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/****************************************************************************
* 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_format *
* Set and get maximum numbers of rows and columns in menus *
***************************************************************************/
#include "menu.priv.h"
MODULE_ID("$Id: m_format.c,v 1.15 2004/12/11 23:11:21 tom 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
+--------------------------------------------------------------------------*/
NCURSES_EXPORT(int)
set_menu_format(MENU * menu, int rows, int cols)
{
int total_rows, total_cols;
T((T_CALLED("set_menu_format(%p,%d,%d)"), menu, rows, 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->opt & 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 : -
+--------------------------------------------------------------------------*/
NCURSES_EXPORT(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 */
|
