Java 类com.itextpdf.text.pdf.PdfAnnotation 实例源码

private int numberOfVisibleSignatureFieldsOnSignaturePage(AcroFields readerFields, ArrayList<String> signatureFieldsNames, int signaturePage) {
    int count = 0;
    for (String signatureFieldName : signatureFieldsNames) {
        Item i = readerFields.getFieldItem(signatureFieldName);
        int page = i.getPage(0);
        if(page == signaturePage){
            PdfDictionary pdct = i.getMerged(0); 
            PdfNumber flags = pdct.getAsNumber(PdfName.F); 
            if ((flags.intValue() & PdfAnnotation.FLAGS_HIDDEN) == 0) {
                count = count + 1;
            } 
        }
    }
    return count;
}

PdfAnnotation createAnnotation(PdfWriter writer, Rectangle rect, String contents) throws DocumentException, IOException {
    PdfContentByte cb = writer.getDirectContent();
    PdfAppearance cs = cb.createAppearance(rect.getWidth(), rect.getHeight());

    cs.rectangle(0 , 0, rect.getWidth(), rect.getHeight());
    cs.fill();

    cs.setFontAndSize(BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.NOT_EMBEDDED), 12);                        
    cs.beginText();
    cs.setLeading(12 + 1.75f);
    cs.moveText(.75f, rect.getHeight() - 12 + .75f);
    cs.showText(contents);
    cs.endText();

    return PdfAnnotation.createFreeText(writer, rect, contents, cs);
}

/**
 * <a href="https://stackoverflow.com/questions/46204693/cant-get-itext-rectangle-to-work-correctly-with-annotations">
 * Can't get itext Rectangle to work correctly with annotations
 * </a>
 * <p>
 * This test looks at a <b>Text</b> annotation added via a {@link Chunk}
 * as done by the OP. As this way of adding annotations resets the
 * annotation <b>Rect</b> to the bounding box of the rendered {@link Chunk},
 * it is not really what the OP wants.
 * </p>
 */
@Test
public void testAnnotationIconForTYD() throws FileNotFoundException, DocumentException {
    Document document = new Document();
    PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(new File(RESULT_FOLDER, "annotationIcons.pdf")));
    document.open();

    // Not "new Rectangle(164, 190, 164, 110)" which would be empty
    Rectangle rect = new Rectangle(164, 190, 328, 300);

    // Annotation added like the OP does
    Chunk chunk_text = new Chunk("Let's test a Text annotation...");
    chunk_text.setAnnotation(PdfAnnotation.createText(writer, rect, "Warning", "This is a Text annotation with Comment icon.", false, "Comment"));        

    document.add(chunk_text);

    // Annotation added to the document without Chunk
    writer.addAnnotation(PdfAnnotation.createText(writer, rect, "Warning 2", "This is another Text annotation with Comment icon.", false, "Comment"));

    document.close();
}

@Test
public void testOPCode() throws IOException, DocumentException
{
    try (   InputStream resourceStream = getClass().getResourceAsStream("/mkl/testarea/itext5/merge/testA4.pdf");
            OutputStream outputStream = new FileOutputStream(new File(RESULT_FOLDER, "testA4-annotate.pdf"))    )
    {
        PdfReader reader = new PdfReader(resourceStream);
        PdfStamper stamper = new PdfStamper(reader, outputStream);

        Rectangle linkLocation = new Rectangle( 100, 700, 100 + 200, 700 + 25 );
        PdfName highlight = PdfAnnotation.HIGHLIGHT_INVERT;
        PdfAnnotation linkRed  = PdfAnnotation.createLink( stamper.getWriter(), linkLocation, highlight, "red" );
        PdfAnnotation linkGreen = PdfAnnotation.createLink( stamper.getWriter(), linkLocation, highlight, "green" );
        BaseColor baseColorRed = new BaseColor(255,0,0);
        BaseColor baseColorGreen = new BaseColor(0,255,0);
        linkRed.setColor(baseColorRed);
        linkGreen.setColor(baseColorGreen);
        double angleDegrees = 10;
        double angleRadians = Math.PI*angleDegrees/180;
        stamper.addAnnotation(linkRed, 1);
        linkGreen.applyCTM(AffineTransform.getRotateInstance(angleRadians));
        stamper.addAnnotation(linkGreen, 1);
        stamper.close();
    }
}

/**
 * <a href="http://stackoverflow.com/questions/43205385/trying-to-draw-an-ellipse-annotation-and-the-border-on-the-edges-goes-thin-and-t">
 * Trying to draw an ellipse annotation and the border on the edges goes thin and thik when i try to roatate pdf itext5
 * </a>
 * <p>
 * This test creates an ellipse annotation without appearance on a page without rotation. Everything looks ok.
 * </p>
 * @see #testCreateEllipseAppearance()
 * @see #testCreateEllipseOnRotated()
 * @see #testCreateEllipseAppearanceOnRotated()
 * @see #testCreateCorrectEllipseAppearanceOnRotated()
 */
@Test
public void testCreateEllipse() throws IOException, DocumentException
{
    try (   InputStream resourceStream = getClass().getResourceAsStream("/mkl/testarea/itext5/merge/testA4.pdf");
            OutputStream outputStream = new FileOutputStream(new File(RESULT_FOLDER, "testA4-ellipse.pdf"))    )
    {
        PdfReader reader = new PdfReader(resourceStream);
        PdfStamper stamper = new PdfStamper(reader, outputStream);

        Rectangle rect = new Rectangle(202 + 6f, 300, 200 + 100, 300 + 150);

        PdfAnnotation annotation = PdfAnnotation.createSquareCircle(stamper.getWriter(), rect, null, false);
        annotation.setFlags(PdfAnnotation.FLAGS_PRINT);
        annotation.setColor(BaseColor.RED);
        annotation.setBorderStyle(new PdfBorderDictionary(3.5f, PdfBorderDictionary.STYLE_SOLID));

        stamper.addAnnotation(annotation, 1);

        stamper.close();
        reader.close();
    }
}

/**
 * <a href="http://stackoverflow.com/questions/43205385/trying-to-draw-an-ellipse-annotation-and-the-border-on-the-edges-goes-thin-and-t">
 * Trying to draw an ellipse annotation and the border on the edges goes thin and thik when i try to roatate pdf itext5
 * </a>
 * <p>
 * This test creates an ellipse annotation without appearance on a page with rotation.
 * The ellipse form looks ok but it is moved to the right of the actual appearance rectangle when viewed in Adobe Reader.
 * This is caused by iText creating a non-standard rectangle, the lower left not being the lower left etc.
 * </p>
 * @see #testCreateEllipse()
 * @see #testCreateEllipseAppearance()
 * @see #testCreateEllipseAppearanceOnRotated()
 * @see #testCreateCorrectEllipseAppearanceOnRotated()
 */
@Test
public void testCreateEllipseOnRotated() throws IOException, DocumentException
{
    try (   InputStream resourceStream = getClass().getResourceAsStream("/mkl/testarea/itext5/merge/testA4.pdf");
            OutputStream outputStream = new FileOutputStream(new File(RESULT_FOLDER, "testA4-rotated-ellipse.pdf"))    )
    {
        PdfReader reader = new PdfReader(resourceStream);
        reader.getPageN(1).put(PdfName.ROTATE, new PdfNumber(90));

        PdfStamper stamper = new PdfStamper(reader, outputStream);

        Rectangle rect = new Rectangle(202 + 6f, 300, 200 + 100, 300 + 150);

        PdfAnnotation annotation = PdfAnnotation.createSquareCircle(stamper.getWriter(), rect, null, false);
        annotation.setFlags(PdfAnnotation.FLAGS_PRINT);
        annotation.setColor(BaseColor.RED);
        annotation.setBorderStyle(new PdfBorderDictionary(3.5f, PdfBorderDictionary.STYLE_SOLID));

        stamper.addAnnotation(annotation, 1);

        stamper.close();
        reader.close();
    }
}

/**
 * <p>
 * A primitive attempt at copying links from page <code>sourcePage</code>
 * of <code>PdfReader reader</code> to page <code>targetPage</code> of
 * <code>PdfStamper stamper</code>.
 * </p>
 * <p>
 * This method is meant only for the use case at hand, i.e. copying a link
 * to an external URI without expecting any advanced features.
 * </p>
 */
void copyLinks(PdfStamper stamper, int targetPage, PdfReader reader, int sourcePage)
{
    PdfDictionary sourcePageDict = reader.getPageNRelease(sourcePage);
    PdfArray annotations = sourcePageDict.getAsArray(PdfName.ANNOTS);
    if (annotations != null && annotations.size() > 0)
    {
        for (PdfObject annotationObject : annotations)
        {
            annotationObject = PdfReader.getPdfObject(annotationObject);
            if (!annotationObject.isDictionary())
                continue;
            PdfDictionary annotation = (PdfDictionary) annotationObject;
            if (!PdfName.LINK.equals(annotation.getAsName(PdfName.SUBTYPE)))
                continue;

            PdfArray rectArray = annotation.getAsArray(PdfName.RECT);
            if (rectArray == null || rectArray.size() < 4)
                continue;
            Rectangle rectangle = PdfReader.getNormalizedRectangle(rectArray);

            PdfName hightLight = annotation.getAsName(PdfName.H);
            if (hightLight == null)
                hightLight = PdfAnnotation.HIGHLIGHT_INVERT;

            PdfDictionary actionDict = annotation.getAsDict(PdfName.A);
            if (actionDict == null || !PdfName.URI.equals(actionDict.getAsName(PdfName.S)))
                continue;
            PdfString urlPdfString = actionDict.getAsString(PdfName.URI);
            if (urlPdfString == null)
                continue;
            PdfAction action = new PdfAction(urlPdfString.toString());

            PdfAnnotation link = PdfAnnotation.createLink(stamper.getWriter(), rectangle, hightLight, action);
            stamper.addAnnotation(link, targetPage);
        }
    }
}

/**
 * <a href="http://stackoverflow.com/questions/28943245/possible-to-ues-variables-in-a-pdf-doument">
 * Possible to ues variables in a PDF doument?
 * </a>
 * <p>
 * Generates a sample PDF containing two widgets of the same text field.
 * </p>
 */
@Test
public void testCreateFormWithSameFieldTwice() throws IOException, DocumentException
{
    try (   OutputStream os = new FileOutputStream(new File(RESULT_FOLDER, "aFieldTwice.pdf"))  )
    {
        Document document = new Document();
        PdfWriter writer = PdfWriter.getInstance(document, os);
        document.open();
        document.add(new Paragraph("The same field twice"));

        PdfFormField field = PdfFormField.createTextField(writer, false, false, 0);
        field.setFieldName("fieldName");

        PdfFormField annot1 = PdfFormField.createEmpty(writer);
        annot1.setWidget(new Rectangle(30, 700, 200, 720), PdfAnnotation.HIGHLIGHT_INVERT);
        field.addKid(annot1);

        PdfFormField annot2 = PdfFormField.createEmpty(writer);
        annot2.setWidget(new Rectangle(230, 700, 400, 720), PdfAnnotation.HIGHLIGHT_INVERT);
        field.addKid(annot2);

        writer.addAnnotation(field);

        document.close();
    }
}

/**
 * <a href="http://stackoverflow.com/questions/37275267/how-to-make-pdf-annotation-as-read-only-using-itext">
 * how to make pdf annotation as read only using itext?
 * </a>
 * <br/>
 * test-annotated.pdf <i>simple PDF with sticky note</i>
 * 
 * <p>
 * This test shows how to set the read-only flags of all annotations of a document.
 * </p>
 */
@Test
public void testMarkAnnotationsReadOnly() throws IOException, DocumentException
{
    try (   InputStream resourceStream = getClass().getResourceAsStream("test-annotated.pdf");
            OutputStream outputStream = new FileOutputStream(new File(RESULT_FOLDER, "test-annotated-ro.pdf"))    )
    {
        PdfReader reader = new PdfReader(resourceStream);
        PdfStamper stamper = new PdfStamper(reader, outputStream);

