usr/src/lib/libcurses/id_subwins.c

/*
 * Copyright (c) 1981 Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 */

#ifndef lint
static char sccsid[] = "@(#)id_subwins.c        5.7 (Berkeley) %G%";
#endif  /* not lint */

#include <curses.h>

/*
 * __id_subwins --
 *      Re-sync the pointers to lines for all the subwindows.
 */
void
__id_subwins(orig)
        register WINDOW *orig;
{
        register WINDOW *win;
        register int oy, realy, y;

        realy = orig->begy + orig->cury;
        for (win = orig->nextp; win != orig; win = win->nextp) {
                /*
                 * If the window ends before our current position, don't need
                 * to do anything.
                 */
                if (win->begy + win->maxy <= realy)
                        continue;

                oy = orig->cury;
                for (y = realy - win->begy; y < win->maxy; y++, oy++)
                        win->lines[y]->line =
                                &orig->lines[oy]->line[win->ch_off];
        }
}