connected Row Corners
Computes the outer corners for the item at index in a horizontal (row) Connected UI list.
In a horizontal arrangement, only the first item has outer start-side corners (topStart and bottomStart) and only the last item has outer end-side corners (topEnd and bottomEnd).
Return
The ConnectedCorners describing which corners face the exterior.
Parameters
index
Zero-based position of the item within the row.
size
Total number of items in the row. Must be greater than zero.