wayland: Add API for creating exported window handles

Using the xdg_foreign protocol, expose a way to get handles to windows
that may be shared between processes.

https://bugzilla.gnome.org/show_bug.cgi?id=769788

1 files changed, 12 insertions, 0 deletions

diff --git a/gdk/wayland/gdkwaylandwindow.h b/gdk/wayland/gdkwaylandwindow.h
index e46ce18d79..6c006e80a7 100644
--- a/gdk/wayland/gdkwaylandwindow.h
+++ b/gdk/wayland/gdkwaylandwindow.h
@@ -60,6 +60,18 @@ void                     gdk_wayland_window_set_dbus_properties_libgtk_only (Gdk
 									     const char *application_object_path,
 									     const char *unique_bus_name);
 
+typedef void (*GdkWaylandWindowExported) (GdkWindow  *window,
+                                          const char *handle,
+                                          gpointer    user_data);
+
+GDK_AVAILABLE_IN_3_22
+gboolean                 gdk_wayland_window_export_handle (GdkWindow               *window,
+                                                           GdkWaylandWindowExported callback,
+                                                           gpointer                 user_data,
+                                                           GDestroyNotify           destroy_func);
+
+GDK_AVAILABLE_IN_3_22
+void                     gdk_wayland_window_unexport_handle (GdkWindow *window);
 
 G_END_DECLS