Re: [PATCH spice-gtk] vncdisplaykeymap: Add support for Xwayland keymap

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----- Original Message -----
> From: "Daniel P. Berrange" <berrange@xxxxxxxxxx>
> 
> Both Wayland and Xwayland use the evdev + 8 map for keycodes,
> just as regular Xorg with evdev does.
> 
> This code is copied from gtk-vnc.
> 
> Fixes https://bugs.freedesktop.org/show_bug.cgi?id=89105
> ---
>  gtk/vncdisplaykeymap.c | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/gtk/vncdisplaykeymap.c b/gtk/vncdisplaykeymap.c
> index 340a86f..32fdac5 100644
> --- a/gtk/vncdisplaykeymap.c
> +++ b/gtk/vncdisplaykeymap.c
> @@ -12,6 +12,7 @@
>  #include <gtk/gtk.h>
>  #include <gdk/gdk.h>
>  #include <gdk/gdkkeysyms.h>
> +#include <stdlib.h>
>  #include "gtk-compat.h"
>  #include "vncdisplaykeymap.h"
>  
> @@ -156,6 +157,17 @@ static gboolean check_for_xquartz(GdkDisplay *dpy)
>  
>  	return match;
>  }
> +
> +static gboolean check_for_xwayland(GdkDisplay *dpy G_GNUC_UNUSED)
> +{
> +	/* There is no obvious extension name or root window property
> +	 * that identifies as Xwayland. It also does not report any
> +	 * XKB info. So this env var check is least-worst option left
> +	 */
> +	char *dpystr = getenv("WAYLAND_DISPLAY");
> +
> +	return dpystr != NULL;
> +}
>  #endif
>  
>  const guint16 *vnc_display_keymap_gdk2xtkbd_table(GdkWindow *window,
> @@ -195,6 +207,10 @@ const guint16
> *vnc_display_keymap_gdk2xtkbd_table(GdkWindow *window,
>  			VNC_DEBUG("Using xquartz keycode mapping");
>  			*maplen = G_N_ELEMENTS(keymap_xorgxquartz2xtkbd);
>  			return keymap_xorgxquartz2xtkbd;
> +		} else if (check_for_xwayland(dpy)) {
> +			VNC_DEBUG("Using wayland evdec keycode mapping");
> +			*maplen = G_N_ELEMENTS(keymap_xorgevdev2xtkbd);
> +			return keymap_xorgevdev2xtkbd;
>  		} else if (keycodes && STRPREFIX(keycodes, "evdev_")) {
>  			VNC_DEBUG("Using evdev keycode mapping");
>  			*maplen = G_N_ELEMENTS(keymap_xorgevdev2xtkbd);
> --
> 2.3.0

We already have wayland input support since:

commit 577263aaf4cffe260e31d19eb4b8bca1c253eff3
Author: Marc-André Lureau <marcandre.lureau@xxxxxxxxxx>
Date:   Mon May 13 01:11:07 2013 +0200

    vncdisplaykeymap: add wayland support
    
    The Wayland keycode are just Linux evdev, but the Gdk backend
    add the +8 offset used by Xorg evdev.


Not sure about XWayland, but I would assume this was enough, and didn't rely on a not so reliable environment variable.
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