public PixelType GetPixelType(ScanSettings scanSettings)
{
switch (scanSettings.Resolution.ColourSetting)
{
case ColourSetting.BlackAndWhite:
return PixelType.BlackAndWhite;
case ColourSetting.GreyScale:
return PixelType.Grey;
case ColourSetting.Colour:
return PixelType.Rgb;
}
throw new NotImplementedException();
}
private void scan_Click(object sender, EventArgs e)
{
Enabled = false;
_settings = new ScanSettings();
_settings.UseDocumentFeeder = useAdfCheckBox.Checked;
_settings.ShowTwainUI = useUICheckBox.Checked;
_settings.ShowProgressIndicatorUI = showProgressIndicatorUICheckBox.Checked;
_settings.UseDuplex = useDuplexCheckBox.Checked;
_settings.Resolution =
blackAndWhiteCheckBox.Checked
? ResolutionSettings.Fax : ResolutionSettings.ColourPhotocopier;
_settings.Area = !checkBoxArea.Checked ? null : AreaSettings;
_settings.ShouldTransferAllPages = true;
_settings.Rotation = new RotationSettings()
{
AutomaticRotate = autoRotateCheckBox.Checked,
AutomaticBorderDetection = autoDetectBorderCheckBox.Checked
};
try
{
_twain.StartScanning(_settings);
}
catch (TwainException ex)
{
MessageBox.Show(ex.Message);
Enabled = true;
}
}
private void scanButton_Click(object sender, RoutedEventArgs e)
{
IsEnabled = false;
_settings = new ScanSettings
{
UseDocumentFeeder = UseAdfCheckBox.IsChecked,
ShowTwainUI = UseUICheckBox.IsChecked ?? false,
ShowProgressIndicatorUI = ShowProgressCheckBox.IsChecked,
UseDuplex = UseDuplexCheckBox.IsChecked,
Resolution = (BlackAndWhiteCheckBox.IsChecked ?? false)
? ResolutionSettings.Fax
: ResolutionSettings.ColourPhotocopier,
Area = !(GrabAreaCheckBox.IsChecked ?? false) ? null : AreaSettings,
ShouldTransferAllPages = true,
Rotation = new RotationSettings
{
AutomaticRotate = AutoRotateCheckBox.IsChecked ?? false,
AutomaticBorderDetection = AutoDetectBorderCheckBox.IsChecked ?? false
}
};
try
{
if (SourceUserSelected.IsChecked == true)
_twain.SelectSource(ManualSource.SelectedItem.ToString());
_twain.StartScanning(_settings);
}
catch (TwainException ex)
{
MessageBox.Show(ex.Message);
}
IsEnabled = true;
}
public bool NegotiateDuplex(ScanSettings scanSettings)
{
if (scanSettings.UseDuplex)
{
var cap = new Capability(Capabilities.Duplex, TwainType.Int16, _applicationId, SourceId);
if ((Duplex)cap.GetBasicValue().Int16Value == Duplex.None)
{
Capability.SetCapability(Capabilities.DuplexEnabled, (short)Duplex.OnePass, _applicationId, SourceId);
return(true);
}
}
return(false);
}
private bool NegotiateArea(ScanSettings scanSettings)
{
var area = scanSettings.Area;
if (area == null)
{
return(false);
}
try
{
var cap = new Capability(Capabilities.IUnits, TwainType.UInt16, _applicationId, SourceId);
if ((Units)cap.GetBasicValue().Int16Value != area.Units)
{
Capability.SetBasicCapability(Capabilities.IUnits, (int)area.Units, TwainType.UInt16, _applicationId, SourceId);
}
}
catch
{
Logger.WriteLog(LOG_LEVEL.LL_SUB_FUNC, "DataSource failed to set Units");
// Do nothing if the data source does not support the requested capability
}
var imageLayout = new ImageLayout
{
Frame = new Frame
{
Left = new Fix32(area.Left),
Top = new Fix32(area.Top),
Right = new Fix32(area.Right),
Bottom = new Fix32(area.Bottom)
}
};
var result = Twain32Native.DsImageLayout(
_applicationId,
SourceId,
DataGroup.Image,
DataArgumentType.ImageLayout,
Message.Set,
imageLayout);
if (result != TwainResult.Success)
{
Logger.WriteLog(LOG_LEVEL.LL_SUB_FUNC, "DataSource failed to set ImageLayout");
// note: 我這裡總是失敗，但是實際上image layout是可以設定成功的，由掃描結果不同來推測。
//throw new TwainException("DsImageLayout.GetDefault error", result);
}
return(true);
}
/// <summary>
/// Negotiates the indicator.
/// </summary>
/// <param name="scanSettings">The scan settings.</param>
public void NegotiateProgressIndicator(ScanSettings scanSettings)
{
try
{
if (scanSettings.ShowProgressIndicatorUI.HasValue)
{
Capability.SetCapability(Capabilities.Indicators, scanSettings.ShowProgressIndicatorUI.Value, _applicationId, SourceId);
}
}
catch
{
// Do nothing if the data source does not support the requested capability
}
}
public void NegotiateDuplex(ScanSettings scanSettings)
{
try
{
if (scanSettings.UseDuplex.HasValue && SupportsDuplex)
{
Capability.SetCapability(Capabilities.DuplexEnabled, scanSettings.UseDuplex.Value, _applicationId, SourceId);
}
}
catch
{
// Do nothing if the data source does not support the requested capability
}
}
/// <summary>
/// Negotiates the automatic border detection capability.
