[gtk+] cssnode: Add gtk_css_node_reverse_children()

[Benjamin Otte <otte src gnome org>]

commit a7680c68de3cc5012ac7a63658c051f1771e8af9
Author: Benjamin Otte <otte redhat com>
Date:   Sun Jul 12 23:11:11 2015 +0200

    cssnode: Add gtk_css_node_reverse_children()

 gtk/gtkcssnode.c        |   15 +++++++++++++++
 gtk/gtkcssnodeprivate.h |    2 ++
 2 files changed, 17 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkcssnode.c b/gtk/gtkcssnode.c
index 8f1e4d9..9d76f2a 100644
--- a/gtk/gtkcssnode.c
+++ b/gtk/gtkcssnode.c
@@ -772,6 +772,21 @@ gtk_css_node_insert_before (GtkCssNode *parent,
                            next_sibling ? next_sibling->previous_sibling : parent->last_child);
 }
 
+void
+gtk_css_node_reverse_children (GtkCssNode *cssnode)
+{
+  GtkCssNode *end;
+
+  end = cssnode->last_child;
+  while (cssnode->first_child != end)
+    {
+      gtk_css_node_reposition (cssnode->first_child,
+                               cssnode,
+                               end);
+    }
+
+}
+
 GtkCssNode *
 gtk_css_node_get_parent (GtkCssNode *cssnode)
 {
diff --git a/gtk/gtkcssnodeprivate.h b/gtk/gtkcssnodeprivate.h
index ad606aa..cbed7e8 100644
--- a/gtk/gtkcssnodeprivate.h
+++ b/gtk/gtkcssnodeprivate.h
@@ -101,6 +101,8 @@ void                    gtk_css_node_insert_after       (GtkCssNode            *
 void                    gtk_css_node_insert_before      (GtkCssNode            *parent,
                                                          GtkCssNode            *cssnode,
                                                          GtkCssNode            *next_sibling);
+void                    gtk_css_node_reverse_children   (GtkCssNode            *cssnode);
+
 GtkCssNode *            gtk_css_node_get_parent         (GtkCssNode            *cssnode);
 GtkCssNode *            gtk_css_node_get_first_child    (GtkCssNode            *cssnode);
 GtkCssNode *            gtk_css_node_get_last_child     (GtkCssNode            *cssnode);