1/****************************************************************************
2 * Copyright (c) 1998-2004,2010 Free Software Foundation, Inc.              *
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28
29/****************************************************************************
30 *   Author:  Juergen Pfeifer, 1995,1997                                    *
31 ****************************************************************************/
32
33/***************************************************************************
34* Module m_item_vis                                                        *
35* Tell if menu item is visible                                             *
36***************************************************************************/
37
38#include "menu.priv.h"
39
40MODULE_ID("$Id: m_item_vis.c,v 1.16 2010/01/23 21:20:10 tom Exp $")
41
42/*---------------------------------------------------------------------------
43|   Facility      :  libnmenu
44|   Function      :  bool item_visible(const ITEM *item)
45|
46|   Description   :  A item is visible if it currently appears in the
47|                    subwindow of a posted menu.
48|
49|   Return Values :  TRUE  if visible
50|                    FALSE if invisible
51+--------------------------------------------------------------------------*/
52NCURSES_EXPORT(bool)
53item_visible(const ITEM * item)
54{
55  MENU *menu;
56
57  T((T_CALLED("item_visible(%p)"), (const void *)item));
58  if (item &&
59      (menu = item->imenu) &&
60      (menu->status & _POSTED) &&
61      ((menu->toprow + menu->arows) > (item->y)) &&
62      (item->y >= menu->toprow))
63    returnBool(TRUE);
64  else
65    returnBool(FALSE);
66}
67
68/* m_item_vis.c ends here */
69