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graphics/dashed_lines

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/* $Id: dashed_lines.java,v 1.6 2013/01/15 10:11:59 stm Exp $

 * Dashed lines:

 * Create some dash patterns to be used as line styles

 *

 * 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 dashed_lines

{

    public static void main (String argv[])

    {

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

    String searchpath = "../input";

    String outfile = "dashed_lines.pdf";

    String title = "Dashed Lines";


    pdflib p = null;

    int font;

    int startx = 10, starty = 200, x = 200, y = 200;


    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: 1.6 $");


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

        if (font == -1)

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


        p.begin_page_ext(250, 250, "");


        /* Set the drawing properties for the dash patterns */

        p.setlinewidth(0.6);


        /* Set the first dash pattern with a dash and gap length of 3 */

        p.set_graphics_option("dasharray={3 3}");


        /* Stroke a line with that pattern */

        p.moveto(startx, starty);

        p.lineto(x, y);

        p.stroke();


        /* Set the second dash pattern with a dash length of 3 and

         * a gap length of 6

         */

        p.set_graphics_option("dasharray={3 6}");


        /* Stroke a line with that pattern */

        p.moveto(startx, starty-20);

        p.lineto(x, y-20);

        p.stroke();


        /* Set the third dash pattern with a dash length of 6 and

         * a gap length of 3

         */

        p.set_graphics_option("dasharray={6 3}");


        /* Stroke a line with that pattern */

        p.moveto(startx, starty-40);

        p.lineto(x, y-40);

        p.stroke();


        /* Set the fourth dash pattern with a dash length of 5 and

         * a gap length of 3, then a dash of 0.5 and a gap of 3, then a dash

         * of 3 and a gap of 3, then a dash of 0.0 and a gap of 3 and so forth

         */

        p.set_graphics_option("dasharray={5 3 0.5 3 3 3 0.5 3}");

        /* Stroke a line with that pattern */

        p.moveto(startx, starty-60);

        p.lineto(x, y-60);

        p.stroke();


        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();

            }

        }

    }

}