Best way to keep X axis range changes in combination with FitExactly

[kirko7]

Maybe it's a weird request but I hope there's a good way to handle it.

I have a Graph control with X Axis set to Adjuster="FitExactly" and it works beautifully on window initialization.

Thing is, we want to be able to manually adjust X value (by editing the last X value on the Graph X Axis) and keep this value if data is reloaded.  At the monent it's reset due to FitExactly setting.

What would be the best solution for this?

Thank you.

[phansen · Accepted solution]

The simplest approach might be to use a custom RangeAdjuster implementation that uses the current range until FitExactly returns a different value:

    public sealed class CachedRangeAdjuster : RangeAdjuster {
        private IRange previousRange;

        protected override Range<TData> GetAdjustedRangeCore<TData>( RangeAdjusterArgs<TData> args ) {
            Range<TData> exactRange = FitExactly.GetAdjustedRange<TData>( args );

            Range<TData> result;
            if( object.Equals( previousRange, exactRange ) ) {
                result = args.Range;
            }
            else {
                previousRange = exactRange;
                result = exactRange;
            }

            return result;
        }
    }

[kirko7]

Thanks!

Will try once I get back from vacation.