libinput/test
Peter Hutterer 9e37bc0cfa plugins: add support for lua plugins to change evdev event streams
This patch adds support for Lua scripts to modify evdev devices and
event frames before libinput sees those events.

Plugins in Lua are sandboxed and restricted in what they can do: no IO,
no network, not much of anything else.

A plugin is notified about a new device before libinput handles it and
it can thus modify that device (changes are passed through to our libevdev
context). A plugin can then also connect an evdev frame handler which
gives it access to the evdev frames before libinput processes them. The
example plugin included shows how to swap left/right mouse buttons:

    libinput:register({1})

    function frame(device, frame)
        for _, v in ipairs(frame.events) do
            if v.usage == evdev.BTN_RIGHT then
                v.usage = evdev.BTN_LEFT
            elseif v.usage == evdev.BTN_LEFT then
                v.usage = evdev.BTN_RIGHT
            end
        end
        return frame
    end

    function device_new(plugin, device)
        local usages = device:usages()
        if usages[evdev.BTN_LEFT] and usages[evdev.BTN_RIGHT] then
            device:connect("evdev-frame", frame)
        end
    end

    libinput:connect("new-evdev-device", device_new)

A few other example plugins are included in this patch

Part-of: <https://gitlab.freedesktop.org/libinput/libinput/-/merge_requests/1192>
2025-08-01 16:04:09 +10:00
..
.clang-tidy Add a clang-tidy file 2025-04-07 08:43:36 +00:00
50-litest.conf test: rename the identifier in the 50-litest.conf 2020-07-15 09:36:48 +10:00
build-cxx.cc meson.build: drop the separate cpp flags 2020-09-09 13:57:39 +10:00
build-pedantic.c Fix a couple of coding style issues 2015-05-01 12:09:57 +10:00
check-leftover-udev-rules.sh test: add a script to check for leftover litest rules 2018-03-23 12:41:23 +10:00
generate-gcov-report.sh Hook up gcov for coverage reports 2017-01-20 10:35:37 +10:00
helper-copy-and-exec-from-tmp.sh tools: move the builddir lookup function out to a separate file 2019-03-14 11:28:05 +10:00
libinput-test-suite.man test: rename the identifier in the 50-litest.conf 2020-07-15 09:36:48 +10:00
litest-device-absinfo-override.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-acer-hawaii-keyboard.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-acer-hawaii-touchpad.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-aiptek-tablet.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-alps-3fg.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-alps-dualpoint.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-alps-semi-mt.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-anker-mouse-kbd.c test: update a test for current kernels 2025-07-01 09:20:57 +00:00
litest-device-apple-appletouch.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-apple-internal-keyboard.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-apple-magicmouse.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-asus-rog-gladius.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-atmel-hover.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-bcm5974.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-calibrated-touchscreen.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-cyborg-rat-5.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-dell-canvas-totem-touch.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-dell-canvas-totem.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-elan-tablet.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-elantech-touchpad.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-format-string.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-generic-pressurepad.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-generic-singletouch.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-gpio-keys.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-hp-wmi-hotkeys.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-huion-pentablet.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-huion-q620m-dial.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-ignored-mouse.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-keyboard-all-codes.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-keyboard-quirked.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-keyboard-razer-blackwidow.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-keyboard-razer-blade-stealth-videoswitch.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-keyboard-razer-blade-stealth.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-keyboard.c evdev: move the SYN_REPORT 1 filtering to the touchpad backend 2025-07-31 00:50:30 +00:00
litest-device-lenovo-scrollpoint.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-lid-switch-surface3.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-lid-switch.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-logitech-media-keyboard-elite.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-logitech-trackball.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-magic-trackpad.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-mouse-low-dpi.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-mouse-ps2.c test: add a typical PS/2 wheel mouse 2025-07-17 00:36:52 +00:00
litest-device-mouse-roccat.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-mouse-virtual.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-mouse-wheel-click-angle.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-mouse-wheel-click-count.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-mouse-wheel-hires-disabled.c plugin: ignore high-resolution wheel events from disabled wheels 2025-07-24 09:13:12 +10:00
litest-device-mouse-wheel-tilt.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-mouse.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-ms-nano-transceiver-mouse.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-ms-surface-cover.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-nexus4-touch-screen.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-ploopy-pavonis-stylus.c test: add a test device for a pressureless tablet 2025-07-09 21:21:32 +00:00
