projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 2bcd7b3a RC |
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 |