private void Session_TransferReady(object sender, TransferReadyEventArgs e)
{
var transferMechanism = Session.CurrentSource.Capabilities.ICapXferMech.GetCurrent();
if (transferMechanism == XferMech.File)
{
var formats = Session.CurrentSource.Capabilities.ICapImageFileFormat.GetValues();
var scannerImageFormat = formats.Contains(FileFormat.Tiff) ? FileFormat.Tiff : FileFormat.Bmp;
var fileSetup = new TWSetupFileXfer
{
Format = scannerImageFormat,
FileName = GetUniqueName(Path.GetTempPath(), "twain-test", "." + scannerImageFormat)
};
}
}
void Session_TransferReady(object sender, TransferReadyEventArgs e)
{
var mech = session.CurrentSource.Capabilities.ICapXferMech.GetCurrent();
if (mech == XferMech.File)
{
var formats = session.CurrentSource.Capabilities.ICapImageFileFormat.GetValues();
var wantFormat = formats.Contains(FileFormat.Tiff) ? FileFormat.Tiff : FileFormat.Bmp;
var fileSetup = new TWSetupFileXfer
{
Format = wantFormat,
FileName = GetUniqueName(Path.GetTempPath(), "twain-test", "." + wantFormat)
};
session.CurrentSource.DGControl.SetupFileXfer.Set(fileSetup);
}
}
private void OnTransferReady(object sender, TransferReadyEventArgs e)
{
_dataSource.Capabilities.CapFeederEnabled.SetValue(BoolType.False);
_dataSource.Capabilities.CapDuplexEnabled.SetValue(BoolType.False);
_dataSource.Capabilities.ICapPixelType.SetValue(PixelType.RGB);
_dataSource.Capabilities.ICapUnits.SetValue(Unit.Inches);
TWImageLayout imageLayout;
_dataSource.DGImage.ImageLayout.Get(out imageLayout);
imageLayout.Frame = new TWFrame
{
Left = 0,
Right = 210 * 0.393701f,
Top = 0,
Bottom = 297 * 0.393701f
};
_dataSource.DGImage.ImageLayout.Set(imageLayout);
_dataSource.Capabilities.ICapXResolution.SetValue(150);
_dataSource.Capabilities.ICapYResolution.SetValue(150);
if (_cancel)
{
e.CancelAll = true;
}
}
private void Session_TransferReady(object sender, TransferReadyEventArgs e)
{
}
void session_TransferReady(object sender, TransferReadyEventArgs e)
{
}
/// <summary>
/// Performs the TWAIN transfer routine at state 6.
/// </summary>
public static void DoTransferRoutine(ITwainSessionInternal session)
{
#region get xfer types
bool xferImage = true; // default to always xfer image
bool xferAudio = false;
DataGroups xferGroup = DataGroups.None;
XferMech imgXferMech = XferMech.Native;
XferMech audXferMech = XferMech.Native;
if (session.DGControl.XferGroup.Get(ref xferGroup) == ReturnCode.Success)
{
xferAudio = (xferGroup & DataGroups.Audio) == DataGroups.Audio;
// check for Plustek OpticSlim 2680H, this scanner returns wrong xferGroup after first scanning
if (session.CurrentSource.Identity.ProductName.IndexOf("Plustek", StringComparison.OrdinalIgnoreCase) > -1 &&
session.CurrentSource.Identity.ProductName.IndexOf("OpticSlim", StringComparison.OrdinalIgnoreCase) > -1 &&
session.CurrentSource.Identity.ProductName.IndexOf("2680H", StringComparison.OrdinalIgnoreCase) > -1)
{
xferImage = true;
}
else
{
xferImage = xferGroup == DataGroups.None || (xferGroup & DataGroups.Image) == DataGroups.Image;
}
}
// some DS end up getting none but we will assume it's image
if (xferImage)
{
imgXferMech = session.CurrentSource.Capabilities.ICapXferMech.GetCurrent();
}
if (xferAudio)
{
var mech = session.CurrentSource.Capabilities.ACapXferMech.GetCurrent();
}
#endregion
var pending = new TWPendingXfers();
var rc = session.DGControl.PendingXfers.Get(pending);
if (rc == ReturnCode.Success)
{
do
{
#region raise xfer ready
var preXferArgs = new TransferReadyEventArgs(session.CurrentSource, pending.Count, pending.EndOfJob);;
session.SafeSyncableRaiseEvent(preXferArgs);
#endregion
#region actually handle xfer
if (preXferArgs.CancelAll || session.CloseDSRequested)
{
rc = session.DGControl.PendingXfers.Reset(pending);
}
else
{
if (!preXferArgs.CancelCurrent)
{
if (xferImage)
{
switch (imgXferMech)
{
case XferMech.Memory:
rc = DoImageMemoryXfer(session);
break;
case XferMech.File:
rc = DoImageFileXfer(session);
break;
case XferMech.MemFile:
rc = DoImageMemoryFileXfer(session);
break;
case XferMech.Native:
default: // always assume native
rc = DoImageNativeXfer(session);
break;
}
}
if (xferAudio)
{
switch (audXferMech)
{
case XferMech.File:
rc = DoAudioFileXfer(session);
break;
case XferMech.Native:
default: // always assume native
rc = DoAudioNativeXfer(session);
break;
}
}
}
if (rc != ReturnCode.Success && session.StopOnTransferError)
{
// end xfer without setting rc to exit (good/bad?)
session.DGControl.PendingXfers.Reset(pending);
}
else
{
rc = session.DGControl.PendingXfers.EndXfer(pending);
}
}
#endregion
} while (rc == ReturnCode.Success && pending.Count != 0 && !session.CloseDSRequested);
}
else
{
HandleReturnCode(session, rc);
}
// some poorly written scanner drivers return failure on EndXfer so also check for pending count now.
// this may break with other sources but we'll see
if (//pending.Count == 0 &&
session.State > 5)
{
session.ChangeState(5, true);
session.DisableSource();
}
}
