resolve merge conflict

cura/CuraApplication.py

@@ -501,11 +501,6 @@ class CuraApplication(QtApplication):
     def getStaticVersion(cls):
         return CuraVersion
 
-    ##  Handle removing the unneeded plugins
-    #   \sa PluginRegistry
-    def _removePlugins(self):
-        self._plugin_registry.removePlugins()
-
     ##  Handle loading of all plugin types (and the backend explicitly)
     #   \sa PluginRegistry
     def _loadPlugins(self):

cura/Utils/Threading.py

@@ -0,0 +1,34 @@
+import threading
+
+from cura.CuraApplication import CuraApplication
+
+
+#
+# HACK:
+#
+# In project loading, when override the existing machine is selected, the stacks and containers that are correctly
+# active in the system will be overridden at runtime. Because the project loading is done in a different thread than
+# the Qt thread, something else can kick in the middle of the process. One of them is the rendering. It will access
+# the current stacks and container, which have not completely been updated yet, so Cura will crash in this case.
+#
+# This "@call_on_qt_thread" decorator makes sure that a function will always be called on the Qt thread (blocking).
+# It is applied to the read() function of project loading so it can be guaranteed that only after the project loading
+# process is completely done, everything else that needs to occupy the QT thread will be executed.
+#
+class InterCallObject:
+    def __init__(self):
+        self.finish_event = threading.Event()
+        self.result = None
+
+
+def call_on_qt_thread(func):
+    def _call_on_qt_thread_wrapper(*args, **kwargs):
+        def _handle_call(ico, *args, **kwargs):
+            ico.result = func(*args, **kwargs)
+            ico.finish_event.set()
+        inter_call_object = InterCallObject()
+        new_args = tuple([inter_call_object] + list(args)[:])
+        CuraApplication.getInstance().callLater(_handle_call, *new_args, **kwargs)
+        inter_call_object.finish_event.wait()
+        return inter_call_object.result
+    return _call_on_qt_thread_wrapper

plugins/3MFReader/ThreeMFWorkspaceReader.py

@@ -7,6 +7,7 @@ import os
 import threading
 from typing import List, Tuple
 
+
 import xml.etree.ElementTree as ET
 
 from UM.Workspace.WorkspaceReader import WorkspaceReader
@@ -28,43 +29,13 @@ from cura.Settings.ExtruderStack import ExtruderStack
 from cura.Settings.GlobalStack import GlobalStack
 from cura.Settings.CuraContainerStack import _ContainerIndexes
 from cura.CuraApplication import CuraApplication
+from cura.Utils.Threading import call_on_qt_thread
 
 from .WorkspaceDialog import WorkspaceDialog
 
 i18n_catalog = i18nCatalog("cura")
 
 
-#
-# HACK:
-#
-# In project loading, when override the existing machine is selected, the stacks and containers that are correctly
-# active in the system will be overridden at runtime. Because the project loading is done in a different thread than
-# the Qt thread, something else can kick in the middle of the process. One of them is the rendering. It will access
-# the current stacks and container, which have not completely been updated yet, so Cura will crash in this case.
-#
-# This "@call_on_qt_thread" decorator makes sure that a function will always be called on the Qt thread (blocking).
-# It is applied to the read() function of project loading so it can be guaranteed that only after the project loading
-# process is completely done, everything else that needs to occupy the QT thread will be executed.
-#
-class InterCallObject:
-    def __init__(self):
-        self.finish_event = threading.Event()
-        self.result = None
-
-
-def call_on_qt_thread(func):
-    def _call_on_qt_thread_wrapper(*args, **kwargs):
-        def _handle_call(ico, *args, **kwargs):
-            ico.result = func(*args, **kwargs)
-            ico.finish_event.set()
-        inter_call_object = InterCallObject()
-        new_args = tuple([inter_call_object] + list(args)[:])
-        CuraApplication.getInstance().callLater(_handle_call, *new_args, **kwargs)
-        inter_call_object.finish_event.wait()
-        return inter_call_object.result
-    return _call_on_qt_thread_wrapper
-
-
 class ContainerInfo:
     def __init__(self, file_name: str, serialized: str, parser: ConfigParser):
         self.file_name = file_name

plugins/3MFWriter/ThreeMFWorkspaceWriter.py

@@ -6,16 +6,18 @@ from io import StringIO
 import zipfile
 
 from UM.Application import Application
-from UM.Logger import Logger
 from UM.Preferences import Preferences
 from UM.Settings.ContainerRegistry import ContainerRegistry
 from UM.Workspace.WorkspaceWriter import WorkspaceWriter
 
