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5c898b8c57
Gracefully handle the case where the machine manager is requested to delete the last machine in Cura. In this case, instead of deleting everything of this machine and still keep it as an active machine, the machine manager will set the active machine to None. The QML files which depend on the active machine were changed to properly handle themselves when there is no active machine. CURA-7454
214 lines
10 KiB
Python
214 lines
10 KiB
Python
# Copyright (c) 2019 Ultimaker B.V.
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# Cura is released under the terms of the LGPLv3 or higher.
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from typing import Dict, Set
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from PyQt5.QtCore import Qt, QTimer, pyqtSignal, pyqtProperty
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from UM.Qt.ListModel import ListModel
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from UM.Logger import Logger
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import cura.CuraApplication # Imported like this to prevent a circular reference.
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from cura.Machines.ContainerTree import ContainerTree
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from cura.Machines.MaterialNode import MaterialNode
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from cura.Settings.CuraContainerRegistry import CuraContainerRegistry
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class BaseMaterialsModel(ListModel):
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"""This is the base model class for GenericMaterialsModel and MaterialBrandsModel.
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Those 2 models are used by the material drop down menu to show generic materials and branded materials
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separately. The extruder position defined here is being used to bound a menu to the correct extruder. This is
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used in the top bar menu "Settings" -> "Extruder nr" -> "Material" -> this menu
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"""
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extruderPositionChanged = pyqtSignal()
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enabledChanged = pyqtSignal()
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def __init__(self, parent = None):
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super().__init__(parent)
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from cura.CuraApplication import CuraApplication
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self._application = CuraApplication.getInstance()
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self._available_materials = {} # type: Dict[str, MaterialNode]
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self._favorite_ids = set() # type: Set[str]
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# Make these managers available to all material models
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self._container_registry = self._application.getInstance().getContainerRegistry()
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self._machine_manager = self._application.getMachineManager()
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self._extruder_position = 0
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self._extruder_stack = None
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self._enabled = True
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# CURA-6904
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# Updating the material model requires information from material nodes and containers. We use a timer here to
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# make sure that an update function call will not be directly invoked by an event. Because the triggered event
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# can be caused in the middle of a XMLMaterial loading, and the material container we try to find may not be
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# in the system yet. This will cause an infinite recursion of (1) trying to load a material, (2) trying to
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# update the material model, (3) cannot find the material container, load it, (4) repeat #1.
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self._update_timer = QTimer(self)
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self._update_timer.setInterval(100)
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self._update_timer.setSingleShot(True)
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self._update_timer.timeout.connect(self._update)
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# Update the stack and the model data when the machine changes
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self._machine_manager.globalContainerChanged.connect(self._updateExtruderStack)
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self._updateExtruderStack()
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# Update this model when switching machines or tabs, when adding materials or changing their metadata.
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self._machine_manager.activeStackChanged.connect(self._onChanged)
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ContainerTree.getInstance().materialsChanged.connect(self._materialsListChanged)
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self._application.getMaterialManagementModel().favoritesChanged.connect(self._onChanged)
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self.addRoleName(Qt.UserRole + 1, "root_material_id")
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self.addRoleName(Qt.UserRole + 2, "id")
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self.addRoleName(Qt.UserRole + 3, "GUID")
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self.addRoleName(Qt.UserRole + 4, "name")
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self.addRoleName(Qt.UserRole + 5, "brand")
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self.addRoleName(Qt.UserRole + 6, "description")
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self.addRoleName(Qt.UserRole + 7, "material")
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self.addRoleName(Qt.UserRole + 8, "color_name")
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self.addRoleName(Qt.UserRole + 9, "color_code")
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self.addRoleName(Qt.UserRole + 10, "density")
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self.addRoleName(Qt.UserRole + 11, "diameter")
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self.addRoleName(Qt.UserRole + 12, "approximate_diameter")
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self.addRoleName(Qt.UserRole + 13, "adhesion_info")
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self.addRoleName(Qt.UserRole + 14, "is_read_only")
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self.addRoleName(Qt.UserRole + 15, "container_node")
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self.addRoleName(Qt.UserRole + 16, "is_favorite")
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def _onChanged(self) -> None:
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self._update_timer.start()
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def _updateExtruderStack(self):
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global_stack = self._machine_manager.activeMachine
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if global_stack is None:
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return
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if self._extruder_stack is not None:
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self._extruder_stack.pyqtContainersChanged.disconnect(self._onChanged)
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self._extruder_stack.approximateMaterialDiameterChanged.disconnect(self._onChanged)
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try:
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self._extruder_stack = global_stack.extruderList[self._extruder_position]
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except IndexError:
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self._extruder_stack = None
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if self._extruder_stack is not None:
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self._extruder_stack.pyqtContainersChanged.connect(self._onChanged)
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self._extruder_stack.approximateMaterialDiameterChanged.connect(self._onChanged)
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# Force update the model when the extruder stack changes
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self._onChanged()
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def setExtruderPosition(self, position: int):
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if self._extruder_stack is None or self._extruder_position != position:
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self._extruder_position = position
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self._updateExtruderStack()
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self.extruderPositionChanged.emit()
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@pyqtProperty(int, fset = setExtruderPosition, notify = extruderPositionChanged)
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def extruderPosition(self) -> int:
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return self._extruder_position
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def setEnabled(self, enabled):
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if self._enabled != enabled:
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self._enabled = enabled
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if self._enabled:
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# ensure the data is there again.
