/// <summary>
/// Overrides the default method to write a 4 element array
/// </summary>
/// <param name="writer"></param>
protected override void RenderCustomColorSpace(PDFWriter writer)
{
writer.BeginDictionaryEntry("ColorSpace");
if (null == this.Pallette || this.Pallette.Length == 0)
{
throw new NullReferenceException("Palette");
}
else
{
PDFObjectRef index = writer.BeginObject();
writer.BeginArray();
writer.BeginArrayEntry();
writer.WriteName("Indexed");
writer.EndArrayEntry();
writer.BeginArrayEntry();
ColorSpace cs = this.Pallette[0].ColorSpace;
if (cs == ColorSpace.RGB)
{
writer.WriteName("DeviceRGB");
}
else if (cs == ColorSpace.G)
{
writer.WriteName("DeviceG");
}
else
{
throw new ArgumentOutOfRangeException("Palette[0].ColorSpace");
}
writer.EndArrayEntry();
writer.BeginArrayEntry();
writer.WriteNumber(this.Pallette.Length - 1);//maximum value not number of entries
writer.EndArrayEntry();
//check the stored instance
if (null == _bytestreamdata)
{
_bytestreamdata = GetPaletteString(cs);
}
writer.BeginArrayEntry();
writer.WriteByteString(_bytestreamdata);
writer.EndArrayEntry();
writer.EndArray();
writer.EndObject();
writer.WriteObjectRef(index);
}
writer.EndDictionaryEntry();
}
