public override Color?GetColor(ITextRunConstructionContext context)
{
Color color;
if (baseBrush.GetBrush(context) is ISolidColorBrush sbrsh)
{
color = sbrsh.Color;
}
else
{
var colorN = this.baseBrush.GetColor(context);
if (colorN.HasValue)
{
color = colorN.Value;
}
else
{
return(fore);
}
}
if (color.A == 0)
{
return(color);
}
var foreMax = Math.Max(fore.R, Math.Max(fore.G, fore.B));
var tgtHsv = new HSV(color);
int newValue = tgtHsv.Value + foreMax;
int newSaturation = tgtHsv.Saturation;
if (newValue > 255)
{
var newSaturation2 = newSaturation - (newValue - 255);
newValue = 255;
var sChRtLm = (color.R >= color.G && color.R >= color.B) ? 0.95f * 0.7f :
(color.G >= color.R && color.G >= color.B) ? 0.95f :
0.95f * 0.5f;
var sChRt = Math.Max(sChRtLm, newSaturation2 / (float)newSaturation);
if (Single.IsInfinity(sChRt))
{
sChRt = sChRtLm;
}
newSaturation = (int)(newSaturation * sChRt);
}
tgtHsv.Value = (byte)newValue;
tgtHsv.Saturation = (byte)newSaturation;
var newColor = tgtHsv.ToColor();
return(newColor);
}
private Color WrapColor(Color color)
{
if (color.A == 0)
{
return(color);
}
var foreMax = Math.Max(fore.R, Math.Max(fore.G, fore.B));
var tgtHsv = new HSV(color);
int newValue = tgtHsv.Value + foreMax;
int newSaturation = tgtHsv.Saturation;
if (newValue > 255)
{
var newSaturation2 = newSaturation - (newValue - 255);
newValue = 255;
var sChRtLm = (color.R >= color.G && color.R >= color.B) ? 0.95f * 0.7f :
(color.G >= color.R && color.G >= color.B) ? 0.95f :
0.95f * 0.5f;
var sChRt = Math.Max(sChRtLm, newSaturation2 / (float)newSaturation);
if (Single.IsInfinity(sChRt))
{
sChRt = sChRtLm;
}
newSaturation = (int)(newSaturation * sChRt);
}
tgtHsv.Value = (byte)newValue;
tgtHsv.Saturation = (byte)newSaturation;
var newColor = tgtHsv.ToColor();
return(newColor);
}