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designspaceLib, findDefault: consider axis mapping

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This commit is contained in:
Nikolaus Waxweiler 2019-03-10 22:12:06 +00:00
parent 9efbb0e74e
commit c4899330c5
2 changed files with 74 additions and 5 deletions
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21
Lib/fontTools/designspaceLib/__init__.py
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@ -1176,15 +1176,26 @@ class DesignSpaceDocument(LogMixin, AsDictMixin):
return None
def findDefault(self):
# new default finder
# take the sourcedescriptor with the location at all the defaults
# if we can't find it, return None, let someone else figure it out
"""Set and return SourceDescriptor at the default location or None.
The default location is the set of all `default` values in user space
of all axes.
"""
self.default = None
# Convert the default location from user space to design space before comparing
# it against the SourceDescriptor locations (always in design space).
# Note: given no map, piecewiseLinearMap will simply return the value.
default_location_design = {
axis.name: axis.map_forward(self.defaultLoc[axis.name])
for axis in self.axes
}
for sourceDescriptor in self.sources:
if sourceDescriptor.location == self.defaultLoc:
# we choose you!
if sourceDescriptor.location == default_location_design:
self.default = sourceDescriptor
return sourceDescriptor
return None
def normalizeLocation(self, location):

58
Tests/designspaceLib/designspace_test.py
View File

@ -847,3 +847,61 @@ def test_with_with_path_object(tmpdir):
doc = DesignSpaceDocument()
doc.write(dest)
assert dest.exists()
def test_findDefault_axis_mapping():
designspace_string = """\
<?xml version='1.0' encoding='UTF-8'?>
<designspace format="4.0">
<axes>
<axis tag="wght" name="Weight" minimum="100" maximum="800" default="400">
<map input="100" output="20"/>
<map input="300" output="40"/>
<map input="400" output="80"/>
<map input="700" output="126"/>
<map input="800" output="170"/>
</axis>
<axis tag="ital" name="Italic" minimum="0" maximum="1" default="1"/>
</axes>
<sources>
<source filename="Font-Light.ufo">
<location>
<dimension name="Weight" xvalue="20"/>
<dimension name="Italic" xvalue="0"/>
</location>
</source>
<source filename="Font-Regular.ufo">
<location>
<dimension name="Weight" xvalue="80"/>
<dimension name="Italic" xvalue="0"/>
</location>
</source>
<source filename="Font-Bold.ufo">
<location>
<dimension name="Weight" xvalue="170"/>
<dimension name="Italic" xvalue="0"/>
</location>
</source>
<source filename="Font-LightItalic.ufo">
<location>
<dimension name="Weight" xvalue="20"/>
<dimension name="Italic" xvalue="1"/>
</location>
</source>
<source filename="Font-Italic.ufo">
<location>
<dimension name="Weight" xvalue="80"/>
<dimension name="Italic" xvalue="1"/>
</location>
</source>
<source filename="Font-BoldItalic.ufo">
<location>
<dimension name="Weight" xvalue="170"/>
<dimension name="Italic" xvalue="1"/>
</location>
</source>
</sources>
</designspace>
"""
designspace = DesignSpaceDocument.fromstring(designspace_string)
assert designspace.findDefault().filename == "Font-Italic.ufo"