while movinig an object how do i keep it inbounds

[gr3yali3n]

if i add a variable for the image like so this does work, but i still have to manually figure out what positions are the limits and then enter those numbers,
the 680 for x and 326 for y. if my image is 720X400 give or take and the object is 60X60

def move(self,x,y):
       imgx,imgy = canvas.coords(self.id)
       print(imgx,imgy)
       x = max(-imgx, min(x , 680 -imgx ))
       y = max(-imgy, min(y, 326  -imgy ))

       self.x += x
       self.y += y

       canvas.move(self.id, x,y)