public byte[] Transform(byte[] img, TransformationParametrs parametrs)
{
byte[] result;
Rectangle cropRectangle = new Rectangle(parametrs.TopLeftConerX, parametrs.TopLeftConerY, parametrs.Width, parametrs.Height);
if (cropRectangle.Width == 0 || cropRectangle.Height == 0)
{
throw new ArgumentOutOfRangeException("Пустая область");
}
using (MemoryStream outStream = new MemoryStream())
{
// Initialize the ImageFactory using the overload to preserve EXIF metadata.
using (ImageFactory imageFactory = new ImageFactory(preserveExifData: true))
{
// Load, resize, set the format and quality and save an image.
imageFactory.Load(img);
if (imageFactory.Image.Width > 1000 || imageFactory.Image.Height > 1000)
{
throw new ArgumentException("Слишком большое изображение");
}
if (parametrs.Flip != Flip.None)
{
if (parametrs.Flip == Flip.Horizontal)
{
imageFactory.Flip(false);
}
else
{
imageFactory.Flip(true);
}
}
if (parametrs.Rotation != Rotation.None)
{
if (parametrs.Rotation == Rotation.Clockwise)
{
imageFactory.Rotate(90);
}
else
{
imageFactory.Rotate(-90);
}
}
try
{
imageFactory.Crop(cropRectangle);
}
catch (ArgumentOutOfRangeException)
{
throw new ArgumentOutOfRangeException("Пустая область");
}
imageFactory.Save(outStream);
}
// Do something with the stream.
result = outStream.ToArray();
}
return(result);
}
private Tuple <HttpListenerContext, byte[]> ProcessImage(HttpListenerContext httpContext)
{
string paramString = httpContext.Request.RawUrl;
byte[] inputImg;
byte[] outputImg;
paramString = paramString.Remove(0, 9);
paramString = paramString.Replace('/', ' ');
TransformationParametrs tParams;
try
{
MemoryStream inStream = new MemoryStream();
httpContext.Request.InputStream.CopyTo(inStream);
inputImg = inStream.ToArray();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
throw new Exception(ex.Message);
}
if (inputImg.LongLength > 100000)// проверка размера файла
{
httpContext.Response.StatusCode = (int)HttpStatusCode.BadRequest;
return(new Tuple <HttpListenerContext, byte[]>(httpContext, null));
}
try
{
tParams = TransformationParametrs.Parse(paramString);
}
catch (ArgumentException ae)
{
httpContext.Response.StatusCode = (int)HttpStatusCode.BadRequest;
return(new Tuple <HttpListenerContext, byte[]>(httpContext, null));
}
ImageTransformer.Transformer.ImageTransformer transformer = new ImageTransformer.Transformer.ImageTransformer();
try
{
outputImg = transformer.Transform(inputImg, tParams);
}
catch (ArgumentOutOfRangeException aoorEx)
{
httpContext.Response.StatusCode = (int)HttpStatusCode.NoContent;
return(new Tuple <HttpListenerContext, byte[]>(httpContext, null));
}
catch (ArgumentException argEx)
{
httpContext.Response.StatusCode = (int)HttpStatusCode.BadRequest;
return(new Tuple <HttpListenerContext, byte[]>(httpContext, null));
}
httpContext.Response.StatusCode = (int)HttpStatusCode.OK;
return(new Tuple <HttpListenerContext, byte[]>(httpContext, outputImg));
}
