key.h

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#ifndef _KEY_H
#define _KEY_H

#include <iostream>
#include <string>
using namespace std;

// encapsulate a key-press for use in the graphics package
// the header file is independent of the graphics package, but
// the implementation relies on the CMU graphics package
// created by Geoff Washburn and others, [e-mail]
//
// All Key methods are const, they should be self-explanatory
// by name in returning a bool giving characteristics of the key,
// or an int in the case of funkey() for the function keys
// and accessor functions for the general kinds, see the class enum
// for details

class Key
{
  public:
    enum Kind{ascii, escape, function, arrow, none};
    
    Key();
    Key(char ch);
    Key(char ch, Kind k);
    
    bool isnothing()  const;
    bool isasc()    const;
    bool isfunction() const;
    bool isarrow()    const;
    bool isescape()   const;
    bool iscontrol()  const;
    char aschar()    const;
    
    bool isleftarrow()    const;
    bool isrightarrow()   const;
    bool isuparrow()      const;
    bool isdownarrow()    const;
    bool ishome()         const;
    bool isend()          const;
    bool ispageup()       const;
    bool ispagedown()     const;
    bool iscenter()       const;
    
    int  funkey()         const;
    Kind getKind()        const;
    string tostring()     const;
    
  private:

    char myChar;
    Kind myKind;
};

ostream& operator << (ostream& output, const Key& k);
bool operator == (const Key& lhs, const Key& rhs);
bool operator != (const Key& lhs, const Key& rhs);

#endif