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* menubox.c -- implements the menu box
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* ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
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* MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcapw@cfw.com)
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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* Changes by Clifford Wolf (god@clifford.at)
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* *) A bugfix for the Page-Down problem
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* *) Formerly when I used Page Down and Page Up, the cursor would be set
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* to the first position in the menu box. Now lxdialog is a bit
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* smarter and works more like other menu systems (just have a look at
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* *) Formerly if I selected something my scrolling would be broken because
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* lxdialog is re-invoked by the Menuconfig shell script, can't
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* remember the last scrolling position, and just sets it so that the
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* cursor is at the bottom of the box. Now it writes the temporary file
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* lxdialog.scrltmp which contains this information. The file is
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* deleted by lxdialog if the user leaves a submenu or enters a new
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* one, but it would be nice if Menuconfig could make another "rm -f"
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* just to be sure. Just try it out - you will recognise a difference!
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* *) Now lxdialog is crash-safe against broken "lxdialog.scrltmp" files
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* and menus change their size on the fly.
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* *) If for some reason the last scrolling position is not saved by
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* lxdialog, it sets the scrolling so that the selected item is in the
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* middle of the menu box, not at the bottom.
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* 02 January 1999, Michael Elizabeth Chastain (mec@shout.net)
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* Reset 'scroll' to 0 if the value from lxdialog.scrltmp is bogus.
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* This fixes a bug in Menuconfig where using ' ' to descend into menus
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* would leave mis-synchronized lxdialog.scrltmp files lying around,
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* fscanf would read in 'scroll', and eventually that value would get used.
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* @file conf/mconf_menubox.c
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#include "mconf_dialog.h"
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static int menu_width, item_x;
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print_item (WINDOW * win, const char *item, int choice, int selected, int hotkey)
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char menu_item[menu_width+1];
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strncpy(menu_item, item, menu_width);
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menu_item[menu_width] = 0;
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j = first_alpha(menu_item, "YyNnMm");
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/* Clear 'residue' of last item */
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wattrset (win, menubox_attr);
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wmove (win, choice, 0);
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for (i = 0; i < menu_width; i++)
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wattrset (win, selected ? item_selected_attr : item_attr);
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mvwaddstr (win, choice, item_x, menu_item);
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wattrset (win, selected ? tag_key_selected_attr : tag_key_attr);
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mvwaddch(win, choice, item_x+j, menu_item[j]);
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wmove (win, choice, item_x+1);
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* Print the scroll indicators.
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print_arrows (WINDOW * win, int item_no, int scroll,
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int y, int x, int height)
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getyx(win, cur_y, cur_x);
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wattrset (win, uarrow_attr);
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waddch (win, ACS_UARROW);
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waddstr (win, "(-)");
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wattrset (win, menubox_attr);
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waddch (win, ACS_HLINE);
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waddch (win, ACS_HLINE);
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waddch (win, ACS_HLINE);
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waddch (win, ACS_HLINE);
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if ((height < item_no) && (scroll + height < item_no)) {
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wattrset (win, darrow_attr);
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waddch (win, ACS_DARROW);
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waddstr (win, "(+)");
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wattrset (win, menubox_border_attr);
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waddch (win, ACS_HLINE);
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waddch (win, ACS_HLINE);
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waddch (win, ACS_HLINE);
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waddch (win, ACS_HLINE);
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wmove(win, cur_y, cur_x);
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* Display the termination buttons.
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print_buttons (WINDOW *win, int height, int width, int selected)
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int x = width / 2 - 16;
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print_button (win, "Select", y, x, selected == 0);
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print_button (win, " Exit ", y, x + 12, selected == 1);
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print_button (win, " Help ", y, x + 24, selected == 2);
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wmove(win, y, x+1+12*selected);
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* Display a menu for choosing among a number of options
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dialog_menu (const char *title, const char *prompt, int height, int width,
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int menu_height, const char choice_type, const void *choice_ptr,
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int item_no, struct dialog_list_item ** items)
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int i, j, x, y, box_x, box_y;
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int key = 0, button = 0, scroll_i = 0, choice = 0, first_item = 0, max_choice;
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WINDOW *dialog, *menu;
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max_choice = GNUNET_MIN (menu_height, item_no);
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/* center dialog box on screen */
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x = (COLS - width) / 2;
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y = (LINES - height) / 2;
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draw_shadow (stdscr, y, x, height, width);
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dialog = newwin (height, width, y, x);
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keypad (dialog, TRUE);
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draw_box (dialog, 0, 0, height, width, dialog_attr, border_attr);
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wattrset (dialog, border_attr);
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mvwaddch (dialog, height - 3, 0, ACS_LTEE);
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for (i = 0; i < width - 2; i++)
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waddch (dialog, ACS_HLINE);
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wattrset (dialog, dialog_attr);
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wbkgdset (dialog, dialog_attr & A_COLOR);
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waddch (dialog, ACS_RTEE);
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if (title != NULL && (int) strlen(title) >= width-2 ) {
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/* truncate long title -- mec */
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char * title2 = malloc(width-2+1);
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memcpy( title2, title, width-2 );
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title2[width-2] = '\0';
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wattrset (dialog, title_attr);
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mvwaddch (dialog, 0, (width - strlen(title))/2 - 1, ' ');
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waddstr (dialog, (char *)title);
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waddch (dialog, ' ');
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wattrset (dialog, dialog_attr);
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print_autowrap (dialog, prompt, width - 2, 1, 3);
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menu_width = width - 6;
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box_y = height - menu_height - 5;
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box_x = (width - menu_width) / 2 - 1;
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/* create new window for the menu */
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menu = subwin (dialog, menu_height, menu_width,
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y + box_y + 1, x + box_x + 1);
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/* draw a box around the menu items */
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draw_box (dialog, box_y, box_x, menu_height + 2, menu_width + 2,
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menubox_border_attr, menubox_attr);
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* Find length of longest item in order to center menu.
