[gtk+/wip/attachment-rectangle: 9/10] mir: implement gdk_mir_window_impl_get_frame_extents ()

[William Hua <williamhua src gnome org>]

commit 21bea4d30578a42eec46067fb019654ec731d261
Author: William Hua <william hua canonical com>
Date:   Fri Jul 24 23:46:31 2015 -0400

    mir: implement gdk_mir_window_impl_get_frame_extents ()

 gdk/mir/gdkmirwindowimpl.c |   18 +++++++++++++++++-
 1 files changed, 17 insertions(+), 1 deletions(-)
---
diff --git a/gdk/mir/gdkmirwindowimpl.c b/gdk/mir/gdkmirwindowimpl.c
index 7b0cad7..c13f3b5 100644
--- a/gdk/mir/gdkmirwindowimpl.c
+++ b/gdk/mir/gdkmirwindowimpl.c
@@ -925,7 +925,23 @@ static void
 gdk_mir_window_impl_get_frame_extents (GdkWindow    *window,
                                        GdkRectangle *rect)
 {
-  //g_printerr ("gdk_mir_window_impl_get_frame_extents window=%p\n", window);
+  GdkMirWindowImpl *impl = GDK_MIR_WINDOW_IMPL (window->impl);
+
+  if (!rect)
+    return;
+
+  rect->x = 0;
+  rect->y = 0;
+  rect->width = window->width;
+  rect->height = window->height;
+
+  while (impl->transient_for)
+    {
+      rect->x += impl->transient_x;
+      rect->y += impl->transient_y;
+      window = impl->transient_for;
+      impl = GDK_MIR_WINDOW_IMPL (window->impl);
+    }
 }
 
 static void