+from cura.Utils.Threading import call_on_qt_thread
+
 
 class ThreeMFWorkspaceWriter(WorkspaceWriter):
     def __init__(self):
         super().__init__()
 
+    @call_on_qt_thread
     def write(self, stream, nodes, mode=WorkspaceWriter.OutputMode.BinaryMode):
         application = Application.getInstance()
         machine_manager = application.getMachineManager()

plugins/CuraEngineBackend/CuraEngineBackend.py

@@ -121,7 +121,7 @@ class CuraEngineBackend(QObject, Backend):
         self._slice_start_time = None
         self._is_disabled = False
 
-        Preferences.getInstance().addPreference("general/auto_slice", True)
+        Preferences.getInstance().addPreference("general/auto_slice", False)
 
         self._use_timer = False
         # When you update a setting and other settings get changed through inheritance, many propertyChanged signals are fired.

plugins/ModelChecker/ModelChecker.py

@@ -49,6 +49,13 @@ class ModelChecker(QObject, Extension):
         warning_size_xy = 150 #The horizontal size of a model that would be too large when dealing with shrinking materials.
         warning_size_z = 100 #The vertical size of a model that would be too large when dealing with shrinking materials.
 
+        # This function can be triggered in the middle of a machine change, so do not proceed if the machine change
+        # has not done yet.
+        global_container_stack = Application.getInstance().getGlobalContainerStack()
+        if global_container_stack is None:
+            Application.getInstance().callLater(lambda: self.onChanged.emit())
+            return False
+
         material_shrinkage = self._getMaterialShrinkage()
 
         warning_nodes = []
@@ -56,6 +63,13 @@ class ModelChecker(QObject, Extension):
         # Check node material shrinkage and bounding box size
         for node in self.sliceableNodes():
             node_extruder_position = node.callDecoration("getActiveExtruderPosition")
+
+            # This function can be triggered in the middle of a machine change, so do not proceed if the machine change
+            # has not done yet.
+            if str(node_extruder_position) not in global_container_stack.extruders:
+                Application.getInstance().callLater(lambda: self.onChanged.emit())
+                return False
+
             if material_shrinkage[node_extruder_position] > shrinkage_threshold:
                 bbox = node.getBoundingBox()
                 if bbox.width >= warning_size_xy or bbox.depth >= warning_size_xy or bbox.height >= warning_size_z:
@@ -63,11 +77,11 @@ class ModelChecker(QObject, Extension):
 
         self._caution_message.setText(catalog.i18nc(
             "@info:status",
-            "Some models may not be printed optimally due to object size and chosen material for models: {model_names}.\n"
-            "Tips that may be useful to improve the print quality:\n"
-            "1) Use rounded corners.\n"
-            "2) Turn the fan off (only if there are no tiny details on the model).\n"
-            "3) Use a different material.").format(model_names = ", ".join([n.getName() for n in warning_nodes])))
+            "<p>One or more 3D models may not print optimally due to the model size and material configuration:</p>\n"
+            "<p>{model_names}</p>\n"
+            "<p>Find out how to ensure the best possible print quality and reliability.</p>\n"
+            "<p><a href=\"https://ultimaker.com/3D-model-assistant\">View print quality guide</a></p>"
+            ).format(model_names = ", ".join([n.getName() for n in warning_nodes])))
 
         return len(warning_nodes) > 0
 
@@ -92,9 +106,8 @@ class ModelChecker(QObject, Extension):
         Logger.log("d", "Model checker view created.")
 
     @pyqtProperty(bool, notify = onChanged)
-    def runChecks(self):
+    def hasWarnings(self):
         danger_shrinkage = self.checkObjectsForShrinkage()
-
         return any((danger_shrinkage, )) #If any of the checks fail, show the warning button.
 
     @pyqtSlot()

plugins/ModelChecker/ModelChecker.qml

@@ -18,7 +18,7 @@ Button
 
     UM.I18nCatalog{id: catalog; name:"cura"}
 
-    visible: manager.runChecks
+    visible: manager.hasWarnings
     tooltip: catalog.i18nc("@info:tooltip", "Some things could be problematic in this print. Click to see tips for adjustment.")
     onClicked: manager.showWarnings()