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Added metrics triplet.

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This commit is contained in:
Eugene Wang 2018-11-18 12:30:59 -05:00
parent 1e8f47346d
commit 1ee5668ff1
11 changed files with 136 additions and 5 deletions
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2
src/NTwain/Data/TwainTypes.cs
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@ -423,7 +423,7 @@ namespace NTwain.Data
[StructLayout(LayoutKind.Sequential, Pack = 2)]
partial struct TW_METRICS
{
TW_UINT32 _sizeOf;
internal TW_UINT32 SizeOf;
TW_UINT32 _imageCount;
TW_UINT32 _sheetCount;
}

4
src/NTwain/Data/TwainTypesExtended.cs
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@ -1937,10 +1937,6 @@ namespace NTwain.Data
/// </summary>
public partial struct TW_METRICS
{
/// <summary>
/// Set by the application. Specifies the number of bytes in the structure
/// </summary>
public uint SizeOf => _sizeOf;
/// <summary>
/// The number of images made available for transfer by the driver. This is not
/// necessarily the same as the number of images actually transferred, since the

23
src/NTwain/Threading/ThreadDispatcher.cs Normal file
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@ -0,0 +1,23 @@
//using System;
//using System.Collections.Generic;
//using System.Linq;
//using System.Text;
//using System.Threading;
//namespace NTwain.Threading
//{
// /// <summary>
// /// A base thread-marshalling class that does no marshalling.
// /// </summary>
// public class ThreadDispatcher
// {
// /// <summary>
// /// Invokes an action and returns after it's done.
// /// </summary>
// /// <param name="action"></param>
// public virtual void Invoke(Action action)
// {
// action(); SynchronizationContext.Current
// }
// }
//}

52
src/NTwain/Triplets/Control/Metrics.cs Normal file
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@ -0,0 +1,52 @@
using NTwain.Data;
using NTwain.Internals;
using System.Runtime.InteropServices;
namespace NTwain.Triplets.Control
{
/// <summary>
/// Represents <see cref="DataArgumentType.Metrics"/>.
/// </summary>
public sealed class Metrics : BaseTriplet
{
internal Metrics(TwainSession session) : base(session) { }
/// <summary>
/// Reads information relating to the last time DG_CONTROL / DAT_USERINTERFACE / MSG_ENABLEDS was sent.
/// An application calls this to get final counts after scanning. This is
/// necessary because some metrics cannot be detected during scanning, such as blank images
/// discarded at the very end of a session.
/// </summary>
/// <param name="metrics"></param>
/// <returns></returns>
public ReturnCode Get(ref TW_METRICS metrics)
{
metrics.SizeOf = (uint)Marshal.SizeOf(typeof(TW_METRICS));
if (Is32Bit)
{
if (IsWin)
return NativeMethods.DsmWin32(Session.Config.App32, Session.CurrentSource.Identity32,
DataGroups.Control, DataArgumentType.Metrics, Message.Get, ref metrics);
if (IsLinux)
return NativeMethods.DsmLinux32(Session.Config.App32, Session.CurrentSource.Identity32,
DataGroups.Control, DataArgumentType.Metrics, Message.Get, ref metrics);
if (IsMac)
return NativeMethods.DsmMac32(Session.Config.App32, Session.CurrentSource.Identity32,
DataGroups.Control, DataArgumentType.Metrics, Message.Get, ref metrics);
}
if (IsWin)
return NativeMethods.DsmWin64(Session.Config.App32, Session.CurrentSource.Identity32,
DataGroups.Control, DataArgumentType.Metrics, Message.Get, ref metrics);
if (IsLinux)
return NativeMethods.DsmLinux64(Session.Config.App32, Session.CurrentSource.Identity32,
DataGroups.Control, DataArgumentType.Metrics, Message.Get, ref metrics);
if (IsMac)
return NativeMethods.DsmMac64(Session.Config.App32, Session.CurrentSource.Identity32,
DataGroups.Control, DataArgumentType.Metrics, Message.Get, ref metrics);
return ReturnCode.Failure;
}
}
}

6
src/NTwain/Triplets/DGControl.cs
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@ -86,5 +86,11 @@ namespace NTwain.Triplets
/// Gets the operations defined for DAT_XFERGROUP.
/// </summary>
public XferGroup XferGroup => _xferGroup ?? (_xferGroup = new XferGroup(Session));
Metrics _metrics;
/// <summary>
/// Gets the operations defined for DAT_METRICS.
/// </summary>
public Metrics Metrics => _metrics ?? (_metrics = new Metrics(Session));
}
}

9
src/NTwain/Triplets/NativeMethods.Linux32.cs
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@ -279,5 +279,14 @@ namespace NTwain.Triplets
Message msg,
ref TW_MEMORY data);
[DllImport(LinuxDll, EntryPoint = EntryName)]
public static extern ReturnCode DsmLinux32(
[In, Out]TW_IDENTITY origin,
[In, Out]TW_IDENTITY destination,
DataGroups dg,
DataArgumentType dat,
Message msg,
ref TW_METRICS data);
}
}

9
src/NTwain/Triplets/NativeMethods.Linux64.cs
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@ -279,5 +279,14 @@ namespace NTwain.Triplets
Message msg,
ref TW_MEMORY data);
[DllImport(LinuxDll, EntryPoint = EntryName)]
public static extern ReturnCode DsmLinux64(
[In, Out]TW_IDENTITY origin,
[In, Out]TW_IDENTITY destination,
DataGroups dg,
DataArgumentType dat,
Message msg,
ref TW_METRICS data);
}
}

9
src/NTwain/Triplets/NativeMethods.Mac32.cs
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@ -279,5 +279,14 @@ namespace NTwain.Triplets
Message msg,
ref TW_MEMORY data);
[DllImport(Mac32Dll, EntryPoint = EntryName)]
public static extern ReturnCode DsmMac32(
[In, Out]TW_IDENTITY origin,
[In, Out]TW_IDENTITY destination,
DataGroups dg,
DataArgumentType dat,
Message msg,
ref TW_METRICS data);
}
}

9
src/NTwain/Triplets/NativeMethods.Mac64.cs
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@ -279,5 +279,14 @@ namespace NTwain.Triplets
Message msg,
ref TW_MEMORY data);
[DllImport(Mac64Dll, EntryPoint = EntryName)]
public static extern ReturnCode DsmMac64(
[In, Out]TW_IDENTITY origin,
[In, Out]TW_IDENTITY destination,
DataGroups dg,
DataArgumentType dat,
Message msg,
ref TW_METRICS data);
}
}

9
src/NTwain/Triplets/NativeMethods.Win32.cs
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@ -279,5 +279,14 @@ namespace NTwain.Triplets
Message msg,
ref TW_MEMORY data);
[DllImport(WinDll, EntryPoint = EntryName)]
public static extern ReturnCode DsmWin32(
[In, Out]TW_IDENTITY origin,
[In, Out]TW_IDENTITY destination,
DataGroups dg,
DataArgumentType dat,
Message msg,
ref TW_METRICS data);
}
}

9
src/NTwain/Triplets/NativeMethods.Win64.cs
View File

@ -279,5 +279,14 @@ namespace NTwain.Triplets
Message msg,
ref TW_MEMORY data);
[DllImport(WinDll, EntryPoint = EntryName)]
public static extern ReturnCode DsmWin64(
[In, Out]TW_IDENTITY origin,
[In, Out]TW_IDENTITY destination,
DataGroups dg,
DataArgumentType dat,
Message msg,
ref TW_METRICS data);
}
}