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deleteln.c revision 1.10 
      1 /*	$NetBSD: deleteln.c,v 1.10 1999/04/13 14:08:18 mrg Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1981, 1993, 1994
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "@(#)deleteln.c	8.2 (Berkeley) 5/4/94";
     40 #else
     41 __RCSID("$NetBSD: deleteln.c,v 1.10 1999/04/13 14:08:18 mrg Exp $");
     42 #endif
     43 #endif				/* not lint */
     44 
     45 #include <string.h>
     46 
     47 #include "curses.h"
     48 
     49 /*
     50  * wdeleteln --
     51  *	Delete a line from the screen.  It leaves (cury, curx) unchanged.
     52  */
     53 int
     54 wdeleteln(win)
     55 	WINDOW *win;
     56 {
     57 	int     y, i;
     58 	__LINE *temp;
     59 
     60 #ifdef DEBUG
     61 	__CTRACE("deleteln: (%0.2o)\n", win);
     62 #endif
     63 	temp = win->lines[win->cury];
     64 	for (y = win->cury; y < win->maxy - 1; y++) {
     65 		win->lines[y]->flags &= ~__ISPASTEOL;
     66 		win->lines[y + 1]->flags &= ~__ISPASTEOL;
     67 		if (win->orig == NULL)
     68 			win->lines[y] = win->lines[y + 1];
     69 		else
     70 			(void) memcpy(win->lines[y]->line,
     71 			    win->lines[y + 1]->line,
     72 			    win->maxx * __LDATASIZE);
     73 		__touchline(win, y, 0, (int) win->maxx - 1, 0);
     74 	}
     75 
     76 	if (win->orig == NULL)
     77 		win->lines[y] = temp;
     78 	else
     79 		temp = win->lines[y];
     80 
     81 	for (i = 0; i < win->maxx; i++) {
     82 		temp->line[i].ch = ' ';
     83 		temp->line[i].attr = 0;
     84 	}
     85 	__touchline(win, y, 0, (int) win->maxx - 1, 0);
     86 	if (win->orig == NULL)
     87 		__id_subwins(win);
     88 	return (OK);
     89 }
     90