[PATCH v2 wayland] protocol: spell out that we're using linux/input-event-codes.h button codes

[Jonas Ådahl]

On Fri, Nov 18, 2016 at 12:35:27PM +1000, Peter Hutterer wrote:
> 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 at who-t.net>

Reviewed-by: Jonas Ådahl <jadahl at gmail.com>

> ---
> This is the button bit only which I think we agreed on so far. I'll do the
> key codes in a separate patch.
> 
>  protocol/wayland.xml | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/protocol/wayland.xml b/protocol/wayland.xml
> index 6c6d078..76ffb51 100644
> --- a/protocol/wayland.xml
> +++ b/protocol/wayland.xml
> @@ -1893,6 +1893,14 @@
>  	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"/>
> -- 
> 2.9.3
>