PDFlib Cookbook

cookbook

pdfua/starter_pdfua1

Create PDF/UA-1 document with various content types including structure elements, artifacts and interactive elements.

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/*
 * PDF/UA-1 starter:
 * Create PDF/UA-1 document with various content types including structure
 * elements, artifacts, and interactive elements.
 *
 * Required software: PDFlib/PDFlib+PDI/PPS 9
 * Required data: font file, image
 */

package com.pdflib.cookbook.pdflib.pdfua;

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

public class starter_pdfua1 {
    public static void main(String argv[]) {
        /* This is where the data files are. Adjust as necessary. */
        String searchpath = "../input";
        String imagefile = "lionel.jpg";

        pdflib p = null;
        int id, image, font, action;
        String optlist;
        int exitcode = 0;

        try {
            p = new pdflib();
            /*
             * errorpolicy=exception means that the program will stop
             * if one of the API function runs into a problem.
             */
            p.set_option("errorpolicy=exception searchPath={" + searchpath + "}");

            p.begin_document("starter_pdfua1.pdf",
                "pdfua=PDF/UA-1 lang=en " +
                "tag={tagname=Document Title={PDFlib PDF/UA-1 demo}}") ;

            p.set_info("Creator", "starter_pdfua1");
            p.set_info("Title", "PDFlib PDF/UA-1 demo");

            /* Automatically create spaces between chunks of text */
            p.set_option("autospace=true");

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

            p.create_bookmark("PDF/UA-1 demo", "");

            font = p.load_font("NotoSerif-Regular", "unicode", "embedding");

            p.setfont(font, 24.0);

            /* =================== Simple text  ======================== */

            /* Use abbreviated tagging with the "tag" option */
            p.fit_textline("Introduction to Paper Planes",
                50, 700, "tag={tagname=H1 Title={Introduction}} fontsize=24");

            p.fit_textline("Paper planes can be made from any kind of paper.", 
                50, 675, "tag={tagname=P} fontsize=12");

            p.fit_textline("Most paper planes don't have an engine.", 
                50, 650, "tag={tagname=P} fontsize=12");

            /* =================== Interactive Link ======================== */
            /* Open both P and Link elements in a single call */
            id = p.begin_item("P", "tag={tagname=Link Title={Kraxi on the Web}}");

            /* Create visible content which represents the link */
            p.fit_textline("Learn more on the Kraxi website.", 
                50, 625,
                "matchbox={name={kraxi.com}} fontsize=12 " +
                "strokecolor=blue fillcolor=blue underline");

            /* Create URI action */
            action = p.create_action("URI", "url={http://www.kraxi.com}");

            /* Create Link annotation on named matchbox "kraxi.com".
            * This automatically creates an OBJR (object reference) element.
            */
            optlist = "linewidth=0 usematchbox={kraxi.com} " +
                "contents={Link to Kraxi Inc. Web site} " +
                "action={activate=" + Integer.toString(action) + " } ";
            p.create_annotation(0, 0, 0, 0, "Link", optlist);

            /* This closes the Link and P structure elements */
            p.end_item(id);

            /* =================== Image  ======================== */
            /* A grouping element is required as container for Figure and Caption */
            id = p.begin_item("Div", "");
            image = p.load_image("auto", imagefile, "");

            /* The "Placement" attribute is recommended for Figure elements
             * as children of grouping elements such as Div.
             */
            p.fit_image(image, 50, 400,
                "tag={tagname=Figure Placement=Block Alt={Image of Kraxi waiting for customers.}} "+
                "scale=0.5");
            p.close_image(image);
            
            /* Caption text below the image; Caption element follows Figure.
             * Since Caption doesn't allow direct content in PDF 1.7 we create
             * an additional P element.
             */
            p.fit_textline("Kraxi waiting for customers.", 
                50, 375,
                "tag={tagname=Caption tag={tagname=P}} fontsize=12 ");

            p.end_item(id);

            /* =================== Artifact  ======================== */
            p.fit_textline("Page 1", 250, 100,
                "tag={tagname=Artifact} fontsize=12");

            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);
        }
    }
}