usr/src/lib/libplot/hp2648/open.c

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#ifndef lint
static char sccsid[] = "@(#)open.c      5.1 (Berkeley) %G%";
#endif not lint

#include <sgtty.h>
#include "hp2648.h"

int shakehands;
int currentx;
int currenty;
int buffcount;
int fildes;
float lowx;
float lowy;
float scalex;
float scaley;
struct sgttyb sarg;

openpl()
{
        if ( isatty(fileno( stdout )) ) {
                shakehands = TRUE;
                fildes = open(TERMINAL, 0);
                gtty(fildes, &sarg);
                sarg.sg_flags = sarg.sg_flags | RAW;
                stty(fildes, &sarg);
                sarg.sg_flags = sarg.sg_flags & ~RAW;
        }
        else {
                shakehands = FALSE;
        }
        buffcount = 0;
        currentx = 0;
        currenty = 0;
        buffready(8);
        putchar(ESC);
        putchar(GRAPHIC);
        putchar(DISPLAY);
        putchar('c');
        putchar(ESC);
        putchar(GRAPHIC);
        putchar(PLOT);
        putchar(BINARY);
        space(0,0,720,360);
}