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examples: make seek example work with Gtk+ >= 2.18

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Gtk+ broke API slightly with the introduction of
client-side windows in Gtk+ 2.18. Fix up seek
example to work with newer Gtk+ versions.

Fixes #601809.
This commit is contained in:
Tim-Philipp Müller 2009-12-29 00:40:27 +00:00
parent 234b18965d
commit f82ac8bf44
1 changed files with 39 additions and 8 deletions
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47
tests/examples/seek/seek.c
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@ -2391,8 +2391,13 @@ msg_clock_lost (GstBus * bus, GstMessage * message, GstPipeline * data)
#ifdef HAVE_X
static guint embed_xid = 0;
static gulong embed_xid = 0;
/* We set the xid here in response to the prepare-xwindow-id message via a
* bus sync handler because we don't know the actual videosink used from the
* start (as we don't know the pipeline, or bin elements such as autovideosink
* or gconfvideosink may be used which create the actual videosink only once
* the pipeline is started) */
static GstBusSyncReply
bus_sync_handler (GstBus * bus, GstMessage * message, GstPipeline * data)
{
@ -2400,18 +2405,21 @@ bus_sync_handler (GstBus * bus, GstMessage * message, GstPipeline * data)
gst_structure_has_name (message->structure, "prepare-xwindow-id")) {
GstElement *element = GST_ELEMENT (GST_MESSAGE_SRC (message));
g_print ("got prepare-xwindow-id\n");
if (!embed_xid) {
embed_xid = GDK_WINDOW_XID (GDK_WINDOW (video_window->window));
}
g_print ("got prepare-xwindow-id, setting XID %lu\n", embed_xid);
if (g_object_class_find_property (G_OBJECT_GET_CLASS (element),
"force-aspect-ratio")) {
g_object_set (element, "force-aspect-ratio", TRUE, NULL);
}
gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (GST_MESSAGE_SRC (message)),
embed_xid);
/* Should have been initialised from main thread before (can't use
* GDK_WINDOW_XID here with Gtk+ >= 2.18, because the sync handler will
* be called from a streaming thread and GDK_WINDOW_XID maps to more than
* a simple structure lookup with Gtk+ >= 2.18, where 'more' is stuff that
* shouldn't be done from a non-GUI thread without explicit locking). */
g_assert (embed_xid != 0);
gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (element), embed_xid);
}
return GST_BUS_PASS;
}
@ -2427,6 +2435,19 @@ handle_expose_cb (GtkWidget * widget, GdkEventExpose * event, gpointer data)
return FALSE;
}
static void
realize_cb (GtkWidget * widget, gpointer data)
{
/* This is here just for pedagogical purposes, GDK_WINDOW_XID will call it
* as well */
if (!gdk_window_ensure_native (widget->window))
g_error ("Couldn't create native window needed for GstXOverlay!");
#ifdef HAVE_X
embed_xid = GDK_WINDOW_XID (video_window->window);
g_print ("Window realize: video window XID = %lu\n", embed_xid);
#endif
}
static void
msg_eos (GstBus * bus, GstMessage * message, GstPipeline * data)
@ -2623,9 +2644,11 @@ main (int argc, char **argv)
/* initialize gui elements ... */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
video_window = gtk_drawing_area_new ();
g_signal_connect (G_OBJECT (video_window), "expose-event",
g_signal_connect (video_window, "expose-event",
G_CALLBACK (handle_expose_cb), NULL);
g_signal_connect (video_window, "realize", G_CALLBACK (realize_cb), NULL);
gtk_widget_set_double_buffered (video_window, FALSE);
statusbar = gtk_statusbar_new ();
status_id = gtk_statusbar_get_context_id (GTK_STATUSBAR (statusbar), "seek");
gtk_statusbar_push (GTK_STATUSBAR (statusbar), status_id, "Stopped");
@ -2891,6 +2914,14 @@ main (int argc, char **argv)
/* show the gui. */
gtk_widget_show_all (window);
/* realize window now so that the video window gets created and we can
* obtain its XID before the pipeline is started up and the videosink
* asks for the XID of the window to render onto */
gtk_widget_realize (window);
/* we should have the XID now */
g_assert (embed_xid != 0);
if (verbose) {
g_signal_connect (pipeline, "deep_notify",
G_CALLBACK (gst_object_default_deep_notify), NULL);