Yeah, I'm also running into an issue on Mobile Safari. When I start to pinch, the location of the image changes drastically. I'll take a look at the code...
I've experienced this issue as well and have not been able to find a solution. I believe the problem is in Sencha's gesture code misidentifying a pinch as a drag when the two fingers don't touch at the same time. I believe this is the case because it is impossible to reproduce in the iOS simulator where pinch touches are always perfectly synchronized. Someone with more skill than me will need to look at the gesture code and figure out a way to implement a better threshold for pinch vs drag
Are any of you coming to the conference / in the bay area? Would be great to meet up and talk over stuff like this, we'd love to help out if we can (aside from fixing that ancient bug of course - our bad :/)
I'll publish releases from GitHub to the market, so github is the best place to follow.
The current code on both includes a workaround for the pinch-center issue where the image will automatically "snap" back to center positioning and 1.0 scale when you zoom out to within a small range of 1.0
Ultimately I'd like to reproduce what some native apps do, where the image smoothly slides back to center as you approach scale=1.0. I don't have my head wrapper around the math for that right now, contributions welcome
Thanks for the reply.
For a very nice pinch-zoom implementation, including the math, you may want to take a look at iScroll 4. The guy got the zoom to bounce back (and forth) when the contents are too small or too big. I think this is a nice start for you...
In any case, I'd be very happy to receive S2 soon. If I was at Sencha, I'd have probably pushed built-in pinch/zoom functionality in S2... This would just fix so much problems for the developers.
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