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[subset] Implement format14 variation selectors

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This commit is contained in:
Behdad Esfahbod 2014-05-09 17:48:02 -04:00
parent da223b8fa8
commit e898881ed1
1 changed files with 15 additions and 8 deletions
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17
Lib/fontTools/subset.py
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@ -1698,14 +1698,19 @@ def prune_post_subset(self, options):
def closure_glyphs(self, s):
tables = [t for t in self.tables if t.isUnicode()]
for u in s.unicodes_requested:
found = False
for table in tables:
if table.format == 14:
for l in table.uvsDict.values():
# TODO(behdad) Speed this up!
gids = [g for uc,g in l if u == uc and g is not None]
s.glyphs.update(gids)
# Intentionally not setting found=True here.
else:
if u in table.cmap:
s.glyphs.add(table.cmap[u])
found = True
break
if not found:
s.log("No glyph for Unicode value %s; skipping." % u)
s.log("No default glyph for Unicode %04X found." % u)
@_add_method(ttLib.getTableClass('cmap'))
def prune_pre_subset(self, options):
@ -1731,8 +1736,10 @@ def subset_glyphs(self, s):
except AttributeError:
pass
if t.format == 14:
# TODO(behdad) XXX We drop all the default-UVS mappings(g==None).
t.uvsDict = dict((v,[(u,g) for u,g in l if g in s.glyphs])
# TODO(behdad) We drop all the default-UVS mappings for glyphs_requested.
# I don't think we care about that...
t.uvsDict = dict((v,[(u,g) for u,g in l
if g in s.glyphs or u in s.unicodes_requested])
for v,l in t.uvsDict.items())
t.uvsDict = dict((v,l) for v,l in t.uvsDict.items() if l)
elif t.isUnicode():