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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "chrome/browser/chromeos/accessibility/magnification_manager.h" | 5 #include "chrome/browser/chromeos/accessibility/magnification_manager.h" |
| 6 | 6 |
| 7 #include <limits> | 7 #include <limits> |
| 8 #include <memory> | 8 #include <memory> |
| 9 | 9 |
| 10 #include "ash/common/accessibility_types.h" |
| 10 #include "ash/common/session/session_state_observer.h" | 11 #include "ash/common/session/session_state_observer.h" |
| 11 #include "ash/magnifier/magnification_controller.h" | 12 #include "ash/magnifier/magnification_controller.h" |
| 12 #include "ash/magnifier/partial_magnification_controller.h" | 13 #include "ash/magnifier/partial_magnification_controller.h" |
| 13 #include "ash/shell.h" | 14 #include "ash/shell.h" |
| 14 #include "ash/shell_delegate.h" | 15 #include "ash/shell_delegate.h" |
| 15 #include "ash/system/tray/system_tray_notifier.h" | 16 #include "ash/system/tray/system_tray_notifier.h" |
| 16 #include "base/macros.h" | 17 #include "base/macros.h" |
| 17 #include "base/memory/singleton.h" | 18 #include "base/memory/singleton.h" |
| 18 #include "chrome/browser/chrome_notification_types.h" | 19 #include "chrome/browser/chrome_notification_types.h" |
| 19 #include "chrome/browser/chromeos/accessibility/accessibility_manager.h" | 20 #include "chrome/browser/chromeos/accessibility/accessibility_manager.h" |
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| 42 public content::NotificationObserver, | 43 public content::NotificationObserver, |
| 43 public ash::SessionStateObserver { | 44 public ash::SessionStateObserver { |
| 44 public: | 45 public: |
| 45 MagnificationManagerImpl() | 46 MagnificationManagerImpl() |
| 46 : profile_(NULL), | 47 : profile_(NULL), |
| 47 magnifier_enabled_pref_handler_( | 48 magnifier_enabled_pref_handler_( |
| 48 prefs::kAccessibilityScreenMagnifierEnabled), | 49 prefs::kAccessibilityScreenMagnifierEnabled), |
| 49 magnifier_type_pref_handler_(prefs::kAccessibilityScreenMagnifierType), | 50 magnifier_type_pref_handler_(prefs::kAccessibilityScreenMagnifierType), |
| 50 magnifier_scale_pref_handler_( | 51 magnifier_scale_pref_handler_( |
| 51 prefs::kAccessibilityScreenMagnifierScale), | 52 prefs::kAccessibilityScreenMagnifierScale), |
| 52 type_(ui::kDefaultMagnifierType), | 53 type_(ash::kDefaultMagnifierType), |
| 53 enabled_(false), | 54 enabled_(false), |
| 54 keep_focus_centered_(false), | 55 keep_focus_centered_(false), |
| 55 observing_focus_change_in_page_(false) { | 56 observing_focus_change_in_page_(false) { |
| 56 registrar_.Add(this, | 57 registrar_.Add(this, |
| 57 chrome::NOTIFICATION_LOGIN_OR_LOCK_WEBUI_VISIBLE, | 58 chrome::NOTIFICATION_LOGIN_OR_LOCK_WEBUI_VISIBLE, |
| 58 content::NotificationService::AllSources()); | 59 content::NotificationService::AllSources()); |
| 59 registrar_.Add(this, | 60 registrar_.Add(this, |
| 60 chrome::NOTIFICATION_SESSION_STARTED, | 61 chrome::NOTIFICATION_SESSION_STARTED, |
| 61 content::NotificationService::AllSources()); | 62 content::NotificationService::AllSources()); |
| 62 registrar_.Add(this, | 63 registrar_.Add(this, |
| 63 chrome::NOTIFICATION_PROFILE_DESTROYED, | 64 chrome::NOTIFICATION_PROFILE_DESTROYED, |
| 64 content::NotificationService::AllSources()); | 65 content::NotificationService::AllSources()); |
| 65 } | 66 } |
| 66 | 67 |
