As Microsoft has decreed, that key sends LEFTMETA + LEFTSHIFT + F23
(usually across multiple frames) and the then the same in reverse when
released.
xkeyboard-config 2.44 maps this sequence by default to XF86Assistant but
for the use-cases where this does not work reshuffling the whole event
sequence is the best approach and that can easily be done with a plugin.
Note that this is the minimum effort plugin - it works for one
keyboard at at time (duplicate the plugin if two keyboards are needed,
or remove the vid/pid check) and it does *not* intercept the meta/shift
key presses and delay them, it simply releases them on F23 and then
replays the new sequence. Good enough for an example plugin.
Example sequence produces shift + a on press and releases a + shift on
release. Holding the key will thus produce AAAAAAAAA which is an
excellent summary of how this key was designed.
Part-of: <https://gitlab.freedesktop.org/libinput/libinput/-/merge_requests/1352>
Because our lua hooks don't expose the device-added callback we need to
cache any calls to disable a feature and then apply it quietly when the
device is actually added. Any other call can go straight through.
Part-of: <https://gitlab.freedesktop.org/libinput/libinput/-/merge_requests/1249>
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>
