SkTextBlob plumbing

include/core/SkTextBlob.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 SkTextBlob_DEFINED
 #define SkTextBlob_DEFINED
 
 #include "SkPaint.h"
 #include "SkRefCnt.h"
 #include "SkTArray.h"
 #include "SkTDArray.h"
 
+class SkReadBuffer;
+class SkWriteBuffer;
+
 /** \class SkTextBlob
 
     SkTextBlob combines multiple text runs into an immutable, ref-counted structure.
 */
 class SkTextBlob : public SkRefCnt {
 public:
     /**
      *  Returns the blob bounding box.
      */
     const SkRect& bounds() const { return fBounds; }
@@ skipping 34 matching lines @@
         uint32_t         count;
         uint32_t         glyphStart; // index into fGlyphBuffer
         uint32_t         posStart;   // index into fPosBuffer
         SkPoint          offset;     // run offset (unsued for fully positioned glyphs)
         SkPaint          font;
         GlyphPositioning positioning;
     };
 
     SkTextBlob(uint16_t* glyphs, SkScalar* pos, const SkTArray<Run>* runs, const SkRect& bounds);
 
+    void flatten(SkWriteBuffer&) const;
+    static const SkTextBlob* CreateFromBuffer(SkReadBuffer&);
+
+    static unsigned ScalarsPerGlyph(GlyphPositioning pos);
+
     friend class SkCanvas;
+    friend class SkPictureData;
     friend class SkTextBlobBuilder;
     friend class TextBlobTester;
 
     const SkAutoTMalloc<uint16_t>       fGlyphBuffer;
     const SkAutoTMalloc<SkScalar>       fPosBuffer;
 
     // SkTArray required here for run font destruction.
     SkAutoTDelete<const SkTArray<Run> > fRuns;
     const SkRect                        fBounds;
 
@@ skipping 90 matching lines @@
     SkTDArray<SkScalar>        fPosBuffer;
     SkTArray<SkTextBlob::Run>* fRuns;
 
     SkRect                     fBounds;
     bool                       fDeferredBounds;
 
     RunBuffer                  fCurrentRunBuffer;
 };
 
 #endif // SkTextBlob_DEFINED