128 lines
5.3 KiB
C
128 lines
5.3 KiB
C
/****************************************************************************
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* Copyright (c) 1998,2000 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1995,1997 *
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****************************************************************************/
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/***************************************************************************
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* Module m_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 1.10 2000/12/10 02:16:48 tom 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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NCURSES_EXPORT(int)
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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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NCURSES_EXPORT(void)
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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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