/// <summary>
/// Raises the <see cref="TransferReady"/> event.
/// </summary>
/// <param name="e"></param>
protected virtual void OnTransferReady(TransferReadyEventArgs e)
{
ExternalInvoke(() =>
{
var handler = TransferReady;
handler?.Invoke(this, e);
});
}
private void DoTransferRoutine()
{
var xMech = GetTransferMechs();
TW_PENDINGXFERS pending = default;
var rc = DGControl.PendingXfers.Get(ref pending);
if (rc == ReturnCode.Success)
{
do
{
var readyArgs = new TransferReadyEventArgs(CurrentSource, pending.Count, pending.EndOfJob)
{
CancelAll = _disableDSNow
};
OnTransferReady(readyArgs);
#region actually handle xfer
if (readyArgs.CancelAll || _disableDSNow)
{
rc = DGControl.PendingXfers.Reset(ref pending);
}
else
{
if (!readyArgs.CancelCurrent)
{
if (xMech.ImageMech.HasValue)
{
switch (xMech.ImageMech.Value)
{
case XferMech.Memory:
rc = DoImageMemoryXfer();
break;
case XferMech.File:
rc = DoImageFileXfer();
break;
case XferMech.MemFile:
rc = DoImageMemoryFileXfer();
break;
case XferMech.Native:
default: // always assume native
rc = DoImageNativeXfer();
break;
}
}
if (xMech.AudioMech.HasValue)
{
switch (xMech.AudioMech.Value)
{
case XferMech.File:
rc = DoAudioFileXfer();
break;
case XferMech.Native:
default: // always assume native
rc = DoAudioNativeXfer();
break;
}
}
}
if (rc != ReturnCode.Success)// && StopOnTransferError)
{
// end xfer without setting rc to exit (good/bad?)
DGControl.PendingXfers.Reset(ref pending);
}
else
{
rc = DGControl.PendingXfers.EndXfer(ref pending);
}
}
#endregion
} while (rc == ReturnCode.Success && pending.Count != 0 && !_disableDSNow);
}
else
{
HandleXferReturnCode(rc);
}
if (_disableDSNow)
{
DGControl.UserInterface.DisableDS(ref _lastEnableUI, false);
}
}
void ITwainSessionInternal.SafeSyncableRaiseEvent(TransferReadyEventArgs e)
{
SafeSyncableRaiseOnEvent(OnTransferReady, TransferReady, e);
}
/// <summary>
/// Called when a data transfer is ready.
/// </summary>
/// <param name="e">The <see cref="TransferReadyEventArgs"/> instance containing the event data.</param>
protected virtual void OnTransferReady(TransferReadyEventArgs e)
{
}