Add control to set the number of extruders in Machine Settings

plugins/MachineSettingsAction/MachineSettingsAction.py

@@ -29,6 +29,7 @@ class MachineSettingsAction(MachineAction):
 
         self._container_registry = ContainerRegistry.getInstance()
         self._container_registry.containerAdded.connect(self._onContainerAdded)
+        Application.getInstance().globalContainerStackChanged.connect(self._onGlobalContainerChanged)
 
     def _reset(self):
         global_container_stack = Application.getInstance().getGlobalContainerStack()
@@ -67,13 +68,21 @@ class MachineSettingsAction(MachineAction):
     def _onContainerAdded(self, container):
         # Add this action as a supported action to all machine definitions
         if isinstance(container, DefinitionContainer) and container.getMetaDataEntry("type") == "machine":
-            if container.getProperty("machine_extruder_count", "value") > 1:
-                # Multiextruder printers are not currently supported
-                Logger.log("d", "Not attaching MachineSettingsAction to %s; Multi-extrusion printers are not supported", container.getId())
-                return
-
             Application.getInstance().getMachineActionManager().addSupportedAction(container.getId(), self.getKey())
 
+    def _onGlobalContainerChanged(self):
+        self.globalContainerChanged.emit()
+
+    globalContainerChanged = pyqtSignal()
+
+    @pyqtProperty(int, notify = globalContainerChanged)
+    def definedExtruderCount(self):
+        global_container_stack = Application.getInstance().getGlobalContainerStack()
+        if not global_container_stack:
+            return 0
+
+        return len(global_container_stack.getMetaDataEntry("machine_extruder_trains"))
+
     @pyqtSlot()
     def forceUpdate(self):
         # Force rebuilding the build volume by reloading the global container stack.

plugins/MachineSettingsAction/MachineSettingsAction.qml

@@ -345,6 +345,35 @@ Cura.MachineAction
                         Item { width: UM.Theme.getSize("default_margin").width; height: UM.Theme.getSize("default_margin").height }
                         Item { width: UM.Theme.getSize("default_margin").width; height: UM.Theme.getSize("default_margin").height }
 
+                        Label
+                        {
+                            text: catalog.i18nc("@label", "Number of Extruders")
+                        }
+
+                        ComboBox
+                        {
+                            id: extruderCountComboBox
+                            model: ListModel
+                            {
+                                id: extruderCountModel
+                                Component.onCompleted:
+                                {
+                                    for(var i = 0; i < manager.definedExtruderCount; i++)
+                                    {
+                                        extruderCountModel.append({text: String(i + 1), value: i});
+                                    }
+                                }
+                            }
+                        currentIndex: machineExtruderCountProvider.properties.value - 1
+                            onActivated:
+                            {
+                                machineExtruderCountProvider.setPropertyValue("value", index + 1);
+                                manager.forceUpdate();
+                            }
+                        }
+                        Item { width: UM.Theme.getSize("default_margin").width; height: UM.Theme.getSize("default_margin").height }
+
+
                         Label
                         {
                             text: catalog.i18nc("@label", "Nozzle size")
@@ -532,6 +561,16 @@ Cura.MachineAction
         storeIndex: manager.containerIndex
     }
 
+    UM.SettingPropertyProvider
+    {
+        id: machineExtruderCountProvider
+
+        containerStackId: Cura.MachineManager.activeMachineId
+        key: "machine_extruder_count"
+        watchedProperties: [ "value" ]
+        storeIndex: manager.containerIndex
+    }
+
     UM.SettingPropertyProvider
     {
         id: gantryHeightProvider