Commit Graph

17 Commits

Author SHA1 Message Date
Behdad Esfahbod
1c6a057dd1 Add tests for previous commit 2015-11-26 18:48:30 -05:00
Behdad Esfahbod
04fd8517f8 Add tests for hyphen fallback
U+2011 is <noBreak> equivaent of U+2010, so we should do the fallback
for it.  Currently fails.
2015-11-04 17:39:26 -08:00
Behdad Esfahbod
7793aad946 Normalize various spaces to space if font doesn't support
This resurrects the space fallback feature, after I disabled
the compatibility decomposition.  Now I can release HarfBuzz
again without breaking Pango!

It also remembers which space character it was, such that later
on we can approximate the width of this particular space
character.  That part is not implemented yet.

We normalize all GC=Zs chars except for U+1680 OGHA SPACE MARK,
which is better left alone.
2015-11-04 15:51:41 -08:00
Behdad Esfahbod
34379b49e6 Add test for previous fix 2015-10-09 12:34:02 -04:00
Behdad Esfahbod
7368da6724 [test] Add test for cursive-positioning with mixed directions
Fails now.  Fix coming.  See thread "Issue with cursive attachment"
started by Khaled.  Test fonts were made by modifying test font
from Khaled to add more anchors.
2015-08-25 20:29:36 +01:00
Behdad Esfahbod
f3792342f6 [tests] Add test for fallback positioning with cluster_level > 0
For https://github.com/behdad/harfbuzz/pull/123
Currently fails.  Fix coming.
2015-08-08 18:03:16 +02:00
Behdad Esfahbod
c81d957a26 [test] Add tests for improved 'vert' feature 2015-07-23 12:50:48 +01:00
Behdad Esfahbod
582069172c Add test case for deleting default ignorables with positioning 2015-07-22 18:44:59 +01:00
Behdad Esfahbod
e6f80fa104 [indic] Allow ZWJ/ZWNJ before SM
In Oriya, a ZWJ/ZWNJ might be added before candrabindu to encourage
or stop ligation of the candrabindu.  This is clearly specified in
the Unicode section on Oriya.  Allow it there.  Note that Uniscribe
doesn't allow this.

Micro tests added using Noto Sans Oriya draft.

No changes in numbers.  Currently at:

BENGALI: 353725 out of 354188 tests passed. 463 failed (0.130722%)
DEVANAGARI: 707307 out of 707394 tests passed. 87 failed (0.0122987%)
GUJARATI: 366349 out of 366457 tests passed. 108 failed (0.0294714%)
GURMUKHI: 60732 out of 60747 tests passed. 15 failed (0.0246926%)
KANNADA: 951190 out of 951913 tests passed. 723 failed (0.0759523%)
KHMER: 299070 out of 299124 tests passed. 54 failed (0.0180527%)
MALAYALAM: 1048147 out of 1048334 tests passed. 187 failed (0.0178378%)
ORIYA: 42320 out of 42329 tests passed. 9 failed (0.021262%)
SINHALA: 271662 out of 271847 tests passed. 185 failed (0.068053%)
TAMIL: 1091753 out of 1091754 tests passed. 1 failed (9.15957e-05%)
TELUGU: 970555 out of 970573 tests passed. 18 failed (0.00185457%)
2014-12-10 12:05:24 -08:00
Behdad Esfahbod
d5e61470fa [arabic] Fix fallback shaping regression
Was broken in 615d00ea25.

Fixes https://github.com/behdad/harfbuzz/pull/48

Micro-test added.
2014-08-05 14:19:36 -04:00
Behdad Esfahbod
ac53443f1c [hangul] Don't apply 'calt'
See comments.

Micro-test added.
2014-07-31 18:54:43 -04:00
Behdad Esfahbod
6f2d9ba52a Add old-Myanmar shaper
Looks like Unsicribe responds to the 'mymr' tag by zeroing marks
GDEF_LATE instead of generic-shaper UNICODE_LATE.  Implement that.

Fixes
Bug 81775 - Incorrect Rendering with harfbuzz-ng myanmar unicode
https://bugs.freedesktop.org/show_bug.cgi?id=81775

Micro-test added based on Padauk.
2014-07-26 19:18:59 -04:00
Behdad Esfahbod
fc0daafab0 [indic] Handle old-spec Malayalam reordering with final Halant
See comment.

Micro-tests added.
2014-07-23 16:53:03 -04:00
Behdad Esfahbod
615d00ea25 [arabic] Apply init/medi/isol/fini/... in separate stages
Follows the order of the Arabic/Syriac specs.  Also don't stop
between rlig and calt in non-Arabic scripts.

Micro-tests for Arabic and Mongolian added for the latter.
2014-07-17 15:50:13 -04:00
Behdad Esfahbod
3b861421a7 Fix Mongolian Variation Selectors for fonts without GDEF
Originally we fixed those in 79d1007a50.
However, fonts like MongolianWhite don't have GDEF, but have IgnoreMarks
in their LigatureSubstitute init/etc features.  We were synthesizing a
GDEF class of mark for Mongolian Variation Selectors and as such the
ligature lookups where not matching.  Uniscribe doesn't do that.

I tried with more sophisticated fixes, like, if there is no GDEF and
a lookup-flag mismatch happens, instead of rejecting a match, try
skipping that glyph.  That surely produces some interesting behavior,
but since we don't want to support fonts missing GDEF more than we have
to, I went for this simpler fix which is to always mark
default-ignorables as base when synthesizing GDEF.

Micro-test added.

Fixes rest of https://bugs.freedesktop.org/show_bug.cgi?id=65258
2014-07-16 13:30:26 -04:00
Behdad Esfahbod
832a6f99b3 [indic] Don't reorder reph/pref if ligature was expanded
Normally if you want to, say, conditionally prevent a 'pref', you
would use blocking contextual matching.  Some designers instead
form the 'pref' form, then undo it in context.  To detect that
we now also remember glyphs that went through MultipleSubst.

In the only place that this is used, Uniscribe seems to only care
about the "last" transformation between Ligature and Multiple
substitions.  Ie. if you ligate, expand, and ligate again, it
moves the pref, but if you ligate and expand it doesn't.  That's
why we clear the MULTIPLIED bit when setting LIGATED.

Micro-test added.  Test: U+0D2F,0D4D,0D30 with font from:

[1]
https://code.google.com/a/google.com/p/noto-alpha/issues/detail?id=186#c29
2014-06-05 20:36:01 -04:00
Behdad Esfahbod
841e20d083 Add test suite for shaping results
The new test suite runs tests included under
hb/test/shaping/tests/*.tests, which themselves reference
font files stored by sha1sum under hb/test/shaping/fonts/sha1sum.
The fonts are produced using a subsetter to only include glyphs
needed to run the test.

Four initial tests are added for (Chain)Context matching,
of which three currently fail.
2013-10-14 18:54:51 +02:00