1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 1997 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 /* 31 * University Copyright- Copyright (c) 1982, 1986, 1988 32 * The Regents of the University of California 33 * All Rights Reserved 34 * 35 * University Acknowledgment- Portions of this document are derived from 36 * software developed by the University of California, Berkeley, and its 37 * contributors. 38 */ 39 40 /*LINTLIBRARY*/ 41 42 /* 43 * This routine indicates to curses that a screen line is garbaged and 44 * should be thrown away before having anything written over the top of it. 45 * It could be used for programs such as editors which want a command to 46 * redraw just a single line. Such a command could be used in cases where 47 * there is a noisy line and redrawing the entire screen would be subject 48 * to even more noise. Just redrawing the single line gives some semblance 49 * of hope that it would show up unblemished. 50 * 51 * This is a more refined version of clearok 52 */ 53 54 #include <sys/types.h> 55 #include "curses_inc.h" 56 57 int 58 wredrawln(WINDOW *win, int begline, int numlines) 59 { 60 short *firstch, *efirstch; 61 62 if (numlines <= 0) 63 return (ERR); 64 if (begline < 0) 65 begline = 0; 66 if (begline + numlines > win->_maxy) 67 numlines = win->_maxy - begline; 68 69 firstch = win->_firstch + begline; 70 efirstch = firstch + numlines; 71 while (firstch < efirstch) 72 *firstch++ = _REDRAW; 73 74 return (win->_immed ? wrefresh(win) : OK); 75 } 76