blur method
Adds a BlurEffect that animates a blur on the target between
the specified begin
and end
blur radiuses (via ImageFiltered).
Implementation
T blur({
Duration? delay,
Duration? duration,
Curve? curve,
Offset? begin,
Offset? end,
}) =>
addEffect(BlurEffect(
delay: delay,
duration: duration,
curve: curve,
begin: begin,
end: end,
));