internal Color?GetColor(iText.Kernel.Colors.Color colorPfd, float alpha)
{
var value = colorPfd.GetColorValue();
switch (colorPfd)
{
case CalGray calGray:
case DeviceGray deviceGray:
return(FromGray(value[0], alpha));
case CalRgb calRgb:
case DeviceRgb deviceRgb:
return(FromRGB(value[0], value[1], value[2], alpha));
case DeviceCmyk deviceCmyk:
return(FromCmyk(value[0], value[1], value[2], value[3], alpha));
case IccBased iccBased:
var colorSpace = colorPfd.GetColorSpace();
var source = ((PdfArray)colorSpace.GetPdfObject()).GetAsStream(1);
var alt = source.GetAsName(PdfName.Alternate);
if (Equals(alt, PdfName.CalGray) || Equals(alt, PdfName.DeviceGray))
{
return(FromGray(value[0], alpha));
}
if (Equals(alt, PdfName.CalRGB) || Equals(alt, PdfName.DeviceRGB))
{
return(FromRGB(value[0], value[1], value[2], alpha));
}
if (Equals(alt, PdfName.DeviceCMYK))
{
return(FromCmyk(value[0], value[1], value[2], value[3], alpha));
}
return(FromUnkown(colorPfd, alpha));
case PatternColor patternColor:
var pattern = patternColor.GetPattern();
return(PatternColorManager.GetColor(pattern, alpha));
case DeviceN deviceN:
case Indexed indexed:
case Lab lab:
case Separation separation:
default:
return(FromUnkown(colorPfd, alpha));
}
}
private Color?FromUnkown(iText.Kernel.Colors.Color colorPfd, float alpha)
{
var value = colorPfd.GetColorValue();
switch (colorPfd.GetNumberOfComponents())
{
case 0:
return(null);
case 1:
return(FromGray(value[0], alpha));
case 3:
return(FromRGB(value[0], value[1], value[2], alpha));
case 4:
return(FromCmyk(value[0], value[1], value[2], value[3], alpha));
default: return(null);
}
}
