align
The child's offset from the top left of space, for a child of extent size in a container laid out under orientation.
Return
the offset, applied without clamping.
Parameters
size
the child's own extent, which an alignment reads and never changes.
space
the extent offered, inside which the child is placed.
orientation
the container's reading order; a right-to-left one mirrors the horizontal half of the placement, so Alignment.TopStart resolves to the top right corner.