| 67 ~MagnificationManagerImpl() override { | 68 ~MagnificationManagerImpl() override { |
| 68 CHECK(this == g_magnification_manager); | 69 CHECK(this == g_magnification_manager); |
| 69 } | 70 } |
| 70 | 71 |
| 71 // MagnificationManager implimentation: | 72 // MagnificationManager implimentation: |
| 72 bool IsMagnifierEnabled() const override { return enabled_; } | 73 bool IsMagnifierEnabled() const override { return enabled_; } |
| 73 | 74 |
| 74 ui::MagnifierType GetMagnifierType() const override { return type_; } | 75 ash::MagnifierType GetMagnifierType() const override { return type_; } |
| 75 | 76 |
| 76 void SetMagnifierEnabled(bool enabled) override { | 77 void SetMagnifierEnabled(bool enabled) override { |
| 77 if (!profile_) | 78 if (!profile_) |
| 78 return; | 79 return; |
| 79 | 80 |
| 80 PrefService* prefs = profile_->GetPrefs(); | 81 PrefService* prefs = profile_->GetPrefs(); |
| 81 prefs->SetBoolean(prefs::kAccessibilityScreenMagnifierEnabled, enabled); | 82 prefs->SetBoolean(prefs::kAccessibilityScreenMagnifierEnabled, enabled); |
| 82 prefs->CommitPendingWrite(); | 83 prefs->CommitPendingWrite(); |
| 83 } | 84 } |
| 84 | 85 |
| 85 void SetMagnifierType(ui::MagnifierType type) override { | 86 void SetMagnifierType(ash::MagnifierType type) override { |
| 86 if (!profile_) | 87 if (!profile_) |
| 87 return; | 88 return; |
| 88 | 89 |
| 89 PrefService* prefs = profile_->GetPrefs(); | 90 PrefService* prefs = profile_->GetPrefs(); |
| 90 prefs->SetInteger(prefs::kAccessibilityScreenMagnifierType, type); | 91 prefs->SetInteger(prefs::kAccessibilityScreenMagnifierType, type); |
| 91 prefs->CommitPendingWrite(); | 92 prefs->CommitPendingWrite(); |
| 92 } | 93 } |
| 93 | 94 |
| 94 void SaveScreenMagnifierScale(double scale) override { | 95 void SaveScreenMagnifierScale(double scale) override { |
| 95 if (!profile_) | 96 if (!profile_) |
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| 148 // This method may be invoked even when the other magnifier settings (e.g. | 149 // This method may be invoked even when the other magnifier settings (e.g. |
| 149 // type or scale) are changed, so we need to call magnification controller | 150 // type or scale) are changed, so we need to call magnification controller |
| 150 // even if |enabled| is unchanged. Only if |enabled| is false and the | 151 // even if |enabled| is unchanged. Only if |enabled| is false and the |
| 151 // magnifier is already disabled, we are sure that we don't need to reflect | 152 // magnifier is already disabled, we are sure that we don't need to reflect |
| 152 // the new settings right now because the magnifier keeps disabled. | 153 // the new settings right now because the magnifier keeps disabled. |
| 153 if (!enabled && !enabled_) | 154 if (!enabled && !enabled_) |
| 154 return; | 155 return; |
| 155 | 156 |
| 156 enabled_ = enabled; | 157 enabled_ = enabled; |
| 157 | 158 |
| 158 if (type_ == ui::MAGNIFIER_FULL) { | 159 if (type_ == ash::MAGNIFIER_FULL) { |
| 159 ash::Shell::GetInstance()->magnification_controller()->SetEnabled( | 160 ash::Shell::GetInstance()->magnification_controller()->SetEnabled( |
| 160 enabled_); | 161 enabled_); |
| 161 MonitorFocusInPageChange(); | 162 MonitorFocusInPageChange(); |
| 162 } else { | 163 } else { |
| 163 ash::Shell::GetInstance()->partial_magnification_controller()->SetEnabled( | 164 ash::Shell::GetInstance()->partial_magnification_controller()->SetEnabled( |
| 164 enabled_); | 165 enabled_); |
| 165 } | 166 } |
