# Copyright (c) 2018 Ultimaker B.V. # Cura is released under the terms of the LGPLv3 or higher. from collections import defaultdict import threading from typing import Any, Dict, Optional, Set, TYPE_CHECKING, List from PyQt5.QtCore import pyqtProperty, pyqtSlot, pyqtSignal from UM.Decorators import override from UM.MimeTypeDatabase import MimeType, MimeTypeDatabase from UM.Settings.ContainerStack import ContainerStack from UM.Settings.SettingInstance import InstanceState from UM.Settings.ContainerRegistry import ContainerRegistry from UM.Settings.Interfaces import PropertyEvaluationContext from UM.Logger import Logger from UM.Resources import Resources from UM.Platform import Platform from UM.Util import parseBool import cura.CuraApplication from . import Exceptions from .CuraContainerStack import CuraContainerStack if TYPE_CHECKING: from cura.Settings.ExtruderStack import ExtruderStack ## Represents the Global or Machine stack and its related containers. # class GlobalStack(CuraContainerStack): def __init__(self, container_id: str) -> None: super().__init__(container_id) self.setMetaDataEntry("type", "machine") # For backward compatibility self._extruders = {} # type: Dict[str, "ExtruderStack"] # This property is used to track which settings we are calculating the "resolve" for # and if so, to bypass the resolve to prevent an infinite recursion that would occur # if the resolve function tried to access the same property it is a resolve for. # Per thread we have our own resolving_settings, or strange things sometimes occur. self._resolving_settings = defaultdict(set) #type: Dict[str, Set[str]] # keys are thread names extrudersChanged = pyqtSignal() ## Get the list of extruders of this stack. # # \return The extruders registered with this stack. @pyqtProperty("QVariantMap", notify = extrudersChanged) def extruders(self) -> Dict[str, "ExtruderStack"]: return self._extruders @pyqtProperty("QVariantList", notify = extrudersChanged) def extruderList(self) -> List["ExtruderStack"]: result_tuple_list = sorted(list(self.extruders.items()), key=lambda x: int(x[0])) result_list = [item[1] for item in result_tuple_list] machine_extruder_count = self.getProperty("machine_extruder_count", "value") return result_list[:machine_extruder_count] @classmethod def getLoadingPriority(cls) -> int: return 2 @classmethod def getConfigurationTypeFromSerialized(cls, serialized: str) -> Optional[str]: configuration_type = super().getConfigurationTypeFromSerialized(serialized) if configuration_type == "machine": return "machine_stack" return configuration_type def getBuildplateName(self) -> Optional[str]: name = None if self.variant.getId() != "empty_variant": name = self.variant.getName() return name @pyqtProperty(str, constant = True) def preferred_output_file_formats(self) -> str: return self.getMetaDataEntry("file_formats") ## Add an extruder to the list of extruders of this stack. # # \param extruder The extruder to add. # # \throws Exceptions.TooManyExtrudersError Raised when trying to add an extruder while we # already have the maximum number of extruders. def addExtruder(self, extruder: ContainerStack) -> None: position = extruder.getMetaDataEntry("position") if position is None: Logger.log("w", "No position defined for extruder {extruder}, cannot add it to stack {stack}", extruder = extruder.id, stack = self.id) return if any(item.getId() == extruder.id for item in self._extruders.values()): Logger.log("w", "Extruder [%s] has already been added to this stack [%s]", extruder.id, self.getId()) return self._extruders[position] = extruder self.extrudersChanged.emit() Logger.log("i", "Extruder[%s] added to [%s] at position [%s]", extruder.id, self.id, position) ## Overridden from ContainerStack # # This will return the value of the specified property for the specified setting, # unless the property is "value" and that setting has a "resolve" function set. # When a resolve is set, it will instead try and execute the resolve first and # then fall back to the normal "value" property. # # \param key The setting key to get the property of. # \param property_name The property to get the value of. # # \return The value of the property for the specified setting, or None if not found. @override(ContainerStack) def getProperty(self, key: str, property_name: str, context: Optional[PropertyEvaluationContext] = None) -> Any: if not self.definition.findDefinitions(key = key): return None if context is None: context = PropertyEvaluationContext() context.pushContainer(self) # Handle the "resolve" property. #TODO: Why the hell does this involve threading? # Answer: Because if multiple threads start resolving properties that have the same underlying properties that's # related, without taking a note of which thread a resolve paths belongs to, they can bump into each other and # generate unexpected behaviours. if