[CLOSED] In-browser software compositing

cc/software_output_device.h

 // Copyright 2012 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 CC_SOFTWARE_OUTPUT_DEVICE_H_
 #define CC_SOFTWARE_OUTPUT_DEVICE_H_
 
-#include "third_party/WebKit/Source/Platform/chromium/public/WebImage.h"
+#include "cc/cc_export.h"
+#include "ui/gfx/rect.h"
 #include "ui/gfx/size.h"
+#include "ui/gfx/vector2d.h"
+
+class SkBitmap;
+class SkCanvas;
 
 namespace cc {
 
 // This is a "tear-off" class providing software drawing support to
 // OutputSurface, such as to a platform-provided window framebuffer.
-class SoftwareOutputDevice {
+class CC_EXPORT SoftwareOutputDevice {
  public:
   virtual ~SoftwareOutputDevice() {}
 
-  // Lock the framebuffer and return a pointer to a WebImage referring to its
-  // pixels. Set forWrite if you intend to change the pixels. Readback
-  // is supported whether or not forWrite is set.
-  // TODO(danakj): Switch this from WebImage to a Skia type.
-  virtual WebKit::WebImage* Lock(bool forWrite) = 0;
-  virtual void Unlock() = 0;
+  virtual void Resize(const gfx::Size& size) = 0;
 
-  virtual void DidChangeViewportSize(gfx::Size) = 0;
+  virtual SkCanvas* BeginPaint() = 0;
+  virtual void EndPaint(const gfx::Rect& damage_rect) = 0;
+
+  virtual void CopyToBitmap(const gfx::Rect& rect, SkBitmap* output) = 0;
+
+  virtual void Scroll(const gfx::Vector2d& delta,
+                      const gfx::Rect& clip_rect) = 0;
 };
 
 }  // namespace cc
 
 #endif // CC_SOFTWARE_OUTPUT_DEVICE_H_