1 files changed, 45 insertions, 0 deletions
diff --git a/chromium/ash/wm/system_background_controller.cc b/chromium/ash/wm/system_background_controller.cc
new file mode 100644
index 00000000000..7e4054e1378
--- /dev/null
+++ b/chromium/ash/wm/system_background_controller.cc
@@ -0,0 +1,45 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ash/wm/system_background_controller.h"
+
+#include "ui/aura/window.h"
+#include "ui/compositor/layer.h"
+#include "ui/compositor/layer_type.h"
+
+namespace ash {
+namespace internal {
+
+SystemBackgroundController::SystemBackgroundController(
+    aura::Window* root_window,
+    SkColor color)
+    : root_window_(root_window),
+      layer_(new ui::Layer(ui::LAYER_SOLID_COLOR)) {
+  root_window_->AddObserver(this);
+  layer_->SetColor(color);
+
+  ui::Layer* root_layer = root_window_->layer();
+  layer_->SetBounds(gfx::Rect(root_layer->bounds().size()));
+  root_layer->Add(layer_.get());
+  root_layer->StackAtBottom(layer_.get());
+}
+
+SystemBackgroundController::~SystemBackgroundController() {
+  root_window_->RemoveObserver(this);
+}
+
+void SystemBackgroundController::SetColor(SkColor color) {
+  layer_->SetColor(color);
+}
+
+void SystemBackgroundController::OnWindowBoundsChanged(
+    aura::Window* root,
+    const gfx::Rect& old_bounds,
+    const gfx::Rect& new_bounds) {
+  DCHECK_EQ(root_window_, root);
+  layer_->SetBounds(gfx::Rect(root_window_->layer()->bounds().size()));
+}
+
+}  // namespace internal
+}  // namespace ash