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graphics/stamp_on_print_layer

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/* $Id: stamp_on_print_layer.java,v 1.5 2013/01/15 10:11:59 stm Exp $

 * Stamp on print layer:

 * Place a stamp on a layer which is only visible upon printing

 *

 * Create a layer "stamp" which contains the stamp. The layer properties are set

 * to print, but not display the layer contents on screen.

 * Create some standard text which is displayed and printed by default. 

 *

 * Required software: PDFlib/PDFlib+PDI/PPS 9

 * Required data: none

 */

package com.pdflib.cookbook.pdflib.graphics;


import com.pdflib.pdflib;

import com.pdflib.PDFlibException;


public class stamp_on_print_layer

{

    public static void main (String argv[])

    {

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

    String searchpath = "../input";

    String outfile = "stamp_on_print_layer.pdf";

    String title = "Stamp on Print Layer";


    pdflib p = null;

    final int x = 50, y = 50;

    int tf = -1, font, stamplayer;

   

    final String textflow =

        "To fold the famous rocket looper proceed as follows:\n" +

        "Take a DIN A4 sheet.\nFold it lenghtwise in the middle.\nThen, fold " +

        "the upper corners down.\nFold the long sides inwards that the " +

        "points A and B meet on the central fold.\nFold the points C and D " +

        "that the upper corners meet with the central fold as well." +

        "\nFold the plane in the middle. Fold the wings down that they close " +

        "with the lower border of the plane.";


    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");


        /* Open the document with the "Layers" navigation tab visible */

        if (p.begin_document(outfile, "openmode=layers") == -1)

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


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

        p.set_info("Title", title + " $Revision: 1.5 $");


        /* Load the font */

        font = p.load_font("Helvetica", "unicode", "");

        if (font == -1)

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


        /* Start page */

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

       


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

         * Define the layer "stamp" to be hidden when opening the document

         * (initialviewstate=false) and place the stamp on it.

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

         */

        stamplayer = p.define_layer("stamp",

            "initialviewstate=false initialprintstate=true");

        p.begin_layer(stamplayer);

       

        /* Fit a text line as outlines like a stamp in the specified box. The

         * stamp will be placed diagonally from the upper left to the lower

         * right (stamp=ul2lr).

         */

        p.fit_textline("The Famous Rocket Looper", x, y, "font=" + font +

            " strokecolor={rgb 1 0 0} textrendering=1 boxsize={500 750} " +

            "strokecolor={rgb 0.5 0 1} stamp=ul2lr");

       

        /* End all layers */

        p.end_layer();


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

         * Place some standard text on the page

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

         */

        String optlist = "fontname=Helvetica fontsize=24 encoding=unicode " +

            "leading=120% charref";

       

        tf = p.add_textflow(tf, textflow, optlist);

        if (tf == -1)

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


        String result = p.fit_textflow(tf, 100, 100, 400, 700, "");

        if (!result.equals("_stop"))

        {

            /* Check for errors or more text to be placed */

        }


        p.end_page_ext("");


        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");

        } catch (Exception e) {

            System.err.println(e.getMessage());

        } finally {

            if (p != null) {

                p.delete();

            }

        }

    }

}