Merge pull request #1267 from alephobjects/GCODEReader_upstream

Add a Gcode reader plugin

cura/BlockSlicingDecorator.py

@@ -0,0 +1,9 @@
+from UM.Scene.SceneNodeDecorator import SceneNodeDecorator
+
+
+class BlockSlicingDecorator(SceneNodeDecorator):
+    def __init__(self):
+        super().__init__()
+
+    def isBlockSlicing(self):
+        return True

cura/CuraApplication.py

@@ -19,6 +19,8 @@ from UM.SaveFile import SaveFile
 from UM.Scene.Selection import Selection
 from UM.Scene.GroupDecorator import GroupDecorator
 from UM.Settings.Validator import Validator
+from UM.Message import Message
+from UM.i18n import i18nCatalog
 
 from UM.Operations.AddSceneNodeOperation import AddSceneNodeOperation
 from UM.Operations.RemoveSceneNodeOperation import RemoveSceneNodeOperation
@@ -26,13 +28,13 @@ from UM.Operations.GroupedOperation import GroupedOperation
 from UM.Operations.SetTransformOperation import SetTransformOperation
 from UM.Operations.TranslateOperation import TranslateOperation
 from cura.SetParentOperation import SetParentOperation
+from cura.SliceableObjectDecorator import SliceableObjectDecorator
+from cura.BlockSlicingDecorator import BlockSlicingDecorator
 
 from UM.Settings.SettingDefinition import SettingDefinition, DefinitionPropertyType
 from UM.Settings.ContainerRegistry import ContainerRegistry
 from UM.Settings.SettingFunction import SettingFunction
 
-from UM.i18n import i18nCatalog
-
 from . import PlatformPhysics
 from . import BuildVolume
 from . import CameraAnimation
@@ -135,6 +137,9 @@ class CuraApplication(QtApplication):
             }
         )
 
+        self._currently_loading_files = []
+        self._non_sliceable_extensions = []
+
         self._machine_action_manager = MachineActionManager.MachineActionManager()
         self._machine_manager = None    # This is initialized on demand.
         self._setting_inheritance_manager = None
@@ -580,9 +585,12 @@ class CuraApplication(QtApplication):
     def updatePlatformActivity(self, node = None):
         count = 0
         scene_bounding_box = None
+        is_block_slicing_node = False
         for node in DepthFirstIterator(self.getController().getScene().getRoot()):
-            if type(node) is not SceneNode or not node.getMeshData():
+            if type(node) is not SceneNode or (not node.getMeshData() and not node.callDecoration("getLayerData")):
                 continue
+            if node.callDecoration("isBlockSlicing"):
+                is_block_slicing_node = True
 
             count += 1
             if not scene_bounding_box:
@@ -592,6 +600,10 @@ class CuraApplication(QtApplication):
                 if other_bb is not None:
                     scene_bounding_box = scene_bounding_box + node.getBoundingBox()
 
+        print_information = self.getPrintInformation()
+        if print_information:
+            print_information.setPreSliced(is_block_slicing_node)
+
         if not scene_bounding_box:
             scene_bounding_box = AxisAlignedBox.Null
 
