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images/center_image_on_card

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/* $Id: center_image_on_card.java,v 1.6 2014/01/30 14:05:25 rjs Exp $

 * Center image on card:

 * Place an image on an imported PDF card

 *

 * The image will be placed in the center on the imported PDF page and scaled

 * to 80% of the page size. The height of the image will be scaled accordingly

 * so that the picture will stay in ratio.

 *

 * Required software: PDFlib+PDI/PPS 9

 * Required data: PDF document, image file

 */

package com.pdflib.cookbook.pdflib.images;


import com.pdflib.pdflib;

import com.pdflib.PDFlibException;


public class center_image_on_card

{

    public static void main (String argv[])

    {

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

        String searchpath = "../input";

        String outfile = "center_image_on_card.pdf";

        String title = "Center Image on Card";


        pdflib p = null;

        String imagefile = "nesrin.jpg";

        String cardfile = "card.pdf";

        int image, card, cardpage;

        double cardwidth, cardheight;

        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, "") == -1)

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


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

            p.set_info("Title", title + " $Revision: 1.6 $");


            /* Load the image */

            image = p.load_image("auto", imagefile, "");


            if (image == -1)

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


            /* Load the card file */

            card = p.open_pdi_document(cardfile, "");

            if (card == -1)

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


            /* Load the first page of the card file */

            cardpage = p.open_pdi_page(card, 1, "");

            if (cardpage == -1)

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


            /* Query the width and height of the first page of the card */

            cardwidth = p.pcos_get_number(card, "pages[0]/width");

            cardheight = p.pcos_get_number(card, "pages[0]/height");


            /* Create a page with the width and height of the card */

            p.begin_page_ext(0, 0, "width=" + cardwidth + " height=" + cardheight);


            /* Place the card page */

            p.fit_pdi_page(cardpage, 0, 0, "");


            /* Place the image in the center of a box which covers 80% of the card

             * size and starts from 10 percent of the card width and height. Fit

             * the image proportionally into the box so that it will cover 80% of

             * the card size as well.

             */

            p.fit_image(image, cardwidth * 0.1, cardheight * 0.1,

                    "boxsize={" + cardwidth * 0.8 + " " + cardheight * 0.8 +

                    "} position=center fitmethod=meet");


            p.end_page_ext("");

            p.close_image(image);

            p.close_pdi_page(cardpage);

            p.close_pdi_document(card);

            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);

        }

    }

}