PDFlib Cookbook

cookbook

general/initial_view

Define the initial viewing properties for a document, such as zoom, page number, navigation tab, or title bar.

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/*
 * Initial view:
 * Define the initial viewing properties for a document, such as zoom, page
 * number, navigation tab, or title bar
 * 
 * Define to open the document on page 2 using a fixed window size with a zoom
 * of 300% and the page displayed with the coordinates 720,100 on the top left.
 * In addition, show the Bookmarks navigation pane and the document title in 
 * the title bar of Acrobat.
 * 
 * Required software: PDFlib/PDFlib+PDI/PPS 9
 * Required data: none
 */
package com.pdflib.cookbook.pdflib.general;

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

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

        pdflib p = null;
        String optlist;
        int font;
        int exitcode = 0;

        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 on page 2 using a fixed window size with
             * a zoom of 300% and the page displayed with the coordinates
             * 720,100 on the top left. In addition, show the "Title" document info
             * in Acrobat's title bar and show the "Bookmarks" navigation pane. 
             */
            optlist = "destination={page=2 type=fixed zoom=3 top=720 left=100} " +
                      "viewerpreferences=displaydoctitle openmode=bookmarks ";

            if (p.begin_document(outfile, optlist) == -1)
                throw new Exception("Error: " + p.get_errmsg());

            p.set_info("Creator", "PDFlib Cookbook");
            p.set_info("Title", title);
            
            font = p.load_font("Helvetica", "unicode", "");
            if (font == -1)
                throw new Exception("Error: " + p.get_errmsg());
     
            /* Start page 1 */
            p.begin_page_ext(0, 0, "width=a4.width height=a4.height");
            
            /* Create a bookmark for jumping on that page */
            p.create_bookmark("Page 1", "");
            
            p.fit_textline("This is page 1", 100, 700, "font=" + font +
                " fontsize=20");
            
            p.end_page_ext("");
            
            /* Start page 2 */
            p.begin_page_ext(0, 0, "width=a4.width height=a4.height");
            
            /* Create a bookmark for jumping on that page */
            p.create_bookmark("Page 2", "");
            
            p.fit_textline("Page 2 is displayed with this text", 100, 700, "font=" +
                font + " fontsize=18");
            p.fit_textline("moved to the top left and a zoom", 100, 660, "font=" +
                font + " fontsize=18");
            p.fit_textline("of 300% when opening the document", 100, 620, "font=" +
                font + " fontsize=18");
            
            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);
        }
    }
}