@@ -712,7 +724,7 @@ class CuraApplication(QtApplication):
         for node in DepthFirstIterator(self.getController().getScene().getRoot()):
             if type(node) is not SceneNode:
                 continue
-            if not node.getMeshData() and not node.callDecoration("isGroup"):
+            if (not node.getMeshData() and not node.callDecoration("getLayerData")) and not node.callDecoration("isGroup"):
                 continue  # Node that doesnt have a mesh and is not a group.
             if node.getParent() and node.getParent().callDecoration("isGroup"):
                 continue  # Grouped nodes don't need resetting as their parent (the group) is resetted)
@@ -1007,3 +1019,78 @@ class CuraApplication(QtApplication):
     @pyqtSlot(str)
     def log(self, msg):
         Logger.log("d", msg)
+
+    @pyqtSlot(QUrl)
+    def readLocalFile(self, file):
+        if not file.isValid():
+            return
+
+        scene = self.getController().getScene()
+
+        for node in DepthFirstIterator(scene.getRoot()):
+            if node.callDecoration("isBlockSlicing"):
+                self.deleteAll()
+                break
+
+        f = file.toLocalFile()
+        extension = os.path.splitext(f)[1]
+        filename = os.path.basename(f)
+        if len(self._currently_loading_files) > 0:
+            # If a non-slicable file is already being loaded, we prevent loading of any further non-slicable files
+            if extension.lower() in self._non_sliceable_extensions:
+                message = Message(
+                    self._i18n_catalog.i18nc("@info:status",
+                                       "Only one G-code file can be loaded at a time. Skipped importing {0}",
+                                       filename))
+                message.show()
+                return
+            # If file being loaded is non-slicable file, then prevent loading of any other files
+            extension = os.path.splitext(self._currently_loading_files[0])[1]
+            if extension.lower() in self._non_sliceable_extensions:
+                message = Message(
+                    self._i18n_catalog.i18nc("@info:status",
+                                       "Can't open any other file if G-code is loading. Skipped importing {0}",
+                                       filename))
+                message.show()
+                return
+
+        self._currently_loading_files.append(f)
+        if extension in self._non_sliceable_extensions:
+            self.deleteAll()
+
+        job = ReadMeshJob(f)
+        job.finished.connect(self._readMeshFinished)
+        job.start()
+
+    def _readMeshFinished(self, job):
+        nodes = job.getResult()
+        filename = job.getFileName()
+        self._currently_loading_files.remove(filename)
+
+        for node in nodes:
+            node.setSelectable(True)
+            node.setName(os.path.basename(filename))
+
+            extension = os.path.splitext(filename)[1]
+            if extension.lower() in self._non_sliceable_extensions:
+                self.getController().setActiveView("LayerView")
+                view = self.getController().getActiveView()
+                view.resetLayerData()
+                view.setLayer(9999999)
+                view.calculateMaxLayers()
+
+                block_slicing_decorator = BlockSlicingDecorator()
+                node.addDecorator(block_slicing_decorator)
+            else:
+                sliceable_decorator = SliceableObjectDecorator()
+                node.addDecorator(sliceable_decorator)
+
+            scene = self.getController().getScene()
+
+            op = AddSceneNodeOperation(node, scene.getRoot())
+            op.push()
+
+            scene.sceneChanged.emit(node)
+
+    def addNonSliceableExtension(self, extension):
+        self._non_sliceable_extensions.append(extension)

cura/GCodeListDecorator.py

@@ -0,0 +1,13 @@
+from UM.Scene.SceneNodeDecorator import SceneNodeDecorator
+
+
+class GCodeListDecorator(SceneNodeDecorator):
+    def __init__(self):
+        super().__init__()
+        self._gcode_list = []
+
+    def getGCodeList(self):
+        return self._gcode_list
+
+    def setGCodeList(self, list):
+        self._gcode_list = list

cura/PrintInformation.py

@@ -13,6 +13,9 @@ import math
 import os.path
 import unicodedata
 
+from UM.i18n import i18nCatalog
+catalog = i18nCatalog("cura")
+
 ##  A class for processing and calculating minimum, current and maximum print time as well as managing the job name
 #
 #   This class contains all the logic relating to calculation and slicing for the
@@ -49,6 +52,8 @@ class PrintInformation(QObject):
         self._material_lengths = []
         self._material_weights = []
 
+        self._pre_sliced = False
+
         self._backend = Application.getInstance().getBackend()
         if self._backend:
             self._backend.printDurationMessage.connect(self._onPrintDurationMessage)
@@ -61,6 +66,16 @@ class PrintInformation(QObject):
 
     currentPrintTimeChanged = pyqtSignal()
 
+    preSlicedChanged = pyqtSignal()
+
+    @pyqtProperty(bool, notify=preSlicedChanged)
+    def preSliced(self):
+        return self._pre_sliced
+
+    def setPreSliced(self, pre_sliced):
+        self._pre_sliced = pre_sliced
+        self.preSlicedChanged.emit()
+
     @pyqtProperty(Duration, notify = currentPrintTimeChanged)
     def currentPrintTime(self):
         return self._current_print_time
@@ -122,7 +137,9 @@ class PrintInformation(QObject):
     def createJobName(self, base_name):
         base_name = self._stripAccents(base_name)
         self._setAbbreviatedMachineName()
-        if Preferences.getInstance().getValue("cura/jobname_prefix"):
+        if self._pre_sliced:
+            return catalog.i18nc("@label", "Pre-sliced file {0}", base_name)
+        elif Preferences.getInstance().getValue("cura/jobname_prefix"):
             return self._abbr_machine + "_" + base_name
         else:
             return base_name
@@ -150,4 +167,4 @@ class PrintInformation(QObject):
 
