kerning

fontTools.ufoLib.kerning.lookupKerningValue(pair, kerning, groups, fallback=0, glyphToFirstGroup=None, glyphToSecondGroup=None)[source]

Note: This expects kerning to be a flat dictionary of kerning pairs, not the nested structure used in kerning.plist.

>>> groups = {
...     "public.kern1.O" : ["O", "D", "Q"],
...     "public.kern2.E" : ["E", "F"]
... }
>>> kerning = {
...     ("public.kern1.O", "public.kern2.E") : -100,
...     ("public.kern1.O", "F") : -200,
...     ("D", "F") : -300
... }
>>> lookupKerningValue(("D", "F"), kerning, groups)
-300
>>> lookupKerningValue(("O", "F"), kerning, groups)
-200
>>> lookupKerningValue(("O", "E"), kerning, groups)
-100
>>> lookupKerningValue(("O", "O"), kerning, groups)
0
>>> lookupKerningValue(("E", "E"), kerning, groups)
0
>>> lookupKerningValue(("E", "O"), kerning, groups)
0
>>> lookupKerningValue(("X", "X"), kerning, groups)
0
>>> lookupKerningValue(("public.kern1.O", "public.kern2.E"),
...     kerning, groups)
-100
>>> lookupKerningValue(("public.kern1.O", "F"), kerning, groups)
-200
>>> lookupKerningValue(("O", "public.kern2.E"), kerning, groups)
-100
>>> lookupKerningValue(("public.kern1.X", "public.kern2.X"), kerning, groups)
0