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Added support for getting ext image info during data transfer event.

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soukoku
2014-10-31 18:20:13 -04:00
parent 57d7dbe0ef
commit e19c2ad490
12 changed files with 182 additions and 116 deletions
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63
NTwain/DataTransferredEventArgs.cs
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@@ -1,5 +1,7 @@
using NTwain.Data;
using System;
using System.Collections.Generic;
using System.Linq;
namespace NTwain
{
@@ -9,32 +11,38 @@ namespace NTwain
public class DataTransferredEventArgs : EventArgs
{
/// <summary>
/// Initializes a new instance of the <see cref="DataTransferredEventArgs"/> class.
/// Initializes a new instance of the <see cref="DataTransferredEventArgs" /> class.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="nativeData">The native data.</param>
/// <param name="imageInfo">The image information.</param>
public DataTransferredEventArgs(IntPtr nativeData, TWImageInfo imageInfo)
public DataTransferredEventArgs(DataSource source, IntPtr nativeData, TWImageInfo imageInfo)
{
DataSource = source;
NativeData = nativeData;
ImageInfo = imageInfo;
}
/// <summary>
/// Initializes a new instance of the <see cref="DataTransferredEventArgs"/> class.
/// Initializes a new instance of the <see cref="DataTransferredEventArgs" /> class.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="fileDataPath">The file data path.</param>
/// <param name="imageInfo">The image information.</param>
public DataTransferredEventArgs(string fileDataPath, TWImageInfo imageInfo)
public DataTransferredEventArgs(DataSource source, string fileDataPath, TWImageInfo imageInfo)
{
DataSource = source;
FileDataPath = fileDataPath;
ImageInfo = imageInfo;
}
/// <summary>
/// Initializes a new instance of the <see cref="DataTransferredEventArgs"/> class.
/// Initializes a new instance of the <see cref="DataTransferredEventArgs" /> class.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="memoryData">The memory data.</param>
/// <param name="imageInfo">The image information.</param>
public DataTransferredEventArgs(byte[] memoryData, TWImageInfo imageInfo)
public DataTransferredEventArgs(DataSource source, byte[] memoryData, TWImageInfo imageInfo)
{
DataSource = source;
MemoryData = memoryData;
ImageInfo = imageInfo;
}
@@ -76,12 +84,41 @@ namespace NTwain
/// </value>
public TWImageInfo ImageInfo { get; private set; }
///// <summary>
///// Gets the extended image information if applicable.
///// </summary>
///// <value>
///// The extended image information.
///// </value>
//public TWExtImageInfo ExImageInfo { get; internal set; }
/// <summary>
/// Gets the data source.
/// </summary>
/// <value>
/// The data source.
/// </value>
public DataSource DataSource { get; private set; }
/// <summary>
/// Gets the extended image information if applicable.
/// </summary>
/// <param name="infoIds">The information ids.</param>
/// <returns></returns>
/// <exception cref="System.InvalidOperationException"></exception>
public IEnumerable<TWInfo> GetExtImageInfo(params ExtendedImageInfo[] infoIds)
{
if (infoIds != null && infoIds.Length > 0 && DataSource.SupportedCaps.Contains(CapabilityId.ICapExtImageInfo))
{
var request = new TWExtImageInfo { NumInfos = (uint)infoIds.Length };
if (infoIds.Length > request.Info.Length)
{
throw new InvalidOperationException(string.Format("Info ID array excdd maximum length of {0}.", request.Info.Length));
}
for (int i = 0; i < infoIds.Length; i++)
{
request.Info[i].InfoID = infoIds[i];
}
if (DataSource.DGImage.ExtImageInfo.Get(request) == ReturnCode.Success)
{
return request.Info.Where(it => it.InfoID != ExtendedImageInfo.Invalid);
}
}
return Enumerable.Empty<TWInfo>();
}
}
}