1 // Copyright 2014 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_UI_ASH_MULTI_USER_USER_SWITCH_ANIMATOR_CHROMEOS_H_ 6 #define CHROME_BROWSER_UI_ASH_MULTI_USER_USER_SWITCH_ANIMATOR_CHROMEOS_H_ 7 8 #include <string> 9 10 #include "base/memory/scoped_ptr.h" 11 #include "base/timer/timer.h" 12 13 namespace aura { 14 class Window; 15 } // namespace aura 16 17 namespace chrome { 18 19 class MultiUserWindowManagerChromeOS; 20 21 // A class which performs transitions animations between users. Upon creation, 22 // the animation gets started and upon destruction the animation gets finished 23 // if not done yet. 24 // Specifying |animation_disabled| upon creation will perform the transition 25 // without visible animations. 26 class UserSwichAnimatorChromeOS { 27 public: 28 // The animation step for the user change animation. 29 enum AnimationStep { 30 ANIMATION_STEP_HIDE_OLD_USER, // Hiding the old user (and shelf). 31 ANIMATION_STEP_SHOW_NEW_USER, // Show the shelf of the new user. 32 ANIMATION_STEP_FINALIZE, // All animations are done - final cleanup. 33 ANIMATION_STEP_ENDED // The animation has ended. 34 }; 35 36 UserSwichAnimatorChromeOS(MultiUserWindowManagerChromeOS* owner, 37 const std::string& new_user_id, 38 int animation_speed_ms); 39 ~UserSwichAnimatorChromeOS(); 40 41 // Check if a window is covering the entire work area of the screen it is on. 42 static bool CoversScreen(aura::Window* window); 43 IsAnimationFinished()44 bool IsAnimationFinished() { 45 return animation_step_ == ANIMATION_STEP_ENDED; 46 } 47 48 // Returns the user id for which the wallpaper is currently shown. 49 // If a wallpaper is transitioning to B it will be returned as "->B". wallpaper_user_id_for_test()50 const std::string& wallpaper_user_id_for_test() { return wallpaper_user_id_; } 51 52 // Advances the user switch animation to the next step. It reads the current 53 // step from |animation_step_| and increments it thereafter. When 54 // |ANIMATION_STEP_FINALIZE| gets executed, the animation is finished and the 55 // timer (if one exists) will get destroyed. 56 void AdvanceUserTransitionAnimation(); 57 58 // When the system is shutting down, the animation can be stopped without 59 // ending it. 60 void CancelAnimation(); 61 62 private: 63 // The window configuration of screen covering windows before an animation. 64 enum TransitioningScreenCover { 65 NO_USER_COVERS_SCREEN, // No window covers the entire screen. 66 OLD_USER_COVERS_SCREEN, // The current user has at least one window 67 // covering the entire screen. 68 NEW_USER_COVERS_SCREEN, // The user which becomes active has at least one 69 // window covering the entire screen. 70 BOTH_USERS_COVER_SCREEN // Both users have at least one window each 71 // covering the entire screen. 72 }; 73 74 // Finalizes the animation and ends the timer (if there is one). 75 void FinalizeAnimation(); 76 77 // Execute the user wallpaper animations for |animation_step|. 78 void TransitionWallpaper(AnimationStep animtion_step); 79 80 // Execute the user shelf animations for |animation_step|. 81 void TransitionUserShelf(AnimationStep animtion_step); 82 83 // Execute the window animations for |animation_step|. 84 void TransitionWindows(AnimationStep animation_step); 85 86 // Check if a window is maximized / fullscreen / covering the entire screen. 87 // TODO(skuhne): We might want to do this on a per screen basis. 88 TransitioningScreenCover GetScreenCover(); 89 90 // The owning window manager. 91 MultiUserWindowManagerChromeOS* owner_; 92 93 // The new user to set. 94 std::string new_user_id_; 95 96 // The animation speed in ms. If 0, animations are disabled. 97 int animation_speed_ms_; 98 99 // The next animation step for AdvanceUserTransitionAnimation(). 100 AnimationStep animation_step_; 101 102 // The screen cover status before the animation has started. 103 TransitioningScreenCover screen_cover_; 104 105 // A timer which watches to executes the second part of a "user changed" 106 // animation. Note that this timer exists only during such an animation. 107 scoped_ptr<base::Timer> user_changed_animation_timer_; 108 109 // For unit tests: Check which wallpaper was set. 110 std::string wallpaper_user_id_; 111 112 DISALLOW_COPY_AND_ASSIGN(UserSwichAnimatorChromeOS); 113 }; 114 115 } // namespace chrome 116 117 #endif // CHROME_BROWSER_UI_ASH_MULTI_USER_USER_SWITCH_ANIMATOR_CHROMEOS_H_ 118