canvasiterator.h

来自「C++&datastructure书籍源码,以前外教提供现在与大家共享」· C头文件 代码 · 共 27 行

#ifndef _CANVASITERATOR_H
#define _CANVASITERATOR_H

#include "iterator.h"

class CanvasIterator : public IteratorRef<Shape>
{
  public:
    CanvasIterator(tvector<Shape *>& a, int len)
      : myElts(a),
        myIndex(0),
        myLength(len)
    { }
    
    virtual void Init() { myIndex = 0; }
    virtual bool HasMore() { return myIndex < myLength; }
    virtual void Next() { myIndex++;}
    
    virtual Shape& Current() { return * myElts[myIndex]; }
  private:
    tvector<Shape *>& myElts;
    int               myIndex;
    int               myLength;
};

#endif