kconfig/nconf.gui.c
branch1.14
changeset 2864 31d397543600
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/kconfig/nconf.gui.c	Wed Feb 01 00:19:04 2012 +0100
     1.3 @@ -0,0 +1,617 @@
     1.4 +/*
     1.5 + * Copyright (C) 2008 Nir Tzachar <nir.tzachar@gmail.com?
     1.6 + * Released under the terms of the GNU GPL v2.0.
     1.7 + *
     1.8 + * Derived from menuconfig.
     1.9 + *
    1.10 + */
    1.11 +#include "nconf.h"
    1.12 +
    1.13 +/* a list of all the different widgets we use */
    1.14 +attributes_t attributes[ATTR_MAX+1] = {0};
    1.15 +
    1.16 +/* available colors:
    1.17 +   COLOR_BLACK   0
    1.18 +   COLOR_RED     1
    1.19 +   COLOR_GREEN   2
    1.20 +   COLOR_YELLOW  3
    1.21 +   COLOR_BLUE    4
    1.22 +   COLOR_MAGENTA 5
    1.23 +   COLOR_CYAN    6
    1.24 +   COLOR_WHITE   7
    1.25 +   */
    1.26 +static void set_normal_colors(void)
    1.27 +{
    1.28 +	init_pair(NORMAL, -1, -1);
    1.29 +	init_pair(MAIN_HEADING, COLOR_MAGENTA, -1);
    1.30 +
    1.31 +	/* FORE is for the selected item */
    1.32 +	init_pair(MAIN_MENU_FORE, -1, -1);
    1.33 +	/* BACK for all the rest */
    1.34 +	init_pair(MAIN_MENU_BACK, -1, -1);
    1.35 +	init_pair(MAIN_MENU_GREY, -1, -1);
    1.36 +	init_pair(MAIN_MENU_HEADING, COLOR_GREEN, -1);
    1.37 +	init_pair(MAIN_MENU_BOX, COLOR_YELLOW, -1);
    1.38 +
    1.39 +	init_pair(SCROLLWIN_TEXT, -1, -1);
    1.40 +	init_pair(SCROLLWIN_HEADING, COLOR_GREEN, -1);
    1.41 +	init_pair(SCROLLWIN_BOX, COLOR_YELLOW, -1);
    1.42 +
    1.43 +	init_pair(DIALOG_TEXT, -1, -1);
    1.44 +	init_pair(DIALOG_BOX, COLOR_YELLOW, -1);
    1.45 +	init_pair(DIALOG_MENU_BACK, COLOR_YELLOW, -1);
    1.46 +	init_pair(DIALOG_MENU_FORE, COLOR_RED, -1);
    1.47 +
    1.48 +	init_pair(INPUT_BOX, COLOR_YELLOW, -1);
    1.49 +	init_pair(INPUT_HEADING, COLOR_GREEN, -1);
    1.50 +	init_pair(INPUT_TEXT, -1, -1);
    1.51 +	init_pair(INPUT_FIELD, -1, -1);
    1.52 +
    1.53 +	init_pair(FUNCTION_HIGHLIGHT, -1, -1);
    1.54 +	init_pair(FUNCTION_TEXT, COLOR_BLUE, -1);
    1.55 +}
    1.56 +
    1.57 +/* available attributes:
    1.58 +   A_NORMAL        Normal display (no highlight)
    1.59 +   A_STANDOUT      Best highlighting mode of the terminal.
