PDFlib Cookbook

cookbook

interchange/control_nexpress_trays

For NexPress digital color printing machines, create special annotations to control the input tray.

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/*
 * Control NexPress trays:
 * For NexPress digital color printing machines, create some special kind of
 * annotations to control the input tray.
 * 
 * Use the "custom" option of create_annotation() to create a "Stamp" annotation
 * with NexPress-specific custom extensions.   
 * The "P" in "PDF" means "Portable", which excludes the use of device-specific
 * parameters such as tray control. This technique is not really in the spirit
 * of portable PDF documents, but NexPress digital printing machines expect it
 * this way nevertheless.
 * 
 * Required software: PDFlib/PDFlib+PDI/PPS 9
 * Required data: none
 */
package com.pdflib.cookbook.pdflib.interchange;

import com.pdflib.pdflib;
import com.pdflib.PDFlibException;

public class control_nexpress_trays
{
    public static void main (String argv[])
    {
        /* This is where the data files are. Adjust as necessary. */
        String searchpath = "../input";
        String outfile = "control_nexpress_trays.pdf";
        String title = "Control NexPress trays";

        pdflib p = null;
        int font;
        int exitcode = 0;

        try {
            p = new pdflib();

            p.set_option("searchpath={" + searchpath + "}");

            /* This means we must check return values of load_font() etc. */
            p.set_option("errorpolicy=return");
            
            /* Start the document */
            if (p.begin_document(outfile, "") == -1)
                throw new Exception("Error: " + p.get_errmsg());
            
            /* Set document info entries */
            p.set_info("Creator", "PDFlib Cookbook");
            p.set_info("Title", title);
            
            /* Load font */
            font = p.load_font("Helvetica", "unicode", "");
            if (font == -1)
                throw new Exception("Error: " + p.get_errmsg());

            /* Start page */
            p.begin_page_ext(0, 0, "width=a4.width height=a4.height");
            
            /* Set font */
            p.setfont(font, 12);
            
            /* Output some descriptive text */
            p.fit_textline("Use the \"custom\" option of create_annotation() to " +
                 "create a \"Stamp\" annotation with", 20, 600, "");
            p.fit_textline("NexPress-specific custom extensions in the document.",
                20, 580, "");
            
            /* Create a "Stamp" annotation with NexPress-specific custom 
             * extensions. 
             * Some names which can be used in the "Name" key for tray selection:
             * SubstrateTypeCover, SubstrateTypeInsert,
             * SubstrateTypeInsert1 ... SubstrateTypeInsert9.
             * More details are available in the printer-specific documentation.
             */
            String optlist =
                "custom={{key=Open type=boolean value=false} " +
                "{key=Name type=name value=SubstrateTypeCover} " +
                "{key=Subj type=string value={Cover}}} " +
                "contents={Stamp Annotation for tray selection}";

            p.create_annotation(50, 500, 150, 550, "Stamp", optlist);
            
            p.end_page_ext("");

            p.end_document("");

        } catch (PDFlibException e) {
            System.err.println("PDFlib exception occurred:");
            System.err.println("[" + e.get_errnum() + "] " + e.get_apiname()
                + ": " + e.get_errmsg());
            exitcode = 1;
        } catch (Exception e) {
            System.err.println(e);
            exitcode = 1;
        } finally {
            if (p != null) {
                p.delete();
            }
            System.exit(exitcode);
        }
    }
}