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 |