1 // SPDX-License-Identifier: GPL-2.0+
3  *  menubox.c -- implements the menu box
12  *  [ 1998-06-13 ]
14  *    *)  A bugfix for the Page-Down problem
16  *    *)  Formerly when I used Page Down and Page Up, the cursor would be set
22  *        lxdialog is re-invoked by the Menuconfig shell script, can't
27  *        one, but it would be nice if Menuconfig could make another "rm -f"
28  *        just to be sure.  Just try it out - you will recognise a difference!
30  *  [ 1998-06-14 ]
32  *    *)  Now lxdialog is crash-safe against broken "lxdialog.scrltmp" files
42  * would leave mis-synchronized lxdialog.scrltmp files lying around,
59 	strncpy(menu_item, item, menu_width - item_x);  in do_print_item()
60 	menu_item[menu_width - item_x] = '\0';  in do_print_item()
110 		waddstr(win, "(-)");  in print_arrows()
144 	int x = width / 2 - 28;  in print_buttons()
145 	int y = height - 2;  in print_buttons()
176 	int key = 0, button = 0, scroll = 0, choice = 0;  in dialog_menu()  local
184 		return -ERRDISPLAYTOOSMALL;  in dialog_menu()
186 	height -= 4;  in dialog_menu()
187 	width  -= 5;  in dialog_menu()
188 	menu_height = height - 10;  in dialog_menu()
193 	x = (getmaxx(stdscr) - width) / 2;  in dialog_menu()
194 	y = (getmaxy(stdscr) - height) / 2;  in dialog_menu()
204 	mvwaddch(dialog, height - 3, 0, ACS_LTEE);  in dialog_menu()
205 	for (i = 0; i < width - 2; i++)  in dialog_menu()
214 	print_autowrap(dialog, prompt, width - 2, 1, 3);  in dialog_menu()
216 	menu_width = width - 6;  in dialog_menu()
217 	box_y = height - menu_height - 5;  in dialog_menu()
218 	box_x = (width - menu_width) / 2 - 1;  in dialog_menu()
230 		item_x = (menu_width - 70) / 2;  in dialog_menu()
243 		choice = choice - scroll;  in dialog_menu()
248 		if (choice >= item_count() - max_choice / 2)  in dialog_menu()
249 			scroll = first_item = item_count() - max_choice;  in dialog_menu()
251 			scroll = first_item = choice - max_choice / 2;  in dialog_menu()
252 		choice = choice - scroll;  in dialog_menu()
296 		     key == '-' || key == '+' ||  in dialog_menu()
301 			if (key == KEY_UP || key == '-') {  in dialog_menu()
303 					/* Scroll menu down */  in dialog_menu()
304 					do_scroll(menu, &scroll, -1);  in dialog_menu()
308 					choice = MAX(choice - 1, 0);  in dialog_menu()
313 				if ((choice > max_choice - 3) &&  in dialog_menu()
318 					print_item(scroll+max_choice - 1,  in dialog_menu()
319 						   max_choice - 1, FALSE);  in dialog_menu()
321 					choice = MIN(choice + 1, max_choice - 1);  in dialog_menu()
327 						do_scroll(menu, &scroll, -1);  in dialog_menu()
331 							choice--;  in dialog_menu()
339 						print_item(scroll+max_choice-1,  in dialog_menu()
340 							   max_choice - 1, FALSE);  in dialog_menu()
364 			button = ((key == KEY_LEFT ? --button : ++button) < 0)  in dialog_menu()
365 			    ? 4 : (button > 4 ? 0 : button);  in dialog_menu()
367 			print_buttons(dialog, height, width, button);  in dialog_menu()
404 				return button;  in dialog_menu()