def makeAnchor(anchor, ff):
"""Creates an OpenType anchor object from. If the anchor position contains
a variable scalar, these variable scalars are saved in the ``GDEF`` variation
store.
Args:
anchor: a tuple of x,y position. These elements may be numbers or
:py:class:`VariableScalar` objects.
Returns: an ``otTables.Anchor`` object.
"""
x, y = anchor
if isinstance(x, VariableScalar):
x_def, x_index = x.add_to_variation_store(ff.varstorebuilder)
else:
x_def, x_index = int(x), None
if isinstance(y, VariableScalar):
y_def, y_index = y.add_to_variation_store(ff.varstorebuilder)
else:
y_def, y_index = int(y), None
anchor = otl.buildAnchor(x_def, y_def)
if x_index is not None and x_index != 0xFFFFFFFF:
anchor.XDeviceTable = buildVarDevTable(x_index)
anchor.Format = 3
if y_index is not None and x_index != 0xFFFFFFFF:
anchor.YDeviceTable = buildVarDevTable(y_index)
anchor.Format = 3
return anchor
def toOTValueRecord(self, ff, pairPosContext=False):
"""Converts the ValueRecord to an ``OTLValueRecord`` object. If the
value record contains any variable scalars, they are saved to the
GDEF variation store."""
otl_value = OTLValueRecord()
if pairPosContext and not self:
self.XAdvance = 0
for item in ["xPlacement", "yPlacement", "xAdvance", "yAdvance"]:
itemvalue = getattr(self, item)
if not itemvalue:
continue
item = item[0].upper() + item[1:]
if isinstance(itemvalue, VariableScalar):
itemvalue, index = itemvalue.add_to_variation_store(ff.varstorebuilder)
if index != 0xFFFF:
setattr(otl_value, item[0:4]+"Device", buildVarDevTable(index))
setattr(otl_value, item, itemvalue)
return otl_value
def buildVarDevTable(store_builder, master_values):
if allEqual(master_values):
return master_values[0], None
base, varIdx = store_builder.storeMasters(master_values)
return base, builder.buildVarDevTable(varIdx)
def buildVarDevTable(store_builder, master_values):
if _all_equal(master_values):
return None
varIdx = store_builder.storeMasters(master_values)
return builder.buildVarDevTable(varIdx)
def buildVarDevTable(store_builder, master_values): if _all_equal(master_values): return None varIdx = store_builder.storeMasters(master_values) return builder.buildVarDevTable(varIdx)
def buildVarDevTable(store_builder, master_values): if _all_equal(master_values): return master_values[0], None base, varIdx = store_builder.storeMasters(master_values) return base, builder.buildVarDevTable(varIdx)
