gutils.py 文件源码

def create_image_cache(md5sum, gsql):
    poster = gsql.session.query(db.Poster).filter_by(md5sum=md5sum).first()
    if not poster:
        log.warn("poster not available: %s", md5sum)
        return False
    if not poster.data:
        log.warn("poster data not available: %s", md5sum)
        return False

    fn_big = os.path.join(gsql.data_dir, 'posters', md5sum + '.jpg')
    fn_medium = os.path.join(gsql.data_dir, 'posters', md5sum + '_m.jpg')
    fn_small = os.path.join(gsql.data_dir, 'posters', md5sum + '_s.jpg')

    if not os.path.isfile(fn_big):
        f = file(fn_big, 'wb')
        f.write(poster.data)
        f.close()

    image = gtk.Image()
    image.set_from_file(fn_big)

    if not os.path.isfile(fn_medium):
        pixbuf = image.get_pixbuf()
        pixbuf = pixbuf.scale_simple(100, 140, 'bilinear')
        pixbuf.save(fn_medium, 'jpeg', {'quality': '70'})

    if not os.path.isfile(fn_small):
        pixbuf = image.get_pixbuf()
        pixbuf = pixbuf.scale_simple(30, 40, 'bilinear')
        pixbuf.save(fn_small, 'jpeg', {'quality': '70'})

    return True