/// </summary>
/// <param name="scanSettings">The scan settings.</param>
public void NegotiateAutomaticBorderDetection(ScanSettings scanSettings)
{
try
{
if (scanSettings.Rotation.AutomaticBorderDetection)
{
Capability.SetCapability(Capabilities.Automaticborderdetection, true, _applicationId, SourceId);
}
}
catch
{
// Do nothing if the data source does not support the requested capability
}
}
public void NegotiateFeeder(ScanSettings scanSettings)
{
if (scanSettings.UseDocumentFeeder)
{
// Enable the document feeder
Capability.SetCapability(Capabilities.FeederEnabled, true, _applicationId, SourceId);
if (!Capability.GetBoolCapability(Capabilities.FeederLoaded, _applicationId, SourceId))
{
throw new FeederEmptyException();
}
Capability.SetCapability(Capabilities.AutoFeed, true, _applicationId, SourceId);
}
}
/// <summary>
/// Negotiates the indicator.
/// </summary>
/// <param name="scanSettings">The scan settings.</param>
public void NegotiateProgressIndicator(ScanSettings scanSettings)
{
try
{
if (scanSettings.ShowProgressIndicatorUI.HasValue)
{
Capability.SetCapability(Capabilities.Indicators, scanSettings.ShowProgressIndicatorUI.Value, _applicationId, SourceId);
}
}
catch
{
Logger.WriteLog(LOG_LEVEL.LL_SUB_FUNC, "DataSource failed to set ProgressIndicator");
// Do nothing if the data source does not support the requested capability
}
}
/// <summary>
/// Negotiates the automatic border detection capability.
/// </summary>
/// <param name="scanSettings">The scan settings.</param>
public void NegotiateAutomaticBorderDetection(ScanSettings scanSettings)
{
try
{
if (scanSettings.Rotation.AutomaticBorderDetection)
{
Capability.SetCapability(Capabilities.Automaticborderdetection, true, _applicationId, SourceId);
}
}
catch
{
Logger.WriteLog(LOG_LEVEL.LL_SUB_FUNC, "DataSource failed to set Automaticborderdetection");
// Do nothing if the data source does not support the requested capability
}
}
/// <summary>
/// Negotiates the size of the page.
/// </summary>
/// <param name="scanSettings">The scan settings.</param>
public void NegotiatePageSize(ScanSettings scanSettings)
{
try
{
var cap = new Capability(Capabilities.Supportedsizes, TwainType.Int16, _applicationId, SourceId);
if ((PageType)cap.GetBasicValue().Int16Value != PageType.UsLetter)
{
Capability.SetBasicCapability(Capabilities.Supportedsizes, (ushort)scanSettings.Page.Size, TwainType.UInt16, _applicationId, SourceId);
}
}
catch
{
// Do nothing if the data source does not support the requested capability
}
}
public void NegotiateDuplex(ScanSettings scanSettings)
{
try
{
if (scanSettings.UseDuplex.HasValue && SupportsDuplex)
{
Capability.SetCapability(Capabilities.DuplexEnabled, scanSettings.UseDuplex.Value, _applicationId, SourceId);
}
}
catch
{
Logger.WriteLog(LOG_LEVEL.LL_SUB_FUNC, "DataSource failed to set UseDuplex");
// Do nothing if the data source does not support the requested capability
}
}
public void NegotiateTransferCount(ScanSettings scanSettings)
{
try
{
scanSettings.TransferCount = Capability.SetCapability(
Capabilities.XferCount,
scanSettings.TransferCount,
_applicationId,
SourceId);
}
catch
{
// Do nothing if the data source does not support the requested capability
}
}
public void NegotiateFeeder(ScanSettings scanSettings)
{
if (scanSettings.UseDocumentFeeder.HasValue)
{
Capability.SetCapability(Capabilities.FeederEnabled, scanSettings.UseDocumentFeeder.Value, _applicationId, SourceId);
}
if (scanSettings.UseAutoFeeder.HasValue)
{
Capability.SetCapability(Capabilities.AutoFeed, scanSettings.UseAutoFeeder == true && scanSettings.UseDocumentFeeder == true, _applicationId, SourceId);
}
if (scanSettings.UseAutoScanCache.HasValue)
{
Capability.SetCapability(Capabilities.AutoScan, scanSettings.UseAutoScanCache.Value, _applicationId, SourceId);
}
}
public void NegotiateTransferCount(ScanSettings scanSettings)
{
try
{
scanSettings.TransferCount = Capability.SetCapability(
Capabilities.XferCount,
scanSettings.TransferCount,
_applicationId,
SourceId);
}
catch
{
// Do nothing if the data source does not support the requested capability
}
}
private bool NegotiateArea(ScanSettings scanSettings)
{
var area = scanSettings.Area;
if (area == null)
{
return(false);
}
try
{
var cap = new Capability(Capabilities.IUnits, TwainType.Int16, _applicationId, SourceId);
if ((Units)cap.GetBasicValue().Int16Value != area.Units)
{
Capability.SetCapability(Capabilities.IUnits, (short)area.Units, _applicationId, SourceId);
}
}
catch
{
// Do nothing if the data source does not support the requested capability
}
var imageLayout = new ImageLayout
{
Frame = new Frame
{
Left = new Fix32(area.Left),
Top = new Fix32(area.Top),
Right = new Fix32(area.Right),
Bottom = new Fix32(area.Bottom)
}
};
var result = Twain32Native.DsImageLayout(
_applicationId,
SourceId,
DataGroup.Image,
DataArgumentType.ImageLayout,
Message.Set,
imageLayout);
if (result != TwainResult.Success)
{
throw new TwainException("DsImageLayout.GetDefault error", result);
}
return(true);
}
/// <summary>
/// Negotiates the size of the page.
