protocol: spell out that we're using linux/input-event-codes.h button codes
Because we already rely on it in the callers anyway. This is a retrofit, which
is not ideal but I'm not sure any compositor out there uses anything else.
Might as well define it.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
diff --git a/protocol/wayland.xml b/protocol/wayland.xml
index 8311a18..c516374 100644
--- a/protocol/wayland.xml
+++ b/protocol/wayland.xml
@@ -1872,6 +1872,14 @@
enter event.
The time argument is a timestamp with millisecond
granularity, with an undefined base.
+
+ The button is a button code as defined in the Linux kernel's
+ linux/input-event-codes.h header file, e.g. BTN_LEFT.
+
+ Any 16-bit button code value is reserved for future additions to the
+ kernel's event code list. All other button codes above 0xFFFF are
+ currently undefined but may be used in future versions of this
+ protocol.
</description>
<arg name="serial" type="uint" summary="serial number of the button event"/>
<arg name="time" type="uint" summary="timestamp with millisecond granularity"/>
