1 /* $OpenBSD: m_format.c,v 1.6 2001/01/22 18:02:03 millert Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998,2000 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /**************************************************************************** 32 * Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1995,1997 * 33 ****************************************************************************/ 34 35 /*************************************************************************** 36 * Module m_format * 37 * Set and get maximum numbers of rows and columns in menus * 38 ***************************************************************************/ 39 40 #include "menu.priv.h" 41 42 MODULE_ID("$From: m_format.c,v 1.10 2000/12/10 02:16:48 tom Exp $") 43 44 #define minimum(a,b) ((a)<(b) ? (a): (b)) 45 46 /*--------------------------------------------------------------------------- 47 | Facility : libnmenu 48 | Function : int set_menu_format(MENU *menu, int rows, int cols) 49 | 50 | Description : Sets the maximum number of rows and columns of items 51 | that may be displayed at one time on a menu. If the 52 | menu contains more items than can be displayed at 53 | once, the menu will be scrollable. 54 | 55 | Return Values : E_OK - success 56 | E_BAD_ARGUMENT - invalid values passed 57 | E_NOT_CONNECTED - there are no items connected 58 | E_POSTED - the menu is already posted 59 +--------------------------------------------------------------------------*/ 60 NCURSES_EXPORT(int) 61 set_menu_format (MENU *menu, int rows, int cols) 62 { 63 int total_rows, total_cols; 64 65 if (rows<0 || cols<0) 66 RETURN(E_BAD_ARGUMENT); 67 68 if (menu) 69 { 70 if ( menu->status & _POSTED ) 71 RETURN(E_POSTED); 72 73 if (!(menu->items)) 74 RETURN(E_NOT_CONNECTED); 75 76 if (rows==0) 77 rows = menu->frows; 78 if (cols==0) 79 cols = menu->fcols; 80 81 if (menu->pattern) 82 Reset_Pattern(menu); 83 84 menu->frows = rows; 85 menu->fcols = cols; 86 87 assert(rows>0 && cols>0); 88 total_rows = (menu->nitems - 1)/cols + 1; 89 total_cols = (menu->status & O_ROWMAJOR) ? 90 minimum(menu->nitems,cols) : 91 (menu->nitems-1)/total_rows + 1; 92 93 menu->rows = total_rows; 94 menu->cols = total_cols; 95 menu->arows = minimum(total_rows,rows); 96 menu->toprow = 0; 97 menu->curitem = *(menu->items); 98 assert(menu->curitem); 99 menu->status |= _LINK_NEEDED; 100 _nc_Calculate_Item_Length_and_Width(menu); 101 } 102 else 103 { 104 if (rows>0) _nc_Default_Menu.frows = rows; 105 if (cols>0) _nc_Default_Menu.fcols = cols; 106 } 107 108 RETURN(E_OK); 109 } 110 111 /*--------------------------------------------------------------------------- 112 | Facility : libnmenu 113 | Function : void menu_format(const MENU *menu, int *rows, int *cols) 114 | 115 | Description : Returns the maximum number of rows and columns that may 116 | be displayed at one time on menu. 117 | 118 | Return Values : - 119 +--------------------------------------------------------------------------*/ 120 NCURSES_EXPORT(void) 121 menu_format (const MENU *menu, int *rows, int *cols) 122 { 123 if (rows) 124 *rows = Normalize_Menu(menu)->frows; 125 if (cols) 126 *cols = Normalize_Menu(menu)->fcols; 127 } 128 129 /* m_format.c ends here */ 130