/// </summary>
/// <param name="scanSettings">The scan settings.</param>
public void NegotiatePageSize(ScanSettings scanSettings)
{
try
{
var cap = new Capability(Capabilities.Supportedsizes, TwainType.Int16, _applicationId, SourceId);
if ((PageType)cap.GetBasicValue().Int16Value != PageType.UsLetter)
{
Capability.SetBasicCapability(Capabilities.Supportedsizes, (ushort)scanSettings.Page.Size, TwainType.UInt16, _applicationId, SourceId);
}
}
catch
{
Logger.WriteLog(LOG_LEVEL.LL_SUB_FUNC, "DataSource failed to set Page.Size");
// Do nothing if the data source does not support the requested capability
}
}
public bool Open(ScanSettings settings)
{
OpenSource();
NegotiateTransferCount(settings);
NegotiateFeeder(settings);
NegotiateDuplex(settings);
if (settings.Resolution != null)
{
NegotiateColour(settings);
NegotiateResolution(settings);
}
return(Enable(settings));
}
public PixelType GetPixelType(ScanSettings scanSettings)
{
switch (scanSettings.Resolution.ColourSetting)
{
case ColourSetting.BlackAndWhite:
return(PixelType.BlackAndWhite);
case ColourSetting.GreyScale:
return(PixelType.Grey);
case ColourSetting.Colour:
return(PixelType.Rgb);
}
throw new NotImplementedException();
}
public void NegotiateOrientation(ScanSettings scanSettings)
{
// Set orientation (default is portrait)
try
{
var cap = new Capability(Capabilities.Orientation, TwainType.Int16, _applicationId, SourceId);
if ((Orientation)cap.GetBasicValue().Int16Value != Orientation.Default)
{
Capability.SetBasicCapability(Capabilities.Orientation, (ushort)scanSettings.Page.Orientation, TwainType.UInt16, _applicationId, SourceId);
}
}
catch
{
// Do nothing if the data source does not support the requested capability
}
}
public void NegotiateResolution(ScanSettings scanSettings)
{
try
{
if (scanSettings.Resolution.Dpi.HasValue)
{
int dpi = scanSettings.Resolution.Dpi.Value;
Capability.SetBasicCapability(Capabilities.XResolution, dpi, TwainType.Fix32, _applicationId, SourceId);
Capability.SetBasicCapability(Capabilities.YResolution, dpi, TwainType.Fix32, _applicationId, SourceId);
}
}
catch
{
// Do nothing if the data source does not support the requested capability
}
}
public short GetBitDepth(ScanSettings scanSettings)
{
switch (scanSettings.Resolution.ColourSetting)
{
case ColourSetting.BlackAndWhite:
return(1);
case ColourSetting.GreyScale:
return(8);
case ColourSetting.Colour:
return(16);
}
throw new NotImplementedException();
}
public void NegotiateTransferCount(ScanSettings scanSettings)
{
try
{
scanSettings.TransferCount = Capability.SetCapability(
Capabilities.XferCount,
scanSettings.TransferCount,
_applicationId,
SourceId);
}
catch
{
Logger.WriteLog(LOG_LEVEL.LL_SUB_FUNC, "DataSource failed to set TransferCount");
// Do nothing if the data source does not support the requested capability
}
}
public void NegotiateResolution(ScanSettings scanSettings)
{
try
{
if (scanSettings.Resolution.Dpi.HasValue)
{
int dpi = scanSettings.Resolution.Dpi.Value;
Capability.SetBasicCapability(Capabilities.XResolution, dpi, TwainType.Fix32, _applicationId, SourceId);
Capability.SetBasicCapability(Capabilities.YResolution, dpi, TwainType.Fix32, _applicationId, SourceId);
}
}
catch
{
Logger.WriteLog(LOG_LEVEL.LL_SUB_FUNC, "DataSource failed to set Resolution");
// Do nothing if the data source does not support the requested capability
}
}
public bool Open(ScanSettings settings)
{
OpenSource();
CheckDeviceOnline();
if (settings.AbortWhenNoPaperDetectable && !PaperDetectable)
{
throw new FeederEmptyException();
}
// Set whether or not to show progress window
NegotiateProgressIndicator(settings);
NegotiateTransferCount(settings);
NegotiateFeeder(settings);
NegotiateDuplex(settings);
if (settings.UseDocumentFeeder == true &&
settings.Page != null)
{
NegotiatePageSize(settings);
NegotiateOrientation(settings);
}
if (settings.Area != null)
{
NegotiateArea(settings);
}
if (settings.Resolution != null)
{
NegotiateColour(settings);
NegotiateResolution(settings);
}
// Configure automatic rotation and image border detection
if (settings.Rotation != null)
{
NegotiateAutomaticRotate(settings);
NegotiateAutomaticBorderDetection(settings);
}
return(Enable(settings));
}
public void NegotiateFeeder(ScanSettings scanSettings)
