[gtk+] gtktextdisplay: Optimize GtkStyleContext usage

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

commit 50c4fdbacd20a48e39a6b633eaad6822566411c2
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Wed Nov 26 18:10:21 2014 -0800

    gtktextdisplay: Optimize GtkStyleContext usage

 gtk/gtktextdisplay.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtktextdisplay.c b/gtk/gtktextdisplay.c
index 420db81..6be8fe2 100644
--- a/gtk/gtktextdisplay.c
+++ b/gtk/gtktextdisplay.c
@@ -587,14 +587,18 @@ render_para (GtkTextRenderer    *text_renderer,
   screen_width = line_display->total_width;
 
   context = gtk_widget_get_style_context (text_renderer->widget);
-  state = gtk_widget_get_state_flags (text_renderer->widget);
+  gtk_style_context_save (context);
 
+  state = gtk_style_context_get_state (context);
   state |= GTK_STATE_FLAG_SELECTED;
+  gtk_style_context_set_state (context, state);
 
 G_GNUC_BEGIN_IGNORE_DEPRECATIONS
   gtk_style_context_get_background_color (context, state, &selection);
 G_GNUC_END_IGNORE_DEPRECATIONS
 
+ gtk_style_context_restore (context);
+
   do
     {
       PangoLayoutLine *line = pango_layout_iter_get_line_readonly (iter);