171 lines
6.8 KiB
C
171 lines
6.8 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_opts *
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* Menus option routines *
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***************************************************************************/
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#include "menu.priv.h"
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MODULE_ID("$Id: m_opts.c,v 1.12 1999/05/16 17:27:08 juergen Exp $")
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/*---------------------------------------------------------------------------
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| Facility : libnmenu
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| Function : int set_menu_opts(MENU *menu, Menu_Options opts)
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| Description : Set the options for this menu. If the new settings
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| end up in a change of the geometry of the menu, it
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| will be recalculated. This operation is forbidden if
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| the menu is already posted.
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| Return Values : E_OK - success
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| E_BAD_ARGUMENT - invalid menu options
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| E_POSTED - menu is already posted
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+--------------------------------------------------------------------------*/
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int set_menu_opts(MENU * menu, Menu_Options opts)
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{
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opts &= ALL_MENU_OPTS;
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if (opts & ~ALL_MENU_OPTS)
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RETURN(E_BAD_ARGUMENT);
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if (menu)
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{
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if ( menu->status & _POSTED )
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RETURN(E_POSTED);
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if ( (opts&O_ROWMAJOR) != (menu->opt&O_ROWMAJOR))
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{
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/* we need this only if the layout really changed ... */
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if (menu->items && menu->items[0])
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{
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menu->toprow = 0;
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menu->curitem = menu->items[0];
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assert(menu->curitem);
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set_menu_format( menu, menu->frows, menu->fcols );
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}
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}
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menu->opt = opts;
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if (opts & O_ONEVALUE)
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{
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ITEM **item;
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if ( ((item=menu->items) != (ITEM**)0) )
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for(;*item;item++)
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(*item)->value = FALSE;
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}
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if (opts & O_SHOWDESC) /* this also changes the geometry */
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_nc_Calculate_Item_Length_and_Width( menu );
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}
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else
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_nc_Default_Menu.opt = opts;
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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 menu_opts_off(MENU *menu, Menu_Options opts)
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| Description : Switch off the options for this menu. If the new settings
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| end up in a change of the geometry of the menu, it
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| will be recalculated. This operation is forbidden if
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| the menu is already posted.
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| Return Values : E_OK - success
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| E_BAD_ARGUMENT - invalid options
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| E_POSTED - menu is already posted
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+--------------------------------------------------------------------------*/
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int menu_opts_off(MENU *menu, Menu_Options opts)
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{
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MENU *cmenu = menu; /* use a copy because set_menu_opts must detect
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NULL menu itself to adjust its behaviour */
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opts &= ALL_MENU_OPTS;
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if (opts & ~ALL_MENU_OPTS)
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RETURN(E_BAD_ARGUMENT);
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else
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{
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Normalize_Menu(cmenu);
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opts = cmenu->opt & ~opts;
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return set_menu_opts( menu, opts );
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}
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}
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/*---------------------------------------------------------------------------
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| Facility : libnmenu
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| Function : int menu_opts_on(MENU *menu, Menu_Options opts)
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| Description : Switch on the options for this menu. If the new settings
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| end up in a change of the geometry of the menu, it
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| will be recalculated. This operation is forbidden if
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| the menu is already posted.
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| Return Values : E_OK - success
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| E_BAD_ARGUMENT - invalid menu options
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| E_POSTED - menu is already posted
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+--------------------------------------------------------------------------*/
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int menu_opts_on(MENU * menu, Menu_Options opts)
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{
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MENU *cmenu = menu; /* use a copy because set_menu_opts must detect
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NULL menu itself to adjust its behaviour */
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opts &= ALL_MENU_OPTS;
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if (opts & ~ALL_MENU_OPTS)
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RETURN(E_BAD_ARGUMENT);
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else
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{
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Normalize_Menu(cmenu);
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opts = cmenu->opt | opts;
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return set_menu_opts(menu, opts);
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}
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}
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/*---------------------------------------------------------------------------
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| Facility : libnmenu
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| Function : Menu_Options menu_opts(const MENU *menu)
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| Description : Return the options for this menu.
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| Return Values : Menu options
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+--------------------------------------------------------------------------*/
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Menu_Options menu_opts(const MENU *menu)
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{
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return (ALL_MENU_OPTS & Normalize_Menu( menu )->opt);
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}
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/* m_opts.c ends here */
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