litest-device-protocol-a-touch-screen.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-qemu-usb-tablet.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-sony-vaio-keys.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-synaptics-hover.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-synaptics-i2c.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-synaptics-phantomclicks.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-synaptics-pressurepad.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-synaptics-rmi4.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-synaptics-st.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-synaptics-t440.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-synaptics-x1-carbon-3rd.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-synaptics-x220.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-tablet-doubledial.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-tablet-mode-switch.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-tablet-rel-dial.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-thinkpad-extrabuttons.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-touch-screen.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-touchpad-palm-threshold-zero.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-touchscreen-fuzz.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-touchscreen-invalid-range.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-touchscreen-mt-tool.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-trackpoint.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-uclogic-tablet.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-vmware-virtual-usb-mouse.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-bamboo-2fg-finger.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-bamboo-2fg-pad.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-bamboo-2fg-pen.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-bamboo-16fg-pen.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-calibrated-tablet.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-cintiq-12wx-pen.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-cintiq-13hdt-finger.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-cintiq-13hdt-pad.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-cintiq-13hdt-pen.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-cintiq-24hd-pen.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-cintiq-24hdt-pad.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-cintiq-pro-16-finger.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-cintiq-pro-16-pad.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-cintiq-pro-16-pen.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-ekr.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-hid4800-pen.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-intuos3-pad.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-intuos5-finger.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-intuos5-pad.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-intuos5-pen.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-isdv4-524c-pen.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-isdv4-4200-pen.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-isdv4-e6-finger.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-isdv4-e6-pen.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wacom-mobilestudio-pro-pad.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-waltop-tablet.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-wheel-only.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-xen-virtual-pointer.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-device-yubikey.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-int.h Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-main.c meson.build: change from config.set10() and #if to config.set() and #ifdef 2025-07-28 12:04:09 +10:00
litest-runner.c test: a skipped test does not count as failure 2025-07-21 11:53:57 +10:00
litest-runner.h Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest-selftest.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
litest.c test: allow creating a context with a custom plugindir 2025-08-01 15:38:39 +10:00
litest.h test: allow creating a context with a custom plugindir 2025-08-01 15:38:39 +10:00
symbols-leak-test test: print the usage from the symbols-leak-test 2022-11-22 19:02:03 +00:00
test-builddir-lookup.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
test-device.c evdev: move the SYN_REPORT 1 filtering to the touchpad backend 2025-07-31 00:50:30 +00:00
test-gestures.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
test-keyboard.c test: fix the keycode obfuscation test 2025-08-01 04:02:57 +00:00
test-library-version.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
test-log.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
test-misc.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
test-pad.c meson.build: change from config.set10() and #if to config.set() and #ifdef 2025-07-28 12:04:09 +10:00
test-path.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
test-plugins-lua.c plugins: add support for lua plugins to change evdev event streams 2025-08-01 16:04:09 +10:00
test-pointer.c test: switch another test to use logcapture 2025-08-01 04:02:57 +00:00
test-quirks.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
test-switch.c test: fix a race condition during a switch test 2025-07-10 00:36:23 +00:00
test-tablet.c meson.build: change from config.set10() and #if to config.set() and #ifdef 2025-07-28 12:04:09 +10:00
test-totem.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
test-touch.c meson.build: change from config.set10() and #if to config.set() and #ifdef 2025-07-28 12:04:09 +10:00
test-touchpad-buttons.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
test-touchpad-tap.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
test-touchpad.c meson.build: change from config.set10() and #if to config.set() and #ifdef 2025-07-28 12:04:09 +10:00
test-trackball.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
test-trackpoint.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
test-udev.c Run clang-format over the code 2025-07-01 16:42:44 +10:00
test-util-includes.c.in test: rename test-util-includes.c to .c.in 2025-04-04 15:47:23 +00:00
test-utils.c util: add a helper struct for an evdev mask 2025-08-01 14:29:44 +10:00
test_quirks_files.py pre-commit: bump to latest ruff-format 2025-07-09 00:13:00 +00:00
valgrind.suppressions test: grab the device before any lid or tablet mode switches 2020-07-07 18:51:33 +10:00