/**
* <summary>Gets the color corresponding to the specified components.</summary>
* <param name="components">Color components to convert.</param>
*/
public static DeviceColor Get(PdfArray components)
{
if (components == null)
{
return(null);
}
if (components.Wrapper is DeviceColor wrapped)
{
return(wrapped);
}
switch (components.Count)
{
case 1:
return(DeviceGrayColor.Get(components));
case 3:
return(DeviceRGBColor.Get(components));
case 4:
return(DeviceCMYKColor.Get(components));
default:
return(null);
}
}
public override SKColor GetColor(Color color, double?alpha = null)
{
DeviceCMYKColor spaceColor = (DeviceCMYKColor)color;
/*
* NOTE: This convertion algorithm was from Apache FOP.
*/
//FIXME: verify whether this algorithm is effective (limit checking seems quite ugly to me!).
//float keyCorrection = (float)spaceColor.K;// / 2.5f;
//int r = (int)((1 - Math.Min(1, spaceColor.C + keyCorrection)) * 255); if (r < 0) { r = 0; }
//int g = (int)((1 - Math.Min(1, spaceColor.M + keyCorrection)) * 255); if (g < 0) { g = 0; }
//int b = (int)((1 - Math.Min(1, spaceColor.Y + keyCorrection)) * 255); if (b < 0) { b = 0; }
var r = (int)(255 * (1 - spaceColor.C) * (1 - spaceColor.K));
var g = (int)(255 * (1 - spaceColor.M) * (1 - spaceColor.K));
var b = (int)(255 * (1 - spaceColor.Y) * (1 - spaceColor.K));
var skColor = new SKColor((byte)r, (byte)g, (byte)b);
if (alpha != null)
{
skColor = skColor.WithAlpha((byte)(alpha.Value * 255));
}
return(skColor);
}
