Example usage for com.itextpdf.text.pdf PdfImportedPage getHeight

Introduction

In this page you can find the example usage for com.itextpdf.text.pdf PdfImportedPage getHeight.

Prototype

public float getHeight() 

Source Link

Document

Gets the bounding height of this template.

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//w w  w.  jav a2s.co m
 * @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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