public TweetImageFetchRequest(TweetImageInfo image, UIView view, bool placeholder)
{
var scale = UIScreen.MainScreen.Scale;
tweetImage = image;
targetContentMode = view.ContentMode;
targetDimensions = TIPImageUtils.TIPDimensionsFromView(view);
forcePlaceholder = placeholder;
if (forcePlaceholder)
{
imageUrl = new NSUrl("placeholder://placeholder.com/placeholder.jpg");
}
else
{
if (tweetImage.MediaUrl.StartsWith("https://pbs.twimg.com/media/", StringComparison.OrdinalIgnoreCase))
{
var variantName = DetermineVariant(tweetImage.OriginalDimensions, targetDimensions, targetContentMode);
imageUrl = new NSUrl($"{tweetImage.MediaUrlWithoutExtension}?format={tweetImage.Format}&name={variantName}");
}
else
{
imageUrl = new NSUrl(tweetImage.MediaUrl);
}
}
}
public bool FetchHelperShouldContinueLoadingAfterFetching(TIPImageViewFetchHelper helper, ITIPImageFetchResult previewImageResult)
{
if (previewImageResult.ImageIsTreatedAsPlaceholder)
{
return(true);
}
var request = helper.FetchRequest;
if (request.GetOptions().HasFlag(TIPImageFetchOptions.TreatAsPlaceholder))
{
// would be a downgrade, stop
return(false);
}
var originalDimensions = previewImageResult.ImageOriginalDimensions;
var viewDimensions = TIPImageUtils.TIPDimensionsFromView(helper.FetchImageView);
if (originalDimensions.Height >= viewDimensions.Height && originalDimensions.Width >= viewDimensions.Width)
{
return(false);
}
return(true);
}