src/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
  13 SystemBackgroundController::SystemBackgroundController(
  14     aura::Window* root_window,
  15     SkColor color)
  16     : root_window_(root_window),
  17       layer_(new ui::Layer(ui::LAYER_SOLID_COLOR)) {
  18   root_window_->AddObserver(this);
  19   layer_->SetColor(color);
  20
  21   ui::Layer* root_layer = root_window_->layer();
  22   layer_->SetBounds(gfx::Rect(root_layer->bounds().size()));
  23   root_layer->Add(layer_.get());
  24   root_layer->StackAtBottom(layer_.get());
  25 }
  26
  27 SystemBackgroundController::~SystemBackgroundController() {
  28   root_window_->RemoveObserver(this);
  29 }
  30
  31 void SystemBackgroundController::SetColor(SkColor color) {
  32   layer_->SetColor(color);
  33 }
  34
  35 void SystemBackgroundController::OnWindowBoundsChanged(
  36     aura::Window* root,
  37     const gfx::Rect& old_bounds,
  38     const gfx::Rect& new_bounds) {
  39   DCHECK_EQ(root_window_, root);
  40   layer_->SetBounds(gfx::Rect(root_window_->layer()->bounds().size()));
  41 }
  42
  43 }  // namespace ash