1 /****************************************************************************
2 * Copyright (c) 1998,2000 Free Software Foundation, Inc. *
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5 * copy of this software and associated documentation files (the *
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9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
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27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Juergen Pfeifer, 1995,1997 *
31 * Contact: http://www.familiepfeifer.de/Contact.aspx?Lang=en *
32 ****************************************************************************/
34 /***************************************************************************
36 * Set and get maximum numbers of rows and columns in menus *
37 ***************************************************************************/
39 #include "menu.priv.h"
41 MODULE_ID("$Id: m_format.c,v 1.11 2002/07/06 15:22:16 juergen Exp $")
43 #define minimum(a,b) ((a)<(b) ? (a): (b))
45 /*---------------------------------------------------------------------------
47 | Function : int set_menu_format(MENU *menu, int rows, int cols)
49 | Description : Sets the maximum number of rows and columns of items
50 | that may be displayed at one time on a menu. If the
51 | menu contains more items than can be displayed at
52 | once, the menu will be scrollable.
54 | Return Values : E_OK - success
55 | E_BAD_ARGUMENT - invalid values passed
56 | E_NOT_CONNECTED - there are no items connected
57 | E_POSTED - the menu is already posted
58 +--------------------------------------------------------------------------*/
60 set_menu_format (MENU *menu, int rows, int cols)
62 int total_rows, total_cols;
65 RETURN(E_BAD_ARGUMENT);
69 if ( menu->status & _POSTED )
73 RETURN(E_NOT_CONNECTED);
86 assert(rows>0 && cols>0);
87 total_rows = (menu->nitems - 1)/cols + 1;
88 total_cols = (menu->status & O_ROWMAJOR) ?
89 minimum(menu->nitems,cols) :
90 (menu->nitems-1)/total_rows + 1;
92 menu->rows = total_rows;
93 menu->cols = total_cols;
94 menu->arows = minimum(total_rows,rows);
96 menu->curitem = *(menu->items);
97 assert(menu->curitem);
98 menu->status |= _LINK_NEEDED;
99 _nc_Calculate_Item_Length_and_Width(menu);
103 if (rows>0) _nc_Default_Menu.frows = rows;
104 if (cols>0) _nc_Default_Menu.fcols = cols;
110 /*---------------------------------------------------------------------------
111 | Facility : libnmenu
112 | Function : void menu_format(const MENU *menu, int *rows, int *cols)
114 | Description : Returns the maximum number of rows and columns that may
115 | be displayed at one time on menu.
118 +--------------------------------------------------------------------------*/
120 menu_format (const MENU *menu, int *rows, int *cols)
123 *rows = Normalize_Menu(menu)->frows;
125 *cols = Normalize_Menu(menu)->fcols;
128 /* m_format.c ends here */