int
mvwin(WINDOW *win, int by, int bx)
{
WINDOW *orig;
int dy, dx;
if (by + win->_maxy > LINES || bx + win->_maxx > COLS)
return (ERR);
dy = by - win->_begy;
dx = bx - win->_begx;
orig = win->_orig;
if (orig == NULL) {
orig = win;
do {
win->_begy += dy;
win->_begx += dx;
_swflags_(win);
win = win->_nextp;
} while (win != orig);
} else {
if (by < orig->_begy || win->_maxy + dy > orig->_maxy)
return (ERR);
if (bx < orig->_begx || win->_maxx + dx > orig->_maxx)
return (ERR);
win->_begy = (short)by;
win->_begx = (short)bx;
_swflags_(win);
_set_subwin_(orig, win);
}
(void) touchwin(win);
return (OK);
}
WINDOW *
subwin(WINDOW *orig, int num_lines, int num_cols, int begy, int begx)
{
WINDOW *win;
int by, bx, nl, nc;
by = begy;
bx = begx;
nl = num_lines;
nc = num_cols;
/*
* make sure window fits inside the original one
*/
#ifdef DEBUG
fprintf(outf, "SUBWIN(%0.2o, %d, %d, %d, %d)\n", orig, nl, nc, by, bx);
#endif
if (by < orig->_begy || bx < orig->_begx ||
by + nl > orig->_maxy + orig->_begy ||
bx + nc > orig->_maxx + orig->_begx)
return (ERR);
if (nl == 0)
nl = orig->_maxy + orig->_begy - by;
if (nc == 0)
nc = orig->_maxx + orig->_begx - bx;
if ((win = makenew(nl, nc, by, bx)) == NULL)
return (ERR);
win->_nextp = orig->_nextp;
orig->_nextp = win;
win->_orig = orig;
_set_subwin_(orig, win);
return (win);
}
int mvwin(
reg WINDOW *win,
reg int by,
reg int bx )
{
register WINDOW *orig;
register int dy, dx;
if (by + win->_maxy > LINES || bx + win->_maxx > COLS)
return ERR;
dy = by - win->_begy;
dx = bx - win->_begx;
orig = win->_orig;
if (orig == NULL) {
orig = win;
do {
win->_begy += dy;
win->_begx += dx;
_swflags_(win);
win = win->_nextp;
} while (win != orig);
}
else {
if (by < orig->_begy || win->_maxy + dy > orig->_maxy)
return ERR;
if (bx < orig->_begx || win->_maxx + dx > orig->_maxx)
return ERR;
win->_begy = by;
win->_begx = bx;
_swflags_(win);
_set_subwin_(orig, win);
}
touchwin(win);
return OK;
}
