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40 Commits

Author SHA1 Message Date
Behdad Esfahbod 8450f43ae1 [buffer] HB_NODISCARD next_glyph() 2021-03-15 16:01:35 -06:00
Behdad Esfahbod 34a1204f10 [buffer] HB_NODISCARD output_glyph() 
Also, generalize and use replace_glyphs() in morx where output_glyph() was used
in a loop.
 2021-03-15 16:01:35 -06:00
Behdad Esfahbod 3f1998a065 [buffer] HB_NODISCARD replace_glyph() 2021-03-15 13:33:44 -06:00
Behdad Esfahbod 7aad53657e [config] Add HB_NO_OT_SHAPE / HB_NO_OT 
Part of https://github.com/harfbuzz/harfbuzz/issues/1652
 2019-06-26 13:21:03 -07:00
Behdad Esfahbod 227d85e138 Minor 2019-05-10 23:16:14 -07:00
Behdad Esfahbod fe0018f7ef Add HB_NO_OT_SHAPE_COMPLEX_THAI_FALLBACK 
Part of https://github.com/harfbuzz/harfbuzz/issues/1652
 2019-04-12 09:35:29 -04:00
Behdad Esfahbod 17335a8161 Clean up buffer->swap_buffers() calls 
That function checks for buffer->successful already.  No need
to check at call site.
 2018-11-04 02:25:07 -05:00
Behdad Esfahbod 4eea2e279b [thai] Set continuation on decomposed nikhahit 2018-10-03 20:19:42 +02:00
Behdad Esfahbod 1b8d5e9991 [thai] Minor 2018-10-03 15:31:33 +02:00
Behdad Esfahbod 48c513fec9 Minor 2018-10-02 14:19:34 +02:00
Behdad Esfahbod c77ae40852 Rename hb-*private.hh to hb-*.hh 
Sorry for the noise, downstream custom builders.  Please adjust.
 2018-08-25 22:36:36 -07:00
Behdad Esfahbod 7185b273b3 Rename in_error to !successful 
Towards possibly using Null pool for some nil objects.
 2018-05-31 20:03:34 -07:00
Ebrahim Byagowi f24b0b9728 Update the links and revive the dead ones 2018-04-12 13:44:32 +04:30
Behdad Esfahbod 7036f1d22c [ot] Remove shaper name 
In ten years we never used them...
 2017-10-27 14:42:59 -06:00
Behdad Esfahbod dbdbfe3d7b Use nullptr instead of NULL 2017-10-15 12:11:08 +02:00
Behdad Esfahbod ab8d70ec70 [arabic] Implement Unicode Arabic Mark Ordering Algorithm UTR#53 
Fixes https://github.com/behdad/harfbuzz/issues/509
 2017-10-04 14:47:10 +02:00
Behdad Esfahbod e43aad5552 [unsafe-to-break] Flag in Thai PUA shaping 2017-08-10 20:54:15 -07:00
Ebrahim Byagowi 3b0e47ca00 Fix arm-none-eabi build (fixes #451) (#496) 2017-06-19 14:47:09 +04:30
Behdad Esfahbod e2b878055b Disable OTL processing for Hebrew if GPOS doesn't have Hebrew subtable 
New approach to fix this:
69f9fbc420

Previous approach was reverted as it was too broad.  See context:
https://github.com/behdad/harfbuzz/issues/347#issuecomment-267838368

With U+05E9,U+05B8,U+05C1,U+05DC and Arial Unicode, we now (correctly) disable
GDEF and GPOS, so we get results very close to Uniscribe, but slightly different
since our fallback position logic is not exactly the same:

Before:		[gid1166=3+991|gid1142=0+737|gid5798=0+1434]
After:		[gid1166=3+991|gid1142=0@402,-26+0|gid5798=0+1434]
Uniscribe:	[gid1166=3+991|gid1142=0@348,0+0|gid5798=0+1434]
 2016-12-22 14:43:23 -06:00
Behdad Esfahbod d14fea4bdc Remove default clause in minor switch statements 
Bending to clang warnings...
https://bugs.chromium.org/p/chromium/issues/detail?id=593057
 2016-03-08 12:16:41 -08:00
Behdad Esfahbod b3582a8ee8 Change default mark advance zeroing behavior from Unicode to GDEF 
See thread at:
https://lists.freedesktop.org/archives/harfbuzz/2016-February/005462.html
 2016-02-10 18:10:15 +07:00
Behdad Esfahbod fc06cff40f Remove HB_OT_SHAPE_ZERO_WIDTH_MARKS_DEFAULT 
The DEFAULT naming wasn't helpful, so just remove it.
 2015-12-17 17:47:35 +00:00
Behdad Esfahbod abadc1717d Try to better handle OOM situations 
Fixes assert fail in https://github.com/behdad/harfbuzz/issues/161
with libharfbuzz-fuzzing.
 2015-11-18 17:52:08 -08:00
Behdad Esfahbod 136863371c Add new shaper method postprocess_glyphs() 
Unused currently.  To be used for Syriac stretch implementation.

