public void AddItem(ScanDevice sd)
{
var pIns = liMain.Count;
liMain.Add(sd);
NotifyItemInserted(pIns);
}
private void ChooseDevice(string driverName)
{
var driver = driverFactory.Create(driverName);
try
{
driver.DialogParent = this;
ScanDevice device = driver.PromptForDevice();
if (device != null)
{
if (string.IsNullOrEmpty(txtName.Text) ||
CurrentDevice != null && CurrentDevice.Name == txtName.Text)
{
txtName.Text = device.Name;
}
CurrentDevice = device;
}
}
catch (ScanDriverException e)
{
if (e is ScanDriverUnknownException)
{
Log.ErrorException(e.Message, e.InnerException);
}
errorOutput.DisplayError(e.Message);
}
}
private void txtDevice_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Delete)
{
CurrentDevice = null;
}
}
private void rdWIA_CheckedChanged(object sender, EventArgs e)
{
if (!suppressChangeEvent)
{
ScanSettings.Device = null;
CurrentDevice = null;
UpdateEnabledControls();
}
}
public WiaBackgroundEventLoop(ExtendedScanSettings settings, ScanDevice scanDevice)
{
this.settings = settings;
this.scanDevice = scanDevice;
thread = new Thread(RunEventLoop);
thread.SetApartmentState(ApartmentState.STA);
thread.Start();
// Wait for the thread to initialize the background form and event loop
initWaiter.WaitOne();
}
private void btnSelect_Click(object sender, EventArgs e)
{
if (listboxDevices.SelectedItem == null)
{
listboxDevices.Focus();
return;
}
DialogResult = DialogResult.OK;
SelectedDevice = ((ScanDevice)listboxDevices.SelectedItem);
Close();
}
public WiaBackgroundEventLoop(ScanProfile profile, ScanDevice scanDevice, ThreadFactory threadFactory)
{
this.profile = profile;
this.scanDevice = scanDevice;
thread = threadFactory.CreateThread(RunEventLoop);
thread.SetApartmentState(ApartmentState.STA);
thread.Start();
// Wait for the thread to initialize the background form and event loop
initWaiter.WaitOne();
}
public bool Start(ScanProfile scanProfile, ScanDevice scanDevice, ScanParams scanParams, IWin32Window dialogParent, ScannedImageSource.Concrete source)
{
ScanProfile = scanProfile;
ScanDevice = scanDevice;
ScanParams = scanParams;
DialogParent = dialogParent;
ProgressTitle = ScanDevice.Name;
Status = new OperationStatus
{
StatusText = ScanProfile.PaperSource == ScanSource.Glass
? MiscResources.AcquiringData
: string.Format(MiscResources.ScanProgressPage, 1),
MaxProgress = 1000,
ProgressType = OperationProgressType.BarOnly
};
// TODO: NoUI
// TODO: Test native UI in console behaviour (versus older behaviour)
// TODO: What happens if you close FDesktop while a batch scan is in progress?
RunAsync(() =>
{
try
{
try
{
smoothProgress.Reset();
Scan(source);
}
catch (WiaException e)
{
WiaScanErrors.ThrowDeviceError(e);
}
return(true);
}
catch (Exception e)
{
// Don't call InvokeError; the driver will do the actual error handling
ScanException = e;
return(false);
}
finally
{
smoothProgress.Reset();
}
});
return(true);
}
/// <summary>
/// 初始扫码枪
/// </summary>
private void InitScanDevice()
{
string strPath = AppDomain.CurrentDomain.BaseDirectory + "Data\\Scan.txt";
List <string[]> lstScan = GetCSVData(strPath);
if (lstScan.Count == 0)
{
return;
}
foreach (var scan in lstScan)
{
ScanDevice scanDevice = new ScanDevice(Convert.ToInt32(scan[0]), scan[1], scan[2], scan[3], Convert.ToInt32(scan[4]), 9004);
ScanDevices.Add(scanDevice);
}
}
