usr/src/lib/libcurses/screen/pechochar.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1988 AT&T */
  28 /*        All Rights Reserved   */
  29
  30 /*
  31  * University Copyright- Copyright (c) 1982, 1986, 1988
  32  * The Regents of the University of California
  33  * All Rights Reserved
  34  *
  35  * University Acknowledgment- Portions of this document are derived from
  36  * software developed by the University of California, Berkeley, and its
  37  * contributors.
  38  */
  39
  40 #pragma ident   "%Z%%M% %I%     %E% SMI"
  41
  42 /*LINTLIBRARY*/
  43
  44 /*
  45  *  These routines short-circuit much of the innards of curses in order to get
  46  *  a single character output to the screen quickly!
  47  *
  48  *  pechochar(WINDOW *pad, chtype ch) is functionally equivalent to
  49  *  waddch(WINDOW *pad, chtype ch), prefresh(WINDOW *pad, `the same arguments
  50  *  as in the last prefresh or pnoutrefresh')
  51  */
  52
  53 #include        <sys/types.h>
  54 #include        "curses_inc.h"
  55
  56 int
  57 pechochar(WINDOW *pad, chtype ch)
  58 {
  59         WINDOW *padwin;
  60         int     rv;
  61
  62         /*
  63          * If pad->_padwin exists(meaning that p*refresh have been
  64          * previously called), call wechochar on it.  Otherwise, call
  65          * wechochar on the pad itself
  66          */
  67
  68         if ((padwin = pad->_padwin) != NULL) {
  69                 padwin->_cury = pad->_cury - padwin->_pary;
  70                 padwin->_curx = pad->_curx - padwin->_parx;
  71                 rv = wechochar(padwin, ch);
  72                 pad->_cury = padwin->_cury + padwin->_pary;
  73                 pad->_curx = padwin->_curx + padwin->_parx;
  74                 return (rv);
  75         } else
  76                 return (wechochar(pad, ch));
  77 }