{
try
{
if (scanSettings.UseDocumentFeeder.HasValue)
{
Capability.SetCapability(Capabilities.FeederEnabled, scanSettings.UseDocumentFeeder.Value, _applicationId, SourceId);
}
}
catch
{
Logger.WriteLog(LOG_LEVEL.LL_SUB_FUNC, "DataSource failed to set UseDocumentFeeder");
// Do nothing if the data source does not support the requested capability
}
try
{
if (scanSettings.UseAutoFeeder.HasValue)
{
Capability.SetCapability(Capabilities.AutoFeed, scanSettings.UseAutoFeeder == true && scanSettings.UseDocumentFeeder == true, _applicationId, SourceId);
}
}
catch
{
Logger.WriteLog(LOG_LEVEL.LL_SUB_FUNC, "DataSource failed to set UseAutoFeeder");
// Do nothing if the data source does not support the requested capability
}
try
{
if (scanSettings.UseAutoScanCache.HasValue)
{
Capability.SetCapability(Capabilities.AutoScan, scanSettings.UseAutoScanCache.Value, _applicationId, SourceId);
}
}
catch
{
Logger.WriteLog(LOG_LEVEL.LL_SUB_FUNC, "DataSource failed to set UseAutoScanCache");
// Do nothing if the data source does not support the requested capability
}
}
public void NegotiateFeeder(ScanSettings scanSettings)
{
try
{
if (scanSettings.UseDocumentFeeder.HasValue)
{
Capability.SetCapability(Capabilities.FeederEnabled, scanSettings.UseDocumentFeeder.Value, _applicationId, SourceId);
}
}
catch
{
// Do nothing if the data source does not support the requested capability
}
try
{
if (scanSettings.UseAutoFeeder.HasValue)
{
Capability.SetCapability(Capabilities.AutoFeed, scanSettings.UseAutoFeeder == true && scanSettings.UseDocumentFeeder == true, _applicationId, SourceId);
}
}
catch
{
// Do nothing if the data source does not support the requested capability
}
try
{
if (scanSettings.UseAutoScanCache.HasValue)
{
Capability.SetCapability(Capabilities.AutoScan, scanSettings.UseAutoScanCache.Value, _applicationId, SourceId);
}
}
catch
{
// Do nothing if the data source does not support the requested capability
}
}
public void NegotiateFeeder(ScanSettings scanSettings)
{
try
{
if (scanSettings.UseDocumentFeeder.HasValue)
{
Capability.SetCapability(Capabilities.FeederEnabled, scanSettings.UseDocumentFeeder.Value, _applicationId, SourceId);
}
}
catch
{
// Do nothing if the data source does not support the requested capability
}
try
{
if (scanSettings.UseAutoFeeder.HasValue)
{
Capability.SetCapability(Capabilities.AutoFeed, scanSettings.UseAutoFeeder == true && scanSettings.UseDocumentFeeder == true, _applicationId, SourceId);
}
}
catch
{
// Do nothing if the data source does not support the requested capability
}
try
{
if (scanSettings.UseAutoScanCache.HasValue)
{
Capability.SetCapability(Capabilities.AutoScan, scanSettings.UseAutoScanCache.Value, _applicationId, SourceId);
}
}
catch
{
// Do nothing if the data source does not support the requested capability
}
}
public bool Enable(ScanSettings settings)
{
UserInterface ui = new UserInterface();
ui.ShowUI = (short)(settings.ShowTwainUI ? 1 : 0);
ui.ModalUI = 1;
ui.ParentHand = _messageHook.WindowHandle;
var result = Twain32Native.DsUserInterface(
_applicationId,
SourceId,
DataGroup.Control,
DataArgumentType.UserInterface,
Message.EnableDS,
ui);
if (result != TwainResult.Success)
{
Dispose();
return(false);
}
return(true);
}
/// <summary>
/// 做open→設定各種CAPABILITY→EnableDS→等回傳圖→end
/// </summary>
/// <param name="settings"></param>
public void StartScan(ScanSettings settings)
{
bool scanning = false;
try
{
_messageHook.UseFilter = true;
scanning = DataSource.Open(settings, UseIncrementalMemoryXfer);
}
catch (TwainException e)
{
DataSource.Close();
EndingScan();
throw e;
}
finally
{
// Remove the message hook if scan setup failed
if (!scanning)
{
EndingScan();
}
}
}
public void StartScan(ScanSettings settings)
{
bool scanning = false;
try
{
_messageHook.UseFilter = true;
scanning = DataSource.Open(settings);
}
catch (TwainException e)
{
DataSource.Close();
EndingScan();
throw e;
}
finally
{
// Remove the message hook if scan setup failed
if (!scanning)
{
EndingScan();
}
}
}
public void NegotiateColour(ScanSettings scanSettings)
{
try
{
Capability.SetBasicCapability(Capabilities.IPixelType, (ushort)GetPixelType(scanSettings), TwainType.UInt16, _applicationId, SourceId);
}
catch
{
// Do nothing if the data source does not support the requested capability
