ninjatrader/indicators/Trend.cs

#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 Trend : Indicator
    {
        protected override void OnStateChange()
        {
            if (State == State.SetDefaults)
            {
                Description = @"Colors bars based on closes above previous highs or below previous lows";
                Name = "Trend";
                Calculate = Calculate.OnPriceChange;
                IsOverlay = true;
                DisplayInDataBox = true;
                DrawOnPricePanel = true;
                DrawHorizontalGridLines = true;
                DrawVerticalGridLines = true;
                PaintPriceMarkers = true;
                ScaleJustification = ScaleJustification.Right;
                IsSuspendedWhileInactive = true;
                UptrendColor = Brushes.LimeGreen;
                DowntrendColor = Brushes.Red;
            }
        }

        protected override void OnBarUpdate()
        {
            if (CurrentBar < 2)
                return;

            if (IsFirstTickOfBar)
            {
                double previousHigh = High[2];
                double previousLow = Low[2];
                double currentClose = Close[1];

                if (currentClose > previousHigh)
                {
                    BarBrushes[0] = UptrendColor;
                    CandleOutlineBrushes[0] = UptrendColor;
                }
                else if (currentClose < previousLow)
                {
                    BarBrushes[0] = DowntrendColor;
                    CandleOutlineBrushes[0] = DowntrendColor;
                }
                else
                {
                    BarBrushes[0] = BarBrushes[1];
                    CandleOutlineBrushes[0] = CandleOutlineBrushes[1];
                }
            }
        }

        public override string DisplayName
        {
            get { return Name; }
        }

        [NinjaScriptProperty]
        [XmlIgnore]
        [Display(Name = "Uptrend Color", GroupName = "Trend", Order = 1)]
        public Brush UptrendColor { get; set; }

        [Browsable(false)]
        public string UptrendColorSerialization
        {
            get { return Serialize.BrushToString(UptrendColor); }
            set { UptrendColor = Serialize.StringToBrush(value); }
        }

        [NinjaScriptProperty]
        [XmlIgnore]
        [Display(Name = "Downtrend Color", GroupName = "Trend", Order = 2)]
        public Brush DowntrendColor { get; set; }

        [Browsable(false)]
        public string DowntrendColorSerialization
        {
            get { return Serialize.BrushToString(DowntrendColor); }
            set { DowntrendColor = Serialize.StringToBrush(value); }
        }
    }
}

#region NinjaScript generated code. Neither change nor remove.

namespace NinjaTrader.NinjaScript.Indicators
{
    public partial class Indicator : NinjaTrader.Gui.NinjaScript.IndicatorRenderBase
    {
        private Trend[] cacheTrend;
        public Trend Trend(Brush uptrendColor, Brush downtrendColor)
        {
            return Trend(Input, uptrendColor, downtrendColor);
        }

        public Trend Trend(ISeries<double> input, Brush uptrendColor, Brush downtrendColor)
        {
            if (cacheTrend != null)
                for (int idx = 0; idx < cacheTrend.Length; idx++)
                    if (cacheTrend[idx] != null && cacheTrend[idx].UptrendColor == uptrendColor && cacheTrend[idx].DowntrendColor == downtrendColor && cacheTrend[idx].EqualsInput(input))
                        return cacheTrend[idx];
            return CacheIndicator<Trend>(new Trend(){ UptrendColor = uptrendColor, DowntrendColor = downtrendColor }, input, ref cacheTrend);
        }
    }
}

namespace NinjaTrader.NinjaScript.MarketAnalyzerColumns
{
    public partial class MarketAnalyzerColumn : MarketAnalyzerColumnBase
    {
        public Indicators.Trend Trend(Brush uptrendColor, Brush downtrendColor)
        {
            return indicator.Trend(Input, uptrendColor, downtrendColor);
        }

        public Indicators.Trend Trend(ISeries<double> input , Brush uptrendColor, Brush downtrendColor)
        {
            return indicator.Trend(input, uptrendColor, downtrendColor);
        }
    }
}

namespace NinjaTrader.NinjaScript.Strategies
{
    public partial class Strategy : NinjaTrader.Gui.NinjaScript.StrategyRenderBase
    {
        public Indicators.Trend Trend(Brush uptrendColor, Brush downtrendColor)
        {
            return indicator.Trend(Input, uptrendColor, downtrendColor);
        }

        public Indicators.Trend Trend(ISeries<double> input , Brush uptrendColor, Brush downtrendColor)
        {
            return indicator.Trend(input, uptrendColor, downtrendColor);
        }
    }
}

#endregion