This is the protocol and client-side for the proposed XI 2.3 extension for pointer barrier events and barrier release requests. This feature adds two things: - if a pointer hits a barrier, events are sent to selected clients - a client may "release" the pointer, allowing it to pass through the barrier with the next movement.
This enables two distinct user-visible features: - hot corners/edges that respond to pushing against them (GNOME3 wants this) - ad-hoc transparent barriers, so that depending on the speed of the pointer the user can move through the barrier (Unity wants this) Potential/current issues: - grab behaviour is different to other events - loss of predictable pointer acceleration across a barrier. In my tests, I have not found this to be noticable - device-specific release has not yet been implemented - one of the passive grab tests currently fails For a full view of the development history plus server and tests see the following repos: git://people.freedesktop.org/~whot/inputproto.git :barriers git://people.freedesktop.org/~whot/libXi.git :barriers git://people.freedesktop.org/~whot/xserver.git :barriers git://people.freedesktop.org/~whot/xorg-integration-tests.git :barriers Many thanks to Jasper and Chris, who did most of the work here. I think this is a valuable addition to 1.14, unless someone can find significant issues with the protocol as it is proposed here. Should we merge this for 1.14, I do reserve the right to disable this feature in the server before the release, unless we have a credible client-side implementation. We've learned the lesson with smooth scrolling that a server-implementation only is not good enough. Comments appreciated. Cheers, Peter _______________________________________________ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel