diff options
Diffstat (limited to 'ncurses-5.3/menu/m_item_top.c')
| -rw-r--r-- | ncurses-5.3/menu/m_item_top.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/ncurses-5.3/menu/m_item_top.c b/ncurses-5.3/menu/m_item_top.c new file mode 100644 index 0000000..f86fbec --- /dev/null +++ b/ncurses-5.3/menu/m_item_top.c @@ -0,0 +1,105 @@ +/**************************************************************************** + * 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_item_top * +* Set and get top menus item * +***************************************************************************/ + +#include "menu.priv.h" + +MODULE_ID("$Id$") + +/*--------------------------------------------------------------------------- +| Facility : libnmenu +| Function : int set_top_row(MENU *menu, int row) +| +| Description : Makes the speified row the top row in the menu +| +| Return Values : E_OK - success +| E_BAD_ARGUMENT - not a menu pointer or invalid row +| E_NOT_CONNECTED - there are no items for the menu ++--------------------------------------------------------------------------*/ +NCURSES_EXPORT(int) +set_top_row (MENU * menu, int row) +{ + ITEM *item; + + if (menu) + { + if ( menu->status & _IN_DRIVER ) + RETURN(E_BAD_STATE); + if (menu->items == (ITEM **)0) + RETURN(E_NOT_CONNECTED); + + if ((row<0) || (row > (menu->rows - menu->arows))) + RETURN(E_BAD_ARGUMENT); + } + else + RETURN(E_BAD_ARGUMENT); + + if (row != menu->toprow) + { + if (menu->status & _LINK_NEEDED) + _nc_Link_Items(menu); + + item = menu->items[ (menu->opt&O_ROWMAJOR) ? (row*menu->cols) : row ]; + assert(menu->pattern); + Reset_Pattern(menu); + _nc_New_TopRow_and_CurrentItem(menu, row, item); + } + + RETURN(E_OK); +} + +/*--------------------------------------------------------------------------- +| Facility : libnmenu +| Function : int top_row(const MENU *) +| +| Description : Return the top row of the menu +| +| Return Values : The row number or ERR if there is no row ++--------------------------------------------------------------------------*/ +NCURSES_EXPORT(int) +top_row (const MENU * menu) +{ + if (menu && menu->items && *(menu->items)) + { + assert( (menu->toprow>=0) && (menu->toprow < menu->rows) ); + return menu->toprow; + } + else + return(ERR); +} + +/* m_item_top.c ends here */ |