def useLayerExtent(self): CANVAS_KEY = 'Use canvas extent' extentsDict = {} extentsDict[CANVAS_KEY] = { "extent": iface.mapCanvas().extent(), "authid": iface.mapCanvas().mapSettings().destinationCrs().authid() } extents = [CANVAS_KEY] layers = QgsProcessingUtils.compatibleLayers(QgsProject.instance()) for layer in layers: authid = layer.crs().authid() if ProcessingConfig.getSetting(ProcessingConfig.SHOW_CRS_DEF) \ and authid is not None: layerName = u'{} [{}]'.format(layer.name(), authid) else: layerName = layer.name() extents.append(layerName) extentsDict[layerName] = { "extent": layer.extent(), "authid": authid } (item, ok) = QInputDialog.getItem(self, self.tr('Select extent'), self.tr('Use extent from'), extents, False) if ok: self.setValueFromRect(extentsDict[item]["extent"]) if extentsDict[item]["authid"] != iface.mapCanvas().mapSettings( ).destinationCrs().authid(): iface.messageBar().pushMessage( self.tr("Warning"), self. tr("The projection of the chosen layer is not the same as canvas projection! The selected extent might not be what was intended." ), QgsMessageBar.WARNING, 8)
def checkExtentCRS(self): unmatchingCRS = False hasExtent = False context = dataobjects.createContext() projectCRS = iface.mapCanvas().mapSettings().destinationCrs() layers = QgsProcessingUtils.compatibleLayers(QgsProject.instance()) for param in self.algorithm().parameterDefinitions(): if isinstance(param, (ParameterRaster, ParameterVector, ParameterMultipleInput)): if param.value: if isinstance(param, ParameterMultipleInput): inputlayers = param.value.split(';') else: inputlayers = [param.value] for inputlayer in inputlayers: for layer in layers: if layer.source() == inputlayer: if layer.crs() != projectCRS: unmatchingCRS = True p = QgsProcessingUtils.mapLayerFromString(inputlayer, context) if p is not None: if p.crs() != projectCRS: unmatchingCRS = True if isinstance(param, ParameterExtent): if param.skip_crs_check: continue value = self.mainWidget().wrappers[param.name()].widget.leText.text().strip() if value: hasExtent = True return hasExtent and unmatchingCRS
def useLayerExtent(self): CANVAS_KEY = 'Use canvas extent' extentsDict = {} extentsDict[CANVAS_KEY] = { "extent": iface.mapCanvas().extent(), "authid": iface.mapCanvas().mapSettings().destinationCrs().authid() } extents = [CANVAS_KEY] layers = QgsProcessingUtils.compatibleLayers(QgsProject.instance()) for layer in layers: authid = layer.crs().authid() if ProcessingConfig.getSetting(ProcessingConfig.SHOW_CRS_DEF) \ and authid is not None: layerName = u'{} [{}]'.format(layer.name(), authid) else: layerName = layer.name() extents.append(layerName) extentsDict[layerName] = { "extent": layer.extent(), "authid": authid } (item, ok) = QInputDialog.getItem(self, self.tr('Select Extent'), self.tr('Use extent from'), extents, False) if ok: self.setValueFromRect( QgsReferencedRectangle( extentsDict[item]["extent"], QgsCoordinateReferenceSystem(extentsDict[item]["authid"])))
def setOutputCRS(self): context = dataobjects.createContext() layers = QgsProcessingUtils.compatibleLayers(QgsProject.instance()) for param in self.parameterDefinitions(): if isinstance(param, (ParameterRaster, ParameterVector, ParameterMultipleInput)): if param.value: if isinstance(param, ParameterMultipleInput): inputlayers = param.value.split(';') else: inputlayers = [param.value] for inputlayer in inputlayers: for layer in layers: if layer.source() == inputlayer: self.crs = layer.crs() return p = QgsProcessingUtils.mapLayerFromString(inputlayer, context) if p is not None: self.crs = p.crs() p = None return try: from qgis.utils import iface if iface is not None: self.crs = iface.mapCanvas().mapSettings().destinationCrs() except: pass
def showLayerSelectionDialog(self): layers = [] if isinstance(self.parameterDefinition, QgsProcessingParameterRasterLayer): layers = QgsProcessingUtils.compatibleRasterLayers( QgsProject.instance()) elif isinstance( self.parameterDefinition, QgsProcessingParameterMultipleLayers ) and self.parameterDefinition.layerType() == QgsProcessing.TypeRaster: layers = QgsProcessingUtils.compatibleRasterLayers( QgsProject.instance()) elif isinstance(self.parameterDefinition, QgsProcessingParameterVectorLayer): layers = QgsProcessingUtils.compatibleVectorLayers( QgsProject.instance()) elif isinstance(self.parameterDefinition, QgsProcessingParameterMapLayer): layers = QgsProcessingUtils.compatibleLayers(QgsProject.instance()) elif isinstance(self.parameterDefinition, QgsProcessingParameterMeshLayer): layers = QgsProcessingUtils.compatibleMeshLayers( QgsProject.instance()) elif isinstance( self.parameterDefinition, QgsProcessingParameterMultipleLayers ) and self.parameterDefinition.layerType() == QgsProcessing.TypeMesh: layers = QgsProcessingUtils.compatibleMeshLayers( QgsProject.instance()) else: datatypes = [QgsProcessing.TypeVectorAnyGeometry] if isinstance(self.parameterDefinition, QgsProcessingParameterFeatureSource): datatypes = self.parameterDefinition.dataTypes() elif isinstance(self.parameterDefinition, QgsProcessingParameterMultipleLayers): datatypes = [self.parameterDefinition.layerType()] if QgsProcessing.TypeVectorAnyGeometry not in datatypes: layers = QgsProcessingUtils.compatibleVectorLayers( QgsProject.instance(), datatypes) else: layers = QgsProcessingUtils.compatibleVectorLayers( QgsProject.instance()) dlg = MultipleInputDialog([layer.name() for layer in layers]) dlg.exec_() if not dlg.selectedoptions: return selected = dlg.selectedoptions context = dataobjects.createContext() first_row = self.panel.batchRowCount( ) if self.panel.batchRowCount() > 1 else 0 for row, selected_idx in enumerate(selected): value = layers[selected_idx].id() self.setRowValue(first_row + row, value, context)
