def __init__(self, iface): # QGIS self.iface = iface self.settings = MySettings() self.linkRubber = QgsRubberBand(self.iface.mapCanvas()) self.featureHighlight = None # Relation management self.relationManager = QgsProject.instance().relationManager() self.relationManager.changed.connect(self.loadRelations) self.relation = QgsRelation() self.referencingFeature = QgsFeature() self.relationWidgetWrapper = None self.editorContext = QgsAttributeEditorContext() self.editorContext.setVectorLayerTools(self.iface.vectorLayerTools()) # GUI QDockWidget.__init__(self) self.setupUi(self) SettingDialog.__init__(self, MySettings(), False, True) self.drawButton.setChecked(self.settings.value("drawEnabled")) self.relationReferenceWidget.setAllowMapIdentification(True) self.relationReferenceWidget.setEmbedForm(False) self.mapTool = QgsMapToolIdentifyFeature(self.iface.mapCanvas()) self.mapTool.setButton(self.identifyReferencingFeatureButton) # Connect signal/slot self.relationComboBox.currentIndexChanged.connect( self.currentRelationChanged) self.mapTool.featureIdentified.connect(self.setReferencingFeature) # load relations at start self.loadRelations()
def __init__(self, iface): QObject.__init__(self) self.iface = iface self.linkerDock = LinkerDock(iface) self.settings = MySettings() self.mapLayerActions = {} QgsProject.instance().relationManager().changed.connect( self.loadRelations) self.loadRelations()
def __init__(self, iface): # QGIS self.iface = iface self.settings = MySettings() self.linkRubber = QgsRubberBand(self.iface.mapCanvas()) self.featureHighlight = None # Relation management self.relationManager = QgsProject.instance().relationManager() self.relationManager.changed.connect(self.loadRelations) self.relation = QgsRelation() self.referencingFeature = QgsFeature() self.relationWidgetWrapper = None self.editorContext = QgsAttributeEditorContext() self.editorContext.setVectorLayerTools(self.iface.vectorLayerTools()) # GUI QDockWidget.__init__(self) self.setupUi(self) SettingDialog.__init__(self, MySettings(), False, True) self.drawButton.setChecked(self.settings.value("drawEnabled")) self.relationReferenceWidget.setAllowMapIdentification(True) self.relationReferenceWidget.setEmbedForm(False) self.mapTool = QgsMapToolIdentifyFeature(self.iface.mapCanvas()) self.mapTool.setButton(self.identifyReferencingFeatureButton) # Connect signal/slot self.relationComboBox.currentIndexChanged.connect(self.currentRelationChanged) self.mapTool.featureIdentified.connect(self.setReferencingFeature) # load relations at start self.loadRelations()
def __init__(self, iface): QObject.__init__(self) self.iface = iface self.linkerDock = LinkerDock(iface) self.settings = MySettings() self.mapLayerActions = {} QgsProject.instance().relationManager().changed.connect(self.loadRelations) self.loadRelations()
class LinkerDock(QDockWidget, Ui_linker, SettingDialog): def __init__(self, iface): # QGIS self.iface = iface self.settings = MySettings() self.linkRubber = QgsRubberBand(self.iface.mapCanvas()) self.featureHighlight = None # Relation management self.relationManager = QgsProject.instance().relationManager() self.relationManager.changed.connect(self.loadRelations) self.relation = QgsRelation() self.referencingFeature = QgsFeature() self.relationWidgetWrapper = None self.editorContext = QgsAttributeEditorContext() self.editorContext.setVectorLayerTools(self.iface.vectorLayerTools()) # GUI QDockWidget.__init__(self) self.setupUi(self) SettingDialog.