RE: How should touch-action apply to multiple fingers?

Hey Rick,

I'm looking into this further to get you an accurate explanation of IE11 behavior in this scenario.

-Jacob

From: Rick Byers [mailto:rbyers@google.com]
Sent: Wednesday, November 6, 2013 4:01 PM
To: public-pointer-events@w3.org
Subject: How should touch-action apply to multiple fingers?

In our previous discussions on the semantics of touch-action I had focused exclusively on single-finger scenarios.  But touch browsers also support two-finger panning (and of course browsers also have other multi-finger behavior that is out of scope for this group).  It seems the spec should really describe how to determine the permitted touch actions when there is more than one touch point involved.

The behavior I'm getting from IE11 seems quite confusing.  For example, try two-finger panning at different locations in this test page: http://jsbin.com/aqEnoPo/2/edit.

Thanks,
   Rick