Implement SkRecord::willPlaybackBitmaps, cache in SkPicture

include/record/SkRecording.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 SkRecording_DEFINED
 #define SkRecording_DEFINED
 
@@ skipping 26 matching lines @@
  */
 
 class SK_API SkPlayback : SkNoncopyable {
 public:
     // Remember, if you've got an SkPlayback*, you probably own it.  Don't forget to delete it!
     ~SkPlayback();
 
     // Draw recorded commands into a canvas.
     void draw(SkCanvas*) const;
 
+    bool willPlaybackBitmaps() const { return fWillPlaybackBitmaps; }

[mtklein, 2014/07/01 18:58:01]

This file and all its classes will be deleted.

I think you want to implement this in SkPicture.cpp, and cache it there if you
cache it?

[mtklein, 2014/07/01 19:02:23]

Alternatively, we can do it proactively in SkPictureRecorder::endRecording() if
you'd like to avoid issues of caching, thread safety, etc.  Sure seems cheap.

[tomhudson, 2014/07/02 15:25:41]

Done.

+
 private:
     explicit SkPlayback(const SkRecord*);
 
     SkAutoTDelete<const SkRecord> fRecord;
+    bool fWillPlaybackBitmaps;
 
     friend class SkRecording;
 };
 
 class SK_API SkRecording : SkNoncopyable {
 public:
     SkRecording(int width, int height);
     ~SkRecording();
 
     // Draws issued to this canvas will be replayed by SkPlayback::draw().
     // Any refs held on canvas() must be dropped before you may call releasePlayback().
     SkCanvas* canvas();
 
     // Release exclusive ownership of an SkPlayback to the caller.
     // Any refs held on canvas() must be dropped before you may call releasePlayback().
     SkPlayback* releasePlayback();
 
 private:
     SkAutoTDelete<SkRecord> fRecord;
     SkAutoTUnref<SkRecorder> fRecorder;
 };
 
 }  // namespace EXPERIMENTAL
 
 #endif//SkRecording_DEFINED