usr/src/old/lib2648/2648.h

/*      2648.h  4.1     83/03/09        */
/*
 * lib2648: routines to deal directly with the HP 2648 Graphics terminal.
 */

#include <stdio.h>

#define ESC     '\033'  /* Escape */

/* Normal/inverse video */
#define NORMAL  0       /* not inverse video */
#define INVERSE 1       /* inverse video */

/* Kinds of lines we can draw */
#define MX      10      /* exclusive or what's on screen */
#define MC      11      /* clear what's on screen */
#define MS      12      /* set what's on screen */

/* Escape sequence modes the terminal might be in */
#define NONE    20      /* not in an escape sequence */
#define ESCD    21      /* in an escape * d sequence */
#define ESCP    22      /* in an escape * p sequence */
#define ESCM    23      /* in an escape * m sequence */
#define TEXT    24      /* in graphics text mode */

/*
 * Constants for 2648 ^E/^F handshaking.
 */
#define ENQ     5       /* ^E sent by system to terminal */
#define ACK     6       /* ^F reply by terminal to system */
#define TBLKSIZ 32      /* Max # chars between handshakes */

/*
 * Misc. variables used by lib2648.
 */
int     _on2648;        /* true if getenv("TERM") is hp2648 */
int     _video;         /* are we in inverse video mode? */
int     _actsmode;      /* line type mode screen actually in */
int     _supsmode;      /* line type mode screen supposed to be in */
int     _escmode;       /* flavor of escape sequence currently in */
int     _cursoron;      /* true if cursor is on */

int     _outcount;      /* # of consecutive chars without read sent */
char    _pushback[BUFSIZ]; /* queue of chars pushed back onto the input */
char    *_pb_front, *_pb_back;

int     _penx, _peny;   /* where pen is really at */
int     _curx, _cury;   /* where cursor is really at */
int     _supx, _supy;   /* where pen and cursor are supposed to be */

#ifdef TRACE
FILE    *trace;         /* trace file for debugging */
#endif