public static PdfArray GetMKColor(Color color)
{
PdfArray array = new PdfArray();
int type = ExtendedColor.GetType(color);
switch (type)
{
case ExtendedColor.TYPE_GRAY: {
array.Add(new PdfNumber(((GrayColor)color).Gray));
break;
}
case ExtendedColor.TYPE_CMYK: {
CMYKColor cmyk = (CMYKColor)color;
array.Add(new PdfNumber(cmyk.Cyan));
array.Add(new PdfNumber(cmyk.Magenta));
array.Add(new PdfNumber(cmyk.Yellow));
array.Add(new PdfNumber(cmyk.Black));
break;
}
case ExtendedColor.TYPE_SEPARATION:
case ExtendedColor.TYPE_PATTERN:
case ExtendedColor.TYPE_SHADING:
throw new Exception("Separations, patterns and shadings are not allowed in MK dictionary.");
default:
array.Add(new PdfNumber(color.R / 255f));
array.Add(new PdfNumber(color.G / 255f));
array.Add(new PdfNumber(color.B / 255f));
break;
}
return(array);
}
public static float[] GetColorArray(Color color)
{
int type = ExtendedColor.GetType(color);
switch (type)
{
case ExtendedColor.TYPE_GRAY: {
return(new float[] { ((GrayColor)color).Gray });
}
case ExtendedColor.TYPE_CMYK: {
CMYKColor cmyk = (CMYKColor)color;
return(new float[] { cmyk.Cyan, cmyk.Magenta, cmyk.Yellow, cmyk.Black });
}
case ExtendedColor.TYPE_SEPARATION: {
return(new float[] { ((SpotColor)color).Tint });
}
case ExtendedColor.TYPE_RGB: {
return(new float[] { color.R / 255f, color.G / 255f, color.B / 255f });
}
}
ThrowColorSpaceError();
return(null);
}
public static void CheckCompatibleColors(Color c1, Color c2)
{
int type1 = ExtendedColor.GetType(c1);
int type2 = ExtendedColor.GetType(c2);
if (type1 != type2)
{
throw new ArgumentException("Both colors must be of the same type.");
}
if (type1 == ExtendedColor.TYPE_SEPARATION && ((SpotColor)c1).PdfSpotColor != ((SpotColor)c2).PdfSpotColor)
{
throw new ArgumentException("The spot color must be the same, only the tint can vary.");
}
if (type1 == ExtendedColor.TYPE_PATTERN || type1 == ExtendedColor.TYPE_SHADING)
{
ThrowColorSpaceError();
}
}
protected void SetColorSpace(Color color)
{
cspace = color;
int type = ExtendedColor.GetType(color);
PdfObject colorSpace = null;
switch (type)
{
case ExtendedColor.TYPE_GRAY: {
colorSpace = PdfName.DEVICEGRAY;
break;
}
case ExtendedColor.TYPE_CMYK: {
colorSpace = PdfName.DEVICECMYK;
break;
}
case ExtendedColor.TYPE_SEPARATION: {
SpotColor spot = (SpotColor)color;
colorDetails = writer.AddSimple(spot.PdfSpotColor);
colorSpace = colorDetails.IndirectReference;
break;
}
case ExtendedColor.TYPE_PATTERN:
case ExtendedColor.TYPE_SHADING: {
ThrowColorSpaceError();
break;
}
default:
colorSpace = PdfName.DEVICERGB;
break;
}
shading.Put(PdfName.COLORSPACE, colorSpace);
}
