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. Scythe Mugen MAX
  2. Intel Core i7 5960X Haswell-E On Linux
  3. Intel 80GB 530 Series M.2 SSD On Linux
  4. With A New Motherboard, The Core i7 5960X Haswell-E Lights Up
Latest Linux Articles
  1. RadeonSI Gallium3D vs. Catalyst At 4K UHD On Linux
  2. MSAA RadeonSI Gallium3D Performance Preview
  3. Intel Core i7 5960X CPU Core Scaling Under Linux
  4. AMD RadeonSI Gallium3D Performance For 4K Linux Gaming
Latest Linux News
  1. GNOME 3.14 Makes More Progress In Running Natively On Wayland
  2. Minix 3.3 Released With Cortex-A8 ARM Support, NetBSD Userland Compatibility
  3. More Intel DRM Changes Queued For Linux 3.18, Including Old i830M Fixes
  4. New Code Starts Lining Up For X.Org Server 1.17
  5. Rust Developers Planning For The Rust 1.0 Language
  6. RPM 4.12 Brings New Switches, New Rpm2Archive Utility
  7. Nouveau For Linux 3.18 Gains DP Audio, More Re-Clocking
  8. SUSE Gets Bought Out Again
  9. Enlightenment E19 Officially Released With Its Own Wayland Compositor
  10. OpenMediaVault 1.0 Released As New Linux NAS Alternative
Latest Forum Discussions
  1. support for first generation UVD blocks (RV6xx, RS780, RS880 and RV790)
  2. Nvidia joins the ranks of Apple and Microsoft
  3. Updated and Optimized Ubuntu Free Graphics Drivers
  4. New Group Calls For Boycotting Systemd
  5. Hd 6850
  6. nv and xorg.conf under Debian PPC
  7. X.Org Is Looking For Some Female Help
  8. FSF Issues Their Rebuttal To Apple's New iPhone, Watch & Apple Pay