alignment property
Describes where the widget should be positioned after applying scroll animation.
If alignment
is 0.0, the child must be positioned as close to the
leading edge of the viewport as possible.
If alignment
is 1.0, the child must be positioned as close to the
trailing edge of the viewport as possible.
If alignment
is 0.5, the child must be positioned as close to the
center of the viewport as possible.
This is only used if alignmentPolicy is ScrollPositionAlignmentPolicy.explicit
Implementation
final double alignment = 0.0;