Cura/cura/Machines/Models/BaseMaterialsModel.py
Ghostkeeper 8ef410e826
Update the _available_materials in the actual _update function
It's confusing that this would be updated in the _canUpdate function. Just cleanliness.

Contributes to issue CURA-6600.
2019-08-22 09:25:26 +02:00

170 lines
8.2 KiB
Python

# Copyright (c) 2019 Ultimaker B.V.
# Cura is released under the terms of the LGPLv3 or higher.
from typing import Optional, Dict, Set
from PyQt5.QtCore import Qt, pyqtSignal, pyqtProperty
from UM.Preferences import Preferences
from UM.Qt.ListModel import ListModel
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
## 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
class BaseMaterialsModel(ListModel):
extruderPositionChanged = pyqtSignal()
enabledChanged = pyqtSignal()
def __init__(self, parent = None):
super().__init__(parent)
from cura.CuraApplication import CuraApplication
self._application = CuraApplication.getInstance()
# Make these managers available to all material models
self._container_registry = self._application.getInstance().getContainerRegistry()
self._machine_manager = self._application.getMachineManager()
# Update the stack and the model data when the machine changes
self._machine_manager.globalContainerChanged.connect(self._updateExtruderStack)
# Update this model when switching machines, when adding materials or changing their metadata.
self._machine_manager.activeStackChanged.connect(self._update)
ContainerTree.getInstance().materialsChanged.connect(self._materialsListChanged)
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")
self._extruder_position = 0
self._extruder_stack = None
self._available_materials = None # type: Optional[Dict[str, MaterialNode]]
self._favorite_ids = set() # type: Set[str]
self._enabled = True
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._update)
self._extruder_stack.approximateMaterialDiameterChanged.disconnect(self._update)
self._extruder_stack = global_stack.extruders.get(str(self._extruder_position))
if self._extruder_stack is not None:
self._extruder_stack.pyqtContainersChanged.connect(self._update)
self._extruder_stack.approximateMaterialDiameterChanged.connect(self._update)
# Force update the model when the extruder stack changes
self._update()
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._update()
self.enabledChanged.emit()
@pyqtProperty(bool, fset=setEnabled, notify=enabledChanged)
def enabled(self):
return self._enabled
## 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.
def _materialsListChanged(self, material: MaterialNode) -> None:
if material.variant.container_id != self._extruder_stack.variant.getId():
return
if material.variant.machine.container_id != cura.CuraApplication.CuraApplication.getInstance().getGlobalContainerStack().definition.getId():
return
self._update()
## This is an abstract method that needs to be implemented by the specific
# models themselves.
def _update(self):
self._favorite_ids = set(Preferences.getInstance().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()
extruder_stack = global_stack.extruders[str(self._extruder_position)]
nozzle_name = None
if extruder_stack.variant.getId() != "empty_variant":
nozzle_name = extruder_stack.variant.getName()
materials = ContainerTree.getInstance().machines[global_stack.definition.getId()].variants[nozzle_name].materials
compatible_material_diameter = str(round(extruder_stack.getCompatibleMaterialDiameter()))
self._available_materials = {key: material for key, material in materials.items() if material.container.getMetaDataEntry("approximate_diameter") == compatible_material_diameter}
## 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.
def _canUpdate(self):
global_stack = self._machine_manager.activeMachine
if global_stack is None or not self._enabled:
return False
extruder_position = str(self._extruder_position)
if extruder_position not in global_stack.extruders:
return False
return True
## This is another convenience function which is shared by all material
# models so it's put here to avoid having so much duplicated code.
def _createMaterialItem(self, root_material_id, container_node):
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