def __init__(self, ufo, ttFont=None, glyphSet=None, **kwargs):
"""
Args:
ufo: an object representing a UFO (defcon.Font or equivalent)
containing the features source data.
ttFont: a fontTools TTFont object where the generated OpenType
tables are added. If None, an empty TTFont is used, with
the same glyph order as the ufo object.
glyphSet: a (optional) dict containing pre-processed copies of
the UFO glyphs.
"""
self.ufo = ufo
if ttFont is None:
from fontTools.ttLib import TTFont
from ufo2ft.util import makeOfficialGlyphOrder
ttFont = TTFont()
ttFont.setGlyphOrder(makeOfficialGlyphOrder(ufo))
self.ttFont = ttFont
glyphOrder = ttFont.getGlyphOrder()
if glyphSet is not None:
assert set(glyphOrder) == set(glyphSet.keys())
else:
glyphSet = ufo
self.glyphSet = OrderedDict((gn, glyphSet[gn]) for gn in glyphOrder)
def makeOfficialGlyphOrder(self, glyphOrder):
"""
Make the final glyph order.
**This should not be called externally.** Subclasses
may override this method to handle the order creation
in a different way if desired.
"""
return makeOfficialGlyphOrder(self.allGlyphs, glyphOrder)
def subset_otf_from_ufo(self, otf_path, ufo):
"""Subset a font using export flags set by glyphsLib.
There are two more settings that can change export behavior:
"Export Glyphs" and "Remove Glyphs", which are currently not supported
for complexity reasons. See
https://github.com/googlei18n/glyphsLib/issues/295.
"""
from fontTools import subset
# ufo2ft always inserts a ".notdef" glyph as the first glyph
ufo_order = makeOfficialGlyphOrder(ufo)
if ".notdef" not in ufo_order:
ufo_order.insert(0, ".notdef")
ot_order = TTFont(otf_path).getGlyphOrder()
assert ot_order[0] == ".notdef"
assert len(ufo_order) == len(ot_order)
for key in (KEEP_GLYPHS_NEW_KEY, KEEP_GLYPHS_OLD_KEY):
keep_glyphs_list = ufo.lib.get(key)
if keep_glyphs_list is not None:
keep_glyphs = set(keep_glyphs_list)
break
else:
keep_glyphs = None
include = []
for source_name, binary_name in zip(ufo_order, ot_order):
if keep_glyphs and source_name not in keep_glyphs:
continue
if source_name in ufo:
exported = ufo[source_name].lib.get(GLYPH_EXPORT_KEY, True)
if not exported:
continue
include.append(binary_name)
# copied from nototools.subset
opt = subset.Options()
opt.name_IDs = ['*']
opt.name_legacy = True
opt.name_languages = ['*']
opt.layout_features = ['*']
opt.notdef_outline = True
opt.recalc_bounds = True
opt.recalc_timestamp = True
opt.canonical_order = True
opt.glyph_names = True
font = subset.load_font(otf_path, opt, lazy=False)
subsetter = subset.Subsetter(options=opt)
subsetter.populate(glyphs=include)
subsetter.subset(font)
subset.save_font(font, otf_path, opt)
def set_context(self, font):
ctx = super(MarkFeatureWriter, self).set_context(font)
glyphOrder = makeOfficialGlyphOrder(font)
ctx.glyphSet = OrderedDict(((gn, font[gn]) for gn in glyphOrder))
ctx.accentGlyphNames = set()
self.setupAnchorPairs()
return ctx
def getOrderedGlyphSet(self):
"""Return OrderedDict[glyphName, glyph] sorted by glyphOrder.
"""
compiler = self.context.compiler
if compiler is not None:
return compiler.glyphSet
from ufo2ft.util import makeOfficialGlyphOrder
glyphSet = self.context.font
glyphOrder = makeOfficialGlyphOrder(self.context.font)
return OrderedDict((gn, glyphSet[gn]) for gn in glyphOrder)
def _makeOrderedGlyphSet(font, compiler=None):
""" Return glyph set as an OrderedDict sorted by glyphOrder to write
mark/mkmk classes and rules in a deterministic order.