     ##  Utility method that strips accents from characters (eg: â -> a)
     def _stripAccents(self, str):
-       return ''.join(char for char in unicodedata.normalize('NFD', str) if unicodedata.category(char) != 'Mn')
+       return ''.join(char for char in unicodedata.normalize('NFD', str) if unicodedata.category(char) != 'Mn')

cura/SliceableObjectDecorator.py

@@ -0,0 +1,12 @@
+from UM.Scene.SceneNodeDecorator import SceneNodeDecorator
+
+
+class SliceableObjectDecorator(SceneNodeDecorator):
+    def __init__(self):
+        super().__init__()
+        
+    def isSliceable(self):
+        return True
+
+    def __deepcopy__(self, memo):
+        return type(self)()

plugins/3MFReader/ThreeMFReader.py

@@ -1,22 +1,22 @@
 # Copyright (c) 2015 Ultimaker B.V.
 # Cura is released under the terms of the AGPLv3 or higher.
 
-from UM.Mesh.MeshReader import MeshReader
-from UM.Mesh.MeshBuilder import MeshBuilder
+import os.path
+import zipfile
+
+from UM.Job import Job
 from UM.Logger import Logger
 from UM.Math.Matrix import Matrix
 from UM.Math.Vector import Vector
-from UM.Scene.SceneNode import SceneNode
+from UM.Mesh.MeshBuilder import MeshBuilder
+from UM.Mesh.MeshReader import MeshReader
 from UM.Scene.GroupDecorator import GroupDecorator
 import UM.Application
-from UM.Job import Job
 from cura.Settings.SettingOverrideDecorator import SettingOverrideDecorator
 from UM.Application import Application
 from cura.Settings.ExtruderManager import ExtruderManager
 from cura.QualityManager import QualityManager
-
-import os.path
-import zipfile
+from UM.Scene.SceneNode import SceneNode
 
 try:
     import xml.etree.cElementTree as ET
@@ -263,4 +263,4 @@ class ThreeMFReader(MeshReader):
             Logger.log("w", "Unrecognised unit %s used. Assuming mm instead", unit)
             scale = 1
 
-        return Vector(scale, scale, scale)
+        return Vector(scale, scale, scale)

plugins/CuraEngineBackend/CuraEngineBackend.py

@@ -12,6 +12,8 @@ from UM.PluginRegistry import PluginRegistry
 from UM.Resources import Resources
 from UM.Settings.Validator import ValidatorState #To find if a setting is in an error state. We can't slice then.
 from UM.Platform import Platform
+from UM.Scene.Iterator.DepthFirstIterator import DepthFirstIterator
+
 
 import cura.Settings
 
@@ -69,6 +71,8 @@ class CuraEngineBackend(Backend):
         self._scene = Application.getInstance().getController().getScene()
         self._scene.sceneChanged.connect(self._onSceneChanged)
 
+        self._pause_slicing = False
+
         # Workaround to disable layer view processing if layer view is not active.
         self._layer_view_active = False
         Application.getInstance().getController().activeViewChanged.connect(self._onActiveViewChanged)
@@ -150,6 +154,8 @@ class CuraEngineBackend(Backend):
     ##  Perform a slice of the scene.
     def slice(self):
         Logger.log("d", "Starting slice job...")
+        if self._pause_slicing:
+            return
         self._slice_start_time = time()
         if not self._enabled or not self._global_container_stack:  # We shouldn't be slicing.
             # try again in a short time
@@ -183,6 +189,17 @@ class CuraEngineBackend(Backend):
         self._start_slice_job.start()
         self._start_slice_job.finished.connect(self._onStartSliceCompleted)
 