__init__(self, MySettings(), False, True) self.drawButton.setChecked(self.settings.value("drawEnabled")) self.relationReferenceWidget.setAllowMapIdentification(True) self.relationReferenceWidget.setEmbedForm(False) self.mapTool = QgsMapToolIdentifyFeature(self.iface.mapCanvas()) self.mapTool.setButton(self.identifyReferencingFeatureButton) # Connect signal/slot self.relationComboBox.currentIndexChanged.connect(self.currentRelationChanged) self.mapTool.featureIdentified.connect(self.setReferencingFeature) # load relations at start self.loadRelations() def showEvent(self, QShowEvent): self.drawLink() def closeEvent(self, e): self.iface.mapCanvas().unsetMapTool(self.mapTool) self.linkRubber.reset() self.deleteHighlight() self.deleteWrapper() self.disconnectLayer() def disconnectLayer(self): if self.relation.isValid(): self.relation.referencingLayer().editingStarted.disconnect(self.relationEditableChanged) self.relation.referencingLayer().editingStopped.disconnect(self.relationEditableChanged) self.relation.referencingLayer().attributeValueChanged.disconnect(self.layerValueChangedOutside) def runForFeature(self, relationId, layer, feature): index = self.relationComboBox.findData(relationId) self.relationComboBox.setCurrentIndex(index) self.setReferencingFeature(feature) self.show() if not layer.isEditable(): self.iface.messageBar().pushMessage("Link It", "Cannot set a new related feature since %s is not editable" % layer.name(), QgsMessageBar.WARNING, 4) else: self.relationReferenceWidget.mapIdentification() @pyqtSlot(name="on_identifyReferencingFeatureButton_clicked") def activateMapTool(self): self.iface.mapCanvas().setMapTool(self.mapTool) def deactivateMapTool(self): self.iface.mapCanvas().unsetMapTool(self.mapTool) def loadRelations(self): self.deleteWrapper() self.disconnectLayer() self.relation = QgsRelation() self.referencingFeature = QgsFeature() self.relationComboBox.currentIndexChanged.disconnect(self.currentRelationChanged) self.relationComboBox.clear() for relation in self.relationManager.referencedRelations(): if relation.referencingLayer().hasGeometryType(): self.relationComboBox.addItem(relation.name(), relation.id()) self.relationComboBox.setCurrentIndex(-1) self.relationComboBox.currentIndexChanged.connect(self.currentRelationChanged) self.currentRelationChanged(-1) def currentRelationChanged(self, index): # disconnect previous relation if self.relation.isValid(): try: self.relation.referencingLayer().editingStarted.disconnect(self.relationEditableChanged) self.relation.referencingLayer().editingStopped.disconnect(self.relationEditableChanged) self.relation.referencingLayer().attributeValueChanged.disconnect(self.layerValueChangedOutside) except TypeError: pass self.referencingFeatureLayout.setEnabled(index >= 0) relationId = self.relationComboBox.itemData(index) self.relation = self.relationManager.relation(relationId) self.mapTool.setLayer(self.relation.referencingLayer()) self.setReferencingFeature() # connect if self.relation.isValid(): self.relation.referencingLayer().editingStarted.connect(self.relationEditableChanged) self.relation.referencingLayer().editingStopped.connect(self.relationEditableChanged) self.relation.referencingLayer().attributeValueChanged.connect(self.layerValueChangedOutside) def setReferencingFeature(self, feature=QgsFeature()): self.deactivateMapTool() self.referencingFeature = QgsFeature(feature) self.deleteWrapper() # disable relation reference widget if no referencing feature self.referencedFeatureLayout.setEnabled(feature.isValid()) # set line edit if not self.relation.isValid() or not feature.isValid(): self.referencingFeatureLineEdit.clear() return self.referencingFeatureLineEdit.setText("%s" % feature.id()) fieldIdx = self.referencingFieldIndex() widgetConfig = self.relation.referencingLayer().editorWidgetV2Config(fieldIdx) self.relationWidgetWrapper = QgsEditorWidgetRegistry.instance().create("RelationReference", self.relation.referencingLayer(), fieldIdx, widgetConfig, self.relationReferenceWidget, self, self.editorContext) self.relationWidgetWrapper.setEnabled(self.relation.referencingLayer().isEditable()) self.relationWidgetWrapper.setValue(feature[fieldIdx]) self.relationWidgetWrapper.valueChanged.connect(self.foreignKeyChanged) # override