Example usage for com.itextpdf.text Chunk getId

Introduction

In this page you can find the example usage for com.itextpdf.text Chunk getId.

Prototype

public AccessibleElementId getId() 

Source Link

Usage

From source file:nz.ac.waikato.cms.doc.HyperLinkGrades.java

License:Open Source License

/**
 * Adds the index with locations to the existing PDF.
 *
 * @param locations   the locations to index
 * @param input   the input PDF/*from   www . j a va  2 s.  c  om*/
 * @param output   the output PDF
 * @return      true if successfully generated
 */
public static boolean addIndex(List<Location> locations, File input, File output) {
    try {
        // copy pages, add target
        PdfReader reader = new PdfReader(input.getAbsolutePath());
        Document document = new Document();
        PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(output.getAbsolutePath()));
        document.open();
        PdfContentByte canvas = writer.getDirectContent();
        PdfImportedPage page;
        float height = 0;
        for (int i = 1; i <= reader.getNumberOfPages(); i++) {
            document.newPage();
            page = writer.getImportedPage(reader, i);
            canvas.addTemplate(page, 1f, 0, 0, 1, 0, 0);
            Chunk loc = new Chunk(" ");
            loc.setLocalDestination("loc" + i);
            height = page.getHeight();
            ColumnText.showTextAligned(canvas, Element.ALIGN_LEFT, new Phrase(loc), 50, height - 50, 0);
        }
        // add index
        for (int i = 0; i < locations.size(); i++) {
            Location loc = locations.get(i);
            if (i % MAX_ITEMS_PER_PAGE == 0)
                document.newPage();
            String text = loc.getID() + " " + (loc.getName() == null ? "???" : loc.getName());
            Chunk chunk = new Chunk("Page " + (loc.getPage() + 1) + ": " + text);
            chunk.setAction(PdfAction.gotoLocalPage("loc" + (loc.getPage() + 1), false));
            ColumnText.showTextAligned(canvas, Element.ALIGN_LEFT, new Phrase(chunk), 50,
                    height - 100 - (i % MAX_ITEMS_PER_PAGE) * 20, 0);
        }
        document.close();

        return true;
    } catch (Exception e) {
        System.err.println("Failed to overlay locations!");
        e.printStackTrace();
        return false;
    }
}

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