interchange/starter_tagged

 * Tagged PDF starter:

 * Create document with structure information for reflow and accessibility

 *

 * Required software: PDFlib/PDFlib+PDI/PPS 7.0.3

 * The basic code also works with PDFlib/PDFlib+PDI/PPS 7.0.0-7.0.2, but these

 * versions require the "lang" option in begin_document() or end_document().

 * Required data: none

 */

package com.pdflib.cookbook.pdflib.interchange;

import com.pdflib.pdflib;

import com.pdflib.PDFlibException;

public class starter_tagged

{

    public static void main (String argv[])

    {

    /* This is where the data files are. Adjust as necessary. */

    String searchpath = "../input";

    String outfile = "starter_tagged.pdf";

    String title = "Starter Tagged PDF";

    pdflib p = null;

    /* Required minimum PDFlib version */

    final double requiredversion = 703;

    final String requiredvstr = "7.0.3";

    int id, id_artifact, font;

    try {

        p = new pdflib();

        p.set_parameter("SearchPath", searchpath);

        /* This means we must check return values of load_font() etc. */

        p.set_parameter("errorpolicy", "return");

        /* Check whether the required minimum PDFlib version is available */

        double major = p.get_value("major", 0);

        double minor = p.get_value("minor", 0);

        double revision = p.get_value("revision", 0);

        if (major*100 + minor*10 + revision < requiredversion)

            throw new Exception("Error: PDFlib " + requiredvstr +

                " or above is required");

        /* Start the document in Tagged PDF mode */

        if (p.begin_document(outfile, "tagged=true") == -1)

            throw new Exception("Error: " + p.get_errmsg());

        p.set_info("Creator", "PDFlib Cookbook");

        p.set_info("Title", title + " $Revision: 1.8 $");

        /* Automatically create spaces between chunks of text */

        p.set_parameter("autospace", "true");

        /* open the first structure element as a child of the document

         * structure root (=0)

         */

        id = p.begin_item("P", "Title = {Simple Paragraph}");

        p.begin_page_ext(0, 0, "width=a4.width height=a4.height");

        font = p.load_font("Helvetica", "winansi", "");

        if (font == -1)

        throw new Exception("Error: " + p.get_errmsg());

        p.setfont(font, 24.0);

        p.show_xy("Hello, Tagged PDF!", 50, 700);

        p.continue_text("This PDF has a very simple");

        p.continue_text("document structure.");

        p.end_item(id);

        /* The page number is created as an artifact; it will be

         * ignored when reflowing the page in Acrobat.

         */

        id_artifact = p.begin_item("Artifact", "");

        p.show_xy("Page 1", 250, 100);

        p.end_item(id_artifact);

        p.end_page_ext("");

        p.end_document("");

        } catch (PDFlibException e) {

            System.err.print("PDFlib exception occurred:\n");

            System.err.print("[" + e.get_errnum() + "] " + e.get_apiname() +

                ": " + e.get_errmsg() + "\n");

        } catch (Exception e) {

            System.err.println(e.getMessage());

        } finally {

            if (p != null) {

                p.delete();

            }

        }

    }

}