public async Task TwainScan(ScanDevice scanDevice, ScanProfile scanProfile, ScanParams scanParams, IntPtr hwnd)
{
try
{
await Task.Factory.StartNew(() =>
{
var imagePathDict = new Dictionary <ScannedImage, string>();
twainWrapper.Scan(hwnd == IntPtr.Zero ? null : new Win32Window(hwnd), scanDevice, scanProfile, scanParams, twainScanCts.Token,
new WorkerImageSource(Callback, imagePathDict), (img, _, path) => imagePathDict.Add(img, path));
}, TaskCreationOptions.LongRunning);
}
catch (ScanDriverException e)
{
throw new FaultException <ScanDriverExceptionDetail>(new ScanDriverExceptionDetail(e));
}
}
public static List<ScannedImage> Scan(ScanProfile settings, ScanDevice device, IWin32Window pForm, IFormFactory formFactory)
{
var tw = new Twain();
if (!tw.Init(pForm.Handle))
{
throw new DeviceNotFoundException();
}
if (!tw.SelectByName(device.ID))
{
throw new DeviceNotFoundException();
}
var form = formFactory.Create<FTwainGui>();
var mf = new TwainMessageFilter(settings, tw, form);
form.ShowDialog(pForm);
return mf.Bitmaps;
}
public void UpdateItem(int i, ScanDevice sd)
{
if (sd.status != Constants.DEVICE_STAT_NONE)
{
if (i != lastItemExp && lastItemExp >= 0)
{
var a = liMain[lastItemExp];
a.status = Constants.DEVICE_STAT_NONE;
liMain[lastItemExp] = a;
NotifyItemChanged(lastItemExp);
}
lastItemExp = i;
}
liMain[i] = sd;
NotifyItemChanged(i);
}
public static List <ScannedImage> Scan(ScanProfile settings, ScanDevice device, IWin32Window pForm, IFormFactory formFactory)
{
var tw = new Twain();
if (!tw.Init(pForm.Handle))
{
throw new DeviceNotFoundException();
}
if (!tw.SelectByName(device.ID))
{
throw new DeviceNotFoundException();
}
var form = formFactory.Create <FTwainGui>();
var mf = new TwainMessageFilter(settings, tw, form);
form.ShowDialog(pForm);
return(mf.Bitmaps);
}
public static Device GetDevice(ScanDevice scanDevice)
{
DeviceManager manager = new DeviceManagerClass();
foreach (DeviceInfo info in manager.DeviceInfos)
{
if (info.DeviceID == scanDevice.ID)
{
try
{
return info.Connect();
}
catch (COMException e)
{
ThrowDeviceError(e);
}
}
}
throw new DeviceNotFoundException();
}
public static Device GetDevice(ScanDevice scanDevice)
{
DeviceManager manager = new DeviceManagerClass();
foreach (DeviceInfo info in manager.DeviceInfos)
{
if (info.DeviceID == scanDevice.ID)
{
try
{
return info.Connect();
}
catch (COMException e)
{
ThrowDeviceError(e);
}
}
}
throw new DeviceNotFoundException();
}
private void MiReScan_Click(object sender, RoutedEventArgs e)
{
MenuItem mi = sender as MenuItem;
ContextMenu ctxMenu = mi.Parent as ContextMenu;
DataGrid dataGrid = ctxMenu.PlacementTarget as DataGrid;
if (dataGrid.SelectedItems != null && dataGrid.SelectedItems.Count > 0)
{
foreach (var item in dataGrid.SelectedItems)
{
ScanDevice scan = item as ScanDevice;
var stop = viewModel.Source.StopDevices.FirstOrDefault(p => p.Scan_Device_No == scan.NO && p.STATUS == 1);
if (stop == null || string.IsNullOrEmpty(stop.Scan_Device_No))
{
continue;
}
viewModel.TriggerScan(stop);
}
}
}
public void Scan(IWin32Window dialogParent, ScanDevice scanDevice, ScanProfile scanProfile, ScanParams scanParams,
CancellationToken cancelToken, ScannedImageSource.Concrete source, Action <ScannedImage, ScanParams, string> runBackgroundOcr)
{
try
{
InternalScan(scanProfile.TwainImpl, dialogParent, scanDevice, scanProfile, scanParams, cancelToken, source, runBackgroundOcr);
}
