LinGui: fix possible live preview failure with gtk 2.18

according to the doc's you must call gdk_window_ensure_native() before
getting the X11 XID for the window.  this is the only way to guarantee
that the window is native and has an XID.

git-svn-id: svn://localhost/HandBrake/trunk@3249 b64f7644-9d1e-0410-96f1-a4d463321fa5

diff --git a/gtk/src/preview.c b/gtk/src/preview.c
index 4ed717b..fc713f6 100644 (file)
--- a/gtk/src/preview.c
+++ b/gtk/src/preview.c
@@ -164,6 +164,18 @@ ghb_preview_init(signal_user_data_t *ud)
        GstBus *bus;
        GstElement *xover;
 
+#if GTK_CHECK_VERSION(2,18,0)
+       if (!gdk_window_ensure_native(ud->preview->view->window))
+       {
+               g_message("Couldn't create native window for GstXOverlay. Disabling live preview.");
+               GtkWidget *widget = GHB_WIDGET(ud->builder, "live_preview_box");
+               gtk_widget_hide (widget);
+               widget = GHB_WIDGET(ud->builder, "live_preview_duration_box");
+               gtk_widget_hide (widget);
+               return;
+       }
+#endif
+
 #if !defined(_WIN32)
        ud->preview->xid = GDK_DRAWABLE_XID(ud->preview->view->window);
 #else
@@ -175,6 +187,7 @@ ghb_preview_init(signal_user_data_t *ud)
        xover = gst_element_factory_make("gconfvideosink", "xover");
        if (ud->preview->play == NULL || xover == NULL)
        {
+               g_message("Couldn't initialize gstreamer. Disabling live preview.");
                GtkWidget *widget = GHB_WIDGET(ud->builder, "live_preview_box");
                gtk_widget_hide (widget);
                widget = GHB_WIDGET(ud->builder, "live_preview_duration_box");