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Annotation of 43BSDReno/usr.bin/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: (1) source distributions retain this entire copyright
                      7:  * notice and comment, and (2) distributions including binaries display
                      8:  * the following acknowledgement:  ``This product includes software
                      9:  * developed by the University of California, Berkeley and its contributors''
                     10:  * in the documentation or other materials provided with the distribution
                     11:  * and in all advertising materials mentioning features or use of this
                     12:  * software. Neither the name of the University nor the names of its
                     13:  * contributors may be used to endorse or promote products derived
                     14:  * from this software without specific prior written permission.
                     15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     18:  */
                     19: 
                     20: #ifndef lint
                     21: static char sccsid[] = "@(#)init_disp.c        5.4 (Berkeley) 6/1/90";
                     22: #endif /* not lint */
                     23: 
                     24: /*
                     25:  * Initialization code for the display package,
                     26:  * as well as the signal handling routines.
                     27:  */
                     28: 
                     29: #include "talk.h"
                     30: #include <signal.h>
                     31: 
                     32: /* 
                     33:  * Set up curses, catch the appropriate signals,
                     34:  * and build the various windows.
                     35:  */
                     36: init_display()
                     37: {
                     38:        void sig_sent();
                     39:        struct sigvec sigv;
                     40: 
                     41:        initscr();
                     42:        (void) sigvec(SIGTSTP, (struct sigvec *)0, &sigv);
                     43:        sigv.sv_mask |= sigmask(SIGALRM);
                     44:        (void) sigvec(SIGTSTP, &sigv, (struct sigvec *)0);
                     45:        curses_initialized = 1;
                     46:        clear();
                     47:        refresh();
                     48:        noecho();
                     49:        crmode();
                     50:        signal(SIGINT, sig_sent);
                     51:        signal(SIGPIPE, sig_sent);
                     52:        /* curses takes care of ^Z */
                     53:        my_win.x_nlines = LINES / 2;
                     54:        my_win.x_ncols = COLS;
                     55:        my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0);
                     56:        scrollok(my_win.x_win, FALSE);
                     57:        wclear(my_win.x_win);
                     58: 
                     59:        his_win.x_nlines = LINES / 2 - 1;
                     60:        his_win.x_ncols = COLS;
                     61:        his_win.x_win = newwin(his_win.x_nlines, his_win.x_ncols,
                     62:            my_win.x_nlines+1, 0);
                     63:        scrollok(his_win.x_win, FALSE);
                     64:        wclear(his_win.x_win);
                     65: 
                     66:        line_win = newwin(1, COLS, my_win.x_nlines, 0);
                     67:        box(line_win, '-', '-');
                     68:        wrefresh(line_win);
                     69:        /* let them know we are working on it */
                     70:        current_state = "No connection yet";
                     71: }
                     72: 
                     73: /*
                     74:  * Trade edit characters with the other talk. By agreement
                     75:  * the first three characters each talk transmits after
                     76:  * connection are the three edit characters.
                     77:  */
                     78: set_edit_chars()
                     79: {
                     80:        char buf[3];
                     81:        int cc;
                     82:        struct sgttyb tty;
                     83:        struct ltchars ltc;
                     84:        
                     85:        ioctl(0, TIOCGETP, &tty);
                     86:        ioctl(0, TIOCGLTC, (struct sgttyb *)&ltc);
                     87:        my_win.cerase = tty.sg_erase;
                     88:        my_win.kill = tty.sg_kill;
                     89:        if (ltc.t_werasc == (char) -1)
                     90:                my_win.werase = '\027';  /* control W */
                     91:        else
                     92:                my_win.werase = ltc.t_werasc;
                     93:        buf[0] = my_win.cerase;
                     94:        buf[1] = my_win.kill;
                     95:        buf[2] = my_win.werase;
                     96:        cc = write(sockt, buf, sizeof(buf));
                     97:        if (cc != sizeof(buf) )
                     98:                p_error("Lost the connection");
                     99:        cc = read(sockt, buf, sizeof(buf));
                    100:        if (cc != sizeof(buf) )
                    101:                p_error("Lost the connection");
                    102:        his_win.cerase = buf[0];
                    103:        his_win.kill = buf[1];
                    104:        his_win.werase = buf[2];
                    105: }
                    106: 
                    107: void
                    108: sig_sent()
                    109: {
                    110: 
                    111:        message("Connection closing. Exiting");
                    112:        quit();
                    113: }
                    114: 
                    115: /*
                    116:  * All done talking...hang up the phone and reset terminal thingy's
                    117:  */
                    118: quit()
                    119: {
                    120: 
                    121:        if (curses_initialized) {
                    122:                wmove(his_win.x_win, his_win.x_nlines-1, 0);
                    123:                wclrtoeol(his_win.x_win);
                    124:                wrefresh(his_win.x_win);
                    125:                endwin();
                    126:        }
                    127:        if (invitation_waiting)
                    128:                send_delete();
                    129:        exit(0);
                    130: }

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