usr/src/lib/libeti/menu/common/visible.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 Mircrosystems, Inc.
  28  * All rights reserved.
  29  */
  30
  31 #pragma ident   "%Z%%M% %I%     %E% SMI"        /* SVr4.0 1.5   */
  32
  33 /*LINTLIBRARY*/
  34
  35 #include <sys/types.h>
  36 #include "private.h"
  37
  38 /* Check to see if an item is being displayed on the current page */
  39
  40 int
  41 item_visible(ITEM *i)
  42 {
  43         int bottom;
  44         MENU *m;
  45
  46         if (!i || !Imenu(i)) {
  47                 return (FALSE);
  48         }
  49         m = Imenu(i);
  50         if (Posted(m)) {
  51                 bottom = Top(m) + Height(m) - 1;
  52                 if (Y(i) >= Top(m) && Y(i) <= bottom) {
  53                         return (TRUE);
  54                 }
  55         }
  56         return (FALSE);
  57 }