Cura/plugins/MachineSettingsAction/MachineSettingsAction.py

# Copyright (c) 2016 Ultimaker B.V.
# Cura is released under the terms of the AGPLv3 or higher.

from PyQt5.QtCore import pyqtProperty, pyqtSignal
from UM.FlameProfiler import pyqtSlot

from cura.MachineAction import MachineAction

from UM.Application import Application
from UM.Settings.InstanceContainer import InstanceContainer
from UM.Settings.ContainerRegistry import ContainerRegistry
from UM.Settings.DefinitionContainer import DefinitionContainer
from UM.Logger import Logger

from cura.Settings.CuraContainerRegistry import CuraContainerRegistry
from cura.Settings.ExtruderManager import ExtruderManager

import UM.i18n
catalog = UM.i18n.i18nCatalog("cura")


##  This action allows for certain settings that are "machine only") to be modified.
#   It automatically detects machine definitions that it knows how to change and attaches itself to those.
class MachineSettingsAction(MachineAction):
    def __init__(self, parent = None):
        super().__init__("MachineSettingsAction", catalog.i18nc("@action", "Machine Settings"))
        self._qml_url = "MachineSettingsAction.qml"

        self._global_container_stack = None
        self._container_index = 0
        self._extruder_container_index = 0

        self._container_registry = ContainerRegistry.getInstance()
        self._container_registry.containerAdded.connect(self._onContainerAdded)
        Application.getInstance().globalContainerStackChanged.connect(self._onGlobalContainerChanged)
        ExtruderManager.getInstance().activeExtruderChanged.connect(self._onActiveExtruderStackChanged)

        self._backend = Application.getInstance().getBackend()

    def _reset(self):
        if not self._global_container_stack:
            return

        # Make sure there is a definition_changes container to store the machine settings
        definition_changes_container = self._global_container_stack.findContainer({"type": "definition_changes"})
        if not definition_changes_container:
            definition_changes_container = self._createDefinitionChangesContainer(self._global_container_stack, self._global_container_stack.getName() + "_settings")

        # Notify the UI in which container to store the machine settings data
        container_index = self._global_container_stack.getContainerIndex(definition_changes_container)
        if container_index != self._container_index:
            self._container_index = container_index
            self.containerIndexChanged.emit()

        # Disable autoslicing while the machineaction is showing
        self._backend.disableTimer()

    @pyqtSlot()
    def onFinishAction(self):
        # Restore autoslicing when the machineaction is dismissed
        if self._backend.determineAutoSlicing():
            self._backend.tickle()

    def _onActiveExtruderStackChanged(self):
        extruder_container_stack = ExtruderManager.getInstance().getActiveExtruderStack()
        if not self._global_container_stack or not extruder_container_stack:
            return

        # Make sure there is a definition_changes container to store the machine settings
        definition_changes_container = extruder_container_stack.findContainer({"type": "definition_changes"})
        if not definition_changes_container:
            definition_changes_container = self._createDefinitionChangesContainer(extruder_container_stack, extruder_container_stack.getId() + "_settings")

        # Notify the UI in which container to store the machine settings data
        container_index = extruder_container_stack.getContainerIndex(definition_changes_container)
        if container_index != self._extruder_container_index:
            self._extruder_container_index = container_index
            self.extruderContainerIndexChanged.emit()

    def _createDefinitionChangesContainer(self, container_stack, container_name, container_index = None):
        definition_changes_container = InstanceContainer(container_name)
        definition = container_stack.getBottom()
        definition_changes_container.setDefinition(definition)
        definition_changes_container.addMetaDataEntry("type", "definition_changes")

        self._container_registry.addContainer(definition_changes_container)
        # Insert definition_changes between the definition and the variant
        container_stack.insertContainer(-1, definition_changes_container)

        return definition_changes_container

    containerIndexChanged = pyqtSignal()

    @pyqtProperty(int, notify = containerIndexChanged)
    def containerIndex(self):
        return self._container_index

    extruderContainerIndexChanged = pyqtSignal()

