yann@2454: /*
yann@2454:  * Copyright (C) 2008 Nir Tzachar <nir.tzachar@gmail.com?
yann@2454:  * Released under the terms of the GNU GPL v2.0.
yann@2454:  *
yann@2454:  * Derived from menuconfig.
yann@2454:  *
yann@2454:  */
yann@2454: #include "nconf.h"
yann@2454: 
yann@2454: /* a list of all the different widgets we use */
yann@2454: attributes_t attributes[ATTR_MAX+1] = {0};
yann@2454: 
yann@2454: /* available colors:
yann@2454:    COLOR_BLACK   0
yann@2454:    COLOR_RED     1
yann@2454:    COLOR_GREEN   2
yann@2454:    COLOR_YELLOW  3
yann@2454:    COLOR_BLUE    4
yann@2454:    COLOR_MAGENTA 5
yann@2454:    COLOR_CYAN    6
yann@2454:    COLOR_WHITE   7
yann@2454:    */
yann@2454: static void set_normal_colors(void)
yann@2454: {
yann@2454: 	init_pair(NORMAL, -1, -1);
yann@2454: 	init_pair(MAIN_HEADING, COLOR_MAGENTA, -1);
yann@2454: 
yann@2454: 	/* FORE is for the selected item */
yann@2454: 	init_pair(MAIN_MENU_FORE, -1, -1);
yann@2454: 	/* BACK for all the rest */
yann@2454: 	init_pair(MAIN_MENU_BACK, -1, -1);
yann@2454: 	init_pair(MAIN_MENU_GREY, -1, -1);
yann@2454: 	init_pair(MAIN_MENU_HEADING, COLOR_GREEN, -1);
yann@2454: 	init_pair(MAIN_MENU_BOX, COLOR_YELLOW, -1);
yann@2454: 
yann@2454: 	init_pair(SCROLLWIN_TEXT, -1, -1);
yann@2454: 	init_pair(SCROLLWIN_HEADING, COLOR_GREEN, -1);
yann@2454: 	init_pair(SCROLLWIN_BOX, COLOR_YELLOW, -1);
yann@2454: 
yann@2454: 	init_pair(DIALOG_TEXT, -1, -1);
yann@2454: 	init_pair(DIALOG_BOX, COLOR_YELLOW, -1);
yann@2454: 	init_pair(DIALOG_MENU_BACK, COLOR_YELLOW, -1);
yann@2454: 	init_pair(DIALOG_MENU_FORE, COLOR_RED, -1);
yann@2454: 
yann@2454: 	init_pair(INPUT_BOX, COLOR_YELLOW, -1);
yann@2454: 	init_pair(INPUT_HEADING, COLOR_GREEN, -1);
yann@2454: 	init_pair(INPUT_TEXT, -1, -1);
yann@2454: 	init_pair(INPUT_FIELD, -1, -1);
yann@2454: 
yann@2454: 	init_pair(FUNCTION_HIGHLIGHT, -1, -1);
yann@2454: 	init_pair(FUNCTION_TEXT, COLOR_BLUE, -1);
yann@2454: }
yann@2454: 
yann@2454: /* available attributes:
yann@2454:    A_NORMAL        Normal display (no highlight)
yann@2454:    A_STANDOUT      Best highlighting mode of the terminal.
