ncurses-5.7/menu/m_attribs.c

/****************************************************************************
 * Copyright (c) 1998-2003,2004 Free Software Foundation, Inc.              *
 *                                                                          *
 * Permission is hereby granted, free of charge, to any person obtaining a  *
 * copy of this software and associated documentation files (the            *
 * "Software"), to deal in the Software without restriction, including      *
 * without limitation the rights to use, copy, modify, merge, publish,      *
 * distribute, distribute with modifications, sublicense, and/or sell       *
 * copies of the Software, and to permit persons to whom the Software is    *
 * furnished to do so, subject to the following conditions:                 *
 *                                                                          *
 * The above copyright notice and this permission notice shall be included  *
 * in all copies or substantial portions of the Software.                   *
 *                                                                          *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
 *                                                                          *
 * Except as contained in this notice, the name(s) of the above copyright   *
 * holders shall not be used in advertising or otherwise to promote the     *
 * sale, use or other dealings in this Software without prior written       *
 * authorization.                                                           *
 ****************************************************************************/

/****************************************************************************
 *   Author:  Juergen Pfeifer, 1995,1997                                    *
 ****************************************************************************/

/***************************************************************************
* Module m_attribs                                                         *
* Control menus display attributes                                         *
***************************************************************************/

#include "menu.priv.h"

MODULE_ID("$Id: m_attribs.c,v 1.14 2004/12/11 23:29:12 tom Exp $")

/* Macro to redraw menu if it is posted and changed */
#define Refresh_Menu(menu) \
   if ( (menu) && ((menu)->status & _POSTED) )\
   {\
      _nc_Draw_Menu( menu );\
      _nc_Show_Menu( menu );\
   }

/* "Template" macro to generate a function to set a menus attribute */
#define GEN_MENU_ATTR_SET_FCT( name ) \
NCURSES_IMPEXP int NCURSES_API set_menu_ ## name (MENU * menu, chtype attr)\
{\
   T((T_CALLED("set_menu_" #name "(%p,%s)"), menu, _traceattr(attr)));\
   if (!(attr==A_NORMAL || (attr & A_ATTRIBUTES)==attr))\
      RETURN(E_BAD_ARGUMENT);\
   if (menu && ( menu -> name != attr))\
     {\
       (menu -> name) = attr;\
       Refresh_Menu(menu);\
     }\
   Normalize_Menu( menu ) -> name = attr;\
   RETURN(E_OK);\
}

/* "Template" macro to generate a function to get a menu's attribute */
#define GEN_MENU_ATTR_GET_FCT( name ) \
NCURSES_IMPEXP chtype NCURSES_API menu_ ## name (const MENU * menu)\
{\
   T((T_CALLED("menu_" #name "(%p)"), menu));\
   returnAttr(Normalize_Menu( menu ) -> name);\
}

/*---------------------------------------------------------------------------
|   Facility      :  libnmenu  
|   Function      :  int set_menu_fore(MENU *menu, chtype attr)
|   
|   Description   :  Set the attribute for selectable items. In single-
|                    valued menus this is used to highlight the current
|                    item ((i.e. where the cursor is), in multi-valued
|                    menus this is used to highlight the selected items.
|
|   Return Values :  E_OK              - success
|                    E_BAD_ARGUMENT    - an invalid value has been passed   
+--------------------------------------------------------------------------*/
GEN_MENU_ATTR_SET_FCT(fore)

/*---------------------------------------------------------------------------
|   Facility      :  libnmenu  
|   Function      :  chtype menu_fore(const MENU* menu)
|   
|   Description   :  Return the attribute used for selectable items that
|                    are current (single-valued menu) or selected (multi-
|                    valued menu).   
|
|   Return Values :  Attribute value
+--------------------------------------------------------------------------*/
GEN_MENU_ATTR_GET_FCT(fore)

/*---------------------------------------------------------------------------
|   Facility      :  libnmenu  
|   Function      :  int set_menu_back(MENU *menu, chtype attr)
|   
|   Description   :  Set the attribute for selectable but not yet selected
|                    items.
|
|   Return Values :  E_OK             - success  
|                    E_BAD_ARGUMENT   - an invalid value has been passed
+--------------------------------------------------------------------------*/
GEN_MENU_ATTR_SET_FCT(back)

/*---------------------------------------------------------------------------
|   Facility      :  libnmenu  
|   Function      :  chtype menu_back(const MENU *menu)
|   
|   Description   :  Return the attribute used for selectable but not yet
|                    selected items. 
|
|   Return Values :  Attribute value
+--------------------------------------------------------------------------*/
GEN_MENU_ATTR_GET_FCT(back)

/*---------------------------------------------------------------------------
|   Facility      :  libnmenu  
|   Function      :  int set_menu_grey(MENU *menu, chtype attr)
|   
|   Description   :  Set the attribute for unselectable items.
|
|   Return Values :  E_OK             - success
|                    E_BAD_ARGUMENT   - an invalid value has been passed    
+--------------------------------------------------------------------------*/
GEN_MENU_ATTR_SET_FCT(grey)

/*---------------------------------------------------------------------------
|   Facility      :  libnmenu  
|   Function      :  chtype menu_grey(const MENU *menu)
|   
|   Description   :  Return the attribute used for non-selectable items
|
|   Return Values :  Attribute value
+--------------------------------------------------------------------------*/
GEN_MENU_ATTR_GET_FCT(grey)
/* m_attribs.c ends here */