/* $Id: starter_tagged.java,v 1.8 2008/01/15 16:19:58 katja Exp $
 * 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();
            }
        }
    }
}