- (UIImage*)resizedImageWithSize:(CGSize)size
{
   UIGraphicsBeginImageContext(size);

   [self drawInRect:CGRectMake(0.0f, 0.0f, size.width, size.height)];

   // Obraz zostanie automatycznie usunity z pamici.
   UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();

   UIGraphicsEndImageContext();

   return newImage;
}