yann@2454:    A_UNDERLINE     Underlining
yann@2454:    A_REVERSE       Reverse video
yann@2454:    A_BLINK         Blinking
yann@2454:    A_DIM           Half bright
yann@2454:    A_BOLD          Extra bright or bold
yann@2454:    A_PROTECT       Protected mode
yann@2454:    A_INVIS         Invisible or blank mode
yann@2454:    A_ALTCHARSET    Alternate character set
yann@2454:    A_CHARTEXT      Bit-mask to extract a character
yann@2454:    COLOR_PAIR(n)   Color-pair number n
yann@2454:    */
yann@2454: static void normal_color_theme(void)
yann@2454: {
yann@2454: 	/* automatically add color... */
yann@2454: #define mkattr(name, attr) do { \
yann@2454: attributes[name] = attr | COLOR_PAIR(name); } while (0)
yann@2454: 	mkattr(NORMAL, NORMAL);
yann@2454: 	mkattr(MAIN_HEADING, A_BOLD | A_UNDERLINE);
yann@2454: 
yann@2454: 	mkattr(MAIN_MENU_FORE, A_REVERSE);
yann@2454: 	mkattr(MAIN_MENU_BACK, A_NORMAL);
yann@2454: 	mkattr(MAIN_MENU_GREY, A_NORMAL);
yann@2454: 	mkattr(MAIN_MENU_HEADING, A_BOLD);
yann@2454: 	mkattr(MAIN_MENU_BOX, A_NORMAL);
yann@2454: 
yann@2454: 	mkattr(SCROLLWIN_TEXT, A_NORMAL);
yann@2454: 	mkattr(SCROLLWIN_HEADING, A_BOLD);
yann@2454: 	mkattr(SCROLLWIN_BOX, A_BOLD);
yann@2454: 
yann@2454: 	mkattr(DIALOG_TEXT, A_BOLD);
yann@2454: 	mkattr(DIALOG_BOX, A_BOLD);
yann@2454: 	mkattr(DIALOG_MENU_FORE, A_STANDOUT);
yann@2454: 	mkattr(DIALOG_MENU_BACK, A_NORMAL);
yann@2454: 
yann@2454: 	mkattr(INPUT_BOX, A_NORMAL);
yann@2454: 	mkattr(INPUT_HEADING, A_BOLD);
yann@2454: 	mkattr(INPUT_TEXT, A_NORMAL);
yann@2454: 	mkattr(INPUT_FIELD, A_UNDERLINE);
yann@2454: 
yann@2454: 	mkattr(FUNCTION_HIGHLIGHT, A_BOLD);
yann@2454: 	mkattr(FUNCTION_TEXT, A_REVERSE);
yann@2454: }
yann@2454: 
yann@2454: static void no_colors_theme(void)
yann@2454: {
yann@2454: 	/* automatically add highlight, no color */
yann@2454: #define mkattrn(name, attr) { attributes[name] = attr; }
yann@2454: 
yann@2454: 	mkattrn(NORMAL, NORMAL);
yann@2454: 	mkattrn(MAIN_HEADING, A_BOLD | A_UNDERLINE);
yann@2454: 
yann@2454: 	mkattrn(MAIN_MENU_FORE, A_STANDOUT);
yann@2454: 	mkattrn(MAIN_MENU_BACK, A_NORMAL);
yann@2454: 	mkattrn(MAIN_MENU_GREY, A_NORMAL);
yann@2454: 	mkattrn(MAIN_MENU_HEADING, A_BOLD);
yann@2454: 	mkattrn(MAIN_MENU_BOX, A_NORMAL);
yann@2454: 
yann@2454: 	mkattrn(SCROLLWIN_TEXT, A_NORMAL);
yann@2454: 	mkattrn(SCROLLWIN_HEADING, A_BOLD);
yann@2454: 	mkattrn(SCROLLWIN_BOX, A_BOLD);
yann@2454: 
yann@2454: 	mkattrn(DIALOG_TEXT, A_NORMAL);
yann@2454: 	mkattrn(DIALOG_BOX, A_BOLD);
yann@2454: 	mkattrn(DIALOG_MENU_FORE, A_STANDOUT);
yann@2454: 	mkattrn(DIALOG_MENU_BACK, A_NORMAL);
yann@2454: 
yann@2454: 	mkattrn(INPUT_BOX, A_BOLD);
yann@2454: 	mkattrn(INPUT_HEADING, A_BOLD);
yann@2454: 	mkattrn(INPUT_TEXT, A_NORMAL);
yann@2454: 	mkattrn(INPUT_FIELD, A_UNDERLINE);
yann@2454: 
yann@2454: 	mkattrn(FUNCTION_HIGHLIGHT, A_BOLD);
yann@2454: 	mkattrn(FUNCTION_TEXT, A_REVERSE);
yann@2454: }
yann@2454: 
yann@2454: void set_colors()
yann@2454: {
yann@2454: 	start_color();
yann@2454: 	use_default_colors();
yann@2454: 	set_normal_colors();
