/// <summary>Add the spot price to the chart</summary>
public void BuildScene(TradePair pair, ChartControl chart)
{
// Add b2q first, so green is above red
var spot_b2q = pair.SpotPrice[ETradeType.B2Q];
var spot_q2b = pair.SpotPrice[ETradeType.Q2B];
if (spot_b2q != null)
{
var pt0 = chart.ChartToClient(new Point(chart.XAxis.Min, spot_b2q.Value.ToDouble()));
var pt1 = chart.ChartToClient(new Point(chart.XAxis.Max, spot_b2q.Value.ToDouble()));
// Add the line
B2QLine.X1 = pt0.X;
B2QLine.Y1 = pt0.Y;
B2QLine.X2 = pt1.X;
B2QLine.Y2 = pt1.Y;
chart.Overlay.Adopt(B2QLine);
// Add the price label
var pt = chart.TransformToDescendant(chart.YAxisPanel).Transform(pt1);
Canvas.SetLeft(B2QPrice, 0);
Canvas.SetTop(B2QPrice, pt.Y - B2QPrice.RenderSize.Height / 2);
B2QPrice.Text = spot_b2q.Value.ToString(8);
chart.YAxisPanel.Adopt(B2QPrice);
}
else
{
B2QLine.Detach();
B2QPrice.Detach();
}
if (spot_q2b != null)
{
var pt0 = chart.ChartToClient(new Point(chart.XAxis.Min, spot_q2b.Value.ToDouble()));
var pt1 = chart.ChartToClient(new Point(chart.XAxis.Max, spot_q2b.Value.ToDouble()));
// Add the line
Q2BLine.X1 = pt0.X;
Q2BLine.Y1 = pt0.Y;
Q2BLine.X2 = pt1.X;
Q2BLine.Y2 = pt1.Y;
chart.Overlay.Adopt(Q2BLine);
// Add the price label
var pt = chart.TransformToDescendant(chart.YAxisPanel).Transform(pt1);
Canvas.SetLeft(Q2BPrice, 0);
Canvas.SetTop(Q2BPrice, pt.Y - Q2BPrice.RenderSize.Height / 2);
Q2BPrice.Text = spot_q2b.Value.ToString(8);
chart.YAxisPanel.Adopt(Q2BPrice);
}
else
{
Q2BLine.Detach();
Q2BPrice.Detach();
}
}
/// <summary>Update the scene for the given transfers</summary>
public void BuildScene(IEnumerable <IItem> items, IEnumerable <IItem> highlighted, ChartControl chart)
{
var in_scene = items.ToHashSet(0);
var highlight = highlighted?.ToHashSet(0) ?? new HashSet <IItem>();
// Remove all gfx that is no longer in the scene
var remove = m_gfx.Where(kv => !in_scene.Contains(kv.Key)).ToList();
foreach (var gfx in remove)
{
m_gfx.Remove(gfx.Key);
gfx.Value.Dispose();
}
// Add graphics objects for each item in the scene
foreach (var item in items)
{
// Get the associated graphics objects
var gfx = m_gfx.GetOrAdd(item, k => new GfxItem(this, item));
// Update the position
var pt = Position(item);
var s = chart.ChartToClient(pt);
var hl = highlight.Contains(item);
gfx.Update(chart.Overlay, s, hl);
}
}
/// <summary>Display the updating text</summary>
public void BuildScene(bool updating, ChartControl chart)
{
if (updating)
{
var pt = chart.ChartToClient(new Point(chart.XAxis.Max, chart.YAxis.Max));
Canvas.SetLeft(Text, pt.X - Text.RenderSize.Width);
Canvas.SetTop(Text, pt.Y);
chart.Overlay.Adopt(Text);
}
else
{
Text.Detach();
}
}
/// <summary></summary>
public void BuildScene(ChartControl chart)
{
if (Instrument != null && Instrument.Count != 0 && (Instrument.Count - 1.0).Within(chart.XAxis.Range))
{
Label.Text = (Instrument.Latest.CloseTime(Instrument.TimeFrame) - Model.UtcNow).ToPrettyString();
Label.Measure(new Size(1000, 1000));
var pt = chart.ChartToClient(new Point(Instrument.Count - 1, chart.YAxis.Min));
Canvas.SetLeft(Label, pt.X - Label.DesiredSize.Width / 2);
Canvas.SetTop(Label, pt.Y - Label.DesiredSize.Height);
chart.Overlay.Adopt(Label);
}
else
{
Label.Detach();
}
}