public void ParseChart(ChartDefinition sourceChart)
{
// Update the title
Name = sourceChart.Name;
// Validate the chart
if (sourceChart.Series.Count == 0)
{
return;
}
// Group series by their Index.
// This index is the index of a chart they need to be drawn upon.
foreach (var sourceSeriesGroup in sourceChart.Series
.OrderByDescending(s => s.Value.Index)
.GroupBy(s => s.Value.Index))
{
// Get the model representing this index
var childModel = Charts.FirstOrDefault(g => g.Index == sourceSeriesGroup.Key);
if (childModel == null)
{
// Build a new model
childModel = new ChartViewModel(sourceSeriesGroup.Key, this);
Charts.Add(childModel);
childModel.Index = sourceSeriesGroup.Key;
// Create Y axis for the series
childModel.YAxesCollection.Add(new Axis
{
// Title is with combined series
Title = string.Join(", ", sourceSeriesGroup.Select(s => s.Value.Name).ToArray()),
Position = AxisPosition.RightTop,
Sections = new SectionsCollection
{
// Horizontal 0 value line
new AxisSection
{
Value = 0,
Stroke = Brushes.Gray,
StrokeThickness = 1
}
}
});
}
// Update the series
foreach (var quantSeries in sourceSeriesGroup
.Select(sg => sg.Value)
.Where(v => v.Values.Count > 0))
{
//var series = childModel.SeriesCollection[seriesIndex];
var series = childModel.SeriesCollection.FirstOrDefault(x => x.Title == quantSeries.Name);
if (series == null)
{
series = _chartParser.BuildSeries(quantSeries);
childModel.SeriesCollection.Add(series);
}
if (!childModel.LastUpdates.ContainsKey(series.Title))
{
childModel.LastUpdates[series.Title] = Instant.MinValue;
}
var updates = quantSeries.Since(childModel.LastUpdates[series.Title]);
_chartParser.UpdateSeries(series, updates);
if (updates.Values.Any())
{
childModel.LastUpdates[series.Title] = updates.Values.Last().X;
}
if (updates.Values.Any() && series.Values.Count == _seriesMaximum)
{
// This series is probably truncated by the LEAN engine. Add warning visual elemeent
var lastValue = updates.Values.Last();
childModel.CreateTruncatedVisuaLElement(0, lastValue.X, lastValue.Y);
_messenger.Send(new LogEntryReceivedMessage(DateTime.Now, $"Series { Name}.{series.Title} is possibly truncated by the LEAN engine", LogItemType.Monitor));
}
}
}
var sourceScrollSeries = sourceChart.Series
.Select(s => s.Value)
.OrderByDescending(s => s.SeriesType == SeriesType.Line)
.ThenByDescending(s => s.SeriesType == SeriesType.Candle)
.First(s => s.Index == 0);
var scrollSeries = (Series)ScrollSeriesCollection.FirstOrDefault();
if (scrollSeries == null && sourceScrollSeries.Values.Any())
{
Zoom.StartPoint = sourceScrollSeries.Values[0].X;
scrollSeries = _chartParser.BuildSeries(sourceScrollSeries);
ScrollSeriesCollection.Add(scrollSeries);
}
if (!LastUpdates.ContainsKey("Scroll"))
{
LastUpdates["Scroll"] = Instant.MinValue;
}
var scrollSeriesUpdates = sourceScrollSeries.Since(LastUpdates["Scroll"]);
if (scrollSeries != null)
{
_chartParser.UpdateSeries(scrollSeries, scrollSeriesUpdates);
if (scrollSeriesUpdates.Values.Any())
{
LastUpdates["Scroll"] = scrollSeriesUpdates.Values.Last().X;
}
}
Zoom.AutoZoom();
}