1 /*-----------------------------------------------------------------------------+ 2 | The ncurses menu library is Copyright (C) 1995-1997 | 3 | by Juergen Pfeifer <Juergen.Pfeifer@T-Online.de> | 4 | All Rights Reserved. | 5 | | 6 | Permission to use, copy, modify, and distribute this software and its | 7 | documentation for any purpose and without fee is hereby granted, provided | 8 | that the above copyright notice appear in all copies and that both that | 9 | copyright notice and this permission notice appear in supporting | 10 | documentation, and that the name of the above listed copyright holder(s) not | 11 | be used in advertising or publicity pertaining to distribution of the | 12 | software without specific, written prior permission. | 13 | | 14 | THE ABOVE LISTED COPYRIGHT HOLDER(S) DISCLAIM ALL WARRANTIES WITH REGARD TO | 15 | THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT- | 16 | NESS, IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR | 17 | ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RE- | 18 | SULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, | 19 | NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH | 20 | THE USE OR PERFORMANCE OF THIS SOFTWARE. | 21 +-----------------------------------------------------------------------------*/ 22 23 /*************************************************************************** 24 * Module menu_item_vis * 25 * Tell if menu item is visible * 26 ***************************************************************************/ 27 28 #include "menu.priv.h" 29 30 MODULE_ID("Id: m_item_vis.c,v 1.6 1997/05/01 16:47:26 juergen Exp $") 31 32 /*--------------------------------------------------------------------------- 33 | Facility : libnmenu 34 | Function : bool item_visible(const ITEM *item) 35 | 36 | Description : A item is visible if it currently appears in the 37 | subwindow of a posted menu. 38 | 39 | Return Values : TRUE if visible 40 | FALSE if invisible 41 +--------------------------------------------------------------------------*/ 42 bool item_visible(const ITEM * item) 43 { 44 MENU *menu; 45 46 if ( item && 47 (menu=item->imenu) && 48 (menu->status & _POSTED) && 49 ( (menu->toprow + menu->arows) > (item->y) ) && 50 ( item->y >= menu->toprow) ) 51 return TRUE; 52 else 53 return FALSE; 54 } 55 56 /* m_item_vis.c ends here */ 57