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
chgat(int n,attr_t attr,short color,const void * opts)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
mvchgat(int y,int x,int n,attr_t attr,short color,const void * opts)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
wchgat(WINDOW * win,int n,attr_t attr,short color,const void * opts)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
mvwchgat(WINDOW * win,int y,int x,int count,attr_t attr,short color,const void * opts)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