public ActionResult UploadImage(ImageModel model)
{
if (Request.Files.Count < 1 || Request.Files[0].ContentLength == 0)
return new HttpStatusCodeResult(403);
var files = new List<FilesStatus>();
var file = Request.Files[0];
if (file != null && !Regex.IsMatch(file.ContentType, "^image/"))
{
return new HttpStatusCodeResult(403);
}
try
{
// Get and add cropped image
ImageFormat imageFormat = GetImageFormat(file);
var croppedImageBytes = GetCroppedImage(model, file, imageFormat);
string croppedImageName = string.Empty;
if (croppedImageBytes != null)
{
croppedImageName = Constants.CroppedImagePrefix + file.FileName;
Session.Add(croppedImageName, croppedImageBytes);
}
var originalImageBytes = new byte[file.ContentLength];
file.InputStream.Seek(0, SeekOrigin.Begin);
file.InputStream.Read(originalImageBytes, 0, file.ContentLength);
Session.Add(file.FileName, originalImageBytes);
string thumbnailName;
var thumbImg = GetThumbImage(croppedImageBytes ?? originalImageBytes, imageFormat, file, out thumbnailName);
Session.Add(thumbnailName, thumbImg);
files.Add(new FilesStatus
{
size = originalImageBytes.Length,
name = file.FileName,
url = Url.Action("Image", new { session = true, name = file.FileName + "/" }),
thumbnail_url = Url.Action("Image", new { session = true, name = thumbnailName + "/" }),
type = file.ContentType,
cropped_image_name = croppedImageName,
cropped_image_size = croppedImageBytes != null ? croppedImageBytes.Length : 0
});
}
catch (Exception ex)
{
files.Add(new FilesStatus
{
name = file.FileName,
error = ex.Message,
});
}
var json = _jsonSerializer.Serialize(new FilesWrapper { files = files });
return Json(json);
}
private static byte[] GetCroppedImage(ImageModel model, HttpPostedFileBase file, ImageFormat imageFormat)
{
if (Math.Abs(model.CropX1 - model.CropX2) > 0 && Math.Abs(model.CropY1 - model.CropY2) > 0)
{
int width = Math.Abs(model.CropX2 - model.CropX1);
int height = Math.Abs(model.CropY2 - model.CropY1);
var cropRectangle = new Rectangle(model.CropX1, model.CropY1, width, height);
byte[] croppedImage;
using (var src = (Bitmap)System.Drawing.Image.FromStream(file.InputStream))
using (var target = new Bitmap(cropRectangle.Width, cropRectangle.Height))
{
using (Graphics graphics = Graphics.FromImage(target))
{
graphics.DrawImage(src, new Rectangle(0, 0, target.Width, target.Height), cropRectangle,
GraphicsUnit.Pixel);
}
using (var stream = new MemoryStream())
{
target.Save(stream, imageFormat);
croppedImage = new byte[stream.Length];
stream.Seek(0, SeekOrigin.Begin);
stream.Read(croppedImage, 0, (int)stream.Length);
}
}
return croppedImage;
}
return null;
}
