1 /* $NetBSD: chgat.c,v 1.10 2024/12/23 02:58:03 blymn Exp $ */ 2 3 /* 4 * Copyright (c) 2009 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Joerg Sonnenberger. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __RCSID("$NetBSD: chgat.c,v 1.10 2024/12/23 02:58:03 blymn Exp $"); 34 35 #include "curses.h" 36 #include "curses_private.h" 37 38 int 39 chgat(int n, attr_t attr, short color, const void *opts) 40 { 41 return wchgat(stdscr, n, attr, color, opts); 42 } 43 44 int 45 mvchgat(int y, int x, int n, attr_t attr, short color, 46 const void *opts) 47 { 48 return mvwchgat(stdscr, y, x, n, attr, color, opts); 49 } 50 51 int 52 wchgat(WINDOW *win, int n, attr_t attr, short color, const void *opts) 53 { 54 return mvwchgat(win, win->cury, win->curx, n, attr, color, opts); 55 } 56 57 int 58 mvwchgat(WINDOW *win , int y, int x, int count, attr_t attr, short color, 59 const void *opts) 60 { 61 __LINE *lp; 62 __LDATA *lc; 63 64 if (__predict_false(win == NULL)) 65 return ERR; 66 67 if (x < 0 || y < 0) 68 return (ERR); 69 if (x >= win->maxx || y >= win->maxy) 70 return (ERR); 71 72 attr = (attr & ~__COLOR) | COLOR_PAIR(color); 73 74 if (count < 0 || count > win->maxx - x) 75 count = win->maxx - x; 76 77 __CTRACE(__CTRACE_ATTR, "mvwchgat: x: %d y: %d count: %d attr: 0x%x " 78 "color pair %d\n", x, y, count, (attr & ~__COLOR), 79 PAIR_NUMBER(color)); 80 lp = win->alines[y]; 81 lc = &lp->line[x]; 82 83 if (x + win->ch_off < *lp->firstchp) 84 *lp->firstchp = x + win->ch_off; 85 86 if (x + win->ch_off + count > *lp->lastchp) 87 *lp->lastchp = x + win->ch_off + count; 88 89 lp->flags |= __ISDIRTY; 90 91 while (count-- > 0) { 92 #ifdef HAVE_WCHAR 93 lc->attr = (lc->attr & ~WA_ATTRIBUTES) | attr; 94 #else 95 lc->attr = attr; 96 #endif 97 ++lc; 98 } 99 100 return OK; 101 } 102