pnoutrfrsh.c

<B>Digital的Unix操作系统VAX 4.2源码</B>

#ifndef lint
static	char	*sccsid = "@(#)pnoutrfrsh.c	4.2	(ULTRIX)	11/15/90";
#endif lint

/************************************************************************
 *									*
 *       Copyright (c) Digital Equipment Corporation, 1988, 1990	*
 *									*
 *   All Rights Reserved.  Unpublished rights  reserved  under  the	*
 *   copyright laws of the United States.				*
 *									*
 *   The software contained on this media  is  proprietary  to  and	*
 *   embodies  the  confidential  technology  of  Digital Equipment	*
 *   Corporation.  Possession, use, duplication or dissemination of	*
 *   the  software and media is authorized only pursuant to a valid	*
 *   written license from Digital Equipment Corporation.		*
 *									*
 *   RESTRICTED RIGHTS LEGEND   Use, duplication, or disclosure  by	*
 *   the U.S. Government is subject to restrictions as set forth in	*
 *   Subparagraph (c)(1)(ii)  of  DFARS  252.227-7013,  or  in  FAR	*
 *   52.227-19, as applicable.						*
 *									*
 *   This software is  derived  from  software  received  from  the	*
 *   University    of   California,   Berkeley,   and   from   Bell	*
 *   Laboratories.  Use, duplication, or disclosure is  subject  to	*
 *   restrictions  under  license  agreements  with  University  of	*
 *   California and with AT&T.						*
 *									*
 ************************************************************************/
/**/

/*
 * make the current screen look like "win" over the area covered by
 * win.
 *
 */

/*	@(#) pnoutrfrsh.c: 1.1 10/15/83	(1.14	3/6/83)	*/

/*
 * Modification History
 *
 * 10/03/90 GWS  reset screen cursor position to current pad cursor
 *		  position + screen coordinates
 */


#include	"curses.ext"

extern	WINDOW *lwin;

/* Put out pad but don't actually update screen. */
pnoutrefresh(pad, pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol)
register WINDOW	*pad;
int pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol;
{
	register int pr, r, c;
	register chtype	*nsp, *lch;

# ifdef DEBUG
	if(outf) fprintf(outf, "PREFRESH(pad %x, pcorner %d,%d, smin %d,%d, smax %d,%d)", pad, pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol);
	_dumpwin(pad);
	if(outf) fprintf(outf, "PREFRESH:\n\tfirstch\tlastch\n");
# endif

	/* Make sure everything fits */
	if (pminrow < 0) pminrow = 0;
	if (pmincol < 0) pmincol = 0;
	if (sminrow < 0) sminrow = 0;
	if (smincol < 0) smincol = 0;
	if (smaxrow >= lines) smaxrow = lines-1;
	if (smaxcol >= columns) smaxcol = columns-1;
	if (smaxrow - sminrow > pad->_maxy - pminrow)
		smaxrow = sminrow + (pad->_maxy - pminrow);

	/* Copy it out, like a refresh, but appropriately offset */
	for (pr=pminrow,r=sminrow; r <= smaxrow; r++,pr++) {
		/* No record of what previous loc looked like, so do it all */
		lch = &pad->_y[pr][pad->_maxx-1];
		nsp = &pad->_y[pr][pmincol];
		_ll_move(r, smincol);
		for (c=smincol; nsp<=lch; c++) {
			if (SP->virt_x++ < columns && c <= smaxcol)
				*SP->curptr++ = *nsp++;
			else
				break;
		}
		pad->_firstch[pr] = _NOCHANGE;
	}

	_ll_move(sminrow + pad->_cury, smincol + pad->_curx);

	lwin = pad;
	return OK;
}