probably many people have seen this kind of tricks. I'm thinking about using this technique for something more interesting than just overrated gesture, so I have made this in Qt as a preparation.
I once tried to make something like this for image zooming in MediaBox. Too bad this gesture cannot be well detected on a resistive touch screen. It kinda worked but was awkward so I decided to not keep it in.
And you may only move one finger...
I also think pinch zooming is some idea of apple which is mainly interesting for marketing because it LOOKS intuitive and cool. But IMHO in reality, it is quite uncomfortable to do this motion with the fingers. at the same time you barely see anything on the screen because your hand is over it. It's the same thing whith the swirl-zoom. In daily use, the double tap is sufficient and if I need more accurate zoom I use the volume buttons.
