This touchpad has firmware that seems to buffer events. In the words of the reporter: In usage, it feels like motions vary between smooth and choppy; slow movements are smooth and quick movements are choppy. It's as if the touchpad aggregates quick movements and sends one big movement instead of sending discrete events. To make the movement more natural, the events preceding the jump should be of higher magnitude and the jump less pronounced, but that's just not how the touchpad works, it seems. In the actual event data this looks exactly like a pointer jump: small movements, one big one, then small ones again. If we filter that large movement out we prevent the user from moving quickly. There's no way to detect this or work around this, so let's add a quirk that disables the jump detection for this device. Fixes #506 Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> |
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| CODING_STYLE.md | ||
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libinput
libinput is a library that provides a full input stack for display servers and other applications that need to handle input devices provided by the kernel.
libinput provides device detection, event handling and abstraction to minimize the amount of custom input code the user of libinput needs to provide the common set of functionality that users expect. Input event processing includes scaling touch coordinates, generating relative pointer events from touchpads, pointer acceleration, etc.
User documentation
Documentation explaining features available in libinput is available here.
This includes the FAQ and the instructions on reporting bugs.
Source code
The source code of libinput can be found at: https://gitlab.freedesktop.org/libinput/libinput
For a list of current and past releases visit: https://www.freedesktop.org/wiki/Software/libinput/
Build instructions: https://wayland.freedesktop.org/libinput/doc/latest/building.html
Reporting Bugs
Bugs can be filed on freedesktop.org GitLab: https://gitlab.freedesktop.org/libinput/libinput/issues/
Where possible, please provide the libinput record output
of the input device and/or the event sequence in question.
See https://wayland.freedesktop.org/libinput/doc/latest/reporting-bugs.html for more info.
Documentation
- Developer API documentation: https://wayland.freedesktop.org/libinput/doc/latest/development.html
- High-level documentation about libinput's features: https://wayland.freedesktop.org/libinput/doc/latest/features.html
- Build instructions: https://wayland.freedesktop.org/libinput/doc/latest/building.html
- Documentation for previous versions of libinput: https://wayland.freedesktop.org/libinput/doc/
Examples of how to use libinput are the debugging tools in the libinput repository. Developers are encouraged to look at those tools for a real-world (yet simple) example on how to use libinput.
- A commandline debugging tool: https://gitlab.freedesktop.org/libinput/libinput/tree/master/tools/libinput-debug-events.c
- A GTK application that draws cursor/touch/tablet positions: https://gitlab.freedesktop.org/libinput/libinput/tree/master/tools/libinput-debug-gui.c
License
libinput is licensed under the MIT license.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: [...]
See the COPYING file for the full license information.
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Documentation generated from git commit GIT_VERSION