}
// TODO: Also set this for colour scanning
try
{
if (scanSettings.Resolution.ColourSetting != ColourSetting.Colour)
{
Capability.SetCapability(Capabilities.BitDepth, GetBitDepth(scanSettings), _applicationId, SourceId);
}
}
catch
{
// Do nothing if the data source does not support the requested capability
}
}
public void NegotiateResolution(ScanSettings scanSettings)
{
if (scanSettings.Resolution.Dpi.HasValue)
{
int dpi = scanSettings.Resolution.Dpi.Value;
Capability.SetBasicCapability(Capabilities.XResolution, dpi, TwainType.Fix32, _applicationId, SourceId);
try
{
Capability.SetBasicCapability(Capabilities.YResolution, dpi, TwainType.Fix32, _applicationId, SourceId);
}
catch (Exception)
{
// some scanners do not support YResolution change
}
}
}
/// <summary>
/// Negotiates the automatic rotation capability.
/// </summary>
/// <param name="scanSettings">The scan settings.</param>
public void NegotiateAutomaticRotate(ScanSettings scanSettings)
{
RotationSettings rotationSettings = scanSettings.Rotation;
Capability.SetCapability(Capabilities.Automaticrotate, rotationSettings.AutomaticRotate, _applicationId, SourceId);
}
public void NegotiateColour(ScanSettings scanSettings)
{
Capability.SetBasicCapability(Capabilities.IPixelType, (ushort)GetPixelType(scanSettings), TwainType.UInt16, _applicationId, SourceId);
// TODO: Also set this for colour scanning
if (scanSettings.Resolution.ColourSetting != ColourSetting.Colour)
{
Capability.SetCapability(Capabilities.BitDepth, GetBitDepth(scanSettings), _applicationId, SourceId);
}
}
private ScanSettings ParseScanSettings(JObject request)
{
log.Debug("create default scan settings");
ScanSettings settings = new ScanSettings();
settings.UseDocumentFeeder = false;
settings.ShowTwainUI = true;
settings.ShowProgressIndicatorUI = true;
settings.UseDuplex = false;
settings.Resolution = ResolutionSettings.ColourPhotocopier;
settings.Area = null;
settings.ShouldTransferAllPages = true;
settings.Rotation = new RotationSettings()
{
AutomaticRotate = false,
AutomaticBorderDetection = false
};
if (request["settings"] != null)
{
log.Debug("parse request scan settings");
if (request["settings"]["UseDocumentFeeder"] != null) settings.UseDocumentFeeder = (bool)request["settings"]["UseDocumentFeeder"];
if (request["settings"]["ShowTwainUI"] != null) settings.ShowTwainUI = (bool)request["settings"]["ShowTwainUI"];
if (request["settings"]["ShowProgressIndicatorUI"] != null) settings.ShowProgressIndicatorUI = (bool)request["settings"]["ShowProgressIndicatorUI"];
if (request["settings"]["UseDuplex"] != null) settings.UseDuplex = (bool)request["settings"]["UseDuplex"];
if (request["settings"]["ShouldTransferAllPages"] != null) settings.ShouldTransferAllPages = (bool)request["settings"]["ShouldTransferAllPages"];
if (request["settings"]["Resolution"] != null)
{
if ((string)request["settings"]["Resolution"] == "Fax") settings.Resolution = ResolutionSettings.Fax;
else if ((string)request["settings"]["Resolution"] == "Photocopier") settings.Resolution = ResolutionSettings.Photocopier;
else if ((string)request["settings"]["Resolution"] == "ColourPhotocopier") settings.Resolution = ResolutionSettings.ColourPhotocopier;
else
{
settings.Resolution = new ResolutionSettings();
if (request["settings"]["Resolution"]["Dpi"] != null) settings.Resolution.Dpi = (int)request["settings"]["Resolution"]["Dpi"];
if (request["settings"]["Resolution"]["ColourSetting"] != null)
{
if ((string)request["settings"]["Resolution"]["ColourSetting"] == "BlackAndWhite") settings.Resolution.ColourSetting = ColourSetting.BlackAndWhite;
else if ((string)request["settings"]["Resolution"]["ColourSetting"] == "Colour") settings.Resolution.ColourSetting = ColourSetting.Colour;
else if ((string)request["settings"]["Resolution"]["ColourSetting"] == "GreyScale") settings.Resolution.ColourSetting = ColourSetting.GreyScale;
else throw new ScanSettingsException("Invalid Resolution.ColourSetting setting.");
}
}
}
if (request["settings"]["Area"] != null)
{
if (request["settings"]["Area"]["units"] == null) throw new ScanSettingsException("Units setting is required in Area.");
if (request["settings"]["Area"]["top"] == null) throw new ScanSettingsException("Top setting is required in Area.");