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* Set 'choice' to default item.
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for (i = 0; i < item_no; i++) {
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item_x = GNUNET_MAX (item_x, GNUNET_MIN(menu_width, (int) strlen (items[i]->name) + 2));
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if (choice_type == items[i]->type && choice_ptr == items[i]->data)
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item_x = (menu_width - item_x) / 2;
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/* get the scroll info from the temp file */
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if ( (f=FOPEN("/tmp/lxdialog.scrltmp","r")) != NULL ) {
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if ( (fscanf(f,"%d\n",&scroll_i) == 1) && (scroll_i <= choice) &&
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(scroll_i+max_choice > choice) && (scroll_i >= 0) &&
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(scroll_i+max_choice <= item_no) ) {
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first_item = scroll_i;
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choice = choice - scroll_i;
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REMOVE("/tmp/lxdialog.scrltmp");
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if ( (choice >= max_choice) || (f==NULL && choice >= max_choice/2) ) {
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if (choice >= item_no-max_choice/2)
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scroll_i = first_item = item_no-max_choice;
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scroll_i = first_item = choice - max_choice/2;
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choice = choice - scroll_i;
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for (i=0; i < max_choice; i++) {
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print_item (menu, items[first_item + i]->name, i, i == choice,
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(items[first_item + i]->type != ':'));
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print_arrows(dialog, item_no, scroll_i,
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box_y, box_x+item_x+1, menu_height);
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print_buttons (dialog, height, width, 0);
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wmove (menu, choice, item_x+1);
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if (key < 256 && isalpha(key)) key = tolower(key);
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if (strchr("ynm", key))
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for (i = choice+1; i < max_choice; i++) {
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j = first_alpha(items[scroll_i+i]->name, "YyNnMm");
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if (key == tolower(items[scroll_i+i]->name[j]))
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for (i = 0; i < max_choice; i++) {
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j = first_alpha(items[scroll_i+i]->name, "YyNnMm");
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if (key == tolower(items[scroll_i+i]->name[j]))
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if (i < max_choice ||
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key == KEY_UP || key == KEY_DOWN ||
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key == '-' || key == '+' ||
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key == KEY_PPAGE || key == KEY_NPAGE) {
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print_item (menu, items[scroll_i+choice]->name, choice, FALSE,
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(items[scroll_i+choice]->type != ':'));
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if (key == KEY_UP || key == '-') {
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if (choice < 2 && scroll_i) {
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/* Scroll menu down */
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scrollok (menu, TRUE);
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scrollok (menu, FALSE);
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print_item (menu, items[scroll_i]->name, 0, FALSE,
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(items[scroll_i]->type != ':'));
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choice = GNUNET_MAX(choice - 1, 0);
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} else if (key == KEY_DOWN || key == '+') {
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print_item (menu, items[scroll_i+choice]->name, choice, FALSE,
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(items[scroll_i+choice]->type != ':'));
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if ((choice > max_choice-3) &&
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(scroll_i + max_choice < item_no)
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scrollok (menu, TRUE);
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scrollok (menu, FALSE);
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print_item (menu, items[scroll_i + max_choice - 1]->name,
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(items[scroll_i + max_choice - 1]->type != ':'));
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choice = GNUNET_MIN(choice+1, max_choice-1);
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} else if (key == KEY_PPAGE) {
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scrollok (menu, TRUE);
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for (i=0; (i < max_choice); i++) {
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print_item (menu, items[scroll_i]->name, 0, FALSE,
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(items[scroll_i]->type != ':'));
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scrollok (menu, FALSE);
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} else if (key == KEY_NPAGE) {
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for (i=0; (i < max_choice); i++) {
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if (scroll_i+max_choice < item_no) {
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scrollok (menu, TRUE);
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scrollok (menu, FALSE);
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print_item (menu, items[scroll_i + max_choice - 1]->name,
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(items[scroll_i + max_choice - 1]->type != ':'));
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if (choice+1 < max_choice)
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print_item (menu, items[scroll_i + choice]->name, choice, TRUE,
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(items[scroll_i + choice]->type != ':'));
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print_arrows(dialog, item_no, scroll_i,
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box_y, box_x+item_x+1, menu_height);
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wnoutrefresh (dialog);
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continue; /* wait for another key press */
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button = ((key == KEY_LEFT ? --button : ++button) < 0)
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? 2 : (button > 2 ? 0 : button);
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print_buttons(dialog, height, width, button);
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/* save scroll info */
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if ( (f=FOPEN("/tmp/lxdialog.scrltmp","w")) != NULL ) {
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fprintf(f,"%d\n",scroll_i);
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items[scroll_i + choice]->selected = 1;
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items[scroll_i + choice]->selected = 1;
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REMOVE("/tmp/lxdialog.scrltmp");
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REMOVE("/tmp/lxdialog.scrltmp");
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return -1; /* ESC pressed */
added
removed
src/conf/mconf_menubox.c
