bpy_types.py 文件源码

def draw_preset(self, context):
        """
        Define these on the subclass:
        - preset_operator (string)
        - preset_subdir (string)

        Optionally:
        - preset_extensions (set of strings)
        - preset_operator_defaults (dict of keyword args)
        """
        import bpy
        ext_valid = getattr(self, "preset_extensions", {".py", ".xml"})
        props_default = getattr(self, "preset_operator_defaults", None)
        self.path_menu(bpy.utils.preset_paths(self.preset_subdir),
                       self.preset_operator,
                       props_default=props_default,
                       filter_ext=lambda ext: ext.lower() in ext_valid)