (excluding
dotted-circle ones).
2012-07-16 20:31:24 -04:00
Behdad Esfahbod d96838ef95 Allow complex shapers overriding common features
In a new callback...  Currently unused by all complex shapers.
2012-07-16 20:26:57 -04:00
Behdad Esfahbod df50b84740 [Indic] Categorize other Khmer marks
Mark them the same as the Register Shifters for now.  Need to rename
that category to something more sensible after all is settled.

Fixes another percent of Khmer failures.  Down to under 3%!
2012-07-16 20:14:50 -04:00
Behdad Esfahbod 8e7b5882fb [Indic] Recognize pre-base reordering Ra anywhere in the syllable
We were doing that only immediately after base.

Fixes another percent in the Khmer failures.  About three more to go...
2012-07-16 17:04:46 -04:00
Behdad Esfahbod 7d09c98a1f [Indic] Recognizer Register Shifter marks
Fixes another 6% of the Khmer failures.
2012-07-16 16:45:22 -04:00
Behdad Esfahbod 78818124b1 [Indic] Reoder pre-base reordering Ra
Brings down Malayalam failures from 14% down to 3%.
2012-07-16 15:49:08 -04:00
Behdad Esfahbod 1a1dbe9a27 [Indic] Rename 2012-07-16 15:41:33 -04:00
Behdad Esfahbod 46e645ec4b [Indic] Start implementing pre-base reordering 2012-07-16 15:30:05 -04:00
Behdad Esfahbod 921ce5b17d [Indic] Rename
No semantic change.
2012-07-16 15:26:56 -04:00
Behdad Esfahbod b504e060f0 [Indic] Implement After-Main Reph positioning
Almost...
2012-07-16 15:21:12 -04:00
Behdad Esfahbod 17d7de91d7 [Indic] Apply 'pref' to pre-base reodering Ra
No reordering yet.
2012-07-16 15:20:15 -04:00
Behdad Esfahbod 362d3db8d3 [Indic] Minor
Should not be any semantic change.  In preparation for implementing
pre-base reordering Ra.
2012-07-16 15:15:28 -04:00
Behdad Esfahbod 70fe77bb9a Minor 2012-07-16 14:52:18 -04:00
Behdad Esfahbod 2f903215c5 Minor 2012-07-16 13:54:43 -04:00
Behdad Esfahbod a3e04bee2c [Indic] Reorder virama only for old Indic spec 2012-07-16 13:47:19 -04:00
Behdad Esfahbod 0de771b72d [Indic] Categorize Khmer consonants 2012-07-16 13:39:36 -04:00
Behdad Esfahbod 29f106d7fb [Indic] Apply Above Forms 2012-07-16 12:05:35 -04:00
Behdad Esfahbod a2b471df82 Remove static initializers from indic 2012-06-05 15:17:44 -04:00
Behdad Esfahbod 9fc7a11469 Remove comma at the end of enum
As reported by Jonathan Kew on the list.
2012-06-04 08:28:19 -04:00
Behdad Esfahbod 27aba594c9 Minor 2012-05-24 15:00:01 -04:00
Behdad Esfahbod 1d6846db9e [Indic] Apply vatu feature after cjct
Testing with old Deva spec this reduces failures.
Test sequence: U+0915,U+094D,U+0930.
2012-05-13 18:09:29 +02:00
Behdad Esfahbod 617f4ac46f Refactor 2012-05-13 16:48:03 +02:00
Behdad Esfahbod 5e4e21fce4 Revert "[Indic] Refactoring"
This reverts commit 0831061efb.
2012-05-13 16:46:08 +02:00
Behdad Esfahbod 3f18236a03 Fix more warnings 2012-05-13 16:20:10 +02:00
Behdad Esfahbod 9f377ed321 Fix more unused-var warnings 2012-05-13 16:13:44 +02:00
Behdad Esfahbod eace47b173 Minor 2012-05-13 15:54:43 +02:00
Behdad Esfahbod 737dded2e0 Fix compiler warnings 2012-05-12 15:40:11 +02:00
Behdad Esfahbod 7f852b644b Fix compiler warnings 2012-05-11 23:10:31 +02:00
Behdad Esfahbod 6a091df9b4 [Indic] Disambiguate sub vs post vs above matras
Bengali is at *just* above 5% now.
2012-05-11 21:42:27 +02:00
Behdad Esfahbod 9d0d319a4a [Indic] Position Bengali Reph before matras 2012-05-11 21:36:32 +02:00
Behdad Esfahbod f893672511 [Indic] Start categorizing Reph per script 2012-05-11 21:10:03 +02:00
Behdad Esfahbod a913b024d8 [Indic] Apply 'init' feature for Bengali
Error down from 20% to 7%.
2012-05-11 20:59:26 +02:00
Behdad Esfahbod eed903b164 [Indic] Refactor for the arrival of 'init' feature
Yep, on Bengali now!
2012-05-11 20:50:53 +02:00
Behdad Esfahbod 18c06e189b [Indic] Add Uniscribe bug feature for dotted circle
For dotted-circle independent clusters, Uniscribe does no Reph shaping
for the exact sequence Ra+Halant+25CC.  Which also is the only possible
sequence with 25CC at the end.
2012-05-11 20:02:14 +02:00
Behdad Esfahbod 0831061efb [Indic] Refactoring 2012-05-11 19:07:58 +02:00
Behdad Esfahbod 7ea58db311 Minor 2012-05-11 18:58:57 +02:00
Behdad Esfahbod 3399a06e70 [Indic] Fix U+0952 and similar classification to match Uniscribe
See comments.
2012-05-11 17:54:26 +02:00
Behdad Esfahbod 11aa3ef18d [Indic] Treat U+0951..U+0954 all similar to U+0952 2012-05-11 17:30:48 +02:00
Behdad Esfahbod 892eb78782 [Indic] Implement Uniscribe Reph+Matra+Halant bug feature 2012-05-11 16:54:40 +02:00
Behdad Esfahbod 67ea29af49 [Indic] Add example of different Uniscribe behavior 2012-05-11 16:51:23 +02:00
Behdad Esfahbod ebe29733d4 [Indic] Add runtime Uniscribe bug compatibility mode!
Enable by setting envvar:

