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. NVIDIA's Proprietary Driver Is Moving Closer With Kernel Mode-Setting
  2. The Latest Linux Kernel Git Code Fixes The EXT4 RAID0 Corruption Problem
  3. Features Added To Mesa 10.6 For Open-Source GPU Drivers
  4. Ubuntu's LXD vs. KVM For The Linux Cloud
  5. Fedora Server 22 Benchmarks With XFS & The Linux 4.0 Kernel
  6. GCC 6 Gets Support For The IBM z13 Mainframe Server
  7. Fedora 22 Is Being Released Next Tuesday
  8. OpenWRT 15.05 Preparing Improved Security & Better Networking
  9. Using The New LLVM/Clang OpenMP Support
  10. Zapcc Claims To Be A "Much Faster C++ Compiler"
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. The Linux 4.0 EXT4 RAID Corruption Bug Has Been Uncovered
  3. AMDGPU Open-Source Driver Code Continues Maturing
  4. Microsoft Open-Sources The Windows Communication Foundation
  5. Another HTTPS Vulnerability Rattles The Internet
  6. LibreOffice 5.0 Open-Source Office Suite Has Been Branched
  7. Systemd 220 Has Finally Been Released
  8. Will Ubuntu Linux Hit 200 Million Users This Year?