+
+    def pauseSlicing(self):
+        self.close()
+        self._pause_slicing = True
+        self.backendStateChange.emit(BackendState.Disabled)
+
+    def continueSlicing(self):
+        if self._pause_slicing:
+            self._pause_slicing = False
+            self.backendStateChange.emit(BackendState.NotStarted)
+
     ##  Terminate the engine process.
     def _terminate(self):
         self._slicing = False
@@ -298,6 +315,19 @@ class CuraEngineBackend(Backend):
         if source is self._scene.getRoot():
             return
 
+        should_pause = False
+        for node in DepthFirstIterator(self._scene.getRoot()):
+            if node.callDecoration("isBlockSlicing"):
+                should_pause = True
+            gcode_list = node.callDecoration("getGCodeList")
+            if gcode_list is not None:
+                self._scene.gcode_list = gcode_list
+
+        if should_pause:
+            self.pauseSlicing()
+        else:
+            self.continueSlicing()
+
         if source.getMeshData() is None:
             return
 

plugins/GCodeReader/GCodeReader.py

@@ -0,0 +1,303 @@
+# Copyright (c) 2016 Aleph Objects, Inc.
+# Cura is released under the terms of the AGPLv3 or higher.
+
+from UM.Application import Application
+from UM.Logger import Logger
+from UM.Math.AxisAlignedBox import AxisAlignedBox
+from UM.Math.Vector import Vector
+from UM.Mesh.MeshReader import MeshReader
+from UM.Message import Message
+from UM.Scene.SceneNode import SceneNode
+from UM.i18n import i18nCatalog
+
+catalog = i18nCatalog("cura")
+
+
+from cura import LayerDataBuilder
+from cura import LayerDataDecorator
+from cura.LayerPolygon import LayerPolygon
+from cura.GCodeListDecorator import GCodeListDecorator
+
+import numpy
+import math
+import re
+from collections import namedtuple
+
+
+# Class for loading and parsing G-code files
+class GCodeReader(MeshReader):
+    def __init__(self):
+        super(GCodeReader, self).__init__()
+        self._supported_extensions = [".gcode", ".g"]
+        Application.getInstance().hideMessageSignal.connect(self._onHideMessage)
+        self._cancelled = False
+        self._message = None
+        self._clearValues()
+        self._scene_node = None
+        self._position = namedtuple('Position', ['x', 'y', 'z', 'e'])
+
+    def _clearValues(self):
+        self._extruder = 0
+        self._layer_type = LayerPolygon.Inset0Type
+        self._layer = 0
+        self._previous_z = 0
+        self._layer_data_builder = LayerDataBuilder.LayerDataBuilder()
+        self._center_is_zero = False
+
+    @staticmethod
+    def _getValue(line, code):
+        n = line.find(code)
+        if n < 0:
+            return None
+        n += len(code)
+        pattern = re.compile("[;\s]")
+        match = pattern.search(line, n)
+        m = match.start() if match is not None else -1
+        try:
+            if m < 0:
+                return line[n:]
+            return line[n:m]
+        except:
+            return None
+
+    def _getInt(self, line, code):
+        value = self._getValue(line, code)
+        try:
+            return int(value)
+        except:
+            return None
+
+    def _getFloat(self, line, code):
+        value = self._getValue(line, code)
+        try:
+            return float(value)
+        except:
+            return None
+
+    def _onHideMessage(self, message):
+        if message == self._message:
+            self._cancelled = True
+
+    @staticmethod
+    def _getNullBoundingBox():
+        return AxisAlignedBox(minimum=Vector(0, 0, 0), maximum=Vector(10, 10, 10))
+
+    def _createPolygon(self, current_z, path):
+        countvalid = 0
+        for point in path:
+            if point[3] > 0:
+                countvalid += 1
+        if countvalid < 2:
+            return False
+        try:
+            self._layer_data_builder.addLayer(self._layer)
+            self._layer_data_builder.setLayerHeight(self._layer, path[0][2])
+            self._layer_data_builder.setLayerThickness(self._layer, math.fabs(current_z - self._previous_z))
+            this_layer = self._layer_data_builder.getLayer(self._layer)
+        except ValueError:
+            return False
+        count = len(path)
+        line_types = numpy.empty((count - 1, 1), numpy.int32)
+        line_widths = numpy.empty((count - 1, 1), numpy.float32)
+        # TODO: need to calculate actual line width based on E values
+        line_widths[:, 0] = 0.4
+        points = numpy.empty((count, 3), numpy.float32)
+        i = 0
+        for point in path:
+            points[i, 0] = point[0]
+            points[i, 1] = point[2]
+            points[i, 2] = -point[1]
+            if i > 0:
+                line_types[i - 1] = point[3]
+                if point[3] in [LayerPolygon.MoveCombingType, LayerPolygon.MoveRetractionType]:
+                    line_widths[i - 1] = 0.2
+            i += 1
+
+        this_poly = LayerPolygon(self._layer_data_builder, self._extruder, line_types, points, line_widths)
+        this_poly.buildCache()
+
+        this_layer.polygons.append(this_poly)
+        return True
+
+    def _gCode0(self, position, params, path):
+        x, y, z, e = position
+        x = params.x if params.x is not None else x
+        y = params.y if params.y is not None else y
+        z_changed = False
+        if params.z is not None:
+            if z != params.z:
+                z_changed = True
+                self._previous_z = z
+            z = params.z
+        if params.e is not None:
+            if params.e > e[self._extruder]:
+                path.append([x, y, z, self._layer_type])  # extrusion
+            else:
+                path.append([x, y, z, LayerPolygon.MoveRetractionType])  # retraction
+            e[self._extruder] = params.e
+        else:
+            path.append([x, y, z, LayerPolygon.MoveCombingType])
+        if z_changed:
+            if not self._is_layers_in_file:
+                if len(path) > 1 and z > 0:
+                    if self._createPolygon(z, path):
+                        self._layer += 1
+                    path.clear()
+                else:
+                    path.clear()
+        return self._position(x, y, z, e)
+
+    def _gCode28(self, position, params, path):
+        return self._position(
+            params.x if params.x is not None else position.x,
+            params.y if params.y is not None else position.y,
+            0,
+            position.e)
+
+    def _gCode92(self, position, params, path):
+        if params.e is not None:
+            position.e[self._extruder] = params.e
+        return self._position(
+            params.x if params.x is not None else position.x,
+            params.y if params.y is not None else position.y,
+            params.z if params.z is not None else position.z,
+            position.e)
+
+    _gCode1 = _gCode0
+
+    def _processGCode(self, G, line, position, path):
+        func = getattr(self, "_gCode%s" % G, None)
+        x = self._getFloat(line, "X")
+        y = self._getFloat(line, "Y")
+        z = self._getFloat(line, "Z")
+        e = self._getFloat(line, "E")
+        if func is not None:
+            if (x is not None and x < 0) or (y is not None and y < 0):
+                self._center_is_zero = True
+            params = self._position(x, y, z, e)
+            return func(position, params, path)
+        return position
+
+    def _processTCode(self, T, line, position, path):
+        self._extruder = T
+        if self._extruder + 1 > len(position.e):
+            position.e.extend([0] * (self._extruder - len(position.e) + 1))
+        if not self._is_layers_in_file:
+            if len(path) > 1 and position[2] > 0:
+                if self._createPolygon(position[2], path):
+                    self._layer += 1
+                path.clear()
+            else:
+                path.clear()
+        return position
+
+    _type_keyword = ";TYPE:"
+    _layer_keyword = ";LAYER:"
+
+    def read(self, file_name):
+        Logger.log("d", "Preparing to load %s" % file_name)
+        self._cancelled = False
+
+        scene_node = SceneNode()
+        scene_node.getBoundingBox = self._getNullBoundingBox  # Manually set bounding box, because mesh doesn't have mesh data
+
+        glist = []
+        self._is_layers_in_file = False
+
+
+        Logger.log("d", "Opening file %s" % file_name)
+
+        with open(file_name, "r") as file:
+            file_lines = 0
+            current_line = 0
+            for line in file:
+                file_lines += 1
+                glist.append(line)
+                if not self._is_layers_in_file and line[:len(self._layer_keyword)] == self._layer_keyword:
+                    self._is_layers_in_file = True
+            file.seek(0)
+
+            file_step = max(math.floor(file_lines / 100), 1)
+
+            self._clearValues()
+
+            self._message = Message(catalog.i18nc("@info:status", "Parsing G-code"), lifetime=0)
+            self._message.setProgress(0)
+            self._message.show()
+
+            Logger.log("d", "Parsing %s" % file_name)
+
+            current_position = self._position(0, 0, 0, [0])
+            current_path = []
+
+            for line in file:
+                if self._cancelled:
+                    Logger.log("d", "Parsing %s cancelled" % file_name)
+                    return None
+                current_line += 1
+                if current_line % file_step == 0:
+                    self._message.setProgress(math.floor(current_line / file_lines * 100))
+                if len(line) == 0:
+                    continue
+                if line.find(self._type_keyword) == 0:
+                    type = line[len(self._type_keyword):].strip()
+                    if type == "WALL-INNER":
+                        self._layer_type = LayerPolygon.InsetXType
+                    elif type == "WALL-OUTER":
+                        self._layer_type = LayerPolygon.Inset0Type
+                    elif type == "SKIN":
+                        self._layer_type = LayerPolygon.SkinType
+                    elif type == "SKIRT":
+                        self._layer_type = LayerPolygon.SkirtType
+                    elif type == "SUPPORT":
+                        self._layer_type = LayerPolygon.SupportType
+                    elif type == "FILL":
+                        self._layer_type = LayerPolygon.InfillType
+                if self._is_layers_in_file and line[:len(self._layer_keyword)] == self._layer_keyword:
+                    try:
+                        layer_number = int(line[len(self._layer_keyword):])
+                        self._createPolygon(current_position[2], current_path)
+                        current_path.clear()
+                        self._layer = layer_number
+                    except:
+                        pass
+                if line[0] == ";":
+                    continue
+
+                G = self._getInt(line, "G")
+                if G is not None:
+                    current_position = self._processGCode(G, line, current_position, current_path)
+                T = self._getInt(line, "T")
+                if T is not None:
+                    current_position = self._processTCode(T, line, current_position, current_path)
+
+            if not self._is_layers_in_file and len(current_path) > 1 and current_position[2] > 0:
+                if self._createPolygon(current_position[2], current_path):
+                    self._layer += 1
+                current_path.clear()
+
+        layer_mesh = self._layer_data_builder.build()
+        decorator = LayerDataDecorator.LayerDataDecorator()
+        decorator.setLayerData(layer_mesh)
+        scene_node.addDecorator(decorator)
+
+        gcode_list_decorator = GCodeListDecorator()
+        gcode_list_decorator.setGCodeList(glist)
+        scene_node.addDecorator(gcode_list_decorator)
+
+        Logger.log("d", "Finished parsing %s" % file_name)
+        self._message.hide()
+
+        if self._layer == 0:
+            Logger.log("w", "File %s doesn't contain any valid layers" % file_name)
+
+        settings = Application.getInstance().getGlobalContainerStack()
+        machine_width = settings.getProperty("machine_width", "value")
+        machine_depth = settings.getProperty("machine_depth", "value")
+
+        if not self._center_is_zero:
+            scene_node.setPosition(Vector(-machine_width / 2, 0, machine_depth / 2))
+
+        Logger.log("d", "Loaded %s" % file_name)
+
+        return scene_node

