4.3BSD - /usr/src/ucb/talk/init_disp.c

   1: /*
   2:  * Copyright (c) 1983 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  */
   6: 
   7: #ifndef lint
   8: static char sccsid[] = "@(#)init_disp.c	5.1 (Berkeley) 6/6/85";
   9: #endif not lint
  10: 
  11: /*
  12:  * Initialization code for the display package,
  13:  * as well as the signal handling routines.
  14:  */
  15: 
  16: #include "talk.h"
  17: #include <signal.h>
  18: 
  19: /*
  20:  * Set up curses, catch the appropriate signals,
  21:  * and build the various windows.
  22:  */
  23: init_display()
  24: {
  25:     void sig_sent();
  26:     struct sigvec sigv;
  27: 
  28:     initscr();
  29:     (void) sigvec(SIGTSTP, (struct sigvec *)0, &sigv);
  30:     sigv.sv_mask |= sigmask(SIGALRM);
  31:     (void) sigvec(SIGTSTP, &sigv, (struct sigvec *)0);
  32:     curses_initialized = 1;
  33:     clear();
  34:     refresh();
  35:     noecho();
  36:     crmode();
  37:     signal(SIGINT, sig_sent);
  38:     signal(SIGPIPE, sig_sent);
  39:     /* curses takes care of ^Z */
  40:     my_win.x_nlines = LINES / 2;
  41:     my_win.x_ncols = COLS;
  42:     my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0);
  43:     scrollok(my_win.x_win, FALSE);
  44:     wclear(my_win.x_win);
  45: 
  46:     his_win.x_nlines = LINES / 2 - 1;
  47:     his_win.x_ncols = COLS;
  48:     his_win.x_win = newwin(his_win.x_nlines, his_win.x_ncols,
  49:         my_win.x_nlines+1, 0);
  50:     scrollok(his_win.x_win, FALSE);
  51:     wclear(his_win.x_win);
  52: 
  53:     line_win = newwin(1, COLS, my_win.x_nlines, 0);
  54:     box(line_win, '-', '-');
  55:     wrefresh(line_win);
  56:     /* let them know we are working on it */
  57:     current_state = "No connection yet";
  58: }
  59: 
  60: /*
  61:  * Trade edit characters with the other talk. By agreement
  62:  * the first three characters each talk transmits after
  63:  * connection are the three edit characters.
  64:  */
  65: set_edit_chars()
  66: {
  67:     char buf[3];
  68:     int cc;
  69:     struct sgttyb tty;
  70:     struct ltchars ltc;
  71: 
  72:     ioctl(0, TIOCGETP, &tty);
  73:     ioctl(0, TIOCGLTC, (struct sgttyb *)&ltc);
  74:     my_win.cerase = tty.sg_erase;
  75:     my_win.kill = tty.sg_kill;
  76:     if (ltc.t_werasc == (char) -1)
  77:         my_win.werase = '\027';  /* control W */
  78:     else
  79:         my_win.werase = ltc.t_werasc;
  80:     buf[0] = my_win.cerase;
  81:     buf[1] = my_win.kill;
  82:     buf[2] = my_win.werase;
  83:     cc = write(sockt, buf, sizeof(buf));
  84:     if (cc != sizeof(buf) )
  85:         p_error("Lost the connection");
  86:     cc = read(sockt, buf, sizeof(buf));
  87:     if (cc != sizeof(buf) )
  88:         p_error("Lost the connection");
  89:     his_win.cerase = buf[0];
  90:     his_win.kill = buf[1];
  91:     his_win.werase = buf[2];
  92: }
  93: 
  94: void
  95: sig_sent()
  96: {
  97: 
  98:     message("Connection closing. Exiting");
  99:     quit();
 100: }
 101: 
 102: /*
 103:  * All done talking...hang up the phone and reset terminal thingy's
 104:  */
 105: quit()
 106: {
 107: 
 108:     if (curses_initialized) {
 109:         wmove(his_win.x_win, his_win.x_nlines-1, 0);
 110:         wclrtoeol(his_win.x_win);
 111:         wrefresh(his_win.x_win);
 112:         endwin();
 113:     }
 114:     if (invitation_waiting)
 115:         send_delete();
 116:     exit(0);
 117: }

Defined functions

Defined variables