destroy the xdg_positioner object
set anchor rectangle anchor
set the anchor rectangle within the parent surface
set the adjustment to be done when constrained
set child surface gravity
set surface position offset
set parent configure this is a response to
Set the parent window geometry the compositor should use when
positioning the popup. The compositor may use this information to
determine the future state the popup should be constrained using. If
this doesn’t match the dimension of the parent the popup is eventually
positioned against, the behavior is undefined.
continuously reconstrain the surface
set the size of the to-be positioned rectangle