#ifndef CANVASH
#define CANVASH
#include <iostream>
using namespace std;

#include "point.h"
#include "line.h"

class canvas {
	unsigned width, height;	//in puxels
public:
	canvas(unsigned width = 300, unsigned height = 150);
	~canvas();

	friend canvas& operator<<(canvas& c, const line& l);

	friend canvas& operator<<(canvas& c, canvas& (*p)(canvas &)) {
		return p(c);
	}
};

//i/o manipulators
canvas& black(canvas& c);
canvas&   red(canvas& c);
#endif