yann@2454: 	if (has_colors()) {
yann@2454: 		normal_color_theme();
yann@2454: 	} else {
yann@2454: 		/* give defaults */
yann@2454: 		no_colors_theme();
yann@2454: 	}
yann@2454: }
yann@2454: 
yann@2454: 
yann@2454: /* this changes the windows attributes !!! */
yann@2454: void print_in_middle(WINDOW *win,
yann@2454: 		int starty,
yann@2454: 		int startx,
yann@2454: 		int width,
yann@2454: 		const char *string,
yann@2454: 		chtype color)
yann@2454: {      int length, x, y;
yann@2454: 	float temp;
yann@2454: 
yann@2454: 
yann@2454: 	if (win == NULL)
yann@2454: 		win = stdscr;
yann@2454: 	getyx(win, y, x);
yann@2454: 	if (startx != 0)
yann@2454: 		x = startx;
yann@2454: 	if (starty != 0)
yann@2454: 		y = starty;
yann@2454: 	if (width == 0)
yann@2454: 		width = 80;
yann@2454: 
yann@2454: 	length = strlen(string);
yann@2454: 	temp = (width - length) / 2;
yann@2454: 	x = startx + (int)temp;
yann@2454: 	(void) wattrset(win, color);
yann@2454: 	mvwprintw(win, y, x, "%s", string);
yann@2454: 	refresh();
yann@2454: }
yann@2454: 
yann@2454: int get_line_no(const char *text)
yann@2454: {
yann@2454: 	int i;
yann@2454: 	int total = 1;
yann@2454: 
yann@2454: 	if (!text)
yann@2454: 		return 0;
yann@2454: 
yann@2454: 	for (i = 0; text[i] != '\0'; i++)
yann@2454: 		if (text[i] == '\n')
yann@2454: 			total++;
yann@2454: 	return total;
yann@2454: }
yann@2454: 
yann@2454: const char *get_line(const char *text, int line_no)
yann@2454: {
yann@2454: 	int i;
yann@2454: 	int lines = 0;
yann@2454: 
yann@2454: 	if (!text)
yann@2454: 		return 0;
yann@2454: 
yann@2454: 	for (i = 0; text[i] != '\0' && lines < line_no; i++)
yann@2454: 		if (text[i] == '\n')
yann@2454: 			lines++;
yann@2454: 	return text+i;
yann@2454: }
yann@2454: 
yann@2454: int get_line_length(const char *line)
yann@2454: {
yann@2454: 	int res = 0;
yann@2454: 	while (*line != '\0' && *line != '\n') {
yann@2454: 		line++;
yann@2454: 		res++;
yann@2454: 	}
yann@2454: 	return res;
yann@2454: }
yann@2454: 
yann@2454: /* print all lines to the window. */
yann@2454: void fill_window(WINDOW *win, const char *text)
yann@2454: {
yann@2454: 	int x, y;
yann@2454: 	int total_lines = get_line_no(text);
yann@2454: 	int i;
yann@2454: 
yann@2454: 	getmaxyx(win, y, x);
yann@2454: 	/* do not go over end of line */
yann@2454: 	total_lines = min(total_lines, y);
yann@2454: 	for (i = 0; i < total_lines; i++) {
yann@2454: 		char tmp[x+10];
yann@2454: 		const char *line = get_line(text, i);
yann@2454: 		int len = get_line_length(line);
yann@2454: 		strncpy(tmp, line, min(len, x));
yann@2454: 		tmp[len] = '\0';
yann@2454: 		mvwprintw(win, i, 0, "%s", tmp);
yann@2454: 	}
yann@2454: }
yann@2454: 
yann@2454: /* get the message, and buttons.
yann@2454:  * each button must be a char*
yann@2454:  * return the selected button
yann@2454:  *
yann@2454:  * this dialog is used for 2 different things:
yann@2454:  * 1) show a text box, no buttons.
yann@2454:  * 2) show a dialog, with horizontal buttons
yann@2454:  */
yann@2454: int btn_dialog(WINDOW *main_window, const char *msg, int btn_num, ...)
