ash/wm/system_background_controller.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ash/wm/system_background_controller.h"
   6
   7 #include "ui/aura/window.h"
   8 #include "ui/compositor/layer.h"
   9 #include "ui/compositor/layer_type.h"
  10
  11 namespace ash {
  12 namespace internal {
  13
  14 SystemBackgroundController::SystemBackgroundController(
  15     aura::Window* root_window,
  16     SkColor color)
  17     : root_window_(root_window),
  18       layer_(new ui::Layer(ui::LAYER_SOLID_COLOR)) {
  19   root_window_->AddObserver(this);
  20   layer_->SetColor(color);
  21
  22   ui::Layer* root_layer = root_window_->layer();
  23   layer_->SetBounds(gfx::Rect(root_layer->bounds().size()));
  24   root_layer->Add(layer_.get());
  25   root_layer->StackAtBottom(layer_.get());
  26 }
  27
  28 SystemBackgroundController::~SystemBackgroundController() {
  29   root_window_->RemoveObserver(this);
  30 }
  31
  32 void SystemBackgroundController::SetColor(SkColor color) {
  33   layer_->SetColor(color);
  34 }
  35
  36 void SystemBackgroundController::OnWindowBoundsChanged(
  37     aura::Window* root,
  38     const gfx::Rect& old_bounds,
  39     const gfx::Rect& new_bounds) {
  40   DCHECK_EQ(root_window_, root);
  41   layer_->SetBounds(gfx::Rect(root_window_->layer()->bounds().size()));
  42 }
  43
  44 }  // namespace internal
  45 }  // namespace ash