plugins/GCodeReader/__init__.py

@@ -0,0 +1,33 @@
+# Copyright (c) 2016 Aleph Objects, Inc.
+# Cura is released under the terms of the AGPLv3 or higher.
+
+from . import GCodeReader
+
+from UM.i18n import i18nCatalog
+i18n_catalog = i18nCatalog("cura")
+
+def getMetaData():
+    return {
+        "plugin": {
+            "name": i18n_catalog.i18nc("@label", "G-code Reader"),
+            "author": "Victor Larchenko",
+            "version": "1.0",
+            "description": i18n_catalog.i18nc("@info:whatsthis", "Allows loading and displaying G-code files."),
+            "api": 3
+        },
+        "mesh_reader": [
+            {
+                "extension": "gcode",
+                "description": i18n_catalog.i18nc("@item:inlistbox", "G-code File")
+            },
+            {
+                "extension": "g",
+                "description": i18n_catalog.i18nc("@item:inlistbox", "G File")
+            }
+        ]
+    }
+
+def register(app):
+    app.addNonSliceableExtension(".gcode")
+    app.addNonSliceableExtension(".g")
+    return { "mesh_reader": GCodeReader.GCodeReader() }

plugins/LayerView/LayerPass.py

@@ -45,10 +45,11 @@ class LayerPass(RenderPass):
         tool_handle_batch = RenderBatch(self._tool_handle_shader, type = RenderBatch.RenderType.Overlay)
 
         for node in DepthFirstIterator(self._scene.getRoot()):
+
             if isinstance(node, ToolHandle):
                 tool_handle_batch.addItem(node.getWorldTransformation(), mesh = node.getSolidMesh())
 
