OptionalbottomAlternatively, set bottom distance (leave unset for no top scroll)
OptionaldistanceDistance from all sides in screen pixels
OptionalleftAlternatively, set left distance (leave unset for no top scroll)
OptionalradiusDistance from center of screen in screen pixels
OptionalrightAlternatively, set right distance (leave unset for no top scroll)
OptionaltopAlternatively, set top distance (leave unset for no top scroll)
Insets for mouse edges scrolling regions