[gtk+] gtknotebook: Optimize GtkStyleContext usage

[Jasper St. Pierre <jstpierre src gnome org>]

commit c71e2131345c929753a0128c780d679ce0c4ce6a
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Tue Nov 25 11:05:49 2014 -0800

    gtknotebook: Optimize GtkStyleContext usage

 gtk/gtknotebook.c |   17 +++++++----------
 1 files changed, 7 insertions(+), 10 deletions(-)
---
diff --git a/gtk/gtknotebook.c b/gtk/gtknotebook.c
index acb90e5..916ef58 100644
--- a/gtk/gtknotebook.c
+++ b/gtk/gtknotebook.c
@@ -2240,15 +2240,17 @@ get_padding_and_border (GtkNotebook *notebook,
                         GtkBorder *border)
 {
   GtkStyleContext *context;
+  GtkStateFlags state;
 
   context = gtk_widget_get_style_context (GTK_WIDGET (notebook));
-  gtk_style_context_get_padding (context, 0, border);
+  state = gtk_style_context_get_state (context);
+  gtk_style_context_get_padding (context, state, border);
 
   if (notebook->priv->show_border || notebook->priv->show_tabs)
     {
       GtkBorder tmp;
 
-      gtk_style_context_get_border (context, 0, &tmp);
+      gtk_style_context_get_border (context, state, &tmp);
       border->top += tmp.top;
       border->right += tmp.right;
       border->bottom += tmp.bottom;
@@ -6247,7 +6249,7 @@ gtk_notebook_calculate_tabs_allocation (GtkNotebook  *notebook,
 
       if (page != priv->cur_page)
         {
-          GtkBorder active_padding, normal_padding, padding;
+          GtkBorder padding = {};
 
           /* The active tab is by definition at least the same height as the inactive one.
            * The padding we're building is the offset between the two tab states, 
@@ -6259,16 +6261,11 @@ gtk_notebook_calculate_tabs_allocation (GtkNotebook  *notebook,
           gtk_style_context_save (context);
           notebook_tab_prepare_style_context (notebook, page, context, TRUE);
 
-          gtk_style_context_get_padding (context, GTK_STATE_FLAG_ACTIVE, &active_padding);
-          gtk_style_context_get_padding (context, GTK_STATE_FLAG_NORMAL, &normal_padding);
+          /* gtk_style_context_get_padding (context, GTK_STATE_FLAG_ACTIVE, &active_padding); */
+          /* gtk_style_context_get_padding (context, GTK_STATE_FLAG_NORMAL, &normal_padding); */
 
           gtk_style_context_restore (context);
 
-          padding.top = MAX (0, active_padding.top - normal_padding.top);
-          padding.right = MAX (0, active_padding.right - normal_padding.right);
-          padding.bottom = MAX (0, active_padding.bottom - normal_padding.bottom);
-          padding.left = MAX (0, active_padding.left - normal_padding.left);
-
           switch (tab_pos)
             {
             case GTK_POS_TOP: