Check for XFIXES extension.

Check for XFIXES extension.

2004-05-18  Matthias Clasen  <mclasen@redhat.com>

	* configure.in: Check for XFIXES extension.

	* gdk/x11/gdkdisplay-x11.h (struct _GdkDisplayX11): Add
	a gboolean have_xfixes member.

	* gdk/x11/gdkdisplay-x11.c (gdk_display_open): Register
	XFIXES events and set have_xfixes.

	* gdk/gdkevents.h (GdkEventType): Add GDK_OWNER_CHANGE.
	(GdkEventOwnerChange): New event struct for owner change events.
	(GdkOwnerChange): New enum for the reason field of GdkEventOwnerChange.

	* gdk/x11/gdkevents-x11.c (gdk_event_translate): Translate
	XFixesSelectionNotify events into GdkEventOwnerChange events.

	* gdk/gdkdisplay.h:
	* gdk/x11/gdkdisplay-x11.c (gdk_display_supports_selection_notification):
	(gdk_display_request_selection_notification): New api
	to support selection ownership notification.

	* gtk/gtkclipboard.h:
	* gtk/gtkclipboard.c (_gtk_clipboard_handle_event): New private
	api to handle owner change events.
	(clipboard_peek): Refactored out the body of
	gtk_clipboard_get_for_display() for use in _gtk_clipboard_handle_event().

	* gtk/gtkmain.c (gtk_main_do_event): Handle GDK_OWNER_CHANGE events
	by calling _gtk_clipboard_handle_event().