PDFlib Cookbook

cookbook

blocks/duplicate_block

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/* $Id: duplicate_block.java,v 1.8 2014/01/30 14:05:22 rjs Exp $
 * 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 + " $Revision: 1.8 $");

	    /* 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");
	    exitcode = 1;
        } catch (Exception e) {
            System.err.println(e.getMessage());
	    exitcode = 1;
        } finally {
            if (p != null) {
                p.delete();
            }
	    System.exit(exitcode);
        }
    }
}