diff options
Diffstat (limited to 'ncurses-5.3/menu/m_format.c')
| -rw-r--r-- | ncurses-5.3/menu/m_format.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/ncurses-5.3/menu/m_format.c b/ncurses-5.3/menu/m_format.c new file mode 100644 index 0000000..cf6a7cb --- /dev/null +++ b/ncurses-5.3/menu/m_format.c @@ -0,0 +1,128 @@ +/**************************************************************************** + * Copyright (c) 1998,2000 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 * + * Contact: http://www.familiepfeifer.de/Contact.aspx?Lang=en * + ****************************************************************************/ + +/*************************************************************************** +* Module m_format * +* Set and get maximum numbers of rows and columns in menus * +***************************************************************************/ + +#include "menu.priv.h" + +MODULE_ID("$Id$") + +#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; + + 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 : - ++--------------------------------------------------------------------------*/ +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 */ |