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      1 
      2 /*
      3  * Copyright 2011 Google Inc.
      4  *
      5  * Use of this source code is governed by a BSD-style license that can be
      6  * found in the LICENSE file.
      7  */
      8 #ifndef SkPathHeap_DEFINED
      9 #define SkPathHeap_DEFINED
     10 
     11 #include "SkRefCnt.h"
     12 #include "SkChunkAlloc.h"
     13 #include "SkTDArray.h"
     14 
     15 class SkPath;
     16 class SkFlattenableReadBuffer;
     17 class SkFlattenableWriteBuffer;
     18 
     19 class SkPathHeap : public SkRefCnt {
     20 public:
     21     SK_DECLARE_INST_COUNT(SkPathHeap)
     22 
     23     SkPathHeap();
     24     SkPathHeap(SkFlattenableReadBuffer&);
     25     virtual ~SkPathHeap();
     26 
     27     /** Copy the path into the heap, and return the new total number of paths.
     28         Thus, the returned value will be index+1, where index is the index of
     29         this newly added (copied) path.
     30      */
     31     int append(const SkPath&);
     32 
     33     // called during picture-playback
     34     int count() const { return fPaths.count(); }
     35     const SkPath& operator[](int index) const {
     36         return *fPaths[index];
     37     }
     38 
     39     void flatten(SkFlattenableWriteBuffer&) const;
     40 
     41 private:
     42     // we store the paths in the heap (placement new)
     43     SkChunkAlloc        fHeap;
     44     // we just store ptrs into fHeap here
     45     SkTDArray<SkPath*>  fPaths;
     46 
     47     typedef SkRefCnt INHERITED;
     48 };
     49 
     50 #endif
     51