def validate_edited_aoi(self):
json_txt = self.leAOI.text()
if not json_txt:
self.reset_aoi_box()
log.debug('No AOI defined, skipping validation')
return
try:
json_obj = json.loads(json_txt)
except ValueError:
# noinspection PyUnresolvedReferences
self._show_message('AOI GeoJSON is invalid',
level=Qgis.Warning,
duration=10)
return
json_geom = geometry_from_json(json_obj)
if not json_geom:
# noinspection PyUnresolvedReferences
self._show_message('AOI GeoJSON geometry invalid',
level=Qgis.Warning,
duration=10)
return
geom: QgsGeometry = qgsgeometry_from_geojson(json_geom)
self._aoi_box.setToGeometry(geom,
QgsCoordinateReferenceSystem("EPSG:4326"))
self.leAOI.blockSignals(True)
self.leAOI.setText(json.dumps(json_geom))
self.leAOI.blockSignals(False)
self.zoom_to_aoi()
def test_geometry_from_json():
# base case, no geometry
assert None is utils.geometry_from_json({})
# from an empty feature collection
collection = {'type': 'FeatureCollection', 'features': []}
assert None is utils.geometry_from_json(collection)
# simple geometry, we're guessing by the type property w/ no further checks
geom = {'type': 'Polygon'}
assert geom == utils.geometry_from_json(geom)
# from a feature
feature = {'type': 'Feature', 'geometry': geom}
assert geom == utils.geometry_from_json(feature)
# from a feature collection
collection = {'type': 'FeatureCollection', 'features': [feature]}
assert geom == utils.geometry_from_json(collection)
def test_geometry_from_json():
# base case, no geometry
assert None is utils.geometry_from_json({})
# from an empty feature collection
collection = {'type': 'FeatureCollection', 'features': []}
assert None is utils.geometry_from_json(collection)
# simple geometry, we're guessing by the type property and presence of
# the coordinates property
geom = {'type': 'Polygon', 'coordinates': [1, 2]}
assert geom == utils.geometry_from_json(geom)
# from a feature
feature = {'type': 'Feature', 'geometry': geom}
assert geom == utils.geometry_from_json(feature)
# from a feature collection
collection = {'type': 'FeatureCollection', 'features': [feature]}
assert geom == utils.geometry_from_json(collection)
def test_geometry_from_json():
# base case, no geometry
assert None is utils.geometry_from_json({})
# from an empty feature collection
collection = {'type': 'FeatureCollection', 'features': []}
assert None is utils.geometry_from_json(collection)
# simple geometry, we're guessing by the type property and presence of
# the coordinates property
geom = {'type': 'Polygon', 'coordinates': [1, 2]}
assert geom == utils.geometry_from_json(geom)
# from a feature
feature = {'type': 'Feature', 'geometry': geom}
assert geom == utils.geometry_from_json(feature)
# from a feature collection
collection = {'type': 'FeatureCollection', 'features': [feature]}
assert geom == utils.geometry_from_json(collection)
def convert(self, val, param, ctx):
val = read(val)
if not val:
return []
try:
geoj = json.loads(val)
except ValueError:
raise click.BadParameter('invalid GeoJSON')
geom = geometry_from_json(geoj)
if geom is None:
raise click.BadParameter('unable to find geometry in input')
return [filters.geom_filter(geom)]
def convert(self, val, param, ctx):
val = read(val)
if not val:
return []
try:
geoj = json.loads(val)
except ValueError:
raise click.BadParameter('invalid GeoJSON')
geom = geometry_from_json(geoj)
if geom is None:
raise click.BadParameter('unable to find geometry in input')
return [filters.geom_filter(geom)]
def geometry_from_json_str_or_obj(
json_type: Union[str, dict]) -> Optional[dict]:
"""
:param json_type: GeoJSON feature, feature collection or geometry as
string or `json` object
:type json_type: str | dict
:rtype: dict | None
"""
json_obj = json_str_or_obj_to_obj(json_type)
# Strip outer Feature or FeatureCollection
json_geom = geometry_from_json(json_obj)
if not json_geom:
log.debug('GeoJSON geometry invalid')
return json_geom
def load_aoi_from_file(self):
path, _ = QFileDialog.getOpenFileName(self, "Open GeoJSON AOI file",
QDir.homePath(),
"JSON (*.json);;All Files (*)")
file = QFile(path)
if not file.open(QFile.ReadOnly | QFile.Text):
return
inf = QTextStream(file)
json_txt = inf.readAll()
try:
json_obj = json.loads(json_txt)
except ValueError:
# noinspection PyUnresolvedReferences
self._show_message('GeoJSON from file invalid',
level=Qgis.Warning,
duration=10)
return
json_geom = geometry_from_json(json_obj)
if not json_geom:
# noinspection PyUnresolvedReferences
self._show_message('GeoJSON geometry from file invalid',
level=Qgis.Warning,
duration=10)
return
geom: QgsGeometry = qgsgeometry_from_geojson(json_geom)
self._aoi_box.setToGeometry(geom,
QgsCoordinateReferenceSystem("EPSG:4326"))
self.leAOI.setText(json.dumps(json_geom))
self.zoom_to_aoi()
