| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROME_BROWSER_CHROMEOS_ACCESSIBILITY_MAGNIFICATION_MANAGER_H_ |
| #define CHROME_BROWSER_CHROMEOS_ACCESSIBILITY_MAGNIFICATION_MANAGER_H_ |
| |
| #include "chrome/browser/chromeos/accessibility/accessibility_manager.h" |
| |
| class Profile; |
| |
| namespace chromeos { |
| |
| // MagnificationManager controls the full screen magnifier from chrome-browser |
| // side (not ash side). |
| // |
| // MagnificationManager does: |
| // - Watch logged-in. Changes the behavior between the login screen and user |
| // desktop. |
| // - Watch change of the pref. When the pref changes, the setting of the |
| // magnifier will interlock with it. |
| |
| class MagnificationManager { |
| public: |
| // Creates an instance of MagnificationManager. This should be called once, |
| // Returns the existing instance. If there is no instance, creates one. |
| // because only one instance should exist at the same time. |
| static void Initialize(); |
| |
| // Deletes the existing instance of MagnificationManager. |
| static void Shutdown(); |
| |
| // Returns the existing instance. If there is no instance, returns NULL. |
| static MagnificationManager* Get(); |
| |
| // Returns if the screen magnifier is enabled. |
| virtual bool IsMagnifierEnabled() const = 0; |
| |
| // Returns the current type of the screen magnifier. |
| virtual ash::MagnifierType GetMagnifierType() const = 0; |
| |
| // Enables the screen magnifier. |
| virtual void SetMagnifierEnabled(bool enabled) = 0; |
| |
| // Changes the type of the screen magnifier. |
| virtual void SetMagnifierType(ash::MagnifierType type) = 0; |
| |
| // Saves the magnifier scale to the pref. |
| virtual void SaveScreenMagnifierScale(double scale) = 0; |
| |
| // Loads the magnifier scale from the pref. |
| virtual double GetSavedScreenMagnifierScale() const = 0; |
| |
| virtual void SetProfileForTest(Profile* profile) = 0; |
| |
| protected: |
| virtual ~MagnificationManager() {} |
| }; |
| |
| } // namespace chromeos |
| |
| #endif // CHROME_BROWSER_CHROMEOS_ACCESSIBILITY_MAGNIFICATION_MANAGER_H_ |