yann@2454: {
yann@2454: 	va_list ap;
yann@2454: 	char *btn;
yann@2454: 	int btns_width = 0;
yann@2454: 	int msg_lines = 0;
yann@2454: 	int msg_width = 0;
yann@2454: 	int total_width;
yann@2454: 	int win_rows = 0;
yann@2454: 	WINDOW *win;
yann@2454: 	WINDOW *msg_win;
yann@2454: 	WINDOW *menu_win;
yann@2454: 	MENU *menu;
yann@2454: 	ITEM *btns[btn_num+1];
yann@2454: 	int i, x, y;
yann@2454: 	int res = -1;
yann@2454: 
yann@2454: 
yann@2454: 	va_start(ap, btn_num);
yann@2454: 	for (i = 0; i < btn_num; i++) {
yann@2454: 		btn = va_arg(ap, char *);
yann@2454: 		btns[i] = new_item(btn, "");
yann@2454: 		btns_width += strlen(btn)+1;
yann@2454: 	}
yann@2454: 	va_end(ap);
yann@2454: 	btns[btn_num] = NULL;
yann@2454: 
yann@2454: 	/* find the widest line of msg: */
yann@2454: 	msg_lines = get_line_no(msg);
yann@2454: 	for (i = 0; i < msg_lines; i++) {
yann@2454: 		const char *line = get_line(msg, i);
yann@2454: 		int len = get_line_length(line);
yann@2454: 		if (msg_width < len)
yann@2454: 			msg_width = len;
yann@2454: 	}
yann@2454: 
yann@2454: 	total_width = max(msg_width, btns_width);
yann@2454: 	/* place dialog in middle of screen */
yann@2454: 	y = (LINES-(msg_lines+4))/2;
yann@2454: 	x = (COLS-(total_width+4))/2;
yann@2454: 
yann@2454: 
yann@2454: 	/* create the windows */
yann@2454: 	if (btn_num > 0)
yann@2454: 		win_rows = msg_lines+4;
yann@2454: 	else
yann@2454: 		win_rows = msg_lines+2;
yann@2454: 
yann@2454: 	win = newwin(win_rows, total_width+4, y, x);
yann@2454: 	keypad(win, TRUE);
yann@2454: 	menu_win = derwin(win, 1, btns_width, win_rows-2,
yann@2454: 			1+(total_width+2-btns_width)/2);
yann@2454: 	menu = new_menu(btns);
yann@2454: 	msg_win = derwin(win, win_rows-2, msg_width, 1,
yann@2454: 			1+(total_width+2-msg_width)/2);
yann@2454: 
yann@2454: 	set_menu_fore(menu, attributes[DIALOG_MENU_FORE]);
yann@2454: 	set_menu_back(menu, attributes[DIALOG_MENU_BACK]);
yann@2454: 
yann@2454: 	(void) wattrset(win, attributes[DIALOG_BOX]);
yann@2454: 	box(win, 0, 0);
yann@2454: 
yann@2454: 	/* print message */
yann@2454: 	(void) wattrset(msg_win, attributes[DIALOG_TEXT]);
yann@2454: 	fill_window(msg_win, msg);
yann@2454: 
yann@2454: 	set_menu_win(menu, win);
yann@2454: 	set_menu_sub(menu, menu_win);
yann@2454: 	set_menu_format(menu, 1, btn_num);
yann@2454: 	menu_opts_off(menu, O_SHOWDESC);
yann@2454: 	menu_opts_off(menu, O_SHOWMATCH);
yann@2454: 	menu_opts_on(menu, O_ONEVALUE);
yann@2454: 	menu_opts_on(menu, O_NONCYCLIC);
yann@2454: 	set_menu_mark(menu, "");
yann@2454: 	post_menu(menu);
yann@2454: 
yann@2454: 
yann@2454: 	touchwin(win);
yann@2454: 	refresh_all_windows(main_window);
yann@2454: 	while ((res = wgetch(win))) {
yann@2454: 		switch (res) {
yann@2454: 		case KEY_LEFT:
yann@2454: 			menu_driver(menu, REQ_LEFT_ITEM);
yann@2454: 			break;
yann@2454: 		case KEY_RIGHT:
yann@2454: 			menu_driver(menu, REQ_RIGHT_ITEM);
yann@2454: 			break;
yann@2454: 		case 10: /* ENTER */
yann@2454: 		case 27: /* ESCAPE */
yann@2454: 		case ' ':
yann@2454: 		case KEY_F(F_BACK):
yann@2454: 		case KEY_F(F_EXIT):
yann@2454: 			break;
yann@2454: 		}
yann@2454: 		touchwin(win);
