usr/src/lib/libcurses/deleteln.c

/*
 * Copyright (c) 1981 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
static char sccsid[] = "@(#)deleteln.c  5.3 (Berkeley) %G%";
#endif /* not lint */

# include       "curses.ext"

/*
 *      This routine deletes a line from the screen.  It leaves
 * (_cury,_curx) unchanged.
 *
 */
wdeleteln(win)
reg WINDOW      *win;
{
        reg char        *temp;
        reg int         y;
        reg char        *end;
        reg int         x;

# ifdef DEBUG
        fprintf(outf, "DELETELN(%0.2o)\n", win);
# endif
        temp = win->_y[win->_cury];
        for (y = win->_cury; y < win->_maxy - 1; y++) {
                if (win->_orig == NULL)
                        win->_y[y] = win->_y[y + 1];
                else
                        bcopy(win->_y[y + 1], win->_y[y], win->_maxx);
                touchline(win, y, 0, win->_maxx - 1);
        }
        if (win->_orig == NULL)
                win->_y[y] = temp;
        else
                temp = win->_y[y];
        for (end = &temp[win->_maxx]; temp < end; )
                *temp++ = ' ';
        touchline(win, win->_cury, 0, win->_maxx - 1);
        if (win->_orig == NULL)
                _id_subwins(win);
        return OK;
}