Arch: IFC import, add pref to view fit while importing

src/Mod/Arch/Resources/ui/preferences-ifc.ui

@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>456</width>
-    <height>699</height>
+    <height>728</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -358,6 +358,26 @@
         </item>
        </layout>
       </item>
+      <item>
+       <layout class="QHBoxLayout" name="horizontalLayout_20">
+        <item>
+         <widget class="Gui::PrefCheckBox" name="checkBox_14">
+          <property name="toolTip">
+           <string>Fit view during import on the imported objects. This will slow down the import, but one can watch the import.</string>
+          </property>
+          <property name="text">
+           <string>Fit view while importing</string>
+          </property>
+          <property name="prefEntry" stdset="0">
+           <cstring>ifcFitViewOnImport</cstring>
+          </property>
+          <property name="prefPath" stdset="0">
+           <cstring>Mod/Arch</cstring>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </item>
      </layout>
     </widget>
    </item>

src/Mod/Arch/importIFC.py

@@ -139,7 +139,7 @@ def getPreferences():
     global ROOT_ELEMENT, GET_EXTRUSIONS, MERGE_MATERIALS
     global MERGE_MODE_ARCH, MERGE_MODE_STRUCT, CREATE_CLONES
     global FORCE_BREP, IMPORT_PROPERTIES, STORE_UID, SERIALIZE
-    global SPLIT_LAYERS, EXPORT_2D, FULL_PARAMETRIC
+    global SPLIT_LAYERS, EXPORT_2D, FULL_PARAMETRIC, FITVIEW_ONIMPORT
     p = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Arch")
     if FreeCAD.GuiUp and p.GetBool("ifcShowDialog",False):
         import FreeCADGui
@@ -166,6 +166,7 @@ def getPreferences():
     SPLIT_LAYERS = p.GetBool("ifcSplitLayers",False)
     EXPORT_2D = p.GetBool("ifcExport2D",True)
     FULL_PARAMETRIC = p.GetBool("IfcExportFreeCADProperties",False)
+    FITVIEW_ONIMPORT = p.GetBool("ifcFitViewOnImport",False)
 
 
 def explore(filename=None):
@@ -381,6 +382,7 @@ def insert(filename,docname,skip=[],only=[],root=None):
     openings = ifcfile.by_type("IfcOpeningElement")
     annotations = ifcfile.by_type("IfcAnnotation")
     materials = ifcfile.by_type("IfcMaterial")
+    overallboundbox = FreeCAD.BoundBox()
 
     if DEBUG: print("Building relationships table...",end="")
 
@@ -473,6 +475,10 @@ def insert(filename,docname,skip=[],only=[],root=None):
     progressbar.start("Importing IFC objects...",len(products))
     if DEBUG: print("Processing objects...")
 
+    if FITVIEW_ONIMPORT and FreeCAD.GuiUp:
+        import FreeCADGui
+        FreeCADGui.ActiveDocument.activeView().viewAxonometric()
+
     # products
     for product in products:
         
@@ -563,6 +569,14 @@ def insert(filename,docname,skip=[],only=[],root=None):
 
             shape.scale(1000.0) # IfcOpenShell always outputs in meters
 
+            if FITVIEW_ONIMPORT and FreeCAD.GuiUp:
+                try:
+                    if not overallboundbox.isInside(shape.BoundBox):
+                        FreeCADGui.SendMsgToActiveView("ViewFit")
+                    overallboundbox.add(shape.BoundBox)
+                except:
+                    pass
+
             if not shape.isNull():
                 if (MERGE_MODE_ARCH > 0 and archobj) or structobj:
                     if ptype == "IfcSpace": # do not add spaces to compounds