field definition to allow map identification self.relationReferenceWidget.setAllowMapIdentification(True) self.relationReferenceWidget.setEmbedForm(False) # update drawn link self.highlightReferencingFeature() self.drawLink() def deleteWrapper(self): if self.relationWidgetWrapper is not None: self.relationWidgetWrapper.valueChanged.disconnect(self.foreignKeyChanged) self.relationWidgetWrapper.setValue(None) del self.relationWidgetWrapper self.relationWidgetWrapper = None def foreignKeyChanged(self, newKey): if not self.relation.isValid() or not self.relation.referencingLayer().isEditable() or not self.referencingFeature.isValid(): self.drawLink() return if not self.relation.referencingLayer().editBuffer().changeAttributeValue(self.referencingFeature.id(), self.referencingFieldIndex(), newKey): self.iface.messageBar().pushMessage("Link It", "Cannot change attribute value.", QgsMessageBar.CRITICAL) self.drawLink() def relationEditableChanged(self): if self.relationWidgetWrapper is not None: self.relationWidgetWrapper.setEnabled(self.relation.isValid() and self.relation.referencingLayer().isEditable()) def layerValueChangedOutside(self, fid, fieldIdx, value): if not self.relation.isValid() or not self.referencingFeature.isValid() or self.relationWidgetWrapper is None: return # not the correct feature if fid != self.referencingFeature.id(): return # not the correct field if fieldIdx != self.referencingFieldIndex(): return # widget already has this value if value == self.relationWidgetWrapper.value(): return self.relationWidgetWrapper.valueChanged.disconnect(self.foreignKeyChanged) self.relationWidgetWrapper.setValue(value) self.relationWidgetWrapper.valueChanged.connect(self.foreignKeyChanged) def referencingFieldIndex(self): if not self.relation.isValid(): return -1 fieldName = self.relation.fieldPairs().keys()[0] fieldIdx = self.relation.referencingLayer().fieldNameIndex(fieldName) return fieldIdx @pyqtSlot(bool, name="on_drawButton_toggled") def drawLink(self): self.settings.setValue("drawEnabled", self.drawButton.isChecked()) self.linkRubber.reset() if not self.drawButton.isChecked() or not self.referencingFeature.isValid() or not self.relation.isValid(): return referencedFeature = self.relationReferenceWidget.referencedFeature() if not referencedFeature.isValid(): return p1 = self.centroid(self.relation.referencedLayer(), referencedFeature) p2 = self.centroid(self.relation.referencingLayer(), self.referencingFeature) geom = arc(p1, p2) self.linkRubber.setToGeometry(geom, None) self.linkRubber.setWidth(self.settings.value("rubberWidth")) self.linkRubber.setColor(self.settings.value("rubberColor")) self.linkRubber.setLineStyle(Qt.DashLine) def centroid(self, layer, feature): geom = feature.geometry() if geom.type() == QGis.Line: geom = geom.interpolate(geom.length()/2) else: geom = geom.centroid() return self.iface.mapCanvas().mapSettings().layerToMapCoordinates(layer, geom.asPoint()) @pyqtSlot(name="on_highlightReferencingFeatureButton_clicked") def highlightReferencingFeature(self): self.deleteHighlight() if not self.relation.isValid() or not self.referencingFeature.isValid(): return self.featureHighlight = QgsHighlight(self.iface.mapCanvas(), self.referencingFeature.geometry(), self.relation.referencingLayer()) settings = QSettings() color = QColor( settings.value("/Map/highlight/color", QGis.DEFAULT_HIGHLIGHT_COLOR.name())) alpha = int(settings.value("/Map/highlight/colorAlpha", QGis.DEFAULT_HIGHLIGHT_COLOR.alpha())) bbuffer = float(settings.value("/Map/highlight/buffer", QGis.DEFAULT_HIGHLIGHT_BUFFER_MM)) minWidth = float(settings.value("/Map/highlight/minWidth", QGis.DEFAULT_HIGHLIGHT_MIN_WIDTH_MM)) self.featureHighlight.setColor(color) color.setAlpha(alpha) self.featureHighlight.setFillColor(color) self.featureHighlight.setBuffer(bbuffer) self.featureHighlight.setMinWidth(minWidth) self.featureHighlight.show() timer = QTimer(self) timer.setSingleShot(True) timer.timeout.connect(self.deleteHighlight) timer.start(3000) def deleteHighlight(self): if self.featureHighlight: del self.featureHighlight self.featureHighlight = None
