def add_default_basemap() -> None:
url = 'type=xyz&zmin=0&zmax=20&url=http://a.tile.stamen.com/terrain-background/{z}/{x}/{y}.png'
attribution = 'Map tiles by Stamen Design, under CC BY 3.0. Data by OpenStreetMap, under ODbL'
attribution_url = 'http://maps.stamen.com'
registry = QgsProject.instance() # type: QgsProject
root = registry.layerTreeRoot() # type: QgsLayerTree
tree_layers = filter(QgsLayerTree.isLayer, root.children())
if any(tree_layer.layer().source() == url for tree_layer in tree_layers):
return
layer = QgsRasterLayer(url, 'Stamen Terrain Background', 'wms')
layer.setAttribution(attribution)
layer.setAttributionUrl(attribution_url)
registry.addMapLayer(layer, False)
root.addLayer(layer)
# Reset the Project CRS to WGS84 otherwise it will be set to the stamen layer CRS
def setWGS84():
registry.setCrs((QgsCoordinateReferenceSystem.fromProj4("+proj=longlat +datum=WGS84 +no_defs")))
setWGS84()
# Again with a delay, which is a work-around as sometimes QGIS does not apply the CRS change above.
Timer(0.5, setWGS84).start()
def add_layer_to_map(ds):
layers4add = []
if ds.type.lower() == KNOWN_DRIVERS.TMS.lower():
if PluginSettings.use_native_tms(): # add version check
service_url = ds.tms_url.replace("=", "%3D").replace("&", "%26")
if ds.tms_y_origin_top is not None and ds.tms_y_origin_top == False:
service_url = service_url.replace('{y}', '{-y}')
qgis_tms_uri = 'type=xyz&zmin={0}&zmax={1}&url={2}'.format(
ds.tms_zmin or TileDefaultSettings.ZMIN, ds.tms_zmax
or TileDefaultSettings.ZMAX, service_url)
#print ">>> qgis_tms_uri: ", qgis_tms_uri
layer = QgsRasterLayer(qgis_tms_uri, tr(ds.alias),
KNOWN_DRIVERS.WMS.lower())
ProjectionHelper.set_tile_layer_proj(layer, ds.tms_epsg_crs_id,
ds.tms_postgis_crs_id,
ds.tms_custom_proj)
layers4add.append(layer)
else:
service_info = TileServiceInfo(tr(ds.alias), ds.copyright_text,
ds.tms_url)
service_info.zmin = ds.tms_zmin or service_info.zmin
service_info.zmax = ds.tms_zmax or service_info.zmax
if ds.tms_y_origin_top is not None:
service_info.yOriginTop = ds.tms_y_origin_top
service_info.epsg_crs_id = ds.tms_epsg_crs_id
service_info.postgis_crs_id = ds.tms_postgis_crs_id
service_info.custom_proj = ds.tms_custom_proj
if ds.tms_tile_ranges is not None: # needs try block & checks that keys are integers etc..
service_info.tile_ranges = ast.literal_eval(ds.tms_tile_ranges)
if ds.tms_tsize1 is not None:
service_info.tsize1 = ds.tms_tsize1
if ds.tms_origin_x is not None:
service_info.originX = ds.tms_origin_x
if ds.tms_origin_y is not None:
service_info.originY = ds.tms_origin_y
layer = TileLayer(service_info, False)
layers4add.append(layer)
if ds.type.lower() == KNOWN_DRIVERS.GDAL.lower():
layer = QgsRasterLayer(ds.gdal_source_file, tr(ds.alias))
layers4add.append(layer)
if ds.type.lower() == KNOWN_DRIVERS.WMS.lower():
qgis_wms_uri = u''
if ds.wms_params:
qgis_wms_uri += ds.wms_params
if ds.wms_layers:
layers = ds.wms_layers.split(',')
if layers:
if ds.wms_turn_over:
layers.reverse()
qgis_wms_uri += '&layers=' + '&layers='.join(
layers) + '&styles=' * len(layers)
qgis_wms_uri += '&url=' + ds.wms_url + "?" + ds.wms_url_params.replace(
"=", "%3D").replace("&", "%26")
# print ">>> qgis_wms_uri: ", qgis_wms_uri
layer = QgsRasterLayer(qgis_wms_uri, tr(ds.alias),
KNOWN_DRIVERS.WMS.lower())
layers4add.append(layer)
if ds.type.lower() == KNOWN_DRIVERS.WFS.lower():
qgis_wfs_uri_base = ds.wfs_url
