WIP RasterCanvasLayerAllocator experiment 2

include/core/SkDevice.h

 /*
  * Copyright 2010 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkDevice_DEFINED
 #define SkDevice_DEFINED
 
 #include "SkRefCnt.h"
 #include "SkCanvas.h"
 #include "SkColor.h"
 #include "SkSurfaceProps.h"
 
 class SkBitmap;
 class SkClipStack;
 class SkDraw;
 class SkDrawFilter;
 class SkImageFilterCache;
 struct SkIRect;
 class SkMatrix;
 class SkMetaData;
+class SkRasterCanvasLayerAllocator;
 class SkRegion;
 class SkSpecialImage;
 class GrRenderTarget;
 
 class SK_API SkBaseDevice : public SkRefCnt {
 public:
     /**
      *  Construct a new device.
     */
     explicit SkBaseDevice(const SkImageInfo&, const SkSurfaceProps&);
@@ skipping 274 matching lines @@
      *  Create a new device based on CreateInfo. If the paint is not null, then it represents a
      *  preview of how the new device will be composed with its creator device (this).
      *
      *  The subclass may be handed this device in drawDevice(), so it must always return
      *  a device that it knows how to draw, and that it knows how to identify if it is not of the
      *  same subclass (since drawDevice is passed a SkBaseDevice*). If the subclass cannot fulfill
      *  that contract (e.g. PDF cannot support some settings on the paint) it should return NULL,
      *  and the caller may then decide to explicitly create a bitmapdevice, knowing that later
      *  it could not call drawDevice with it (but it could call drawSprite or drawBitmap).
      */
-    virtual SkBaseDevice* onCreateDevice(const CreateInfo&, const SkPaint*) {
+    virtual SkBaseDevice* onCreateDevice(const CreateInfo&, const SkPaint*,
+                                         SkRasterCanvasLayerAllocator*) {
         return NULL;
     }
 
     // A helper function used by derived classes to log the scale factor of a bitmap or image draw.
     static void LogDrawScaleFactor(const SkMatrix&, SkFilterQuality);
 
 private:
     friend class SkCanvas;
     friend struct DeviceCM; //for setMatrixClip
     friend class SkDraw;
@@ skipping 36 matching lines @@
     const SkSurfaceProps fSurfaceProps;
 
 #ifdef SK_SUPPORT_LEGACY_ACCESSBITMAP
     SkBitmap    fLegacyBitmap;
 #endif
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif