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pdfua/tag_parallel_columns

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/* $Id: tag_parallel_columns.java,v 1.3 2014/01/30 14:05:28 rjs Exp $

 * tag_parallel_columns

 *

 * This topic demonstrates how to tag multiple columns in parallel with

 * activate_item(). In order to work around Acrobat problems no direct

 * content should be created after activate_item(), but only new structure

 * elements.

 *

 * Required software: PDFlib/PDFlib+PDI/PPS 9

 * Required data: font

 */

package com.pdflib.cookbook.pdflib.pdfua;


import com.pdflib.pdflib;

import com.pdflib.PDFlibException;


public class tag_parallel_columns {

    public static void main(String argv[]) {

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

        String searchpath = "../input";

        String outfile = "tag_parallel_columns.pdf";

        String title = "Tag parallel columns";


        pdflib p = null;

        int font, x_left = 50, x_right = 350, y1 = 600, y2 = 580;

        int id_sect1, id_sect2;

        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");


            if (p.begin_document(outfile,

                "pdfua=PDF/UA-1 tag={tagname=Document} lang=en") == -1)

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


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

            p.set_info("Title", title + " $Revision: 1.3 $");


            font = p.load_font("DejaVuSerif", "unicode", "embedding");

            if (font == -1)

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


            p.create_bookmark(title, "");


            /* Automatically create spaces between chunks of text */

            p.set_option("autospace=true");


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


            id_sect1 = p.begin_item("Sect", "Title={Left column}");

            p.setfont(font, 12);


            /* Start with a H1 for the left column */

            p.fit_textline("Start of left column...", x_left, y1,

                "tag={tagname=H1} fontsize=18");


            /*

             * Since we keep the first P open we must explicitly designate the

             * root element as parent for the right column.

             */

            id_sect2 = p.begin_item("Sect", "parent=0 Title={Right column}");

            p.fit_textline("Start of right column...", x_right, y1,

                "tag={tagname=H1} fontsize=18");


            /* Return to the left column and add another structure element */

            p.activate_item(id_sect1);

            p.fit_textline("continued", x_left, y2, "tag={tagname=P}");

            p.end_item(id_sect1);


            /* Now return to the right column again and add an element */

            p.activate_item(id_sect2);

            p.fit_textline("also continued", x_right, y2, "tag={tagname=P}");

            p.end_item(id_sect2);


            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");

            exitcode = 1;

        }

        catch (Exception e) {

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

            exitcode = 1;

        }

        finally {

            if (p != null) {

                p.delete();

            }

            System.exit(exitcode);

        }

    }

}