150276Speter/****************************************************************************
2262629Sdelphij * Copyright (c) 1998-2004,2010 Free Software Foundation, Inc.              *
350276Speter *                                                                          *
450276Speter * Permission is hereby granted, free of charge, to any person obtaining a  *
550276Speter * copy of this software and associated documentation files (the            *
650276Speter * "Software"), to deal in the Software without restriction, including      *
750276Speter * without limitation the rights to use, copy, modify, merge, publish,      *
850276Speter * distribute, distribute with modifications, sublicense, and/or sell       *
950276Speter * copies of the Software, and to permit persons to whom the Software is    *
1050276Speter * furnished to do so, subject to the following conditions:                 *
1150276Speter *                                                                          *
1250276Speter * The above copyright notice and this permission notice shall be included  *
1350276Speter * in all copies or substantial portions of the Software.                   *
1450276Speter *                                                                          *
1550276Speter * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
1650276Speter * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
1750276Speter * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
1850276Speter * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
1950276Speter * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
2050276Speter * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
2150276Speter * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
2250276Speter *                                                                          *
2350276Speter * Except as contained in this notice, the name(s) of the above copyright   *
2450276Speter * holders shall not be used in advertising or otherwise to promote the     *
2550276Speter * sale, use or other dealings in this Software without prior written       *
2650276Speter * authorization.                                                           *
2750276Speter ****************************************************************************/
2850276Speter
2950276Speter/****************************************************************************
30166124Srafan *   Author:  Juergen Pfeifer, 1995,1997                                    *
3150276Speter ****************************************************************************/
3250276Speter
3350276Speter/***************************************************************************
3450276Speter* Module m_item_vis                                                        *
3550276Speter* Tell if menu item is visible                                             *
3650276Speter***************************************************************************/
3750276Speter
3850276Speter#include "menu.priv.h"
3950276Speter
40262629SdelphijMODULE_ID("$Id: m_item_vis.c,v 1.16 2010/01/23 21:20:10 tom Exp $")
4150276Speter
4250276Speter/*---------------------------------------------------------------------------
4350276Speter|   Facility      :  libnmenu
4450276Speter|   Function      :  bool item_visible(const ITEM *item)
4550276Speter|
4650276Speter|   Description   :  A item is visible if it currently appears in the
4750276Speter|                    subwindow of a posted menu.
4850276Speter|
4950276Speter|   Return Values :  TRUE  if visible
5050276Speter|                    FALSE if invisible
5150276Speter+--------------------------------------------------------------------------*/
5276726SpeterNCURSES_EXPORT(bool)
53166124Srafanitem_visible(const ITEM * item)
5450276Speter{
5550276Speter  MENU *menu;
56166124Srafan
57262629Sdelphij  T((T_CALLED("item_visible(%p)"), (const void *)item));
58166124Srafan  if (item &&
59166124Srafan      (menu = item->imenu) &&
60166124Srafan      (menu->status & _POSTED) &&
61166124Srafan      ((menu->toprow + menu->arows) > (item->y)) &&
62166124Srafan      (item->y >= menu->toprow))
63166124Srafan    returnBool(TRUE);
6450276Speter  else
65166124Srafan    returnBool(FALSE);
6650276Speter}
6750276Speter
6850276Speter/* m_item_vis.c ends here */
69