1 /**************************************************************************** 2 * Copyright (c) 1998 Free Software Foundation, Inc. * 3 * * 4 * Permission is hereby granted, free of charge, to any person obtaining a * 5 * copy of this software and associated documentation files (the * 6 * "Software"), to deal in the Software without restriction, including * 7 * without limitation the rights to use, copy, modify, merge, publish, * 8 * distribute, distribute with modifications, sublicense, and/or sell * 9 * copies of the Software, and to permit persons to whom the Software is * 10 * furnished to do so, subject to the following conditions: * 11 * * 12 * The above copyright notice and this permission notice shall be included * 13 * in all copies or substantial portions of the Software. * 14 * * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 22 * * 23 * Except as contained in this notice, the name(s) of the above copyright * 24 * holders shall not be used in advertising or otherwise to promote the * 25 * sale, use or other dealings in this Software without prior written * 26 * authorization. * 27 ****************************************************************************/ 28 29 /**************************************************************************** 30 * Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1995,1997 * 31 ****************************************************************************/ 32 33 /*************************************************************************** 34 * Module m_opts * 35 * Menus option routines * 36 ***************************************************************************/ 37 38 #include "menu.priv.h" 39 40 MODULE_ID("$Id: m_opts.c,v 1.12 1999/05/16 17:27:08 juergen Exp $") 41 42 /*--------------------------------------------------------------------------- 43 | Facility : libnmenu 44 | Function : int set_menu_opts(MENU *menu, Menu_Options opts) 45 | 46 | Description : Set the options for this menu. If the new settings 47 | end up in a change of the geometry of the menu, it 48 | will be recalculated. This operation is forbidden if 49 | the menu is already posted. 50 | 51 | Return Values : E_OK - success 52 | E_BAD_ARGUMENT - invalid menu options 53 | E_POSTED - menu is already posted 54 +--------------------------------------------------------------------------*/ 55 int set_menu_opts(MENU * menu, Menu_Options opts) 56 { 57 opts &= ALL_MENU_OPTS; 58 59 if (opts & ~ALL_MENU_OPTS) 60 RETURN(E_BAD_ARGUMENT); 61 62 if (menu) 63 { 64 if ( menu->status & _POSTED ) 65 RETURN(E_POSTED); 66 67 if ( (opts&O_ROWMAJOR) != (menu->opt&O_ROWMAJOR)) 68 { 69 /* we need this only if the layout really changed ... */ 70 if (menu->items && menu->items[0]) 71 { 72 menu->toprow = 0; 73 menu->curitem = menu->items[0]; 74 assert(menu->curitem); 75 set_menu_format( menu, menu->frows, menu->fcols ); 76 } 77 } 78 79 menu->opt = opts; 80 81 if (opts & O_ONEVALUE) 82 { 83 ITEM **item; 84 85 if ( ((item=menu->items) != (ITEM**)0) ) 86 for(;*item;item++) 87 (*item)->value = FALSE; 88 } 89 90 if (opts & O_SHOWDESC) /* this also changes the geometry */ 91 _nc_Calculate_Item_Length_and_Width( menu ); 92 } 93 else 94 _nc_Default_Menu.opt = opts; 95 96 RETURN(E_OK); 97 } 98 99 /*--------------------------------------------------------------------------- 100 | Facility : libnmenu 101 | Function : int menu_opts_off(MENU *menu, Menu_Options opts) 102 | 103 | Description : Switch off the options for this menu. If the new settings 104 | end up in a change of the geometry of the menu, it 105 | will be recalculated. This operation is forbidden if 106 | the menu is already posted. 107 | 108 | Return Values : E_OK - success 109 | E_BAD_ARGUMENT - invalid options 110 | E_POSTED - menu is already posted 111 +--------------------------------------------------------------------------*/ 112 int menu_opts_off(MENU *menu, Menu_Options opts) 113 { 114 MENU *cmenu = menu; /* use a copy because set_menu_opts must detect 115 NULL menu itself to adjust its behaviour */ 116 117 opts &= ALL_MENU_OPTS; 118 if (opts & ~ALL_MENU_OPTS) 119 RETURN(E_BAD_ARGUMENT); 120 else 121 { 122 Normalize_Menu(cmenu); 123 opts = cmenu->opt & ~opts; 124 return set_menu_opts( menu, opts ); 125 } 126 } 127 128 /*--------------------------------------------------------------------------- 129 | Facility : libnmenu 130 | Function : int menu_opts_on(MENU *menu, Menu_Options opts) 131 | 132 | Description : Switch on the options for this menu. If the new settings 133 | end up in a change of the geometry of the menu, it 134 | will be recalculated. This operation is forbidden if 135 | the menu is already posted. 136 | 137 | Return Values : E_OK - success 138 | E_BAD_ARGUMENT - invalid menu options 139 | E_POSTED - menu is already posted 140 +--------------------------------------------------------------------------*/ 141 int menu_opts_on(MENU * menu, Menu_Options opts) 142 { 143 MENU *cmenu = menu; /* use a copy because set_menu_opts must detect 144 NULL menu itself to adjust its behaviour */ 145 146 opts &= ALL_MENU_OPTS; 147 if (opts & ~ALL_MENU_OPTS) 148 RETURN(E_BAD_ARGUMENT); 149 else 150 { 151 Normalize_Menu(cmenu); 152 opts = cmenu->opt | opts; 153 return set_menu_opts(menu, opts); 154 } 155 } 156 157 /*--------------------------------------------------------------------------- 158 | Facility : libnmenu 159 | Function : Menu_Options menu_opts(const MENU *menu) 160 | 161 | Description : Return the options for this menu. 162 | 163 | Return Values : Menu options 164 +--------------------------------------------------------------------------*/ 165 Menu_Options menu_opts(const MENU *menu) 166 { 167 return (ALL_MENU_OPTS & Normalize_Menu( menu )->opt); 168 } 169 170 /* m_opts.c ends here */ 171