def test_best_srs_no_preferred(self, preferred):
supported = SupportedSRS([SRS(4326), SRS(25832)], None)
assert supported.best_srs(SRS(4326)) == SRS(4326)
assert supported.best_srs(SRS(4258)) == SRS(4326)
assert supported.best_srs(SRS(25832)) == SRS(25832)
assert supported.best_srs(SRS(25831)) == SRS(25832)
assert supported.best_srs(SRS(3857)) == SRS(25832)
def test_best_srs(self, preferred):
supported = SupportedSRS([SRS(4326), SRS(25832)], preferred)
assert supported.best_srs(SRS(4326)) == SRS(4326)
assert supported.best_srs(SRS(4258)) == SRS(4326)
assert supported.best_srs(SRS(25832)) == SRS(25832)
assert supported.best_srs(SRS(25831)) == SRS(25832)
assert supported.best_srs(SRS(3857)) == SRS(25832)
supported = SupportedSRS(
[SRS(4326), SRS(31467), SRS(25831)], preferred)
assert supported.best_srs(SRS(3857)) == SRS(25831)
assert supported.best_srs(SRS(25831)) == SRS(25831)
class SRSConditional(MapLayer):
supports_meta_tiles = True
def __init__(self, layers, extent, opacity=None, preferred_srs=None):
MapLayer.__init__(self)
self.srs_map = {}
self.res_range = merge_layer_res_ranges([l[0] for l in layers])
supported_srs = []
for layer, srs in layers:
supported_srs.append(srs)
self.srs_map[srs] = layer
self.supported_srs = SupportedSRS(supported_srs, preferred_srs)
self.extent = extent
self.opacity = opacity
def get_map(self, query):
self.check_res_range(query)
layer = self._select_layer(query.srs)
return layer.get_map(query)
def _select_layer(self, query_srs):
srs = self.supported_srs.best_srs(query_srs)
return self.srs_map[srs]