    1.60 +   A_UNDERLINE     Underlining
    1.61 +   A_REVERSE       Reverse video
    1.62 +   A_BLINK         Blinking
    1.63 +   A_DIM           Half bright
    1.64 +   A_BOLD          Extra bright or bold
    1.65 +   A_PROTECT       Protected mode
    1.66 +   A_INVIS         Invisible or blank mode
    1.67 +   A_ALTCHARSET    Alternate character set
    1.68 +   A_CHARTEXT      Bit-mask to extract a character
    1.69 +   COLOR_PAIR(n)   Color-pair number n
    1.70 +   */
    1.71 +static void normal_color_theme(void)
    1.72 +{
    1.73 +	/* automatically add color... */
    1.74 +#define mkattr(name, attr) do { \
    1.75 +attributes[name] = attr | COLOR_PAIR(name); } while (0)
    1.76 +	mkattr(NORMAL, NORMAL);
    1.77 +	mkattr(MAIN_HEADING, A_BOLD | A_UNDERLINE);
    1.78 +
    1.79 +	mkattr(MAIN_MENU_FORE, A_REVERSE);
    1.80 +	mkattr(MAIN_MENU_BACK, A_NORMAL);
    1.81 +	mkattr(MAIN_MENU_GREY, A_NORMAL);
    1.82 +	mkattr(MAIN_MENU_HEADING, A_BOLD);
    1.83 +	mkattr(MAIN_MENU_BOX, A_NORMAL);
    1.84 +
    1.85 +	mkattr(SCROLLWIN_TEXT, A_NORMAL);
    1.86 +	mkattr(SCROLLWIN_HEADING, A_BOLD);
    1.87 +	mkattr(SCROLLWIN_BOX, A_BOLD);
    1.88 +
    1.89 +	mkattr(DIALOG_TEXT, A_BOLD);
    1.90 +	mkattr(DIALOG_BOX, A_BOLD);
    1.91 +	mkattr(DIALOG_MENU_FORE, A_STANDOUT);
    1.92 +	mkattr(DIALOG_MENU_BACK, A_NORMAL);
    1.93 +
    1.94 +	mkattr(INPUT_BOX, A_NORMAL);
    1.95 +	mkattr(INPUT_HEADING, A_BOLD);
    1.96 +	mkattr(INPUT_TEXT, A_NORMAL);
    1.97 +	mkattr(INPUT_FIELD, A_UNDERLINE);
    1.98 +
    1.99 +	mkattr(FUNCTION_HIGHLIGHT, A_BOLD);
   1.100 +	mkattr(FUNCTION_TEXT, A_REVERSE);
   1.101 +}
   1.102 +
   1.103 +static void no_colors_theme(void)
   1.104 +{
   1.105 +	/* automatically add highlight, no color */
   1.106 +#define mkattrn(name, attr) { attributes[name] = attr; }
   1.107 +
   1.108 +	mkattrn(NORMAL, NORMAL);
   1.109 +	mkattrn(MAIN_HEADING, A_BOLD | A_UNDERLINE);
   1.110 +
   1.111 +	mkattrn(MAIN_MENU_FORE, A_STANDOUT);
   1.112 +	mkattrn(MAIN_MENU_BACK, A_NORMAL);
   1.113 +	mkattrn(MAIN_MENU_GREY, A_NORMAL);
   1.114 +	mkattrn(MAIN_MENU_HEADING, A_BOLD);
   1.115 +	mkattrn(MAIN_MENU_BOX, A_NORMAL);
   1.116 +
   1.117 +	mkattrn(SCROLLWIN_TEXT, A_NORMAL);
   1.118 +	mkattrn(SCROLLWIN_HEADING, A_BOLD);
   1.119 +	mkattrn(SCROLLWIN_BOX, A_BOLD);
   1.120 +
   1.121 +	mkattrn(DIALOG_TEXT, A_NORMAL);
   1.122 +	mkattrn(DIALOG_BOX, A_BOLD);
   1.123 +	mkattrn(DIALOG_MENU_FORE, A_STANDOUT);
   1.124 +	mkattrn(DIALOG_MENU_BACK, A_NORMAL);
   1.125 +
   1.126 +	mkattrn(INPUT_BOX, A_BOLD);
   1.127 +	mkattrn(INPUT_HEADING, A_BOLD);
   1.128 +	mkattrn(INPUT_TEXT, A_NORMAL);
   1.129 +	mkattrn(INPUT_FIELD, A_UNDERLINE);
   1.130 +
   1.131 +	mkattrn(FUNCTION_HIGHLIGHT, A_BOLD);
   1.132 +	mkattrn(FUNCTION_TEXT, A_REVERSE);
   1.133 +}
   1.134 +
   1.135 +void set_colors()
   1.136 +{
   1.137 +	start_color();
   1.138 +	use_default_colors();
   1.139 +	set_normal_colors();
