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# ***************************************************************************
# * *
# * Copyright (c) 2022 Yorik van Havre <yorik@uncreated.net> *
# * *
# * This file is part of FreeCAD. *
# * *
# * FreeCAD is free software: you can redistribute it and/or modify it *
# * under the terms of the GNU Lesser General Public License as *
# * published by the Free Software Foundation, either version 2.1 of the *
# * License, or (at your option) any later version. *
# * *
# * FreeCAD is distributed in the hope that it will be useful, but *
# * WITHOUT ANY WARRANTY; without even the implied warranty of *
# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
# * Lesser General Public License for more details. *
# * *
# * You should have received a copy of the GNU Lesser General Public *
# * License along with FreeCAD. If not, see *
# * <https://www.gnu.org/licenses/>. *
# * *
# ***************************************************************************
"""Document observer to act on documents containing NativeIFC objects"""
import FreeCAD
params = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/NativeIFC")
def add_observer():
"""Adds this observer to the running FreeCAD instance"""
FreeCAD.BIMobserver = ifc_observer()
FreeCAD.addDocumentObserver(FreeCAD.BIMobserver)
def remove_observer():
"""Removes this observer if present"""
if hasattr(FreeCAD, "BIMobserver"):
FreeCAD.removeDocumentObserver(FreeCAD.BIMobserver)
del FreeCAD.BIMobserver
class ifc_observer:
"""A general document observer that handles IFC objects"""
def __init__(self):
# if there is a document open when the observer starts,
# check it
if FreeCAD.ActiveDocument:
self.slotActivateDocument(FreeCAD.ActiveDocument)
def slotStartSaveDocument(self, doc, value):
"""Save all IFC documents in this doc"""
from PySide import QtCore # lazy loading
self.docname = doc.Name
# delay execution to not get caught under the wait sursor
# that occurs when the saveAs file dialog is shown
# TODO find a more solid way
QtCore.QTimer.singleShot(100, self.save)
def slotDeletedObject(self, obj):
"""Deletes the corresponding object in the IFC document"""
from . import ifc_tools # lazy loading
proj = ifc_tools.get_project(obj)
if not proj:
return
if not hasattr(obj, "Proxy"):
return
if getattr(obj.Proxy, "nodelete", False):
return
ifc_tools.remove_ifc_element(obj)
def slotChangedDocument(self, doc, prop):
"""Watch document IFC properties"""
# only look at locked IFC documents
if "IfcFilePath" not in doc.PropertiesList:
return
from . import ifc_tools # lazy import
if prop == "Schema":
schema = doc.Schema
ifcfile = ifc_tools.get_ifcfile(doc)
if ifcfile:
if schema != ifcfile.wrapped_data.schema_name():
# TODO display warming
ifcfile, migration_table = ifc_tools.migrate_schema(ifcfile, schema)
doc.Proxy.ifcfile = ifcfile
# migrate children
for old_id, new_id in migration_table.items():
child = [o for o in doc.Objects if getattr(o, "StepId", None) == old_id]
if len(child) == 1:
child[0].StepId = new_id
elif prop == "Label":
ifcfile = ifc_tools.get_ifcfile(doc)
project = ifc_tools.get_ifc_element(doc)
ifc_tools.set_attribute(ifcfile, project, "Name", doc.Label)
def slotCreatedObject(self, obj):
"""If this is an IFC document, turn the object into IFC"""
doc = getattr(obj, "Document", None)
if doc:
if hasattr(doc, "IfcFilePath"):
from PySide import QtCore # lazy loading
self.objname = obj.Name
self.docname = obj.Document.Name
# delaying to make sure all other properties are set
QtCore.QTimer.singleShot(100, self.convert)
def slotActivateDocument(self, doc):
"""Check if we need to lock"""
from . import ifc_status
ifc_status.on_activate()
def slotRemoveDynamicProperty(self, obj, prop):
from . import ifc_psets
ifc_psets.remove_property(obj, prop)
# implementation methods
def fit_all(self):
"""Fits the view"""
if FreeCAD.GuiUp:
import FreeCADGui
FreeCADGui.SendMsgToActiveView("ViewFit")
def save(self):
"""Saves all IFC documents contained in self.docname Document"""
if not hasattr(self, "docname"):
return
if self.docname not in FreeCAD.listDocuments():
return
doc = FreeCAD.getDocument(self.docname)
del self.docname
projects = []
if hasattr(doc, "IfcFilePath") and hasattr(doc, "Modified"):
if doc.Modified:
projects.append(doc)
else:
for obj in doc.findObjects(Type="Part::FeaturePython"):
if hasattr(obj, "IfcFilePath") and hasattr(obj, "Modified"):
if obj.Modified:
projects.append(obj)
if projects:
from . import ifc_tools # lazy loading
from . import ifc_viewproviders
ask = params.GetBool("AskBeforeSaving", True)
if ask and FreeCAD.GuiUp:
import Arch_rc
import FreeCADGui
dlg = FreeCADGui.PySideUic.loadUi(":/ui/dialogExport.ui")
result = dlg.exec_()
if not result:
return
ask = dlg.checkAskBeforeSaving.isChecked()
params.SetBool("AskBeforeSaving", ask)
for project in projects:
if getattr(project.Proxy, "ifcfile", None):
if project.IfcFilePath:
ifc_tools.save(project)
else:
ifc_viewproviders.get_filepath(project)
ifc_tools.save(project)
def convert(self):
"""Converts an object to IFC"""
if not hasattr(self, "objname") or not hasattr(self, "docname"):
return
if self.docname not in FreeCAD.listDocuments():
return
doc = FreeCAD.getDocument(self.docname)
if not doc:
return
obj = doc.getObject(self.objname)
if not obj:
return
if "StepId" in obj.PropertiesList:
return
del self.docname
del self.objname
if (
obj.isDerivedFrom("Part::Feature")
or "IfcType" in obj.PropertiesList
or "CreateSpreadsheet" in obj.PropertiesList
):
FreeCAD.Console.PrintLog("Converting " + obj.Label + " to IFC\n")
from . import ifc_geometry # lazy loading
from . import ifc_tools # lazy loading
newobj = ifc_tools.aggregate(obj, doc)
ifc_geometry.add_geom_properties(newobj)
doc.recompute()
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