catch (DeviceNotFoundException)
{
if (scanProfile.TwainImpl == TwainImpl.Default)
{
// Fall back to OldDsm in case of no devices
// This is primarily for Citrix support, which requires using twain_32.dll for TWAIN passthrough
InternalScan(TwainImpl.OldDsm, dialogParent, scanDevice, scanProfile, scanParams, cancelToken, source, runBackgroundOcr);
}
else
{
throw;
}
}
}
private void OnScanDeviceFound(Discover.DeviceInfo deviceinfo)
{
Application.SynchronizationContext.Post(_ =>
{
try
{
var sd = new ScanDevice();
sd.id = ViewHelper.CurrentTimeMillis();
sd.title1 = deviceinfo.Model;
sd.title2 = deviceinfo.IpAddress;
sd.scanDevice = deviceinfo;
rvAdapter.AddItem(sd);
vfMain.DisplayedChild = 2;
}
catch (Exception e)
{
}
}, null);
}
public static void Scan(ScanProfile settings, ScanDevice device, IWin32Window pForm, IFormFactory formFactory, ScannedImageSource.Concrete source)
{
var tw = new Twain();
if (!tw.Init(pForm.Handle))
{
throw new DeviceNotFoundException();
}
if (!tw.SelectByName(device.ID))
{
throw new DeviceNotFoundException();
}
var form = formFactory.Create <FTwainGui>();
var mf = new TwainMessageFilter(settings, tw, form);
form.ShowDialog(pForm);
foreach (var b in mf.Bitmaps)
{
source.Put(b);
}
}
public static void Scan(ScanProfile settings, ScanDevice device, IWin32Window pForm, IFormFactory formFactory, ScannedImageSource.Concrete source)
{
var tw = new Twain();
var windowHandle = (Invoker.Current as Form)?.Handle ?? pForm.Handle;
if (!tw.Init(windowHandle))
{
throw new DeviceNotFoundException();
}
if (!tw.SelectByName(device.Id))
{
throw new DeviceNotFoundException();
}
var form = Invoker.Current.InvokeGet(formFactory.Create <FTwainGui>);
var mf = new TwainMessageFilter(settings, tw, form);
Invoker.Current.Invoke(() => form.ShowDialog(pForm));
foreach (var b in mf.Bitmaps)
{
source.Put(b);
}
}
public static Device GetDevice(ScanDevice scanDevice)
{
DeviceManager manager = new DeviceManagerClass();
foreach (DeviceInfo info in manager.DeviceInfos)
{
if (info.DeviceID == scanDevice.ID)
{
try
{
return info.Connect();
}
catch (COMException e)
{
if ((uint)e.ErrorCode == Errors.OFFLINE)
{
throw new DeviceOfflineException();
}
throw new ScanDriverUnknownException(e);
}
}
}
throw new DeviceNotFoundException();
}
public static Device GetDevice(ScanDevice scanDevice)
{
DeviceManager manager = new DeviceManagerClass();
foreach (DeviceInfo info in manager.DeviceInfos)
{
if (info.DeviceID == scanDevice.ID)
{
try
{
return(info.Connect());
}
catch (COMException e)
{
if ((uint)e.ErrorCode == Errors.OFFLINE)
{
throw new DeviceOfflineException();
}
throw new ScanDriverUnknownException(e);
}
}
}
throw new DeviceNotFoundException();
}
public List <ScannedImage> Scan(IWin32Window dialogParent, bool activate, ScanDevice scanDevice, ScanProfile scanProfile, ScanParams scanParams)
{
if (scanProfile.TwainImpl == TwainImpl.Legacy)
{
return(Legacy.TwainApi.Scan(scanProfile, scanDevice, dialogParent, formFactory));
}
PlatformInfo.Current.PreferNewDSM = scanProfile.TwainImpl != TwainImpl.OldDsm;
var session = new TwainSession(TwainAppId);
var twainForm = formFactory.Create <FTwainGui>();
var images = new List <ScannedImage>();
Exception error = null;
bool cancel = false;
DataSource ds = null;
int pageNumber = 0;
session.TransferReady += (sender, eventArgs) =>
{
Debug.WriteLine("NAPS2.TW - TransferReady");
