3 files changed, 67 insertions, 1 deletions
diff --git a/src/compositor/compositor-private.h b/src/compositor/compositor-private.h
index 6e34fe05..93f3e05b 100644
--- a/src/compositor/compositor-private.h
+++ b/src/compositor/compositor-private.h
@@ -49,6 +49,11 @@ struct _MetaCompositor
   void (*set_active_window) (MetaCompositor *compositor,
                              MetaScreen     *screen,
                              MetaWindow     *window);
+
+  void (*maximize_window)   (MetaCompositor *compositor,
+                             MetaWindow     *window);
+  void (*unmaximize_window) (MetaCompositor *compositor,
+                             MetaWindow     *window);
 };
 
 #endif
diff --git a/src/compositor/compositor-xrender.c b/src/compositor/compositor-xrender.c
index 9bf9d8d1..68898257 100644
--- a/src/compositor/compositor-xrender.c
+++ b/src/compositor/compositor-xrender.c
@@ -905,6 +905,13 @@ window_has_shadow (MetaCompWindow *cw)
      as the frame might be the reason the window is shaped */
   if (cw->window)
     {
+      /* Do not add shadows for maximized windows */
+      if (meta_window_is_maximized (cw->window))
+        {
+          meta_verbose ("Window has no shadow because it is maximized\n");
+          return FALSE;
+        }
+
       if (meta_window_get_frame (cw->window)) {
         meta_verbose ("Window has shadow because it has a frame\n");
         return TRUE;
@@ -3011,6 +3018,38 @@ xrender_set_active_window (MetaCompositor *compositor,
 #endif
 }
 
+static void
+xrender_maximize_window (MetaCompositor *compositor,
+                         MetaWindow     *window)
+{
+#ifdef HAVE_COMPOSITE_EXTENSIONS
+  MetaFrame *frame = meta_window_get_frame (window);
+  Window xid = frame ? meta_frame_get_xwindow (frame) : meta_window_get_xwindow (window);
+  MetaCompWindow *cw = find_window_in_display (meta_window_get_display (window), xid);
+
+  if (!cw)
+    return;
+
+  cw->needs_shadow = window_has_shadow (cw);
+#endif
+}
+
+static void
+xrender_unmaximize_window (MetaCompositor *compositor,
+                           MetaWindow     *window)
+{
+#ifdef HAVE_COMPOSITE_EXTENSIONS
+  MetaFrame *frame = meta_window_get_frame (window);
+  Window xid = frame ? meta_frame_get_xwindow (frame) : meta_window_get_xwindow (window);
+  MetaCompWindow *cw = find_window_in_display (meta_window_get_display (window), xid);
+
+  if (!cw)
+    return;
+
+  cw->needs_shadow = window_has_shadow (cw);
+#endif
+}
+
 static MetaCompositor comp_info = {
   xrender_destroy,
   xrender_manage_screen,
@@ -3020,7 +3059,9 @@ static MetaCompositor comp_info = {
   xrender_set_updates,
   xrender_process_event,
   xrender_get_window_pixmap,
-  xrender_set_active_window
+  xrender_set_active_window,
+  xrender_maximize_window,
+  xrender_unmaximize_window,
 };
 
 MetaCompositor *
diff --git a/src/compositor/compositor.c b/src/compositor/compositor.c
index ab6427e7..d23fe3f7 100644
--- a/src/compositor/compositor.c
+++ b/src/compositor/compositor.c
@@ -157,3 +157,23 @@ void meta_compositor_free_window (MetaCompositor *compositor,
                                   MetaWindow     *window)
 {
 }
+
+void
+meta_compositor_maximize_window (MetaCompositor *compositor,
+                                 MetaWindow     *window)
+{
+#ifdef HAVE_COMPOSITE_EXTENSIONS
+  if (compositor && compositor->maximize_window)
+    compositor->maximize_window (compositor, window);
+#endif
+}
+
+void
+meta_compositor_unmaximize_window (MetaCompositor *compositor,
+                                   MetaWindow     *window)
+{
+#ifdef HAVE_COMPOSITE_EXTENSIONS
+  if (compositor && compositor->unmaximize_window)
+    compositor->unmaximize_window (compositor, window);
+#endif
+}