public TentativeStateCommitable(ITwainSessionInternal session, int newState)
{
_session = session;
_origState = session.State;
_newState = newState;
_session.ChangeState(newState, false);
}
internal DGControl(ITwainSessionInternal session)
{
if (session == null)
{
throw new ArgumentNullException("session");
}
_session = session;
}
/// <summary>
/// Initializes a new instance of the <see cref="TripletBase" /> class.
/// </summary>
/// <param name="session">The session.</param>
/// <exception cref="System.ArgumentNullException"></exception>
internal TripletBase(ITwainSessionInternal session)
{
if (session == null)
{
throw new ArgumentNullException("session");
}
Session = session;
}
/// <summary>
/// Verifies the session is within the specified state range (inclusive). Throws
/// <see cref="TwainStateException" /> if violated.
/// </summary>
/// <param name="session">The session.</param>
/// <param name="allowedMinimum">The allowed minimum.</param>
/// <param name="allowedMaximum">The allowed maximum.</param>
/// <param name="group">The triplet data group.</param>
/// <param name="dataArgumentType">The triplet data argument type.</param>
/// <param name="message">The triplet message.</param>
/// <exception cref="TwainStateException"></exception>
public static void VerifyState(this ITwainSessionInternal session, int allowedMinimum, int allowedMaximum, DataGroups group, DataArgumentType dataArgumentType, Message message)
{
if (session.EnforceState && (session.State < allowedMinimum || session.State > allowedMaximum))
{
throw new TwainStateException(session.State, allowedMinimum, allowedMaximum, group, dataArgumentType, message,
string.Format(CultureInfo.InvariantCulture, "TWAIN state {0} does not match required range {1}-{2} for operation {3}-{4}-{5}.",
session.State, allowedMinimum, allowedMaximum, group, dataArgumentType, message));
}
}
private static void HandleReturnCode(ITwainSessionInternal session, ReturnCode rc)
{
switch (rc)
{
case ReturnCode.Success:
case ReturnCode.XferDone:
case ReturnCode.Cancel:
// ok to keep going
break;
default:
var status = session.CurrentSource.GetStatus();
session.SafeSyncableRaiseEvent(new TransferErrorEventArgs(rc, status));
break;
}
}
static ReturnCode DoAudioNativeXfer(ITwainSessionInternal session)
{
IntPtr dataPtr = IntPtr.Zero;
IntPtr lockedPtr = IntPtr.Zero;
ReturnCode xrc = ReturnCode.Failure;
try
{
xrc = session.DGAudio.AudioNativeXfer.Get(ref dataPtr);
if (xrc == ReturnCode.XferDone)
{
session.ChangeState(7, true);
if (dataPtr != IntPtr.Zero)
{
lockedPtr = PlatformInfo.Current.MemoryManager.Lock(dataPtr);
}
session.SafeSyncableRaiseEvent(new DataTransferredEventArgs(session.CurrentSource, lockedPtr));
}
else
{
HandleReturnCode(session, xrc);
}
}
catch (Exception ex)
{
session.SafeSyncableRaiseEvent(new TransferErrorEventArgs(ex));
}
finally
{
session.ChangeState(6, true);
// data here is allocated by source so needs to use shared mem calls
if (lockedPtr != IntPtr.Zero)
{
//PlatformInfo.Current.MemoryManager.Unlock(lockedPtr);
PlatformInfo.Current.MemoryManager.Unlock(dataPtr);
lockedPtr = IntPtr.Zero;
}
if (dataPtr != IntPtr.Zero)
{
PlatformInfo.Current.MemoryManager.Free(dataPtr);
dataPtr = IntPtr.Zero;
}
}
return(xrc);
}
DataSource GetSourceInstance(ITwainSessionInternal session, TWIdentity sourceId)
{
DataSource source = null;
PlatformInfo.Current.Log.Debug("Source id = {0}", sourceId.Id);
var key = string.Format(CultureInfo.InvariantCulture, "{0}|{1}|{2}|{3}", sourceId.Id, sourceId.Manufacturer, sourceId.ProductFamily, sourceId.ProductName);
if (_ownedSources.ContainsKey(key))
{
source = _ownedSources[key];
}
else
{
_ownedSources[key] = source = new DataSource(session, sourceId);
}
return(source);
}
static void DoImageXferredEventRoutine(ITwainSessionInternal session, IntPtr dataPtr, TWImageMemXfer memInfo, byte[] memData, string filePath, FileFormat format)
{
DataTransferredEventArgs args = null;
if (dataPtr != IntPtr.Zero)
{
args = new DataTransferredEventArgs(session.CurrentSource, dataPtr);
}
else if (memData != null)
{
args = new DataTransferredEventArgs(session.CurrentSource, memInfo, memData);
}
else
{
args = new DataTransferredEventArgs(session.CurrentSource, filePath, format);
}
session.SafeSyncableRaiseEvent(args);
}
static ReturnCode DoAudioFileXfer(ITwainSessionInternal session)
{
string filePath = null;
TWSetupFileXfer setupInfo;
ReturnCode xrc = session.DGControl.SetupFileXfer.Get(out setupInfo);
if (xrc == ReturnCode.Success)
{
filePath = setupInfo.FileName;
xrc = session.DGAudio.AudioFileXfer.Get();
if (xrc == ReturnCode.XferDone)
{
session.SafeSyncableRaiseEvent(new DataTransferredEventArgs(session.CurrentSource, filePath, (FileFormat)0));
}
else
{
HandleReturnCode(session, xrc);
}
}
return(xrc);
}
static ReturnCode DoImageFileXfer(ITwainSessionInternal session)
{
string filePath = null;
TWSetupFileXfer setupInfo;
if (session.DGControl.SetupFileXfer.Get(out setupInfo) == ReturnCode.Success)
{
filePath = setupInfo.FileName;
}
var xrc = session.DGImage.ImageFileXfer.Get();
if (xrc == ReturnCode.XferDone)
{
DoImageXferredEventRoutine(session, IntPtr.Zero, null, null, filePath, setupInfo.Format);
}
else
{
HandleReturnCode(session, xrc);
}
return(xrc);
}
internal PendingXfers(ITwainSessionInternal session) : base(session)
{
}
internal ExtImageInfo(ITwainSessionInternal session) : base(session)
{
}
internal IccProfile(ITwainSessionInternal session) : base(session)
{
}
internal CustomDSData(ITwainSessionInternal session) : base(session)
{
}
internal Parent(ITwainSessionInternal session) : base(session)
{
}
internal GrayResponse(ITwainSessionInternal session) : base(session)
{
}
internal DeviceEvent(ITwainSessionInternal session) : base(session)
{
}
internal PassThru(ITwainSessionInternal session) : base(session)
{
}
internal Filter(ITwainSessionInternal session) : base(session)
{
}
internal XferGroup(ITwainSessionInternal session) : base(session)
{
}
internal Callback(ITwainSessionInternal session) : base(session)
{
}
internal Palette8(ITwainSessionInternal session) : base(session)
{
}
internal ImageFileXfer(ITwainSessionInternal session) : base(session)
{
}
internal AudioFileXfer(ITwainSessionInternal session) : base(session)
{
}
internal RgbResponse(ITwainSessionInternal session) : base(session)
{
}
internal Status(ITwainSessionInternal session) : base(session)
{
}
internal CapabilityCustom(ITwainSessionInternal session) : base(session)
{
}
internal AudioNativeXfer(ITwainSessionInternal session) : base(session)
{
}
internal Identity(ITwainSessionInternal session) : base(session)
{
}
internal SetupFileXfer(ITwainSessionInternal session) : base(session)
{
}