   1.140 +	if (has_colors()) {
   1.141 +		normal_color_theme();
   1.142 +	} else {
   1.143 +		/* give defaults */
   1.144 +		no_colors_theme();
   1.145 +	}
   1.146 +}
   1.147 +
   1.148 +
   1.149 +/* this changes the windows attributes !!! */
   1.150 +void print_in_middle(WINDOW *win,
   1.151 +		int starty,
   1.152 +		int startx,
   1.153 +		int width,
   1.154 +		const char *string,
   1.155 +		chtype color)
   1.156 +{      int length, x, y;
   1.157 +	float temp;
   1.158 +
   1.159 +
   1.160 +	if (win == NULL)
   1.161 +		win = stdscr;
   1.162 +	getyx(win, y, x);
   1.163 +	if (startx != 0)
   1.164 +		x = startx;
   1.165 +	if (starty != 0)
   1.166 +		y = starty;
   1.167 +	if (width == 0)
   1.168 +		width = 80;
   1.169 +
   1.170 +	length = strlen(string);
   1.171 +	temp = (width - length) / 2;
   1.172 +	x = startx + (int)temp;
   1.173 +	(void) wattrset(win, color);
   1.174 +	mvwprintw(win, y, x, "%s", string);
   1.175 +	refresh();
   1.176 +}
   1.177 +
   1.178 +int get_line_no(const char *text)
   1.179 +{
   1.180 +	int i;
   1.181 +	int total = 1;
   1.182 +
   1.183 +	if (!text)
   1.184 +		return 0;
   1.185 +
   1.186 +	for (i = 0; text[i] != '\0'; i++)
   1.187 +		if (text[i] == '\n')
   1.188 +			total++;
   1.189 +	return total;
   1.190 +}
   1.191 +
   1.192 +const char *get_line(const char *text, int line_no)
   1.193 +{
   1.194 +	int i;
   1.195 +	int lines = 0;
   1.196 +
   1.197 +	if (!text)
   1.198 +		return 0;
   1.199 +
   1.200 +	for (i = 0; text[i] != '\0' && lines < line_no; i++)
   1.201 +		if (text[i] == '\n')
   1.202 +			lines++;
   1.203 +	return text+i;
   1.204 +}
   1.205 +
   1.206 +int get_line_length(const char *line)
   1.207 +{
   1.208 +	int res = 0;
   1.209 +	while (*line != '\0' && *line != '\n') {
   1.210 +		line++;
   1.211 +		res++;
   1.212 +	}
   1.213 +	return res;
   1.214 +}
   1.215 +
   1.216 +/* print all lines to the window. */
   1.217 +void fill_window(WINDOW *win, const char *text)
   1.218 +{
   1.219 +	int x, y;
   1.220 +	int total_lines = get_line_no(text);
   1.221 +	int i;
   1.222 +
   1.223 +	getmaxyx(win, y, x);
   1.224 +	/* do not go over end of line */
   1.225 +	total_lines = min(total_lines, y);
   1.226 +	for (i = 0; i < total_lines; i++) {
   1.227 +		char tmp[x+10];
   1.228 +		const char *line = get_line(text, i);
   1.229 +		int len = get_line_length(line);
   1.230 +		strncpy(tmp, line, min(len, x));
   1.231 +		tmp[len] = '\0';
   1.232 +		mvwprintw(win, i, 0, "%s", tmp);
   1.233 +	}
   1.234 +}
   1.235 +
   1.236 +/* get the message, and buttons.
   1.237 + * each button must be a char*
   1.238 + * return the selected button
   1.239 + *
   1.240 + * this dialog is used for 2 different things:
   1.241 + * 1) show a text box, no buttons.
   1.242 + * 2) show a dialog, with horizontal buttons
   1.243 + */
   1.244 +int btn_dialog(WINDOW *main_window, const char *msg, int btn_num, ...)
