/// <summary>
/// OnDone has to be called when the whole data have been read.
/// </summary>
/// <remarks>
/// The previous mark is sent to the handler if necessary.
/// </remarks>
/// <param name="handler">The Wang annotation handler.</param>
/// <param name="propertiesCurrent">The current properties.</param>
private static bool OnDone(IWangAnnotationHandler handler, WangAnnotationProperties propertiesCurrent)
{
if (propertiesCurrent.HasMarkAttributes)
{
return(WangAnnotationTranslator.Send(handler, propertiesCurrent));
}
return(true);
}
/// <summary>
/// OnNewMark has to be called when a new mark starts.
/// </summary>
/// <remarks>
/// The previous mark is sent to the handler and the properties are initialized with default properties and the mark attributes.
/// </remarks>
/// <param name="handler">The Wang annotation handler.</param>
/// <param name="propertiesCurrent">The current properties.</param>
/// <param name="stream">The stream to read the data in.</param>
/// <param name="dataSize">The size of the block.</param>
/// <param name="propertiesDefault">The default properties.</param>
/// <returns>true if the operation succeeded otherwise returns false.</returns>
private static bool OnNewMark(IWangAnnotationHandler handler, WangAnnotationProperties propertiesCurrent,
IWangStream stream, int dataSize, WangAnnotationProperties propertiesDefault)
{
if (propertiesCurrent.HasMarkAttributes && !WangAnnotationTranslator.Send(handler, propertiesCurrent))
{
return(false);
}
propertiesCurrent.CopyFrom(propertiesDefault);
WangMarkAttributes markAttributes = WangAnnotationStructureReader.ReadMarkAttributes(stream, dataSize);
if (markAttributes == null)
{
return(false);
}
propertiesCurrent.SetMarkAttributes(markAttributes);
return(true);
}