exposurses

void selection(char *name);
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color);
int exposure(int iso);
int selection_counter;
double shutter(int exposure, int aperture);
double aperture(int exposure, int shutter);






int main() {
	int c;
	MENU **menu;
	WINDOW **win;
	int n_iso, i;
	int n_shutter, j;
	int n_aperture, k;
    int menu_counter;
	int menu_sel_last;
    menu_counter = 1;
    selection_counter = 0;

	/* Initialize curses */
	initscr();
	start_color();
	cbreak();
	noecho();
................................................................................
			case KEY_DOWN:
				menu_driver(*menu, REQ_DOWN_ITEM);
	    		break;
			case KEY_UP:
				menu_driver(*menu, REQ_UP_ITEM);
		    	break;
			case 10: { /* ENTER */
				/* Only increment selection counter if on different menu */







				if (selection_counter == 0) {
					menu_sel_last = menu_counter;
					selection_counter += 1;
				}
				if (menu_counter != menu_sel_last)
					selection_counter += 1;
                if (selection_counter == 2) { 
                    selection_counter = 0;
                    ITEM *cur;
                    void (*p)(char *);








                    cur = current_item(*menu);
                    p = item_userptr(cur);
                    p((char *)item_name(cur));
                    pos_menu_cursor(*menu);
                    break;





                }





			}





			break;
								 


		}
		wrefresh(*win);
	}	
	/* Unpost and free all the memory taken up */
	unpost_menu(iso_menu);
	unpost_menu(shutter_menu);
	unpost_menu(aperture_menu);
................................................................................
	wattron(win, color);
	mvwprintw(win, y, x, "%s", string);
	wattroff(win, color);
	refresh();
}

void selection(char *name) {
	/* Test setting item in another menu */
	set_top_row(shutter_menu, 3);
	/* This works, but plain refreshing doesn't work properly */
	/* But cheating and using menu_driver to go up/down does */
	menu_driver(shutter_menu, REQ_DOWN_ITEM);
	menu_driver(shutter_menu, REQ_UP_ITEM);
	wrefresh(shutter_win);






	/* Need to think about how to do the interaction
	 *
	 * Select ISO, but then just one or the other of aperture and shutter speed
	 * and on return know that adjusting other menu?A
	 *
	 * Perhaps a global variable/counter and display text saying "select first column"
	 * on enter increment counter, change to "select second column"
	 * then on next enter because of counter value, knows to run equations
	 * And cycle starts again. 
	 * Would do for a start
	 *
	 * Could even do entering numbers to select columns 1, 2, 3
	 *
	 * */
}

int exposure (int iso) {
	int ev100;
	ev100 = 15;
	return ev100 + (log (iso / 100) / log (2));
}

void selection(char *name);
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color);
int exposure(int iso);
int selection_counter;
double shutter(int exposure, int aperture);
double aperture(int exposure, int shutter);

char iso_sel[5] = "";
char shutter_sel[7] = "";
char aperture_sel[6] = "";
int menu_counter = 1;

int main() {
	int c;
	MENU **menu;
	WINDOW **win;
	int n_iso, i;
	int n_shutter, j;
	int n_aperture, k;

	int menu_sel_last;

    selection_counter = 0;

	/* Initialize curses */
	initscr();
	start_color();
	cbreak();
	noecho();
................................................................................
			case KEY_DOWN:
				menu_driver(*menu, REQ_DOWN_ITEM);
	    		break;
			case KEY_UP:
				menu_driver(*menu, REQ_UP_ITEM);
		    	break;
			case 10: { /* ENTER */
				ITEM *cur;
				void (*p)(char *);

				cur = current_item(*menu);
				p = item_userptr(cur);
				p((char *)item_name(cur));
				pos_menu_cursor(*menu);

				if (selection_counter == 0) {
					menu_sel_last = menu_counter;
					selection_counter += 1;
				}
				if (menu_counter != menu_sel_last)
					selection_counter += 1;
                if (selection_counter == 2) { 
					/* calculate the other menu */
					/* how to get missing menu? */
					if (strcmp("", iso_sel) == 0) {
						/* Test setting item in menu */
						set_top_row(iso_menu, 3);
						/* This works, but plain refreshing doesn't work properly */
						/* But cheating and using menu_driver to go up/down does */
						menu_driver(iso_menu, REQ_DOWN_ITEM);
						menu_driver(iso_menu, REQ_UP_ITEM);
						wrefresh(iso_win);
					}





					if (strcmp("", shutter_sel) == 0) {
						set_top_row(shutter_menu, 3);
						menu_driver(shutter_menu, REQ_DOWN_ITEM);
						menu_driver(shutter_menu, REQ_UP_ITEM);
						wrefresh(shutter_win);
					}
					if (strcmp("", aperture_sel) == 0) {
						set_top_row(aperture_menu, 3);
						menu_driver(aperture_menu, REQ_DOWN_ITEM);
						menu_driver(aperture_menu, REQ_UP_ITEM);
						wrefresh(aperture_win);
					}
					/* clear the selections for next time */
                    selection_counter = 0;
					strcpy(iso_sel, "");
					strcpy(shutter_sel, "");
					strcpy(aperture_sel, "");
					break;
				}
			break;
			}
		}
		wrefresh(*win);
	}	
	/* Unpost and free all the memory taken up */
	unpost_menu(iso_menu);
	unpost_menu(shutter_menu);
	unpost_menu(aperture_menu);
................................................................................
	wattron(win, color);
	mvwprintw(win, y, x, "%s", string);
	wattroff(win, color);
	refresh();
}

void selection(char *name) {
	switch(menu_counter) {
		case 1:
			strcpy(iso_sel, name);
			break;
		case 2:
			strcpy(shutter_sel, name);
			break;
		case 3:
			strcpy(aperture_sel, name);
			break;
		break;
	break;
	}














}

int exposure (int iso) {
	int ev100;
	ev100 = 15;
	return ev100 + (log (iso / 100) / log (2));
}