69 lines
3.5 KiB
C
69 lines
3.5 KiB
C
/****************************************************************************
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* Copyright (c) 1998-2004,2010 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Author: Juergen Pfeifer, 1995,1997 *
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****************************************************************************/
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/***************************************************************************
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* Module m_item_vis *
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* Tell if menu item is visible *
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***************************************************************************/
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#include "menu.priv.h"
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MODULE_ID("$Id: m_item_vis.c,v 1.16 2010/01/23 21:20:10 tom Exp $")
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/*---------------------------------------------------------------------------
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| Facility : libnmenu
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| Function : bool item_visible(const ITEM *item)
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| Description : A item is visible if it currently appears in the
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| subwindow of a posted menu.
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| Return Values : TRUE if visible
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| FALSE if invisible
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+--------------------------------------------------------------------------*/
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NCURSES_EXPORT(bool)
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item_visible(const ITEM * item)
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{
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MENU *menu;
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T((T_CALLED("item_visible(%p)"), (const void *)item));
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if (item &&
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(menu = item->imenu) &&
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(menu->status & _POSTED) &&
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((menu->toprow + menu->arows) > (item->y)) &&
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(item->y >= menu->toprow))
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returnBool(TRUE);
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else
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returnBool(FALSE);
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}
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/* m_item_vis.c ends here */
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