1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking Benchmarking Platform
Phoromatic Test Orchestration

X Input 2.3 Patches Bring Pointer Barrier Events

X.Org

Published on 07 December 2012 09:43 AM EST
Written by Michael Larabel in X.Org
Add A Comment

Peter Hutterer has published his patches for X Input 2.3, the next version of the X.Org Input extension that's likely to be merged into X.Org Server 1.14. The notable addition to X Input 2.3 is Pointer Barrier Events.

Pointer Barrier Events of Xi 2.3 make it where if a pointer hits one of these defined barriers, events are sent to selected clients. Via Barrier Release Requests, a client can "release" the pointer so that it can pass through the barrier with the next movement. The use-cases for Pointer Barrier Events is hot-corners/edges that respond to pushing against them (stemming from GNOME 3.x developer requests) and ad-hoc transparent barriers so depending upon the pointer speed the user can move the barrier (a request by Ubuntu's Unity developers).

Current issues with this work come down to grab behavior being different for other events, loss of Predictable Pointer Acceleration across a barrier, device-specific release isn't yet implemented, and a passive grab test is currently failing.

Aside from touching the X.Org Server, updating to X Input 2.3 also requires changes to inputproto, libXi, and the xorg-integration-tests.

Hutterer ends his mailing list post with "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."

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Linux News
  1. Fedora 22 Is Being Released Next Tuesday
  2. OpenWRT 15.05 Preparing Improved Security & Better Networking
  3. Using The New LLVM/Clang OpenMP Support
  4. Zapcc Claims To Be A "Much Faster C++ Compiler"
  5. Godot 1.1 Engine Release Brings New 2D Engine
  6. Intel VA-API Driver 1.6 Is Coming
  7. Canonical Is Reportedly Considering An IPO
  8. GNOME 3.18 - GTK3 Now Supports RandR 1.5
  9. Fedora 22 Risks Being Delayed Beyond Next Week
  10. Systemd 220 Has Finally Been Released
  11. LibreOffice 5.0 Beta 1 Released
  12. Allwinner Publishes New CedarX Open-Source Code
Latest Articles & Reviews
  1. Btrfs RAID 0/1 Benchmarks On The Linux 4.1 Kernel
  2. The State Of Various Firefox Features
  3. Intel Iris Graphics Performance With Mesa 10.6
  4. Fedora Workstation 22 Is Looking Great, Running Fantastic
Most Viewed News This Week
  1. The Linux 4.0 Kernel Currently Has An EXT4 Corruption Issue
  2. AMDGPU Open-Source Driver Code Continues Maturing
  3. Oculus Rift Suspends Linux Development To Focus On Windows
  4. Microsoft Open-Sources The Windows Communication Foundation
  5. LibreOffice 5.0 Open-Source Office Suite Has Been Branched
  6. Another HTTPS Vulnerability Rattles The Internet
  7. Wayland / Weston 1.8 Release Candidate Arrives
  8. Linux 4.1-rc4 Kernel Arrives A Day Late