        for (int page = 1; page <= reader.getNumberOfPages(); page++)
        {
            PdfDictionary pageDictionary = reader.getPageN(page);
            PdfArray annotationArray = pageDictionary.getAsArray(PdfName.ANNOTS);
            if (annotationArray == null)
                continue;
            for (PdfObject object : annotationArray)
            {
                PdfObject directObject = PdfReader.getPdfObject(object);
                if (directObject instanceof PdfDictionary)
                {
                    PdfDictionary annotationDictionary = (PdfDictionary) directObject;
                    PdfNumber flagsNumber = annotationDictionary.getAsNumber(PdfName.F);
                    int flags = flagsNumber != null ? flagsNumber.intValue() : 0;
                    flags |= PdfAnnotation.FLAGS_READONLY;
                    annotationDictionary.put(PdfName.F, new PdfNumber(flags));
                }
            }
        }

        stamper.close();
    }
}

@Test
public void testOwnAppearances() throws IOException, DocumentException
{
    try (   InputStream resourceStream = getClass().getResourceAsStream("/mkl/testarea/itext5/merge/testA4.pdf");
            OutputStream outputStream = new FileOutputStream(new File(RESULT_FOLDER, "testA4-annotate-app.pdf"))    )
    {
        PdfReader reader = new PdfReader(resourceStream);
        PdfStamper stamper = new PdfStamper(reader, outputStream);

        BaseColor baseColorRed = new BaseColor(255,0,0);
        BaseColor baseColorGreen = new BaseColor(0,255,0);
        Rectangle linkLocation = new Rectangle( 100, 700, 100 + 200, 700 + 25 );
        PdfName highlight = PdfAnnotation.HIGHLIGHT_INVERT;

        PdfAnnotation linkGreen = PdfAnnotation.createLink( stamper.getWriter(), linkLocation, highlight, "green" );
        PdfTemplate appearance = PdfTemplate.createTemplate(stamper.getWriter(), linkLocation.getWidth(), linkLocation.getHeight());
        appearance.setColorFill(baseColorGreen);
        appearance.rectangle(0, 0, linkLocation.getWidth(), linkLocation.getHeight());
        appearance.fill();
        double angleDegrees = 35;
        double angleRadians = Math.PI*angleDegrees/180;
        AffineTransform at = AffineTransform.getRotateInstance(angleRadians);
        appearance.setMatrix((float)at.getScaleX(), (float)at.getShearY(),(float) at.getShearX(), (float)at.getScaleY(),(float) at.getTranslateX(), (float)at.getTranslateY());
        linkGreen.setAppearance(PdfName.N, appearance);
        linkGreen.setColor(baseColorGreen);
        stamper.addAnnotation(linkGreen, 1);

        PdfAnnotation linkRed  = PdfAnnotation.createLink( stamper.getWriter(), linkLocation, highlight, "red" );
        linkRed.setColor(baseColorRed);
        stamper.addAnnotation(linkRed, 1);

        stamper.close();
    }
}

/**
 * <a href="http://stackoverflow.com/questions/43205385/trying-to-draw-an-ellipse-annotation-and-the-border-on-the-edges-goes-thin-and-t">
 * Trying to draw an ellipse annotation and the border on the edges goes thin and thik when i try to roatate pdf itext5
 * </a>
 * <p>
 * This test creates an ellipse annotation with appearance on a page without rotation. Everything looks ok.
 * </p>
 * @see #testCreateEllipse()
 * @see #testCreateEllipseOnRotated()
 * @see #testCreateEllipseAppearanceOnRotated()
 * @see #testCreateCorrectEllipseAppearanceOnRotated()
 */
@Test
public void testCreateEllipseAppearance() throws IOException, DocumentException
{
    try (   InputStream resourceStream = getClass().getResourceAsStream("/mkl/testarea/itext5/merge/testA4.pdf");
            OutputStream outputStream = new FileOutputStream(new File(RESULT_FOLDER, "testA4-ellipse-appearance.pdf"))    )
    {
        PdfReader reader = new PdfReader(resourceStream);
        PdfStamper stamper = new PdfStamper(reader, outputStream);

        Rectangle rect = new Rectangle(202 + 6f, 300, 200 + 100, 300 + 150);

        PdfAnnotation annotation = PdfAnnotation.createSquareCircle(stamper.getWriter(), rect, null, false);
        annotation.setFlags(PdfAnnotation.FLAGS_PRINT);
        annotation.setColor(BaseColor.RED);
        annotation.setBorderStyle(new PdfBorderDictionary(3.5f, PdfBorderDictionary.STYLE_SOLID));

        PdfContentByte cb = stamper.getOverContent(1);
        PdfAppearance app = cb.createAppearance(rect.getWidth(), rect.getHeight());
        app.setColorStroke(BaseColor.RED);
        app.setLineWidth(3.5);
        app.ellipse( 1.5,  1.5, rect.getWidth() - 1.5, rect.getHeight() - 1.5);
        app.stroke();
        annotation.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, app);

        stamper.addAnnotation(annotation, 1);

        stamper.close();
        reader.close();
    }
}

/**
 * <a href="http://stackoverflow.com/questions/43205385/trying-to-draw-an-ellipse-annotation-and-the-border-on-the-edges-goes-thin-and-t">
 * Trying to draw an ellipse annotation and the border on the edges goes thin and thik when i try to roatate pdf itext5
 * </a>
 * <p>
 * This test creates an ellipse annotation with appearance on a page with rotation.
 * The ellipse position looks ok but it is deformed.
 * This is caused by iText rotating the annotation rectangle but not (how could it?) the appearance rectangle.
 * </p>
 * @see #testCreateEllipse()
 * @see #testCreateEllipseAppearance()
 * @see #testCreateEllipseOnRotated()
 * @see #testCreateCorrectEllipseAppearanceOnRotated()
 */
@Test
public void testCreateEllipseAppearanceOnRotated() throws IOException, DocumentException
{
    try (   InputStream resourceStream = getClass().getResourceAsStream("/mkl/testarea/itext5/merge/testA4.pdf");
            OutputStream outputStream = new FileOutputStream(new File(RESULT_FOLDER, "testA4-rotated-ellipse-appearance.pdf"))    )
    {
        PdfReader reader = new PdfReader(resourceStream);
        reader.getPageN(1).put(PdfName.ROTATE, new PdfNumber(90));

        PdfStamper stamper = new PdfStamper(reader, outputStream);

        Rectangle rect = new Rectangle(202 + 6f, 300, 200 + 100, 300 + 150);

        PdfAnnotation annotation = PdfAnnotation.createSquareCircle(stamper.getWriter(), rect, null, false);
        annotation.setFlags(PdfAnnotation.FLAGS_PRINT);
        annotation.setColor(BaseColor.RED);
        annotation.setBorderStyle(new PdfBorderDictionary(3.5f, PdfBorderDictionary.STYLE_SOLID));

        PdfContentByte cb = stamper.getOverContent(1);
        PdfAppearance app = cb.createAppearance(rect.getWidth(), rect.getHeight());
        app.setColorStroke(BaseColor.RED);
        app.setLineWidth(3.5);
        app.ellipse( 1.5,  1.5, rect.getWidth() - 1.5, rect.getHeight() - 1.5);
        app.stroke();
        annotation.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, app);

        stamper.addAnnotation(annotation, 1);

        stamper.close();
        reader.close();
    }
}

/**
 * <a href="http://stackoverflow.com/questions/43205385/trying-to-draw-an-ellipse-annotation-and-the-border-on-the-edges-goes-thin-and-t">
 * Trying to draw an ellipse annotation and the border on the edges goes thin and thik when i try to roatate pdf itext5
 * </a>
 * <p>
 * This test creates an ellipse annotation with appearance with switched dimensions on a page with rotation.
 * Everything looks ok.
 * </p>
 * @see #testCreateEllipse()
 * @see #testCreateEllipseAppearance()
 * @see #testCreateEllipseOnRotated()
 * @see #testCreateEllipseAppearanceOnRotated()
 */
@Test
public void testCreateCorrectEllipseAppearanceOnRotated() throws IOException, DocumentException
{
    try (   InputStream resourceStream = getClass().getResourceAsStream("/mkl/testarea/itext5/merge/testA4.pdf");
            OutputStream outputStream = new FileOutputStream(new File(RESULT_FOLDER, "testA4-rotated-ellipse-appearance-correct.pdf"))    )
    {
        PdfReader reader = new PdfReader(resourceStream);
        reader.getPageN(1).put(PdfName.ROTATE, new PdfNumber(90));

        PdfStamper stamper = new PdfStamper(reader, outputStream);

        Rectangle rect = new Rectangle(202 + 6f, 300, 200 + 100, 300 + 150);

        PdfAnnotation annotation = PdfAnnotation.createSquareCircle(stamper.getWriter(), rect, null, false);
        annotation.setFlags(PdfAnnotation.FLAGS_PRINT);
        annotation.setColor(BaseColor.RED);
        annotation.setBorderStyle(new PdfBorderDictionary(3.5f, PdfBorderDictionary.STYLE_SOLID));

        PdfContentByte cb = stamper.getOverContent(1);
        PdfAppearance app = cb.createAppearance(rect.getHeight(), rect.getWidth());
        app.setColorStroke(BaseColor.RED);
        app.setLineWidth(3.5);
        app.ellipse( 1.5,  1.5, rect.getHeight() - 1.5, rect.getWidth() - 1.5);
        app.stroke();
        annotation.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, app);

        stamper.addAnnotation(annotation, 1);

        stamper.close();
        reader.close();
    }
}

/**
 * <a href="http://stackoverflow.com/questions/32332490/new-signature-field-rotated-90-degrees">
 * New Signature Field Rotated 90 Degrees
 * </a>
 * <br/>
 * <a href="https://drive.google.com/open?id=0B3pKBz-WDrXnM3hYeDFtXzhldnM">
 * DA3161-Template.pdf
 * </a>
 * <p>
 * The page in your document is rotated using the Rotate page dictionary entry.
 * When creating a field to be filled-in by others later, you have to add a hint
 * to the field indicating a counter-rotation if you want the field content to
 * effectively appear upright.
 * </p>
 * <p>
 * You do this by setting the MKRotation attribute of the field. This creates a
 * rotation entry R with value 90 in the appearance characteristics dictionary
 * MK of the field.
 * </p>
 */
@Test
public void testDA3161_Template() throws IOException, GeneralSecurityException, NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException, DocumentException
{
    try (   InputStream resource = getClass().getResourceAsStream("DA3161-Template.pdf");
            OutputStream result = new FileOutputStream(new File(RESULT_FOLDER, "DA3161-Template_Field.pdf"))    )
    {
        System.out.println("DA3161-Template.pdf");
        PdfReader reader = new PdfReader(resource);
        PdfStamper pdfStamper = new PdfStamper(reader, result);
        AcroFields fields = pdfStamper.getAcroFields();
        int itemno = 3;

      //Get location to the field where we will place the signature field
        FieldPosition NewPosition = fields.getFieldPositions("DESC_0_" + (itemno + 1)).get(0);
        float l1 = NewPosition.position.getLeft();
        float r1 = NewPosition.position.getRight();
        float t1 = NewPosition.position.getTop();
        float b1 = NewPosition.position.getBottom();

        PdfFormField field = PdfFormField.createSignature(pdfStamper.getWriter());
        field.setFieldName("G4_SignatureX");

        // Set the widget properties
        field.setWidget(new Rectangle(r1, t1, l1, b1), PdfAnnotation.HIGHLIGHT_NONE);
        field.setFlags(PdfAnnotation.FLAGS_PRINT);

