He punched the glass door?!?

So. My husband made a strawberry cake,got angry with it sticking to the pan and decided it would be a good idea to pound the door as punishment.

He hit the plate,tempered-glass door.

Crap.

So,instead of replacing the thing (which isn’t the best thing in the world to have in a house full of wood floors and linolieum with my paranoid instincts,anyway. And a great dane) we’re going to go the way of a pair of doors that open out into the room beyond it. Does anyone have any idea how I’d go about doing that? Obviously a lot of measuring is involved. If anyone could help me out here,I’d -really- appreciate it. =)