public ScanResult Execute(object markerAsynchrone)
{
_log.Info("======================================= SCAN COMMAND ========================================");
_log.Info(string.Format("Start execute with scan params: " +
"source={0}, sourceFeed={1}, dpi={2}, colorMode={3}, compressionFormat={4}, format={5}, " +
"isPackage={6}, saveAs={7}, CurrentSourceIndex={8}, Index={9}",
_command.Source,
_command.DocumentHandlingCap,
_command.DPI,
_command.ColorMode,
_command.CompressionFormat.ImgFormat,
_command.Format.Name,
_command.IsPackage,
_command.SaveAs,
_scannerManager.CurrentSourceIndex,
_scannerManager.CurrentSource.Index
));
ScanResult scanResult;
try
{
var scannedImages = new List <Image>();
lock (markerAsynchrone)
{
if (_scannerManager.CurrentSourceIndex != _command.Source)
{
new AsyncWorker <int>().RunWorkAsync(_command.Source, _scannerManager.ChangeSource,
WaitTimeForChangeSource);
if (_scannerManager.CurrentSourceIndex != _command.Source)
{
return(new SingleScanResult("Не удается изменить источник данных"));
}
}
var settingAcquire = new SettingsAcquire
{
Format = _command.Format,
Resolution = _command.DPI,
PixelType = _command.ColorMode,
ScanSource = _command.DocumentHandlingCap
};
//создаем отдельный поток и передаем в него метод сканирования(callback) и параметры для него
var images = new AsyncWorker <SettingsAcquire, List <Image> >().RunWorkAsync(settingAcquire, _scannerManager.CurrentSource.Scan, WaitTimaeForScan);
if (images != null)
{
foreach (var image in images)
{
var clonedImage = (Image)image.Clone();
image.Dispose();
((Bitmap)clonedImage).SetResolution(_command.DPI, _command.DPI);
scannedImages.Add(clonedImage);
}
}
}
if (scannedImages.Count == 0)
{
return(new SingleScanResult(
"Сканирование завершилось неудачей! Попробуйте переподключить сканер либо повторить сканирование с помощью другого устройства."));
}
if (scannedImages.Count == 1)
{
var image = scannedImages[0];
var downloadFile = SaveImage(image);
var singleScanResult = new SingleScanResult();
singleScanResult.FillContent(downloadFile);
scanResult = singleScanResult;
image.Dispose();
}
else
{
var downloadFiles = new List <DownloadFile>();
int counter;
try
{
counter = int.Parse(_command.FileCounter);
}
catch (Exception)
{
counter = 1;
}
foreach (var scannedImage in scannedImages)
{
var downloadFile = SaveImage(scannedImage, counter++);
downloadFiles.Add(downloadFile);
scannedImage.Dispose();
}
var multipleScanResult = new MultipleScanResult();
multipleScanResult.FillContent(downloadFiles);
scanResult = multipleScanResult;
}
}
catch (TwainException ex)
{
return(new SingleScanResult(ex.Message));
}
_log.Info("Scan command executed");
return(scanResult);
}
public ActionResult ConvertToBase64File(DownloadFileParam fileParam)
{
foreach (var fileCheck in fileParam.ListFiles)
{
if (!GlobalDictionaries.Scans.Exists(x => x == fileCheck.TempFile))
{
throw new Exception("Не найден файл для скачивания!");
}
}
var tempDir = Path.GetTempPath();
byte[] response;
var fileId = fileParam.ListFiles[0].TempFile;
var fileName = fileParam.ListFiles[0].FileName;
string mimeType = null;
if (fileParam.SaveAs == (int)GlobalDictionaries.SaveAsValues.Pdf)
{
fileId = MakePdf(fileParam.ListFiles);
mimeType = _mimeTypes["pdf"];
fileName = Path.ChangeExtension(fileName, ".pdf");
}
else
{
var extension = Path.GetExtension(fileName);
if (!string.IsNullOrEmpty(extension))
{
mimeType = _mimeTypes[extension.Substring(1).ToLower()];
}
}
var file = Path.Combine(tempDir, fileId);
string base64str = "";
if (File.Exists(file))
{
response = File.ReadAllBytes(file);
//массив байт конвертируем в строку
base64str = Convert.ToBase64String(response);
File.Delete(file);
GlobalDictionaries.Scans.Remove(fileId);
foreach (var img in fileParam.ListFiles)
{
if (File.Exists(tempDir + img.TempFile))
{
File.Delete(tempDir + img.TempFile);
GlobalDictionaries.Scans.Remove(img.TempFile);
}
}
}
else
{
response = Encoding.UTF8.GetBytes("Not found");
}
var singleScanResult = new SingleScanResult();
singleScanResult.FillContent(new DownloadFile(fileName, fileId), base64str);
//отправляем не файл а base64
return
(new ActionResult {
Content = singleScanResult.Content, ContentType = "text/json"
});
}