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MACD histogram

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This commit is contained in:
Miha Kralj
2024-10-23 22:04:21 -07:00
parent 7748bdd101
commit 707d81ff72
7 changed files with 235 additions and 120 deletions
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quantower/IndicatorExtensions.cs
+53
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@@ -8,6 +8,12 @@ public enum SourceType
{
Open, High, Low, Close, HL2, OC2, OHL3, HLC3, OHLC4, HLCC4
}
public enum MaType
{
Alma, Dema, Dsma, Dwma, Ema, Epma, Frama, Fwma, Gma, Hma, Hwma, Jma, Kama, Maaf, Mgdi, MMa, Pwma, Rema, Rma, Sinema, Sma, Smma, T3, Tema, Trima, Vidya, Wma, Zlema
}
public static class IndicatorExtensions
{
public static TValue GetInputValue(this Indicator indicator, UpdateArgs args, SourceType source)
@@ -131,6 +137,53 @@ public static class IndicatorExtensions
}
}
}
public static void PaintHistogram(this Indicator indicator, PaintChartEventArgs args, LineSeries series, int warmupPeriod, bool showColdValues = true)
{
if (!series.Visible || indicator.CurrentChart == null)
return;
Graphics gr = args.Graphics;
gr.SmoothingMode = SmoothingMode.AntiAlias;
var mainWindow = indicator.CurrentChart.Windows[args.WindowIndex];
var converter = mainWindow.CoordinatesConverter;
var clientRect = mainWindow.ClientRectangle;
gr.SetClip(clientRect);
DateTime leftTime = new[] { converter.GetTime(clientRect.Left), indicator.HistoricalData.Time(indicator!.Count - 1) }.Max();
DateTime rightTime = new[] { converter.GetTime(clientRect.Right), indicator.HistoricalData.Time(0) }.Min();
int leftIndex = (int)indicator.HistoricalData.GetIndexByTime(leftTime.Ticks) + 1;
int rightIndex = (int)indicator.HistoricalData.GetIndexByTime(rightTime.Ticks);
for (int i = rightIndex; i < leftIndex; i++)
{
int barX = (int)converter.GetChartX(indicator.HistoricalData.Time(i));
int barY = (int)converter.GetChartY(series[i]);
int barY0 = (int)converter.GetChartY(0);
int HistBarWidth = indicator.CurrentChart.BarsWidth - 2;
if (series[i] > 0)
{
using (Brush hist = new SolidBrush(Color.FromArgb(150, 0, 255, 0)))
{
gr.FillRectangle(hist, barX, barY, HistBarWidth, Math.Abs(barY - barY0));
}
}
else
{
using (Brush hist = new SolidBrush(Color.FromArgb(150, 255, 0, 0)))
{
gr.FillRectangle(hist, barX, barY0, HistBarWidth, Math.Abs(barY0 - barY));
}
}
}
}
public static void DrawText(this Indicator indicator, PaintChartEventArgs args, string text)
{
if (indicator.CurrentChart == null)