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

featureVars: Use new exceptions

Browse Source
This commit is contained in:
Nikolaus Waxweiler 2020-02-11 13:54:08 +00:00 committed by Nikolaus Waxweiler
parent 5b5c964b0f
commit af0567f847
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
Lib/fontTools/varLib/featureVars.py
View File

@ -10,6 +10,8 @@ from fontTools.ttLib.tables import otTables as ot
from fontTools.otlLib.builder import buildLookup, buildSingleSubstSubtable
from collections import OrderedDict
from .errors import VarLibValidationError
def addFeatureVariations(font, conditionalSubstitutions, featureTag='rvrn'):
"""Add conditional substitutions to a Variable Font.
@ -312,7 +314,10 @@ def addFeatureVariationsRaw(font, conditionalSubstitutions, featureTag='rvrn'):
for conditionSet, substitutions in conditionalSubstitutions:
conditionTable = []
for axisTag, (minValue, maxValue) in sorted(conditionSet.items()):
assert minValue < maxValue
if minValue > maxValue:
raise VarLibValidationError(
"A condition set has a minimum value above the maximum value."
)
ct = buildConditionTable(axisIndices[axisTag], minValue, maxValue)
conditionTable.append(ct)