if ds.wfs_params is not None:
qgis_wfs_uri_base += ds.wfs_params
o = urlparse.urlparse(qgis_wfs_uri_base)
request_attrs = dict(urlparse.parse_qsl(o.query))
new_request_attrs = {}
for k, v in request_attrs.items():
new_request_attrs[k.upper()] = v
if ds.wfs_epsg is not None:
new_request_attrs['SRSNAME'] = "EPSG:{0}".format(ds.wfs_epsg)
layers = []
if len(ds.wfs_layers) > 0:
layers.extend(ds.wfs_layers)
else:
layers_str = request_attrs.get('TYPENAME', '')
layers.extend(layers_str.split())
for layer_name in layers:
new_request_attrs['TYPENAME'] = layer_name
url_parts = list(o)
url_parts[4] = "&".join(
["%s=%s" % (k, v) for k, v in new_request_attrs.items()])
qgis_wfs_uri = urlparse.urlunparse(url_parts)
layer = QgsVectorLayer(qgis_wfs_uri,
"%s - %s" % (tr(ds.alias), layer_name),
"WFS")
layers4add.append(layer)
if ds.type.lower() == KNOWN_DRIVERS.GEOJSON.lower():
layer = QgsVectorLayer(ds.geojson_url, tr(ds.alias), "ogr")
layers4add.append(layer)
for layer in layers4add:
if not layer.isValid():
error_message = tr(
'Layer %s can\'t be added to the map!') % ds.alias
iface.messageBar().pushMessage(tr('Error'),
error_message,
level=QgsMessageBar.CRITICAL)
QgsMessageLog.logMessage(error_message,
level=QgsMessageLog.CRITICAL)
else:
# Set attribs
layer.setAttribution(ds.copyright_text)
layer.setAttributionUrl(ds.copyright_link)
# Insert layer
toc_root = QgsProject.instance().layerTreeRoot()
selected_node = iface.layerTreeView().currentNode()
if selected_node.nodeType() == selected_node.NodeGroup:
toc_root = selected_node
if ds.type.lower() in (KNOWN_DRIVERS.WMS.lower(),
KNOWN_DRIVERS.TMS.lower()):
position = len(
toc_root.children()) # Insert to bottom if wms\tms
else:
position = 0 # insert to top
QgsMapLayerRegistry.instance().addMapLayer(layer, False)
toc_root.insertLayer(position, layer)
# Save link
service_layers.append(layer)
# Set OTF CRS Transform for map
if PluginSettings.enable_otf_3857(
) and ds.type == KNOWN_DRIVERS.TMS:
iface.mapCanvas().setCrsTransformEnabled(True)
iface.mapCanvas().setDestinationCrs(TileLayer.CRS_3857)
def add_layer_to_map(ds):
layers4add = []
if ds.type.lower() == KNOWN_DRIVERS.TMS.lower():
if ds.alt_tms_urls:
tms_url = ds.alt_tms_urls[random.randint(0, len(ds.alt_tms_urls)-1)]
else:
tms_url = ds.tms_url
if PluginSettings.use_native_tms(): # add version check
service_url = tms_url.replace("=", "%3D").replace("&", "%26")
if ds.tms_y_origin_top is not None and ds.tms_y_origin_top==False:
service_url = service_url.replace('{y}', '{-y}')
qgis_tms_uri = 'type=xyz&zmin={0}&zmax={1}&url={2}'.format(
ds.tms_zmin or TileDefaultSettings.ZMIN,
ds.tms_zmax or TileDefaultSettings.ZMAX,
service_url
)
layer = QgsRasterLayer(qgis_tms_uri, tr(ds.alias), KNOWN_DRIVERS.WMS.lower())
ProjectionHelper.set_tile_layer_proj(layer, ds.tms_epsg_crs_id, ds.tms_postgis_crs_id, ds.tms_custom_proj)
layers4add.append(layer)
else:
service_info = TileServiceInfo(tr(ds.alias), ds.copyright_text, tms_url)
service_info.zmin = ds.tms_zmin or service_info.zmin
service_info.zmax = ds.tms_zmax or service_info.zmax
if ds.tms_y_origin_top is not None:
service_info.yOriginTop = ds.tms_y_origin_top
service_info.epsg_crs_id = ds.tms_epsg_crs_id
service_info.postgis_crs_id = ds.tms_postgis_crs_id
service_info.custom_proj = ds.tms_custom_proj
if ds.tms_tile_ranges is not None: # needs try block & checks that keys are integers etc..
