canvas.py 文件源码

def _run_pygame_cb(self, main_fn):
        assert pygame.display.get_surface() is None, "PygameCanvas.run_pygame can only be called once."

        # Preinitialize Pygame with the X window ID.
        assert pygame.display.get_init() == False, "Pygame must not be initialized before calling PygameCanvas.run_pygame."
        os.environ['SDL_WINDOWID'] = str(self._socket.get_id())
        pygame.init()

        # Restore the default cursor.
        self._socket.props.window.set_cursor(None)

        # Initialize the Pygame window.
        r = self.get_allocation()
        pygame.display.set_mode((r.width, r.height), pygame.RESIZABLE)

        # Hook certain Pygame functions with GTK equivalents.
        self.translator.hook_pygame()

        # Run the Pygame main loop.
        main_fn()
        return False