yann@2454: 		refresh_all_windows(main_window);
yann@2454: 
yann@2454: 		if (res == 10 || res == ' ') {
yann@2454: 			res = item_index(current_item(menu));
yann@2454: 			break;
yann@2454: 		} else if (res == 27 || res == KEY_F(F_BACK) ||
yann@2454: 				res == KEY_F(F_EXIT)) {
yann@2454: 			res = KEY_EXIT;
yann@2454: 			break;
yann@2454: 		}
yann@2454: 	}
yann@2454: 
yann@2454: 	unpost_menu(menu);
yann@2454: 	free_menu(menu);
yann@2454: 	for (i = 0; i < btn_num; i++)
yann@2454: 		free_item(btns[i]);
yann@2454: 
yann@2454: 	delwin(win);
yann@2454: 	return res;
yann@2454: }
yann@2454: 
yann@2454: int dialog_inputbox(WINDOW *main_window,
yann@2454: 		const char *title, const char *prompt,
yann@2454: 		const char *init, char *result, int result_len)
yann@2454: {
yann@2454: 	int prompt_lines = 0;
yann@2454: 	int prompt_width = 0;
yann@2454: 	WINDOW *win;
yann@2454: 	WINDOW *prompt_win;
yann@2454: 	WINDOW *form_win;
yann@2454: 	PANEL *panel;
yann@2454: 	int i, x, y;
yann@2454: 	int res = -1;
yann@2454: 	int cursor_position = strlen(init);
yann@2454: 
yann@2454: 
yann@2454: 	/* find the widest line of msg: */
yann@2454: 	prompt_lines = get_line_no(prompt);
yann@2454: 	for (i = 0; i < prompt_lines; i++) {
yann@2454: 		const char *line = get_line(prompt, i);
yann@2454: 		int len = get_line_length(line);
yann@2454: 		prompt_width = max(prompt_width, len);
yann@2454: 	}
yann@2454: 
yann@2454: 	if (title)
yann@2454: 		prompt_width = max(prompt_width, strlen(title));
yann@2454: 
yann@2454: 	/* place dialog in middle of screen */
yann@2454: 	y = (LINES-(prompt_lines+4))/2;
yann@2454: 	x = (COLS-(prompt_width+4))/2;
yann@2454: 
yann@2454: 	strncpy(result, init, result_len);
yann@2454: 
yann@2454: 	/* create the windows */
yann@2454: 	win = newwin(prompt_lines+6, prompt_width+7, y, x);
yann@2454: 	prompt_win = derwin(win, prompt_lines+1, prompt_width, 2, 2);
yann@2454: 	form_win = derwin(win, 1, prompt_width, prompt_lines+3, 2);
yann@2454: 	keypad(form_win, TRUE);
yann@2454: 
yann@2454: 	(void) wattrset(form_win, attributes[INPUT_FIELD]);
yann@2454: 
yann@2454: 	(void) wattrset(win, attributes[INPUT_BOX]);
yann@2454: 	box(win, 0, 0);
yann@2454: 	(void) wattrset(win, attributes[INPUT_HEADING]);
yann@2454: 	if (title)
yann@2454: 		mvwprintw(win, 0, 3, "%s", title);
yann@2454: 
yann@2454: 	/* print message */
yann@2454: 	(void) wattrset(prompt_win, attributes[INPUT_TEXT]);
yann@2454: 	fill_window(prompt_win, prompt);
yann@2454: 
yann@2454: 	mvwprintw(form_win, 0, 0, "%*s", prompt_width, " ");
yann@2454: 	mvwprintw(form_win, 0, 0, "%s", result);
yann@2454: 
yann@2454: 	/* create panels */
yann@2454: 	panel = new_panel(win);
yann@2454: 
yann@2454: 	/* show the cursor */
yann@2454: 	curs_set(1);
yann@2454: 
yann@2454: 	touchwin(win);
yann@2454: 	refresh_all_windows(main_window);
yann@2454: 	while ((res = wgetch(form_win))) {
yann@2454: 		int len = strlen(result);
yann@2454: 		switch (res) {
yann@2454: 		case 10: /* ENTER */
yann@2454: 		case 27: /* ESCAPE */
yann@2454: 		case KEY_F(F_HELP):
yann@2454: 		case KEY_F(F_EXIT):
yann@2454: 		case KEY_F(F_BACK):
yann@2454: 			break;
yann@2454: 		case 127:
