I have 24" canvas roll.

I set my paper width to 24" and let QImage sort out the length.

I use a 30x20" photo with a 0.9" stretch wrap border. Makes it 31.8x21.8"

QImage is deciding that it need a further white 1" white wrap around this and is shrinking the image down to fit. Or going over the size.

How do I remove the white border?