Transforms a focus direction to a focus hint.
This is a convenience function for actors that implement the Focusable interface, to pass the correct FocusHint to their children when calling accept_focus.
UP maps to FROM_BELOW , DOWN maps to FROM_ABOVE, LEFT maps to FROM_RIGHT, RIGHT maps to FROM_LEFT, NEXT maps to FIRST, PREVIOUS maps to LAST and anything else maps to PRIOR.
| direction |