public static ImageSource GetIcon(IStat stat, string originalValue, string changedValue)
{
if (stat.CompareStrategy == CompareStrategy.NotComparable)
{
return(null);
}
double?difference;
if (stat.BenchmarkThreshold.Type == BenchmarkThresholdType.Relative)
{
difference = stat.GetDifferenceRatio(changedValue, originalValue);
}
else
{
difference = stat.GetDifference(changedValue, originalValue);
}
if (difference == null)
{
return(null);
}
var imageName = "Comparison";
if (stat.CompareStrategy == CompareStrategy.Plain)
{
imageName += "Plain";
}
var differenceLevel = ((int)(difference.Value / stat.BenchmarkThreshold.Value * 4)).Clamp(-3, 3);
imageName += differenceLevel.ToString();
return(s_benchmarkIcons.GetOrCreate(imageName,
() =>
{
var image = (ImageSource)BitmapImageEx.LoadAsFrozen(string.Format("Resources/Images/{0}_16.png", imageName));
return image;
}));
}