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 = "../data";

        pdflib p = null;

        /* Required minimum PDFlib version */

        final double requiredversion = 703;

        final String requiredvstr = "7.0.3";

        int id, id2, 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");

            if (p.begin_document("starter_tagged.pdf",

                                        "tagged=true lang=en") == -1) {

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

            }

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

            p.set_info("Title", "starter_tagged $Revision: 1.9 $");

            /* 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("Document",

                    "Title = {Starter sample for Tagged PDF}");

            p.begin_page_ext(0, 0,

                    "width=a4.width height=a4.height taborder=structure");

            p.create_bookmark("Section 1", "");

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

            if (font == -1)

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

            p.setfont(font, 24.0);

            id2 = p.begin_item("H1", "Title = {Introduction}");

            p.show_xy("1 Introduction", 50, 700);

            p.end_item(id2);

            id2 = p.begin_item("P", "Title = {Simple paragraph}");

            p.setfont(font, 12.0);

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

            p.continue_text("which demonstrates basic Tagged PDF features ");

            p.continue_text("for accessibility.");

            p.end_item(id2);

            /*

             * 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_item(id);

            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();

            }

        }

    }

}