[gtk+] Hide GtkTreeViewColumn buttons when header_window is not visible

[Kristian Rietveld <kristian src gnome org>]

commit 31536736ea0fe25056689b9b7ccd914910281b37
Author: Kristian Rietveld <kris gtk org>
Date:   Thu Dec 23 18:19:11 2010 +0100

    Hide GtkTreeViewColumn buttons when header_window is not visible

 gtk/gtktreeview.c       |    5 +++++
 gtk/gtktreeviewcolumn.c |    7 +++----
 2 files changed, 8 insertions(+), 4 deletions(-)
---
diff --git a/gtk/gtktreeview.c b/gtk/gtktreeview.c
index bce916a..e9f64e2 100644
--- a/gtk/gtktreeview.c
+++ b/gtk/gtktreeview.c
@@ -2128,6 +2128,9 @@ gtk_tree_view_map_buttons (GtkTreeView *tree_view)
 	  column = list->data;
 	  button = gtk_tree_view_column_get_button (column);
 
+          if (gtk_tree_view_column_get_visible (column) && button)
+            gtk_widget_show_now (button);
+
           if (gtk_widget_get_visible (button) &&
               !gtk_widget_get_mapped (button))
             gtk_widget_map (button);
@@ -11631,6 +11634,8 @@ gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
 	    {
 	      column = list->data;
 	      button = gtk_tree_view_column_get_button (column);
+
+              gtk_widget_hide (button);
 	      gtk_widget_unmap (button);
 	    }
 	  gdk_window_hide (tree_view->priv->header_window);
diff --git a/gtk/gtktreeviewcolumn.c b/gtk/gtktreeviewcolumn.c
index 0147a4a..43f5921 100644
--- a/gtk/gtktreeviewcolumn.c
+++ b/gtk/gtktreeviewcolumn.c
@@ -987,7 +987,9 @@ gtk_tree_view_column_update_button (GtkTreeViewColumn *tree_column)
     {
       if (priv->visible)
 	{
-	  gtk_widget_show_now (priv->button);
+          if (gdk_window_is_visible (_gtk_tree_view_get_header_window (GTK_TREE_VIEW (priv->tree_view))))
+            gtk_widget_show_now (priv->button);
+
 	  if (priv->window)
 	    {
 	      if (priv->resizable)
@@ -1327,9 +1329,6 @@ _gtk_tree_view_column_realize_button (GtkTreeViewColumn *column)
   g_return_if_fail (_gtk_tree_view_get_header_window (tree_view) != NULL);
   gtk_widget_set_parent_window (priv->button, _gtk_tree_view_get_header_window (tree_view));
 
-  if (priv->visible)
-    gtk_widget_show (priv->button);
-
   attr.window_type = GDK_WINDOW_CHILD;
   attr.wclass = GDK_INPUT_ONLY;
   attr.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));