src/ash/high_contrast/high_contrast_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/high_contrast/high_contrast_controller.h"
   6
   7 #include "ash/shell.h"
   8 #include "ui/aura/window_event_dispatcher.h"
   9 #include "ui/compositor/layer.h"
  10
  11 namespace ash {
  12
  13 HighContrastController::HighContrastController()
  14     : enabled_(false) {
  15 }
  16
  17 void HighContrastController::SetEnabled(bool enabled) {
  18   enabled_ = enabled;
  19
  20   // Update all active displays.
  21   aura::Window::Windows root_window_list = Shell::GetAllRootWindows();
  22   for (aura::Window::Windows::iterator it = root_window_list.begin();
  23       it != root_window_list.end(); it++) {
  24     UpdateDisplay(*it);
  25   }
  26 }
  27
  28 void HighContrastController::OnRootWindowAdded(aura::Window* root_window) {
  29   UpdateDisplay(root_window);
  30 }
  31
  32 void HighContrastController::UpdateDisplay(aura::Window* root_window) {
  33   root_window->layer()->SetLayerInverted(enabled_);
  34 }
  35
  36 }  // namespace ash