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.org

Supporting Multi-Touch In Non-Multi-Touch Linux Apps

Ubuntu

Published on 19 August 2010 10:02 AM EDT
Written by Mohamed Ikbel Boulabiar in Ubuntu
Comment On This Article

After the release of the Ubuntu Multi-Touch stack called UTouch and the X.Org Gesture Extension, the rising question would be the support of everyday applications, as only a few applications in Ubuntu 10.10 will properly support UTouch. Standard applications which are non-multi-touch-aware only recognize events which come from the keyboard and the mouse like key-presses and mouse clicks.

Last year when I was in the LII-ENAC Lab in Toulouse, we were discussing on how to deal with advanced input devices handling and how to develop this inside operating systems like Linux. One of the ideas is to consider the input as bricks which can be chained, modifying and enriching the information in each phase. And in the end of the chain, the input should take place in receivers, and one of the methods is to inject them in a way the application can recognize easily.

And here comes Ginn, which is a daemon filling the gap in-between by listening to gestures from the UTouch stack and injecting common key-press events inside applications according to the predefined rules.

As a beginning, two video demos have been prepared to validate the concept and show what it is possible to do with the multi-touch stack.


The first video (above) shows the control of the GNOME PDF reader called Evince, and the second one (below) shows the famous vector drawing tool Inkscape.


Ginn doesn't use DBus facilities but this support can be added later to get direct control on applications.

This background daemon fills the gap of multi-touch support and is a nice complement to the direct use of UTouch API. It can be also useful for closed-source applications running on Linux as they will be forced to accept multi-touch events even completely without detecting them.

Mohamed Ikbel Boulabiar is one of the developers behind the Ginn daemon and prepared this article for Phoronix.

Latest Linux Hardware Reviews
  1. 13-Way Low-End GPU Comparison With AMD's AM1 Athlon
  2. ASUS AM1I-A: A Mini-ITX Board For Socketed Kabini APUs
  3. Mini-Box M350: A Simple, Affordable Mini-ITX Case
  4. Overclocking The AMD AM1 Athlon & Sempron APUs
Latest Linux Articles
  1. Ubuntu 12.04.4 vs. 13.10 vs. 14.04 LTS Desktop Benchmarks
  2. AMD OpenCL Performance With AM1 Kabini APUs
  3. A Quick Look At GCC 4.9 vs. LLVM Clang 3.5
  4. Are AMD Athlon/Sempron APUs Fast Enough For Steam On Linux?
Latest Linux News
  1. Borderlands Is Being Considered For Linux
  2. Mesa 10.0 & 10.1 Stable Get Updated
  3. Getting Hit By The Variable Performance Of The Public Cloud
  4. Git 2.0 Test Releases Begin With Many Changes
  5. Wine 1.7.17 Works On Its Task Scheduler, C Run-Time
  6. The Improv ARM Board Still Isn't Shipping; Riding A Dead Horse?
  7. Debian To Maintain 6.0 Squeeze As An LTS Release
  8. Wasteland 2 Is Finally Released For Linux Gamers
  9. FreeBSD Advances For ARM, Bhyve, Clang
  10. Ubuntu 14.04 LTS "Trusty Tahr" Officially Released
  11. Ubuntu 12.04 LTS vs. 14.04 LTS Server Benchmarks
  12. QEMU 2.0 Released With ARM, x86 Enhancements
Latest Forum Discussions
  1. Suggestions about how to make a Radeon HD 7790 work decently?
  2. The GNOME Foundation Is Running Short On Money
  3. Updated and Optimized Ubuntu Free Graphics Drivers
  4. Radeon 8000M problematic on Linux?
  5. Linux Kernel Developers Fed Up With Ridiculous Bugs In Systemd
  6. After Jack Keane, RuseSoft will briing Ankh 3 to Linux through Desura
  7. Suspected PHP Proxy Issue
  8. Change installation destination from home directory