screen-cast/stream: Add 'is-configured' property

When this is TRUE, it has a size, position etc. Only virtual streams do
this asynchronously, as they go via monitor configuration after being
created.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3241>

src/backends/meta-screen-cast-area-stream.c

@@ -110,6 +110,7 @@ meta_screen_cast_area_stream_new (MetaScreenCastSession     *session,
                                 "connection", connection,
                                 "cursor-mode", cursor_mode,
                                 "flags", flags,
+                                "is-configured", TRUE,
                                 NULL);
   if (!area_stream)
     return NULL;

src/backends/meta-screen-cast-monitor-stream.c

@@ -134,6 +134,7 @@ meta_screen_cast_monitor_stream_new (MetaScreenCastSession     *session,
                                    "connection", connection,
                                    "cursor-mode", cursor_mode,
                                    "flags", flags,
+                                   "is-configured", TRUE,
                                    "monitor", monitor,
                                    NULL);
   if (!monitor_stream)

src/backends/meta-screen-cast-stream.c

@@ -38,6 +38,7 @@ enum
   PROP_CONNECTION,
   PROP_CURSOR_MODE,
   PROP_FLAGS,
+  PROP_IS_CONFIGURED,
 
   N_PROPS
 };
@@ -62,6 +63,7 @@ typedef struct _MetaScreenCastStreamPrivate
 
   MetaScreenCastCursorMode cursor_mode;
   MetaScreenCastFlag flags;
+  gboolean is_configured;
 
   MetaScreenCastStreamSrc *src;
 
@@ -233,6 +235,25 @@ meta_screen_cast_stream_get_mapping_id (MetaScreenCastStream *stream)
   return priv->mapping_id;
 }
 
+gboolean
+meta_screen_cast_stream_is_configured (MetaScreenCastStream *stream)
+{
+  MetaScreenCastStreamPrivate *priv =
+    meta_screen_cast_stream_get_instance_private (stream);
+
+  return priv->is_configured;
+}
+
+void
+meta_screen_cast_stream_notify_is_configured (MetaScreenCastStream *stream)
+{
+  MetaScreenCastStreamPrivate *priv =
+    meta_screen_cast_stream_get_instance_private (stream);
+
+  priv->is_configured = TRUE;
+  g_object_notify_by_pspec (G_OBJECT (stream), obj_props[PROP_IS_CONFIGURED]);
+}
+
 static void
 meta_screen_cast_stream_set_property (GObject      *object,
                                       guint         prop_id,
@@ -257,6 +278,9 @@ meta_screen_cast_stream_set_property (GObject      *object,
     case PROP_FLAGS:
       priv->flags = g_value_get_flags (value);
       break;
+    case PROP_IS_CONFIGURED:
+      priv->is_configured = g_value_get_boolean (value);
+      break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
     }
@@ -286,6 +310,9 @@ meta_screen_cast_stream_get_property (GObject    *object,
     case PROP_FLAGS:
       g_value_set_flags (value, priv->flags);
       break;
+    case PROP_IS_CONFIGURED:
+      g_value_set_boolean (value, priv->is_configured);
+      break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
     }
@@ -459,6 +486,12 @@ meta_screen_cast_stream_class_init (MetaScreenCastStreamClass *klass)
                         G_PARAM_READWRITE |
                         G_PARAM_CONSTRUCT_ONLY |
                         G_PARAM_STATIC_STRINGS);
+  obj_props[PROP_IS_CONFIGURED] =
+    g_param_spec_boolean ("is-configured", NULL, NULL,
+                          FALSE,
+                          G_PARAM_READWRITE |
+                          G_PARAM_CONSTRUCT |
+                          G_PARAM_STATIC_STRINGS);
   g_object_class_install_properties (object_class, N_PROPS, obj_props);
 
   signals[CLOSED] = g_signal_new ("closed",

src/backends/meta-screen-cast-stream.h

@@ -69,3 +69,7 @@ MetaScreenCastCursorMode meta_screen_cast_stream_get_cursor_mode (MetaScreenCast
 MetaScreenCastFlag meta_screen_cast_stream_get_flags (MetaScreenCastStream *stream);
 
 const char * meta_screen_cast_stream_get_mapping_id (MetaScreenCastStream *stream);
+
+gboolean meta_screen_cast_stream_is_configured (MetaScreenCastStream *stream);
+
+void meta_screen_cast_stream_notify_is_configured (MetaScreenCastStream *stream);

src/backends/meta-screen-cast-virtual-stream-src.c

@@ -283,6 +283,8 @@ init_record_callbacks (MetaScreenCastVirtualStreamSrc *virtual_src)
       break;
     }
 
+  meta_screen_cast_stream_notify_is_configured (stream);
+
   if (meta_screen_cast_stream_get_cursor_mode (stream) ==
       META_SCREEN_CAST_CURSOR_MODE_EMBEDDED)
     inhibit_hw_cursor (virtual_src);