pepper: APIs for accessing root views of a compositor

These APIs are required for users to be able to traverse the view tree.

Change-Id: Icbd188a37ec5dca28a15a9d90182386163b27762

diff --git a/pepper/src/pepper.h b/pepper/src/pepper.h
index bd83c4f..f8935d7 100644 (file)
--- a/pepper/src/pepper.h
+++ b/pepper/src/pepper.h
@@ -340,6 +340,12 @@ PEPPER_API pepper_view_t *
 pepper_compositor_add_view(pepper_compositor_t *compositor,
                            pepper_view_t *parent, pepper_view_t *pos, pepper_surface_t *surface);
 
+PEPPER_API pepper_view_t *
+pepper_compositor_get_top_root_view(pepper_compositor_t *compositor);
+
+PEPPER_API pepper_view_t *
+pepper_compositor_get_bottom_root_view(pepper_compositor_t *compositor);
+
 PEPPER_API void
 pepper_view_destroy(pepper_view_t *view);
 

diff --git a/pepper/src/view.c b/pepper/src/view.c
index 4d5bd66..de1ed2c 100644 (file)
--- a/pepper/src/view.c
+++ b/pepper/src/view.c
@@ -67,6 +67,24 @@ pepper_compositor_add_view(pepper_compositor_t *compositor,
     return view;
 }
 
+PEPPER_API pepper_view_t *
+pepper_compositor_get_top_root_view(pepper_compositor_t *compositor)
+{
+    if (wl_list_empty(&compositor->root_view_list))
+        return NULL;
+
+    return pepper_container_of(compositor->root_view_list.prev, pepper_view_t, parent_link);
+}
+
+PEPPER_API pepper_view_t *
+pepper_compositor_get_bottom_root_view(pepper_compositor_t *compositor)
+{
+    if (wl_list_empty(&compositor->root_view_list))
+        return NULL;
+
+    return pepper_container_of(compositor->root_view_list.next, pepper_view_t, parent_link);
+}
+
 PEPPER_API void
 pepper_view_destroy(pepper_view_t *view)
 {