/// <summary>
/// Creates a
/// <see cref="PdfTrapNetworkAnnotation"/>
/// instance.
/// </summary>
/// <remarks>
/// Creates a
/// <see cref="PdfTrapNetworkAnnotation"/>
/// instance. Note that there shall be at most one trap network annotation
/// per page, which shall be the last element in the page’s Annots array.
/// TrapNet annotations are deprecated in PDF 2.0.
/// </remarks>
/// <param name="rect">
/// the annotation rectangle, defining the location of the annotation on the page
/// in default user space units. See
/// <see cref="PdfAnnotation.SetRectangle(iText.Kernel.Pdf.PdfArray)"/>.
/// </param>
/// <param name="appearanceStream">
/// the form XObject defining a trap network which body contains the graphics objects needed
/// to paint the traps making up the trap network. Process colour model shall be defined for the
/// appearance stream (see
/// <see cref="iText.Kernel.Pdf.Xobject.PdfFormXObject.SetProcessColorModel(iText.Kernel.Pdf.PdfName)"/>.
/// See also ISO-320001 Table 367 "Additional entries specific to a trap network appearance stream".
/// </param>
public PdfTrapNetworkAnnotation(Rectangle rect, PdfFormXObject appearanceStream)
: base(rect)
{
if (appearanceStream.GetProcessColorModel() == null)
{
throw new PdfException("Process color model must be set in appearance stream for Trap Network annotation!"
);
}
SetNormalAppearance(appearanceStream.GetPdfObject());
SetFlags(PdfAnnotation.PRINT | PdfAnnotation.READ_ONLY);
}
