On Tue, Dec 28, 2010 at 10:06 PM, Kevin O'Connor <[email protected]> wrote: > On Mon, Dec 27, 2010 at 03:04:46PM -0600, Chris Bagwell wrote: >> Since xf86-input-synaptics 1.3.0 handles (X,Y) jumps during finger >> transitions, if clickpad users set their EmulateTwoFingerMinW to 5 I >> suspect they will see a lot less big cursor jumps... but they will >> still see small cursor movement click operations. Users could make >> use of AreaBottomEdge to shrink size of touchpad to work around the >> smaller movement. > > I was playing around with this a little. > > Setting "AreaBottomEdge=3800" did make the mouse jitter on button > press go away (at the cost of a smaller touchpad area). (Of course, > this would still need to work once left/right/middle button detection > is implemented.) > > I can also confirm that setting EmulateTwoFingerMinW=5 stops cursor > jumps when pressing two fingers. With a larger EmulateTwoFingerMinW > size, whenever I touch a second finger higher up on the clickpad the > cursor jumps. The distance of the jump is proportional to how far > away my second finger is to the first finger. The cursor jumps back > if I lift the second finger before lifting the first. Interestingly, > pressing a second finger lower on the touchpad does not cause jumps. > Also interesting - if I set "AreaBottomEdge=3800" and I press the > first finger in the button area, and then press a second finger higher > up on the touchpad, then I don't get a jump. (Maybe because X ignored > the first touch and then didn't get confused on the second?) > > -Kevin >
Thank you for confirmation the 2 settings are an improvement. It sounds mostly like I expected; especially for case whenEmulateTwoFingerMinW is greater then 5 . The Area*Edge logic doesn't currently account for multi-finger touch so I'm glad you didn't mention anything to negative occurring when 2 touches occur. Chris _______________________________________________ [email protected]: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
