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47 lines
2.7 KiB
Python
47 lines
2.7 KiB
Python
# Copyright (c) 2016 Ultimaker B.V.
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# Cura is released under the terms of the AGPLv3 or higher.
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import re
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from cura.Extruder import Extruder #The individual extruders managed by this manager.
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from UM.Application import Application #To get the global container stack to find the current machine.
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from UM.Logger import Logger
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from UM.Settings.ContainerStack import ContainerStack #To create container stacks for each extruder.
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from UM.Settings.ContainerRegistry import ContainerRegistry #Finding containers by ID.
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## Class that handles the current extruder stack.
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#
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# This finds the extruders that are available for the currently active machine
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# and makes sure that whenever the machine is swapped, this list is kept up to
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# date. It also contains and updates the setting stacks for the extruders.
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class ExtruderManager:
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## Registers listeners and such to listen to changes to the extruders.
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def __init__(self):
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self._extruderDefinitions = [] #Extruder definitions for the current machine.
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self._nozzles = {} #Nozzle instances for each extruder.
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self._extruderTrains = [] #Container stacks for each of the extruder trains.
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Application.getInstance().getGlobalContainerStack().containersChanged.connect(self._reloadExtruders) #When the current machine changes, we need to reload all extruders belonging to the new machine.
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## (Re)loads all extruders of the currently active machine.
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#
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# This looks at the global container stack to see which machine is active.
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# Then it loads the extruders for that machine and loads each of them in a
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# list of extruders.
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def _reloadExtruders(self):
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self._extruders = []
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global_container_stack = Application.getInstance().getGlobalContainerStack()
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if not global_container_stack: #No machine has been added yet.
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return #Then leave them empty!
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#Get the extruder definitions belonging to the current machine.
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machine = global_container_stack.getBottom()
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extruder_train_ids = machine.getMetaData("machine_extruder_trains")
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for extruder_train_id in extruder_train_ids:
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extruder_definitions = ContainerRegistry.getInstance().findDefinitionContainers(id = extruder_train_id) #Should be only 1 definition if IDs are unique, but add the whole list anyway.
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if not extruder_definitions: #Empty list or error.
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Logger.log("w", "Machine definition %s refers to an extruder train \"%s\", but no such extruder was found.", machine.getId(), extruder_train_id)
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continue
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for extruder_definition in extruder_definitions:
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self._extruders.append(Extruder(extruder_definition)) |