In general, a user’s changes to a Cocoa NSTextField are saved when they finish editing (by tabbing or clicking to another field) or press return. This is fine, and it works 95% of the time. But on occasion we may find good reason to saved a user’s changes regardless of whether they’ve performed one of […]

Scott Stevenson has posted the second part of his Intro to Quartz tutorial at Cocoa Dev Central. The visual production of his tutorials is always really impressive, because he identifies (by instinct, I assume) the best graphical illustrations for any given point. This second Quartz tutorial is especially notable for the scope of techniques it […]

I’ve been working on iTunes integration for FlexTime. My model for this feature is roughly approximated by GarageBand’s “Send To iTunes” feature, which packages up the current song into an M4A format, sends it off to iTunes, starts playing it, and makes sure the playlist into which it was added becomes visible in the iTunes […]

Resolution independence is the notion that all graphics on a computer display should be zoomable to an arbitrary multiplier without losing quality. If you know even the slightest thing about computer graphics, you’ll understand that in a resolution independent world, bitmaps are out and vector graphics are in. Vector graphics can scale gracefully to an […]