Index: uspace/lib/gfx/include/gfx/coord.h
===================================================================
--- uspace/lib/gfx/include/gfx/coord.h	(revision 0d62c10a4e92097fe235df71e74a4c547e7e9d71)
+++ uspace/lib/gfx/include/gfx/coord.h	(revision db3c6795e784ae1634ae0880b340ff7c83f110ef)
@@ -52,4 +52,5 @@
 extern void gfx_rect_envelope(gfx_rect_t *, gfx_rect_t *, gfx_rect_t *);
 extern void gfx_rect_clip(gfx_rect_t *, gfx_rect_t *, gfx_rect_t *);
+extern void gfx_rect_ctr_on_rect(gfx_rect_t *, gfx_rect_t *, gfx_rect_t *);
 extern void gfx_rect_points_sort(gfx_rect_t *, gfx_rect_t *);
 extern void gfx_rect_dims(gfx_rect_t *, gfx_coord2_t *);