if (request["settings"]["Area"]["left"] == null) throw new ScanSettingsException("Left setting is required in Area.");
if (request["settings"]["Area"]["bottom"] == null) throw new ScanSettingsException("Bottom setting is required in Area.");
if (request["settings"]["Area"]["right"] == null) throw new ScanSettingsException("Right setting is required in Area.");
Units units;
if ((string)request["settings"]["Area"]["units"] == "Centimeters") units = Units.Centimeters;
else if ((string)request["settings"]["Area"]["units"] == "Inches") units = Units.Inches;
else if ((string)request["settings"]["Area"]["units"] == "Millimeters") units = Units.Millimeters;
else if ((string)request["settings"]["Area"]["units"] == "Picas") units = Units.Picas;
else if ((string)request["settings"]["Area"]["units"] == "Pixels") units = Units.Pixels;
else if ((string)request["settings"]["Area"]["units"] == "Points") units = Units.Points;
else if ((string)request["settings"]["Area"]["units"] == "Twips") units = Units.Twips;
else throw new ScanSettingsException("Invalid Area.units setting.");
float top, left, bottom, right;
top = (float)request["settings"]["Area"]["top"];
left = (float)request["settings"]["Area"]["left"];
bottom = (float)request["settings"]["Area"]["bottom"];
right = (float)request["settings"]["Area"]["right"];
settings.Area = new AreaSettings(units, top, left, bottom, right);
}
if (request["settings"]["Rotation"] != null)
{
settings.Rotation = new RotationSettings();
if (request["settings"]["Rotation"]["AutomaticBorderDetection"] != null) settings.Rotation.AutomaticBorderDetection = (bool)request["settings"]["Rotation"]["AutomaticBorderDetection"];
if (request["settings"]["Rotation"]["AutomaticDeskew"] != null) settings.Rotation.AutomaticDeskew = (bool)request["settings"]["Rotation"]["AutomaticDeskew"];
if (request["settings"]["Rotation"]["AutomaticRotate"] != null) settings.Rotation.AutomaticRotate = (bool)request["settings"]["Rotation"]["AutomaticRotate"];
if (request["settings"]["Rotation"]["FlipSideRotation"] != null)
{
if ((string)request["settings"]["Rotation"]["FlipSideRotation"] == "Book") settings.Rotation.FlipSideRotation = FlipRotation.Book;
else if ((string)request["settings"]["Rotation"]["FlipSideRotation"] == "FanFold") settings.Rotation.FlipSideRotation = FlipRotation.FanFold;
else throw new ScanSettingsException("Invalid Rotation.FlipSideRotation setting.");
}
}
}
return settings;
}
public void NegotiateResolution(ScanSettings scanSettings)
{
if (scanSettings.Resolution.Dpi.HasValue)
{
int dpi = scanSettings.Resolution.Dpi.Value;
Capability.SetBasicCapability(Capabilities.XResolution, dpi, TwainType.Fix32, _applicationId, SourceId);
Capability.SetBasicCapability(Capabilities.YResolution, dpi, TwainType.Fix32, _applicationId, SourceId);
}
}
/// <summary>
/// Negotiates the size of the page.
/// </summary>
/// <param name="scanSettings">The scan settings.</param>
public void NegotiatePageSize(ScanSettings scanSettings)
{
var cap = new Capability(Capabilities.Supportedsizes, TwainType.Int16, _applicationId, SourceId);
if ((PageType)cap.GetBasicValue().Int16Value != PageType.UsLetter)
{
Capability.SetBasicCapability(Capabilities.Supportedsizes, (ushort)scanSettings.Page.Size, TwainType.UInt16, _applicationId, SourceId);
}
}
private void ScanTwainFixedSize()
{
AreaSettings AreaSettings = new AreaSettings(Units.Centimeters, 0f, 0f, 29.7f, 21.01f);
ScanSettings _settings = new ScanSettings();
ResolutionSettings rs = new ResolutionSettings();
rs.ColourSetting = ColourSetting.GreyScale;
rs.Dpi = 100;
_settings.Resolution = rs;
_settings.ShowTwainUI = false;
_settings.ShowProgressIndicatorUI = true;
_settings.Area = AreaSettings;
_twain.StartScanning(_settings);
}
private static ScanSettings CreateDefaultSettings(int dpi, ColourSetting colour, bool adf)
{
ScanSettings scanSettings = new ScanSettings
{
ShowTwainUI = false,
Resolution = new ResolutionSettings(),
AbortWhenNoPaperDetectable = adf,
ShouldTransferAllPages = adf,
UseAutoFeeder = adf,
UseDocumentFeeder = adf
};
scanSettings.Resolution.ColourSetting = colour;
scanSettings.Resolution.Dpi = dpi;
return scanSettings;
}
/// <summary>
/// Starts scanning.
