Display units for more pset/qset props #3235

Now current project units displayed for area and volume properties too.
https://i.imgur.com/7dgl1pC.png
Also added support for imperial units symbols.

src/blenderbim/blenderbim/bim/module/pset/operator.py

@@ -144,8 +144,12 @@ class EnablePsetEditing(bpy.types.Operator):
         if prop_template.PrimaryMeasureType in (
             "IfcPositiveLengthMeasure",
             "IfcLengthMeasure",
-        ) or prop_template.TemplateType in ("Q_LENGTH",):
+        ) or prop_template.TemplateType == "Q_LENGTH":
             special_type = "LENGTH"
+        elif prop_template.PrimaryMeasureType == "IfcAreaMeasure" or prop_template.TemplateType == "Q_AREA":
+            special_type = "AREA"
+        elif prop_template.PrimaryMeasureType == "IfcVolumeMeasure" or prop_template.TemplateType == "Q_VOLUME":
+            special_type = "VOLUME"
         metadata.special_type = special_type
 
         if metadata.data_type == "string":

src/blenderbim/blenderbim/bim/module/pset/ui.py

@@ -49,7 +49,7 @@ def draw_single_property(prop, layout, copy_operator=None):
     layout.prop(
         prop.metadata,
         value_name,
-        text=prop.metadata.name,
+        text=prop.metadata.display_name,
     )
     if prop.metadata.is_uri:
         op = layout.operator("bim.select_uri_attribute", text="", icon="FILE_FOLDER")

src/blenderbim/blenderbim/bim/prop.py

@@ -233,9 +233,21 @@ def set_lenght_value(self, value):
     self.float_value = value / si_conversion
 
 
+def get_display_name(self):
+    name = self.name
+    if not self.special_type or self.special_type == "LENGTH":
+        return name
+
+    unit_type = f"{self.special_type}UNIT"
+    project_unit = ifcopenshell.util.unit.get_project_unit(tool.Ifc.get(), unit_type)
+    unit_symbol = ifcopenshell.util.unit.get_unit_symbol(project_unit)
+    return f"{name}, {unit_symbol}"
+
+
 class Attribute(PropertyGroup):
     tooltip = "`Right Click > IFC Description` to read the attribute description and online documentation"
     name: StringProperty(name="Name")
+    display_name: StringProperty(name="Display Name", get=get_display_name)
     description: StringProperty(name="Description")
     ifc_class: StringProperty(name="Ifc Class")
     data_type: StringProperty(name="Data Type")