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

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 Articles & Reviews
  1. AMD Radeon R9 290 OpenGL On Ubuntu 15.04: Catalyst vs. RadeonSI Gallium3D
  2. Ubuntu 15.04 Offers Faster OpenGL For AMD Radeon GPUs On Open-Source
  3. Ubuntu 15.04 Brings Some Graphics Performance Improvements For Intel Haswell
  4. Sub-$20 802.11n USB WiFi Adapter That's Linux Friendly
  5. The Lenovo T450s Is Working Beautifully With Linux
  6. Linux 4.0 SSD EXT4 / Btrfs / XFS / F2FS Benchmarks
Latest Linux News
  1. GTX 750 Maxwell Acceleration Starts Working On Nouveau With Linux 4.1
  2. Reasons To Make A PTS/OB Test Profile For Your Software
  3. Vivaldi TP3 Browser Adds Native Window Support On Linux
  4. A Brief Update On Fwupd For Linux Firmware Updating Of Devices
  5. Upgrading To KDE Plasma 5.3 On Kubuntu 15.04
  6. Ubuntu 15.10 Plans Being Discussed Next Week
  7. KDE Plasma 5.3 Released: Expands On Widgets, Bluetooth, PM
  8. Making It Easier To Deploy CUDA On Fedora
  9. GCC 4.9.2 vs. GCC 5 Benchmarks On An Intel Xeon Haswell
  10. Intel Haswell/Broadwell Power Use On Linux Still Moving Lower
Most Viewed News This Week
  1. Ubuntu's Desktop-Next Switching From .DEBs To Snappy
  2. Systemd Kills Off Shutdownd
  3. KDBUS Still Hasn't Been Pulled, Might Not Land For Linux 4.1
  4. My Favorite Computer Desk Of The Past Decade For Less Than $100
  5. AMD Open-Sources "Addrlib" From Catalyst
  6. Qt Creator 3.4 Brings C++ Programming Improvements & More
  7. Debian 8.0 Jessie Is Ready For Release This Weekend
  8. GIMP's Porting To GTK3 Continues