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Annotation of 42BSD/usr.lib/lib2648/2648.h, revision 1.1.1.1

1.1       root        1: /*     2648.h  4.1     83/03/09        */
                      2: /*
                      3:  * lib2648: routines to deal directly with the HP 2648 Graphics terminal.
                      4:  */
                      5: 
                      6: #include <stdio.h>
                      7: 
                      8: #define ESC    '\033'  /* Escape */
                      9: 
                     10: /* Normal/inverse video */
                     11: #define NORMAL 0       /* not inverse video */
                     12: #define INVERSE        1       /* inverse video */
                     13: 
                     14: /* Kinds of lines we can draw */
                     15: #define MX     10      /* exclusive or what's on screen */
                     16: #define MC     11      /* clear what's on screen */
                     17: #define MS     12      /* set what's on screen */
                     18: 
                     19: /* Escape sequence modes the terminal might be in */
                     20: #define NONE   20      /* not in an escape sequence */
                     21: #define ESCD   21      /* in an escape * d sequence */
                     22: #define ESCP   22      /* in an escape * p sequence */
                     23: #define ESCM   23      /* in an escape * m sequence */
                     24: #define TEXT   24      /* in graphics text mode */
                     25: 
                     26: /*
                     27:  * Constants for 2648 ^E/^F handshaking.
                     28:  */
                     29: #define ENQ    5       /* ^E sent by system to terminal */
                     30: #define ACK    6       /* ^F reply by terminal to system */
                     31: #define TBLKSIZ        32      /* Max # chars between handshakes */
                     32: 
                     33: /*
                     34:  * Misc. variables used by lib2648.
                     35:  */
                     36: int    _on2648;        /* true if getenv("TERM") is hp2648 */
                     37: int    _video;         /* are we in inverse video mode? */
                     38: int    _actsmode;      /* line type mode screen actually in */
                     39: int    _supsmode;      /* line type mode screen supposed to be in */
                     40: int    _escmode;       /* flavor of escape sequence currently in */
                     41: int    _cursoron;      /* true if cursor is on */
                     42: 
                     43: int    _outcount;      /* # of consecutive chars without read sent */
                     44: char   _pushback[BUFSIZ]; /* queue of chars pushed back onto the input */
                     45: char   *_pb_front, *_pb_back;
                     46: 
                     47: int    _penx, _peny;   /* where pen is really at */
                     48: int    _curx, _cury;   /* where cursor is really at */
                     49: int    _supx, _supy;   /* where pen and cursor are supposed to be */
                     50: 
                     51: #ifdef TRACE
                     52: FILE   *trace;         /* trace file for debugging */
                     53: #endif

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