utils.py 文件源码

def screenshot_area():
    """
        Screenshot an area of the screen using gnome-screenshot
        used to QR scan
    """
    ink_flag = call(['which', 'gnome-screenshot'], stdout=PIPE, stderr=PIPE)
    if ink_flag == 0:
        file_name = path.join(GLib.get_tmp_dir(), NamedTemporaryFile().name)
        p = Popen(["gnome-screenshot", "-a", "-f", file_name],
                  stdout=PIPE, stderr=PIPE)
        output, error = p.communicate()
        if error:
            error = error.decode("utf-8").split("\n")
            logging.error("\n".join([e for e in error]))
        if not path.isfile(file_name):
            logging.debug("The screenshot was not token")
            return False
        return file_name
    else:
        logging.error(
            "Couldn't find gnome-screenshot, please install it first")
        return False