From 8fe76d7b70d2d4b646f493c4a630b78d0bc53dd6 Mon Sep 17 00:00:00 2001
From: moshferatu <gitea@steveharris.sh>
Date: Tue, 7 May 2024 06:48:18 -0700
Subject: [PATCH] Add Refresh Rate indicator

---
 indicators/RefreshRate.cs | 148 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 148 insertions(+)
 create mode 100644 indicators/RefreshRate.cs

diff --git a/indicators/RefreshRate.cs b/indicators/RefreshRate.cs
new file mode 100644
index 0000000..9ed48a2
--- /dev/null
+++ b/indicators/RefreshRate.cs
@@ -0,0 +1,148 @@
+#region Using declarations
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Xml.Serialization;
+using NinjaTrader.Cbi;
+using NinjaTrader.Gui;
+using NinjaTrader.Gui.Chart;
+using NinjaTrader.Gui.SuperDom;
+using NinjaTrader.Gui.Tools;
+using NinjaTrader.Data;
+using NinjaTrader.NinjaScript;
+using NinjaTrader.Core.FloatingPoint;
+using NinjaTrader.NinjaScript.DrawingTools;
+#endregion
+
+//This namespace holds Indicators in this folder and is required. Do not change it. 
+namespace NinjaTrader.NinjaScript.Indicators
+{
+    public class RefreshRate : Indicator
+    {
+        private const long TicksInMillisecond = 10000;
+        
+        private bool IsRefreshing;
+        private long PreviousFrame;
+        
+        protected override void OnStateChange()
+        {
+            if (State == State.SetDefaults)
+            {
+                Description = @"Refreshes the chart on every incoming tick or market depth update according to the desired refresh rate";
+                Name = "Refresh Rate";
+                Calculate = Calculate.OnEachTick;
+                IsChartOnly = true;
+                IsOverlay = true;
+                DisplayInDataBox = false;
+                ScaleJustification = ScaleJustification.Right;
+                IsSuspendedWhileInactive = true;
+                RefreshRateMilliseconds = 0;
+            }
+        }
+
+        protected override void OnMarketDepth(MarketDepthEventArgs marketDepthUpdate)
+        {
+            RefreshChart();
+        }
+
+        protected override void OnBarUpdate()
+        {
+            RefreshChart();
+        }
+
+        private void RefreshChart()
+        {
+            if (IsRefreshing || ChartControl == null || State == State.Historical)
+                return;
+
+            if (RefreshRateMilliseconds > 0)
+            {
+                long currentFrame = DateTime.Now.Ticks / (TicksInMillisecond * RefreshRateMilliseconds);
+                if (currentFrame == PreviousFrame)
+                    return;
+                PreviousFrame = currentFrame;
+            }
+
+            IsRefreshing = true;
+            ChartControl.Dispatcher.InvokeAsync(() => {
+                ChartControl.InvalidateVisual();
+                IsRefreshing = false;
+            });
+        }
+
+        public override string DisplayName
+        {
+            get { return Name; }
+        }
+
+        [NinjaScriptProperty]
+        [Range(0, int.MaxValue)]
+        [Display(Name = "Refresh Rate (Ms)", Description = "Number of milliseconds to wait between chart refreshes (0 for no waiting)", Order = 1, GroupName = "Refresh Rate")]
+        public int RefreshRateMilliseconds
+        { get; set; }
+    }
+}
+
+#region NinjaScript generated code. Neither change nor remove.
+
+namespace NinjaTrader.NinjaScript.Indicators
+{
+    public partial class Indicator : NinjaTrader.Gui.NinjaScript.IndicatorRenderBase
+    {
+        private RefreshRate[] cacheRefreshRate;
+        public RefreshRate RefreshRate(int refreshRateMilliseconds)
+        {
+            return RefreshRate(Input, refreshRateMilliseconds);
+        }
+
+        public RefreshRate RefreshRate(ISeries<double> input, int refreshRateMilliseconds)
+        {
+            if (cacheRefreshRate != null)
+                for (int idx = 0; idx < cacheRefreshRate.Length; idx++)
+                    if (cacheRefreshRate[idx] != null && cacheRefreshRate[idx].RefreshRateMilliseconds == refreshRateMilliseconds && cacheRefreshRate[idx].EqualsInput(input))
+                        return cacheRefreshRate[idx];
+            return CacheIndicator<RefreshRate>(new RefreshRate(){ RefreshRateMilliseconds = refreshRateMilliseconds }, input, ref cacheRefreshRate);
+        }
+    }
+}
+
+namespace NinjaTrader.NinjaScript.MarketAnalyzerColumns
+{
+    public partial class MarketAnalyzerColumn : MarketAnalyzerColumnBase
+    {
+        public Indicators.RefreshRate RefreshRate(int refreshRateMilliseconds)
+        {
+            return indicator.RefreshRate(Input, refreshRateMilliseconds);
+        }
+
+        public Indicators.RefreshRate RefreshRate(ISeries<double> input , int refreshRateMilliseconds)
+        {
+            return indicator.RefreshRate(input, refreshRateMilliseconds);
+        }
+    }
+}
+
+namespace NinjaTrader.NinjaScript.Strategies
+{
+    public partial class Strategy : NinjaTrader.Gui.NinjaScript.StrategyRenderBase
+    {
+        public Indicators.RefreshRate RefreshRate(int refreshRateMilliseconds)
+        {
+            return indicator.RefreshRate(Input, refreshRateMilliseconds);
+        }
+
+        public Indicators.RefreshRate RefreshRate(ISeries<double> input , int refreshRateMilliseconds)
+        {
+            return indicator.RefreshRate(input, refreshRateMilliseconds);
+        }
+    }
+}
+
+#endregion