ncursesw-morphos/menu/m_item_vis.c
Thomas E. Dickey 9f479192e3 ncurses 6.2 - patch 20210619
+ improve configure-macro used for dependencies of --disable-leaks such
  as --with-valgrind
+ trim trailing blanks from files
2021-06-20 00:21:42 +00:00

70 lines
3.6 KiB
C

/****************************************************************************
* Copyright 2020,2021 Thomas E. Dickey *
* Copyright 1998-2004,2010 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
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* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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****************************************************************************/
/****************************************************************************
* Author: Juergen Pfeifer, 1995,1997 *
****************************************************************************/
/***************************************************************************
* Module m_item_vis *
* Tell if menu item is visible *
***************************************************************************/
#include "menu.priv.h"
MODULE_ID("$Id: m_item_vis.c,v 1.20 2021/06/17 21:20:30 tom Exp $")
/*---------------------------------------------------------------------------
| Facility : libnmenu
| Function : bool item_visible(const ITEM *item)
|
| Description : A item is visible if it currently appears in the
| subwindow of a posted menu.
|
| Return Values : TRUE if visible
| FALSE if invisible
+--------------------------------------------------------------------------*/
MENU_EXPORT(bool)
item_visible(const ITEM *item)
{
MENU *menu;
T((T_CALLED("item_visible(%p)"), (const void *)item));
if (item &&
(menu = item->imenu) &&
(menu->status & _POSTED) &&
((menu->toprow + menu->arows) > (item->y)) &&
(item->y >= menu->toprow))
returnBool(TRUE);
else
returnBool(FALSE);
}
/* m_item_vis.c ends here */