change font size according to bar width

[td_910]

is that possible?

Best regards
Thomas

[NinjaTrader_BrandonH]

Hello Thomas,

Thanks for your post.

Are you referring to changing the font size of the text of a drawing object, such as Draw.Text(), so that the font size is equal to the bar width?

If so, this could be possible by using ChartControl.BarWidth to get the width of the bars and save that value to a double variable.

double barWidth = ChartControl.BarWidth;

Then, you could use the Draw.Text() syntax that allows you to specify a SimpleFont argument. You would use the barWidth variable when specifying the Size of your SimpleFont.

Draw.Text(NinjaScriptBase owner, string tag, bool isAutoScale, string text, int barsAgo, double y, int yPixelOffset, Brush textBrush, SimpleFont font, TextAlignment alignment, Brush outlineBrush, Brush areaBrush, int areaOpacity)

The code might look something like this:

NinjaTrader.Gui.Tools.SimpleFont myFont = new NinjaTrader.Gui.Tools.SimpleFont("Courier New", 12) { Size = barWidth, Bold = true };

Draw.Text(this, "myTag", false, "Hi There!", 0, Low[0], 5, Brushes.Pink, myFont, TextAlignment.Center, Brushes.Transparent, null, 1);

See the help guide documentation below for more information and sample code.

BarWidth: https://ninjatrader.com/support/help...l_barwidth.htm
Draw.Text: https://ninjatrader.com/support/help.../draw_text.htm
SimpleFont: https://ninjatrader.com/support/help...font_class.htm

Let me know if I may assist further.

[td_910]

many thanks, found the error

my code was:
if (ChartControl.BarWidth==2) myFontW.Size = 20;
if (ChartControl.BarWidth==3) myFontW.Size = 30;
if (ChartControl.BarWidth==4) myFontW.Size = 40;

but should have been:
if (ChartControl.BarWidth>1.9) myFontW.Size = 20;
if (ChartControl.BarWidth>2.9) myFontW.Size = 30;
if (ChartControl.BarWidth>3.9) myFontW.Size = 40;

[kashter]

Hi Brandon,
I also wanted to adjust the font text size dynamically with the change in bar width. Tried your suggestion

double barWidth = ChartControl.BarWidth;
NinjaTrader.Gui.Tools.SimpleFont myFont = new NinjaTrader.Gui.Tools.SimpleFont("Courier New", 12) { Size = barWidth, Bold = true };

but keep getting the following error : An object reference is required for the non-static field, method, or property 'NinjaTrader.Gui.Chart.ChartControl.BarWidth.get"

I am not sure what the issue is. Request assistance.

[NinjaTrader_BrandonH]

Hello kashter,

Thanks for your note.

Are you calling this code within the OnBarUpdate() method of an indicator?

Please see the attached example indicator demonstrating how to set the font size of the Draw.Text() method to use the same value as the chart's BarWidth.

Let me know if I may assist further.

[kashter]

Thank you Brandon, much appreciated.