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import pytest
from fontTools.varLib.models import VariationModel
from fontTools.varLib.varStore import OnlineVarStoreBuilder, VarStoreInstancer
from fontTools.ttLib import TTFont, newTable
from fontTools.ttLib.tables._f_v_a_r import Axis
from fontTools.ttLib.tables.otBase import OTTableReader, OTTableWriter
from fontTools.ttLib.tables.otTables import VarStore
@pytest.mark.parametrize(
"locations, masterValues",
[
(
[{}, {"a": 1}],
[
[10, 20],
[100, 2000],
[100, 22000],
],
),
(
[{}, {"a": 1}, {"b": 1}, {"a": 1, "b": 1}],
[
[10, 20, 40, 60],
[100, 2000, 400, 6000],
[7100, 22000, 4000, 30000],
],
),
(
[{}, {"a": 1}],
[
[10, 20],
[42000, 100],
[100, 52000],
],
),
(
[{}, {"a": 1}, {"b": 1}, {"a": 1, "b": 1}],
[
[10, 20, 40, 60],
[40000, 42000, 400, 6000],
[100, 22000, 4000, 173000],
],
),
],
)
def test_onlineVarStoreBuilder(locations, masterValues):
axisTags = sorted({k for loc in locations for k in loc})
model = VariationModel(locations)
builder = OnlineVarStoreBuilder(axisTags)
builder.setModel(model)
varIdxs = []
for masters in masterValues:
_, varIdx = builder.storeMasters(masters)
varIdxs.append(varIdx)
varStore = builder.finish()
mapping = varStore.optimize()
varIdxs = [mapping[varIdx] for varIdx in varIdxs]
dummyFont = TTFont()
writer = OTTableWriter()
varStore.compile(writer, dummyFont)
data = writer.getAllData()
reader = OTTableReader(data)
varStore = VarStore()
varStore.decompile(reader, dummyFont)
fvarAxes = [buildAxis(axisTag) for axisTag in axisTags]
instancer = VarStoreInstancer(varStore, fvarAxes)
for masters, varIdx in zip(masterValues, varIdxs):
base, *rest = masters
for expectedValue, loc in zip(masters, locations):
instancer.setLocation(loc)
value = base + instancer[varIdx]
assert expectedValue == value
def buildAxis(axisTag):
axis = Axis()
axis.axisTag = axisTag
return axis
|
