GUI: Don't enforce full redraw upon closing tool tip #4954
Merged
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Follow-up of #4953 -- this makes tool tips noticeably faster as even a three letter tooltip would require a complete clearOverlay() & grabOverlay() & build the dialog stack.
This way it redraws only its parent dialog (dialog is key here; not parent widget).
One day I or perhaps someone else find the courage to implement a proper window manager into ScummVM, that way
kRedrawCloseDialogwould restore the underlying widget(s) (it is the "s" which makes this quite a complex change).