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 #if defined(OS_CHROMEOS) 13 #include "ui/display/chromeos/display_configurator.h" 14 #endif 15 16 namespace gfx { 17 class Rect; 18 class Size; 19 } 20 21 namespace ui { 22 class Layer; 23 } 24 25 namespace ash { 26 27 namespace test { 28 class PowerButtonControllerTest; 29 } 30 31 class LockStateController; 32 33 // Displays onscreen animations and locks or suspends the system in response to 34 // the power button being pressed or released. 35 class ASH_EXPORT PowerButtonController 36 // TODO(derat): Remove these ifdefs after DisplayConfigurator becomes 37 // cross-platform. 38 #if defined(OS_CHROMEOS) 39 : public ui::DisplayConfigurator::Observer 40 #endif 41 { 42 public: 43 explicit PowerButtonController(LockStateController* controller); 44 virtual ~PowerButtonController(); 45 set_has_legacy_power_button_for_test(bool legacy)46 void set_has_legacy_power_button_for_test(bool legacy) { 47 has_legacy_power_button_ = legacy; 48 } 49 50 // Called when the current screen brightness changes. 51 void OnScreenBrightnessChanged(double percent); 52 53 // Called when the power or lock buttons are pressed or released. 54 void OnPowerButtonEvent(bool down, const base::TimeTicks& timestamp); 55 void OnLockButtonEvent(bool down, const base::TimeTicks& timestamp); 56 57 #if defined(OS_CHROMEOS) 58 // Overriden from ui::DisplayConfigurator::Observer: 59 virtual void OnDisplayModeChanged( 60 const ui::DisplayConfigurator::DisplayStateList& outputs) OVERRIDE; 61 #endif 62 63 private: 64 friend class test::PowerButtonControllerTest; 65 66 // Are the power or lock buttons currently held? 67 bool power_button_down_; 68 bool lock_button_down_; 69 70 // Has the screen brightness been reduced to 0%? 71 bool brightness_is_zero_; 72 73 // True if an internal display is off while an external display is on (e.g. 74 // for Chrome OS's docked mode, where a Chromebook's lid is closed while an 75 // external display is connected). 76 bool internal_display_off_and_external_display_on_; 77 78 // Was a command-line switch set telling us that we're running on hardware 79 // that misreports power button releases? 80 bool has_legacy_power_button_; 81 82 LockStateController* controller_; // Not owned. 83 84 DISALLOW_COPY_AND_ASSIGN(PowerButtonController); 85 }; 86 87 } // namespace ash 88 89 #endif // ASH_WM_POWER_BUTTON_CONTROLLER_H_ 90