class LinkIt(QObject): def __init__(self, iface): QObject.__init__(self) self.iface = iface self.linkerDock = LinkerDock(iface) self.settings = MySettings() self.mapLayerActions = {} QgsProject.instance().relationManager().changed.connect( self.loadRelations) self.loadRelations() def initGui(self): dockVisible = self.settings.value("dockVisible") dockArea = self.settings.value("dockArea") if dockArea not in (Qt.LeftDockWidgetArea, Qt.RightDockWidgetArea, Qt.TopDockWidgetArea, Qt.BottomDockWidgetArea): dockArea = Qt.LeftDockWidgetArea self.iface.addDockWidget(dockArea, self.linkerDock) self.linkerDock.setVisible(dockVisible) self.linkerDock.visibilityChanged.connect(self.dockVisibilityChanged) self.linkerDock.dockLocationChanged.connect(self.saveDockLocation) # Show dock self.showDockAction = QAction( QIcon(":/plugins/linkit/icons/linkit.png"), "Show link editor", self) self.showDockAction.setCheckable(True) self.showDockAction.setChecked(dockVisible) self.showDockAction.triggered.connect(self.linkerDock.setVisible) self.iface.addPluginToMenu("&Link It", self.showDockAction) self.iface.addToolBarIcon(self.showDockAction) # help self.helpAction = QAction(QIcon(":/plugins/linkit/icons/help.png"), "Help", self) self.helpAction.triggered.connect(lambda: QDesktopServices().openUrl( QUrl("http://3nids.github.io/linkit"))) self.iface.addPluginToMenu("&Link It", self.helpAction) def unload(self): self.linkerDock.visibilityChanged.disconnect( self.dockVisibilityChanged) self.linkerDock.deactivateMapTool() self.linkerDock.close() self.iface.removePluginMenu("&Link It", self.showDockAction) self.iface.removeToolBarIcon(self.showDockAction) self.iface.removePluginMenu("&Link It", self.helpAction) self.iface.removeDockWidget(self.linkerDock) def loadRelations(self): relations = QgsProject.instance().relationManager( ).referencedRelations() newRelationsIds = [relation.id() for relation in relations] # remove actions for relationId in self.mapLayerActions.keys(): if relationId not in newRelationsIds: QgsMapLayerActionRegistry.instance().removeMapLayerAction( self.mapLayerActions[relationId]) del self.mapLayerActions[relationId] # add actions for relation in relations: if relation.id() not in self.mapLayerActions: action = QgsMapLayerAction( "set related feature for %s" % relation.name(), self, relation.referencingLayer(), QgsMapLayerAction.SingleFeature) QgsMapLayerActionRegistry.instance().addMapLayerAction(action) action.triggeredForFeature.connect(self.linkIt) self.mapLayerActions[relation.id()] = action def linkIt(self, layer, feature): senderAction = self.sender() for relationId, action in self.mapLayerActions.iteritems(): if action == senderAction: self.linkerDock.runForFeature(relationId, layer, feature) return def dockVisibilityChanged(self, dockVisible): self.showDockAction.setChecked(dockVisible) self.settings.setValue("dockVisible", dockVisible) def saveDockLocation(self, dockWidgetArea): self.settings.setValue("dockArea", int(dockWidgetArea))
