On Wed, Mar 13, 2013 at 12:12:27AM -0700, Paul Vojta wrote: > On Wed, Mar 13, 2013 at 02:18:26PM +1000, Peter Hutterer wrote: > > On Tue, Mar 12, 2013 at 12:53:33PM -0700, Paul Vojta wrote: > > > Dear all: > > > > > > I've been working on adding "smooth scrolling" to xdvi (after a long > > > hiatus), and I'm encountering some glitches when switching pointer > > > devices. > > > > > > Specifically, when a slave is being switched back on, the scroll valuators > > > are always reported as having value 0 in the classes field of the > > > XIDeviceChanged event. > > > > > > When using the evdev driver, however, the valuator values are the same > > > as when the device was last used, and so this causes a large scroll > > > glitch when resuming using the device. (When using the synaptics driver, > > > the values are always reset, so there is no problem in that case.) > > > (I'm only checking the vertical scroll valuator so far, but I expect > > > that the same would be true for the horizontal scroll valuator.) > > > > unfortunately, that is the correct behaviour > > http://who-t.blogspot.com.au/2012/06/xi-21-protocol-design-issues.html > > > > the reset should not happen in synaptics, that's likely a bug in the driver. > > No, it's not the problem with leaving, scrolling elsewhere, and then > re-entering a window. I've encountered and (imperfectly) dealt with that > problem already. > > Rather, it's a problem with SlaveSwitch. It can happen even if the > pointer never leaves the window. > > In more detail: I have my laptop's built-in Synaptics touchpad (with the > synaptics driver), and an external USB mouse (Cirque USB GlidePoint, > 0488:0022) (with the evdev driver -- it behaves just like a normal mouse, > except that it doesn't cause a SlaveSwitch every time I jiggle the table). > > I can start up xdvi, move the pointer into the window, scroll down with the > external (Cirque) mouse, switch to the built-in touchpad, resume using the > external mouse, and then when I scroll the mouse with it I get a huge scroll > effect instead of just one click. > > There *is* a place in the SlaveSwitch XI2-event for a valuator value, but > it's always zero.
confirmed, please file a bug and assign it to me Cheers, Peter _______________________________________________ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.x.org/mailman/listinfo/xorg Your subscription address: arch...@mail-archive.com
