gtksink: Fetch the default "widget" value in the docs

There's really no interesting "widget" value that could be shown in the
docs, so use the GST_PARAM_DOC_SHOW_DEFAULT flag to avoid showing
another value.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1088>

diff --git a/subprojects/gst-plugins-good/ext/gtk/gstgtkbasesink.c b/subprojects/gst-plugins-good/ext/gtk/gstgtkbasesink.c
index 73a9439..3005024 100644 (file)
--- a/subprojects/gst-plugins-good/ext/gtk/gstgtkbasesink.c
+++ b/subprojects/gst-plugins-good/ext/gtk/gstgtkbasesink.c
@@ -100,7 +100,9 @@ gst_gtk_base_sink_class_init (GstGtkBaseSinkClass * klass)
       g_param_spec_object ("widget", "Gtk Widget",
           "The GtkWidget to place in the widget hierarchy "
           "(must only be get from the GTK main thread)",
-          GTK_TYPE_WIDGET, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+          GTK_TYPE_WIDGET,
+          G_PARAM_READABLE | G_PARAM_STATIC_STRINGS |
+          GST_PARAM_DOC_SHOW_DEFAULT));
 
   g_object_class_install_property (gobject_class, PROP_FORCE_ASPECT_RATIO,
       g_param_spec_boolean ("force-aspect-ratio",