https://github.com/behdad/harfbuzz/issues/141
 2015-11-05 13:24:15 -08:00
Behdad Esfahbod 8259669fbd Minor 2015-11-02 17:44:05 -08:00
Behdad Esfahbod 305d2fbf5a Add HB_FALLTHROUGH 
Borrowed from https://bugzilla.mozilla.org/show_bug.cgi?id=1215411
 2015-10-21 11:04:28 -02:00
Behdad Esfahbod bdc8215949 [thai] Respect cluster-level > 0 2015-09-01 16:24:54 +01:00
Behdad Esfahbod 7627100f42 Mark unsigned integer literals with the u suffix 
Simplifies hb_in_range() calls as the type can be inferred.
The rest is obsessiveness, I admit.
 2014-07-11 16:22:13 -04:00
Jonathan Kew 80f7405a52 [Thai] set the correct general category on Nikhahit when decomposing Sara-Am. 2014-06-12 18:25:58 -04:00
Behdad Esfahbod 6300cd7253 [ot] Define HB_OT_SHAPE_ZERO_WIDTH_MARKS_DEFAULT 2013-12-31 16:38:47 +08:00
Behdad Esfahbod 3d6ca0d32e [ot] Simplify normalization_preference again 
No shaper has more than one behavior re this, so no need for a callback.
 2013-12-31 16:35:37 +08:00
Behdad Esfahbod 71b4c999a5 Revert "Zero marks by GDEF for Tibetan" 
This reverts commit d5bd0590ae.

The reasoning behind that logic was flawed and made under
a misunderstanding of the original problem, and caused
regressions as reported by Jonathan Kew in thread titled
"tibetan marks" in Oct 2013.  Apparently I have had fixed
the original problem with this commit:

  7e08f1258d

So, revert the faulty commit and everything seems to be in good
shape.
 2013-10-28 00:43:27 +01:00
Behdad Esfahbod d5bd0590ae Zero marks by GDEF for Tibetan 
See:
http://lists.freedesktop.org/archives/harfbuzz/2013-April/003101.html
 2013-10-18 18:17:29 +02:00
Behdad Esfahbod 127daf15e0 Arabic mark width-zeroing regression 
Mozilla Bug 873902 - Display Arabic text with diacritics is bad
https://bugzilla.mozilla.org/show_bug.cgi?id=873902
 2013-05-20 09:11:35 -04:00
Behdad Esfahbod 568000274c Adjust mark advance-width zeroing logic for Myanmar 
Before, we were zeroing advance width of attached marks for
non-Indic scripts, and not doing it for Indic.

We have now three different behaviors, which seem to better
reflect what Uniscribe is doing:

  - For Indic, no explicit zeroing happens whatsoever, which
    is the same as before,

  - For Myanmar, zero advance width of glyphs marked as marks
    *in GDEF*, and do that *before* applying GPOS.  This seems
    to be what the new Win8 Myanmar shaper does,

  - For everything else, zero advance width of glyphs that are
    from General_Category=Mn Unicode characters, and do so
    before applying GPOS.  This seems to be what Uniscribe does
    for Latin at least.

With these changes, positioning of all tests matches for Myanmar,
except for the glitch in Uniscribe not applying 'mark'.  See preivous
commit.
 2013-02-12 09:44:57 -05:00
Behdad Esfahbod 0beb66e3a6 Fix warnings 2012-12-05 19:14:28 -05:00
Behdad Esfahbod d1aa143ca4 [Thai] Remove U+0E2C from "AC" consonants 
WinXP doesn't include it.
 2012-11-15 15:38:08 -08:00
Behdad Esfahbod 1eb3e94fe9 [Thai] Implement PUA-based fallback shaping 
As explained here:

  http://linux.thai.net/~thep/th-otf/shaping.html

Our output now matches Uniscribe for old fonts (eg. XP Tahoma) with no
Thai GSUB table.
 2012-11-14 17:53:09 -08:00
Behdad Esfahbod 851784f837 Improve shaper selection 2012-11-14 17:53:09 -08:00
Behdad Esfahbod 43f04a7456 Move Thai shaper into a separate file 2012-11-14 15:51:54 -08:00