The History of the HUD
An important note: You really shouldn’t use private methods. Especially since it’s not necessary for this: check out HMBlkAppKit.
The first time I saw the HUD, I was really annoyed. It first appeared in iPhoto ‘05 as an Adjustments window. It was most primitive in this app, having few gradients or highlights about. I didn’t really understand what it was for or why Apple had added it.
Then I saw the HUD in Motion. It had been refined dramatically—it was clearly using a new implementation—and seemed suddenly much more useful. I wondered why.
The HUD appeared again in Aperture, Apple’s newest app. Mysteriously, Aperture has once again reimplemented the HUD interface, throwing out iPhoto’s and Motion’s implementations. What a waste of money. Anyway, it was in this app that I finally realized what the HUD was really for:
