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Peter Hutterer e9f3fc080c tablet: revamp the tablet pressure range handling 
Commit 48cd4c7287 ("tablet: track pressure ranges per tablet") added
tracking of pressure ranges per tablet by storing ranges for multiple
(up to 4) tablets in the tool. This doesn't scale well, had the
disadvantage of the range only being updated on out-of-proximity, and is
the wrong approach anyway.

Turns out we can update the pressure range on proximity in since we
haven't processed the pressure values yet at that stage. This gives us
better behavior when switching between tablet devices (including unplug)
as the pen will only lag behind once (when setting the range) instead
of once per new tablet.

However, since the offset (which is a tool issue) applies on top of the
pressure range (which is a tablet property) this requires that we now
track the offset as percent of the range.

So on proximity in we apply the new tablet range, then apply the e.g. 5%
pressure offset within this range.

This means we no longer have to track multiple tablets since it'll just
apply on the current tablet when in proximity.

Part-of: <https://gitlab.freedesktop.org/libinput/libinput/-/merge_requests/1172>
2025-04-04 22:44:29 +00:00
.gitlab/issue_templates gitlab: make the bug template the default template 2023-11-23 09:53:09 +10:00
.gitlab-ci CI: disable docs on the arch build 2025-04-03 23:40:17 +00:00
completion/zsh zsh: update completion to include latest debug-events options 2024-11-06 06:38:44 +10:00
doc touchpad: implement support for three-finger drag 2025-02-18 06:44:01 +00:00
include Remove trailing whitespaces in the tree 2022-11-25 10:08:20 +10:00
quirks quirks: add touchpad quirk for ThinkBook 16 G7+ ASP 2025-04-01 12:25:09 +00:00
src tablet: revamp the tablet pressure range handling 2025-04-04 22:44:29 +00:00
test util: add some extra strv helpers 2025-04-04 22:19:47 +00:00
tools Add a few missing includes for config.h 2025-04-04 15:47:23 +00:00
udev udev: remove accidentally-checked in file 2025-04-04 15:47:23 +00:00
.dir-locals.el indentation: add .dir-locals.el for emacs 2018-02-26 18:44:00 +10:00
.editorconfig editorconfig: add settings for sym files 2024-11-04 10:31:30 +00:00
.gitignore gitignore: ignore gnuplot files 2018-05-10 16:25:40 +10:00
.gitlab-ci.yml CI: disable docs on the arch build 2025-04-03 23:40:17 +00:00
.pre-commit-config.yaml pre-commit: add a hook for checking for duplicate empty lines 2025-03-11 11:41:34 +00:00
.triage-policies.yml triage-policies: update to handle a few more things in MRs as well 2025-02-03 09:16:02 +10:00
.vimdir Add .vimdir for libinput-specific settings 2015-05-25 09:17:29 +10:00
CODING_STYLE.md Drop the Signed-off-by requirement 2023-07-21 09:08:46 +10:00
CONTRIBUTING.md CONTRIBUTING: Add CONTRIBUTING.md 2024-02-28 17:07:45 +01:00
COPYING Change various references to the master branch to main 2021-04-29 01:31:03 +00:00
meson.build test: rename test-util-includes.c to .c.in 2025-04-04 15:47:23 +00:00
meson_options.txt meson: add option for internal event debugging 2025-03-13 06:13:38 +00:00
README.md Change various references to the master branch to main 2021-04-29 01:31:03 +00:00

README.md

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

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.

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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