Side of start loading in FillingLoading type
It can be Alignment.centerRight, Alignment.centerLeft, Alignment.topCenter or etc.
The default value is Alignment.centerRight.
Side of end loading in FillingLoading type
It can be Alignment.centerRight, Alignment.centerLeft, Alignment.topCenter or etc.
The default value is Alignment.centerLeft.
after loading complete, if this value is true, it will reset the loading and enable it again
the false value, keep the loading completed, and not allow to start again
the default value is false
after longPressUp, if this value is true, it will reverse the loading in the path that it is passed
if this value is false, the loading will stop suddenly
the default value is true