class LinkIt(QObject): def __init__(self, iface): QObject.__init__(self) self.iface = iface self.linkerDock = LinkerDock(iface) self.settings = MySettings() self.mapLayerActions = {} QgsProject.instance().relationManager().changed.connect(self.loadRelations) self.loadRelations() def initGui(self): dockVisible = self.settings.value("dockVisible") dockArea = self.settings.value("dockArea") if dockArea not in (Qt.LeftDockWidgetArea, Qt.RightDockWidgetArea, Qt.TopDockWidgetArea, Qt.BottomDockWidgetArea): dockArea = Qt.LeftDockWidgetArea self.iface.addDockWidget(dockArea, self.linkerDock) self.linkerDock.setVisible(dockVisible) self.linkerDock.visibilityChanged.connect(self.dockVisibilityChanged) self.linkerDock.dockLocationChanged.connect(self.saveDockLocation) # Show dock self.showDockAction = QAction(QIcon(":/plugins/linkit/icons/linkit.png"), "Show link editor", self) self.showDockAction.setCheckable(True) self.showDockAction.setChecked(dockVisible) self.showDockAction.triggered.connect(self.linkerDock.setVisible) self.iface.addPluginToMenu("&Link It", self.showDockAction) self.iface.addToolBarIcon(self.showDockAction) # help self.helpAction = QAction(QIcon(":/plugins/linkit/icons/help.png"), "Help", self) self.helpAction.triggered.connect(lambda: QDesktopServices().openUrl(QUrl("http://3nids.github.io/linkit"))) self.iface.addPluginToMenu("&Link It", self.helpAction) def unload(self): self.linkerDock.visibilityChanged.disconnect(self.dockVisibilityChanged) self.linkerDock.deactivateMapTool() self.linkerDock.close() self.iface.removePluginMenu("&Link It", self.showDockAction) self.iface.removeToolBarIcon(self.showDockAction) self.iface.removePluginMenu("&Link It", self.helpAction) self.iface.removeDockWidget(self.linkerDock) def loadRelations(self): relations = QgsProject.instance().relationManager().referencedRelations() newRelationsIds = [relation.id() for relation in relations] # remove actions for relationId in self.mapLayerActions.keys(): if relationId not in newRelationsIds: QgsMapLayerActionRegistry.instance().removeMapLayerAction(self.mapLayerActions[relationId]) del self.mapLayerActions[relationId] # add actions for relation in relations: if relation.id() not in self.mapLayerActions: action = QgsMapLayerAction("set related feature for %s" % relation.name(), self, relation.referencingLayer(), QgsMapLayerAction.SingleFeature) QgsMapLayerActionRegistry.instance().addMapLayerAction(action) action.triggeredForFeature.connect(self.linkIt) self.mapLayerActions[relation.id()] = action def linkIt(self, layer, feature): senderAction = self.sender() for relationId, action in self.mapLayerActions.iteritems(): if action == senderAction: self.linkerDock.runForFeature(relationId, layer, feature) return def dockVisibilityChanged(self, dockVisible): self.showDockAction.setChecked(dockVisible) self.settings.setValue("dockVisible", dockVisible) def saveDockLocation(self, dockWidgetArea): self.settings.setValue("dockArea", int(dockWidgetArea))
class LinkerDock(QDockWidget, Ui_linker, SettingDialog): def __init__(self, iface): # QGIS self.iface = iface self.settings = MySettings() self.linkRubber = QgsRubberBand(self.iface.mapCanvas()) self.featureHighlight = None # Relation management self.relationManager = QgsProject.instance().relationManager() self.relationManager.changed.connect(self.loadRelations) self.relation = QgsRelation() self.referencingFeature = QgsFeature() self.relationWidgetWrapper = None self.editorContext = QgsAttributeEditorContext() self.editorContext.setVectorLayerTools(self.iface.vectorLayerTools()) # GUI QDockWidget.__init__(self) self.setupUi(self) SettingDialog.__init__(self, MySettings(), False, True) self.drawButton.setChecked(self.settings.value("drawEnabled")) self.relationReferenceWidget.setAllowMapIdentification(True) self.relationReferenceWidget.setEmbedForm(False) self.mapTool = QgsMapToolIdentifyFeature(self.iface.mapCanvas()) self.mapTool.setButton(self.identifyReferencingFeatureButton) # Connect signal/slot self.relationComboBox.currentIndexChanged.connect( self.currentRelationChanged) self.mapTool.featureIdentified.connect(self.setReferencingFeature) # load relations at start self.loadRelations() def showEvent(self, QShowEvent): self.drawLink() def closeEvent(self, e): self.iface.mapCanvas().unsetMapTool(self.mapTool) self.linkRubber.reset() self.deleteHighlight() self.deleteWrapper() self.disconnectLayer() def