From 2507c509f45ab6b48d693cfd118ef7f4f18e3541 Mon Sep 17 00:00:00 2001
From: Srinivasa Ragavan <sragavan@novell.com>
Date: Fri, 12 Jun 2009 16:54:49 +0530
Subject: [PATCH] Add configure option to scale mutter background and scale
 background as a build time option.

---
 configure.ac         |   11 ++++++++++
 src/moblin-netbook.c |   52 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 63 insertions(+), 0 deletions(-)

diff --git a/configure.ac b/configure.ac
index 68fc069..313ea04 100644
--- a/configure.ac
+++ b/configure.ac
@@ -123,6 +123,17 @@ if test x"$enable_debug" = xyes; then
    CFLAGS="$CFLAGS -g -O0"
 fi
 
+AC_ARG_ENABLE([scale-background],
+	AC_HELP_STRING([--scale-background],
+		[Scale the mutter-moblin background image]),
+		[scale_background="$enableval"], [scale_background=no])
+
+if test x"$scale_background" = xyes; then
+	AC_DEFINE(ENABLE_MUTTER_SCALE, 1, [scale mutter background])
+else	
+	AC_DEFINE(ENABLE_MUTTER_SCALE, 0, [don't scale mutter background])
+fi
+
 # glib-genmarshal
 GLIB_GENMARSHAL=`$PKG_CONFIG --variable=glib_genmarshal glib-2.0`
 AC_SUBST(GLIB_GENMARSHAL)
diff --git a/src/moblin-netbook.c b/src/moblin-netbook.c
index 8b84d2c..a5778cf 100644
--- a/src/moblin-netbook.c
+++ b/src/moblin-netbook.c
@@ -444,6 +444,57 @@ moblin_netbook_plugin_init (MoblinNetbookPlugin *self)
   textdomain (GETTEXT_PACKAGE);
 }
 
+#if ENABLE_MUTTER_SCALE
+static void
+on_desktop_pre_paint (ClutterActor *actor, gpointer data)
+{
+  	
+  MoblinNetbookPlugin *plugin = data;
+  MoblinNetbookPluginPrivate *priv = MOBLIN_NETBOOK_PLUGIN (plugin)->priv;
+  CoglHandle *tex;
+  float bw, bh, ah, bw;
+  float v;
+  float tx1, tx2, ty1, ty2;
+  ClutterColor col = { 0xff, 0xff, 0xff, 0xff };
+  gint screen_width, screen_height;
+
+  tex = clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (actor));
+  
+  mutter_plugin_query_screen_size (plugin, &screen_width, &screen_height);
+
+  bw = (float) cogl_texture_get_width (tex); /* base texture width */
+  bh = (float) cogl_texture_get_height (tex); /* base texture height */
+
+  /* no comment */
+  if (bw/bh < aw/ah)
+  {
+    /* fit width */
+    v = ((ah * bw) / (aw * bh)) / 2;
+    tx1 = 0;
+    tx2 = 1;
+    ty1 = (0.5 - v);
+    ty2 = (0.5 + v);
+  } else {
+    /* fit height */
+    v = ((aw * bh) / (ah * bw)) / 2;
+    tx1 = (0.5 - v);
+    tx2 = (0.5 + v);
+    ty1 = 0;
+    ty2 = 1;
+  }
+
+  col.alpha = clutter_actor_get_paint_opacity (actor);
+  cogl_set_source_color4ub (col.red, col.green, col.blue, col.alpha);
+  cogl_rectangle (0, 0, aw, ah);
+  cogl_set_source_texture (tex);
+  cogl_rectangle_with_texture_coords (0, 0,
+                                      aw, ah,
+                                      tx1, ty1,
+                                      tx2, ty2);
+
+  g_signal_stop_emission_by_name (actor, "paint");  
+}
+#else
 static void
 on_desktop_pre_paint (ClutterActor *actor, gpointer data)
 {
@@ -486,6 +537,7 @@ on_desktop_pre_paint (ClutterActor *actor, gpointer data)
 
   g_signal_stop_emission_by_name (actor, "paint");
 }
+#endif
 
 struct parallax_data
 {
-- 
1.6.0.2