if (cancel)
{
eventArgs.CancelAll = true;
}
};
session.DataTransferred += (sender, eventArgs) =>
{
try
{
Debug.WriteLine("NAPS2.TW - DataTransferred");
pageNumber++;
using (var output = scanProfile.TwainImpl == TwainImpl.MemXfer
? GetBitmapFromMemXFer(eventArgs.MemoryData, eventArgs.ImageInfo)
: Image.FromStream(eventArgs.GetNativeImageStream()))
{
using (var result = scannedImageHelper.PostProcessStep1(output, scanProfile))
{
if (blankDetector.ExcludePage(result, scanProfile))
{
return;
}
var bitDepth = output.PixelFormat == PixelFormat.Format1bppIndexed
? ScanBitDepth.BlackWhite
: ScanBitDepth.C24Bit;
var image = new ScannedImage(result, bitDepth, scanProfile.MaxQuality, scanProfile.Quality);
image.SetThumbnail(thumbnailRenderer.RenderThumbnail(result));
if (scanParams.DetectPatchCodes)
{
foreach (var patchCodeInfo in eventArgs.GetExtImageInfo(ExtendedImageInfo.PatchCode))
{
if (patchCodeInfo.ReturnCode == ReturnCode.Success)
{
image.PatchCode = GetPatchCode(patchCodeInfo);
}
}
}
scannedImageHelper.PostProcessStep2(image, result, scanProfile, scanParams, pageNumber);
images.Add(image);
}
}
}
catch (Exception ex)
{
Debug.WriteLine("NAPS2.TW - DataTransferred - Error");
error = ex;
cancel = true;
twainForm.Close();
}
};
session.TransferError += (sender, eventArgs) =>
{
Debug.WriteLine("NAPS2.TW - TransferError");
if (eventArgs.Exception != null)
{
error = eventArgs.Exception;
}
else if (eventArgs.SourceStatus != null)
{
Log.Error("TWAIN Transfer Error. Return code = {0}; condition code = {1}; data = {2}.",
eventArgs.ReturnCode, eventArgs.SourceStatus.ConditionCode, eventArgs.SourceStatus.Data);
}
else
{
Log.Error("TWAIN Transfer Error. Return code = {0}.", eventArgs.ReturnCode);
}
cancel = true;
twainForm.Close();
};
session.SourceDisabled += (sender, eventArgs) =>
{
Debug.WriteLine("NAPS2.TW - SourceDisabled");
twainForm.Close();
};
twainForm.Shown += (sender, eventArgs) =>
{
if (activate)
{
// TODO: Set this flag based on whether NAPS2 already has focus
// http://stackoverflow.com/questions/7162834/determine-if-current-application-is-activated-has-focus
// Or maybe http://stackoverflow.com/questions/156046/show-a-form-without-stealing-focus
twainForm.Activate();
}
Debug.WriteLine("NAPS2.TW - TwainForm.Shown");
try
{
ReturnCode rc = session.Open(new WindowsFormsMessageLoopHook(dialogParent.Handle));
if (rc != ReturnCode.Success)
{
Debug.WriteLine("NAPS2.TW - Could not open session - {0}", rc);
twainForm.Close();
return;
}
ds = session.FirstOrDefault(x => x.Name == scanDevice.ID);
if (ds == null)
{
Debug.WriteLine("NAPS2.TW - Could not find DS - DS count = {0}", session.Count());
throw new DeviceNotFoundException();
}
rc = ds.Open();
if (rc != ReturnCode.Success)
{
Debug.WriteLine("NAPS2.TW - Could not open DS - {0}", rc);
twainForm.Close();
return;
}
ConfigureDS(ds, scanProfile, scanParams);
var ui = scanProfile.UseNativeUI ? SourceEnableMode.ShowUI : SourceEnableMode.NoUI;
Debug.WriteLine("NAPS2.TW - Enabling DS");
rc = ds.Enable(ui, true, twainForm.Handle);
Debug.WriteLine("NAPS2.TW - Enable finished");
if (rc != ReturnCode.Success)
{
Debug.WriteLine("NAPS2.TW - Enable failed - {0}, rc");
twainForm.Close();
}
}
catch (Exception ex)
{
Debug.WriteLine("NAPS2.TW - Error");
error = ex;
twainForm.Close();
}
};
Debug.WriteLine("NAPS2.TW - Showing TwainForm");
twainForm.ShowDialog(dialogParent);
