Canvas refactoring part 3....

gfx/canvas_skia.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef GFX_CANVAS_SKIA_H_
 #define GFX_CANVAS_SKIA_H_
 
 #include "base/basictypes.h"
-#include "gfx/canvas_2.h"
+#include "gfx/canvas.h"
 #include "skia/ext/platform_canvas.h"
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 typedef struct _GdkPixbuf GdkPixbuf;
 #endif
 
 namespace gfx {
 
 class Canvas;
 
 // CanvasSkia is a SkCanvas subclass that provides a number of methods for
 // common operations used throughout an application built using base/gfx and
 // app/gfx.
 //
 // All methods that take integer arguments (as is used throughout views)
 // end with Int. If you need to use methods provided by the superclass
 // you'll need to do a conversion. In particular you'll need to use
 // macro SkIntToScalar(xxx), or if converting from a scalar to an integer
 // SkScalarRound.
 //
 // A handful of methods in this class are overloaded providing an additional
 // argument of type SkXfermode::Mode. SkXfermode::Mode specifies how the
 // source and destination colors are combined. Unless otherwise specified,
 // the variant that does not take a SkXfermode::Mode uses a transfer mode
 // of kSrcOver_Mode.
 class CanvasSkia : public skia::PlatformCanvas,
-                   public Canvas2 {
+                   public Canvas {
  public:
   // Creates an empty Canvas. Callers must use initialize before using the
   // canvas.
   CanvasSkia();
 
   CanvasSkia(int width, int height, bool is_opaque);
 
   virtual ~CanvasSkia();
 
   // Compute the size required to draw some text with the provided font.
@@ skipping 62 matching lines @@
                              const SkColor& color,
                              const gfx::Rect& display_rect);
   virtual void DrawStringInt(const std::wstring& text, const gfx::Font& font,
                              const SkColor& color, int x, int y, int w, int h,
                              int flags);
   virtual void DrawFocusRect(int x, int y, int width, int height);
   virtual void TileImageInt(const SkBitmap& bitmap, int x, int y, int w, int h);
   virtual void TileImageInt(const SkBitmap& bitmap, int src_x, int src_y,
                             int dest_x, int dest_y, int w, int h);
   virtual SkBitmap ExtractBitmap() const;
+  virtual CanvasSkia* AsCanvasSkia();
+  virtual const CanvasSkia* AsCanvasSkia() const;
 
  private:
 #if defined(OS_WIN)
   // Draws text with the specified color, font and location. The text is
   // aligned to the left, vertically centered, clipped to the region. If the
   // text is too big, it is truncated and '...' is added to the end.
   void DrawStringInt(const std::wstring& text, HFONT font,
                      const SkColor& color, int x, int y, int w, int h,
                      int flags);
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(CanvasSkia);
 };
 
 }  // namespace gfx;
 
 #endif  // GFX_CANVAS_SKIA_H_