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interactive/form_combobox

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/* $Id: form_combobox.java,v 1.5 2013/01/15 10:12:00 stm Exp $

 * Form combobox:

 * Create a form field of type "combobox" for choosing an item from a list or

 * changing an existing item.

 *

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

 * Required data: none

 */

package com.pdflib.cookbook.pdflib.interactive;


import com.pdflib.pdflib;

import com.pdflib.PDFlibException;


public class form_combobox

{

    public static void main (String argv[])

    {

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

    String searchpath = "../input";

    String outfile = "form_combobox.pdf";

    String title = "Form Combobox";

   

    pdflib p = null;


    String optlist;

    int font;

    double width=100, height=18, llx = 100, lly = 600;

 

    try {

        p = new pdflib();


        /* This means we must check return values of load_font() etc. */

        p.set_option("errorpolicy=return");


        p.set_option("searchpath={" + searchpath + "}");


        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: 1.5 $");


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

        if (font == -1)

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

       

        /* Start page */

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

       

        /* Output a combobox title */

        p.setfont(font, 14);

        p.fit_textline("Choose a size from the list or enter an individual " +

            "value:", llx, lly, "");

        lly-=30;

       

        /* Create a form fields of type "combobox".

         * Provide the box with a light gray background

         * (backgroundcolor={gray 0.9}) and a gray border

         * (bordercolor={gray 0.7}).

         * Set the values for the combobox items (itemnamelist={0 1 2 3 4}).

         * Set the labels for the combobox items (itemtextlist={...}).

         * Set the focus on the last item (currentvalue=4).

         * Allow the user to change an item (editable=true)

         */

        optlist = "font=" + font + " fontsize=14 backgroundcolor={gray 0.9} " +

            "bordercolor={gray 0.7} itemnamelist={0 1 2 3 4} currentvalue=4 " +

            "itemtextlist={S M L XL XXL} editable=true";

       

        /* Create the field with a height similar to the height of one list

         * item

         */

        p.create_field(llx, lly, llx + width, lly + height, "size", "combobox",

            optlist);

       

        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();

            }

        }

    }

}