1 /* $OpenBSD: m_item_vis.c,v 1.7 2010/01/12 23:22:08 nicm Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998-2003,2004 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /**************************************************************************** 32 * Author: Juergen Pfeifer, 1995,1997 * 33 ****************************************************************************/ 34 35 /*************************************************************************** 36 * Module m_item_vis * 37 * Tell if menu item is visible * 38 ***************************************************************************/ 39 40 #include "menu.priv.h" 41 42 MODULE_ID("$Id: m_item_vis.c,v 1.7 2010/01/12 23:22:08 nicm Exp $") 43 44 /*--------------------------------------------------------------------------- 45 | Facility : libnmenu 46 | Function : bool item_visible(const ITEM *item) 47 | 48 | Description : A item is visible if it currently appears in the 49 | subwindow of a posted menu. 50 | 51 | Return Values : TRUE if visible 52 | FALSE if invisible 53 +--------------------------------------------------------------------------*/ 54 NCURSES_EXPORT(bool) 55 item_visible(const ITEM * item) 56 { 57 MENU *menu; 58 59 T((T_CALLED("item_visible(%p)"), item)); 60 if (item && 61 (menu = item->imenu) && 62 (menu->status & _POSTED) && 63 ((menu->toprow + menu->arows) > (item->y)) && 64 (item->y >= menu->toprow)) 65 returnBool(TRUE); 66 else 67 returnBool(FALSE); 68 } 69 70 /* m_item_vis.c ends here */ 71