libinput  0.16.0
A wrapper library for input devices
libinput Documentation

libinput

libinput is a library that handles input devices for display servers and other applications that need to directly deal with input devices.

It provides device detection, device handling, input device event processing and abstraction so minimize the amount of custom input code the user of libinput need to provide the common set of functionality that users expect. Input event processing includes scaling touch coordinates, generating pointer events from touchpads, pointer acceleration, etc.

libinput originates from weston, the Wayland reference compositor.

Architecture

libinput is not used directly by applications, rather it is used by the xf86-input-libinput X.Org driver or wayland compositors. The typical software stack for a system running Wayland is:

dot_libinput-stack-wayland.png

Where the Wayland compositor may be Weston, mutter, KWin, etc. Note that Wayland encourages the use of toolkits, so the Wayland client (your application) does not usually talk directly to the compositor but rather employs a toolkit (e.g. GTK) to do so.

The simplified software stack for a system running X.Org is:

dot_libinput-stack-xorg.png

Again, on a modern system the application does not usually talk directly to the X server using Xlib but rather employs a toolkit to do so.

Source code

The source code of libinput can be found at: http://cgit.freedesktop.org/wayland/libinput

For a list of current and past releases visit: http://www.freedesktop.org/wiki/Software/libinput/

Reporting Bugs

Bugs can be filed in the libinput component of Wayland: https://bugs.freedesktop.org/enter_bug.cgi?product=Wayland&component=libinput

Where possible, please provide an evemu recording of the input device and/or the event sequence in question.

Documentation

Developer API documentation: http://wayland.freedesktop.org/libinput/doc/latest/modules.html

High-level documentation about libinput's features: http://wayland.freedesktop.org/libinput/doc/latest/pages.html

License

libinput is licensed under the MIT license.

Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of the copyright holders not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. The copyright holders make no representations about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty.

See the COPYING file for the full license information.