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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_PARTIAL_MAGNIFICATION_CONTROLLER_H_ | 5 #ifndef ASH_MAGNIFIER_PARTIAL_MAGNIFICATION_CONTROLLER_H_ |
6 #define ASH_MAGNIFIER_PARTIAL_MAGNIFICATION_CONTROLLER_H_ | 6 #define ASH_MAGNIFIER_PARTIAL_MAGNIFICATION_CONTROLLER_H_ |
7 | 7 |
8 #include "base/macros.h" | 8 #include "base/macros.h" |
9 #include "ui/aura/window_observer.h" | 9 #include "ui/aura/window_observer.h" |
10 #include "ui/events/event_handler.h" | 10 #include "ui/events/event_handler.h" |
11 #include "ui/gfx/geometry/point.h" | 11 #include "ui/gfx/geometry/point.h" |
12 #include "ui/views/widget/widget_observer.h" | 12 #include "ui/views/widget/widget_observer.h" |
13 | 13 |
14 namespace ash { | 14 namespace ash { |
15 | 15 |
16 const float kDefaultPartialMagnifiedScale = 1.5f; | 16 const float kDefaultPartialMagnifiedScale = 1.5f; |
17 const float kNonPartialMagnifiedScale = 1.0f; | 17 const float kNonPartialMagnifiedScale = 1.0f; |
18 | 18 |
19 // Controls the partial screen magnifier, which is a small area of the screen | 19 // Controls the partial screen magnifier, which is a small area of the screen |
20 // which is zoomed in. The zoomed area follows the mouse cursor when enabled. | 20 // which is zoomed in. The zoomed area follows the mouse cursor when enabled. |
21 class PartialMagnificationController | 21 class PartialMagnificationController : public ui::EventHandler, |
22 : public ui::EventHandler, | 22 public aura::WindowObserver, |
23 public aura::WindowObserver, | 23 public views::WidgetObserver { |
24 public views::WidgetObserver { | |
25 public: | 24 public: |
26 PartialMagnificationController(); | 25 PartialMagnificationController(); |
27 ~PartialMagnificationController() override; | 26 ~PartialMagnificationController() override; |
28 | 27 |
29 // Enables (or disables if |enabled| is false) partial screen magnifier | 28 // Enables (or disables if |enabled| is false) partial screen magnifier |
30 // feature. | 29 // feature. |
31 virtual void SetEnabled(bool enabled); | 30 virtual void SetEnabled(bool enabled); |
32 | 31 |
33 bool is_enabled() const { return is_enabled_; } | 32 bool is_enabled() const { return is_enabled_; } |
34 | 33 |
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79 gfx::Point origin_; | 78 gfx::Point origin_; |
80 | 79 |
81 views::Widget* zoom_widget_; | 80 views::Widget* zoom_widget_; |
82 | 81 |
83 DISALLOW_COPY_AND_ASSIGN(PartialMagnificationController); | 82 DISALLOW_COPY_AND_ASSIGN(PartialMagnificationController); |
84 }; | 83 }; |
85 | 84 |
86 } // namespace ash | 85 } // namespace ash |
87 | 86 |
88 #endif // ASH_MAGNIFIER_PARTIAL_MAGNIFICATION_CONTROLLER_H_ | 87 #endif // ASH_MAGNIFIER_PARTIAL_MAGNIFICATION_CONTROLLER_H_ |
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