def resolveDataObjects(self): layers = QgsProcessingUtils.compatibleLayers(QgsProject.instance()) for param in self.parameters: if isinstance(param, (ParameterRaster, ParameterVector, ParameterTable, ParameterMultipleInput)): if param.value: if isinstance(param, ParameterMultipleInput): inputlayers = param.value.split(';') else: inputlayers = [param.value] for i, inputlayer in enumerate(inputlayers): for layer in layers: if layer.name() == inputlayer: inputlayers[i] = layer.source() break param.setValue(";".join(inputlayers))
def useLayerExtent(self): extentsDict = {} extents = [] layers = QgsProcessingUtils.compatibleLayers(QgsProject.instance()) for layer in layers: authid = layer.crs().authid() if ProcessingConfig.getSetting(ProcessingConfig.SHOW_CRS_DEF) \ and authid is not None: layerName = u'{} [{}]'.format(layer.name(), authid) else: layerName = layer.name() extents.append(layerName) extentsDict[layerName] = {"extent": layer.extent(), "authid": authid} (item, ok) = QInputDialog.getItem(self, self.tr('Select Extent'), self.tr('Use extent from'), extents, 0, False) if ok: self.setValueFromRect(QgsReferencedRectangle(extentsDict[item]["extent"], QgsCoordinateReferenceSystem(extentsDict[item]["authid"])))
def useLayerExtent(self): CANVAS_KEY = 'Use canvas extent' extentsDict = {} extentsDict[CANVAS_KEY] = {"extent": iface.mapCanvas().extent(), "authid": iface.mapCanvas().mapSettings().destinationCrs().authid()} extents = [CANVAS_KEY] layers = QgsProcessingUtils.compatibleLayers(QgsProject.instance()) for layer in layers: authid = layer.crs().authid() if ProcessingConfig.getSetting(ProcessingConfig.SHOW_CRS_DEF) \ and authid is not None: layerName = u'{} [{}]'.format(layer.name(), authid) else: layerName = layer.name() extents.append(layerName) extentsDict[layerName] = {"extent": layer.extent(), "authid": authid} (item, ok) = QInputDialog.getItem(self, self.tr('Select extent'), self.tr('Use extent from'), extents, False) if ok: self.setValueFromRect(extentsDict[item]["extent"]) if extentsDict[item]["authid"] != iface.mapCanvas().mapSettings().destinationCrs().authid(): iface.messageBar().pushMessage(self.tr("Warning"), self.tr("The projection of the chosen layer is not the same as canvas projection! The selected extent might not be what was intended."), QgsMessageBar.WARNING, 8)
def showLayerSelectionDialog(self): layers = [] if (isinstance(self.param, QgsProcessingParameterRasterLayer) or (isinstance(self.param, QgsProcessingParameterMultipleLayers) and self.param.layerType() == QgsProcessing.TypeRaster)): layers = QgsProcessingUtils.compatibleRasterLayers( QgsProject.instance()) elif isinstance(self.param, QgsProcessingParameterVectorLayer): layers = QgsProcessingUtils.compatibleVectorLayers( QgsProject.instance()) elif isinstance(self.param, QgsProcessingParameterMapLayer): layers = QgsProcessingUtils.compatibleLayers(QgsProject.instance()) elif (isinstance(self.param, QgsProcessingParameterMeshLayer) or (isinstance(self.param, QgsProcessingParameterMultipleLayers) and self.param.layerType() == QgsProcessing.TypeMesh)): layers = QgsProcessingUtils.compatibleMeshLayers( QgsProject.instance()) else: datatypes = [QgsProcessing.TypeVectorAnyGeometry] if isinstance(self.param, QgsProcessingParameterFeatureSource): datatypes = self.param.dataTypes() elif isinstance(self.param, QgsProcessingParameterMultipleLayers): datatypes = [self.param.layerType()] if QgsProcessing.TypeVectorAnyGeometry not in datatypes: layers = QgsProcessingUtils.compatibleVectorLayers( QgsProject.instance(), datatypes) else: layers = QgsProcessingUtils.compatibleVectorLayers( QgsProject.instance()) dlg = MultipleInputDialog([layer.name() for layer in layers]) dlg.exec_() def generate_layer_id(layer): # prefer layer name if unique if len([ l for l in layers if l.name().lower() == layer.name().lower() ]) == 1: return layer.name() else: # otherwise fall back to layer id return layer.id() if dlg.selectedoptions is not None: selected = dlg.selectedoptions if len(selected) == 1: self.setValue(generate_layer_id(layers[selected[0]])) else: if isinstance(self.param, QgsProcessingParameterMultipleLayers): self.text.setText(';'.join(layers[idx].id() for idx in selected)) else: rowdif = len(selected) - (self._table().rowCount() - self.row) for i in range(rowdif): self._panel().addRow() for i, layeridx in enumerate(selected): self._table().cellWidget( i + self.row, self.col).setValue( generate_layer_id(layers[layeridx]))