Cura/cura/CuraApplication.py

# Copyright (c) 2015 Ultimaker B.V.
# Cura is released under the terms of the AGPLv3 or higher.

from UM.Qt.QtApplication import QtApplication
from UM.Scene.SceneNode import SceneNode
from UM.Scene.Camera import Camera
from UM.Scene.Platform import Platform
from UM.Math.Vector import Vector
from UM.Math.Matrix import Matrix
from UM.Math.Quaternion import Quaternion
from UM.Resources import Resources
from UM.Scene.ToolHandle import ToolHandle
from UM.Scene.Iterator.DepthFirstIterator import DepthFirstIterator
from UM.Mesh.WriteMeshJob import WriteMeshJob
from UM.Mesh.ReadMeshJob import ReadMeshJob
from UM.Logger import Logger
from UM.Preferences import Preferences
from UM.Message import Message
from UM.PluginRegistry import PluginRegistry
from UM.JobQueue import JobQueue
from UM.Math.Polygon import Polygon

from UM.Scene.BoxRenderer import BoxRenderer
from UM.Scene.Selection import Selection
from UM.Scene.GroupDecorator import GroupDecorator

from UM.Operations.AddSceneNodeOperation import AddSceneNodeOperation
from UM.Operations.RemoveSceneNodeOperation import RemoveSceneNodeOperation
from UM.Operations.GroupedOperation import GroupedOperation
from UM.Operations.SetTransformOperation import SetTransformOperation

from UM.i18n import i18nCatalog

from . import PlatformPhysics
from . import BuildVolume
from . import CameraAnimation
from . import PrintInformation
from . import CuraActions
from . import MultiMaterialDecorator

from PyQt5.QtCore import pyqtSlot, QUrl, Qt, pyqtSignal, pyqtProperty
from PyQt5.QtGui import QColor, QIcon

import platform
import sys
import os
import os.path
import configparser
import numpy
numpy.seterr(all="ignore")

class CuraApplication(QtApplication):
    def __init__(self):
        Resources.addResourcePath(os.path.join(QtApplication.getInstallPrefix(), "share", "cura"))
        if not hasattr(sys, "frozen"):
            Resources.addResourcePath(os.path.join(os.path.abspath(os.path.dirname(__file__)), ".."))

        super().__init__(name = "cura", version = "master")

        self.setWindowIcon(QIcon(Resources.getPath(Resources.ImagesLocation, "cura-icon.png")))

        self.setRequiredPlugins([
            "CuraEngineBackend",
            "MeshView",
            "LayerView",
            "STLReader",
            "SelectionTool",
            "CameraTool",
            "GCodeWriter",
            "LocalFileOutputDevice"
        ])
        self._physics = None
        self._volume = None
        self._platform = None
        self._output_devices = {}
        self._print_information = None
        self._i18n_catalog = None
        self._previous_active_tool = None
        self._platform_activity = False

        self.activeMachineChanged.connect(self._onActiveMachineChanged)

        Preferences.getInstance().addPreference("cura/active_machine", "")
        Preferences.getInstance().addPreference("cura/active_mode", "simple")
        Preferences.getInstance().addPreference("cura/recent_files", "")
        Preferences.getInstance().addPreference("cura/categories_expanded", "")

        JobQueue.getInstance().jobFinished.connect(self._onJobFinished)

        self._recent_files = []
        files = Preferences.getInstance().getValue("cura/recent_files").split(";")
        for f in files:
            if not os.path.isfile(f):
                continue

            self._recent_files.append(QUrl.fromLocalFile(f))
    
    ##  Handle loading of all plugin types (and the backend explicitly)
    #   \sa PluginRegistery
    def _loadPlugins(self):
        self._plugin_registry.addPluginLocation(os.path.join(QtApplication.getInstallPrefix(), "lib", "cura"))
        if not hasattr(sys, "frozen"):
            self._plugin_registry.addPluginLocation(os.path.join(os.path.abspath(os.path.dirname(__file__)), "..", "plugins"))
            self._plugin_registry.loadPlugin("ConsoleLogger")

        self._plugin_registry.loadPlugins()

        if self.getBackend() == None:
            raise RuntimeError("Could not load the backend plugin!")

    def addCommandLineOptions(self, parser):
        super().addCommandLineOptions(parser)
        parser.add_argument("file", nargs="*", help="Files to load after starting the application.")

