option to return drawable from recording

src/core/SkRecorder.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkRecorder_DEFINED
 #define SkRecorder_DEFINED
 
 #include "SkCanvas.h"
 #include "SkRecord.h"
 #include "SkRecords.h"
 #include "SkTDArray.h"
 
+class SkBBHFactory;
+
+class SkCanvasDrawableList : SkNoncopyable {
+public:
+    ~SkCanvasDrawableList();
+
+    int count() const { return fArray.count(); }
+    SkCanvasDrawable* const* begin() const { return fArray.begin(); }
+
+    void append(SkCanvasDrawable* drawable);
+
+    // Return a new or ref'd array of pictures that were snapped from our drawables.
+    SkPicture::SnapshotArray* newDrawableSnapshot();
+
+private:
+    SkTDArray<SkCanvasDrawable*> fArray;
+};
+
 // SkRecorder provides an SkCanvas interface for recording into an SkRecord.
 
 class SkRecorder : public SkCanvas {
 public:
     // Does not take ownership of the SkRecord.
     SkRecorder(SkRecord*, int width, int height);   // legacy version
     SkRecorder(SkRecord*, const SkRect& bounds);
-    virtual ~SkRecorder() SK_OVERRIDE;
 
-    // Return a new or ref'd array of pictures that were snapped from our drawables.
+    SkCanvasDrawableList* detachDrawableList() {
+        return fDrawableList.detach();
+    }
+
     SkPicture::SnapshotArray* newDrawableSnapshot(SkBBHFactory*, uint32_t recordFlags);
 
     // Make SkRecorder forget entirely about its SkRecord*; all calls to SkRecorder will fail.
     void forgetRecord();
 
     void clear(SkColor) SK_OVERRIDE;
     void drawPaint(const SkPaint& paint) SK_OVERRIDE;
     void drawPoints(PointMode mode,
                     size_t count,
                     const SkPoint pts[],
@@ skipping 102 matching lines @@
     SkIRect devBounds() const {
         SkIRect devBounds;
         this->getClipDeviceBounds(&devBounds);
         return devBounds;
     }
 
     SkRecord* fRecord;
 
     int fSaveLayerCount;
     SkTDArray<SkBool8> fSaveIsSaveLayer;
-    SkTDArray<SkCanvasDrawable*> fDrawableList;
+    SkAutoTDelete<SkCanvasDrawableList> fDrawableList;
 };
 
 #endif//SkRecorder_DEFINED