Are the x/y positions of a window declared as 1-based? (in other words inclusive of the first pixel of the window), so that with x=1 and y =1 the window would fit in the left top corner without having a 1px gap before its left and top edges?
If that's the case would setting x/y to 0/0 be valid and allowed? Would that cause the window to hang out of the screen area by 1px?
The left top corner corresponds to 0/0 as x/y
UPDATE: Refer to this question on stackoverflow How do android screen coordinates work?