public async Task PerformScan(ScanProfile scanProfile, ScanParams scanParams, IWin32Window dialogParent, ISaveNotify notify,
Action <ScannedImage> imageCallback, CancellationToken cancelToken = default)
{
var driver = driverFactory.Create(scanProfile.DriverName);
driver.DialogParent = dialogParent;
driver.ScanProfile = scanProfile;
driver.ScanParams = scanParams;
driver.CancelToken = cancelToken;
try
{
if (scanProfile.Device == null)
{
// The profile has no device specified, so prompt the user to choose one
var device = driver.PromptForDevice();
if (device == null)
{
// User cancelled
return;
}
if (appConfigManager.Config.AlwaysRememberDevice)
{
scanProfile.Device = device;
profileManager.Save();
}
driver.ScanDevice = device;
}
else
{
// The profile has a device specified, so use it
driver.ScanDevice = scanProfile.Device;
}
// Start the scan
int imageCount = 0;
var source = driver.Scan().Then(img => imageCount++);
bool doAutoSave = !scanParams.NoAutoSave && !appConfigManager.Config.DisableAutoSave && scanProfile.EnableAutoSave && scanProfile.AutoSaveSettings != null;
if (doAutoSave)
{
if (scanProfile.AutoSaveSettings.ClearImagesAfterSaving)
{
// Auto save without piping images
var images = await source.ToList();
if (await autoSave.Save(scanProfile.AutoSaveSettings, images, notify))
{
foreach (ScannedImage img in images)
{
img.Dispose();
}
}
else
{
// Fallback in case auto save failed; pipe all the images back at once
foreach (ScannedImage img in images)
{
imageCallback(img);
}
}
}
else
{
// Basic auto save, so keep track of images as we pipe them and try to auto save afterwards
var images = new List <ScannedImage>();
await source.ForEach(scannedImage =>
{
imageCallback(scannedImage);
images.Add(scannedImage);
});
await autoSave.Save(scanProfile.AutoSaveSettings, images, notify);
}
}
else
{
// No auto save, so just pipe images back as we get them
await source.ForEach(imageCallback);
}
if (imageCount > 0)
{
Log.Event(EventType.Scan, new Event
{
Name = MiscResources.Scan,
Pages = imageCount,
DeviceName = scanProfile.Device?.Name,
ProfileName = scanProfile.DisplayName,
BitDepth = scanProfile.BitDepth.Description()
});
}
}
catch (ScanDriverException e)
{
if (e is ScanDriverUnknownException)
{
Log.ErrorException(e.Message, e.InnerException);
errorOutput.DisplayError(e.Message, e);
}
else
{
errorOutput.DisplayError(e.Message);
}
}
}
public void PerformScan(ScanProfile scanProfile, ScanParams scanParams, IWin32Window dialogParent, ISaveNotify notify, Action <ScannedImage> imageCallback)
{
var driver = driverFactory.Create(scanProfile.DriverName);
driver.DialogParent = dialogParent;
driver.ScanProfile = scanProfile;
driver.ScanParams = scanParams;
try
{
if (scanProfile.Device == null)
{
// The profile has no device specified, so prompt the user to choose one
var device = driver.PromptForDevice();
if (device == null)
{
// User cancelled
return;
}
if (appConfigManager.Config.AlwaysRememberDevice)
{
scanProfile.Device = device;
profileManager.Save();
}
driver.ScanDevice = device;
}
else
{
// The profile has a device specified, so use it
driver.ScanDevice = scanProfile.Device;
}
bool doAutoSave = !scanParams.NoAutoSave && !appConfigManager.Config.DisableAutoSave && scanProfile.EnableAutoSave && scanProfile.AutoSaveSettings != null;
if (doAutoSave)
{
if (scanProfile.AutoSaveSettings.ClearImagesAfterSaving)
{
// Auto save without piping images
var images = driver.Scan().ToList();
if (autoSave.Save(scanProfile.AutoSaveSettings, images, notify))
{
foreach (ScannedImage img in images)
{
img.Dispose();
}
}
else
{
// Fallback in case auto save failed; pipe all the images back at once
foreach (ScannedImage img in images)
{
imageCallback(img);
}
}
}
else
{
// Basic auto save, so keep track of images as we pipe them and try to auto save afterwards
var images = new List <ScannedImage>();
foreach (ScannedImage scannedImage in driver.Scan())
{
imageCallback(scannedImage);
images.Add(scannedImage);
}
autoSave.Save(scanProfile.AutoSaveSettings, images, notify);
}
}
else
{
// No auto save, so just pipe images back as we get them
foreach (ScannedImage scannedImage in driver.Scan())
{
imageCallback(scannedImage);
}
}
}
catch (ScanDriverException e)
{
if (e is ScanDriverUnknownException)
{
Log.ErrorException(e.Message, e.InnerException);
errorOutput.DisplayError(e.Message, e);
}
else
{
errorOutput.DisplayError(e.Message);
}
}
}