protected override async Task ScanInternal(ScannedImageSource.Concrete source)
{
var op = operationFactory.Create <WiaScanOperation>();
using (CancelToken.Register(op.Cancel))
{
op.Start(ScanProfile, ScanDevice, ScanParams, DialogParent, source);
Invoker.Current.SafeInvoke(() =>
{
if (ScanParams.Modal && !ScanParams.NoUI)
{
operationProgress.ShowModalProgress(op);
}
else
{
operationProgress.ShowBackgroundProgress(op);
}
});
await op.Success;
}
if (op.ScanException != null)
{
op.ScanException.PreserveStackTrace();
throw op.ScanException;
}
}
private OcrOperation StartingOne()
{
OcrOperation op;
bool started = false;
lock (this)
{
if (currentOp == null)
{
currentOp = new OcrOperation(workerTasks);
started = true;
}
op = currentOp;
op.Status.MaxProgress += 1;
}
op.InvokeStatusChanged();
if (started)
{
operationProgress.ShowBackgroundProgress(op);
}
return(op);
}