1 // Copyright (c) 2010 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 CHROME_BROWSER_CHROMEOS_BRIGHTNESS_OBSERVER_H_ 6 #define CHROME_BROWSER_CHROMEOS_BRIGHTNESS_OBSERVER_H_ 7 #pragma once 8 9 #include "base/basictypes.h" 10 #include "chrome/browser/chromeos/cros/brightness_library.h" 11 12 namespace chromeos { 13 14 // This observer displays a bubble at the bottom of the screen showing the 15 // current brightness level whenever the user changes it. 16 class BrightnessObserver : public BrightnessLibrary::Observer { 17 public: BrightnessObserver()18 BrightnessObserver() {} ~BrightnessObserver()19 virtual ~BrightnessObserver() {} 20 21 private: 22 // BrightnessLibrary::Observer implementation. 23 virtual void BrightnessChanged(int level, bool user_initiated); 24 25 DISALLOW_COPY_AND_ASSIGN(BrightnessObserver); 26 }; 27 28 } // namespace chromeos 29 30 #endif // CHROME_BROWSER_CHROMEOS_BRIGHTNESS_OBSERVER_H_ 31