Screen rotates back to normal when placed flat on desk

[dalel487]

Thanks for this project. Been really useful. I'm also new to GitHub so apologise if I'm posting this in the wrong place.

The only issue I had with the programme was that

• I'd rotate the screen to portrait
• put the laptop flat on the desk or at a not so steep angle
• Because rotation_changed sets the state to 0/normal at the start of each call, the screen gets set back to normal mode. Annoying if using a pen.

To fix this, I'd suggest changing int state to static int state at the start of rotation_changed()

Thanks!