def progress_callback(self, current_value, maximum_value, message=None):
"""GUI based callback implementation for showing progress.
:param current_value: Current progress.
:type current_value: int
:param maximum_value: Maximum range (point at which task is complete.
:type maximum_value: int
:param message: Optional message dictionary to containing content
we can display to the user. See safe.definitions.analysis_steps
for an example of the expected format
:type message: dict
"""
report = m.Message()
report.add(LOGO_ELEMENT)
report.add(m.Heading(self.tr('Analysis status'), **INFO_STYLE))
if message is not None:
report.add(m.ImportantText(message['name']))
report.add(m.Paragraph(message['description']))
report.add(self._multi_exposure_if.current_impact_function.
performance_log_message())
send_static_message(self, report)
self.progress_bar.setMaximum(maximum_value)
self.progress_bar.setValue(current_value)
QgsApplication.processEvents()
def validate_impact_function(self):
"""Check validity of the current impact function."""
# Always set it to False
self.btn_run.setEnabled(False)
for combo in list(self.combos_exposures.values()):
if combo.count() == 1:
combo.setEnabled(False)
hazard = layer_from_combo(self.cbx_hazard)
aggregation = layer_from_combo(self.cbx_aggregation)
exposures = []
for combo in list(self.combos_exposures.values()):
exposures.append(layer_from_combo(combo))
exposures = [layer for layer in exposures if layer]
multi_exposure_if = MultiExposureImpactFunction()
multi_exposure_if.hazard = hazard
multi_exposure_if.exposures = exposures
multi_exposure_if.debug = False
multi_exposure_if.callback = self.progress_callback
if aggregation:
multi_exposure_if.use_selected_features_only = (
self.use_selected_only)
multi_exposure_if.aggregation = aggregation
else:
multi_exposure_if.crs = (
self.iface.mapCanvas().mapSettings().destinationCrs())
if len(self.ordered_expected_layers()) != 0:
self._multi_exposure_if.output_layers_ordered = (
self.ordered_expected_layers())
status, message = multi_exposure_if.prepare()
if status == PREPARE_SUCCESS:
self._multi_exposure_if = multi_exposure_if
self.btn_run.setEnabled(True)
send_static_message(self, ready_message())
self.list_layers_in_map_report.clear()
return
else:
disable_busy_cursor()
send_error_message(self, message)
self._multi_exposure_if = None