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|   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. |   1 // Copyright (c) 2013 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 UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_CURSOR_LOADER_UPDATER_H_ |   5 #ifndef UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_CURSOR_LOADER_UPDATER_H_ | 
|   6 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_CURSOR_LOADER_UPDATER_H_ |   6 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_CURSOR_LOADER_UPDATER_H_ | 
|   7  |   7  | 
|   8 #include <memory> |   8 #include <memory> | 
|   9  |   9  | 
|  10 #include "ui/views/views_export.h" |  10 #include "ui/views/views_export.h" | 
|  11  |  11  | 
|  12 namespace aura { |  12 namespace aura { | 
|  13 class RootWindow; |  13 class RootWindow; | 
|  14 } |  14 } | 
|  15  |  15  | 
|  16 namespace gfx { |  16 namespace display { | 
|  17 class Display; |  17 class Display; | 
|  18 } |  18 } | 
|  19  |  19  | 
|  20 namespace display { |  | 
|  21 using Display = gfx::Display; |  | 
|  22 } |  | 
|  23  |  | 
|  24 namespace ui { |  20 namespace ui { | 
|  25 class CursorLoader; |  21 class CursorLoader; | 
|  26 } |  22 } | 
|  27  |  23  | 
|  28 namespace views { |  24 namespace views { | 
|  29  |  25  | 
|  30 // An interface to optionally update the state of a cursor loader. Only used on |  26 // An interface to optionally update the state of a cursor loader. Only used on | 
|  31 // desktop AuraX11. |  27 // desktop AuraX11. | 
|  32 class VIEWS_EXPORT DesktopCursorLoaderUpdater { |  28 class VIEWS_EXPORT DesktopCursorLoaderUpdater { | 
|  33  public: |  29  public: | 
|  34   virtual ~DesktopCursorLoaderUpdater() {} |  30   virtual ~DesktopCursorLoaderUpdater() {} | 
|  35  |  31  | 
|  36   // Creates a new DesktopCursorLoaderUpdater, or NULL if the platform doesn't |  32   // Creates a new DesktopCursorLoaderUpdater, or NULL if the platform doesn't | 
|  37   // support one. |  33   // support one. | 
|  38   static std::unique_ptr<DesktopCursorLoaderUpdater> Create(); |  34   static std::unique_ptr<DesktopCursorLoaderUpdater> Create(); | 
|  39  |  35  | 
|  40   // Called when a CursorLoader is created. |  36   // Called when a CursorLoader is created. | 
|  41   virtual void OnCreate(float device_scale_factor, |  37   virtual void OnCreate(float device_scale_factor, | 
|  42                         ui::CursorLoader* loader) = 0; |  38                         ui::CursorLoader* loader) = 0; | 
|  43  |  39  | 
|  44   // Called when the display has changed (as we may need to reload the cursor |  40   // Called when the display has changed (as we may need to reload the cursor | 
|  45   // assets in response to a device scale factor or rotation change). |  41   // assets in response to a device scale factor or rotation change). | 
|  46   virtual void OnDisplayUpdated(const display::Display& display, |  42   virtual void OnDisplayUpdated(const display::Display& display, | 
|  47                                 ui::CursorLoader* loader) = 0; |  43                                 ui::CursorLoader* loader) = 0; | 
|  48 }; |  44 }; | 
|  49  |  45  | 
|  50 }  // namespace views |  46 }  // namespace views | 
|  51  |  47  | 
|  52 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_DISPLAY_CHANGE_HANDLER_H_ |  48 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_DISPLAY_CHANGE_HANDLER_H_ | 
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