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1 // Copyright 2017 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 #include "ash/system/night_light/night_light_controller.h" | |
6 | |
7 #include "ash/session/session_controller.h" | |
8 #include "ash/shell.h" | |
9 #include "base/time/time.h" | |
10 #include "base/values.h" | |
11 #include "components/prefs/pref_registry_simple.h" | |
12 #include "components/prefs/scoped_user_pref_update.h" | |
13 #include "ui/compositor/layer.h" | |
14 #include "ui/compositor/scoped_layer_animation_settings.h" | |
15 | |
16 namespace ash { | |
17 | |
18 namespace { | |
19 | |
20 // The key of the dictionary value in the user's pref service that contains all | |
21 // the NightLight settings. | |
22 constexpr char kNightLightPrefsKey[] = "prefs.night_light_prefs"; | |
23 | |
24 // Keys to the various NightLight settings inside its dictionary value. | |
25 constexpr char kStatusKey[] = "night_light_status"; | |
26 constexpr char kColorTemperatureKey[] = "night_light_color_temperature"; | |
27 | |
28 // The duration of the temperature change animation when the change is a result | |
29 // of a manual user setting. | |
30 // TODO(afakhry): Add automatic schedule animation duration when you implement | |
31 // that part. It should be large enough (20 seconds as agreed) to give the user | |
32 // a nice smooth transition. | |
33 constexpr int kManualToggleAnimationDurationSec = 2; | |
34 | |
35 } // namespace | |
36 | |
37 NightLightController::NightLightController( | |
38 SessionController* session_controller) | |
39 : session_controller_(session_controller) { | |
40 session_controller_->AddObserver(this); | |
41 } | |
42 | |
43 NightLightController::~NightLightController() { | |
44 session_controller_->RemoveObserver(this); | |
45 } | |
46 | |
47 // static | |
48 void NightLightController::RegisterPrefs(PrefRegistrySimple* registry) { | |
49 registry->RegisterDictionaryPref(kNightLightPrefsKey); | |
50 } | |
51 | |
52 void NightLightController::AddObserver(Observer* observer) { | |
53 observers_.AddObserver(observer); | |
54 } | |
55 | |
56 void NightLightController::RemoveObserver(Observer* observer) { | |
57 observers_.RemoveObserver(observer); | |
58 } | |
59 | |
60 void NightLightController::Toggle() { | |
61 SetEnabled(!enabled_); | |
62 } | |
63 | |
64 void NightLightController::SetEnabled(bool enabled) { | |
65 if (enabled_ == enabled) | |
66 return; | |
67 | |
68 enabled_ = enabled; | |
69 Refresh(); | |
70 NotifyStatusChanged(); | |
71 PersistUserPrefs(); | |
72 } | |
73 | |
74 void NightLightController::SetColorTemperature(float temperature) { | |
75 // TODO(afakhry): Spport changing the temperature when you implement the | |
76 // settings part of this feature. Right now we'll keep it fixed at the value | |
77 // |color_temperature_| whenever NightLight is turned on. | |
78 | |
79 for (aura::Window* root_window : Shell::GetAllRootWindows()) { | |
80 ui::Layer* layer = root_window->layer(); | |
81 | |
82 ui::ScopedLayerAnimationSettings settings(layer->GetAnimator()); | |
83 settings.SetTransitionDuration( | |
84 base::TimeDelta::FromSeconds(kManualToggleAnimationDurationSec)); | |
85 settings.SetPreemptionStrategy( | |
86 ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET); | |
87 | |
88 layer->SetLayerTemperature(temperature); | |
89 } | |
90 } | |
91 | |
92 void NightLightController::OnActiveUserSessionChanged( | |
93 const AccountId& account_id) { | |
94 // When user is switched in multi profiles. | |
James Cook
2017/05/09 02:45:35
Is this comment still true? Is this code path also
afakhry
2017/05/09 16:32:17
Yes, it's still true, and is also used for initial
| |
95 InitFromUserPrefs(); | |
96 } | |
97 | |
98 void NightLightController::Refresh() { | |
99 SetColorTemperature(enabled_ ? color_temperature_ : 0.0f); | |
100 } | |
101 | |
102 void NightLightController::InitFromUserPrefs() { | |
103 auto* pref_service = Shell::Get()->GetActiveUserPrefService(); | |
104 if (!pref_service) { | |
105 // The pref_service can be NULL in ash_unittests. | |
106 return; | |
107 } | |
108 | |
109 const base::DictionaryValue* night_light_prefs = | |
110 pref_service->GetDictionary(kNightLightPrefsKey); | |
111 bool enabled = false; | |
112 night_light_prefs->GetBoolean(kStatusKey, &enabled); | |
113 enabled_ = enabled; | |
114 | |
115 double color_temperature = 0.5; | |
116 night_light_prefs->GetDouble(kColorTemperatureKey, &color_temperature); | |
117 color_temperature_ = static_cast<float>(color_temperature); | |
118 | |
119 Refresh(); | |
120 NotifyStatusChanged(); | |
121 } | |
122 | |
123 void NightLightController::PersistUserPrefs() { | |
124 auto* pref_service = ash::Shell::Get()->GetActiveUserPrefService(); | |
125 if (!pref_service) { | |
126 // The pref_service can be NULL in ash_unittests. | |
127 return; | |
128 } | |
129 DictionaryPrefUpdate pref_updater(pref_service, kNightLightPrefsKey); | |
130 | |
131 base::DictionaryValue* dictionary = pref_updater.Get(); | |
132 dictionary->SetBoolean(kStatusKey, enabled_); | |
133 dictionary->SetDouble(kColorTemperatureKey, | |
134 static_cast<double>(color_temperature_)); | |
135 } | |
136 | |
137 void NightLightController::NotifyStatusChanged() { | |
138 for (auto& observer : observers_) | |
139 observer.OnNightLightEnabledChanged(enabled_); | |
140 } | |
141 | |
142 } // namespace ash | |
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