-            elif isinstance(node, SceneNode) and node.getMeshData() and node.isVisible():
+            elif isinstance(node, SceneNode) and (node.getMeshData() or node.callDecoration("isBlockSlicing")) and node.isVisible():
                 layer_data = node.callDecoration("getLayerData")
                 if not layer_data:
                     continue

plugins/LayerView/LayerView.py

@@ -119,7 +119,7 @@ class LayerView(View):
                 continue
 
             if not node.render(renderer):
-                if node.getMeshData() and node.isVisible():
+                if (node.getMeshData()) and node.isVisible():
                     renderer.queueNode(node, transparent = True, shader = self._ghost_shader)
 
     def setLayer(self, value):

plugins/X3DReader/X3DReader.py

@@ -1,15 +1,17 @@
 # Contributed by Seva Alekseyev <sevaa@nih.gov> with National Institutes of Health, 2016
 # Cura is released under the terms of the AGPLv3 or higher.
 
-from UM.Mesh.MeshReader import MeshReader
-from UM.Mesh.MeshBuilder import MeshBuilder
+from math import pi, sin, cos, sqrt
+
+import numpy
+
+from UM.Job import Job
 from UM.Logger import Logger
 from UM.Math.Matrix import Matrix
 from UM.Math.Vector import Vector
+from UM.Mesh.MeshBuilder import MeshBuilder
+from UM.Mesh.MeshReader import MeshReader
 from UM.Scene.SceneNode import SceneNode
-from UM.Job import Job
-from math import pi, sin, cos, sqrt
-import numpy
 
 try:
     import xml.etree.cElementTree as ET

resources/qml/Cura.qml

@@ -269,16 +269,16 @@ UM.MainWindow
                     if(drop.urls.length > 0)
                     {
                         // Import models
+                        var imported_model = -1;
                         for(var i in drop.urls)
                         {
                             // There is no endsWith in this version of JS...
                             if ((drop.urls[i].length <= 12) || (drop.urls[i].substring(drop.urls[i].length-12) !== ".curaprofile")) {
                                 // Drop an object
-                                UM.MeshFileHandler.readLocalFile(drop.urls[i]);
-                                if (i == drop.urls.length - 1)
+                                Printer.readLocalFile(drop.urls[i]);
+                                if (imported_model == -1)
                                 {
-                                    var meshName = backgroundItem.getMeshName(drop.urls[i].toString());
-                                    backgroundItem.hasMesh(decodeURIComponent(meshName));
+                                    imported_model = i;
                                 }
                             }
                         }
@@ -297,6 +297,11 @@ UM.MainWindow
                             }
                             messageDialog.open()
                         }
+                        if (imported_model != -1)
+                        {
+                            var meshName = backgroundItem.getMeshName(drop.urls[imported_model].toString())
+                            backgroundItem.hasMesh(decodeURIComponent(meshName))
+                        }
                     }
                 }
             }
@@ -406,7 +411,8 @@ UM.MainWindow
                 iconSource: UM.Theme.getIcon("viewmode");
 
                 style: UM.Theme.styles.tool_button;
-                tooltip: '';
+                tooltip: "";
+                enabled: !PrintInformation.preSliced
                 menu: ViewMenu { }
             }
 
