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Annotation of 43BSDTahoe/ucb/talk/init_disp.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1983 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that the above copyright notice and this paragraph are
                      7:  * duplicated in all such forms and that any documentation,
                      8:  * advertising materials, and other materials related to such
                      9:  * distribution and use acknowledge that the software was developed
                     10:  * by the University of California, Berkeley.  The name of the
                     11:  * University may not be used to endorse or promote products derived
                     12:  * from this software without specific prior written permission.
                     13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     16:  */
                     17: 
                     18: #ifndef lint
                     19: static char sccsid[] = "@(#)init_disp.c        5.3 (Berkeley) 6/29/88";
                     20: #endif /* not lint */
                     21: 
                     22: /*
                     23:  * Initialization code for the display package,
                     24:  * as well as the signal handling routines.
                     25:  */
                     26: 
                     27: #include "talk.h"
                     28: #include <signal.h>
                     29: 
                     30: /* 
                     31:  * Set up curses, catch the appropriate signals,
                     32:  * and build the various windows.
                     33:  */
                     34: init_display()
                     35: {
                     36:        void sig_sent();
                     37:        struct sigvec sigv;
                     38: 
                     39:        initscr();
                     40:        (void) sigvec(SIGTSTP, (struct sigvec *)0, &sigv);
                     41:        sigv.sv_mask |= sigmask(SIGALRM);
                     42:        (void) sigvec(SIGTSTP, &sigv, (struct sigvec *)0);
                     43:        curses_initialized = 1;
                     44:        clear();
                     45:        refresh();
                     46:        noecho();
                     47:        crmode();
                     48:        signal(SIGINT, sig_sent);
                     49:        signal(SIGPIPE, sig_sent);
                     50:        /* curses takes care of ^Z */
                     51:        my_win.x_nlines = LINES / 2;
                     52:        my_win.x_ncols = COLS;
                     53:        my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0);
                     54:        scrollok(my_win.x_win, FALSE);
                     55:        wclear(my_win.x_win);
                     56: 
                     57:        his_win.x_nlines = LINES / 2 - 1;
                     58:        his_win.x_ncols = COLS;
                     59:        his_win.x_win = newwin(his_win.x_nlines, his_win.x_ncols,
                     60:            my_win.x_nlines+1, 0);
                     61:        scrollok(his_win.x_win, FALSE);
                     62:        wclear(his_win.x_win);
                     63: 
                     64:        line_win = newwin(1, COLS, my_win.x_nlines, 0);
                     65:        box(line_win, '-', '-');
                     66:        wrefresh(line_win);
                     67:        /* let them know we are working on it */
                     68:        current_state = "No connection yet";
                     69: }
                     70: 
                     71: /*
                     72:  * Trade edit characters with the other talk. By agreement
                     73:  * the first three characters each talk transmits after
                     74:  * connection are the three edit characters.
                     75:  */
                     76: set_edit_chars()
                     77: {
                     78:        char buf[3];
                     79:        int cc;
                     80:        struct sgttyb tty;
                     81:        struct ltchars ltc;
                     82:        
                     83:        ioctl(0, TIOCGETP, &tty);
                     84:        ioctl(0, TIOCGLTC, (struct sgttyb *)&ltc);
                     85:        my_win.cerase = tty.sg_erase;
                     86:        my_win.kill = tty.sg_kill;
                     87:        if (ltc.t_werasc == (char) -1)
                     88:                my_win.werase = '\027';  /* control W */
                     89:        else
                     90:                my_win.werase = ltc.t_werasc;
                     91:        buf[0] = my_win.cerase;
                     92:        buf[1] = my_win.kill;
                     93:        buf[2] = my_win.werase;
                     94:        cc = write(sockt, buf, sizeof(buf));
                     95:        if (cc != sizeof(buf) )
                     96:                p_error("Lost the connection");
                     97:        cc = read(sockt, buf, sizeof(buf));
                     98:        if (cc != sizeof(buf) )
                     99:                p_error("Lost the connection");
                    100:        his_win.cerase = buf[0];
                    101:        his_win.kill = buf[1];
                    102:        his_win.werase = buf[2];
                    103: }
                    104: 
                    105: void
                    106: sig_sent()
                    107: {
                    108: 
                    109:        message("Connection closing. Exiting");
                    110:        quit();
                    111: }
                    112: 
                    113: /*
                    114:  * All done talking...hang up the phone and reset terminal thingy's
                    115:  */
                    116: quit()
                    117: {
                    118: 
                    119:        if (curses_initialized) {
                    120:                wmove(his_win.x_win, his_win.x_nlines-1, 0);
                    121:                wclrtoeol(his_win.x_win);
                    122:                wrefresh(his_win.x_win);
                    123:                endwin();
                    124:        }
                    125:        if (invitation_waiting)
                    126:                send_delete();
                    127:        exit(0);
                    128: }

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