def set_selected_vertex(self, feature_id: Optional[int],
vertex_number: Optional[int]):
"""
Triggered when the selected vertex is changed
"""
if self.current_vertex_number == vertex_number and self.current_feature_id == feature_id:
return
needs_redraw = SettingsRegistry.label_filtering() == SettingsRegistry.LABEL_SELECTED or \
(
SettingsRegistry.label_filtering() == SettingsRegistry.LABEL_ALL and feature_id != self.current_feature_id)
self.current_feature_id = feature_id
self.current_vertex_number = vertex_number
self._remove_current_generator()
self._reset_generator(not needs_redraw)
def restore_settings(self):
"""
Restores saved settings
"""
current_label_filter = SettingsRegistry.label_filtering()
self.filtering_combo.setCurrentIndex(self.filtering_combo.findData(current_label_filter))
self.check_center_on_selection.setChecked(SettingsRegistry.center_on_selected())
self.check_flash_feature.setChecked(SettingsRegistry.flash_feature())
self.check_flash_vertex.setChecked(SettingsRegistry.flash_vertex())
self.point_symbol_button.setSymbol(SettingsRegistry.vertex_symbol())
self.vertex_font_button.setTextFormat(SettingsRegistry.vertex_format())
self.number_format = SettingsRegistry.number_format()
def createRenderer(self) -> QgsSingleSymbolRenderer: # pylint: disable=missing-function-docstring
filtering = SettingsRegistry.label_filtering()
topological = self.topological and self.layer.selectedFeatureCount(
) == 2
if filtering == SettingsRegistry.LABEL_NONE:
return QgsNullSymbolRenderer()
if filtering == SettingsRegistry.LABEL_SELECTED:
if self.feature_id is None or self.vertex_number is None:
# labeling selected vertex only, and no selection => no renderer
return QgsNullSymbolRenderer()
selection = {self.feature_id}
vertex_number = self.vertex_number
else:
selection = self.layer.selectedFeatureIds()
vertex_number = None
if topological:
request = QgsFeatureRequest().setFilterFids(
self.layer.selectedFeatureIds()).setNoAttributes()
topological_geometries = {
f.id(): f.geometry()
for f in self.layer.getFeatures(request)
}
else:
topological_geometries = None
layer_source = QgsVectorLayerFeatureSource(self.layer)
return VertexHighlighterRenderer(
source=layer_source,
layer_type=self.layer_type,
selection=selection,
vertex_number=vertex_number,
topological_geometries=topological_geometries,
)