disconnectLayer(self): if self.relation.isValid(): self.relation.referencingLayer().editingStarted.disconnect( self.relationEditableChanged) self.relation.referencingLayer().editingStopped.disconnect( self.relationEditableChanged) self.relation.referencingLayer().attributeValueChanged.disconnect( self.layerValueChangedOutside) def runForFeature(self, relationId, layer, feature): index = self.relationComboBox.findData(relationId) self.relationComboBox.setCurrentIndex(index) self.setReferencingFeature(feature) self.show() if not layer.isEditable(): self.iface.messageBar().pushMessage( "Link It", "Cannot set a new related feature since %s is not editable" % layer.name(), QgsMessageBar.WARNING, 4) else: self.relationReferenceWidget.mapIdentification() @pyqtSlot(name="on_identifyReferencingFeatureButton_clicked") def activateMapTool(self): self.iface.mapCanvas().setMapTool(self.mapTool) def deactivateMapTool(self): self.iface.mapCanvas().unsetMapTool(self.mapTool) def loadRelations(self): self.deleteWrapper() self.disconnectLayer() self.relation = QgsRelation() self.referencingFeature = QgsFeature() self.relationComboBox.currentIndexChanged.disconnect( self.currentRelationChanged) self.relationComboBox.clear() for relation in self.relationManager.referencedRelations(): if relation.referencingLayer().hasGeometryType(): self.relationComboBox.addItem(relation.name(), relation.id()) self.relationComboBox.setCurrentIndex(-1) self.relationComboBox.currentIndexChanged.connect( self.currentRelationChanged) self.currentRelationChanged(-1) def currentRelationChanged(self, index): # disconnect previous relation if self.relation.isValid(): try: self.relation.referencingLayer().editingStarted.disconnect( self.relationEditableChanged) self.relation.referencingLayer().editingStopped.disconnect( self.relationEditableChanged) self.relation.referencingLayer( ).attributeValueChanged.disconnect( self.layerValueChangedOutside) except TypeError: pass self.referencingFeatureLayout.setEnabled(index >= 0) relationId = self.relationComboBox.itemData(index) self.relation = self.relationManager.relation(relationId) self.mapTool.setLayer(self.relation.referencingLayer()) self.setReferencingFeature() # connect if self.relation.isValid(): self.relation.referencingLayer().editingStarted.connect( self.relationEditableChanged) self.relation.referencingLayer().editingStopped.connect( self.relationEditableChanged) self.relation.referencingLayer().attributeValueChanged.connect( self.layerValueChangedOutside) def setReferencingFeature(self, feature=QgsFeature()): self.deactivateMapTool() self.referencingFeature = QgsFeature(feature) self.deleteWrapper() # disable relation reference widget if no referencing feature self.referencedFeatureLayout.setEnabled(feature.isValid()) # set line edit if not self.relation.isValid() or not feature.isValid(): self.referencingFeatureLineEdit.clear() return self.referencingFeatureLineEdit.setText("%s" % feature.id()) fieldIdx = self.referencingFieldIndex() widgetConfig = self.relation.referencingLayer().editorWidgetV2Config( fieldIdx) self.relationWidgetWrapper = QgsEditorWidgetRegistry.instance().create( "RelationReference", self.relation.referencingLayer(), fieldIdx, widgetConfig, self.relationReferenceWidget, self, self.editorContext) self.relationWidgetWrapper.setEnabled( self.relation.referencingLayer().isEditable()) self.relationWidgetWrapper.setValue(feature[fieldIdx]) self.relationWidgetWrapper.valueChanged.connect(self.foreignKeyChanged) # override field definition to allow map identification self.relationReferenceWidget.setAllowMapIdentification(True) self.relationReferenceWidget.setEmbedForm(False) # update drawn link self.highlightReferencingFeature() self.drawLink() def deleteWrapper(self): if self.relationWidgetWrapper