[gtk+/wip/cssnode3: 59/101] cssnode: Add gtk_css_node_invalidate_style_provider()

[Benjamin Otte <otte src gnome org>]

commit 1c8f9d27804925fe5ee1431bd362ed100b679efa
Author: Benjamin Otte <otte redhat com>
Date:   Tue Feb 17 16:11:38 2015 +0100

    cssnode: Add gtk_css_node_invalidate_style_provider()
    
    This function not just invalidates the current node, but also all
    children.

 gtk/gtkcssnode.c        |   19 +++++++++++++++++++
 gtk/gtkcssnodeprivate.h |    2 ++
 gtk/gtkstylecontext.c   |    2 +-
 3 files changed, 22 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkcssnode.c b/gtk/gtkcssnode.c
index d81f061..3a317cd 100644
--- a/gtk/gtkcssnode.c
+++ b/gtk/gtkcssnode.c
@@ -438,6 +438,9 @@ gtk_css_node_reposition (GtkCssNode *node,
         {
           gtk_css_node_parent_was_unset (node);
         }
+
+      if (gtk_css_node_get_style_provider_or_null (node) == NULL)
+        gtk_css_node_invalidate_style_provider (node);
     }
 
   if (parent)
@@ -737,6 +740,22 @@ gtk_css_node_get_declaration (GtkCssNode *cssnode)
 }
 
 void
+gtk_css_node_invalidate_style_provider (GtkCssNode *cssnode)
+{
+  GtkCssNode *child;
+
+  gtk_css_node_invalidate (cssnode, GTK_CSS_CHANGE_SOURCE);
+
+  for (child = cssnode->first_child;
+       child;
+       child = child->next_sibling)
+    {
+      if (gtk_css_node_get_style_provider_or_null (child) == NULL)
+        gtk_css_node_invalidate_style_provider (child);
+    }
+}
+
+void
 gtk_css_node_invalidate (GtkCssNode   *cssnode,
                          GtkCssChange  change)
 {
diff --git a/gtk/gtkcssnodeprivate.h b/gtk/gtkcssnodeprivate.h
index 8cfcd2a..7403cd3 100644
--- a/gtk/gtkcssnodeprivate.h
+++ b/gtk/gtkcssnodeprivate.h
@@ -139,6 +139,8 @@ void                    gtk_css_node_set_style          (GtkCssNode            *
                                                          GtkCssStyle           *style);
 GtkCssStyle *           gtk_css_node_create_style       (GtkCssNode            *cssnode);
 
+void                    gtk_css_node_invalidate_style_provider
+                                                        (GtkCssNode            *cssnode);
 void                    gtk_css_node_invalidate         (GtkCssNode            *cssnode,
                                                          GtkCssChange           change);
 void                    gtk_css_node_validate           (GtkCssNode            *cssnode,
diff --git a/gtk/gtkstylecontext.c b/gtk/gtkstylecontext.c
index 63dc7f0..907d2d7 100644
--- a/gtk/gtkstylecontext.c
+++ b/gtk/gtkstylecontext.c
@@ -289,7 +289,7 @@ static void
 gtk_style_context_cascade_changed (GtkStyleCascade *cascade,
                                    GtkStyleContext *context)
 {
-  gtk_css_node_invalidate (gtk_style_context_get_root (context), GTK_CSS_CHANGE_SOURCE);
+  gtk_css_node_invalidate_style_provider (gtk_style_context_get_root (context));
 }
 
 static void