def buffer_layer(self,
layer_name,
distance,
segments=1,
cap_style=1,
join_style=1,
mitre_limit=1.0,
result_layer_name=None):
layer = self.has_layer(layer_name, True)
if layer is None:
raise LayerNotFoundException("Layer not found")
buffer_result = Computing.buffer(layer, distance, segments, cap_style,
join_style, mitre_limit)
if result_layer_name is None:
layer.data = buffer_result
self.update_vector_layer(layer_name, layer.data)
else:
if self.has_layer(result_layer_name):
self.window.page().runJavaScript(
GEOJSON_LAYER_ADD_DATA_SCRIPT %
(result_layer_name, str(buffer_result)))
else:
self.add_vector_layer(result_layer_name,
"",
data=buffer_result)
def remove_layer(self, layer_name):
layer = self.has_layer(layer_name, True)
if layer is None:
raise LayerNotFoundException("Layer not found")
self.layers.remove(layer)
self.window.page().runJavaScript(REMOVE_LAYER_SCRIPT %
(layer_name, layer_name))
def update_vector_layer(self, layer_name, data):
if not self.has_layer(layer_name):
raise LayerNotFoundException("Layer not found")
self.window.page().runJavaScript(REMOVE_LAYER_SCRIPT %
(layer_name, layer_name))
self.window.page().runJavaScript(GEOJSON_LAYER_CREATION_SCRIPT %
(layer_name, layer_name))
self.window.page().runJavaScript(GEOJSON_LAYER_ADD_DATA_SCRIPT %
(layer_name, str(data)))
def set_visible(self, layer_name, is_visible):
layer = self.has_layer(layer_name, True)
if layer is None:
raise LayerNotFoundException("Layer not found")
layer.is_visible = is_visible
if layer.is_visible:
self.window.page().runJavaScript(SHOW_LAYER_SCRIPT %
(layer_name, layer_name))
else:
self.window.page().runJavaScript(HIDE_LAYER_SCRIPT %
(layer_name, layer_name))
def intersect_layers(self, first_layer_name, second_layer_name,
result_layer_name):
first_layer = self.has_layer(first_layer_name, True)
second_layer = self.has_layer(second_layer_name, True)
if first_layer is None or second_layer is None:
raise LayerNotFoundException("Layer not found")
intersection_result = Computing.intersection(first_layer, second_layer)
if self.has_layer(result_layer_name):
self.window.page().runJavaScript(
GEOJSON_LAYER_ADD_DATA_SCRIPT %
(result_layer_name, str(intersection_result)))
else:
self.add_vector_layer(result_layer_name,
"",
data=intersection_result)
def bring_to_front(self, layer_name):
layer = self.has_layer(layer_name, True)
if layer is None:
raise LayerNotFoundException("Layer not found")
self.window.page().runJavaScript(BRING_TO_FRONT_SCRIPT % layer_name)