tree fb5f53ec5e413764aa12b92c5f8ffabf1bc48844
parent ac3311f484d8b23ccfaec07217b43730af918fe4
author Jeff Brown <jeffbrown@google.com> 1299721188 -0800
committer Jeff Brown <jeffbrown@android.com> 1306196378 -0700

Use touch pad gestures to manipulate the pointer. (DO NOT MERGE)

1. Single finger tap performs a click.
2. Single finger movement moves the pointer (hovers).
3. Button press plus movement performs click or drag.
   While dragging, the pointer follows the finger that is moving
   fastest.  This is important if there are additional fingers
   down on the touch pad for the purpose of applying force
   to an integrated button underneath.
4. Two fingers near each other moving in the same direction
   are coalesced as a swipe gesture under the pointer.
5. Two or more fingers moving in arbitrary directions are
   transformed into touches in the vicinity of the pointer.
   This makes scale/zoom and rotate gestures possible.

Added a native VelocityTracker implementation to enable intelligent
switching of the active pointer during drags.

Change-Id: I7b7ddacc724fb1306e1590dbaebb740d3130d7cd