yann@2454: 		case KEY_BACKSPACE:
yann@2454: 			if (cursor_position > 0) {
yann@2454: 				memmove(&result[cursor_position-1],
yann@2454: 						&result[cursor_position],
yann@2454: 						len-cursor_position+1);
yann@2454: 				cursor_position--;
yann@2454: 			}
yann@2454: 			break;
yann@2454: 		case KEY_DC:
yann@2454: 			if (cursor_position >= 0 && cursor_position < len) {
yann@2454: 				memmove(&result[cursor_position],
yann@2454: 						&result[cursor_position+1],
yann@2454: 						len-cursor_position+1);
yann@2454: 			}
yann@2454: 			break;
yann@2454: 		case KEY_UP:
yann@2454: 		case KEY_RIGHT:
yann@2454: 			if (cursor_position < len &&
yann@2454: 			    cursor_position < min(result_len, prompt_width))
yann@2454: 				cursor_position++;
yann@2454: 			break;
yann@2454: 		case KEY_DOWN:
yann@2454: 		case KEY_LEFT:
yann@2454: 			if (cursor_position > 0)
yann@2454: 				cursor_position--;
yann@2454: 			break;
yann@2454: 		default:
yann@2454: 			if ((isgraph(res) || isspace(res)) &&
yann@2454: 					len-2 < result_len) {
yann@2454: 				/* insert the char at the proper position */
yann@2454: 				memmove(&result[cursor_position+1],
yann@2454: 						&result[cursor_position],
yann@2454: 						len+1);
yann@2454: 				result[cursor_position] = res;
yann@2454: 				cursor_position++;
yann@2454: 			} else {
yann@2454: 				mvprintw(0, 0, "unknow key: %d\n", res);
yann@2454: 			}
yann@2454: 			break;
yann@2454: 		}
yann@2454: 		wmove(form_win, 0, 0);
yann@2454: 		wclrtoeol(form_win);
yann@2454: 		mvwprintw(form_win, 0, 0, "%*s", prompt_width, " ");
yann@2454: 		mvwprintw(form_win, 0, 0, "%s", result);
yann@2454: 		wmove(form_win, 0, cursor_position);
yann@2454: 		touchwin(win);
yann@2454: 		refresh_all_windows(main_window);
yann@2454: 
yann@2454: 		if (res == 10) {
yann@2454: 			res = 0;
yann@2454: 			break;
yann@2454: 		} else if (res == 27 || res == KEY_F(F_BACK) ||
yann@2454: 				res == KEY_F(F_EXIT)) {
yann@2454: 			res = KEY_EXIT;
yann@2454: 			break;
yann@2454: 		} else if (res == KEY_F(F_HELP)) {
yann@2454: 			res = 1;
yann@2454: 			break;
yann@2454: 		}
yann@2454: 	}
yann@2454: 
yann@2454: 	/* hide the cursor */
yann@2454: 	curs_set(0);
yann@2454: 	del_panel(panel);
yann@2454: 	delwin(prompt_win);
yann@2454: 	delwin(form_win);
yann@2454: 	delwin(win);
yann@2454: 	return res;
yann@2454: }
yann@2454: 
yann@2454: /* refresh all windows in the correct order */
yann@2454: void refresh_all_windows(WINDOW *main_window)
yann@2454: {
yann@2454: 	update_panels();
yann@2454: 	touchwin(main_window);
yann@2454: 	refresh();
yann@2454: }
yann@2454: 
yann@2454: /* layman's scrollable window... */
yann@2454: void show_scroll_win(WINDOW *main_window,
yann@2454: 		const char *title,
yann@2454: 		const char *text)
yann@2454: {
yann@2454: 	int res;
yann@2454: 	int total_lines = get_line_no(text);
yann@2454: 	int x, y;
yann@2454: 	int start_x = 0, start_y = 0;
yann@2454: 	int text_lines = 0, text_cols = 0;
yann@2454: 	int total_cols = 0;
yann@2454: 	int win_cols = 0;
yann@2454: 	int win_lines = 0;
yann@2454: 	int i = 0;
yann@2454: 	WINDOW *win;
yann@2454: 	WINDOW *pad;
yann@2454: 	PANEL *panel;
