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-- SPDX-License-Identifier: MIT
--
-- This is an example libinput plugin
--
-- This plugin detects the Copilot key on the keyboard with
-- the given VID/PID and replaces it with a different key (sequence).
-- UNCOMMENT THIS LINE TO ACTIVATE THE PLUGIN
-- libinput:register({1})
-- Replace this with your keyboard's VID/PID
KEYBOARD_VID = 0x046d
KEYBOARD_PID = 0x4088
meta_is_down = false
shift_is_down = false
-- shift-A, because you can never have enough screaming
replacement_sequence = { evdev.KEY_LEFTSHIFT, evdev.KEY_A }
function frame(device, frame, _)
for _, v in ipairs(frame) do
if v.value ~= 2 then -- ignore key repeats
if v.usage == evdev.KEY_LEFTMETA then
meta_is_down = v.value == 1
elseif v.usage == evdev.KEY_LEFTSHIFT then
shift_is_down = v.value == 1
elseif v.usage == evdev.KEY_F23 and meta_is_down and shift_is_down then
-- We know from the MS requirements that F23 for copilot is
-- either last key (on press) or the first key (on release)
-- of the three-key sequence, and no other keys are
-- within this frame.
if v.value == 1 then
-- Release our modifiers first
device:prepend_frame({
{ usage = evdev.KEY_LEFTSHIFT, value = 0 },
{ usage = evdev.KEY_LEFTMETA, value = 0 },
})
-- Insert our replacement press sequence
local replacement_frame = {}
for _, rv in ipairs(replacement_sequence) do
table.insert(replacement_frame, { usage = rv, value = 1 })
end
device:append_frame(replacement_frame)
else
-- Insert our replacement release sequence
local replacement_frame = {}
for idx = #replacement_sequence, 1, -1 do
table.insert(replacement_frame, { usage = replacement_sequence[idx], value = 0 })
end
device:append_frame(replacement_frame)
-- we don't care about re-pressing shift/meta because the
-- rest of the stack will filter the release for an
-- unpressed key anyway.
end
return {} -- discard this frame
end
end
end
end
function device_new(device)
local info = device:info()
if info.vid == KEYBOARD_VID and info.pid == KEYBOARD_PID then
device:connect("evdev-frame", frame)
end
end
libinput:connect("new-evdev-device", device_new)
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