| 166 } | 167 } |
| 167 | 168 |
| 168 virtual void SetMagnifierTypeInternal(ui::MagnifierType type) { | 169 virtual void SetMagnifierTypeInternal(ash::MagnifierType type) { |
| 169 if (type_ == type) | 170 if (type_ == type) |
| 170 return; | 171 return; |
| 171 | 172 |
| 172 type_ = ui::MAGNIFIER_FULL; // (leave out for full magnifier) | 173 type_ = ash::MAGNIFIER_FULL; // (leave out for full magnifier) |
| 173 } | 174 } |
| 174 | 175 |
| 175 virtual void SetMagniferKeepFocusCenteredInternal(bool keep_focus_centered) { | 176 virtual void SetMagniferKeepFocusCenteredInternal(bool keep_focus_centered) { |
| 176 if (keep_focus_centered_ == keep_focus_centered) | 177 if (keep_focus_centered_ == keep_focus_centered) |
| 177 return; | 178 return; |
| 178 | 179 |
| 179 keep_focus_centered_ = keep_focus_centered; | 180 keep_focus_centered_ = keep_focus_centered; |
| 180 | 181 |
| 181 if (type_ == ui::MAGNIFIER_FULL) { | 182 if (type_ == ash::MAGNIFIER_FULL) { |
| 182 ash::Shell::GetInstance() | 183 ash::Shell::GetInstance() |
| 183 ->magnification_controller() | 184 ->magnification_controller() |
| 184 ->SetKeepFocusCentered(keep_focus_centered_); | 185 ->SetKeepFocusCentered(keep_focus_centered_); |
| 185 } | 186 } |
| 186 } | 187 } |
| 187 | 188 |
| 188 void UpdateMagnifierFromPrefs() { | 189 void UpdateMagnifierFromPrefs() { |
| 189 if (!profile_) | 190 if (!profile_) |
| 190 return; | 191 return; |
| 191 | 192 |
| 192 const bool enabled = profile_->GetPrefs()->GetBoolean( | 193 const bool enabled = profile_->GetPrefs()->GetBoolean( |
| 193 prefs::kAccessibilityScreenMagnifierEnabled); | 194 prefs::kAccessibilityScreenMagnifierEnabled); |
| 194 const int type_integer = profile_->GetPrefs()->GetInteger( | 195 const int type_integer = profile_->GetPrefs()->GetInteger( |
| 195 prefs::kAccessibilityScreenMagnifierType); | 196 prefs::kAccessibilityScreenMagnifierType); |
| 196 const bool keep_focus_centered = profile_->GetPrefs()->GetBoolean( | 197 const bool keep_focus_centered = profile_->GetPrefs()->GetBoolean( |
| 197 prefs::kAccessibilityScreenMagnifierCenterFocus); | 198 prefs::kAccessibilityScreenMagnifierCenterFocus); |
| 198 | 199 |
| 199 ui::MagnifierType type = ui::kDefaultMagnifierType; | 200 ash::MagnifierType type = ash::kDefaultMagnifierType; |
| 200 if (type_integer > 0 && type_integer <= ui::kMaxMagnifierType) { | 201 if (type_integer > 0 && type_integer <= ash::kMaxMagnifierType) { |
| 201 type = static_cast<ui::MagnifierType>(type_integer); | 202 type = static_cast<ash::MagnifierType>(type_integer); |
| 202 } else if (type_integer == 0) { | 203 } else if (type_integer == 0) { |
| 203 // Type 0 is used to disable the screen magnifier through policy. As the | 204 // Type 0 is used to disable the screen magnifier through policy. As the |
| 204 // magnifier type is irrelevant in this case, it is OK to just fall back | 205 // magnifier type is irrelevant in this case, it is OK to just fall back |
| 205 // to the default. | 206 // to the default. |
| 206 } else { | 207 } else { |
| 207 NOTREACHED(); | 208 NOTREACHED(); |
| 208 } | 209 } |
| 209 | 210 |
| 210 if (!enabled) { | 211 if (!enabled) { |
| 211 SetMagnifierEnabledInternal(enabled); | 212 SetMagnifierEnabledInternal(enabled); |
| 212 SetMagnifierTypeInternal(type); | 213 SetMagnifierTypeInternal(type); |
| 213 SetMagniferKeepFocusCenteredInternal(keep_focus_centered); | 214 SetMagniferKeepFocusCenteredInternal(keep_focus_centered); |
