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