Re: [Qemu-devel] [PATCH 22/23] gtk: show a window for each graphical QemuConsole

[Anthony Liguori <aliguori@us.ibm.com>]

Gerd Hoffmann <kraxel@redhat.com> writes:

> Multihead support:  For each graphical console we'll create a gtk
> window, so with multiple graphics cards installed you get a gtk window
> for each.  vte tabs are attached to the console #0 window.

This is neat but I'm not sure if the user experience is right.

Each window would have independent grab.  Each window would have
independent full screen.

I'm not sure there's an obviously right solution but it's worth
discussing.  I do like the idea of having two windows but perhaps we
should make the second window have a no menu bar with a title that
indicates that it's a secondary display?

Regards,

Anthony Liguori

> ---
>  ui/gtk.c |   40 +++++++++++++++++++++++++++-------------
>  1 file changed, 27 insertions(+), 13 deletions(-)
>
> diff --git a/ui/gtk.c b/ui/gtk.c
> index 512e974..1c86054 100644
> --- a/ui/gtk.c
> +++ b/ui/gtk.c
> @@ -159,8 +159,6 @@ typedef struct GtkDisplayState
>      bool external_pause_update;
>  } GtkDisplayState;
>  
> -static GtkDisplayState *global_state;
> -
>  /** Utility Functions **/
>  
>  static bool gd_is_grab_active(GtkDisplayState *s)
> @@ -1210,7 +1208,7 @@ static void gd_connect_signals(GtkDisplayState *s)
>                       G_CALLBACK(gd_leave_event), s);
>  }
>  
> -static void gd_create_menus(GtkDisplayState *s)
> +static void gd_create_menus(GtkDisplayState *s, bool vtetabs)
>  {
>      GtkStockItem item;
>      GtkAccelGroup *accel_group;
> @@ -1302,11 +1300,13 @@ static void gd_create_menus(GtkDisplayState *s)
>      gtk_accel_map_add_entry("<QEMU>/View/VGA", GDK_KEY_1, GDK_CONTROL_MASK | GDK_MOD1_MASK);
>      gtk_menu_shell_append(GTK_MENU_SHELL(s->view_menu), s->vga_item);
>  
> -    for (i = 0; i < nb_vcs; i++) {
> -        VirtualConsole *vc = &s->vc[i];
> +    if (vtetabs) {
> +        for (i = 0; i < nb_vcs; i++) {
> +            VirtualConsole *vc = &s->vc[i];
>  
> -        group = gd_vc_init(s, vc, i, group);
> -        s->nb_vcs++;
> +            group = gd_vc_init(s, vc, i, group);
> +            s->nb_vcs++;
> +        }
>      }
>  
>      separator = gtk_separator_menu_item_new();
> @@ -1336,14 +1336,13 @@ static const DisplayChangeListenerOps dcl_ops = {
>      .dpy_cursor_define = gd_cursor_define,
>  };
>  
> -void gtk_display_init(DisplayState *ds)
> +static void gtk_display_init_one(DisplayState *ds, QemuConsole *con,
> +                                 bool vtetabs)
>  {
>      GtkDisplayState *s = g_malloc0(sizeof(*s));
>  
> -    gtk_init(NULL, NULL);
> -
>      s->dcl.ops = &dcl_ops;
> -    s->dcl.con = qemu_console_lookup_by_index(0);
> +    s->dcl.con = con;
>  
>      s->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
>  #if GTK_CHECK_VERSION(3, 2, 0)
> @@ -1371,7 +1370,7 @@ void gtk_display_init(DisplayState *ds)
>  
>      gtk_notebook_append_page(GTK_NOTEBOOK(s->notebook), s->drawing_area, gtk_label_new("VGA"));
>  
> -    gd_create_menus(s);
> +    gd_create_menus(s, vtetabs);
>  
>      gd_connect_signals(s);
>  
> @@ -1400,6 +1399,21 @@ void gtk_display_init(DisplayState *ds)
>      gtk_widget_show_all(s->window);
>  
>      register_displaychangelistener(ds, &s->dcl);
> +}
>  
> -    global_state = s;
> +void gtk_display_init(DisplayState *ds)
> +{
> +    QemuConsole *con;
> +    int i = 0;
> +
> +    gtk_init(NULL, NULL);
> +
> +    con = qemu_console_lookup_by_index(i++);
> +    gtk_display_init_one(ds, con, true);
> +    while ((con = qemu_console_lookup_by_index(i++)) != NULL) {
> +        if (!qemu_console_is_graphic(con)) {
> +            break;
> +        }
> +        gtk_display_init_one(ds, con, false);
> +    }
>  }
> -- 
> 1.7.9.7