/*
* vs_scroll --
* Scroll the screen for output.
*/
static void
vs_scroll(SCR *sp, int *continuep, sw_t wtype)
{
GS *gp;
VI_PRIVATE *vip;
gp = sp->gp;
vip = VIP(sp);
if (!IS_ONELINE(sp)) {
/*
* Scroll the screen. Instead of scrolling the entire screen,
* delete the line above the first line output so preserve the
* maximum amount of the screen.
*/
(void)gp->scr_move(sp, vip->totalcount <
sp->rows ? LASTLINE(sp) - vip->totalcount : 0, 0);
(void)gp->scr_deleteln(sp);
/* If there are screens below us, push them back into place. */
if (sp->q.cqe_next != (void *)&sp->wp->scrq) {
(void)gp->scr_move(sp, LASTLINE(sp), 0);
(void)gp->scr_insertln(sp);
}
}
if (wtype == SCROLL_W_QUIT && vip->linecount < sp->t_maxrows)
return;
vs_wait(sp, continuep, wtype);
}
