[gnome-software] Use the Fedora themed image for the upgrade banner

[Richard Hughes <rhughes src gnome org>]

commit c23122346d0d6494a33841ec7aa47c641dd0b8a5
Author: Richard Hughes <richard hughsie com>
Date:   Wed Apr 20 11:13:42 2016 +0100

    Use the Fedora themed image for the upgrade banner

 src/plugins/gs-plugin-fedora-distro-upgrades.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/src/plugins/gs-plugin-fedora-distro-upgrades.c b/src/plugins/gs-plugin-fedora-distro-upgrades.c
index a6d9b03..11178de 100644
--- a/src/plugins/gs-plugin-fedora-distro-upgrades.c
+++ b/src/plugins/gs-plugin-fedora-distro-upgrades.c
@@ -275,6 +275,7 @@ gs_plugin_add_distro_upgrades (GsPlugin *plugin,
                g_autofree gchar *app_id = NULL;
                g_autofree gchar *app_version = NULL;
                g_autofree gchar *url = NULL;
+               g_autofree gchar *css = NULL;
                g_autoptr(GsApp) app = NULL;
 
                /* only interested in upgrades to the same distro */
@@ -307,6 +308,14 @@ gs_plugin_add_distro_upgrades (GsPlugin *plugin,
                                       distro_info->version);
                gs_app_set_url (app, AS_URL_KIND_HOMEPAGE, url);
 
+               /* use a fancy background */
+               css = g_strdup_printf ("background: 
url('/usr/share/backgrounds/f%i/default/standard/f%i.png');"
+                                      "background-position: center;"
+                                      "background-size: cover;",
+                                      distro_info->version,
+                                      distro_info->version);
+               gs_app_set_metadata (app, "GnomeSoftware::UpgradeBanner-css", css);
+
                gs_plugin_add_app (list, app);
        }