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