XI 1.5 questions

Daniel Stone daniel at fooishbar.org
Thu Dec 11 13:51:39 PST 2008

On Thu, Dec 11, 2008 at 11:32:57AM -0500, Thomas Jaeger wrote:
> I'm currently in the process of updating my gesture-recognition
> application easystroke to reflect the XInput changes in xserver-1.6 and
> I have a couple of questions about the direction that we're headed.
> The first question is about the behavior under core pointer freezes
> caused by passive grabs with GrabModeSync.  Currently, xserver-1.6's
> behavior differs from xserver-1.5 in the following ways:
> (1) While the core pointer is frozen, XInput events report the logical
> state of the pointer, i.e. the point where the mouse was pressed down
> (2) After the client calls XAllowEvents(dpy, ReplayPointer), the
> complete motion history is replayed, but the coordinates reported are
> the same as in (1), which isn't very useful.
> (1) is not a big deal, since the information about the physical position
> of the pointer is still available through valuators. (2) would be an
> improvement over the behavior in 1.5 if actual physical coordinates were
> replayed, which is presumably what was intended here.

If that's the problem I'm thinking of, unfortunately that's unfixable.
The spec actually demands that {event,root}_[xy] in events track the
core pointer, not the current device.  Awesome, isn't it?

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