hover method
Create a PointerHoverEvent to the given location.
By default, the time stamp on the event is Duration.zero. You can give a
specific time stamp by passing the timeStamp
argument.
isDown must be false, since hover events can't be sent when the pointer is up.
Implementation
PointerHoverEvent hover(
Offset newLocation, {
Duration timeStamp = Duration.zero,
}) {
assert(
!isDown,
'Hover events can only be generated when the pointer is up. To '
'simulate movement when the pointer is down, use move() instead.');
final Offset delta = location != null ? newLocation - location! : Offset.zero;
_location = newLocation;
return PointerHoverEvent(
timeStamp: timeStamp,
kind: kind,
device: _device,
pointer: pointer,
position: newLocation,
delta: delta,
);
}