exposurses

MENU *aperture_menu;
WINDOW *exposure_win;
WINDOW *iso_win;
WINDOW *shutter_win;
WINDOW *aperture_win;

void selection(char *name);
void add_menu(char **array, ITEM **items, MENU *men, WINDOW *win, int n, int xpos, char *title);
void remove_menu(ITEM **items, MENU *men, int n);
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color);


int exposure(int iso);
double shutter(int exposure, double aperture);
double aperture(int exposure, double shutter);
int nearest_match(double x, int menu);
double fraction_to_double(char *fraction);
/* No one will ever need more than 9 bytes! */
char exposure_sel[9] = "";
................................................................................

	/* Create items */
	/* Can't really avoid finding array sizes here */
	n_exposure = ARRAY_SIZE(exposure_array);
	n_iso = ARRAY_SIZE(iso_array);
	n_shutter = ARRAY_SIZE(shutter_array);
	n_aperture = ARRAY_SIZE(aperture_array);

	add_menu(exposure_array, exposure_items, exposure_menu, exposure_win, n_exposure, 4, "EV");
	add_menu(iso_array, iso_items, iso_menu, iso_win, n_iso, 45, "ISO");
	add_menu(shutter_array, shutter_items, shutter_menu, shutter_win, n_shutter, 86, "Shutter");
	add_menu(aperture_array, aperture_items, aperture_menu, aperture_win, n_aperture, 127, "Aperture");





	attron(COLOR_PAIR(2));
	mvprintw(LINES - 2, 0, "Select EV");
	/*mvprintw(LINES - 2, 0, "Select ISO and then one of Shutter/Aperture to calculate other of Shutter/Aperture");*/
	mvprintw(LINES - 1, 0, "Arrow keys to navigate, Enter to select, Q to exit");
	attroff(COLOR_PAIR(2));
	refresh();
................................................................................
	remove_menu(exposure_items, exposure_menu, n_exposure);
	remove_menu(iso_items, iso_menu, n_iso);
	remove_menu(shutter_items, shutter_menu, n_shutter);
	remove_menu(aperture_items, aperture_menu, n_aperture);
	endwin();
}

void add_menu(char **array, ITEM **items, MENU *men, WINDOW *win, int n, int xpos, char *title) {
	int i;


	items = (ITEM **)calloc(n, sizeof(ITEM *));
	for(i = 0; i<n; ++i) {
		items[i] = new_item(array[i], array[i]);
		set_item_userptr(items[i], selection);
	}
	men = new_menu((ITEM **)items);









	win = newwin(10, 40, 4, xpos);
	keypad(win, TRUE);
	set_menu_win(men, win);
	set_menu_sub(men, derwin(win, 6, 38, 3, 1));
	set_menu_format(men, 5, 1);
	set_menu_mark(men, " * ");

	box(win, 0, 0);
	print_in_middle(win, 1, 0, 40, title, COLOR_PAIR(1));
	mvwaddch(win, 2, 0, ACS_LTEE);
	mvwhline(win, 2, 1, ACS_HLINE, 38);
	mvwaddch(win, 2, 39, ACS_RTEE);
	post_menu(men);
	wrefresh(win);

}

void remove_menu(ITEM **items, MENU *men, int n) {
	int i;

	unpost_menu(men);
	free_menu(men);

MENU *aperture_menu;
WINDOW *exposure_win;
WINDOW *iso_win;
WINDOW *shutter_win;
WINDOW *aperture_win;

void selection(char *name);

void remove_menu(ITEM **items, MENU *men, int n);
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color);
MENU *add_menu(char **array, ITEM **items, int n);
WINDOW *add_window(MENU *men, int xpos, char *title);
int exposure(int iso);
double shutter(int exposure, double aperture);
double aperture(int exposure, double shutter);
int nearest_match(double x, int menu);
double fraction_to_double(char *fraction);
/* No one will ever need more than 9 bytes! */
char exposure_sel[9] = "";
................................................................................

	/* Create items */
	/* Can't really avoid finding array sizes here */
	n_exposure = ARRAY_SIZE(exposure_array);
	n_iso = ARRAY_SIZE(iso_array);
	n_shutter = ARRAY_SIZE(shutter_array);
	n_aperture = ARRAY_SIZE(aperture_array);
	/* http://stackoverflow.com/a/2620158/208793 */
	exposure_menu = add_menu(exposure_array, exposure_items, n_exposure);
	iso_menu = add_menu(iso_array, iso_items, n_iso);
	shutter_menu = add_menu(shutter_array, shutter_items, n_shutter);
	aperture_menu = add_menu(aperture_array, aperture_items, n_aperture);
	exposure_win = add_window(exposure_menu, 4, "EV");
	iso_win = add_window(iso_menu, 45, "ISO");
	shutter_win = add_window(shutter_menu, 86, "Shutter");
	aperture_win = add_window(aperture_menu, 127, "Aperture");

	attron(COLOR_PAIR(2));
	mvprintw(LINES - 2, 0, "Select EV");
	/*mvprintw(LINES - 2, 0, "Select ISO and then one of Shutter/Aperture to calculate other of Shutter/Aperture");*/
	mvprintw(LINES - 1, 0, "Arrow keys to navigate, Enter to select, Q to exit");
	attroff(COLOR_PAIR(2));
	refresh();
................................................................................
	remove_menu(exposure_items, exposure_menu, n_exposure);
	remove_menu(iso_items, iso_menu, n_iso);
	remove_menu(shutter_items, shutter_menu, n_shutter);
	remove_menu(aperture_items, aperture_menu, n_aperture);
	endwin();
}

MENU *add_menu(char **array, ITEM **items, int n) {
	int i;
	MENU *local_menu;

	items = (ITEM **)calloc(n, sizeof(ITEM *));
	for(i = 0; i<n; ++i) {
		items[i] = new_item(array[i], array[i]);
		set_item_userptr(items[i], selection);
	}
	local_menu = new_menu((ITEM **)items);
	set_menu_format(local_menu, 5, 1);
	set_menu_mark(local_menu, " * ");
	post_menu(local_menu);
	return local_menu;
}

WINDOW *add_window(MENU *men, int xpos, char *title) {
	WINDOW *local_win;

	local_win = newwin(10, 40, 4, xpos);
	keypad(local_win, TRUE);
	set_menu_win(*men, local_win);



	set_menu_sub(*men, derwin(local_win, 6, 38, 3, 1));
	box(local_win, 0, 0);
	print_in_middle(local_win, 1, 0, 40, title, COLOR_PAIR(1));
	mvwaddch(local_win, 2, 0, ACS_LTEE);
	mvwhline(local_win, 2, 1, ACS_HLINE, 38);
	mvwaddch(local_win, 2, 39, ACS_RTEE);

	wrefresh(local_win);
	return local_win;
}

void remove_menu(ITEM **items, MENU *men, int n) {
	int i;

	unpost_menu(men);
	free_menu(men);