usr/src/lib/libcurses/screen/pechowchar.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 /*  Copyright (c) 1988 AT&T */
  23 /*    All Rights Reserved   */
  24
  25
  26 /*
  27  *      Copyright (c) 1997, by Sun Microsystems, Inc.
  28  *      All rights reserved.
  29  */
  30
  31 #pragma ident   "%Z%%M% %I%     %E% SMI"
  32
  33 /*LINTLIBRARY*/
  34
  35 /*
  36  *  These routines short-circuit much of the innards of curses in order to get
  37  *  a single character output to the screen quickly!
  38  *
  39  *  pechochar(WINDOW *pad, chtype ch) is functionally equivalent to
  40  *  waddch(WINDOW *pad, chtype ch), prefresh(WINDOW *pad, `the same arguments
  41  *  as in the last prefresh or pnoutrefresh')
  42  */
  43
  44 #include        <sys/types.h>
  45 #include        "curses_inc.h"
  46
  47 int
  48 pechowchar(WINDOW *pad, chtype ch)
  49 {
  50         WINDOW *padwin;
  51         int     rv;
  52
  53         /*
  54          * If pad->_padwin exists(meaning that p*refresh have been
  55          * previously called), call wechochar on it.  Otherwise, call
  56          * wechochar on the pad itself
  57          */
  58
  59         if ((padwin = pad->_padwin) != NULL) {
  60                 padwin->_cury = pad->_cury - padwin->_pary;
  61                 padwin->_curx = pad->_curx - padwin->_parx;
  62                 rv = wechowchar(padwin, ch);
  63                 pad->_cury = padwin->_cury + padwin->_pary;
  64                 pad->_curx = padwin->_curx + padwin->_parx;
  65                 return (rv);
  66         } else
  67         return (wechowchar(pad, ch));
  68 }