Debug.WriteLine("NAPS2.TW - TwainForm closed");
if (ds != null && session.IsSourceOpen)
{
Debug.WriteLine("NAPS2.TW - Closing DS");
ds.Close();
}
if (session.IsDsmOpen)
{
Debug.WriteLine("NAPS2.TW - Closing session");
session.Close();
}
if (error != null)
{
Debug.WriteLine("NAPS2.TW - Throwing error - {0}", error);
if (error is ScanDriverException)
{
throw error;
}
throw new ScanDriverUnknownException(error);
}
return(images);
}
public List<ScannedImage> Scan(IWin32Window dialogParent, bool activate, ScanDevice scanDevice, ScanProfile scanProfile, ScanParams scanParams)
{
if (scanProfile.TwainImpl == TwainImpl.Legacy)
{
return Legacy.TwainApi.Scan(scanProfile, scanDevice, dialogParent, formFactory);
}
var session = new TwainSession(TwainAppId);
var twainForm = formFactory.Create<FTwainGui>();
var images = new List<ScannedImage>();
Exception error = null;
bool cancel = false;
DataSource ds = null;
session.TransferReady += (sender, eventArgs) =>
{
Debug.WriteLine("NAPS2.TW - TransferReady");
if (cancel)
{
eventArgs.CancelAll = true;
}
};
session.DataTransferred += (sender, eventArgs) =>
{
Debug.WriteLine("NAPS2.TW - DataTransferred");
using (var output = Image.FromStream(eventArgs.GetNativeImageStream()))
{
using (var result = ScannedImageHelper.PostProcessStep1(output, scanProfile))
{
if (blankDetector.ExcludePage(result, scanProfile))
{
return;
}
var bitDepth = output.PixelFormat == PixelFormat.Format1bppIndexed
? ScanBitDepth.BlackWhite
: ScanBitDepth.C24Bit;
var image = new ScannedImage(result, bitDepth, scanProfile.MaxQuality, scanProfile.Quality);
ScannedImageHelper.PostProcessStep2(image, scanProfile);
if (scanParams.DetectPatchCodes)
{
foreach (var patchCodeInfo in eventArgs.GetExtImageInfo(ExtendedImageInfo.PatchCode))
{
if (patchCodeInfo.ReturnCode == ReturnCode.Success)
{
image.PatchCode = GetPatchCode(patchCodeInfo);
}
}
}
images.Add(image);
}
}
};
session.TransferError += (sender, eventArgs) =>
{
Debug.WriteLine("NAPS2.TW - TransferError");
if (eventArgs.Exception != null)
{
error = eventArgs.Exception;
}
else if (eventArgs.SourceStatus != null)
{
Log.Error("TWAIN Transfer Error. Return code = {0}; condition code = {1}; data = {2}.",
eventArgs.ReturnCode, eventArgs.SourceStatus.ConditionCode, eventArgs.SourceStatus.Data);
}
else
{
Log.Error("TWAIN Transfer Error. Return code = {0}.", eventArgs.ReturnCode);
}
cancel = true;
twainForm.Close();
};
session.SourceDisabled += (sender, eventArgs) =>
{
Debug.WriteLine("NAPS2.TW - SourceDisabled");
twainForm.Close();
};
twainForm.Shown += (sender, eventArgs) =>
{
if (activate)
{
// TODO: Set this flag based on whether NAPS2 already has focus
// http://stackoverflow.com/questions/7162834/determine-if-current-application-is-activated-has-focus
// Or maybe http://stackoverflow.com/questions/156046/show-a-form-without-stealing-focus
twainForm.Activate();
}
Debug.WriteLine("NAPS2.TW - TwainForm.Shown");
try
{
ReturnCode rc = session.Open(new WindowsFormsMessageLoopHook(dialogParent.Handle));
if (rc != ReturnCode.Success)
{
Debug.WriteLine("NAPS2.TW - Could not open session - {0}", rc);
twainForm.Close();
return;
}
ds = session.FirstOrDefault(x => x.Name == scanDevice.ID);
if (ds == null)
{
Debug.WriteLine("NAPS2.TW - Could not find DS - DS count = {0}", session.Count());
throw new DeviceNotFoundException();
}
rc = ds.Open();
if (rc != ReturnCode.Success)
