cursor_loader_x11.h revision 2a99a7e74a7f215066514fe81d2bfa6639d9eddd 
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 UI_BASE_CURSOR_CURSOR_LOADER_X11_H_
6#define UI_BASE_CURSOR_CURSOR_LOADER_X11_H_
7
8#include <X11/Xcursor/Xcursor.h>
9#include <map>
10
11#include "base/compiler_specific.h"
12#include "ui/base/cursor/cursor.h"
13#include "ui/base/cursor/cursor_loader.h"
14#include "ui/base/ui_export.h"
15#include "ui/base/x/x11_util.h"
16
17namespace ui {
18
19class UI_EXPORT CursorLoaderX11 : public CursorLoader {
20 public:
21  CursorLoaderX11();
22  virtual ~CursorLoaderX11();
23
24  // Overridden from CursorLoader:
25  virtual void LoadImageCursor(int id,
26                               int resource_id,
27                               const gfx::Point& hot) OVERRIDE;
28  virtual void LoadAnimatedCursor(int id,
29                                  int resource_id,
30                                  const gfx::Point& hot,
31                                  int frame_delay_ms) OVERRIDE;
32  virtual void UnloadAll() OVERRIDE;
33  virtual void SetPlatformCursor(gfx::NativeCursor* cursor) OVERRIDE;
34  virtual void SetCursorResourceModule(const string16& module_name) OVERRIDE {
35  }
36
37 private:
38  // Returns true if we have an image resource loaded for the |native_cursor|.
39  bool IsImageCursor(gfx::NativeCursor native_cursor);
40
41  // Gets the X Cursor corresponding to the |native_cursor|.
42  ::Cursor ImageCursorFromNative(gfx::NativeCursor native_cursor);
43
44  // A map to hold all image cursors. It maps the cursor ID to the X Cursor.
45  typedef std::map<int, ::Cursor> ImageCursorMap;
46  ImageCursorMap cursors_;
47
48  // A map to hold all animated cursors. It maps the cursor ID to the pair of
49  // the X Cursor and the corresponding XcursorImages. We need a pointer to the
50  // images so that we can free them on destruction.
51  typedef std::map<int, std::pair< ::Cursor, XcursorImages*> >
52      AnimatedCursorMap;
53  AnimatedCursorMap animated_cursors_;
54
55  const XScopedCursor invisible_cursor_;
56
57  DISALLOW_COPY_AND_ASSIGN(CursorLoaderX11);
58};
59
60}  // namespace ui
61
62#endif  // UI_BASE_CURSOR_CURSOR_LOADER_X11_H_
63