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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 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_base_export.h"
     15 #include "ui/base/x/x11_util.h"
     16 #include "ui/gfx/display.h"
     17 
     18 namespace ui {
     19 
     20 class UI_BASE_EXPORT CursorLoaderX11 : public CursorLoader {
     21  public:
     22   CursorLoaderX11();
     23   virtual ~CursorLoaderX11();
     24 
     25   // Overridden from CursorLoader:
     26   virtual void LoadImageCursor(int id,
     27                                int resource_id,
     28                                const gfx::Point& hot) OVERRIDE;
     29   virtual void LoadAnimatedCursor(int id,
     30                                   int resource_id,
     31                                   const gfx::Point& hot,
     32                                   int frame_delay_ms) OVERRIDE;
     33   virtual void UnloadAll() OVERRIDE;
     34   virtual void SetPlatformCursor(gfx::NativeCursor* cursor) OVERRIDE;
     35 
     36   const XcursorImage* GetXcursorImageForTest(int id);
     37 
     38  private:
     39   // Returns true if we have an image resource loaded for the |native_cursor|.
     40   bool IsImageCursor(gfx::NativeCursor native_cursor);
     41 
     42   // Gets the X Cursor corresponding to the |native_cursor|.
     43   ::Cursor ImageCursorFromNative(gfx::NativeCursor native_cursor);
     44 
     45   // A map to hold all image cursors. It maps the cursor ID to the X Cursor.
     46   typedef std::map<int, ::Cursor> ImageCursorMap;
     47   ImageCursorMap cursors_;
     48 
     49   // A map to hold all animated cursors. It maps the cursor ID to the pair of
     50   // the X Cursor and the corresponding XcursorImages. We need a pointer to the
     51   // images so that we can free them on destruction.
     52   typedef std::map<int, std::pair< ::Cursor, XcursorImages*> >
     53       AnimatedCursorMap;
     54   AnimatedCursorMap animated_cursors_;
     55 
     56   const XScopedCursor invisible_cursor_;
     57 
     58   DISALLOW_COPY_AND_ASSIGN(CursorLoaderX11);
     59 };
     60 
     61 }  // namespace ui
     62 
     63 #endif  // UI_BASE_CURSOR_CURSOR_LOADER_X11_H_
     64