AuroraMiddleware/harfbuzz
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Don't compose Hangul jamo

Browse Source 
See thread "an issue regarding discrepancy between Korean and Unicode
standards" on the mailing list for the rationale.  In short: Uniscribe
doesn't, so fonts are designed to work without it.
This commit is contained in:
Behdad Esfahbod 2013-04-04 23:06:54 -04:00
parent 1f97060985
commit 269de14dda
3 changed files with 5 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/hb-ot-shape-complex-default.cc
View File

@ -74,12 +74,6 @@ collect_features_default (hb_ot_shape_planner_t *plan)
static hb_ot_shape_normalization_mode_t
normalization_preference_default (const hb_segment_properties_t *props)
{
switch ((hb_tag_t) props->script)
{
/* Unicode-1.1 additions */
case HB_SCRIPT_HANGUL:
return HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_FULL;
}
return HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS;
}

1
src/hb-ot-shape-normalize-private.hh
View File

@ -41,7 +41,6 @@ enum hb_ot_shape_normalization_mode_t {
HB_OT_SHAPE_NORMALIZATION_MODE_DECOMPOSED,
HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS, /* never composes base-to-base */
HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS_NO_SHORT_CIRCUIT, /* always fully decomposes and then recompose back */
HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_FULL, /* including base-to-base composition */
HB_OT_SHAPE_NORMALIZATION_MODE_DEFAULT = HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS
};

11
src/hb-ot-shape-normalize.cc
View File

@ -351,12 +351,11 @@ _hb_ot_shape_normalize (const hb_ot_shape_plan_t *plan,
while (buffer->idx < count)
{
hb_codepoint_t composed, glyph;
if (/* If mode is NOT COMPOSED_FULL (ie. it's COMPOSED_DIACRITICS), we don't try to
* compose a non-mark character with it's preceding starter. This is just an
* optimization to avoid trying to compose every two neighboring glyphs in most
* scripts. */
(mode == HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_FULL ||
HB_UNICODE_GENERAL_CATEGORY_IS_MARK (_hb_glyph_info_get_general_category (&buffer->cur()))) &&
if (/* We don't try to compose a non-mark character with it's preceding starter.
* This is both an optimization to avoid trying to compose every two neighboring
* glyphs in most scripts AND a desired feature for Hangul. Apparently Hangul
* fonts are not designed to mix-and-match pre-composed syllables and Jamo. */
HB_UNICODE_GENERAL_CATEGORY_IS_MARK (_hb_glyph_info_get_general_category (&buffer->cur())) &&
/* If there's anything between the starter and this char, they should have CCC
* smaller than this character's. */
(starter == buffer->out_len - 1 ||