Add a means of extracting active operations from SkPicture

include/core/SkPicture.h

 
 /*
  * Copyright 2007 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 SkPicture_DEFINED
 #define SkPicture_DEFINED
 
 #include "SkBitmap.h"
 #include "SkImageDecoder.h"
 #include "SkRefCnt.h"
+#include "SkTDArray.h"
 
 class SkBBoxHierarchy;
 class SkCanvas;
 class SkDrawPictureCallback;
 class SkData;
 class SkPicturePlayback;
 class SkPictureRecord;
 class SkStream;
 class SkWStream;
 
@@ skipping 115 matching lines @@
         not active. This does not alter the refcnt on the canvas (if present).
     */
     SkCanvas* getRecordingCanvas() const;
     /** Signal that the caller is done recording. This invalidates the canvas
         returned by beginRecording/getRecordingCanvas, and prepares the picture
         for drawing. Note: this happens implicitly the first time the picture
         is drawn.
     */
     void endRecording();
 
+    /** PRIVATE / EXPERIMENTAL -- do not call
+        Return the operations required to render the content inside
+        queryRect. A NULL return value means all the operations are needed.
+        A non-NULL but zero sized array means there is nothing to draw.
+    */
+    const SkTDArray<void*>* EXPERIMENTAL_getActiveOps(const SkIRect& queryRect);
+
     /** Replays the drawing commands on the specified canvas. This internally
         calls endRecording() if that has not already been called.
         @param canvas the canvas receiving the drawing commands.
     */
     void draw(SkCanvas* canvas, SkDrawPictureCallback* = NULL);
 
     /** Return the width of the picture's recording canvas. This
         value reflects what was passed to setSize(), and does not necessarily
         reflect the bounds of what has been recorded into the picture.
         @return the width of the picture's recording canvas
@@ skipping 134 matching lines @@
  */
 class SK_API SkDrawPictureCallback {
 public:
     SkDrawPictureCallback() {}
     virtual ~SkDrawPictureCallback() {}
 
     virtual bool abortDrawing() = 0;
 };
 
 #endif