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On 01/19/10 20:09, Tristan Schmelcher wrote:
> Thanks Kevin! I'm trying out your suggestion and I've got the GtkWindow
> hooking up to the foreign GdkWindow properly, but it looks like I still
> get the same X server error when trying to draw after the browser
> destroys the GtkSocket's window, and I still can't find a signal/event
> that gets dispatched when that happens. :( e.g., delete, destroy,
> reparent, unmap, and unrealize are not dispatched. Do you remember if
> there was a particular event that you listened for to handle this case?
>
I think I am hooking see line 5982 in gui.c in gnome-mplayer
delete_signal_id =
g_signal_connect(GTK_OBJECT(window), "delete_event",
G_CALLBACK(delete_callback), NULL);
and I also have function called from the class destructor that tells my
application to quit (calls "shut()" line 382 in plugin.ccp).
The source code to gecko-mediaplayer (the browser plugin) is here:
http://code.google.com/p/gecko-mediaplayer/source/checkout
And the source to gnome-mplayer is here
http://code.google.com/p/gnome-mplayer/source/checkout
Kevin
> On 15 January 2010 16:08, Kevin DeKorte <kdeko...@gmail.com
> <mailto:kdeko...@gmail.com>> wrote:
>
> On 01/15/10 16:51, Tristan Schmelcher wrote:
>> Hello,
>
>> I'm a novice Gtk app developer writing a plugin for Firefox and I'm
>> having trouble getting the callbacks that I need from Gtk/Gdk. The way
>> the plugin architecture works is that Firefox creates a GtkSocket and
>> my plugin gets passed its XID and creates the corresponding GtkPlug
>> (in the same process). By and large everything works, except at
>> shutdown. In some cases, Firefox happens to do a gdk_window_destroy()
>> on one of the parent windows of the GtkSocket before unloading my
>> plugin (for example, when closing a tab with the 'X'). That
>> recursively destroys everything down to the GtkSocket and also the
>> GtkPlug in _gdk_window_destroy_hierarchy(
>> ). So when I try to access the underlying X11 Window handle after this
>> I get an error from the X server and the program aborts. :(
>
>> What I'd like to do is receive a signal from Gtk/Gdk when the
>> GdkWindow inside my GtkPlug is destroyed like this so that I can
>> cancel any further rendering actions. But I can't figure out how to
>> receive a signal when this happens! AFAICT none of the GtkPlug signals
>> or its inherited GtkWidget signals are dispatched when this happens.
>
>> Any ideas?
>
> Tristan,
>
> I've had this same problem when developing
> gecko-mediaplayer/gnome-mplayer and mplayerplug-in. I was never able to
> fully use the GtkPlug interface. It just didn't work the way I needed it
> to.
>
> What I ended up doing is creating a normal toplevel window and then
> embedding it in the window that firefox gave me..
>
> Something like this where windowid is the xid I get from firefox.
>
>
>
> window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
>
> if (windowid > 0 && embedding_disabled == FALSE) {
> gtk_window_set_decorated(GTK_WINDOW(window), FALSE);
> GTK_WIDGET_SET_FLAGS(window, GTK_CAN_FOCUS);
> }
>
>
> if (windowid != 0 && embedding_disabled == FALSE) {
> while (gtk_events_pending())
> gtk_main_iteration();
>
> window_container = gdk_window_foreign_new(windowid);
> if (GTK_WIDGET_MAPPED(window))
> gtk_widget_unmap(window);
>
> gdk_window_reparent(window->window, window_container, 0, 0);
> }
>
>
> Hope that helps.
>
> Kevin
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