SkPictureImageGenerator

include/core/SkImageGenerator.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkImageGenerator_DEFINED
 #define SkImageGenerator_DEFINED
 
 #include "SkColor.h"
 #include "SkImageInfo.h"
 
 class SkBitmap;
 class SkData;
 class SkImageGenerator;
+class SkMatrix;
+class SkPaint;
+class SkPicture;
 
 /**
  *  Takes ownership of SkImageGenerator.  If this method fails for
  *  whatever reason, it will return false and immediatetely delete
  *  the generator.  If it succeeds, it will modify destination
  *  bitmap.
  *
  *  If generator is NULL, will safely return false.
  *
  *  If this fails or when the SkDiscardablePixelRef that is
@@ skipping 92 matching lines @@
     bool getYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3],
                        SkYUVColorSpace* colorSpace);
 
     /**
      *  If the default image decoder system can interpret the specified (encoded) data, then
      *  this returns a new ImageGenerator for it. Otherwise this returns NULL. Either way
      *  the caller is still responsible for managing their ownership of the data.
      */
     static SkImageGenerator* NewFromEncoded(SkData*);
 
+    /** Return a new image generator backed by the specified picture.  If the size is empty or
+     *  the picture is NULL, this returns NULL.
+     *  The optional matrix and paint arguments are passed to drawPicture() at rasterization
+     *  time.
+     */
+    static SkImageGenerator* NewFromPicture(const SkISize&, const SkPicture*, const SkMatrix*,
+                                            const SkPaint*);
+
 protected:
     SkImageGenerator(const SkImageInfo& info) : fInfo(info) {}
 
     virtual SkData* onRefEncodedData();
 
     virtual bool onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes,
                              SkPMColor ctable[], int* ctableCount);
     virtual bool onGetYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3]);
     virtual bool onGetYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3],
                                  SkYUVColorSpace* colorSpace);
 
 private:
     const SkImageInfo fInfo;
 
     // This is our default impl, which may be different on different platforms.
     // It is called from NewFromEncoded() after it has checked for any runtime factory.
     // The SkData will never be NULL, as that will have been checked by NewFromEncoded.
     static SkImageGenerator* NewFromEncodedImpl(SkData*);
 };
 
 #endif  // SkImageGenerator_DEFINED