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      1 /*	$NetBSD: inch.c,v 1.15 2024/12/23 02:58:03 blymn Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Julian Coleman.
      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 #ifndef lint
     34 __RCSID("$NetBSD: inch.c,v 1.15 2024/12/23 02:58:03 blymn Exp $");
     35 #endif				/* not lint */
     36 
     37 #include "curses.h"
     38 #include "curses_private.h"
     39 
     40 #ifndef _CURSES_USE_MACROS
     41 
     42 /*
     43  * inch --
     44  *	Return character at cursor position from stdscr.
     45  */
     46 chtype
     47 inch(void)
     48 {
     49 
     50 	return winch(stdscr);
     51 }
     52 
     53 /*
     54  * mvinch --
     55  *      Return character at position (y, x) from stdscr.
     56  */
     57 chtype
     58 mvinch(int y, int x)
     59 {
     60 
     61 	return mvwinch(stdscr, y, x);
     62 }
     63 
     64 /*
     65  * mvwinch --
     66  *      Return character at position (y, x) from the given window.
     67  */
     68 chtype
     69 mvwinch(WINDOW *win, int y, int x)
     70 {
     71 
     72 	if (wmove(win, y, x) == ERR)
     73 		return ERR;
     74 
     75 	return winch(win);
     76 }
     77 
     78 #endif
     79 
     80 /*
     81  * winch --
     82  *	Return character at cursor position.
     83  */
     84 chtype
     85 winch(WINDOW *win)
     86 {
     87 	chtype	ch;
     88 	attr_t	attr;
     89 
     90 	if (__predict_false(win == NULL))
     91 		return ERR;
     92 
     93 	ch = (chtype) ((win)->alines[(win)->cury]->line[(win)->curx].ch &
     94 	    __CHARTEXT);
     95 	attr = (attr_t) ((win)->alines[(win)->cury]->line[(win)->curx].attr &
     96 	    __ATTRIBUTES);
     97 	if (__using_color && ((attr & __COLOR) == __default_color))
     98 		attr &= ~__COLOR;
     99 	return (ch | attr);
    100 }
    101