    def run(self):
        self._i18n_catalog = i18nCatalog("cura");

        self.showSplashMessage(self._i18n_catalog.i18nc("Splash screen message", "Setting up scene..."))

        controller = self.getController()

        controller.setActiveView("MeshView")
        controller.setCameraTool("CameraTool")
        controller.setSelectionTool("SelectionTool")

        t = controller.getTool("TranslateTool")
        if t:
            t.setEnabledAxis([ToolHandle.XAxis, ToolHandle.ZAxis])

        Selection.selectionChanged.connect(self.onSelectionChanged)

        root = controller.getScene().getRoot()
        self._platform = Platform(root)

        self._volume = BuildVolume.BuildVolume(root)

        self.getRenderer().setLightPosition(Vector(0, 150, 0))
        self.getRenderer().setBackgroundColor(QColor(245, 245, 245))

        self._physics = PlatformPhysics.PlatformPhysics(controller, self._volume)

        camera = Camera("3d", root)
        camera.setPosition(Vector(-150, 150, 300))
        camera.setPerspective(True)
        camera.lookAt(Vector(0, 0, 0))

        self._camera_animation = CameraAnimation.CameraAnimation()
        self._camera_animation.setCameraTool(self.getController().getTool("CameraTool"))

        controller.getScene().setActiveCamera("3d")

        self.showSplashMessage(self._i18n_catalog.i18nc("Splash screen message", "Loading interface..."))

        self.setMainQml(Resources.getPath(Resources.QmlFilesLocation, "Cura.qml"))
        self.initializeEngine()

        if self.getMachines():
            active_machine_pref = Preferences.getInstance().getValue("cura/active_machine")
            if active_machine_pref:
                for machine in self.getMachines():
                    if machine.getName() == active_machine_pref:
                        self.setActiveMachine(machine)

            if not self.getActiveMachine():
                self.setActiveMachine(self.getMachines()[0])
        else:
            self.requestAddPrinter.emit()

        if self._engine.rootObjects:
            self.closeSplash()

            for file in self.getCommandLineOption("file", []):
                job = ReadMeshJob(os.path.abspath(file))
                job.finished.connect(self._onFileLoaded)
                job.start()

            self.exec_()

    def registerObjects(self, engine):
        engine.rootContext().setContextProperty("Printer", self)
        self._print_information = PrintInformation.PrintInformation()
        engine.rootContext().setContextProperty("PrintInformation", self._print_information)
        self._cura_actions = CuraActions.CuraActions(self)
        engine.rootContext().setContextProperty("CuraActions", self._cura_actions)

    def onSelectionChanged(self):
        if Selection.hasSelection():
            if not self.getController().getActiveTool():
                if self._previous_active_tool:
                    self.getController().setActiveTool(self._previous_active_tool)
                    self._previous_active_tool = None
                else:
                    self.getController().setActiveTool("TranslateTool")

            self._camera_animation.setStart(self.getController().getTool("CameraTool").getOrigin())
            self._camera_animation.setTarget(Selection.getSelectedObject(0).getWorldPosition())
            self._camera_animation.start()
        else:
            if self.getController().getActiveTool():
                self._previous_active_tool = self.getController().getActiveTool().getPluginId()
                self.getController().setActiveTool(None)
            else:
                self._previous_active_tool = None

    requestAddPrinter = pyqtSignal()
    activityChanged = pyqtSignal()

    @pyqtProperty(bool, notify = activityChanged)
    def getPlatformActivity(self):
        return self._platform_activity

    @pyqtSlot(bool)
    def setPlatformActivity(self, activity):
        ##Sets the _platform_activity variable on true or false depending on whether there is a mesh on the platform
        if activity == True:
            self._platform_activity = activity
        elif activity == False:
            nodes = []
            for node in DepthFirstIterator(self.getController().getScene().getRoot()):
                if type(node) is not SceneNode or not node.getMeshData():
                    continue
                nodes.append(node)
            i = 0
            for node in nodes:
                if not node.getMeshData():
                    continue
                i += 1
            if i <= 1: ## i == 0 when the meshes are removed using the deleteAll function; i == 1 when the last remaining mesh is removed using the deleteObject function
                self._platform_activity = activity
        self.activityChanged.emit()

