ash/wm/image_cursors.h

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