self NACK, I am sending a better version

Pavel

On Wed, 2015-04-29 at 15:46 +0200, Pavel Grunt wrote:
> When running in fullscreen it is possible to end up in a situation
> where we have more displays enabled than monitors. This can happen
> if displays that were enabled in the previous connection to the guest
> doesn't match displays requested when entering the fullscreen mode.
> 
> This commit solves the problem by disabling displays that should not
> enabled in the fullscreen mode.
> 
> Resolves: rhbz#1212802
> ---
> v1: https://www.redhat.com/archives/virt-tools-list/2015
> -April/msg00184.html
> v2: - nth is not used to determine which display should be enabled,
>       but the list of fullscreen displays is used
>     - the extra display is disabled instead of being ignored
> ---
>  src/virt-viewer-session-spice.c | 30 ++++++++++++++++++++++++++++++
>  1 file changed, 30 insertions(+)
> 
> diff --git a/src/virt-viewer-session-spice.c b/src/virt-viewer
> -session-spice.c
> index b69faa6..fe1fde1 100644
> --- a/src/virt-viewer-session-spice.c
> +++ b/src/virt-viewer-session-spice.c
> @@ -58,6 +58,7 @@ struct _VirtViewerSessionSpicePrivate {
>      gboolean has_sw_smartcard_reader;
>      guint pass_try;
>      gboolean did_auto_conf;
> +    GList *fullscreen_displays;
>  };
>  
>  #define VIRT_VIEWER_SESSION_SPICE_GET_PRIVATE(o) 
> (G_TYPE_INSTANCE_GET_PRIVATE((o), VIRT_VIEWER_TYPE_SESSION_SPICE, 
> VirtViewerSessionSpicePrivate))
> @@ -146,6 +147,7 @@ virt_viewer_session_spice_dispose(GObject *obj)
>      spice->priv->audio = NULL;
>  
>      g_clear_object(&spice->priv->main_window);
> +    g_list_free(spice->priv->fullscreen_displays);
>  
>      G_OBJECT_CLASS(virt_viewer_session_spice_parent_class)
> ->dispose(obj);
>  }
> @@ -693,6 +695,15 @@ destroy_display(gpointer data)
>      g_object_unref(display);
>  }
>  
> +static gboolean
> +display_is_in_fullscreen_mode(VirtViewerSessionSpice *self,
> +                              VirtViewerDisplay *display)
> +{
> +    gconstpointer nth = 
> GINT_TO_POINTER(virt_viewer_display_get_nth(display));
> +
> +    return g_list_index(self->priv->fullscreen_displays, nth) != -1;
> +}
> +
>  static void
>  virt_viewer_session_spice_display_monitors(SpiceChannel *channel,
>                                             GParamSpec *pspec 
> G_GNUC_UNUSED,
> @@ -702,6 +713,9 @@ 
> virt_viewer_session_spice_display_monitors(SpiceChannel *channel,
>      GPtrArray *displays = NULL;
>      GtkWidget *display;
>      guint i, monitors_max;
> +    gboolean fullscreen_mode =
> +       
>  virt_viewer_app_get_fullscreen(virt_viewer_session_get_app(VIRT_VIEW
> ER_SESSION(self)));
> +    gboolean disable_display = FALSE;
>  
>      g_object_get(channel,
>                   "monitors", &monitors,
> @@ -739,12 +753,26 @@ 
> virt_viewer_session_spice_display_monitors(SpiceChannel *channel,
>          if (monitor->width == 0 || monitor->height == 0)
>              continue;
>  
> +        if (fullscreen_mode && !display_is_in_fullscreen_mode(self, 
> VIRT_VIEWER_DISPLAY(display))) {
> +            g_debug("display %d should not be enabled, disabling",
> +                   
>  virt_viewer_display_get_nth(VIRT_VIEWER_DISPLAY(display)));
> +           
>  spice_main_set_display_enabled(virt_viewer_session_spice_get_main_ch
> annel(self),
> +                                          
>  virt_viewer_display_get_nth(VIRT_VIEWER_DISPLAY(display)),
> +                                           FALSE);
> +            disable_display = TRUE;
> +            continue;
> +        }
> +
>         
>  virt_viewer_display_set_enabled(VIRT_VIEWER_DISPLAY(display), TRUE);
>         
>  virt_viewer_display_spice_set_desktop(VIRT_VIEWER_DISPLAY(display),
>                                                monitor->x, monitor
> ->y,
>                                                monitor->width, 
> monitor->height);
>      }
>  
> +    if (disable_display) {
> +       
>  spice_main_send_monitor_config(virt_viewer_session_spice_get_main_ch
> annel(self));
> +    }
> +
>      g_clear_pointer(&monitors, g_array_unref);
>  
>  }
> @@ -879,6 +907,8 @@ 
> virt_viewer_session_spice_fullscreen_auto_conf(VirtViewerSessionSpice 
> *self)
>  
>      for (i = 0; i < ndisplays; i++) {
>          GdkRectangle *rect = &displays[i];
> +        self->priv->fullscreen_displays = g_list_append(self->priv
> ->fullscreen_displays,
> +                                                       
>  GINT_TO_POINTER(i));
>  
>          spice_main_set_display(cmain, i, rect->x, rect->y, rect
> ->width, rect->height);
>          spice_main_set_display_enabled(cmain, i, TRUE);

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