    ##  Remove an object from the scene
    @pyqtSlot("quint64")
    def deleteObject(self, object_id):
        object = self.getController().getScene().findObject(object_id)

        if not object and object_id != 0: #Workaround for tool handles overlapping the selected object
            object = Selection.getSelectedObject(0)
        
        if object:
            if object.getParent():
                group_node = object.getParent()
                if not group_node.callDecoration("isGroup"):
                    op = RemoveSceneNodeOperation(object)
                else:
                    while group_node.getParent().callDecoration("isGroup"):
                        group_node = group_node.getParent()
                    op = RemoveSceneNodeOperation(group_node)
            op.push()
            self.setPlatformActivity(False)
    
    ##  Create a number of copies of existing object.
    @pyqtSlot("quint64", int)
    def multiplyObject(self, object_id, count):
        node = self.getController().getScene().findObject(object_id)

        if not node and object_id != 0: #Workaround for tool handles overlapping the selected object
            node = Selection.getSelectedObject(0)

        if node:
            op = GroupedOperation()
            for i in range(count):
                new_node = SceneNode()
                new_node.setMeshData(node.getMeshData())
                new_node.setScale(node.getScale())
                new_node.translate(Vector((i + 1) * node.getBoundingBox().width, 0, 0))
                new_node.setSelectable(True)
                op.addOperation(AddSceneNodeOperation(new_node, node.getParent()))
            op.push()
    
    ##  Center object on platform.
    @pyqtSlot("quint64")
    def centerObject(self, object_id):
        node = self.getController().getScene().findObject(object_id)

        if not node and object_id != 0: #Workaround for tool handles overlapping the selected object
            node = Selection.getSelectedObject(0)

        if node:
            op = SetTransformOperation(node, Vector())
            op.push()
    
    ##  Delete all mesh data on the scene.
    @pyqtSlot()
    def deleteAll(self):
        nodes = []
        for node in DepthFirstIterator(self.getController().getScene().getRoot()):
            if type(node) is not SceneNode or not node.getMeshData():
                continue
            nodes.append(node)
        if nodes:
            op = GroupedOperation()

            for node in nodes:
                op.addOperation(RemoveSceneNodeOperation(node))

            op.push()
        self.setPlatformActivity(False)
    
    ## Reset all translation on nodes with mesh data. 
    @pyqtSlot()
    def resetAllTranslation(self):
        nodes = []
        for node in DepthFirstIterator(self.getController().getScene().getRoot()):
            if type(node) is not SceneNode or not node.getMeshData():
                continue
            nodes.append(node)

        if nodes:
            op = GroupedOperation()

            for node in nodes:
                op.addOperation(SetTransformOperation(node, Vector()))

            op.push()
    
    ## Reset all transformations on nodes with mesh data. 
    @pyqtSlot()
    def resetAll(self):
        nodes = []
        for node in DepthFirstIterator(self.getController().getScene().getRoot()):
            if type(node) is not SceneNode or not node.getMeshData():
                continue
            nodes.append(node)

        if nodes:
            op = GroupedOperation()

            for node in nodes:
                op.addOperation(SetTransformOperation(node, Vector(), Quaternion(), Vector(1, 1, 1)))

            op.push()
            
    ##  Reload all mesh data on the screen from file.
    @pyqtSlot()
    def reloadAll(self):
        nodes = []
        for node in DepthFirstIterator(self.getController().getScene().getRoot()):
            if type(node) is not SceneNode or not node.getMeshData():
                continue

            nodes.append(node)

        if not nodes:
            return

        for node in nodes:
            if not node.getMeshData():
                continue

            file_name = node.getMeshData().getFileName()
            if file_name:
                job = ReadMeshJob(file_name)
                job._node = node
                job.finished.connect(self._reloadMeshFinished)
                job.start()
    
    ##  Get logging data of the backend engine
    #   \returns \type{string} Logging data
    @pyqtSlot(result=str)
    def getEngineLog(self):
        log = ""

        for entry in self.getBackend().getLog():
            log += entry.decode()

        return log

    recentFilesChanged = pyqtSignal()
    @pyqtProperty("QVariantList", notify = recentFilesChanged)
    def recentFiles(self):
        return self._recent_files

    @pyqtSlot("QStringList")
    def setExpandedCategories(self, categories):
        categories = list(set(categories))
        categories.sort()
        joined = ";".join(categories)
        if joined != Preferences.getInstance().getValue("cura/categories_expanded"):
            Preferences.getInstance().setValue("cura/categories_expanded", joined)
            self.expandedCategoriesChanged.emit()

    expandedCategoriesChanged = pyqtSignal()
    @pyqtProperty("QStringList", notify = expandedCategoriesChanged)
    def expandedCategories(self):
        return Preferences.getInstance().getValue("cura/categories_expanded").split(";")