  HB_OT_INDIC_OPTIONS=uniscribe-bug-compatible

Plus, LeftMatra+Halant "feature".
2012-05-11 16:43:12 +02:00
Behdad Esfahbod 616e692e29 [Indic] Add #define UNISCRIBE_BUG_COMPATIBLE 1 2012-05-11 16:25:02 +02:00
Behdad Esfahbod 6782bdae3b [Indic] Fix Left Matra + Halant reordering
As can be seen in: U+092B,U+093F,U+094D
2012-05-11 16:23:43 +02:00
Behdad Esfahbod 3c2ea9481b Minor 2012-05-11 16:23:38 +02:00
Behdad Esfahbod 668c6046c1 [Indic] Apply Reph mask to all POS_REPH glyphs
Needed for upcoming changes to GSUB/GPOS mask matching.
2012-05-11 15:34:13 +02:00
Behdad Esfahbod cee7187447 [Indic] Move syllable tracking from Indic to generic layer
This is to incorporate it into GSUB/GPOS processing.
2012-05-11 11:41:39 +02:00
Behdad Esfahbod 3bf27a9f0e [Indic] Disable conjuncts when a ZWJ happens
Not that the code makes any difference since the presence of ZWJ itself
causes the ligature to fail to match anyway.
2012-05-11 11:17:23 +02:00
Behdad Esfahbod c6d904d67d [Indic] Fix bitops typo!
Another 1000 down!
2012-05-11 11:07:40 +02:00
Behdad Esfahbod 02b2922fbf [Indic] Towards better Reph positioning
Fixed for Deva cases with two full-form consonants.  Failures **way** down.
Not much left to go :-).
2012-05-10 21:44:50 +02:00