githubmirror/ncurses

menu/m_scale.c
77 строк4 KB
Thomas E. Dickey
ncurses 6.2 - patch 20200212
12 фев 2020, 12:50
12 фев 2020, 12:5047d2fb4
/****************************************************************************
 * Copyright 2020 Thomas E. Dickey                                          *
 * Copyright 1998-2004,2010 Free Software Foundation, Inc.                  *
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 ****************************************************************************/

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

/***************************************************************************
* Module m_scale                                                           *
* Menu scaling routine                                                     *
***************************************************************************/

#include "menu.priv.h"

MODULE_ID("$Id: m_scale.c,v 1.11 2020/02/02 23:34:34 tom Exp $")

/*---------------------------------------------------------------------------
|   Facility      :  libnmenu  
|   Function      :  int scale_menu(const MENU *menu)
|   
|   Description   :  Returns the minimum window size necessary for the
|                    subwindow of menu.  
|
|   Return Values :  E_OK                  - success
|                    E_BAD_ARGUMENT        - invalid menu pointer
|                    E_NOT_CONNECTED       - no items are connected to menu
+--------------------------------------------------------------------------*/
NCURSES_EXPORT(int)
scale_menu(const MENU * menu, int *rows, int *cols)
{
  T((T_CALLED("scale_menu(%p,%p,%p)"),
     (const void *)menu,
     (void *)rows,
     (void *)cols));

  if (!menu)
    RETURN(E_BAD_ARGUMENT);

  if (menu->items && *(menu->items))
    {
      if (rows)
	*rows = menu->height;
      if (cols)
	*cols = menu->width;
      RETURN(E_OK);
    }
  else
    RETURN(E_NOT_CONNECTED);
}

/* m_scale.c ends here */