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Transfer logic tweaks for #42

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soukoku
2015-03-27 07:30:37 -04:00
parent abd3c9c65c
commit 1700e183c7
4 changed files with 101 additions and 62 deletions
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50
src/NTwain/TransferReadyEventArgs.cs
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@@ -11,18 +11,24 @@ namespace NTwain
/// <summary>
/// Initializes a new instance of the <see cref="TransferReadyEventArgs"/> class.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="pendingCount">The pending count.</param>
/// <param name="endOfJob">if set to <c>true</c> [end of job].</param>
/// <param name="imageInfo">The image information.</param>
/// <param name="audioInfo">The audio information.</param>
public TransferReadyEventArgs(int pendingCount, bool endOfJob, TWImageInfo imageInfo, TWAudioInfo audioInfo)
/// <param name="endOfJob">if set to <c>true</c> then it's the end of job.</param>
public TransferReadyEventArgs(DataSource source, int pendingCount, bool endOfJob)
{
DataSource = source;
PendingTransferCount = pendingCount;
EndOfJob = endOfJob;
PendingImageInfo = imageInfo;
AudioInfo = audioInfo;
}
/// <summary>
/// Gets the data source.
/// </summary>
/// <value>
/// The data source.
/// </value>
public DataSource DataSource { get; private set; }
/// <summary>
/// Gets or sets a value indicating whether the current transfer should be canceled
/// and continue next transfer if there are more data.
@@ -49,6 +55,7 @@ namespace NTwain
/// <value>The pending count.</value>
public int PendingTransferCount { get; private set; }
TWImageInfo _imgInfo;
/// <summary>
/// Gets the tentative image information for the current transfer if applicable.
/// This may differ from the final image depending on the transfer mode used (mostly when doing mem xfer).
@@ -56,15 +63,42 @@ namespace NTwain
/// <value>
/// The image info.
/// </value>
public TWImageInfo PendingImageInfo { get; private set; }
public TWImageInfo PendingImageInfo
{
get
{
if (_imgInfo == null)
{
if (DataSource.DGImage.ImageInfo.Get(out _imgInfo) != ReturnCode.Success)
{
_imgInfo = null;
}
}
return _imgInfo;
}
}
TWAudioInfo _audInfo;
/// <summary>
/// Gets the audio information for the current transfer if applicable.
/// </summary>
/// <value>
/// The audio information.
/// </value>
public TWAudioInfo AudioInfo { get; private set; }
public TWAudioInfo AudioInfo
{
get
{
if (_audInfo == null)
{
if (DataSource.DGAudio.AudioInfo.Get(out _audInfo) != ReturnCode.Success)
{
_audInfo = null;
}
}
return _audInfo;
}
}
}
}