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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" |
11 #include "ui/gfx/point.h" | 11 #include "ui/gfx/point.h" |
12 #include "ui/gfx/rect.h" | 12 #include "ui/gfx/rect.h" |
13 | 13 |
14 namespace aura { | 14 namespace aura { |
15 class RootWindow; | 15 class RootWindow; |
16 } | 16 } |
17 | 17 |
18 namespace ash { | 18 namespace ash { |
19 namespace internal { | |
20 | 19 |
21 class MagnificationController { | 20 class MagnificationController { |
22 public: | 21 public: |
23 virtual ~MagnificationController() {} | 22 virtual ~MagnificationController() {} |
24 | 23 |
25 // Creates a new MagnificationController. The caller takes ownership of the | 24 // Creates a new MagnificationController. The caller takes ownership of the |
26 // returned object. | 25 // returned object. |
27 static MagnificationController* CreateInstance(); | 26 static MagnificationController* CreateInstance(); |
28 | 27 |
29 // Enables (or disables if |enabled| is false) screen magnifier feature. | 28 // Enables (or disables if |enabled| is false) screen magnifier feature. |
30 virtual void SetEnabled(bool enabled) = 0; | 29 virtual void SetEnabled(bool enabled) = 0; |
31 | 30 |
| 31 virtual bool IsEnabled() const = 0; |
| 32 |
32 // Sets the magnification ratio. 1.0f means no magnification. | 33 // Sets the magnification ratio. 1.0f means no magnification. |
33 virtual void SetScale(float scale, bool animate) = 0; | 34 virtual void SetScale(float scale, bool animate) = 0; |
34 // Returns the current magnification ratio. | 35 // Returns the current magnification ratio. |
35 virtual float GetScale() const = 0; | 36 virtual float GetScale() const = 0; |
36 | 37 |
37 // Set the top-left point of the magnification window. | 38 // Set the top-left point of the magnification window. |
38 virtual void MoveWindow(int x, int y, bool animate) = 0; | 39 virtual void MoveWindow(int x, int y, bool animate) = 0; |
39 virtual void MoveWindow(const gfx::Point& point, bool animate) = 0; | 40 virtual void MoveWindow(const gfx::Point& point, bool animate) = 0; |
40 // Returns the current top-left point of the magnification window. | 41 // Returns the current top-left point of the magnification window. |
41 virtual gfx::Point GetWindowPosition() const = 0; | 42 virtual gfx::Point GetWindowPosition() const = 0; |
42 | 43 |
43 // Ensures that the given point/rect is inside the magnification window. If | 44 // Ensures that the given point/rect is inside the magnification window. If |
44 // not, the controller moves the window to contain the given point/rect. | 45 // not, the controller moves the window to contain the given point/rect. |
45 virtual void EnsureRectIsVisible(const gfx::Rect& rect, bool animate) = 0; | 46 virtual void EnsureRectIsVisible(const gfx::Rect& rect, bool animate) = 0; |
46 virtual void EnsurePointIsVisible(const gfx::Point& point, bool animate) = 0; | 47 virtual void EnsurePointIsVisible(const gfx::Point& point, bool animate) = 0; |
47 | 48 |
48 protected: | 49 protected: |
49 MagnificationController() {} | 50 MagnificationController() {} |
50 }; | 51 }; |
51 | 52 |
52 } // namespace internal | |
53 } // namespace ash | 53 } // namespace ash |
54 | 54 |
55 #endif // ASH_MAGNIFIER_MAGNIFICATION_CONTROLLER_H_ | 55 #endif // ASH_MAGNIFIER_MAGNIFICATION_CONTROLLER_H_ |
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