   1.245 +{
   1.246 +	va_list ap;
   1.247 +	char *btn;
   1.248 +	int btns_width = 0;
   1.249 +	int msg_lines = 0;
   1.250 +	int msg_width = 0;
   1.251 +	int total_width;
   1.252 +	int win_rows = 0;
   1.253 +	WINDOW *win;
   1.254 +	WINDOW *msg_win;
   1.255 +	WINDOW *menu_win;
   1.256 +	MENU *menu;
   1.257 +	ITEM *btns[btn_num+1];
   1.258 +	int i, x, y;
   1.259 +	int res = -1;
   1.260 +
   1.261 +
   1.262 +	va_start(ap, btn_num);
   1.263 +	for (i = 0; i < btn_num; i++) {
   1.264 +		btn = va_arg(ap, char *);
   1.265 +		btns[i] = new_item(btn, "");
   1.266 +		btns_width += strlen(btn)+1;
   1.267 +	}
   1.268 +	va_end(ap);
   1.269 +	btns[btn_num] = NULL;
   1.270 +
   1.271 +	/* find the widest line of msg: */
   1.272 +	msg_lines = get_line_no(msg);
   1.273 +	for (i = 0; i < msg_lines; i++) {
   1.274 +		const char *line = get_line(msg, i);
   1.275 +		int len = get_line_length(line);
   1.276 +		if (msg_width < len)
   1.277 +			msg_width = len;
   1.278 +	}
   1.279 +
   1.280 +	total_width = max(msg_width, btns_width);
   1.281 +	/* place dialog in middle of screen */
   1.282 +	y = (LINES-(msg_lines+4))/2;
   1.283 +	x = (COLS-(total_width+4))/2;
   1.284 +
   1.285 +
   1.286 +	/* create the windows */
   1.287 +	if (btn_num > 0)
   1.288 +		win_rows = msg_lines+4;
   1.289 +	else
   1.290 +		win_rows = msg_lines+2;
   1.291 +
   1.292 +	win = newwin(win_rows, total_width+4, y, x);
   1.293 +	keypad(win, TRUE);
   1.294 +	menu_win = derwin(win, 1, btns_width, win_rows-2,
   1.295 +			1+(total_width+2-btns_width)/2);
   1.296 +	menu = new_menu(btns);
   1.297 +	msg_win = derwin(win, win_rows-2, msg_width, 1,
   1.298 +			1+(total_width+2-msg_width)/2);
   1.299 +
   1.300 +	set_menu_fore(menu, attributes[DIALOG_MENU_FORE]);
   1.301 +	set_menu_back(menu, attributes[DIALOG_MENU_BACK]);
   1.302 +
   1.303 +	(void) wattrset(win, attributes[DIALOG_BOX]);
   1.304 +	box(win, 0, 0);
   1.305 +
   1.306 +	/* print message */
   1.307 +	(void) wattrset(msg_win, attributes[DIALOG_TEXT]);
   1.308 +	fill_window(msg_win, msg);
   1.309 +
   1.310 +	set_menu_win(menu, win);
   1.311 +	set_menu_sub(menu, menu_win);
   1.312 +	set_menu_format(menu, 1, btn_num);
   1.313 +	menu_opts_off(menu, O_SHOWDESC);
   1.314 +	menu_opts_off(menu, O_SHOWMATCH);
   1.315 +	menu_opts_on(menu, O_ONEVALUE);
   1.316 +	menu_opts_on(menu, O_NONCYCLIC);
   1.317 +	set_menu_mark(menu, "");
   1.318 +	post_menu(menu);
   1.319 +
   1.320 +
   1.321 +	touchwin(win);
   1.322 +	refresh_all_windows(main_window);
   1.323 +	while ((res = wgetch(win))) {
   1.324 +		switch (res) {
   1.325 +		case KEY_LEFT:
   1.326 +			menu_driver(menu, REQ_LEFT_ITEM);
   1.327 +			break;
   1.328 +		case KEY_RIGHT:
   1.329 +			menu_driver(menu, REQ_RIGHT_ITEM);
   1.330 +			break;
   1.331 +		case 10: /* ENTER */
   1.332 +		case 27: /* ESCAPE */
   1.333 +		case ' ':
   1.334 +		case KEY_F(F_BACK):
   1.335 +		case KEY_F(F_EXIT):
   1.336 +			break;
   1.337 +		}
   1.338 +		touchwin(win);
