lib/libcurses/inch.c

   1 /*      $NetBSD: inch.c,v 1.10 2009/10/06 20:03:27 jdc 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 1.10 2009/10/06 20:03:27 jdc 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         return winch(stdscr);
  50 }
  51
  52 /*
  53  * mvinch --
  54  *      Return character at position (y, x) from stdscr.
  55  */
  56 chtype
  57 mvinch(int y, int x)
  58 {
  59         return mvwinch(stdscr, y, x);
  60 }
  61
  62 /*
  63  * mvwinch --
  64  *      Return character at position (y, x) from the given window.
  65  */
  66 chtype
  67 mvwinch(WINDOW *win, int y, int x)
  68 {
  69         if (wmove(win, y, x) == ERR)
  70                 return ERR;
  71
  72         return winch(win);
  73 }
  74
  75 #endif
  76
  77 /*
  78  * winch --
  79  *      Return character at cursor position.
  80  */
  81 chtype
  82 winch(WINDOW *win)
  83 {
  84         chtype  ch;
  85         attr_t  attr;
  86
  87         ch = (chtype) ((win)->alines[(win)->cury]->line[(win)->curx].ch &
  88             __CHARTEXT);
  89         attr = (attr_t) ((win)->alines[(win)->cury]->line[(win)->curx].attr &
  90             __ATTRIBUTES);
  91         if (__using_color && ((attr & __COLOR) == __default_color))
  92                 attr &= ~__default_color;
  93         return (ch | attr);
  94 }