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);
        }
    }
}