PDFlib Cookbook

cookbook

blocks/duplicate_block

Duplicate a PDFlib Block to any number of pages.

Download Java Code  Switch to PHP Code  Show Output  Show Input (announcement_blocks.pdf) 

/*
 * 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 9
 * 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;
        int exitcode = 0;
     
        
        /* Name of the block contained on the imported page */
        final String blockname = "page"; 
         
        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);

            /* 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.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);
        }
    }
}