private Bots.PhotoSize HandlePhotoSize(IPhotoSize photoSize)
{
var photoSizeEmptyTelegram = photoSize as SharpTelegram.Schema.PhotoSizeEmpty;
var photoSizeTelegram = photoSize as SharpTelegram.Schema.PhotoSize;
var photoCachedSizeTelegram = photoSize as SharpTelegram.Schema.PhotoCachedSize;
if (photoSizeEmptyTelegram != null)
{
return(null);
}
else if (photoSizeTelegram != null)
{
return(new Bots.PhotoSize
{
Type = photoSizeTelegram.Type,
Location = HandleFileLocation(photoSizeTelegram.Location),
W = photoSizeTelegram.W,
H = photoSizeTelegram.H,
Size = (int)photoSizeTelegram.Size
});
}
else if (photoCachedSizeTelegram != null)
{
return(new Bots.PhotoCachedSize
{
Type = photoCachedSizeTelegram.Type,
Location = HandleFileLocation(photoCachedSizeTelegram.Location),
W = photoCachedSizeTelegram.W,
H = photoCachedSizeTelegram.H,
Bytes = photoCachedSizeTelegram.Bytes
});
}
return(null);
}
public static double GetGifDimension(double maxGifDimension, IPhotoSize thumb, IAttributes attributes, bool isWidth)
{
TLDocumentAttributeVideo videoAttribute = null;
if (attributes != null)
{
for (var i = 0; i < attributes.Attributes.Count; i++)
{
videoAttribute = attributes.Attributes[i] as TLDocumentAttributeVideo;
if (videoAttribute != null)
{
break;
}
}
}
if (videoAttribute != null)
{
var width = videoAttribute.W.Value;
var height = videoAttribute.H.Value;
var maxDimension = width;
if (maxDimension > 0)
{
var scaleFactor = maxGifDimension / maxDimension;
return(isWidth ? scaleFactor * width : scaleFactor *height);
}
}
if (thumb != null)
{
var width = thumb.W.Value;
var height = thumb.H.Value;
var maxDimension = width;
if (maxDimension > 0)
{
var scaleFactor = maxGifDimension / maxDimension;
return(isWidth ? scaleFactor * width : scaleFactor *height);
}
}
return(maxGifDimension);
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
var minVerticalRatioToScale = 1.2;
var scale = 1.2; // must be less than minVerticalRatioToScale to avoid large square photos
if (string.Equals((string)parameter, "Width", StringComparison.OrdinalIgnoreCase))
{
var decryptedMediaPhoto = value as TLDecryptedMessageMediaPhoto;
if (decryptedMediaPhoto != null)
{
if (decryptedMediaPhoto.H.Value > decryptedMediaPhoto.W.Value)
{
if (IsScaledVerticalPhoto(minVerticalRatioToScale, decryptedMediaPhoto.H, decryptedMediaPhoto.W))
{
return(scale * MaxDimension / decryptedMediaPhoto.H.Value * decryptedMediaPhoto.W.Value);
}
return(MaxDimension / decryptedMediaPhoto.H.Value * decryptedMediaPhoto.W.Value);
}
return(MaxDimension);
}
var mediaPhoto = value as TLMessageMediaPhoto;
if (mediaPhoto != null)
{
value = mediaPhoto.Photo;
}
var photo = value as TLPhoto;
if (photo != null)
{
IPhotoSize size = null;
var sizes = photo.Sizes.OfType <IPhotoSize>();
foreach (var photoSize in sizes)
{
if (size == null ||
Math.Abs(MaxDimension - size.H.Value) > Math.Abs(MaxDimension - photoSize.H.Value))
{
size = photoSize;
}
}
if (size != null)
{
if (size.H.Value > size.W.Value)
{
if (IsScaledVerticalPhoto(minVerticalRatioToScale, size.H, size.W))
{
return(scale * MaxDimension / size.H.Value * size.W.Value);
}
return(MaxDimension / size.H.Value * size.W.Value);
}
return(MaxDimension);
}
}
var mediaDocument = value as TLMessageMediaDocument;
if (mediaDocument != null)
{
return(new VideoToDimensionConverter().Convert(value, targetType, parameter, culture));
}
}
{
var decryptedMediaPhoto = value as TLDecryptedMessageMediaPhoto;
if (decryptedMediaPhoto != null)
{
if (decryptedMediaPhoto.H.Value > decryptedMediaPhoto.W.Value)
{
if (IsScaledVerticalPhoto(minVerticalRatioToScale, decryptedMediaPhoto.H, decryptedMediaPhoto.W))
{
return(scale * MaxDimension);
}
return(MaxDimension);
}
return(MaxDimension / decryptedMediaPhoto.W.Value * decryptedMediaPhoto.H.Value);
}
var mediaPhoto = value as TLMessageMediaPhoto;
if (mediaPhoto != null)
{
value = mediaPhoto.Photo;
}
var photo = value as TLPhoto;
if (photo != null)
{
IPhotoSize size = null;
var sizes = photo.Sizes.OfType <IPhotoSize>();
foreach (var photoSize in sizes)
{
if (size == null ||
Math.Abs(MaxDimension - size.W.Value) > Math.Abs(MaxDimension - photoSize.W.Value))
{
size = photoSize;
}
}
if (size != null)
{
if (size.H.Value > size.W.Value)
{
if (IsScaledVerticalPhoto(minVerticalRatioToScale, size.H, size.W))
{
return(scale * MaxDimension);
}
return(MaxDimension);
}
return(MaxDimension / size.W.Value * size.H.Value);
}
}
var mediaDocument = value as TLMessageMediaDocument;
if (mediaDocument != null)
{
return(new VideoToDimensionConverter().Convert(value, targetType, parameter, culture));
}
}
return(double.NaN);
}
public static PhotoSize Parse(IPhotoSize photoSize)
{
string key = photoSize.GetType().FullName;
return(Switch[key](photoSize));
}