   1.339 +		refresh_all_windows(main_window);
   1.340 +
   1.341 +		if (res == 10 || res == ' ') {
   1.342 +			res = item_index(current_item(menu));
   1.343 +			break;
   1.344 +		} else if (res == 27 || res == KEY_F(F_BACK) ||
   1.345 +				res == KEY_F(F_EXIT)) {
   1.346 +			res = KEY_EXIT;
   1.347 +			break;
   1.348 +		}
   1.349 +	}
   1.350 +
   1.351 +	unpost_menu(menu);
   1.352 +	free_menu(menu);
   1.353 +	for (i = 0; i < btn_num; i++)
   1.354 +		free_item(btns[i]);
   1.355 +
   1.356 +	delwin(win);
   1.357 +	return res;
   1.358 +}
   1.359 +
   1.360 +int dialog_inputbox(WINDOW *main_window,
   1.361 +		const char *title, const char *prompt,
   1.362 +		const char *init, char *result, int result_len)
   1.363 +{
   1.364 +	int prompt_lines = 0;
   1.365 +	int prompt_width = 0;
   1.366 +	WINDOW *win;
   1.367 +	WINDOW *prompt_win;
   1.368 +	WINDOW *form_win;
   1.369 +	PANEL *panel;
   1.370 +	int i, x, y;
   1.371 +	int res = -1;
   1.372 +	int cursor_position = strlen(init);
   1.373 +
   1.374 +
   1.375 +	/* find the widest line of msg: */
   1.376 +	prompt_lines = get_line_no(prompt);
   1.377 +	for (i = 0; i < prompt_lines; i++) {
   1.378 +		const char *line = get_line(prompt, i);
   1.379 +		int len = get_line_length(line);
   1.380 +		prompt_width = max(prompt_width, len);
   1.381 +	}
   1.382 +
   1.383 +	if (title)
   1.384 +		prompt_width = max(prompt_width, strlen(title));
   1.385 +
   1.386 +	/* place dialog in middle of screen */
   1.387 +	y = (LINES-(prompt_lines+4))/2;
   1.388 +	x = (COLS-(prompt_width+4))/2;
   1.389 +
   1.390 +	strncpy(result, init, result_len);
   1.391 +
   1.392 +	/* create the windows */
   1.393 +	win = newwin(prompt_lines+6, prompt_width+7, y, x);
   1.394 +	prompt_win = derwin(win, prompt_lines+1, prompt_width, 2, 2);
   1.395 +	form_win = derwin(win, 1, prompt_width, prompt_lines+3, 2);
   1.396 +	keypad(form_win, TRUE);
   1.397 +
   1.398 +	(void) wattrset(form_win, attributes[INPUT_FIELD]);
   1.399 +
   1.400 +	(void) wattrset(win, attributes[INPUT_BOX]);
   1.401 +	box(win, 0, 0);
   1.402 +	(void) wattrset(win, attributes[INPUT_HEADING]);
   1.403 +	if (title)
   1.404 +		mvwprintw(win, 0, 3, "%s", title);
   1.405 +
   1.406 +	/* print message */
   1.407 +	(void) wattrset(prompt_win, attributes[INPUT_TEXT]);
   1.408 +	fill_window(prompt_win, prompt);
   1.409 +
   1.410 +	mvwprintw(form_win, 0, 0, "%*s", prompt_width, " ");
   1.411 +	mvwprintw(form_win, 0, 0, "%s", result);
   1.412 +
   1.413 +	/* create panels */
   1.414 +	panel = new_panel(win);
   1.415 +
   1.416 +	/* show the cursor */
   1.417 +	curs_set(1);
   1.418 +
   1.419 +	touchwin(win);
   1.420 +	refresh_all_windows(main_window);
   1.421 +	while ((res = wgetch(form_win))) {
   1.422 +		int len = strlen(result);
   1.423 +		switch (res) {
   1.424 +		case 10: /* ENTER */
   1.425 +		case 27: /* ESCAPE */
   1.426 +		case KEY_F(F_HELP):
   1.427 +		case KEY_F(F_EXIT):
   1.428 +		case KEY_F(F_BACK):
   1.429 +			break;
   1.430 +		case 127:
   1.431 +		case KEY_BACKSPACE:
   1.432 +			if (cursor_position > 0) {
   1.433 +				memmove(&result[cursor_position-1],
   1.434 +						&result[cursor_position],
   1.435 +						len-cursor_position+1);
   1.436 +				cursor_position--;
   1.437 +			}
   1.438 +			break;
   1.439 +		case KEY_DC:
   1.440 +			if (cursor_position >= 0 && cursor_position < len) {
   1.441 +				memmove(&result[cursor_position],
   1.442 +						&result[cursor_position+1],
   1.443 +						len-cursor_position+1);
   1.444 +			}
   1.445 +			break;
   1.446 +		case KEY_UP:
   1.447 +		case KEY_RIGHT:
   1.448 +			if (cursor_position < len &&
   1.449 +			    cursor_position < min(result_len, prompt_width))
   1.450 +				cursor_position++;
   1.451 +			break;
   1.452 +		case KEY_DOWN:
   1.453 +		case KEY_LEFT:
   1.454 +			if (cursor_position > 0)
   1.455 +				cursor_position--;
   1.456 +			break;
   1.457 +		default:
   1.458 +			if ((isgraph(res) || isspace(res)) &&
   1.459 +					len-2 < result_len) {
   1.460 +				/* insert the char at the proper position */
   1.461 +				memmove(&result[cursor_position+1],
   1.462 +						&result[cursor_position],
   1.463 +						len+1);
   1.464 +				result[cursor_position] = res;
   1.465 +				cursor_position++;
   1.466 +			} else {
   1.467 +				mvprintw(0, 0, "unknow key: %d\n", res);
   1.468 +			}
   1.469 +			break;
   1.470 +		}
   1.471 +		wmove(form_win, 0, 0);
   1.472 +		wclrtoeol(form_win);
   1.473 +		mvwprintw(form_win, 0, 0, "%*s", prompt_width, " ");
   1.474 +		mvwprintw(form_win, 0, 0, "%s", result);
   1.475 +		wmove(form_win, 0, cursor_position);
   1.476 +		touchwin(win);
   1.477 +		refresh_all_windows(main_window);
   1.478 +
   1.479 +		if (res == 10) {
   1.480 +			res = 0;
   1.481 +			break;
   1.482 +		} else if (res == 27 || res == KEY_F(F_BACK) ||
   1.483 +				res == KEY_F(F_EXIT)) {
   1.484 +			res = KEY_EXIT;
   1.485 +			break;
   1.486 +		} else if (res == KEY_F(F_HELP)) {
   1.487 +			res = 1;
   1.488 +			break;
   1.489 +		}
   1.490 +	}
   1.491 +
   1.492 +	/* hide the cursor */
   1.493 +	curs_set(0);
   1.494 +	del_panel(panel);
   1.495 +	delwin(prompt_win);
   1.496 +	delwin(form_win);
   1.497 +	delwin(win);
   1.498 +	return res;
   1.499 +}
   1.500 +
   1.501 +/* refresh all windows in the correct order */
   1.502 +void refresh_all_windows(WINDOW *main_window)
   1.503 +{
   1.504 +	update_panels();
   1.505 +	touchwin(main_window);
   1.506 +	refresh();
   1.507 +}
   1.508 +
   1.509 +/* layman's scrollable window... */
   1.510 +void show_scroll_win(WINDOW *main_window,
   1.511 +		const char *title,
   1.512 +		const char *text)
   1.513 +{
   1.514 +	int res;
   1.515 +	int total_lines = get_line_no(text);
   1.516 +	int x, y;
   1.517 +	int start_x = 0, start_y = 0;
   1.518 +	int text_lines = 0, text_cols = 0;
   1.519 +	int total_cols = 0;
   1.520 +	int win_cols = 0;
   1.521 +	int win_lines = 0;
   1.522 +	int i = 0;
   1.523 +	WINDOW *win;
   1.524 +	WINDOW *pad;
   1.525 +	PANEL *panel;