| 214 } else { | 215 } else { |
| 215 SetMagniferKeepFocusCenteredInternal(keep_focus_centered); | 216 SetMagniferKeepFocusCenteredInternal(keep_focus_centered); |
| 216 SetMagnifierTypeInternal(type); | 217 SetMagnifierTypeInternal(type); |
| 217 SetMagnifierEnabledInternal(enabled); | 218 SetMagnifierEnabledInternal(enabled); |
| 218 } | 219 } |
| 219 | 220 |
| 220 AccessibilityStatusEventDetails details( | 221 AccessibilityStatusEventDetails details( |
| 221 ACCESSIBILITY_TOGGLE_SCREEN_MAGNIFIER, | 222 ACCESSIBILITY_TOGGLE_SCREEN_MAGNIFIER, enabled_, type_, |
| 222 enabled_, | 223 ash::A11Y_NOTIFICATION_NONE); |
| 223 type_, | |
| 224 ui::A11Y_NOTIFICATION_NONE); | |
| 225 | 224 |
| 226 if (AccessibilityManager::Get()) { | 225 if (AccessibilityManager::Get()) { |
| 227 AccessibilityManager::Get()->NotifyAccessibilityStatusChanged(details); | 226 AccessibilityManager::Get()->NotifyAccessibilityStatusChanged(details); |
| 228 if (ash::Shell::GetInstance()) { | 227 if (ash::Shell::GetInstance()) { |
| 229 ash::Shell::GetInstance()->SetCursorCompositingEnabled( | 228 ash::Shell::GetInstance()->SetCursorCompositingEnabled( |
| 230 AccessibilityManager::Get()->ShouldEnableCursorCompositing()); | 229 AccessibilityManager::Get()->ShouldEnableCursorCompositing()); |
| 231 } | 230 } |
| 232 } | 231 } |
| 233 } | 232 } |
| 234 | 233 |
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| 283 } | 282 } |
| 284 } | 283 } |
| 285 } | 284 } |
| 286 | 285 |
| 287 Profile* profile_; | 286 Profile* profile_; |
| 288 | 287 |
| 289 AccessibilityManager::PrefHandler magnifier_enabled_pref_handler_; | 288 AccessibilityManager::PrefHandler magnifier_enabled_pref_handler_; |
| 290 AccessibilityManager::PrefHandler magnifier_type_pref_handler_; | 289 AccessibilityManager::PrefHandler magnifier_type_pref_handler_; |
| 291 AccessibilityManager::PrefHandler magnifier_scale_pref_handler_; | 290 AccessibilityManager::PrefHandler magnifier_scale_pref_handler_; |
| 292 | 291 |
| 293 ui::MagnifierType type_; | 292 ash::MagnifierType type_; |
| 294 bool enabled_; | 293 bool enabled_; |
| 295 bool keep_focus_centered_; | 294 bool keep_focus_centered_; |
| 296 bool observing_focus_change_in_page_; | 295 bool observing_focus_change_in_page_; |
| 297 | 296 |
| 298 content::NotificationRegistrar registrar_; | 297 content::NotificationRegistrar registrar_; |
| 299 std::unique_ptr<PrefChangeRegistrar> pref_change_registrar_; | 298 std::unique_ptr<PrefChangeRegistrar> pref_change_registrar_; |
| 300 std::unique_ptr<ash::ScopedSessionStateObserver> session_state_observer_; | 299 std::unique_ptr<ash::ScopedSessionStateObserver> session_state_observer_; |
| 301 | 300 |
| 302 DISALLOW_COPY_AND_ASSIGN(MagnificationManagerImpl); | 301 DISALLOW_COPY_AND_ASSIGN(MagnificationManagerImpl); |
| 303 }; | 302 }; |
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| 314 delete g_magnification_manager; | 313 delete g_magnification_manager; |
| 315 g_magnification_manager = NULL; | 314 g_magnification_manager = NULL; |
| 316 } | 315 } |
| 317 | 316 |
| 318 // static | 317 // static |
| 319 MagnificationManager* MagnificationManager::Get() { | 318 MagnificationManager* MagnificationManager::Get() { |
| 320 return g_magnification_manager; | 319 return g_magnification_manager; |
| 321 } | 320 } |
| 322 | 321 |
| 323 } // namespace chromeos | 322 } // namespace chromeos |
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