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Reto 5, mejorado
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| import curses | |
| from curses import wrapper | |
| MENU = [ | |
| "Listar usuarios", | |
| "Agregar usuario", | |
| "Ver informacion de usuarios", | |
| "Editar usuarios", | |
| "Eliminar usuarios", | |
| "Salir del programa", | |
| ] | |
| def paint_status(window, message, attr): | |
| """ Paints the status bar """ | |
| pass | |
| def initializer(stdscr): | |
| """ Initializes the main graphical configuration """ | |
| # Turn off cursor blinking | |
| curses.curs_set(0) | |
| # Color scheme for selected row | |
| curses.init_pair(1, curses.COLOR_BLACK, curses.COLOR_WHITE) | |
| def print_menu(stdscr, selected_row): | |
| """ Prints the menu in the center of the screen """ | |
| # Clear the screen | |
| stdscr.clear() | |
| # Getting the screen measurements | |
| h, w = stdscr.getmaxyx() | |
| for idx, opt in enumerate(MENU): | |
| # Calculating the position of the menu | |
| x = w//2 - len(opt)//2 | |
| y = h//2 - len(MENU)//2 + idx | |
| if idx == selected_row: | |
| # Highlighting the selected row | |
| stdscr.attron(curses.color_pair(1)) | |
| stdscr.addstr(y, x, opt) | |
| stdscr.attroff(curses.color_pair(1)) | |
| else: | |
| stdscr.addstr(y, x, opt) | |
| stdscr.refresh() | |
| def print_center(stdscr, text): | |
| """ Prints a text in the center of the screen """ | |
| stdscr.clear() | |
| # Getting the screen measurements | |
| h, w = stdscr.getmaxyx() | |
| # Calculating the position of the text | |
| x = w//2 - len(text)//2 | |
| y = h//2 | |
| stdscr.addstr(y, x, text) | |
| stdscr.refresh() | |
| def main(stdscr): | |
| # Initializing the graphical configuration | |
| initializer(stdscr) | |
| # Specify the current selected/default row | |
| current_row = 0 | |
| # Main loop | |
| while True: | |
| # Print the menu | |
| print_menu(stdscr, current_row) | |
| # Obtain a key from user | |
| key = stdscr.getch() | |
| if key == curses.KEY_UP and current_row > 0: | |
| current_row -= 1 | |
| elif key == curses.KEY_DOWN and current_row < len(MENU) - 1: | |
| current_row += 1 | |
| elif key == curses.KEY_ENTER or key in [10, 13]: | |
| print_center(stdscr, "'{}'".format(MENU[current_row].upper())) | |
| stdscr.getch() | |
| # If user chose last option, exit the program | |
| if current_row == len(MENU) - 1: | |
| break | |
| wrapper(main) |
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