/// <summary>
/// Retrieves the raw data for the colorspace.
/// </summary>
/// <returns>The raw data from the PdfArray of PdfReference.</returns>
protected virtual IEnumerable<byte> GetRawPalette(PdfItem item)
{
// The palette data is directly imbedded.
if (item.IsArray()) return(GetRawPalette(item as PdfArray));
if (item.IsReference()) return (GetRawPalette(item as PdfReference));
if (item is PdfString pdfString) return new RawEncoding().GetBytes(pdfString.Value);
throw new ArgumentException("The specified palette information was incorrect.", "item");
}
/// <summary>
/// Get's the colorspace name for the specified item.
/// </summary>
/// <param name="colorSpace">The colorspace to inspect.</param>
/// <returns>The PdfName of the specified item.</returns>
private static string GetColorSpaceName(PdfItem colorSpace)
{
if (colorSpace == null) return(null);
if (colorSpace.IsArray()) return (GetColorSpaceName(((PdfArray)colorSpace).Elements[0]));
if (colorSpace.IsName()) return (((PdfName) colorSpace).Value);
if (colorSpace.IsReference()) {
PdfReference reference = (colorSpace as PdfReference);
if (reference != null) {
return (GetColorSpaceName(reference.Value));
}
}
return (null);
}
/// <summary>
/// Retrieves the raw data for the colorspace.
/// </summary>
/// <returns>The raw data from the PdfArray of PdfReference.</returns>
protected virtual IEnumerable <byte> GetRawPalette(PdfItem item)
{
// The palette data is directly imbedded.
if (item.IsArray())
{
return(GetRawPalette(item as PdfArray));
}
if (item.IsReference())
{
return(GetRawPalette(item as PdfReference));
}
throw new ArgumentException("The specified palette information was incorrect.", "item");
}
/// <summary>
/// Get's the colorspace name for the specified item.
/// </summary>
/// <param name="colorSpace">The colorspace to inspect.</param>
/// <returns>The PdfName of the specified item.</returns>
private static string GetColorSpaceName(PdfItem colorSpace)
{
if (colorSpace == null) return(null);
if (colorSpace.IsArray()) return (GetColorSpaceName(((PdfArray)colorSpace).Elements[0]));
if (colorSpace.IsName()) return (((PdfName) colorSpace).Value);
if (colorSpace.IsReference()) {
PdfReference reference = (colorSpace as PdfReference);
if (reference != null) {
return (GetColorSpaceName(reference.Value));
}
}
return (null);
}
/// <summary>
/// Retrieves the raw data for the colorspace.
/// </summary>
/// <returns>The raw data from the PdfArray of PdfReference.</returns>
protected virtual IEnumerable<byte> GetRawPalette(PdfItem item)
{
// The palette data is directly imbedded.
if (item.IsArray()) return(GetRawPalette(item as PdfArray));
if (item.IsReference()) return (GetRawPalette(item as PdfReference));
throw new ArgumentException("The specified palette information was incorrect.", "item");
}
