menu/menu.priv.h

/****************************************************************************
 * Copyright 2020 Thomas E. Dickey                                          *
 * Copyright 1998-2016,2017 Free Software Foundation, Inc.                  *
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/****************************************************************************
 *   Author:  Juergen Pfeifer, 1995,1997                                    *
 ****************************************************************************/

/* $Id: menu.priv.h,v 1.29 2020/05/24 01:40:20 anonymous.maarten Exp $ */

/***************************************************************************
* Module menu.priv.h                                                       *
* Top level private header file for all libnmenu modules                   *
***************************************************************************/

#ifndef MENU_PRIV_H_incl
#define MENU_PRIV_H_incl 1
/* *INDENT-OFF* */

#include "curses.priv.h"

#define NCURSES_OPAQUE_MENU 0

#include "mf_common.h"
#include "menu.h"

/* Backspace code */
#define BS (8)

extern MENU_EXPORT_VAR(ITEM) _nc_Default_Item;
extern MENU_EXPORT_VAR(MENU) _nc_Default_Menu;

/* Normalize item to default if none was given */
#define Normalize_Item( item ) ((item)=(item)?(item):&_nc_Default_Item)

/* Normalize menu to default if none was given */
#define Normalize_Menu( menu ) ((menu)=(menu)?(menu):&_nc_Default_Menu)

#define Get_Menu_Screen( menu ) (menu->userwin ? \
				 _nc_screen_of(menu->userwin) : CURRENT_SCREEN)

/* Get the user defined (framing) window of the menu */
#define Get_Menu_UserWin(menu) ((menu)->userwin ? \
    (menu)->userwin : CURRENT_SCREEN->_stdscr)

/* Normalize menu window */
#define Get_Menu_Window(  menu ) \
   ((menu)->usersub  ? (menu)->usersub  : Get_Menu_UserWin(menu))

/* menu specific status flags */
#define _LINK_NEEDED    (0x04)
#define _MARK_ALLOCATED (0x08)

#define ALL_MENU_OPTS (                 \
		       O_ONEVALUE     | \
		       O_SHOWDESC     | \
		       O_ROWMAJOR     | \
		       O_IGNORECASE   | \
		       O_SHOWMATCH    | \
		       O_NONCYCLIC    | \
		       O_MOUSE_MENU   )

#define ALL_ITEM_OPTS (O_SELECTABLE)

/* Move to the window position of an item and draw it */
#define Move_And_Post_Item(menu,item) \
  {wmove((menu)->win,(menu)->spc_rows*(item)->y,((menu)->itemlen+(menu)->spc_cols)*(item)->x);\
   _nc_Post_Item((menu),(item));}

#define Move_To_Current_Item(menu,item) \
  if ( (item) != (menu)->curitem)\
    {\
      Move_And_Post_Item(menu,item);\
      Move_And_Post_Item(menu,(menu)->curitem);\
    }

/* This macro ensures, that the item becomes visible, if possible with the
   specified row as the top row of the window. If this is not possible,
   the top row will be adjusted and the value is stored in the row argument.
*/
#define Adjust_Current_Item(menu,row,item) \
  { if ((item)->y < row) \
      row = (short) (item)->y; \
    if ( (item)->y >= (row + (menu)->arows) ) \
      row = (short) (( (item)->y < ((menu)->rows - row) ) \
                     ? (item)->y \
		     : (menu)->rows - (menu)->arows); \
    _nc_New_TopRow_and_CurrentItem(menu,row,item); }

/* Reset the match pattern buffer */
#define Reset_Pattern(menu) \
  { (menu)->pindex = 0; \
    (menu)->pattern[0] = '\0'; }

#define UChar(c)	((unsigned char)(c))

/* Internal functions. */
extern MENU_EXPORT(void) _nc_Draw_Menu (const MENU *);
extern MENU_EXPORT(void) _nc_Show_Menu (const MENU *);
extern MENU_EXPORT(void) _nc_Calculate_Item_Length_and_Width (MENU *);
extern MENU_EXPORT(int)  _nc_Calculate_Text_Width(const TEXT *);
extern MENU_EXPORT(void) _nc_Post_Item (const MENU *, const ITEM *);
extern MENU_EXPORT(bool) _nc_Connect_Items (MENU *, ITEM **);
extern MENU_EXPORT(void) _nc_Disconnect_Items (MENU *);
extern MENU_EXPORT(void) _nc_New_TopRow_and_CurrentItem (MENU *,int, ITEM *);
extern MENU_EXPORT(void) _nc_Link_Items (MENU *);
extern MENU_EXPORT(int)  _nc_Match_Next_Character_In_Item_Name (MENU*,int,ITEM**);
extern MENU_EXPORT(int)  _nc_menu_cursor_pos (const MENU* menu, const ITEM* item,
				int* pY, int* pX);

#ifdef TRACE

#define returnItem(code)	TRACE_RETURN1(code,item)
#define returnItemPtr(code)	TRACE_RETURN1(code,item_ptr)
#define returnItemOpts(code)	TRACE_RETURN1(code,item_opts)
#define returnMenu(code)	TRACE_RETURN1(code,menu)
#define returnMenuHook(code)	TRACE_RETURN1(code,menu_hook)
#define returnMenuOpts(code)	TRACE_RETURN1(code,menu_opts)

extern MENU_EXPORT(ITEM *)	    _nc_retrace_item (ITEM *);
extern MENU_EXPORT(ITEM **)	    _nc_retrace_item_ptr (ITEM **);
extern MENU_EXPORT(Item_Options) _nc_retrace_item_opts (Item_Options);
extern MENU_EXPORT(MENU *)	    _nc_retrace_menu (MENU *);
extern MENU_EXPORT(Menu_Hook)    _nc_retrace_menu_hook (Menu_Hook);
extern MENU_EXPORT(Menu_Options) _nc_retrace_menu_opts (Menu_Options);

#else /* !TRACE */

#define returnItem(code)	return code
#define returnItemPtr(code)	return code
#define returnItemOpts(code)	return code
#define returnMenu(code)	return code
#define returnMenuHook(code)	return code
#define returnMenuOpts(code)	return code

#endif /* TRACE/!TRACE */
/* *INDENT-ON* */

#endif /* MENU_PRIV_H_incl */