    @pyqtProperty(int, notify = extruderContainerIndexChanged)
    def extruderContainerIndex(self):
        return self._extruder_container_index


    def _onContainerAdded(self, container):
        # Add this action as a supported action to all machine definitions
        if isinstance(container, DefinitionContainer) and container.getMetaDataEntry("type") == "machine":
            Application.getInstance().getMachineActionManager().addSupportedAction(container.getId(), self.getKey())

    def _onGlobalContainerChanged(self):
        self._global_container_stack = Application.getInstance().getGlobalContainerStack()

        # This additional emit is needed because we cannot connect a UM.Signal directly to a pyqtSignal
        self.globalContainerChanged.emit()

    globalContainerChanged = pyqtSignal()

    @pyqtProperty(int, notify = globalContainerChanged)
    def definedExtruderCount(self):
        if not self._global_container_stack:
            return 0

        return len(self._global_container_stack.getMetaDataEntry("machine_extruder_trains"))

    @pyqtSlot(int)
    def setMachineExtruderCount(self, extruder_count):
        machine_manager = Application.getInstance().getMachineManager()
        extruder_manager = ExtruderManager.getInstance()

        definition_changes_container = self._global_container_stack.findContainer({"type": "definition_changes"})
        if not self._global_container_stack or not definition_changes_container:
            return

        if extruder_count == self._global_container_stack.getProperty("machine_extruder_count", "value"):
            return

        extruder_material = None
        if extruder_count == 1 and machine_manager.hasMaterials:
            extruder_material = machine_manager.allActiveMaterialIds[machine_manager.activeStackId]

        definition_changes_container.setProperty("machine_extruder_count", "value", extruder_count)
        self.forceUpdate()

        if extruder_count > 1:
            # multiextrusion; make sure one of these extruder stacks is active
            if extruder_manager.activeExtruderIndex == -1:
                extruder_manager.setActiveExtruderIndex(0)
        else:
            # single extrusion; make sure the machine stack is active
            if extruder_manager.activeExtruderIndex > -1:
                extruder_manager.setActiveExtruderIndex(-1);

            if extruder_material:
                # restore material on global stack
                # MachineManager._onGlobalContainerChanged removes the global material of multiextruder machines
                machine_manager.setActiveMaterial(extruder_material);


    @pyqtSlot()
    def forceUpdate(self):
        # Force rebuilding the build volume by reloading the global container stack.
        # This is a bit of a hack, but it seems quick enough.
        Application.getInstance().globalContainerStackChanged.emit()

    @pyqtSlot()
    def updateHasMaterialsMetadata(self):
        # Updates the has_materials metadata flag after switching gcode flavor
        if not self._global_container_stack:
            return

        definition = self._global_container_stack.getBottom()
        if definition.getProperty("machine_gcode_flavor", "value") == "UltiGCode" and not definition.getMetaDataEntry("has_materials", False):
            has_materials = self._global_container_stack.getProperty("machine_gcode_flavor", "value") != "UltiGCode"

            material_container = self._global_container_stack.findContainer({"type": "material"})
            material_index = self._global_container_stack.getContainerIndex(material_container)

            if has_materials:
                if "has_materials" in self._global_container_stack.getMetaData():
                    self._global_container_stack.setMetaDataEntry("has_materials", True)
                else:
                    self._global_container_stack.addMetaDataEntry("has_materials", True)

                # Set the material container to a sane default
                if material_container.getId() == "empty_material":
                    search_criteria = { "type": "material", "definition": "fdmprinter", "id": "*pla*" }
                    containers = self._container_registry.findInstanceContainers(**search_criteria)
                    if containers:
                        self._global_container_stack.replaceContainer(material_index, containers[0])
            else:
                # The metadata entry is stored in an ini, and ini files are parsed as strings only.
                # Because any non-empty string evaluates to a boolean True, we have to remove the entry to make it False.
                if "has_materials" in self._global_container_stack.getMetaData():
                    self._global_container_stack.removeMetaDataEntry("has_materials")

                empty_material = self._container_registry.findInstanceContainers(id = "empty_material")[0]
                self._global_container_stack.replaceContainer(material_index, empty_material)

            Application.getInstance().globalContainerStackChanged.emit()