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[varLib.avarPlanner] A couple of error messages

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This commit is contained in:
Behdad Esfahbod 2023-07-23 10:04:28 -06:00
parent 3662efc1e9
commit 1a36440d3d
1 changed files with 22 additions and 15 deletions
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37
Lib/fontTools/varLib/avarPlanner.py
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@ -62,7 +62,8 @@ def planWeightAxis(
if "avar" in font:
log.debug("Checking that font doesn't have weight mapping already.")
existingMapping = font["avar"].segments["wght"]
assert not existingMapping or existingMapping == {-1: -1, 0: 0, +1: +1}
if existingMapping and existingMapping != {-1: -1, 0: 0, +1: +1}:
log.error("Font already has a `avar` weight mapping. Remove it.")
out = {}
outNormalized = {}
@ -160,6 +161,9 @@ def main(args=None):
)
font = TTFont(options.font)
if not "fvar" in font:
log.error("Not a variable font.")
sys.exit(1)
fvar = font["fvar"]
wghtAxis = slntAxis = None
for axis in fvar.axes:
@ -170,29 +174,32 @@ def main(args=None):
if "avar" in font:
existingMapping = font["avar"].segments["wght"]
font["avar"].segments["wght"] = {}
if wghtAxis:
font["avar"].segments["wght"] = {}
else:
existingMapping = None
out, outNormalized = planWeightAxis(
font, wghtAxis.minValue, wghtAxis.defaultValue, wghtAxis.maxValue
)
if options.plot:
from matplotlib import pyplot
pyplot.plot(
sorted(outNormalized), [outNormalized[k] for k in sorted(outNormalized)]
if wghtAxis:
out, outNormalized = planWeightAxis(
font, wghtAxis.minValue, wghtAxis.defaultValue, wghtAxis.maxValue
)
pyplot.show()
if existingMapping is not None:
log.info("Existing weight mapping:\n%s", pformat(existingMapping))
if options.plot:
from matplotlib import pyplot
pyplot.plot(
sorted(outNormalized), [outNormalized[k] for k in sorted(outNormalized)]
)
pyplot.show()
if existingMapping is not None:
log.info("Existing weight mapping:\n%s", pformat(existingMapping))
if "avar" not in font:
font["avar"] = newTable("avar")
avar = font["avar"]
avar.segments["wght"] = outNormalized
if wghtAxis:
avar.segments["wght"] = outNormalized
designspaceSnippet = (
' <axis tag="wght" name="Weight" minimum="%g" maximum="%g" default="%g">\n'