[PATCHES] Multitouch v3 - please review/test
chase.douglas at canonical.com
Fri Dec 17 12:59:30 PST 2010
On 12/17/2010 12:09 PM, Daniel Stone wrote:
> Hi all,
> I've now got multitouch to a stage I'm pretty happy with: grabs and the
> 'not-for-you' events are implemented basically as discussed and seem to
> be working fine, and it's good with both indirect (a Magic Mouse) and
> direct (a Lenovo IdeaPad S10-3t) touch devices.
> The major difference here is obviously the event delivery: instead of
> delivering only to the first applicable target, we now deliver to all
> grabbing clients, and the first selecting client. An 'owner' flag
> denotes whether or not the client currently owns the stream: grabbing
> clients may accept the touch (which ceases delivery to all other
> clients), or reject it (removing them from the delivery list and passing
> ownership on to the next client).
> Note that adding a grab or a selection does not result in starting to
> receive touch events mid-stream: if you did not receive the TouchBegin,
> you will never receive any events for that touch stream.
> At the moment, the spec wording could definitely use some cleaning up,
> and ProcessTouchEvents gets a bit hairy in places, which could
> definitely be improved by some more pretty macros, or further
> refactoring of EventIsDeliverable and friends.
> But at this stage, it really just needs some active review and testing -
> if you guys could please have a look over it, it'd be much appreciated.
> I'll send the patches as followups to this, and they're also in the
> 'multitouch' branches of the following repos:
I haven't reviewed the protocol specification changes yet, nor have I
performed any code review. I built some test packages, but I found that
touches sometimes do not come through. I believe I saw some touches from
my magic trackpad on the first run of xinput test-xi2, but I can't get
any more now. Seems like it gets stuck. I think I may have seen the same
issue during one test of my touchscreen too.
I won't really have time to debug this myself until I get back after new
years, but I hope that's enough information for you to try to reproduce.
My testing base is my 1.9 server backport, but I didn't come across any
odd conflicts that make me wonder if they were a cause of this, but of
course there could be rebase bugs even without conflicts. You can find
the code at:
Denis, you've been the primary user of my backport PPA. Would you like
me to upload this update into the PPA now, or wait until this touch bug
Thanks again Daniel!
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