andreasgal/gaia — pull request #1254 by davidflanagan (2012-04-19 23:40:55+00:00)
Title: pinch-to-zoom gestures for the gallery app

Finally!

Note that you can't test this on the desktop; it requires two-finger gestures.

It was surprisingly hard to get this right. But there are lots of comments in the code explaining how it works.