freebsd-dev/gnu/lib/libdialog/msgbox.c

/*
 *  msgbox.c -- implements the message box and info box
 *
 *  AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version 2
 *  of the License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */


#include <dialog.h>
#include "dialog.priv.h"


/*
 * Display a message box. Program will pause and display an "OK" button
 * if the parameter 'pause' is non-zero.
 */
int dialog_msgbox(unsigned char *title, unsigned char *prompt, int height, int width, int pause)
{
  int i, j, x, y, key = 0;
  WINDOW *dialog;

  if (height < 0)
	height = strheight(prompt)+2+2*(!!pause);
  if (width < 0) {
	i = strwidth(prompt);
	j = strwidth(title);
	width = MAX(i,j)+4;
  }

  /* center dialog box on screen */
  x = (COLS - width)/2;
  y = (LINES - height)/2;

#ifdef HAVE_NCURSES
  if (use_shadow)
    draw_shadow(stdscr, y, x, height, width);
#endif
  dialog = newwin(height, width, y, x);
  if (dialog == NULL) {
    endwin();
    fprintf(stderr, "\nnewwin(%d,%d,%d,%d) failed, maybe wrong dims\n", height,width,y,x);
    exit(1);
  }
  keypad(dialog, TRUE);

  draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);

  if (title != NULL) {
    wattrset(dialog, title_attr);
    wmove(dialog, 0, (width - strlen(title))/2 - 1);
    waddch(dialog, ' ');
    waddstr(dialog, title);
    waddch(dialog, ' ');
  }
  wattrset(dialog, dialog_attr);
  wmove(dialog, 1, 2);
  print_autowrap(dialog, prompt, height-1, width-2, width, 1, 2, TRUE, FALSE);

  if (pause) {
    wattrset(dialog, border_attr);
    wmove(dialog, height-3, 0);
    waddch(dialog, ACS_LTEE);
    for (i = 0; i < width-2; i++)
      waddch(dialog, ACS_HLINE);
    wattrset(dialog, dialog_attr);
    waddch(dialog, ACS_RTEE);
    wmove(dialog, height-2, 1);
    for (i = 0; i < width-2; i++)
    waddch(dialog, ' ');
    print_button(dialog, "  OK  ", height-2, width/2-4, TRUE);
    wrefresh(dialog);
    while (key != ESC && key != '\n' && key != ' ' && key != '\r')
      key = wgetch(dialog);
    if (key == '\r')
      key = '\n';
  }
  else {
    key = '\n';
    wrefresh(dialog);
  }

  delwin(dialog);
  return (key == ESC ? -1 : 0);
}
/* End of dialog_msgbox() */