[gtk+] range: don't draw origin when the slider is invisible

[Cosimo Cecchi <cosimoc src gnome org>]

commit d434a9103c0fe2606b8aeeb1c629db9e9d1adbe6
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Wed Feb 27 17:18:28 2013 -0500

    range: don't draw origin when the slider is invisible
    
    When the range of the GtkRange is zero (i.e. the upper and lower bounds
    of the adjustment have the same value), don't use an origin to draw the
    trough, as the slider will also be hidden, and the juncture between the
    two sections of the trough will be visible.

 gtk/gtkrange.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkrange.c b/gtk/gtkrange.c
index d627566..8339e52 100644
--- a/gtk/gtkrange.c
+++ b/gtk/gtkrange.c
@@ -2117,7 +2117,7 @@ gtk_range_draw (GtkWidget *widget,
 
       if (draw_trough)
         {
-          if (!priv->has_origin)
+          if (!priv->has_origin || !draw_slider)
             {
               gtk_render_background (context, cr,
                                      x, y, width, height);