/// </summary>
public void StartScanning(ScanSettings settings)
{
_dataSourceManager.StartScan(settings);
}
/// <summary>
/// Negotiates the automatic rotation capability.
/// </summary>
/// <param name="scanSettings">The scan settings.</param>
public void NegotiateAutomaticRotate(ScanSettings scanSettings)
{
if (scanSettings.Rotation.AutomaticRotate)
{
Capability.SetCapability(Capabilities.Automaticrotate, true, _applicationId, SourceId);
}
}
private bool NegotiateArea(ScanSettings scanSettings)
{
var area = scanSettings.Area;
if (area == null)
{
return false;
}
var cap = new Capability(Capabilities.IUnits, TwainType.Int16, _applicationId, SourceId);
if ((Units)cap.GetBasicValue().Int16Value != area.Units)
{
Capability.SetCapability(Capabilities.IUnits, (short)area.Units, _applicationId, SourceId);
}
var imageLayout = new ImageLayout
{
Frame = new Frame
{
Left = new Fix32(area.Left),
Top = new Fix32(area.Top),
Right = new Fix32(area.Right),
Bottom = new Fix32(area.Bottom)
}
};
var result = Twain32Native.DsImageLayout(
_applicationId,
SourceId,
DataGroup.Image,
DataArgumentType.ImageLayout,
Message.Set,
imageLayout);
if (result != TwainResult.Success)
{
throw new TwainException("DsImageLayout.GetDefault error", result);
}
return true;
}
public bool Open(ScanSettings settings)
{
OpenSource();
if (settings.AbortWhenNoPaperDetectable && !PaperDetectable)
throw new FeederEmptyException();
// Set whether or not to show progress window
NegotiateProgressIndicator(settings);
NegotiateTransferCount(settings);
NegotiateFeeder(settings);
NegotiateDuplex(settings);
if (settings.UseDocumentFeeder == true &&
settings.Page != null)
{
NegotiatePageSize(settings);
NegotiateOrientation(settings);
}
if (settings.Resolution != null)
{
NegotiateColour(settings);
NegotiateResolution(settings);
}
if (settings.Area != null)
{
NegotiateArea(settings);
}
// Configure automatic rotation and image border detection
if (settings.Rotation != null)
{
NegotiateAutomaticRotate(settings);
NegotiateAutomaticBorderDetection(settings);
}
return Enable(settings);
}
public void NegotiateTransferCount(ScanSettings scanSettings)
{
scanSettings.TransferCount = Capability.SetCapability(
Capabilities.XferCount,
scanSettings.TransferCount,
_applicationId,
SourceId);
}
/// <summary>
/// Negotiates the automatic border detection capability.
/// </summary>
/// <param name="scanSettings">The scan settings.</param>
public void NegotiateAutomaticBorderDetection(ScanSettings scanSettings)
{
RotationSettings rotationSettings = scanSettings.Rotation;
Capability.SetCapability(Capabilities.Automaticborderdetection, rotationSettings.AutomaticBorderDetection, _applicationId, SourceId);
}
/// <summary>
/// Negotiates the automatic border detection capability.
/// </summary>
/// <param name="scanSettings">The scan settings.</param>
public void NegotiateAutomaticBorderDetection(ScanSettings scanSettings)
{
try
{
if (scanSettings.Rotation.AutomaticBorderDetection)
{
Capability.SetCapability(Capabilities.Automaticborderdetection, true, _applicationId, SourceId);
}
}
catch
{
// Do nothing if the data source does not support the requested capability
}
}
/// <summary>
/// Negotiates the automatic border detection capability.
/// </summary>
/// <param name="scanSettings">The scan settings.</param>
public void NegotiateAutomaticBorderDetection(ScanSettings scanSettings)
{
if (scanSettings.Rotation.AutomaticBorderDetection)
{
Capability.SetCapability(Capabilities.Automaticborderdetection, true, _applicationId, SourceId);
}
}
/// <summary>
/// Negotiates the indicator.
/// </summary>
/// <param name="scanSettings">The scan settings.</param>
public void NegotiateProgressIndicator(ScanSettings scanSettings)
{
if (scanSettings.ShowProgressIndicatorUI.HasValue)
{
Capability.SetCapability(Capabilities.Indicators, scanSettings.ShowProgressIndicatorUI.Value, _applicationId, SourceId);
}
}
private void ScanTwainA4()
{
ScanSettings _settings = new ScanSettings();
ResolutionSettings rs = new ResolutionSettings();
rs.ColourSetting = ColourSetting.GreyScale;
rs.Dpi = 100;
_settings.Resolution = rs;
_settings.ShowTwainUI = false;
_settings.ShowProgressIndicatorUI = true;
PageSettings ps = new PageSettings();
ps.Orientation = TwainDotNet.TwainNative.Orientation.Portrait;
ps.Size = PageType.MaxSize;
_settings.Page = ps;
_twain.StartScanning(_settings);
}
public short GetBitDepth(ScanSettings scanSettings)
{
switch (scanSettings.Resolution.ColourSetting)
{
case ColourSetting.BlackAndWhite:
return 1;
case ColourSetting.GreyScale:
return 8;
case ColourSetting.Colour:
return 16;
}
throw new NotImplementedException();
}
/// <summary>
/// Negotiates the indicator.