   1.526 +
   1.527 +	/* find the widest line of msg: */
   1.528 +	total_lines = get_line_no(text);
   1.529 +	for (i = 0; i < total_lines; i++) {
   1.530 +		const char *line = get_line(text, i);
   1.531 +		int len = get_line_length(line);
   1.532 +		total_cols = max(total_cols, len+2);
   1.533 +	}
   1.534 +
   1.535 +	/* create the pad */
   1.536 +	pad = newpad(total_lines+10, total_cols+10);
   1.537 +	(void) wattrset(pad, attributes[SCROLLWIN_TEXT]);
   1.538 +	fill_window(pad, text);
   1.539 +
   1.540 +	win_lines = min(total_lines+4, LINES-2);
   1.541 +	win_cols = min(total_cols+2, COLS-2);
   1.542 +	text_lines = max(win_lines-4, 0);
   1.543 +	text_cols = max(win_cols-2, 0);
   1.544 +
   1.545 +	/* place window in middle of screen */
   1.546 +	y = (LINES-win_lines)/2;
   1.547 +	x = (COLS-win_cols)/2;
   1.548 +
   1.549 +	win = newwin(win_lines, win_cols, y, x);
   1.550 +	keypad(win, TRUE);
   1.551 +	/* show the help in the help window, and show the help panel */
   1.552 +	(void) wattrset(win, attributes[SCROLLWIN_BOX]);
   1.553 +	box(win, 0, 0);
   1.554 +	(void) wattrset(win, attributes[SCROLLWIN_HEADING]);
   1.555 +	mvwprintw(win, 0, 3, " %s ", title);
   1.556 +	panel = new_panel(win);
   1.557 +
   1.558 +	/* handle scrolling */
   1.559 +	do {
   1.560 +
   1.561 +		copywin(pad, win, start_y, start_x, 2, 2, text_lines,
   1.562 +				text_cols, 0);
   1.563 +		print_in_middle(win,
   1.564 +				text_lines+2,
   1.565 +				0,
   1.566 +				text_cols,
   1.567 +				"<OK>",
   1.568 +				attributes[DIALOG_MENU_FORE]);
   1.569 +		wrefresh(win);
   1.570 +
   1.571 +		res = wgetch(win);
   1.572 +		switch (res) {
   1.573 +		case KEY_NPAGE:
   1.574 +		case ' ':
   1.575 +			start_y += text_lines-2;
   1.576 +			break;
   1.577 +		case KEY_PPAGE:
   1.578 +			start_y -= text_lines+2;
   1.579 +			break;
   1.580 +		case KEY_HOME:
   1.581 +			start_y = 0;
   1.582 +			break;
   1.583 +		case KEY_END:
   1.584 +			start_y = total_lines-text_lines;
   1.585 +			break;
   1.586 +		case KEY_DOWN:
   1.587 +		case 'j':
   1.588 +			start_y++;
   1.589 +			break;
   1.590 +		case KEY_UP:
   1.591 +		case 'k':
   1.592 +			start_y--;
   1.593 +			break;
   1.594 +		case KEY_LEFT:
   1.595 +		case 'h':
   1.596 +			start_x--;
   1.597 +			break;
   1.598 +		case KEY_RIGHT:
   1.599 +		case 'l':
   1.600 +			start_x++;
   1.601 +			break;
   1.602 +		}
   1.603 +		if (res == 10 || res == 27 || res == 'q'
   1.604 +		    || res == KEY_F(F_BACK) || res == KEY_F(F_EXIT)) {
   1.605 +			break;
   1.606 +		}
   1.607 +		if (start_y < 0)
   1.608 +			start_y = 0;
   1.609 +		if (start_y >= total_lines-text_lines)
   1.610 +			start_y = total_lines-text_lines;
   1.611 +		if (start_x < 0)
   1.612 +			start_x = 0;
   1.613 +		if (start_x >= total_cols-text_cols)
   1.614 +			start_x = total_cols-text_cols;
   1.615 +	} while (res);
   1.616 +
   1.617 +	del_panel(panel);
   1.618 +	delwin(win);
   1.619 +	refresh_all_windows(main_window);
   1.620 +}