private void SavePhotoAsync(Action <string> callback = null)
{
TLFileLocation location = null;
var profilePhoto = CurrentItem as TLUserProfilePhoto;
if (profilePhoto != null)
{
location = profilePhoto.PhotoBig as TLFileLocation;
}
var photo = CurrentItem as TLPhoto;
if (photo != null)
{
TLPhotoSize size = null;
var sizes = photo.Sizes.OfType <TLPhotoSize>();
const double width = 640.0;
foreach (var photoSize in sizes)
{
if (size == null ||
Math.Abs(width - size.W.Value) > Math.Abs(width - photoSize.W.Value))
{
size = photoSize;
}
}
if (size == null)
{
return;
}
location = size.Location as TLFileLocation;
}
var chatPhoto = CurrentItem as TLChatPhoto;
if (chatPhoto != null)
{
location = chatPhoto.PhotoBig as TLFileLocation;
}
if (location == null)
{
return;
}
var fileName = String.Format("{0}_{1}_{2}.jpg",
location.VolumeId,
location.LocalId,
location.Secret);
Execute.BeginOnThreadPool(() => ImageViewerViewModel.SavePhoto(fileName, callback));
}
private static void SavePhotoAsync(TLDecryptedMessageMediaPhoto mediaPhoto, Action <string> callback = null)
{
var location = mediaPhoto.Photo as TLEncryptedFile;
if (location == null)
{
return;
}
var fileName = String.Format("{0}_{1}_{2}.jpg",
location.Id,
location.DCId,
location.AccessHash);
Execute.BeginOnThreadPool(() => ImageViewerViewModel.SavePhoto(fileName, callback));
}