private protected override bool TryOpenSourceAsync(
CancellationToken ct,
int?targetWidth,
int?targetHeight,
out Task <ImageData> asyncImage)
{
if (WebUri is {} uri)
{
var hasFileScheme = uri.IsAbsoluteUri && uri.Scheme == "file";
// Local files are assumed as coming from the remote server
var newUri = hasFileScheme switch
{
true => new Uri(uri.PathAndQuery.TrimStart('/'), UriKind.Relative),
_ => uri
};
asyncImage = AssetResolver.ResolveImageAsync(this, newUri, ScaleOverride);
return(true);
}
if (_stream is {} stream)
{
void OnProgress(ulong position, ulong?length)
{
if (position > 0 && length is { } actualLength)
{
var percent = (int)((position / (float)actualLength) * 100);
RaiseDownloadProgress(percent);
}
}
var streamWithContentType = stream.TrySetContentType(ContentType);
asyncImage = OpenFromStream(streamWithContentType, OnProgress, ct);
return(true);
}
asyncImage = default;
return(false);
}
private protected override bool TryOpenSourceAsync(int?targetWidth, int?targetHeight, out Task <ImageData> asyncImage)
{
var uri = WebUri;
if (uri != null)
{
var hasFileScheme = uri.IsAbsoluteUri && uri.Scheme == "file";
// Local files are assumed as coming from the remote server
var newUri = hasFileScheme switch
{
true => new Uri(uri.PathAndQuery.TrimStart('/'), UriKind.Relative),
_ => uri
};
asyncImage = AssetResolver.ResolveImageAsync(newUri, ScaleOverride);
return(true);
}
asyncImage = default;
return(false);
}
