Function main

examples/pysdl2.py:106–416

Parses input, initializes everything and then runs the main loop of the program, which handles input and draws the scene.

()

def main():
    """
    Parses input, initializes everything and then runs the main loop of the
    program, which handles input and draws the scene.
    """
    parser = argparse.ArgumentParser(
        description='PySDL2 / cefpython example',
        add_help=True
    )
    parser.add_argument(
        '-v',
        '--verbose',
        help='Turn on debug info',
        dest='verbose',
        action='store_true'
    )
    parser.add_argument(
        '-r',
        '--renderer',
        help='Specify hardware or software rendering',
        default='hardware',
        dest='renderer',
        choices=['software', 'hardware']
    )
    args = parser.parse_args()
    logLevel = logging.INFO
    if args.verbose:
        logLevel = logging.DEBUG
    logging.basicConfig(
        format='[%(filename)s %(levelname)s]: %(message)s',
        level=logLevel
    )
    logging.info("Using PySDL2 %s" % sdl2.__version__)
    version = sdl2.SDL_version()
    sdl2.SDL_GetVersion(version)
    logging.info(
        "Using SDL2 %s.%s.%s" % (version.major, version.minor, version.patch)
    )
    # The following variables control the dimensions of the window
    # and browser display area
    width = 800
    height = 600
    # headerHeight is useful for leaving space for controls
    # at the top of the window (future implementation?)
    headerHeight = 0
    browserHeight = height - headerHeight
    browserWidth = width
    # Mouse wheel fudge to enhance scrolling
    scrollEnhance = 40
    # desired frame rate
    frameRate = 100
    # Initialise CEF for offscreen rendering
    sys.excepthook = cef.ExceptHook
    switches = {
        # Tweaking OSR performance by setting the same Chromium flags
        # as in upstream cefclient (Issue #240).
        "disable-surfaces": "",
        "disable-gpu": "",