Add some extra information when the Cura can't write the files.

plugins/3MFWriter/ThreeMFWriter.py

@@ -25,6 +25,9 @@ except ImportError:
 import zipfile
 import UM.Application
 
+from UM.i18n import i18nCatalog
+catalog = i18nCatalog("cura")
+
 
 class ThreeMFWriter(MeshWriter):
     def __init__(self):
@@ -173,6 +176,7 @@ class ThreeMFWriter(MeshWriter):
             archive.writestr(relations_file, b'<?xml version="1.0" encoding="UTF-8"?> \n' + ET.tostring(relations_element))
         except Exception as e:
             Logger.logException("e", "Error writing zip file")
+            self.setInformation(catalog.i18nc("@error:zip", "Error writing 3mf file."))
             return False
         finally:
             if not self._store_archive:

plugins/GCodeGzWriter/GCodeGzWriter.py

@@ -10,6 +10,9 @@ from UM.Mesh.MeshWriter import MeshWriter #The class we're extending/implementin
 from UM.PluginRegistry import PluginRegistry
 from UM.Scene.SceneNode import SceneNode #For typing.
 
+from UM.i18n import i18nCatalog
+catalog = i18nCatalog("cura")
+
 ##  A file writer that writes gzipped g-code.
 #
 #   If you're zipping g-code, you might as well use gzip!
@@ -28,12 +31,15 @@ class GCodeGzWriter(MeshWriter):
     def write(self, stream: BufferedIOBase, nodes: List[SceneNode], mode = MeshWriter.OutputMode.BinaryMode) -> bool:
         if mode != MeshWriter.OutputMode.BinaryMode:
             Logger.log("e", "GCodeGzWriter does not support text mode.")
+            self.setInformation(catalog.i18nc("@error:not supported", "GCodeGzWriter does not support text mode."))
             return False
 
         #Get the g-code from the g-code writer.
         gcode_textio = StringIO() #We have to convert the g-code into bytes.
-        success = cast(MeshWriter, PluginRegistry.getInstance().getPluginObject("GCodeWriter")).write(gcode_textio, None)
+        gcode_writer = cast(MeshWriter, PluginRegistry.getInstance().getPluginObject("GCodeWriter"))
+        success = gcode_writer.write(gcode_textio, None)
         if not success: #Writing the g-code failed. Then I can also not write the gzipped g-code.
+            self.setInformation(gcode_writer.getInformation())
             return False
 
         result = gzip.compress(gcode_textio.getvalue().encode("utf-8"))

plugins/GCodeWriter/GCodeWriter.py

@@ -12,6 +12,8 @@ from UM.Settings.InstanceContainer import InstanceContainer
 
 from cura.Machines.QualityManager import getMachineDefinitionIDForQualitySearch
 
+from UM.i18n import i18nCatalog
+catalog = i18nCatalog("cura")
 
 ##  Writes g-code to a file.
 #
@@ -62,11 +64,13 @@ class GCodeWriter(MeshWriter):
     def write(self, stream, nodes, mode = MeshWriter.OutputMode.TextMode):
         if mode != MeshWriter.OutputMode.TextMode:
             Logger.log("e", "GCodeWriter does not support non-text mode.")
+            self.setInformation(catalog.i18nc("@error:not supported", "GCodeWriter does not support non-text mode."))
             return False
 
         active_build_plate = Application.getInstance().getMultiBuildPlateModel().activeBuildPlate
         scene = Application.getInstance().getController().getScene()
         if not hasattr(scene, "gcode_dict"):
+            self.setInformation(catalog.i18nc("@warning:status", "Please generate G-code before saving."))
             return False
         gcode_dict = getattr(scene, "gcode_dict")
         gcode_list = gcode_dict.get(active_build_plate, None)
@@ -82,6 +86,7 @@ class GCodeWriter(MeshWriter):
                 stream.write(settings)
             return True
 
+        self.setInformation(catalog.i18nc("@warning:status", "Please generate G-code before saving."))
         return False
 
     ##  Create a new container with container 2 as base and container 1 written over it.

plugins/UFPWriter/UFPWriter.py

@@ -1,5 +1,6 @@
 #Copyright (c) 2018 Ultimaker B.V.
 #Cura is released under the terms of the LGPLv3 or higher.
+from typing import cast
 
 from Charon.VirtualFile import VirtualFile #To open UFP files.
 from Charon.OpenMode import OpenMode #To indicate that we want to write to UFP files.
@@ -13,6 +14,9 @@ from PyQt5.QtCore import QBuffer
 
 from cura.Snapshot import Snapshot
 
+from UM.i18n import i18nCatalog
+catalog = i18nCatalog("cura")
+
 
 class UFPWriter(MeshWriter):
     def __init__(self):
@@ -32,7 +36,11 @@ class UFPWriter(MeshWriter):
         #Store the g-code from the scene.
         archive.addContentType(extension = "gcode", mime_type = "text/x-gcode")
         gcode_textio = StringIO() #We have to convert the g-code into bytes.
-        PluginRegistry.getInstance().getPluginObject("GCodeWriter").write(gcode_textio, None)
+        gcode_writer = cast(MeshWriter, PluginRegistry.getInstance().getPluginObject("GCodeWriter"))
+        success = gcode_writer.write(gcode_textio, None)
+        if not success: #Writing the g-code failed. Then I can also not write the gzipped g-code.
+            self.setInformation(gcode_writer.getInformation())
+            return False
         gcode = archive.getStream("/3D/model.gcode")
         gcode.write(gcode_textio.getvalue().encode("UTF-8"))
         archive.addRelation(virtual_path = "/3D/model.gcode", relation_type = "http://schemas.ultimaker.org/package/2018/relationships/gcode")