is not None: self.relationWidgetWrapper.valueChanged.disconnect( self.foreignKeyChanged) self.relationWidgetWrapper.setValue(None) del self.relationWidgetWrapper self.relationWidgetWrapper = None def foreignKeyChanged(self, newKey): if not self.relation.isValid() or not self.relation.referencingLayer( ).isEditable() or not self.referencingFeature.isValid(): self.drawLink() return if not self.relation.referencingLayer().editBuffer( ).changeAttributeValue(self.referencingFeature.id(), self.referencingFieldIndex(), newKey): self.iface.messageBar().pushMessage( "Link It", "Cannot change attribute value.", QgsMessageBar.CRITICAL) self.drawLink() def relationEditableChanged(self): if self.relationWidgetWrapper is not None: self.relationWidgetWrapper.setEnabled( self.relation.isValid() and self.relation.referencingLayer().isEditable()) def layerValueChangedOutside(self, fid, fieldIdx, value): if not self.relation.isValid() or not self.referencingFeature.isValid( ) or self.relationWidgetWrapper is None: return # not the correct feature if fid != self.referencingFeature.id(): return # not the correct field if fieldIdx != self.referencingFieldIndex(): return # widget already has this value if value == self.relationWidgetWrapper.value(): return self.relationWidgetWrapper.valueChanged.disconnect( self.foreignKeyChanged) self.relationWidgetWrapper.setValue(value) self.relationWidgetWrapper.valueChanged.connect(self.foreignKeyChanged) def referencingFieldIndex(self): if not self.relation.isValid(): return -1 fieldName = self.relation.fieldPairs().keys()[0] fieldIdx = self.relation.referencingLayer().fieldNameIndex(fieldName) return fieldIdx @pyqtSlot(bool, name="on_drawButton_toggled") def drawLink(self): self.settings.setValue("drawEnabled", self.drawButton.isChecked()) self.linkRubber.reset() if not self.drawButton.isChecked( ) or not self.referencingFeature.isValid( ) or not self.relation.isValid(): return referencedFeature = self.relationReferenceWidget.referencedFeature() if not referencedFeature.isValid(): return p1 = self.centroid(self.relation.referencedLayer(), referencedFeature) p2 = self.centroid(self.relation.referencingLayer(), self.referencingFeature) geom = arc(p1, p2) self.linkRubber.setToGeometry(geom, None) self.linkRubber.setWidth(self.settings.value("rubberWidth")) self.linkRubber.setColor(self.settings.value("rubberColor")) self.linkRubber.setLineStyle(Qt.DashLine) def centroid(self, layer, feature): geom = feature.geometry() if geom.type() == QGis.Line: geom = geom.interpolate(geom.length() / 2) else: geom = geom.centroid() return self.iface.mapCanvas().mapSettings().layerToMapCoordinates( layer, geom.asPoint()) @pyqtSlot(name="on_highlightReferencingFeatureButton_clicked") def highlightReferencingFeature(self): self.deleteHighlight() if not self.relation.isValid() or not self.referencingFeature.isValid( ): return self.featureHighlight = QgsHighlight( self.iface.mapCanvas(), self.referencingFeature.geometry(), self.relation.referencingLayer()) settings = QSettings() color = QColor( settings.value("/Map/highlight/color", QGis.DEFAULT_HIGHLIGHT_COLOR.name())) alpha = int( settings.value("/Map/highlight/colorAlpha", QGis.DEFAULT_HIGHLIGHT_COLOR.alpha())) bbuffer = float( settings.value("/Map/highlight/buffer", QGis.DEFAULT_HIGHLIGHT_BUFFER_MM)) minWidth = float( settings.value("/Map/highlight/minWidth", QGis.DEFAULT_HIGHLIGHT_MIN_WIDTH_MM)) self.featureHighlight.setColor(color) color.setAlpha(alpha) self.featureHighlight.setFillColor(color) self.featureHighlight.setBuffer(bbuffer) self.featureHighlight.setMinWidth(minWidth) self.featureHighlight.show() timer = QTimer(self) timer.setSingleShot(True) timer.timeout.connect(self.deleteHighlight) timer.start(3000) def deleteHighlight(self): if self.featureHighlight: del self.featureHighlight self.featureHighlight = None