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/* $OpenBSD: m_format.c,v 1.3 1997/12/03 05:31:18 millert Exp $ */
/*-----------------------------------------------------------------------------+
| The ncurses menu library is Copyright (C) 1995-1997 |
| by Juergen Pfeifer <Juergen.Pfeifer@T-Online.de> |
| All Rights Reserved. |
| |
| Permission to use, copy, modify, and distribute this software and its |
| documentation for any purpose and without fee is hereby granted, provided |
| that the above copyright notice appear in all copies and that both that |
| copyright notice and this permission notice appear in supporting |
| documentation, and that the name of the above listed copyright holder(s) not |
| be used in advertising or publicity pertaining to distribution of the |
| software without specific, written prior permission. |
| |
| THE ABOVE LISTED COPYRIGHT HOLDER(S) DISCLAIM ALL WARRANTIES WITH REGARD TO |
| THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT- |
| NESS, IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR |
| ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RE- |
| SULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, |
| NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH |
| THE USE OR PERFORMANCE OF THIS SOFTWARE. |
+-----------------------------------------------------------------------------*/
/***************************************************************************
* Module m_format *
* Set and get maximum numbers of rows and columns in menus *
***************************************************************************/
#include "menu.priv.h"
MODULE_ID("Id: m_format.c,v 1.6 1997/10/21 08:44:31 juergen Exp $")
#define minimum(a,b) ((a)<(b) ? (a): (b))
/*---------------------------------------------------------------------------
| Facility : libnmenu
| Function : int set_menu_format(MENU *menu, int rows, int cols)
|
| Description : Sets the maximum number of rows and columns of items
| that may be displayed at one time on a menu. If the
| menu contains more items than can be displayed at
| once, the menu will be scrollable.
|
| Return Values : E_OK - success
| E_BAD_ARGUMENT - invalid values passed
| E_NOT_CONNECTED - there are no items connected
| E_POSTED - the menu is already posted
+--------------------------------------------------------------------------*/
int set_menu_format(MENU *menu, int rows, int cols)
{
int total_rows, total_cols;
if (rows<0 || cols<0)
RETURN(E_BAD_ARGUMENT);
if (menu)
{
if ( menu->status & _POSTED )
RETURN(E_POSTED);
if (!(menu->items))
RETURN(E_NOT_CONNECTED);
if (rows==0)
rows = menu->frows;
if (cols==0)
cols = menu->fcols;
if (menu->pattern)
Reset_Pattern(menu);
menu->frows = rows;
menu->fcols = cols;
assert(rows>0 && cols>0);
total_rows = (menu->nitems - 1)/cols + 1;
total_cols = (menu->status & O_ROWMAJOR) ?
minimum(menu->nitems,cols) :
(menu->nitems-1)/total_rows + 1;
menu->rows = total_rows;
menu->cols = total_cols;
menu->arows = minimum(total_rows,rows);
menu->toprow = 0;
menu->curitem = *(menu->items);
assert(menu->curitem);
menu->status |= _LINK_NEEDED;
_nc_Calculate_Item_Length_and_Width(menu);
}
else
{
if (rows>0) _nc_Default_Menu.frows = rows;
if (cols>0) _nc_Default_Menu.fcols = cols;
}
RETURN(E_OK);
}
/*---------------------------------------------------------------------------
| Facility : libnmenu
| Function : void menu_format(const MENU *menu, int *rows, int *cols)
|
| Description : Returns the maximum number of rows and columns that may
| be displayed at one time on menu.
|
| Return Values : -
+--------------------------------------------------------------------------*/
void menu_format(const MENU *menu, int *rows, int *cols)
{
if (rows)
*rows = Normalize_Menu(menu)->frows;
if (cols)
*cols = Normalize_Menu(menu)->fcols;
}
/* m_format.c ends here */
|
