image_manager.py 文件源码

def get(imageurl, user_callback=None):

        cached = get_cache_for(imageurl)
        if cached:
            return cached
        elif imageurl in ImageManager.loading.keys():
            # return None (the file is still loading, already made a request)
            # return string the base64 of the url (which is going to be cached)
            temp_cached = ImageManager.loading[imageurl]
            if temp_cached == 404:
                return to_base64('404.png')
            if temp_cached:
                cache(imageurl, temp_cached)
                del ImageManager.loading[imageurl]
            return temp_cached
        else:
            # load from internet
            ImageManager.loading[imageurl] = None
            callback = get_base64_saver(ImageManager.loading, imageurl)
            loader = ImageLoader(imageurl, callback)
            loader.start()
            sublime.set_timeout_async(lambda: loader.join(), TIMEOUT * 1000)