0ed2df3f22
When varLib was updated for avar table, this was not. Share code such that they don't get out of sync again. All of this to be made into proper API some time...
76 lines
2.1 KiB
Python
76 lines
2.1 KiB
Python
"""
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Instantiate a variation font. Run, eg:
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$ python mutator.py ./NotoSansArabic-VF.ttf wght=140 wdth=85
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"""
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from __future__ import print_function, division, absolute_import
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from fontTools.misc.py23 import *
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from fontTools.ttLib import TTFont
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from fontTools.ttLib.tables._g_l_y_f import GlyphCoordinates
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from fontTools.varLib import _GetCoordinates, _SetCoordinates
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from fontTools.varLib.models import VariationModel, supportScalar, normalizeLocation
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import os.path
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def main(args=None):
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if args is None:
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import sys
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args = sys.argv[1:]
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varfilename = args[0]
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locargs = args[1:]
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outfile = os.path.splitext(varfilename)[0] + '-instance.ttf'
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loc = {}
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for arg in locargs:
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tag,val = arg.split('=')
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assert len(tag) <= 4
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loc[tag.ljust(4)] = float(val)
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print("Location:", loc)
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print("Loading variable font")
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varfont = TTFont(varfilename)
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fvar = varfont['fvar']
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axes = {a.axisTag:(a.minValue,a.defaultValue,a.maxValue) for a in fvar.axes}
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# TODO Apply avar
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# TODO Round to F2Dot14?
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loc = normalizeLocation(loc, axes)
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# Location is normalized now
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print("Normalized location:", loc)
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gvar = varfont['gvar']
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glyf = varfont['glyf']
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# get list of glyph names in gvar sorted by component depth
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glyphnames = sorted(
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gvar.variations.keys(),
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key=lambda name: (
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glyf[name].getCompositeMaxpValues(glyf).maxComponentDepth
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if glyf[name].isComposite() else 0,
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name))
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for glyphname in glyphnames:
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variations = gvar.variations[glyphname]
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coordinates,_ = _GetCoordinates(varfont, glyphname)
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for var in variations:
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scalar = supportScalar(loc, var.axes)
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if not scalar: continue
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# TODO Do IUP / handle None items
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coordinates += GlyphCoordinates(var.coordinates) * scalar
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_SetCoordinates(varfont, glyphname, coordinates)
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print("Removing variable tables")
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for tag in ('avar','cvar','fvar','gvar','HVAR','MVAR','VVAR','STAT'):
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if tag in varfont:
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del varfont[tag]
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print("Saving instance font", outfile)
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varfont.save(outfile)
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if __name__ == "__main__":
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import sys
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if len(sys.argv) > 1:
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sys.exit(main())
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import doctest
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sys.exit(doctest.testmod().failed)
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