/// <summary>
/// Handles the actual graphing.
/// </summary>
/// <param name="work">The work item to graph.</param>
/// <returns>A new <see cref="Graph" />.</returns>
private GraphingResult HandleGraphing(GraphingWorkItem work)
{
if (work.TreeGrapher == null || work.ParseTree == null)
{
return(new GraphingResult());
}
var graph = work.TreeGrapher.CreateGraph(work.ParseTree, work.ParserRules);
graph.LayoutAlgorithmSettings = new SugiyamaLayoutSettings();
return(new GraphingResult(graph, work.ParseTree));
}
/// <inheritdoc />
public void Graph(IParseTreeGrapher grapher, ITree tree, IList <string> parserRules)
{
lock (_Padlock)
{
var nextRun =
CalculateNextRunTime(
_PreviousNodeQty,
_Settings.NodeThresholdCountForThrottling,
_Settings.MillisecondsToDelayPerNodeWhenThrottling,
_Settings.MaximumRenderShortDelay);
var work = new GraphingWorkItem(tree, parserRules, grapher, nextRun);
QueuedWork.Enqueue(work);
_LastQueuedTime = DateTime.Now;
if (GraphingTask.IsCompleted)
{
GraphingTask = new Task(GraphingWorkLoop);
}
if (GraphingTask.Status != TaskStatus.Running)
{
GraphingTask.Start();
}
}
}
