1/* $OpenBSD: m_format.c,v 1.8 2023/10/17 09:52:10 nicm Exp $ */ 2 3/**************************************************************************** 4 * Copyright 2020,2021 Thomas E. Dickey * 5 * Copyright 1998-2010,2012 Free Software Foundation, Inc. * 6 * * 7 * Permission is hereby granted, free of charge, to any person obtaining a * 8 * copy of this software and associated documentation files (the * 9 * "Software"), to deal in the Software without restriction, including * 10 * without limitation the rights to use, copy, modify, merge, publish, * 11 * distribute, distribute with modifications, sublicense, and/or sell * 12 * copies of the Software, and to permit persons to whom the Software is * 13 * furnished to do so, subject to the following conditions: * 14 * * 15 * The above copyright notice and this permission notice shall be included * 16 * in all copies or substantial portions of the Software. * 17 * * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 21 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 24 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 25 * * 26 * Except as contained in this notice, the name(s) of the above copyright * 27 * holders shall not be used in advertising or otherwise to promote the * 28 * sale, use or other dealings in this Software without prior written * 29 * authorization. * 30 ****************************************************************************/ 31 32/**************************************************************************** 33 * Author: Juergen Pfeifer, 1995,1997 * 34 ****************************************************************************/ 35 36/*************************************************************************** 37* Module m_format * 38* Set and get maximum numbers of rows and columns in menus * 39***************************************************************************/ 40 41#include "menu.priv.h" 42 43MODULE_ID("$Id: m_format.c,v 1.8 2023/10/17 09:52:10 nicm Exp $") 44 45#define minimum(a,b) ((a)<(b) ? (a): (b)) 46 47/*--------------------------------------------------------------------------- 48| Facility : libnmenu 49| Function : int set_menu_format(MENU *menu, int rows, int cols) 50| 51| Description : Sets the maximum number of rows and columns of items 52| that may be displayed at one time on a menu. If the 53| menu contains more items than can be displayed at 54| once, the menu will be scrollable. 55| 56| Return Values : E_OK - success 57| E_BAD_ARGUMENT - invalid values passed 58| E_NOT_CONNECTED - there are no items connected 59| E_POSTED - the menu is already posted 60+--------------------------------------------------------------------------*/ 61MENU_EXPORT(int) 62set_menu_format(MENU *menu, int rows, int cols) 63{ 64 65 T((T_CALLED("set_menu_format(%p,%d,%d)"), (void *)menu, rows, cols)); 66 67 if (rows < 0 || cols < 0) 68 RETURN(E_BAD_ARGUMENT); 69 70 if (menu) 71 { 72 int total_rows, total_cols; 73 74 if (menu->status & _POSTED) 75 RETURN(E_POSTED); 76 77 if (!(menu->items)) 78 RETURN(E_NOT_CONNECTED); 79 80 if (rows == 0) 81 rows = menu->frows; 82 if (cols == 0) 83 cols = menu->fcols; 84 85 if (menu->pattern) 86 Reset_Pattern(menu); 87 88 menu->frows = (short)rows; 89 menu->fcols = (short)cols; 90 91 assert(rows > 0 && cols > 0); 92 total_rows = (menu->nitems - 1) / cols + 1; 93 total_cols = (menu->opt & O_ROWMAJOR) ? 94 minimum(menu->nitems, cols) : 95 (menu->nitems - 1) / total_rows + 1; 96 97 menu->rows = (short)total_rows; 98 menu->cols = (short)total_cols; 99 menu->arows = (short)minimum(total_rows, rows); 100 menu->toprow = 0; 101 menu->curitem = *(menu->items); 102 assert(menu->curitem); 103 SetStatus(menu, _LINK_NEEDED); 104 _nc_Calculate_Item_Length_and_Width(menu); 105 } 106 else 107 { 108 if (rows > 0) 109 _nc_Default_Menu.frows = (short)rows; 110 if (cols > 0) 111 _nc_Default_Menu.fcols = (short)cols; 112 } 113 114 RETURN(E_OK); 115} 116 117/*--------------------------------------------------------------------------- 118| Facility : libnmenu 119| Function : void menu_format(const MENU *menu, int *rows, int *cols) 120| 121| Description : Returns the maximum number of rows and columns that may 122| be displayed at one time on menu. 123| 124| Return Values : - 125+--------------------------------------------------------------------------*/ 126MENU_EXPORT(void) 127menu_format(const MENU *menu, int *rows, int *cols) 128{ 129 if (rows) 130 *rows = Normalize_Menu(menu)->frows; 131 if (cols) 132 *cols = Normalize_Menu(menu)->fcols; 133} 134 135/* m_format.c ends here */ 136