bug#31223: [PATCH] Fix empty/incorrect GTK menus on HiDPI monitors with window scaling factor > 1

[Eli Zaretskii]

> From: Robert Pluim <rpluim@gmail.com>
> Cc: 31223@debbugs.gnu.org,  tbading@web.de
> Date: Tue, 07 Jan 2020 17:15:04 +0100
> 
> >>>>> On Tue, 17 Dec 2019 15:43:50 +0100, Robert Pluim <rpluim@gmail.com> 
> >>>>> said:
>     Robert> diff --git a/src/xfns.c b/src/xfns.c
>     Robert> index 47aa19607f..51a46bd6db 100644
>     Robert> --- a/src/xfns.c
>     Robert> +++ b/src/xfns.c
>     Robert> @@ -5091,6 +5091,8 @@ DEFUN ("x-display-monitor-attributes-list", 
> Fx_display_monitor_attributes_list,
>     Robert>  #elif defined HAVE_GTK3
>     Robert>        scale = gdk_screen_get_monitor_scale_factor (gscreen, i);
>     Robert>  #endif
>     Robert> +      rec.x *= scale;
>     Robert> +      rec.y *= scale;
>     Robert>        rec.width *= scale;
>     Robert>        rec.height *= scale;
>     Robert>        work.x *= scale;
> 
> Eli, is this OK for emacs-27? It will only affect
> display-monitor-attributes-list for people using GTK on multiple
> monitors where one is HiDPI.

Yes, please push to emacs-27, and thanks.