service_info.tile_ranges = ast.literal_eval(ds.tms_tile_ranges)
if ds.tms_tsize1 is not None:
service_info.tsize1 = ds.tms_tsize1
if ds.tms_origin_x is not None:
service_info.originX = ds.tms_origin_x
if ds.tms_origin_y is not None:
service_info.originY = ds.tms_origin_y
layer = TileLayer(service_info, False)
layers4add.append(layer)
if ds.type.lower() == KNOWN_DRIVERS.GDAL.lower():
layer = QgsRasterLayer(ds.gdal_source_file, tr(ds.alias))
layers4add.append(layer)
if ds.type.lower() == KNOWN_DRIVERS.WMS.lower():
qgis_wms_uri = u''
if ds.wms_params:
qgis_wms_uri += ds.wms_params
if ds.wms_layers:
layers = ds.wms_layers.split(',')
if layers:
if ds.wms_turn_over:
layers.reverse()
qgis_wms_uri += '&layers=' + '&layers='.join(layers) + '&styles=' * len(layers)
qgis_wms_uri += '&url=' + ds.wms_url + "?" + ds.wms_url_params.replace("=","%3D").replace("&","%26")
layer = QgsRasterLayer(qgis_wms_uri, tr(ds.alias), KNOWN_DRIVERS.WMS.lower())
layers4add.append(layer)
if ds.type.lower() == KNOWN_DRIVERS.WFS.lower():
qgis_wfs_uri_base = ds.wfs_url
if ds.wfs_params is not None:
qgis_wfs_uri_base += ds.wfs_params
o = urlparse.urlparse(qgis_wfs_uri_base)
request_attrs = dict(urlparse.parse_qsl(o.query))
new_request_attrs = {}
for k, v in request_attrs.items():
new_request_attrs[k.upper()] = v
if ds.wfs_epsg is not None:
new_request_attrs['SRSNAME'] = "EPSG:{0}".format(ds.wfs_epsg)
layers = []
if len(ds.wfs_layers) > 0:
layers.extend(ds.wfs_layers)
else:
layers_str = request_attrs.get('TYPENAME', '')
layers.extend(layers_str.split())
for layer_name in layers:
new_request_attrs['TYPENAME'] = layer_name
url_parts = list(o)
url_parts[4] = "&".join(
["%s=%s" % (k, v) for k, v in new_request_attrs.items()]
)
qgis_wfs_uri = urlparse.urlunparse(url_parts)
layer = QgsVectorLayer(
qgis_wfs_uri,
"%s - %s" % (tr(ds.alias), layer_name),
"WFS")
layers4add.append(layer)
if ds.type.lower() == KNOWN_DRIVERS.GEOJSON.lower():
layer = QgsVectorLayer(
ds.geojson_url,
tr(ds.alias),
"ogr")
layers4add.append(layer)
for layer in layers4add:
if not layer.isValid():
error_message = tr('Layer %s can\'t be added to the map!') % ds.alias
iface.messageBar().pushMessage(tr('Error'),
error_message,
level=QGisMessageBarLevel.Critical)
QgsMessageLog.logMessage(error_message, level=QGisMessageLogLevel.Critical)
else:
# Set attribs
layer.setAttribution(ds.copyright_text)
layer.setAttributionUrl(ds.copyright_link)
# Insert layer
toc_root = QgsProject.instance().layerTreeRoot()
selected_node = iface.layerTreeView().currentNode()
if selected_node.nodeType() == selected_node.NodeGroup:
toc_root = selected_node
if ds.type.lower() in (KNOWN_DRIVERS.WMS.lower(), KNOWN_DRIVERS.TMS.lower()):
position = len(toc_root.children()) # Insert to bottom if wms\tms
else:
position = 0 # insert to top
addMapLayer(layer, False)
toc_root.insertLayer(position, layer)
# Save link
service_layers.append(layer)
# Set OTF CRS Transform for map
if PluginSettings.enable_otf_3857() and ds.type == KNOWN_DRIVERS.TMS:
if hasattr(iface.mapCanvas(), "setCrsTransformEnabled"):
# Need for QGIS2. In QGIS3 CRS transformation is always enabled
iface.mapCanvas().setCrsTransformEnabled(True)
iface.mapCanvas().setDestinationCrs(TileLayer.CRS_3857)
