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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 #ifndef ASH_MAGNIFIER_MAGNIFICATION_CONTROLLER_H_ | 5 #ifndef ASH_MAGNIFIER_MAGNIFICATION_CONTROLLER_H_ |
6 #define ASH_MAGNIFIER_MAGNIFICATION_CONTROLLER_H_ | 6 #define ASH_MAGNIFIER_MAGNIFICATION_CONTROLLER_H_ |
7 | 7 |
8 #include "base/compiler_specific.h" | 8 #include "base/compiler_specific.h" |
9 #include "base/logging.h" | 9 #include "base/logging.h" |
10 #include "base/memory/scoped_ptr.h" | 10 #include "base/memory/scoped_ptr.h" |
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21 public: | 21 public: |
22 virtual ~MagnificationController() {} | 22 virtual ~MagnificationController() {} |
23 | 23 |
24 // Creates a new MagnificationController. The caller takes ownership of the | 24 // Creates a new MagnificationController. The caller takes ownership of the |
25 // returned object. | 25 // returned object. |
26 static MagnificationController* CreateInstance(); | 26 static MagnificationController* CreateInstance(); |
27 | 27 |
28 // Enables (or disables if |enabled| is false) screen magnifier feature. | 28 // Enables (or disables if |enabled| is false) screen magnifier feature. |
29 virtual void SetEnabled(bool enabled) = 0; | 29 virtual void SetEnabled(bool enabled) = 0; |
30 | 30 |
| 31 // Returns if the screen magnifier is enabled or not. |
31 virtual bool IsEnabled() const = 0; | 32 virtual bool IsEnabled() const = 0; |
32 | 33 |
33 // Sets the magnification ratio. 1.0f means no magnification. | 34 // Sets the magnification ratio. 1.0f means no magnification. |
34 virtual void SetScale(float scale, bool animate) = 0; | 35 virtual void SetScale(float scale, bool animate) = 0; |
35 // Returns the current magnification ratio. | 36 // Returns the current magnification ratio. |
36 virtual float GetScale() const = 0; | 37 virtual float GetScale() const = 0; |
37 | 38 |
38 // Set the top-left point of the magnification window. | 39 // Set the top-left point of the magnification window. |
39 virtual void MoveWindow(int x, int y, bool animate) = 0; | 40 virtual void MoveWindow(int x, int y, bool animate) = 0; |
40 virtual void MoveWindow(const gfx::Point& point, bool animate) = 0; | 41 virtual void MoveWindow(const gfx::Point& point, bool animate) = 0; |
41 // Returns the current top-left point of the magnification window. | 42 // Returns the current top-left point of the magnification window. |
42 virtual gfx::Point GetWindowPosition() const = 0; | 43 virtual gfx::Point GetWindowPosition() const = 0; |
43 | 44 |
44 // Ensures that the given point/rect is inside the magnification window. If | 45 // Ensures that the given point/rect is inside the magnification window. If |
45 // not, the controller moves the window to contain the given point/rect. | 46 // not, the controller moves the window to contain the given point/rect. |
46 virtual void EnsureRectIsVisible(const gfx::Rect& rect, bool animate) = 0; | 47 virtual void EnsureRectIsVisible(const gfx::Rect& rect, bool animate) = 0; |
47 virtual void EnsurePointIsVisible(const gfx::Point& point, bool animate) = 0; | 48 virtual void EnsurePointIsVisible(const gfx::Point& point, bool animate) = 0; |
48 | 49 |
49 protected: | 50 protected: |
50 MagnificationController() {} | 51 MagnificationController() {} |
51 }; | 52 }; |
52 | 53 |
53 } // namespace ash | 54 } // namespace ash |
54 | 55 |
55 #endif // ASH_MAGNIFIER_MAGNIFICATION_CONTROLLER_H_ | 56 #endif // ASH_MAGNIFIER_MAGNIFICATION_CONTROLLER_H_ |
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