[gnome-control-center] Add a option to span background images across monitors

[Matthias Clasen <matthiasc src gnome org>]

commit e5896d700ef75cd3469fafa3e4b96a23e3fed89d
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Feb 18 15:55:35 2010 -0500

    Add a option to span background images across monitors
    
    This feature was lost in 2.28, and people miss it. See bug 609809.
    Note that this adds one new string, 'Span', which appears in the 'Style'
    combobox in the background tab of the appearance capplet.

 capplets/appearance/data/appearance.ui |    3 +++
 capplets/appearance/gnome-wp-item.c    |    1 +
 2 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/capplets/appearance/data/appearance.ui b/capplets/appearance/data/appearance.ui
index 505bd36..3ba17b3 100644
--- a/capplets/appearance/data/appearance.ui
+++ b/capplets/appearance/data/appearance.ui
@@ -1625,6 +1625,9 @@
       <row>
         <col id="0" translatable="yes">Stretch</col>
       </row>
+      <row>
+        <col id="0" translatable="yes">Span</col>
+      </row>
     </data>
   </object>
   <object class="GtkListStore" id="wp_color_liststore">
diff --git a/capplets/appearance/gnome-wp-item.c b/capplets/appearance/gnome-wp-item.c
index b4af8fc..900bbfb 100644
--- a/capplets/appearance/gnome-wp-item.c
+++ b/capplets/appearance/gnome-wp-item.c
@@ -31,6 +31,7 @@ static GConfEnumStringPair options_lookup[] = {
   { GNOME_BG_PLACEMENT_SCALED, "scaled" },
   { GNOME_BG_PLACEMENT_ZOOMED, "zoom" },
   { GNOME_BG_PLACEMENT_TILED, "wallpaper" },
+  { GNOME_BG_PLACEMENT_SPANNED, "spanned" },
   { 0, NULL }
 };