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