Cura/cura/Machines/Models/BaseMaterialsModel.py
Ghostkeeper f5ca29c7aa
Emit materialsChanged from the variant when a material gets added
This allows the material models to update themselves.

Contributes to issue CURA-6600.
2019-08-27 18:01:35 +02:00

172 lines
8.3 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.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()
self._extruder_position = 0
self._extruder_stack = None
self._enabled = True
# 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, 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._available_materials = None # type: Optional[Dict[str, MaterialNode]]
self._favorite_ids = set() # type: Set[str]
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
global_stack = cura.CuraApplication.CuraApplication.getInstance().getGlobalContainerStack()
if not global_stack:
return
if material.variant.machine.container_id != global_stack.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(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()
extruder_stack = global_stack.extruders.get(str(self._extruder_position))
if not extruder_stack:
return
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