ash/high_contrast/high_contrast_controller.h

   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 #ifndef ASH_HIGH_CONTRAST_HIGH_CONTRAST_CONTROLLER_H_
   6 #define ASH_HIGH_CONTRAST_HIGH_CONTRAST_CONTROLLER_H_
   7
   8 #include "ash/ash_export.h"
   9 #include "ash/shell_observer.h"
  10 #include "base/basictypes.h"
  11
  12 namespace aura {
  13 class Window;
  14 }
  15
  16 namespace ash {
  17
  18 class ASH_EXPORT HighContrastController : public ShellObserver {
  19  public:
  20   HighContrastController();
  21   ~HighContrastController() override;
  22
  23   // Set high contrast mode and update all available displays.
  24   void SetEnabled(bool enabled);
  25
  26   // ShellObserver:
  27   void OnRootWindowAdded(aura::Window* root_window) override;
  28
  29  private:
  30   // Update high contrast mode on the passed display.
  31   void UpdateDisplay(aura::Window* root_window);
  32
  33   // Indicates if the high contrast mode is enabled or disabled.
  34   bool enabled_;
  35
  36   DISALLOW_COPY_AND_ASSIGN(HighContrastController);
  37 };
  38
  39 }  // namespace ash
  40
  41 #endif  // ASH_HIGH_CONTRAST_HIGH_CONTRAST_CONTROLLER_H_