{
Debug.WriteLine("NAPS2.TW - Could not open DS - {0}", rc);
twainForm.Close();
return;
}
ConfigureDS(ds, scanProfile, scanParams);
var ui = scanProfile.UseNativeUI ? SourceEnableMode.ShowUI : SourceEnableMode.NoUI;
Debug.WriteLine("NAPS2.TW - Enabling DS");
rc = ds.Enable(ui, true, twainForm.Handle);
Debug.WriteLine("NAPS2.TW - Enable finished");
if (rc != ReturnCode.Success)
{
Debug.WriteLine("NAPS2.TW - Enable failed - {0}, rc");
twainForm.Close();
}
}
catch (Exception ex)
{
Debug.WriteLine("NAPS2.TW - Error");
error = ex;
twainForm.Close();
}
};
Debug.WriteLine("NAPS2.TW - Showing TwainForm");
twainForm.ShowDialog(dialogParent);
Debug.WriteLine("NAPS2.TW - TwainForm closed");
if (ds != null && session.IsSourceOpen)
{
Debug.WriteLine("NAPS2.TW - Closing DS");
ds.Close();
}
if (session.IsDsmOpen)
{
Debug.WriteLine("NAPS2.TW - Closing session");
session.Close();
}
if (error != null)
{
Debug.WriteLine("NAPS2.TW - Throwing error - {0}", error);
if (error is ScanDriverException)
{
throw error;
}
throw new ScanDriverUnknownException(error);
}
return images;
}
public List <RecoveryIndexImage> TwainScan(int recoveryFileNumber, ScanDevice scanDevice, ScanProfile scanProfile, ScanParams scanParams)
{
RecoveryImage.RecoveryFileNumber = recoveryFileNumber;
return(twainWrapper.Scan(ParentForm, true, scanDevice, scanProfile, scanParams).Select(x => x.RecoveryIndexImage).ToList());
}
private void InternalScan(TwainImpl twainImpl, IWin32Window dialogParent, ScanDevice scanDevice, ScanProfile scanProfile, ScanParams scanParams,
CancellationToken cancelToken, ScannedImageSource.Concrete source, Action <ScannedImage, ScanParams, string> runBackgroundOcr)
{
if (dialogParent == null)
{
dialogParent = new BackgroundForm();
}
if (twainImpl == TwainImpl.Legacy)
{
Legacy.TwainApi.Scan(scanProfile, scanDevice, dialogParent, formFactory, source);
return;
}
PlatformInfo.Current.PreferNewDSM = twainImpl != TwainImpl.OldDsm;
var session = new TwainSession(TwainAppId);
var twainForm = Invoker.Current.InvokeGet(() => scanParams.NoUI ? null : formFactory.Create <FTwainGui>());
Exception error = null;
bool cancel = false;
DataSource ds = null;
var waitHandle = new AutoResetEvent(false);
int pageNumber = 0;
session.TransferReady += (sender, eventArgs) =>
{
Debug.WriteLine("NAPS2.TW - TransferReady");
if (cancel)
{
eventArgs.CancelAll = true;
}
};
session.DataTransferred += (sender, eventArgs) =>
{
try
{
Debug.WriteLine("NAPS2.TW - DataTransferred");
pageNumber++;
using (var output = twainImpl == TwainImpl.MemXfer
? GetBitmapFromMemXFer(eventArgs.MemoryData, eventArgs.ImageInfo)
: Image.FromStream(eventArgs.GetNativeImageStream()))
{
using (var result = scannedImageHelper.PostProcessStep1(output, scanProfile))
{
if (blankDetector.ExcludePage(result, scanProfile))
{
return;
}
var bitDepth = output.PixelFormat == PixelFormat.Format1bppIndexed
? ScanBitDepth.BlackWhite
: ScanBitDepth.C24Bit;
var image = new ScannedImage(result, bitDepth, scanProfile.MaxQuality, scanProfile.Quality);
if (scanParams.DetectPatchCodes)
{
foreach (var patchCodeInfo in eventArgs.GetExtImageInfo(ExtendedImageInfo.PatchCode))
{
if (patchCodeInfo.ReturnCode == ReturnCode.Success)
{
image.PatchCode = GetPatchCode(patchCodeInfo);
}
}
}
scannedImageHelper.PostProcessStep2(image, result, scanProfile, scanParams, pageNumber);
