BackBrushes Visibility

[drmartell]

Suggestions on how to approach toggling the visibility of BackBrushes series?

[NinjaTrader_ChelseaB]

Hello drmartell,

The BackBrush is the color of the chart behind the current bar.

The BackBrushes collection is a series that contains a color for the chart background under each bar on the chart.

http://ninjatrader.com/support/helpGuides/nt8/en-us/backbrushes.htm

Can you clarify what you are trying to do?
Are you wanting to remove the coloring from a bar after it has been set?

For this you could use Reset().

http://ninjatrader.com/support/helpGuides/nt8/en-us/reset.htm

Or you could set the color for that bar to Brushes.Emtpy.

[drmartell]

Thank you yes, and how about restoring it though?

I would like to be able to toggle the visibility of the entire series.

(I understand that the entire series is technically always visible, but I would like to toggle the changes that have been made to the background by an indicator on and off)

[JerryWar]

toggle the opacity between 0 and 100

[drmartell]

OK, I still could use some help with this. The opacity appears to be read only and I haven't had luck creating a BrushSeries to store values for later retrieval.

Perhaps there is another approach.

[JerryWar]

If I remember right you have to create a Clone()
Modify the opacity of the Clone()
freeze the brush and then Swap it back.
I will see if I can find some code where I did this before.
or possibly one of the Ninja support people will chime in with an example.

[drmartell]

I was able to get it working using a string series with these bits:

private Series<string> myBackBrushes;
..

myBackBrushes = new Series<string>(this, MaximumBarsLookBack.Infinite);
..

if (colorCondition)
myBackBrushes[1] = myColor.ToString();
..

"Hiding"
for (int i = 1; i < BackBrushes.Count-1; i++)
{
BackBrushes[i] = Brushes.Transparent;
}
..

"Restoring"
for (int i = 1; i < BackBrushes.Count-1; i++)
{
var converter = new System.Windows.Media.BrushConverter();
var brush = (Brush)converter.ConvertFromString(myBackBrushes[i]);
brush.Freeze();
BackBrushes[i] = brush;
}

Not sure about the necessity of calling Freeze in this case.

[NinjaTrader_ChelseaB]

Hello drmartell,

When the disable is triggered you would need to loop through all bars on the chart and set the BackBrushes[barsAgo index] for that bar either to a brush or Brushes.Empty.

[drmartell]

Hello drmartell,

When the disable is triggered you would need to loop through all bars on the chart and set the BackBrushes[barsAgo index] for that bar either to a brush or Brushes.Empty, or use the Reset() with that bar number.

Thank you, any obvious improvement then to the solution I've come to so far? (above)