    @pyqtSlot(str, result = "QVariant")
    def getSettingValue(self, key):
        if not self.getActiveMachine():
            return None

        return self.getActiveMachine().getSettingValueByKey(key)
    
    ##  Change setting by key value pair
    @pyqtSlot(str, "QVariant")
    def setSettingValue(self, key, value):
        if not self.getActiveMachine():
            return

        self.getActiveMachine().setSettingValueByKey(key, value)
        
    @pyqtSlot()
    def mergeSelected(self):
        self.groupSelected()
        try:
            group_node = Selection.getAllSelectedObjects()[0]
        except Exception as e:
            return
        multi_material_decorator = MultiMaterialDecorator.MultiMaterialDecorator()
        group_node.addDecorator(multi_material_decorator)
        # Reset the position of each node
        for node in group_node.getChildren():
            new_position = node.getMeshData().getCenterPosition()
            new_position.setY(0)
            node.setPosition(new_position)
        
        # Use the previously found center of the group bounding box as the new location of the group
        group_node.setPosition(group_node.getBoundingBox().center)
    
    @pyqtSlot()
    def groupSelected(self):
        group_node = SceneNode()
        group_decorator = GroupDecorator()
        group_node.addDecorator(group_decorator)
        group_node.setParent(self.getController().getScene().getRoot())
        
        for node in Selection.getAllSelectedObjects():
            node.setParent(group_node)
        
        for node in group_node.getChildren():
            Selection.remove(node)
        
        Selection.add(group_node)
    
    @pyqtSlot()
    def ungroupSelected(self):
        ungrouped_nodes = []
        selected_objects = Selection.getAllSelectedObjects()[:] #clone the list
        for node in selected_objects:
            if node.callDecoration("isGroup" ):
                children_to_move = []
                for child in node.getChildren():
                    if type(child) is SceneNode:
                        children_to_move.append(child)
                       
                for child in children_to_move:
                    child.setParent(node.getParent())
                    Selection.add(child)
                    child.callDecoration("setConvexHull",None)
                node.setParent(None)
                ungrouped_nodes.append(node)
        for node in ungrouped_nodes:
            Selection.remove(node)

    def _onActiveMachineChanged(self):
        machine = self.getActiveMachine()
        if machine:
            Preferences.getInstance().setValue("cura/active_machine", machine.getName())

            self._volume.setWidth(machine.getSettingValueByKey("machine_width"))
            self._volume.setHeight(machine.getSettingValueByKey("machine_height"))
            self._volume.setDepth(machine.getSettingValueByKey("machine_depth"))

            disallowed_areas = machine.getSettingValueByKey("machine_disallowed_areas")
            areas = []
            if disallowed_areas:
                for area in disallowed_areas:
                    areas.append(Polygon(numpy.array(area, numpy.float32)))

            self._volume.setDisallowedAreas(areas)

            self._volume.rebuild()

            offset = machine.getSettingValueByKey("machine_platform_offset")
            if offset:
                self._platform.setPosition(Vector(offset[0], offset[1], offset[2]))
            else:
                self._platform.setPosition(Vector(0.0, 0.0, 0.0))

    def _onFileLoaded(self, job):
        mesh = job.getResult()
        if mesh != None:
            node = SceneNode()

            node.setSelectable(True)
            node.setMeshData(mesh)
            node.setName(os.path.basename(job.getFileName()))

            op = AddSceneNodeOperation(node, self.getController().getScene().getRoot())
            op.push()

    def _onJobFinished(self, job):
        if type(job) is not ReadMeshJob or not job.getResult():
            return

        f = QUrl.fromLocalFile(job.getFileName())
        if f in self._recent_files:
            self._recent_files.remove(f)

        self._recent_files.insert(0, f)
        if len(self._recent_files) > 10:
            del self._recent_files[10]

        pref = ""
        for path in self._recent_files:
            pref += path.toLocalFile() + ";"

        Preferences.getInstance().setValue("cura/recent_files", pref)
        self.recentFilesChanged.emit()

    def _reloadMeshFinished(self, job):
        job._node.setMeshData(job.getResult())