Drawing In Margin

July 6th, 2009, 11:21 AM

Hello,

The attached partial screenshot of my chart shows the right hand margin with a default width set to 75.

The word "Overbought" in my stochastic plot is drawn there using "DrawTextFixed" - that I know about for this example.

The ECO2New2 has values on the y-axis. I'd like to see a plot with a value in the margin...

I'm trying to find a draw tool that will allow me to draw in the right hand margin with price levels / indicator levels / labels, etc. that will be aligned with a specific y value.

Any help or direction you can give would be much appreciated.
Kirk

July 6th, 2009, 11:43 AM

graphics.DrawString()

Look at the MML code as example if needed, around line 700 ish.

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Big Mike

Mike

July 6th, 2009, 11:24 PM

Here is a static method I use for drawing text.. it chooses the color of text label based on the color of the plot passed the color of the value based on whether it is above/below zero.

You will need to modify it slightly to choose the y value in the way you want, but you may find it useful =)

Code

    public static class Util
    {
        private static StringFormat stringFormat = new StringFormat();
        private static SolidBrush textBrush = new SolidBrush(Color.Black);
        private static System.Drawing.Font textFont = new Font("Arial", 8);
        
        static Util()
        {
            stringFormat.Alignment = StringAlignment.Far;
        }

      public static void drawValueString(NinjaTrader.Indicator.Indicator ind, Graphics graphics, Rectangle bounds, string plotName, int plotNum, DataSeries series, int boxNum)
        {

            int index = -1;
            int bars = ind.CalculateOnBarClose ? (ind.ChartControl.BarsPainted-2) : (ind.ChartControl.BarsPainted-1);

            if (ind.Bars != null)
            {
                index = ((ind.ChartControl.LastBarPainted-ind.ChartControl.BarsPainted)-1)+bars;
                if (ind.ChartControl.ShowBarsRequired || ((index-ind.Displacement) >= ind.BarsRequired))
                {
                    double val = series.Get(index);
                    string s = plotName+": ";
                    StringBuilder str = new StringBuilder();
                    str.Append((Math.Round(val, 3)).ToString());
                    Color valColor = (val > 0) ? Color.YellowGreen : Color.OrangeRed;
                    textBrush.Color = valColor;
                    Brush b = textBrush;
                    if (plotNum == -1)
                    {
                        //do nothing
                    }
                    else if (ind.Plots[plotNum] == null)
                    {
                        s = "Err: Plot Does not exsit!";
                    }
                    else
                    {
                        b = (ind.Plots[plotNum].Pen.Color == Color.Transparent)
                                ? textBrush
                                : ind.Plots[plotNum].Pen.Brush;
                    }
                    graphics.DrawString(s, textFont, b, bounds.X+bounds.Width-37, bounds.Y+bounds.Height-boxNum*20,
                                        stringFormat);
                    graphics.DrawString(str.ToString(), textFont, textBrush, bounds.X+bounds.Width-3,
                                        bounds.Y+bounds.Height-boxNum*20, stringFormat);
                }
            }
        }

}

Here is an example of how its called from indicator

Code

        public override void Plot(Graphics graphics, Rectangle bounds, double min, double max)
        {
            base.Plot(graphics, bounds, min, max);
            
            if (ColorMode > 0)
                drawColorLine(graphics, bounds, min, max, this.Value, this.PenUp, this.PenDown, this.penTurn, false);
            
            if (_drawValues)
            {
                Util.drawValueString(this, graphics, bounds, "Value", 0, Value, 1);
                Util.drawValueString(this, graphics, bounds, "delta", -1, dValue, 2);
                Util.drawValueString(this, graphics, bounds, "alpha", -1, alpha, 3);
                Util.drawValueString(this, graphics, bounds, "beta", -1, beta, 4);
                Util.drawValueString(this, graphics, bounds, "Kv", -1, Kv, 5);
                Util.drawValueString(this, graphics, bounds, "dThreshold", -1, dThreshold, 6);
                Util.drawValueString(this, graphics, bounds, "dAvg", -1, _dAvg[0], 7);
            }
        }

how it looks:

Drawing In Margin

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Drawing In Margin