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self._onChanged()
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self.enabledChanged.emit()
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@pyqtProperty(bool, fset = setEnabled, notify = enabledChanged)
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def enabled(self):
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return self._enabled
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def _materialsListChanged(self, material: MaterialNode) -> None:
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"""Triggered when a list of materials changed somewhere in the container
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tree. This change may trigger an _update() call when the materials changed for the configuration that this
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model is looking for.
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"""
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if self._extruder_stack is None:
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return
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if material.variant.container_id != self._extruder_stack.variant.getId():
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return
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global_stack = cura.CuraApplication.CuraApplication.getInstance().getGlobalContainerStack()
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if not global_stack:
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return
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if material.variant.machine.container_id != global_stack.definition.getId():
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return
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self._onChanged()
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def _favoritesChanged(self, material_base_file: str) -> None:
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"""Triggered when the list of favorite materials is changed."""
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if material_base_file in self._available_materials:
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self._onChanged()
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def _update(self):
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"""This is an abstract method that needs to be implemented by the specific models themselves. """
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self._favorite_ids = set(cura.CuraApplication.CuraApplication.getInstance().getPreferences().getValue("cura/favorite_materials").split(";"))
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# Update the available materials (ContainerNode) for the current active machine and extruder setup.
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global_stack = cura.CuraApplication.CuraApplication.getInstance().getGlobalContainerStack()
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if not global_stack or not global_stack.hasMaterials:
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return # There are no materials for this machine, so nothing to do.
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extruder_list = global_stack.extruderList
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if self._extruder_position > len(extruder_list):
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return
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extruder_stack = extruder_list[self._extruder_position]
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nozzle_name = extruder_stack.variant.getName()
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machine_node = ContainerTree.getInstance().machines[global_stack.definition.getId()]
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if nozzle_name not in machine_node.variants:
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Logger.log("w", "Unable to find variant %s in container tree", nozzle_name)
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self._available_materials = {}
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return
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materials = machine_node.variants[nozzle_name].materials
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approximate_material_diameter = extruder_stack.getApproximateMaterialDiameter()
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self._available_materials = {key: material for key, material in materials.items() if float(material.getMetaDataEntry("approximate_diameter", -1)) == approximate_material_diameter}
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def _canUpdate(self):
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"""This method is used by all material models in the beginning of the _update() method in order to prevent
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errors. It's the same in all models so it's placed here for easy access. """
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global_stack = self._machine_manager.activeMachine
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if global_stack is None or not self._enabled:
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return False
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if self._extruder_position >= len(global_stack.extruderList):
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return False
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return True
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def _createMaterialItem(self, root_material_id, container_node):
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"""This is another convenience function which is shared by all material models so it's put here to avoid having
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so much duplicated code. """
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metadata_list = CuraContainerRegistry.getInstance().findContainersMetadata(id = container_node.container_id)
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if not metadata_list:
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return None
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metadata = metadata_list[0]
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item = {
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"root_material_id": root_material_id,
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"id": metadata["id"],
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"container_id": metadata["id"], # TODO: Remove duplicate in material manager qml
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"GUID": metadata["GUID"],
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"name": metadata["name"],
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"brand": metadata["brand"],
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"description": metadata["description"],
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"material": metadata["material"],
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"color_name": metadata["color_name"],
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"color_code": metadata.get("color_code", ""),
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"density": metadata.get("properties", {}).get("density", ""),
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"diameter": metadata.get("properties", {}).get("diameter", ""),
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"approximate_diameter": metadata["approximate_diameter"],
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"adhesion_info": metadata["adhesion_info"],
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"is_read_only": self._container_registry.isReadOnly(metadata["id"]),
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"container_node": container_node,
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"is_favorite": root_material_id in self._favorite_ids
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}
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return item
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