[evince] ev-view: call gtk_style_context_set_background()

[Carlos Garcia Campos <carlosgc src gnome org>]

commit 17859243df98bcd9698c67081f2443a08e60caeb
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Fri Feb 1 11:14:59 2013 +0100

    ev-view: call gtk_style_context_set_background()
    
    Even if we now render a background in _draw() with
    gtk_render_background, using gtk_style_context_set_background() in
    realize makes the backing GdkWindow not being completely transparent,
    which enables GTK to apply optimizations during the paint cycle.
    The result is, especially in clutter-gtk applications such as Documents,
    scrolling in a document page is much smoother.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=692988

 libview/ev-view.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/libview/ev-view.c b/libview/ev-view.c
index f5e9e38..dd6b728 100644
--- a/libview/ev-view.c
+++ b/libview/ev-view.c
@@ -3455,6 +3455,9 @@ ev_view_realize (GtkWidget *widget)
 				 &attributes, attributes_mask);
 	gtk_widget_set_window (widget, window);
 	gdk_window_set_user_data (window, widget);
+
+	gtk_style_context_set_background (gtk_widget_get_style_context (widget),
+					  window);
 }
 
 static gboolean