/// </summary>
/// <param name="scanSettings">The scan settings.</param>
public void NegotiateProgressIndicator(ScanSettings scanSettings)
{
try
{
if (scanSettings.ShowProgressIndicatorUI.HasValue)
{
Capability.SetCapability(Capabilities.Indicators, scanSettings.ShowProgressIndicatorUI.Value, _applicationId, SourceId);
}
}
catch
{
// Do nothing if the data source does not support the requested capability
}
}
public bool Enable(ScanSettings settings)
{
UserInterface ui = new UserInterface();
ui.ShowUI = (short)(settings.ShowTwainUI ? 1 : 0);
ui.ModalUI = 1;
ui.ParentHand = _messageHook.WindowHandle;
var result = Twain32Native.DsUserInterface(
_applicationId,
SourceId,
DataGroup.Control,
DataArgumentType.UserInterface,
Message.EnableDS,
ui);
if (result != TwainResult.Success)
{
Dispose();
return false;
}
return true;
}
private bool NegotiateArea(ScanSettings scanSettings)
{
var area = scanSettings.Area;
if (area == null)
{
return(false);
}
try
{
var cap = new Capability(Capabilities.IUnits, TwainType.Int16, _applicationId, SourceId);
if ((Units)cap.GetBasicValue().Int16Value != area.Units)
{
Capability.SetCapability(Capabilities.IUnits, (short)area.Units, _applicationId, SourceId);
}
}
catch
{
// Do nothing if the data source does not support the requested capability
return(false);
}
float right;
float bottom;
float physicalHeight = 0;
var physicalHeightCap = Capability.GetCapability(Capabilities.PhysicalHeight, _applicationId, SourceId);
if (physicalHeightCap != null && physicalHeightCap.Count == 1)
{
physicalHeight = ValueConverter.ConvertToFix32(physicalHeightCap[0]);
}
float physicalWidth = 0;
var physicalWidthCap = Capability.GetCapability(Capabilities.PhysicalWidth, _applicationId, SourceId);
if (physicalWidthCap != null && physicalWidthCap.Count == 1)
{
physicalWidth = ValueConverter.ConvertToFix32(physicalWidthCap[0]);
}
right = physicalWidth < area.Right ? physicalWidth : area.Right;
bottom = physicalHeight < area.Bottom ? physicalHeight : area.Bottom;
var imageLayout = new ImageLayout
{
Frame = new Frame
{
Left = new Fix32(area.Left),
Top = new Fix32(area.Top),
Right = new Fix32(right),
Bottom = new Fix32(bottom)
}
};
var result = Twain32Native.DsImageLayout(
_applicationId,
SourceId,
DataGroup.Image,
DataArgumentType.ImageLayout,
Message.Set,
imageLayout);
if (result != TwainResult.Success && result != TwainResult.CheckStatus)
{
var condition = DataSourceManager.GetConditionCode(_applicationId, SourceId);
return(false);
//throw new TwainException("DsImageLayout.GetDefault error", result, condition);
}
return(true);
}
/// <summary>
/// Starts scanning.
/// </summary>
public void StartScanning(ScanSettings settings)
{
_dataSourceManager.StartScan(settings);
}
public void NegotiateFeeder(ScanSettings scanSettings)
{
if (scanSettings.UseDocumentFeeder.HasValue)
{
Capability.SetCapability(Capabilities.FeederEnabled, scanSettings.UseDocumentFeeder.Value, _applicationId, SourceId);
}
if (scanSettings.UseAutoFeeder.HasValue)
{
Capability.SetCapability(Capabilities.AutoFeed, scanSettings.UseAutoFeeder == true && scanSettings.UseDocumentFeeder == true, _applicationId, SourceId);
}
if (scanSettings.UseAutoScanCache.HasValue)
{
Capability.SetCapability(Capabilities.AutoScan, scanSettings.UseAutoScanCache.Value, _applicationId, SourceId);
}
}
public void NegotiateDuplex(ScanSettings scanSettings)
{
if (scanSettings.UseDuplex.HasValue && SupportsDuplex)
{
Capability.SetCapability(Capabilities.DuplexEnabled, scanSettings.UseDuplex.Value, _applicationId, SourceId);
}
}
/// <summary>
/// Starts scanning.
/// </summary>
public bool StartScanning(ScanSettings settings, object extTag)
{
return(_dataSourceManager.StartScan(settings, extTag));
}
public void NegotiateOrientation(ScanSettings scanSettings)
{
// Set orientation (default is portrait)
var cap = new Capability(Capabilities.Orientation, TwainType.Int16, _applicationId, SourceId);
if ((Orientation)cap.GetBasicValue().Int16Value != Orientation.Default)
{
Capability.SetBasicCapability(Capabilities.Orientation, (ushort)scanSettings.Page.Orientation, TwainType.UInt16, _applicationId, SourceId);
}
}
