Re: [PATCH] ui/gtk: mon_num parameter to specify target monitor for launching Qemu

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 11/18/21 23:51, Dongwon Kim wrote:
> Introducing a new integer parameter to specify the monitor where the
> Qemu window is placed upon launching.
> 
> Monitor index can start from 0 to (total number of monitors - 1).
> Default value for the parameter is -1, which doesn't affect anything.
> 
> It can be used together with full-screen=on, which will make the Qemu

"QEMU"

> window full-screened on the targetted monitor.

Typo "targeted"

> Cc: Gerd Hoffmann <kraxel@redhat.com>
> Cc: Vivek Kasireddy <vivek.kasireddy@intel.com>
> Cc: sweeaun <swee.aun.khor@intel.com>
> Cc: Khairul Anuar Romli <khairul.anuar.romli@intel.com>
> Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
> ---
>  qapi/ui.json    |  7 ++++++-
>  qemu-options.hx |  2 +-
>  ui/gtk.c        | 10 ++++++++++
>  3 files changed, 17 insertions(+), 2 deletions(-)
> 
> diff --git a/qapi/ui.json b/qapi/ui.json
> index d7567ac866..7552b503b2 100644
> --- a/qapi/ui.json
> +++ b/qapi/ui.json
> @@ -1099,13 +1099,18 @@
>  #               assuming the guest will resize the display to match
>  #               the window size then.  Otherwise it defaults to "off".
>  #               Since 3.1
> +# @mon-num:     Indicate monitor where Qemu window is lauched. mon-num
> +#               could be any number from -1 to (total num of monitors - 1).
> +#               (default: -1: use default monitor)
> +#               since 6.2

I believe this is 7.0 material now, so "since 7.0".

>  #
>  # Since: 2.12
>  #
>  ##
>  { 'struct'  : 'DisplayGTK',
>    'data'    : { '*grab-on-hover' : 'bool',
> -                '*zoom-to-fit'   : 'bool'  } }
> +                '*zoom-to-fit'   : 'bool',
> +                '*mon-num'       : 'int' } }
>  
>  ##
>  # @DisplayEGLHeadless:
> diff --git a/qemu-options.hx b/qemu-options.hx
> index 7749f59300..7a888b16b1 100644
> --- a/qemu-options.hx
> +++ b/qemu-options.hx
> @@ -1852,7 +1852,7 @@ DEF("display", HAS_ARG, QEMU_OPTION_display,
>  #endif
>  #if defined(CONFIG_GTK)
>      "-display gtk[,full-screen=on|off][,gl=on|off][,grab-on-hover=on|off]\n"
> -    "            [,show-cursor=on|off][,window-close=on|off]\n"
> +    "            [,mon-num=<value>][,show-cursor=on|off][,window-close=on|off]\n"
>  #endif
>  #if defined(CONFIG_VNC)
>      "-display vnc=<display>[,<optargs>]\n"
> diff --git a/ui/gtk.c b/ui/gtk.c
> index d2892ea6b4..8d8aa55822 100644
> --- a/ui/gtk.c
> +++ b/ui/gtk.c
> @@ -2314,6 +2314,16 @@ static void gtk_display_init(DisplayState *ds, DisplayOptions *opts)
>                               vc && vc->type == GD_VC_VTE);
>  #endif
>  
> +    if (opts->u.gtk.has_mon_num && opts->u.gtk.mon_num &&
> +        opts->u.gtk.mon_num >= 0) {
> +        GdkRectangle mon_dest;
> +        if (opts->u.gtk.mon_num < gdk_display_get_n_monitors(window_display)) {
> +            gdk_monitor_get_geometry(
> +                gdk_display_get_monitor(window_display, opts->u.gtk.mon_num),
> +                &mon_dest);
> +            gtk_window_move(GTK_WINDOW(s->window), mon_dest.x, mon_dest.y);
> +        }
> +    }
>      if (opts->has_full_screen &&
>          opts->full_screen) {
>          gtk_menu_item_activate(GTK_MENU_ITEM(s->full_screen_item));
>