#pragma once
/// \file scrollback.h

class screen;
class font;

class scrollback
{
public:
	scrollback(unsigned lines, unsigned cols, unsigned margin = 2);

	void add_line(const char *line, size_t len);

	char * get_line(unsigned i);

	void render(screen &scr, font &fnt);

private:
	char *m_data;
	unsigned m_rows, m_cols;
	unsigned m_start;
	unsigned m_count;
	unsigned m_margin;
};