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/* This work is copyrighted. See COPYRIGHT.OLD & COPYRIGHT.NEW for *
* details. If they are missing then this copy is in violation of *
* the copyright conditions. */
/*
** lib_insdel.c
**
** The routine winsdel(win, n).
** positive n insert n lines above current line
** negative n delete n lines starting from current line
**
*/
#include <stdlib.h>
#include "curses.priv.h"
#include "terminfo.h"
int
winsdelln(WINDOW *win, int n)
{
int ret, sscroll, stop, sbot;
T(("winsdel(%x,%d) called", win, n));
if (n == 0)
return OK;
if (n < 0 && win->_cury - n >= win->_maxy)
/* request to delete too many lines */
/* should we truncate to an appropriate number? */
return ERR;
sscroll = win->_scroll;
stop = win->_regtop;
sbot = win->_regbottom;
win->_scroll = TRUE;
win->_regtop = win->_cury;
if (win->_regtop > win->_regbottom)
win->_regbottom = win->_maxy;
ret = wscrl(win, -n);
win->_scroll = sscroll;
win->_regtop = stop;
win->_regbottom = sbot;
return ret;
}
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