public PriceMarksModule(View chart, DrawingCanvas MarksCanvas, DrawingCanvas PriceLine) : base(chart)
{
this.MarksCanvas = MarksCanvas;
this.PriceLine = PriceLine;
#region Слои отметок
{
Levels = new MarksLayer(MarksCanvas, PriceLine, RedrawMarks); MarksLayers.Add(Levels);
}
#endregion
}
private void RedrawMarks(MarksLayer Layer)
{
var marksData = new List <RedrawData>();
{ // get redraw data
if (Layer.Marks != null)
{
var pricesMax = (Chart.PricesMin + Chart.PricesDelta) * Chart.TickSize;
foreach (var mark in Layer.Marks)
{
if (mark.Price > Chart.PricesMin * Chart.TickSize && mark.Price < pricesMax)
{
var height = Chart.PriceToHeight(mark.Price);
var ft = new FormattedText
(
mark.Price.ToString(Chart.TickPriceFormat),
CultureInfo.CurrentCulture,
FlowDirection.LeftToRight,
Chart.FontNumeric,
Chart.BaseFontSize,
mark.TextBrush,
VisualTreeHelper.GetDpi(Layer.PriceVisual).PixelsPerDip
);
var linpen = new Pen(mark.LineBrush, mark.LineThikness); linpen.Freeze();
var geopen = new Pen(mark.LineBrush, 2); geopen.Freeze();
var linps = new List <Point>();
if (mark.LineIndent == 0)
{
linps.Add(new Point(0, height));
linps.Add(new Point(4096, height));
}
else
{
double s = 0;
while (s < 4096)
{
linps.Add(new Point(s, height)); s += mark.LineDash;
linps.Add(new Point(s, height)); s += mark.LineIndent;
}
}
var geo = new PathGeometry(new[] { new PathFigure(new Point(0, height),
new[]
{
new LineSegment(new Point(Chart.PriceShift, height + ft.Height / 2), true),
new LineSegment(new Point(Chart.PriceLineWidth - 2, height + ft.Height / 2), true),
new LineSegment(new Point(Chart.PriceLineWidth - 2, height - ft.Height / 2), true),
new LineSegment(new Point(Chart.PriceShift, height - ft.Height / 2), true)
},
true) }); geo.Freeze();
marksData.Add(new RedrawData(
new Point(0, height),
new Point(Chart.ChWidth + 2, height),
ft, mark.MarkFill,
new Point(Chart.PriceShift + 1, height - ft.Height / 2),
linpen, linps, geopen, geo));
}
}
}
} // get redraw data
if (marksData.Count > 0)
{
СlearedSpace = false;
Dispatcher.Invoke(() =>
{
using var dcCH = Layer.ChartVisual.RenderOpen();
using var dcP = Layer.PriceVisual.RenderOpen();
foreach (var rd in marksData)
{
for (int i = 0; i < rd.LinPoints.Count; i += 2)
{
dcCH.DrawLine(rd.Linpen, rd.LinPoints[i], rd.LinPoints[i + 1]);
}
dcP.DrawGeometry(rd.Fill, rd.Geopen, rd.Geo);
dcP.DrawText(rd.Ft, rd.T);
}
});
}
else if (!СlearedSpace)
{
СlearedSpace = true;
Dispatcher.Invoke(() =>
{
Layer.ChartVisual.RenderOpen().Close();
Layer.PriceVisual.RenderOpen().Close();
});
}
}