self._shouldResolve(key, property_name, context): current_thread = threading.current_thread() self._resolving_settings[current_thread.name].add(key) resolve = super().getProperty(key, "resolve", context) self._resolving_settings[current_thread.name].remove(key) if resolve is not None: return resolve # Handle the "limit_to_extruder" property. limit_to_extruder = super().getProperty(key, "limit_to_extruder", context) if limit_to_extruder is not None: if limit_to_extruder == -1: limit_to_extruder = int(cura.CuraApplication.CuraApplication.getInstance().getMachineManager().defaultExtruderPosition) limit_to_extruder = str(limit_to_extruder) if limit_to_extruder is not None and limit_to_extruder != "-1" and limit_to_extruder in self._extruders: if super().getProperty(key, "settable_per_extruder", context): result = self._extruders[str(limit_to_extruder)].getProperty(key, property_name, context) if result is not None: context.popContainer() return result else: Logger.log("e", "Setting {setting} has limit_to_extruder but is not settable per extruder!", setting = key) result = super().getProperty(key, property_name, context) context.popContainer() return result ## Overridden from ContainerStack # # This will simply raise an exception since the Global stack cannot have a next stack. @override(ContainerStack) def setNextStack(self, stack: CuraContainerStack, connect_signals: bool = True) -> None: raise Exceptions.InvalidOperationError("Global stack cannot have a next stack!") # protected: # Determine whether or not we should try to get the "resolve" property instead of the # requested property. def _shouldResolve(self, key: str, property_name: str, context: Optional[PropertyEvaluationContext] = None) -> bool: if property_name is not "value": # Do not try to resolve anything but the "value" property return False current_thread = threading.current_thread() if key in self._resolving_settings[current_thread.name]: # To prevent infinite recursion, if getProperty is called with the same key as # we are already trying to resolve, we should not try to resolve again. Since # this can happen multiple times when trying to resolve a value, we need to # track all settings that are being resolved. return False setting_state = super().getProperty(key, "state", context = context) if setting_state is not None and setting_state != InstanceState.Default: # When the user has explicitly set a value, we should ignore any resolve and # just return that value. return False return True ## Perform some sanity checks on the global stack # Sanity check for extruders; they must have positions 0 and up to machine_extruder_count - 1 def isValid(self) -> bool: container_registry = ContainerRegistry.getInstance() extruder_trains = container_registry.findContainerStacks(type = "extruder_train", machine = self.getId()) machine_extruder_count = self.getProperty("machine_extruder_count", "value") extruder_check_position = set() for extruder_train in extruder_trains: extruder_position = extruder_train.getMetaDataEntry("position") extruder_check_position.add(extruder_position) for check_position in range(machine_extruder_count): if str(check_position) not in extruder_check_position: return False return True def getHeadAndFansCoordinates(self): return self.getProperty("machine_head_with_fans_polygon", "value") def getHasMaterials(self) -> bool: return parseBool(self.getMetaDataEntry("has_materials", False)) def getHasVariants(self) -> bool: return parseBool(self.getMetaDataEntry("has_variants", False)) def getHasMachineQuality(self) -> bool: return parseBool(self.getMetaDataEntry("has_machine_quality", False)) ## Get default firmware file name if one is specified in the firmware @pyqtSlot(result = str) def getDefaultFirmwareName(self) -> str: machine_has_heated_bed = self.getProperty("machine_heated_bed", "value") baudrate = 250000 if Platform.isLinux(): # Linux prefers a baudrate of 115200 here because older versions of # pySerial did not support a baudrate of 250000 baudrate = 115200 # If a firmware file is available, it should be specified in the definition for the printer hex_file = self.getMetaDataEntry("firmware_file", None) if machine_has_heated_bed: hex_file = self.getMetaDataEntry("firmware_hbk_file", hex_file) if not hex_file: Logger.log("w", "There is no firmware for machine %s.", self.getBottom().id) return "" try: return Resources.getPath(cura.CuraApplication.CuraApplication.ResourceTypes.Firmware, hex_file.format(baudrate=baudrate)) except FileNotFoundError: Logger.log("w", "Firmware file %s not found.", hex_file) return "" ## private: global_stack_mime = MimeType( name = "application/x-cura-globalstack", comment = "Cura Global Stack", suffixes = ["global.cfg"] ) MimeTypeDatabase.addMimeType(global_stack_mime) ContainerRegistry.addContainerTypeByName(GlobalStack, "global_stack", global_stack_mime.name)