103 lines
4.4 KiB
C
103 lines
4.4 KiB
C
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/****************************************************************************
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* Copyright (c) 1998 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 <juergen.pfeifer@gmx.net> 1995,1997 *
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****************************************************************************/
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/***************************************************************************
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* Module m_item_top *
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* Set and get top menus item *
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***************************************************************************/
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#include "menu.priv.h"
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MODULE_ID("$Id: m_item_top.c,v 1.4 1999/05/16 17:26:01 juergen Exp $")
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/*---------------------------------------------------------------------------
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| Facility : libnmenu
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| Function : int set_top_row(MENU *menu, int row)
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| Description : Makes the speified row the top row in the menu
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| Return Values : E_OK - success
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| E_BAD_ARGUMENT - not a menu pointer or invalid row
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| E_NOT_CONNECTED - there are no items for the menu
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+--------------------------------------------------------------------------*/
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int set_top_row(MENU * menu, int row)
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{
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ITEM *item;
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if (menu)
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{
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if ( menu->status & _IN_DRIVER )
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RETURN(E_BAD_STATE);
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if (menu->items == (ITEM **)0)
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RETURN(E_NOT_CONNECTED);
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if ((row<0) || (row > (menu->rows - menu->arows)))
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RETURN(E_BAD_ARGUMENT);
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}
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else
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RETURN(E_BAD_ARGUMENT);
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if (row != menu->toprow)
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{
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if (menu->status & _LINK_NEEDED)
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_nc_Link_Items(menu);
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item = menu->items[ (menu->opt&O_ROWMAJOR) ? (row*menu->cols) : row ];
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assert(menu->pattern);
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Reset_Pattern(menu);
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_nc_New_TopRow_and_CurrentItem(menu, row, item);
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}
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RETURN(E_OK);
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}
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/*---------------------------------------------------------------------------
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| Facility : libnmenu
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| Function : int top_row(const MENU *)
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| Description : Return the top row of the menu
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| Return Values : The row number or ERR if there is no row
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+--------------------------------------------------------------------------*/
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int top_row(const MENU * menu)
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{
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if (menu && menu->items && *(menu->items))
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{
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assert( (menu->toprow>=0) && (menu->toprow < menu->rows) );
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return menu->toprow;
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}
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else
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return(ERR);
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}
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/* m_item_top.c ends here */
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