#ifndef NEWPICTURE_H
#define NEWPICTURE_H
#include<iostream>
using namespace std;
class P_Node
{
friend class Picture;
protected:
P_Node();
virtual ~P_Node(){};
virtual int width()const=0;
virtual int height()const=0;
virtual void display(ostream &, int, int)const=0;
int max(int x, int y)const { return x > y ? x : y; }
void pad(ostream & os, int x, int y)const ;
private:
int use;
};
class Picture
{
friend class String_Pic;
friend class Frame_Pic;
friend class Hcat_Pic;
friend class Vcat_Pic;
public:
Picture();
Picture(const char * const *, int);
Picture(const Picture &);
~Picture();
Picture & operator =(const Picture &);
P_Node * p;
Picture(P_Node * m);
int height()const;
int width()const;
void display(ostream &, int, int)const;
friend ostream & operator <<(ostream & os, const Picture & p);
friend Picture frame(const Picture & p);
friend Picture operator & (const Picture & p, const Picture & q);
friend Picture operator | (const Picture & p, const Picture & q);
};
class String_Pic :public P_Node
{
friend class Picture;
String_Pic(const char* const * arr, int n);
~String_Pic();
char** data;
int size;
int height()const;
int width()const;
void display(ostream &, int, int)const;
};
class Frame_Pic :public P_Node
{
friend Picture frame(const Picture &);
int height()const;
int width()const;
void display(ostream &, int, int)const;
Frame_Pic(const Picture &);
Picture p;
};
class Vcat_Pic :public P_Node
{
friend Picture operator &
(const Picture & n, const Picture & m);
Vcat_Pic(const Picture & n, const Picture & m);
int height()const;
int width()const;
void display(ostream &, int, int)const;
Picture top, bottom;
};
class Hcat_Pic :public P_Node
{
friend Picture operator |
(const Picture & n, const Picture & m);
Hcat_Pic(const Picture & n, const Picture & m);
int height()const;
int width()const;
void display(ostream &, int, int)const;
Picture left,right;
};
Picture::Picture(const Picture & m) :p(m.p)
{
m.p->use++;
}
Picture::Picture(P_Node * m) : p(m){}
Picture::~Picture()
{
if (--p->use == 0)
delete p;
}
Picture& Picture::operator=(const Picture & q)
{
q.p->use++;
if (--p->use == 0)
delete p;
p = q.p;
return *this;
}
int Picture::height()const{ return p->height(); }
int Picture::width()const { return p->width(); }
void Picture::display(ostream & os, int n, int m)const
{
p->display(os, n, m);
}
Picture::Picture(const char* const * arr, int n) :p(new String_Pic(arr, n)){}
P_Node::P_Node() :use(1){}
String_Pic::String_Pic(const char * const * arr, int n)
: data(new char*[n]), size(n)
{
for (int i = 0; i < n; ++i)
{
data[i] = new char[strlen(arr[i]) + 1];
strcpy_s(data[i],strlen(arr[i])+1,arr[i]);
}
}
String_Pic::~String_Pic()
{
for (int i = 0; i < size; ++i)
delete[]data[i];
delete[]data;
}
int String_Pic::height()const{ return size; }
int String_Pic::width()const
{
int n = 0;
for (int i = 0; i < size; ++i)
n = max(n, strlen(data[i]));
return n;
}
void String_Pic::display(ostream & os, int row, int width)const
{
int start = 0;
if (row >= 0 && row < height())
{
os << data[row];
start = strlen(data[row]);
}
pad(os, start, width);
}
int Frame_Pic::height()const{ return p.height() + 2; }
int Frame_Pic::width()const{ return p.width() + 2; }
void Frame_Pic::display(ostream& os, int row, int wd)const
{
if (row < 0 || row >= height())
{
pad(os, 0, wd);
}
else
{
if ( 0 == row || row == height() - 1)
{
os << "+";
int i = p.width();
while (--i >= 0)os << "-";
os << "+";
}
else
{
os << "|";
p.display(os, row - 1, p.width());
os << "|";
}
pad(os, width(), wd);
}
}
Frame_Pic::Frame_Pic(const Picture & m) :p(m){}
Picture frame(const Picture & m)
{
return new Frame_Pic(m);
}
Vcat_Pic::Vcat_Pic(const Picture & t, const Picture & b) : top(t), bottom(b){}
Hcat_Pic::Hcat_Pic(const Picture & l, const Picture & r) : left(l),right(r){}
Picture operator &(const Picture & n, const Picture & m)
{
return new Vcat_Pic(n, m);
}
Picture operator |(const Picture & n, const Picture & m)
{
return new Hcat_Pic(n, m);
}
int Vcat_Pic::height()const{ return top.height() + bottom.height(); }
int Vcat_Pic::width()const{ return max(top.width(), bottom.width()); }
int Hcat_Pic::height()const{ return max(left.height(), right.height()); }
int Hcat_Pic::width()const{ return left.width()+ right.width(); }
void Vcat_Pic::display(ostream& os, int row, int wd)const
{
if (row >= 0 && row < top.height())
top.display(os, row, wd);
else
{
if (row < top.height() + bottom.height())
bottom.display(os, row - top.height(), wd);
else
pad(os, 0, wd);
}
}
void Hcat_Pic::display(ostream & os, int row, int wd)const
{
left.display(os, row, left.width());
right.display(os, row, right.width());
pad(os, width(), wd);
}
void P_Node::pad(ostream & os, int x, int y)const
{
for (int i = x; i < y; ++i)
os << " ";
}
ostream & operator <<(ostream & os, const Picture & p)
{
int ht = p.height();
for (int i = 0; i < ht; ++i)
{ p.display(os, i, 0); os << endl;}
return os;
}
#endif#include"NewPicture.h"
#include<iostream>
using namespace std;
int main()
{
char * init[] = { "Summer", "love", "Xieweizhong" };
Picture p(init, 3);
cout << p << endl;
cout << frame((p | frame(p)) | (p | frame(p))) << endl;
cout << frame((p & frame(p)) | (p | frame(p))) << endl;
cout << frame((p | frame(p)) | (p & frame(p))) << endl;
cout << frame((p & frame(p)) | (p & frame(p))) << endl;
cout << frame((p | frame(p)) & (p | frame(p))) << endl;
cout << frame((p & frame(p)) & (p | frame(p))) << endl;
cout << frame((p | frame(p)) & (p & frame(p))) << endl;
cout << frame((p & frame(p)) & (p & frame(p))) << endl;
return 0;
}原文地址：http://blog.csdn.net/shiwazone/article/details/45229617
