blocks/duplicate_block

 * Duplicate block:

 * Duplicate a PDFlib block to any number of pages

 *

 * Import a PDF page containing a block and place it with fit_pdi_page() on

 * the first page of the output document. Fill the contained text block with the

 * number of the current page.

 * On subsequent pages, place the imported PDF page with the "blind" option

 * supplied so that the actual page contents will not be placed, but the block

 * can be filled nevertheless. Fill the text block with the number of the

 * respective page.

 *

 * Required software: PPS 7

 * Required data: PDF document containing blocks

 */

package com.pdflib.cookbook.pdflib.blocks;

import com.pdflib.pdflib;

import com.pdflib.PDFlibException;

public class duplicate_block

{

    public static void main (String argv[])

    {

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

    String searchpath = "../input";

    String outfile = "duplicate_block.pdf";

    String title = "Duplicate Block";

    pdflib p = null;

    double width, height;

    String infile = "announcement_blocks.pdf";

    int inpage, indoc;

    /* Name of the block contained on the imported page */

    final String blockname = "page";

    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");

        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: 1.5 $");

        /* Open a PDF containing a block to store the page number */

        indoc = p.open_pdi_document(infile, "");

        if (indoc == -1)

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

        /* Open the first page of the imported document */

        inpage = p.open_pdi_page(indoc, 1, "");

        if (inpage == -1)

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

        /* Get the width and height of the imported page */

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

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

        /* Start the output page with the size given by the imported page */

        p.begin_page_ext(width, height, "");

        /* Place the imported page */

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

        /* Fill the text block with the number of the first page */

        p.fill_textblock(inpage, blockname, "1",

            "encoding=unicode");

        /* Finish page */

        p.end_page_ext("");

        /* -----------------------------------------------

         * Duplicate the block on several subsequent pages

         * -----------------------------------------------

         */

        for (int i = 2; i <= 5; i++)

        {

            /* Start the output page with the size given by the imported page */

            p.begin_page_ext(width, height, "");

            /* Place the imported page on the output page but supply the "blind"

             * option to suppress the actual page contents. The block is

             * available to be filled nevertheless.

             */

            p.fit_pdi_page(inpage, 0, 0, "blind");

            /* Fill the text block with the number of the current page */

            p.fill_textblock(inpage, blockname, String.valueOf(i),

                "encoding=unicode");

            /* Output some descriptive text */

            String optlist = "fontname=Helvetica fontsize=16 encoding=unicode";

            String text = "Page " + i + ": The page number is filled " +

                "in the block duplicated from page 1";

            p.fit_textline(text, 30, 400, optlist);

            /* Finish page */

            p.end_page_ext("");

        }

        p.close_pdi_page(inpage);

        p.end_document("");

        p.close_pdi_document(indoc);

        } 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();

            }

        }

    }

}