string tempPath = scannedImageHelper.SaveForBackgroundOcr(result, scanParams);
runBackgroundOcr(image, scanParams, tempPath);
source.Put(image);
}
}
}
catch (Exception ex)
{
Debug.WriteLine("NAPS2.TW - DataTransferred - Error");
error = ex;
cancel = true;
StopTwain();
}
};
session.TransferError += (sender, eventArgs) =>
{
Debug.WriteLine("NAPS2.TW - TransferError");
if (eventArgs.Exception != null)
{
error = eventArgs.Exception;
}
else if (eventArgs.SourceStatus != null)
{
Log.Error("TWAIN Transfer Error. Return code = {0}; condition code = {1}; data = {2}.",
eventArgs.ReturnCode, eventArgs.SourceStatus.ConditionCode, eventArgs.SourceStatus.Data);
}
else
{
Log.Error("TWAIN Transfer Error. Return code = {0}.", eventArgs.ReturnCode);
}
cancel = true;
StopTwain();
};
session.SourceDisabled += (sender, eventArgs) =>
{
Debug.WriteLine("NAPS2.TW - SourceDisabled");
StopTwain();
};
void StopTwain()
{
waitHandle.Set();
if (!scanParams.NoUI)
{
Invoker.Current.Invoke(() => twainForm.Close());
}
}
void InitTwain()
{
try
{
var windowHandle = (Invoker.Current as Form)?.Handle;
ReturnCode rc = windowHandle != null?session.Open(new WindowsFormsMessageLoopHook(windowHandle.Value)) : session.Open();
if (rc != ReturnCode.Success)
{
Debug.WriteLine("NAPS2.TW - Could not open session - {0}", rc);
StopTwain();
return;
}
ds = session.FirstOrDefault(x => x.Name == scanDevice.ID);
if (ds == null)
{
Debug.WriteLine("NAPS2.TW - Could not find DS - DS count = {0}", session.Count());
throw new DeviceNotFoundException();
}
rc = ds.Open();
if (rc != ReturnCode.Success)
{
Debug.WriteLine("NAPS2.TW - Could not open DS - {0}", rc);
StopTwain();
return;
}
ConfigureDS(ds, scanProfile, scanParams);
var ui = scanProfile.UseNativeUI ? SourceEnableMode.ShowUI : SourceEnableMode.NoUI;
Debug.WriteLine("NAPS2.TW - Enabling DS");
rc = scanParams.NoUI ? ds.Enable(ui, true, windowHandle ?? IntPtr.Zero) : ds.Enable(ui, true, twainForm.Handle);
Debug.WriteLine("NAPS2.TW - Enable finished");
if (rc != ReturnCode.Success)
{
Debug.WriteLine("NAPS2.TW - Enable failed - {0}, rc");
StopTwain();
}
else
{
cancelToken.Register(() =>
{
Debug.WriteLine("NAPS2.TW - User Cancel");
cancel = true;
session.ForceStepDown(5);
});
}
}
catch (Exception ex)
{
Debug.WriteLine("NAPS2.TW - Error");
error = ex;
StopTwain();
}
}
if (!scanParams.NoUI)
{
twainForm.Shown += (sender, eventArgs) => { InitTwain(); };
twainForm.Closed += (sender, args) => waitHandle.Set();
}
if (scanParams.NoUI)
{
Debug.WriteLine("NAPS2.TW - Init with no form");
Invoker.Current.Invoke(InitTwain);
}
else if (!scanParams.Modal)
{
Debug.WriteLine("NAPS2.TW - Init with non-modal form");
Invoker.Current.Invoke(() => twainForm.Show(dialogParent));
}
else
{
Debug.WriteLine("NAPS2.TW - Init with modal form");
Invoker.Current.Invoke(() => twainForm.ShowDialog(dialogParent));
}
waitHandle.WaitOne();
Debug.WriteLine("NAPS2.TW - Operation complete");
if (ds != null && session.IsSourceOpen)
{
Debug.WriteLine("NAPS2.TW - Closing DS");
ds.Close();
}
if (session.IsDsmOpen)
{
Debug.WriteLine("NAPS2.TW - Closing session");
session.Close();
}
if (error != null)
{
Debug.WriteLine("NAPS2.TW - Throwing error - {0}", error);
if (error is ScanDriverException)
{
throw error;
}
throw new ScanDriverUnknownException(error);
}
}
public static object GetDevice(ScanDevice scanDevice)
{
throw new NotImplementedException();
}
