wm.py 文件源码

def invoke(self, context, event):
        wm = context.window_manager

        data_path = self.data_path
        prop_string = self.prop_string

        # same as eval("bpy.ops." + data_path)
        op_mod_str, ob_id_str = data_path.split(".", 1)
        op = getattr(getattr(bpy.ops, op_mod_str), ob_id_str)
        del op_mod_str, ob_id_str

        try:
            op_rna = op.get_rna()
        except KeyError:
            self.report({'ERROR'}, "Operator not found: bpy.ops.%s" % data_path)
            return {'CANCELLED'}

        def draw_cb(self, context):
            layout = self.layout
            pie = layout.menu_pie()
            pie.operator_enum(data_path, prop_string)

        wm.popup_menu_pie(draw_func=draw_cb, title=op_rna.bl_rna.name, event=event)

        return {'FINISHED'}