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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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