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_WM_POWER_BUTTON_CONTROLLER_H_ 6 #define ASH_WM_POWER_BUTTON_CONTROLLER_H_ 7 8 #include "ash/ash_export.h" 9 #include "ash/wm/session_state_animator.h" 10 #include "base/basictypes.h" 11 12 namespace gfx { 13 class Rect; 14 class Size; 15 } 16 17 namespace ui { 18 class Layer; 19 } 20 21 namespace ash { 22 23 namespace test { 24 class PowerButtonControllerTest; 25 } 26 27 class LockStateController; 28 29 // Displays onscreen animations and locks or suspends the system in response to 30 // the power button being pressed or released. 31 class ASH_EXPORT PowerButtonController { 32 public: 33 34 explicit PowerButtonController(LockStateController* controller); 35 virtual ~PowerButtonController(); 36 set_has_legacy_power_button_for_test(bool legacy)37 void set_has_legacy_power_button_for_test(bool legacy) { 38 has_legacy_power_button_ = legacy; 39 } 40 41 // Called when the current screen brightness changes. 42 void OnScreenBrightnessChanged(double percent); 43 44 // Called when the power or lock buttons are pressed or released. 45 void OnPowerButtonEvent(bool down, const base::TimeTicks& timestamp); 46 void OnLockButtonEvent(bool down, const base::TimeTicks& timestamp); 47 48 private: 49 friend class test::PowerButtonControllerTest; 50 51 // Are the power or lock buttons currently held? 52 bool power_button_down_; 53 bool lock_button_down_; 54 55 // Is the screen currently turned off? 56 bool screen_is_off_; 57 58 // Was a command-line switch set telling us that we're running on hardware 59 // that misreports power button releases? 60 bool has_legacy_power_button_; 61 62 LockStateController* controller_; // Not owned. 63 64 DISALLOW_COPY_AND_ASSIGN(PowerButtonController); 65 }; 66 67 } // namespace ash 68 69 #endif // ASH_WM_POWER_BUTTON_CONTROLLER_H_ 70