PDFlib Cookbook

cookbook

textflow/avoid_linebreaking

Create a Textflow and define various options for line breaking.

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/*
 * Avoid line breaking:
 * Create a Textflow and define various options for line breaking
 *
 * Required software: PDFlib/PDFlib+PDI/PPS 9
 * Required data: none
 */
package com.pdflib.cookbook.pdflib.textflow;

import com.pdflib.pdflib;
import com.pdflib.PDFlibException;

public class avoid_linebreaking
{
    public static void main (String argv[])
    {
        /* This is where the data files are. Adjust as necessary. */
        String searchpath = "../input";
        String outfile = "avoid_linebreaking.pdf";
        String title = "Avoid Line Breaking";

        pdflib p = null;
        int exitcode = 0;
        int tf = -1, tf_avoid = -1, font;
        String result, optlist, text, text_avoid;

        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");

            /* Set an output path according to the name of the topic */
            if (p.begin_document(outfile, "") == -1)
            throw new Exception("Error: " + p.get_errmsg());

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

            /* Create an A4 Landscape page */
            p.begin_page_ext(0, 0, "width=a4.height height=a4.width");

            /* Load the font */
            font = p.load_font("Helvetica-Bold", "unicode", "");
            if (font == -1)
                throw new Exception("Error: " + p.get_errmsg());
            
            p.setfont(font, 12);
            
            /* ---------------------------------------------------------------------
             * Output text which does not contain any options to avoid line breaking
             * ---------------------------------------------------------------------
             */
            text = "For more information about the Giant Wing Paper Plane see " +
                "our Web site <underline=true>www.kraxi-systems.com" +
                "<underline=false>.<nextline>Alternatively, contact us by email " +
                "via <underline=true>questions@kraxi-systems.com" +
                "<underline=false>. You'll get all information about how to fly " +
                "the Giant Wing in a thunderstorm as soon as possible.";
         
            p.fit_textline("Text without any options to avoid line breaking", 
                50, 430, "");

            /* Create the Textflow from the text */
            optlist = "fontname=Helvetica fontsize=20 encoding=unicode " +
                "leading=140%";
            tf = p.create_textflow(text, optlist);
            if (tf == -1)
                throw new Exception("Error: " + p.get_errmsg());
            
            result = p.fit_textflow(tf, 50, 100, 300, 400,
                "fitmethod=auto showborder");
            if (!result.equals("_stop"))
            {
                /* Check for errors */
            }
            p.delete_textflow(tf);
            
            
            /* --------------------------------------------------------------
             * Output the same text but with additional options to avoid line
             * breaking
             * --------------------------------------------------------------
             */
            
            /* Text containing options to avoid any line breaking in the Web 
             * address with "<avoidbreak>...<noavoidbreak>" and to avoid any line
             * breaking after the "-" and "." characters in the email address with
             * "charclass={letter {- .}}>...<charclass=default>".
             */ 
            text_avoid = "For more information about the Giant Wing Paper Plane " +
                "see our Web site <underline=true avoidbreak>" +
                "www.kraxi-systems.com<underline=false noavoidbreak>.<nextline>" +
                "Alternatively, contact us by email via <underline=true " +
                "charclass={letter {- .}}>questions@kraxi-systems.com" +
                "<charclass={default {- .}} underline=false>. You'll get all " +
                "information about how to fly the Giant Wing in a thunderstorm " +
                "as soon as possible.";
            
            p.fit_textline("Text with \"charclass\" and \"avoidbreak\" options",
                450, 430, "");
            
            /* Create the Textflow from the text */
            tf_avoid = p.create_textflow(text_avoid, optlist);
            if (tf_avoid == -1)
                throw new Exception("Error: " + p.get_errmsg());

            result = p.fit_textflow(tf_avoid, 450, 100, 700, 400,
                "fitmethod=auto showborder");
            if (!result.equals("_stop"))
            {
                /* Check for errors */
            }
            p.delete_textflow(tf_avoid);

            p.end_page_ext("");

            p.end_document("");

        } 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);
        }
    }
}