shadowfacts/fonttools
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Implement CFF subsetting

Browse Source
This commit is contained in:
Behdad Esfahbod 2013-08-13 15:46:37 -04:00
parent 9ec5215bd9
commit 1a4e72ec0a
1 changed files with 37 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
pyotlss.py
View File

@ -1040,9 +1040,45 @@ def prune_post_subset (self, options):
v.program.fromBytecode([])
return True
@add_method(fontTools.ttLib.getTableClass('CFF '))
def prune_pre_subset (self, s):
# TODO Check that there's only one font? Prune others?
# TODO Prune names etc?
return True
@add_method(fontTools.ttLib.getTableClass('CFF '))
def subset_glyphs (self, s):
assert 0, "unimplemented"
cff = self.cff
for fontname in cff.keys():
font = cff[fontname]
cs = font.CharStrings
if cs.charStringsAreIndexed:
indices = [i for i,g in enumerate (font.charset) if g in s.glyphs]
# Load all glyphs
for g in font.charset:
if g not in s.glyphs: continue
cs.getItemAndSelector (g)
csi = cs.charStringsIndex
csi.items = [csi.items[i] for i in indices]
csi.offsets = [] # Don't need it; loaded all glyphs
sel = font.FDSelect
sel.format = None
sel.gidArray = [font.FDSelect.gidArray[i] for i in indices]
cs.charStrings = {g:v for g,v in cs.charStrings.items() if g in s.glyphs}
# Remap indices
cs.charStrings = {g:indices.index (v) for g,v in cs.charStrings.items()}
else:
cs.charStrings = {g:v for g,v in cs.charStrings.items() if g in s.glyphs}
font.charset = [g for g in font.charset if g in s.glyphs]
font.numGlyphs = len (font.charset)
return bool (any (cff[fontname].numGlyphs for fontname in cff.keys()))
@add_method(fontTools.ttLib.getTableClass('glyf'))
def prune_post_subset (self, options):
if not options.hinting:
pass # Drop hints
return True
@add_method(fontTools.ttLib.getTableClass('cmap'))
def closure_glyphs (self, s):