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116 lines
4.6 KiB
C
116 lines
4.6 KiB
C
/*-----------------------------------------------------------------------------+
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| The ncurses menu library is Copyright (C) 1995-1997 |
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| by Juergen Pfeifer <Juergen.Pfeifer@T-Online.de> |
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| All Rights Reserved. |
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| Permission to use, copy, modify, and distribute this software and its |
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| documentation for any purpose and without fee is hereby granted, provided |
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| that the above copyright notice appear in all copies and that both that |
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| copyright notice and this permission notice appear in supporting |
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| documentation, and that the name of the above listed copyright holder(s) not |
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| be used in advertising or publicity pertaining to distribution of the |
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| software without specific, written prior permission. |
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| |
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| THE ABOVE LISTED COPYRIGHT HOLDER(S) DISCLAIM ALL WARRANTIES WITH REGARD TO |
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| THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT- |
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| NESS, IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR |
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| ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RE- |
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| SULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, |
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| NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH |
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| THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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+-----------------------------------------------------------------------------*/
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/***************************************************************************
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* Module menu_format *
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* Set and get maximum numbers of rows and columns in menus *
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***************************************************************************/
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#include "menu.priv.h"
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MODULE_ID("$Id: m_format.c,v 1.5 1997/05/01 16:47:26 juergen Exp $")
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#define minimum(a,b) ((a)<(b) ? (a): (b))
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/*---------------------------------------------------------------------------
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| Facility : libnmenu
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| Function : int set_menu_format(MENU *menu, int rows, int cols)
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| Description : Sets the maximum number of rows and columns of items
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| that may be displayed at one time on a menu. If the
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| menu contains more items than can be displayed at
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| once, the menu will be scrollable.
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| Return Values : E_OK - success
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| E_BAD_ARGUMENT - invalid values passed
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| E_NOT_CONNECTED - there are no items connected
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| E_POSTED - the menu is already posted
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+--------------------------------------------------------------------------*/
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int set_menu_format(MENU *menu, int rows, int cols)
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{
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int total_rows, total_cols;
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if (rows<0 || cols<0)
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RETURN(E_BAD_ARGUMENT);
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if (menu)
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{
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if ( menu->status & _POSTED )
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RETURN(E_POSTED);
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if (!(menu->items))
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RETURN(E_NOT_CONNECTED);
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if (rows==0)
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rows = menu->frows;
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if (cols==0)
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cols = menu->fcols;
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if (menu->pattern)
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Reset_Pattern(menu);
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menu->frows = rows;
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menu->fcols = cols;
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assert(rows>0 && cols>0);
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total_rows = (menu->nitems - 1)/cols + 1;
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total_cols = (menu->status & O_ROWMAJOR) ?
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minimum(menu->nitems,cols) :
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(menu->nitems-1)/total_rows + 1;
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menu->rows = total_rows;
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menu->cols = total_cols;
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menu->arows = minimum(total_rows,rows);
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menu->toprow = 0;
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menu->curitem = *(menu->items);
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assert(menu->curitem);
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menu->status |= _LINK_NEEDED;
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_nc_Calculate_Item_Length_and_Width(menu);
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}
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else
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{
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if (rows>0) _nc_Default_Menu.frows = rows;
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if (cols>0) _nc_Default_Menu.fcols = cols;
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}
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RETURN(E_OK);
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}
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/*---------------------------------------------------------------------------
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| Facility : libnmenu
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| Function : void menu_format(const MENU *menu, int *rows, int *cols)
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| Description : Returns the maximum number of rows and columns that may
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| be displayed at one time on menu.
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| Return Values : -
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+--------------------------------------------------------------------------*/
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void menu_format(const MENU *menu, int *rows, int *cols)
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{
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if (rows)
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*rows = Normalize_Menu(menu)->frows;
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if (cols)
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*cols = Normalize_Menu(menu)->fcols;
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}
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/* m_format.c ends here */
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