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- # Copyright (c) 2016 Ultimaker B.V.
- # Cura is released under the terms of the LGPLv3 or higher.
- import copy
- from UM.Scene.SceneNodeDecorator import SceneNodeDecorator
- from UM.Signal import Signal, signalemitter
- from UM.Settings.InstanceContainer import InstanceContainer
- from UM.Settings.ContainerRegistry import ContainerRegistry
- from UM.Logger import Logger
- from UM.Application import Application
- from cura.Settings.PerObjectContainerStack import PerObjectContainerStack
- from cura.Settings.ExtruderManager import ExtruderManager
- ## A decorator that adds a container stack to a Node. This stack should be queried for all settings regarding
- # the linked node. The Stack in question will refer to the global stack (so that settings that are not defined by
- # this stack still resolve.
- @signalemitter
- class SettingOverrideDecorator(SceneNodeDecorator):
- ## Event indicating that the user selected a different extruder.
- activeExtruderChanged = Signal()
- ## Non-printing meshes
- #
- # If these settings are True for any mesh, the mesh does not need a convex hull,
- # and is sent to the slicer regardless of whether it fits inside the build volume.
- # Note that Support Mesh is not in here because it actually generates
- # g-code in the volume of the mesh.
- _non_printing_mesh_settings = {"anti_overhang_mesh", "infill_mesh", "cutting_mesh"}
- def __init__(self):
- super().__init__()
- self._stack = PerObjectContainerStack(stack_id = "per_object_stack_" + str(id(self)))
- self._stack.setDirty(False) # This stack does not need to be saved.
- self._stack.addContainer(InstanceContainer(container_id = "SettingOverrideInstanceContainer"))
- self._extruder_stack = ExtruderManager.getInstance().getExtruderStack(0).getId()
- self._is_non_printing_mesh = False
- self._stack.propertyChanged.connect(self._onSettingChanged)
- Application.getInstance().getContainerRegistry().addContainer(self._stack)
- Application.getInstance().globalContainerStackChanged.connect(self._updateNextStack)
- self.activeExtruderChanged.connect(self._updateNextStack)
- self._updateNextStack()
- def __deepcopy__(self, memo):
- ## Create a fresh decorator object
- deep_copy = SettingOverrideDecorator()
- ## Copy the instance
- instance_container = copy.deepcopy(self._stack.getContainer(0), memo)
- ## Set the copied instance as the first (and only) instance container of the stack.
- deep_copy._stack.replaceContainer(0, instance_container)
- # Properly set the right extruder on the copy
- deep_copy.setActiveExtruder(self._extruder_stack)
- # use value from the stack because there can be a delay in signal triggering and "_is_non_printing_mesh"
- # has not been updated yet.
- deep_copy._is_non_printing_mesh = any(bool(self._stack.getProperty(setting, "value")) for setting in self._non_printing_mesh_settings)
- return deep_copy
- ## Gets the currently active extruder to print this object with.
- #
- # \return An extruder's container stack.
- def getActiveExtruder(self):
- return self._extruder_stack
- ## Gets the signal that emits if the active extruder changed.
- #
- # This can then be accessed via a decorator.
- def getActiveExtruderChangedSignal(self):
- return self.activeExtruderChanged
- ## Gets the currently active extruders position
- #
- # \return An extruder's position, or None if no position info is available.
- def getActiveExtruderPosition(self):
- containers = ContainerRegistry.getInstance().findContainers(id = self.getActiveExtruder())
- if containers:
- container_stack = containers[0]
- return container_stack.getMetaDataEntry("position", default=None)
- def isNonPrintingMesh(self):
- return self._is_non_printing_mesh
- def _onSettingChanged(self, instance, property_name): # Reminder: 'property' is a built-in function
- # Trigger slice/need slicing if the value has changed.
- if property_name == "value":
- self._is_non_printing_mesh = any(bool(self._stack.getProperty(setting, "value")) for setting in self._non_printing_mesh_settings)
- Application.getInstance().getBackend().needsSlicing()
- Application.getInstance().getBackend().tickle()
- ## Makes sure that the stack upon which the container stack is placed is
- # kept up to date.
- def _updateNextStack(self):
- if self._extruder_stack:
- extruder_stack = ContainerRegistry.getInstance().findContainerStacks(id = self._extruder_stack)
- if extruder_stack:
- if self._stack.getNextStack():
- old_extruder_stack_id = self._stack.getNextStack().getId()
- else:
- old_extruder_stack_id = ""
- self._stack.setNextStack(extruder_stack[0])
- # Trigger slice/need slicing if the extruder changed.
- if self._stack.getNextStack().getId() != old_extruder_stack_id:
- Application.getInstance().getBackend().needsSlicing()
- Application.getInstance().getBackend().tickle()
- else:
- Logger.log("e", "Extruder stack %s below per-object settings does not exist.", self._extruder_stack)
- else:
- self._stack.setNextStack(Application.getInstance().getGlobalContainerStack())
- ## Changes the extruder with which to print this node.
- #
- # \param extruder_stack_id The new extruder stack to print with.
- def setActiveExtruder(self, extruder_stack_id):
- self._extruder_stack = extruder_stack_id
- self._updateNextStack()
- ExtruderManager.getInstance().resetSelectedObjectExtruders()
- self.activeExtruderChanged.emit()
- def getStack(self):
- return self._stack
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