If you name the functions reasonably, and the functions don't interact except through arguments and return values, you have absolutely gained something.

That's when you rotate the display to vertical orientation.

"big, hairy, complicated thing" is a code smell and you would consider doing something about it, before it becomes truly a monster. Breaking it up into its constituent parts may be the way to go, if only because my brain's CPU cache is about 8 bytes of faulty memory.