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gtksink: Create a window if the widget is unparented

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The same way as it's now done with the gtkglsink, create a top
level window if the widget is not parented.

https://bugzilla.gnome.org/show_bug.cgi?id=751104
This commit is contained in:
Nicolas Dufresne 2015-07-15 16:56:33 -04:00
parent dae8008d8b
commit 4be2229ba6
1 changed files with 28 additions and 1 deletions
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29
ext/gtk/gstgtksink.c
View file

@ -159,11 +159,19 @@ gst_gtk_sink_finalize (GObject * object)
{
GstGtkSink *gtk_sink = GST_GTK_SINK (object);;
g_object_unref (gtk_sink->widget);
g_clear_object (&gtk_sink->widget);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
widget_destroy_cb (GtkWidget * widget, GstGtkSink * gtk_sink)
{
GST_OBJECT_LOCK (gtk_sink);
g_clear_object (&gtk_sink->widget);
GST_OBJECT_UNLOCK (gtk_sink);
}
static GtkGstWidget *
gst_gtk_sink_get_widget (GstGtkSink * gtk_sink)
{
@ -191,6 +199,8 @@ gst_gtk_sink_get_widget (GstGtkSink * gtk_sink)
/* Take the floating ref, other wise the destruction of the container will
* make this widget disapear possibly before we are done. */
gst_object_ref_sink (gtk_sink->widget);
g_signal_connect (gtk_sink->widget, "destroy",
G_CALLBACK (widget_destroy_cb), gtk_sink);
return gtk_sink->widget;
}
@ -268,6 +278,7 @@ gst_gtk_sink_change_state (GstElement * element, GstStateChange transition)
{
GstGtkSink *gtk_sink = GST_GTK_SINK (element);
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GtkWidget *toplevel;
GST_DEBUG ("changing state: %s => %s",
gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
@ -277,6 +288,22 @@ gst_gtk_sink_change_state (GstElement * element, GstStateChange transition)
case GST_STATE_CHANGE_NULL_TO_READY:
if (gst_gtk_sink_get_widget (gtk_sink) == NULL)
return GST_STATE_CHANGE_FAILURE;
/* After this point, gtk_sink->widget will always be set */
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (gtk_sink->widget));
if (!gtk_widget_is_toplevel (toplevel)) {
GtkWidget *window;
/* User did not add widget its own UI, let's popup a new GtkWindow to
* make gst-launch-1.0 work. */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size (GTK_WINDOW (window), 640, 480);
gtk_window_set_title (GTK_WINDOW (window), "Gtk+ Cairo renderer");
gtk_container_add (GTK_CONTAINER (window), toplevel);
gtk_widget_show_all (window);
}
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
break;