def read(cls, reader: UFOReader, lazy: bool = True) -> LayerSet:
"""Instantiates a LayerSet object from a :class:`fontTools.ufoLib.UFOReader`.
Args:
path: The path to the UFO to load.
lazy: If True, load glyphs, data files and images as they are accessed. If
False, load everything up front.
"""
layers: dict[str, Layer] = {}
defaultLayer = None
defaultLayerName = reader.getDefaultLayerName()
for layerName in reader.getLayerNames():
isDefault = layerName == defaultLayerName
if isDefault or not lazy:
layer = cls._loadLayer(reader, layerName, lazy, isDefault)
if isDefault:
defaultLayer = layer
layers[layerName] = layer
else:
layers[layerName] = _LAYER_NOT_LOADED
assert defaultLayer is not None
self = cls(layers=layers, defaultLayer=defaultLayer)
if lazy:
self._reader = reader
return self
def reloadLayers(self, layerData):
"""
Reload the layers. This should not be called externally.
"""
reader = UFOReader(self.font.path, validate=self.font.ufoLibReadValidate)
# handle the layers
currentLayerOrder = self.layerOrder
for layerName, l in layerData.get("layers", {}).items():
# new layer
if layerName not in currentLayerOrder:
glyphSet = reader.getGlyphSet(layerName, validateRead=self.ufoLibReadValidate, validateWrite=self.font.ufoLibWriteValidate)
self.newLayer(layerName, glyphSet)
# get the layer
layer = self[layerName]
# reload the layer info
if l.get("info"):
layer.color = None
layer.lib.clear()
layer._glyphSet.readLayerInfo(layer)
self._stampLayerInfoDataState(layer)
# reload the glyphs
glyphNames = l.get("glyphNames", [])
if glyphNames:
layer.reloadGlyphs(glyphNames)
# handle the order
if layerData.get("order", False):
newLayerOrder = reader.getLayerNames()
for layerName in self.layerOrder:
if layerName not in newLayerOrder:
newLayerOrder.append(layerName)
self.layerOrder = newLayerOrder
# handle the default layer
if layerData.get("default", False):
newDefaultLayerName = reader.getDefaultLayerName()
self.defaultLayer = self[newDefaultLayerName]
def reloadLayers(self, layerData):
"""
Reload the layers. This should not be called externally.
"""
reader = UFOReader(self.font.path,
validate=self.font.ufoLibReadValidate)
# handle the layers
currentLayerOrder = self.layerOrder
for layerName, l in layerData.get("layers", {}).items():
# new layer
if layerName not in currentLayerOrder:
glyphSet = reader.getGlyphSet(
layerName,
validateRead=self.ufoLibReadValidate,
validateWrite=self.font.ufoLibWriteValidate)
self.newLayer(layerName, glyphSet)
# get the layer
layer = self[layerName]
# reload the layer info
if l.get("info"):
layer.color = None
layer.lib.clear()
layer._glyphSet.readLayerInfo(layer)
self._stampLayerInfoDataState(layer)
# reload the glyphs
glyphNames = l.get("glyphNames", [])
if glyphNames:
layer.reloadGlyphs(glyphNames)
# handle the order
if layerData.get("order", False):
newLayerOrder = reader.getLayerNames()
for layerName in self.layerOrder:
if layerName not in newLayerOrder:
newLayerOrder.append(layerName)
self.layerOrder = newLayerOrder
# handle the default layer
if layerData.get("default", False):
newDefaultLayerName = reader.getDefaultLayerName()
self.defaultLayer = self[newDefaultLayerName]
