public static Task <UIImage> LoadViaNuke(ImageSource source, CancellationToken token, float scale)
{
try
{
switch (source)
{
case UriImageSource uriSource:
return(HandleUriSource(uriSource, token, scale));
case FileImageSource fileSource:
return(FormsHandler.DisableFileImageSourceHandling
? ImageSourceHandler.DefaultFileImageSourceHandler.LoadImageAsync(fileSource, token, scale)
: HandleFileSourceAsync(fileSource, token, scale));
default:
FormsHandler.Warn($"Unhandled image source type {source.GetType().Name}");
break;
}
}
catch (Exception exception)
{
FormsHandler.Warn($"Unexpected exception in Nuke image source handler: {exception}");
}
return(Task.FromResult(default(UIImage)));
}
public static async Task <UIImage> LoadViaNuke(ImageSource source, CancellationToken token)
{
try
{
switch (source)
{
case UriImageSource uriSource:
var urlString = uriSource.Uri.OriginalString;
if (String.IsNullOrEmpty(urlString))
{
return(null);
}
FormsHandler.Debug("Loading `{0}` as a web URL", urlString);
return(await LoadImageAsync(new NSUrl(urlString)));
case FileImageSource fileSource:
var fileName = fileSource.File;
if (string.IsNullOrEmpty(fileName))
{
return(null);
}
FormsHandler.Debug("Loading `{0}` as a file", fileName);
NSUrl fileUrl = null;
if (File.Exists(fileName))
{
fileUrl = NSUrl.FromFilename(fileName);;
}
else
{
string name = Path.GetFileNameWithoutExtension(fileName);
string extension = Path.GetExtension(fileName);
FormsHandler.Debug($"Loading as bundle resource name: {name} with type: {extension}");
fileUrl = NSBundle.MainBundle.GetUrlForResource(name, extension);
FormsHandler.Debug($"Bundle resource path: {fileUrl.AbsoluteString}");
}
return(await LoadImageAsync(fileUrl));
//case StreamImageSource streamImageSource:
// FormsHandler.Debug("Loading Image as a stream");
// return await LoadStreamAsync(streamImageSource);
default:
FormsHandler.Warn("Unhandled image source type {0}", source.GetType().Name);
break;
}
}
catch (Exception exception)
{
//Since developers can't catch this themselves, I think we should log it and silently fail
FormsHandler.Warn("Unexpected exception in FFImageLoading image source handler: {0}", exception);
}
return(default(UIImage));
}
private static Task <UIImage> LoadPlaceholderAsync()
{
switch (FormsHandler.PlaceholderImageSource)
{
case StreamImageSource streamImageSource:
FormsHandler.Warn($"loading placeholder from resource");
return(DefaultStreamImageSourceHandler.LoadImageAsync(streamImageSource));
;
case FontImageSource fontImageSource:
FormsHandler.Warn($"loading placeholder from Font");
return(DefaultFontImageSourcehandler.LoadImageAsync(fontImageSource));
default:
FormsHandler.Warn($"no valid placeholder found");
return(null);
}
}