yann@2454: 
yann@2454: 	/* find the widest line of msg: */
yann@2454: 	total_lines = get_line_no(text);
yann@2454: 	for (i = 0; i < total_lines; i++) {
yann@2454: 		const char *line = get_line(text, i);
yann@2454: 		int len = get_line_length(line);
yann@2454: 		total_cols = max(total_cols, len+2);
yann@2454: 	}
yann@2454: 
yann@2454: 	/* create the pad */
yann@2454: 	pad = newpad(total_lines+10, total_cols+10);
yann@2454: 	(void) wattrset(pad, attributes[SCROLLWIN_TEXT]);
yann@2454: 	fill_window(pad, text);
yann@2454: 
yann@2454: 	win_lines = min(total_lines+4, LINES-2);
yann@2454: 	win_cols = min(total_cols+2, COLS-2);
yann@2454: 	text_lines = max(win_lines-4, 0);
yann@2454: 	text_cols = max(win_cols-2, 0);
yann@2454: 
yann@2454: 	/* place window in middle of screen */
yann@2454: 	y = (LINES-win_lines)/2;
yann@2454: 	x = (COLS-win_cols)/2;
yann@2454: 
yann@2454: 	win = newwin(win_lines, win_cols, y, x);
yann@2454: 	keypad(win, TRUE);
yann@2454: 	/* show the help in the help window, and show the help panel */
yann@2454: 	(void) wattrset(win, attributes[SCROLLWIN_BOX]);
yann@2454: 	box(win, 0, 0);
yann@2454: 	(void) wattrset(win, attributes[SCROLLWIN_HEADING]);
yann@2454: 	mvwprintw(win, 0, 3, " %s ", title);
yann@2454: 	panel = new_panel(win);
yann@2454: 
yann@2454: 	/* handle scrolling */
yann@2454: 	do {
yann@2454: 
yann@2454: 		copywin(pad, win, start_y, start_x, 2, 2, text_lines,
yann@2454: 				text_cols, 0);
yann@2454: 		print_in_middle(win,
yann@2454: 				text_lines+2,
yann@2454: 				0,
yann@2454: 				text_cols,
yann@2454: 				"<OK>",
yann@2454: 				attributes[DIALOG_MENU_FORE]);
yann@2454: 		wrefresh(win);
yann@2454: 
yann@2454: 		res = wgetch(win);
yann@2454: 		switch (res) {
yann@2454: 		case KEY_NPAGE:
yann@2454: 		case ' ':
yann@2454: 			start_y += text_lines-2;
yann@2454: 			break;
yann@2454: 		case KEY_PPAGE:
yann@2454: 			start_y -= text_lines+2;
yann@2454: 			break;
yann@2454: 		case KEY_HOME:
yann@2454: 			start_y = 0;
yann@2454: 			break;
yann@2454: 		case KEY_END:
yann@2454: 			start_y = total_lines-text_lines;
yann@2454: 			break;
yann@2454: 		case KEY_DOWN:
yann@2454: 		case 'j':
yann@2454: 			start_y++;
yann@2454: 			break;
yann@2454: 		case KEY_UP:
yann@2454: 		case 'k':
yann@2454: 			start_y--;
yann@2454: 			break;
yann@2454: 		case KEY_LEFT:
yann@2454: 		case 'h':
yann@2454: 			start_x--;
yann@2454: 			break;
yann@2454: 		case KEY_RIGHT:
yann@2454: 		case 'l':
yann@2454: 			start_x++;
yann@2454: 			break;
yann@2454: 		}
yann@2454: 		if (res == 10 || res == 27 || res == 'q'
yann@2454: 		    || res == KEY_F(F_BACK) || res == KEY_F(F_EXIT)) {
yann@2454: 			break;
yann@2454: 		}
yann@2454: 		if (start_y < 0)
yann@2454: 			start_y = 0;
yann@2454: 		if (start_y >= total_lines-text_lines)
yann@2454: 			start_y = total_lines-text_lines;
yann@2454: 		if (start_x < 0)
yann@2454: 			start_x = 0;
yann@2454: 		if (start_x >= total_cols-text_cols)
yann@2454: 			start_x = total_cols-text_cols;
yann@2454: 	} while (res);
yann@2454: 
yann@2454: 	del_panel(panel);
yann@2454: 	delwin(win);
yann@2454: 	refresh_all_windows(main_window);
yann@2454: }