Linux input key codes are a better internal representation than
QKeyCode:
- With Linux input key codes as the internal representation, keys
previously lost solely because the middle layer between event sources
and sinks used QKeyCode will be preserved, since Linux key codes
cover all keys that those sources and sinks use. For example,
KEY_KPJPCOMMA cannot be represented with QKeyCode, but it is widely
supported by event sources and sinks since it is included in linux,
atset1, atset2, usb, x11, osx, qnum (derived from atset1),
xorgxquartz, and xorgevdev (derived from linux).
- They make it possible to pass through Linux host key codes to Linux
guests to preserve all key inputs.
- They simplify consumers by avoiding QKeyCode aliases, namely
asterisk/kp_multiply and sysrq/print.
This matches the approach used by virtio and Xen.
Signed-off-by: Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20260520-input-v3-4-7c9e4c7abe34@rsg.ci.i.u-tokyo.ac.jp>
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