@@ -731,14 +737,11 @@ UM.MainWindow
 
             for(var i in fileUrls)
             {
-                UM.MeshFileHandler.readLocalFile(fileUrls[i])
-
-                if (i == fileUrls.length - 1)
-                {
-                    var meshName = backgroundItem.getMeshName(fileUrls.toString())
-                    backgroundItem.hasMesh(decodeURIComponent(meshName))
-                }
+                Printer.readLocalFile(fileUrls[i])
             }
+
+            var meshName = backgroundItem.getMeshName(fileUrls[0].toString())
+            backgroundItem.hasMesh(decodeURIComponent(meshName))
         }
     }
 

resources/qml/Menus/RecentFilesMenu.qml

@@ -26,7 +26,7 @@ Menu
                 return (index + 1) + ". " + path.slice(path.lastIndexOf("/") + 1);
             }
             onTriggered: {
-                UM.MeshFileHandler.readLocalFile(modelData);
+                Printer.readLocalFile(modelData);
                 var meshName = backgroundItem.getMeshName(modelData.toString())
                 backgroundItem.hasMesh(decodeURIComponent(meshName))
             }

resources/qml/Menus/ViewMenu.qml

@@ -11,6 +11,7 @@ Menu
 {
     title: catalog.i18nc("@title:menu menubar:toplevel", "&View");
     id: menu
+    enabled: !PrintInformation.preSliced
     Instantiator
     {
         model: UM.ViewModel { }

resources/qml/SaveButton.qml

@@ -34,6 +34,8 @@ Rectangle {
                 return catalog.i18nc("@label:PrintjobStatus %1 is target operation","Ready to %1").arg(UM.OutputDeviceManager.activeDeviceShortDescription);
             case 4:
                 return catalog.i18nc("@label:PrintjobStatus", "Unable to Slice");
+            case 5:
+                return catalog.i18nc("@label:PrintjobStatus", "Slicing unavailable");
             default:
                 return "";
         }
@@ -104,7 +106,7 @@ Rectangle {
             id: saveToButton
 
             tooltip: UM.OutputDeviceManager.activeDeviceDescription;
-            enabled: base.backendState == 3 && base.activity == true
+            enabled: (base.backendState == 3 || base.backendState == 5) && base.activity == true
             height: UM.Theme.getSize("save_button_save_to_button").height
 
             anchors.top: parent.top
@@ -179,7 +181,7 @@ Rectangle {
             anchors.rightMargin: UM.Theme.getSize("default_margin").width
             width: UM.Theme.getSize("save_button_save_to_button").height
             height: UM.Theme.getSize("save_button_save_to_button").height
-            enabled: base.backendState == 3 && base.activity == true
+            enabled: (base.backendState == 3 || base.backendState == 5) && base.activity == true
             visible: devicesModel.deviceCount > 1
 
 

resources/qml/Sidebar.qml

@@ -16,6 +16,7 @@ Rectangle
 
     property int currentModeIndex;
     property bool monitoringPrint: false
+    property bool hideSettings: PrintInformation.preSliced
     Connections
     {
         target: Printer
@@ -288,7 +289,7 @@ Rectangle
 
     Label {
         id: settingsModeLabel
-        text: catalog.i18nc("@label:listbox", "Print Setup");
+        text: !hideSettings ? catalog.i18nc("@label:listbox", "Print Setup") : catalog.i18nc("@label:listbox","Print Setup disabled\nG-code files cannot be modified");
         anchors.left: parent.left
         anchors.leftMargin: UM.Theme.getSize("default_margin").width;
         anchors.top: headerSeparator.bottom
@@ -308,7 +309,7 @@ Rectangle
         anchors.rightMargin: UM.Theme.getSize("default_margin").width
         anchors.top: headerSeparator.bottom
         anchors.topMargin: UM.Theme.getSize("default_margin").height
-        visible: !monitoringPrint
+        visible: !monitoringPrint && !hideSettings
         Component{
             id: wizardDelegate
             Button {
@@ -384,7 +385,7 @@ Rectangle
         height: settingsModeSelection.height
         width: visible ? height : 0
 
-        visible: !monitoringPrint && modesListModel.get(base.currentModeIndex) != undefined && modesListModel.get(base.currentModeIndex).showFilterButton
+        visible: !monitoringPrint && !hideSettings && modesListModel.get(base.currentModeIndex) != undefined && modesListModel.get(base.currentModeIndex).showFilterButton
         opacity: visible ? 1 : 0
 
         onClicked: sidebarContents.currentItem.toggleFilterField()
@@ -432,7 +433,7 @@ Rectangle
         anchors.topMargin: UM.Theme.getSize("default_margin").height
         anchors.left: base.left
         anchors.right: base.right
-        visible: !monitoringPrint
+        visible: !monitoringPrint && !hideSettings
 
         delegate: StackViewDelegate
         {