"""
if compiler is not None:
glyphSet = compiler.glyphSet
glyphOrder = compiler.ttFont.getGlyphOrder()
else:
from ufo2ft.util import makeOfficialGlyphOrder
glyphSet = font
glyphOrder = makeOfficialGlyphOrder(font)
return OrderedDict((gn, glyphSet[gn]) for gn in glyphOrder)
def _makeOrderedGlyphSet(font, compiler=None):
""" Return glyph set as an OrderedDict sorted by glyphOrder to write
mark/mkmk classes and rules in a deterministic order.
"""
if compiler is not None:
glyphSet = compiler.glyphSet
glyphOrder = compiler.ttFont.getGlyphOrder()
else:
from ufo2ft.util import makeOfficialGlyphOrder
glyphSet = font
glyphOrder = makeOfficialGlyphOrder(font)
return OrderedDict((gn, glyphSet[gn]) for gn in glyphOrder)
def getOrderedGlyphSet(self):
"""Return OrderedDict[glyphName, glyph] sorted by glyphOrder."""
compiler = self.context.compiler
if compiler is not None:
return compiler.glyphSet
from ufo2ft.util import _GlyphSet, makeOfficialGlyphOrder
font = self.context.font
# subset glyphSet by skipExportGlyphs if any
glyphSet = _GlyphSet.from_layer(
font,
skipExportGlyphs=set(font.lib.get("public.skipExportGlyphs", [])),
)
glyphOrder = makeOfficialGlyphOrder(glyphSet, font.glyphOrder)
return OrderedDict((gn, glyphSet[gn]) for gn in glyphOrder)
def subset_otf_from_ufo(self, otf_path, ufo):
"""Subset a font using "Keep Glyphs" custom parameter and export flags as set
by glyphsLib.
"Export Glyphs" and "Remove Glyphs" are currently not supported:
https://github.com/googlei18n/glyphsLib/issues/295.
"""
from fontTools import subset
# we must exclude from the final UFO glyphOrder all the glyphs that were not
# exported to OTF because included in 'public.skipExportGlyphs'
skip_export_glyphs = set(ufo.lib.get("public.skipExportGlyphs", ()))
exported_glyphs = dict.fromkeys(g for g in ufo.keys()
if g not in skip_export_glyphs)
ufo_order = makeOfficialGlyphOrder(exported_glyphs,
glyphOrder=ufo.glyphOrder)
# ufo2ft always inserts a ".notdef" glyph as the first glyph
if ".notdef" not in exported_glyphs:
ufo_order.insert(0, ".notdef")
ot_order = TTFont(otf_path).getGlyphOrder()
assert ot_order[0] == ".notdef"
assert len(ufo_order) == len(ot_order)
for key in (KEEP_GLYPHS_NEW_KEY, KEEP_GLYPHS_OLD_KEY):
keep_glyphs_list = ufo.lib.get(key)
if keep_glyphs_list is not None:
keep_glyphs = set(keep_glyphs_list)
break
else:
keep_glyphs = None
include = []
for source_name, binary_name in zip(ufo_order, ot_order):
if keep_glyphs and source_name not in keep_glyphs:
continue
if source_name in ufo:
exported = ufo[source_name].lib.get(GLYPH_EXPORT_KEY, True)
if not exported:
continue
include.append(binary_name)
# copied from nototools.subset
opt = subset.Options()
opt.name_IDs = ["*"]
opt.name_legacy = True
opt.name_languages = ["*"]
opt.layout_features = ["*"]
opt.notdef_outline = True
opt.recalc_bounds = True
opt.recalc_timestamp = True
opt.canonical_order = True
opt.glyph_names = True
font = subset.load_font(otf_path, opt, lazy=False)
subsetter = subset.Subsetter(options=opt)
subsetter.populate(glyphs=include)
subsetter.subset(font)
subset.save_font(font, otf_path, opt)
