Fixing issue with Brushes

[Ludwik]

Hello,
I'm getting following error in lines 23 and 57 "The name 'Brushes' does not exist in the current context". Could you please point me in the direction what I'm doing wrong here?

#region Using declarations
using System;
using NinjaTrader.Gui.Chart;  
using NinjaTrader.NinjaScript;
using NinjaTrader.Data;
using NinjaTrader.Gui.Tools;
using SharpDX;
using SharpDX.DirectWrite;
using NinjaTrader.NinjaScript.DrawingTools;
#endregion

namespace NinjaTrader.NinjaScript.Indicators
{
    public class BarRangeBodyRatio : Indicator
    {
        private SimpleFont textFont;

        protected override void OnStateChange()
        {
            if (State == State.SetDefaults)
            {
                Description = "Displays the ratio of bar range to bar body size in the top right corner.";
                AddPlot(Brushes.Transparent, "Ratio");
            }
            else if (State == State.Configure)
            {
                textFont = new SimpleFont("Arial", 14) { Bold = true };  
            }
        }

        protected override void OnBarUpdate()
        {
            if (CurrentBar < 1)
                return;

            double barRange = High[0] - Low[0];
            double bodySize = Math.Abs(Close[0] - Open[0]);
            double ratio = bodySize > 0 ? barRange / bodySize : 0;

            Values[0][0] = ratio;
        }

        protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
        {
            base.OnRender(chartControl, chartScale);

            if (Bars == null || Bars.Count < 1 || chartControl == null)
                return;

            string text = $"Range/Body: {Values[0][0]:0.00}";

            // Set the position for top-right corner display
            float xPos = chartControl.CanvasRight - 150;  // Position from right edge
            float yPos = 10;  // Position from top

            // Draw text on the chart
            RenderTarget.DrawText(text, textFont, new SharpDX.RectangleF(xPos, yPos, 200, 50), Brushes.Black.ToDxBrush(RenderTarget));
        }
    }
}​

[NinjaTrader_ChelseaB]

Hello Ludwik,

You've removed the necessary default using statements.

Create a new Indicator using the NinjaScript Editor. Copy the default using statements from the top of the script to your original script. The delete the new script.

[Ludwik]

I did that but now I'm getting following error: Here is the code:

#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 BarRangeBodyRatio : Indicator
    {
        private SimpleFont textFont;

        protected override void OnStateChange()
        {
            if (State == State.SetDefaults)
            {
                Description = "Displays the ratio of bar range to bar body size in the top right corner.";
                AddPlot(Brushes.Transparent, "Ratio");
            }
            else if (State == State.Configure)
            {
                textFont = new SimpleFont("Arial", 14) { Bold = true };  
            }
        }

        protected override void OnBarUpdate()
        {
            if (CurrentBar < 1)
                return;

            double barRange = High[0] - Low[0];
            double bodySize = Math.Abs(Close[0] - Open[0]);
            double ratio = bodySize > 0 ? barRange / bodySize : 0;

            Values[0][0] = ratio;
        }

        protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
        {
            base.OnRender(chartControl, chartScale);

            if (Bars == null || Bars.Count < 1 || chartControl == null)
                return;

            string text = $"Range/Body: {Values[0][0]:0.00}";

            // Set the position for top-right corner display
            float xPos = chartControl.CanvasRight - 150;  // Position from right edge
            float yPos = 10;  // Position from top

            // Draw text on the chart
            RenderTarget.DrawText(text, textFont, new SharpDX.RectangleF(xPos, yPos, 200, 50), Brushes.Black.ToDxBrush(RenderTarget));
        }
    }
}​

[NinjaTrader_ChelseaB]

Hello Ludwik,

The textFont variable you have is a SimpleFont object type and not a TextFormat. SimpleFont is used for Drawing tool methods like Draw.Text() but is not used in SharpDX rendering.

RenderTarget.DrawText(string text, TextFormat textFormat, RectangleF layoutRect, Brush defaultForegroundBrush)

https://developer.ninjatrader.com/docs/desktop/sharpdx_direct2d1_rendertarget_drawtext

You will need to supply a SharpDX.DirectWrite.TextFormat to the RenderTarget.DrawText() method.

The SampleCustomRender indicator included with NinjaTrader demonstrates this on lines 250 - 256.