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      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
      3 // found in the LICENSE file.
      4 
      5 #ifndef ASH_WM_IMAGE_CURSORS_H_
      6 #define ASH_WM_IMAGE_CURSORS_H_
      7 
      8 #include "ash/ash_export.h"
      9 #include "base/memory/scoped_ptr.h"
     10 #include "base/strings/string16.h"
     11 #include "ui/base/cursor/cursor.h"
     12 #include "ui/gfx/native_widget_types.h"
     13 
     14 namespace gfx {
     15 class Display;
     16 }
     17 
     18 namespace ui {
     19 class CursorLoader;
     20 }
     21 
     22 namespace ash {
     23 
     24 // A utility class that provides cursors for NativeCursors for which we have
     25 // image resources.
     26 class ASH_EXPORT ImageCursors {
     27  public:
     28   ImageCursors();
     29   ~ImageCursors();
     30 
     31   // Returns the display the cursors are loaded for. The display must
     32   // be set by SetDisplay before using this.
     33   gfx::Display GetDisplay() const;
     34 
     35   // Sets the display the cursors are loaded for. The device scale factor
     36   // determines the size of the image to load, and the rotation of the display
     37   // determines if the image and its host point has to be retated.
     38   // Returns true if the cursor image is reloaded.
     39   bool SetDisplay(const gfx::Display& display);
     40 
     41   // Sets the scale of the mouse cursor icon.
     42   void SetScale(float scale);
     43 
     44   // Sets the type of the mouse cursor icon.
     45   void SetCursorSet(ui::CursorSetType cursor_set);
     46 
     47   // Sets the platform cursor based on the native type of |cursor|.
     48   void SetPlatformCursor(gfx::NativeCursor* cursor);
     49 
     50  private:
     51   // Reloads the all loaded cursors in the cursor loader.
     52   void ReloadCursors();
     53 
     54   scoped_ptr<ui::CursorLoader> cursor_loader_;
     55   float scale_;
     56   ui::CursorSetType cursor_set_;
     57 
     58   DISALLOW_COPY_AND_ASSIGN(ImageCursors);
     59 };
     60 
     61 }  // namespace ash
     62 
     63 #endif  // ASH_WM_IMAGE_CURSORS_H_
     64