        // !!!!!!!!!!!!!!!!!!!
        field.setMKRotation(90);

        // Add the annotation
        pdfStamper.addAnnotation(field, 1);

        pdfStamper.close();
    }
}

/**
 * <a href="http://stackoverflow.com/questions/41949253/how-to-add-columntext-as-an-annotation-in-itext-pdf">
 * How to add columnText as an annotation in itext pdf
 * </a>
 * <p>
 * This test demonstrates how to use a columntext in combination with an annotation.
 * </p>
 */
@Test
public void testAddAnnotationLikeJasonY() throws IOException, DocumentException
{
    String html ="<html><h1>Header</h1><p>A paragraph</p><p>Another Paragraph</p></html>";
    String css = "h1 {color: red;}";
    ElementList elementsList = XMLWorkerHelper.parseToElementList(html, css);

    try (   InputStream resource = getClass().getResourceAsStream("/mkl/testarea/itext5/extract/test.pdf");
            OutputStream result = new FileOutputStream(new File(RESULT_FOLDER, "JasonY.pdf"))   )
    {
        PdfReader reader = new PdfReader(resource);
        PdfStamper stamper = new PdfStamper(reader, result);

        Rectangle cropBox = reader.getCropBox(1);

        PdfAnnotation annotation = stamper.getWriter().createAnnotation(cropBox, PdfName.FREETEXT);
        PdfAppearance appearance = PdfAppearance.createAppearance(stamper.getWriter(), cropBox.getWidth(), cropBox.getHeight());

        ColumnText ct = new ColumnText(appearance);
        ct.setSimpleColumn(new Rectangle(cropBox.getWidth(), cropBox.getHeight()));
        elementsList.forEach(element -> ct.addElement(element));
        ct.go();

        annotation.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, appearance);
        stamper.addAnnotation(annotation, 1);

        stamper.close();
        reader.close();
    }
}

/**
 * <a href="http://stackoverflow.com/questions/34734669/define-background-color-and-transparency-of-link-annotation-in-pdf">
 * Define background color and transparency of link annotation in PDF
 * </a>
 * <p>
 * This test creates a link annotation with custom appearance. Adobe Reader chooses
 * to ignore it but other viewers use it. Interestingly Adobe Acrobat export-as-image
 * does use the custom appearance...
 * </p>
 */
@Test
public void testCreateLinkWithAppearance() throws IOException, DocumentException
{
    Document doc = new Document();
    PdfWriter writer = PdfWriter.getInstance(doc, new FileOutputStream(new File(RESULT_FOLDER, "custom-link.appearance.pdf")));
    writer.setCompressionLevel(0);
    doc.open();

    BaseFont baseFont = BaseFont.createFont();
    int fontSize = 15;
    doc.add(new Paragraph("Hello", new Font(baseFont, fontSize)));

    PdfContentByte content = writer.getDirectContent();

    String text = "Test";
    content.setFontAndSize(baseFont, fontSize);
    content.beginText();
    content.moveText(100, 500);
    content.showText(text);
    content.endText();

    Rectangle linkLocation = new Rectangle(95, 495 + baseFont.getDescentPoint(text, fontSize),
            105 + baseFont.getWidthPoint(text, fontSize), 505 + baseFont.getAscentPoint(text, fontSize));

    PdfAnnotation linkGreen = PdfAnnotation.createLink(writer, linkLocation, PdfName.HIGHLIGHT, "green" );
    PdfTemplate appearance = PdfTemplate.createTemplate(writer, linkLocation.getWidth(), linkLocation.getHeight());
    PdfGState state = new PdfGState();
    //state.FillOpacity = .3f;
    // IMPROVEMENT: Use blend mode Darken instead of transparency; you may also want to try Multiply.
    state.setBlendMode(new PdfName("Darken"));
    appearance.setGState(state);

    appearance.setColorFill(BaseColor.GREEN);
    appearance.rectangle(0, 0, linkLocation.getWidth(), linkLocation.getHeight());
    appearance.fill();
    linkGreen.setAppearance(PdfName.N, appearance);
    writer.addAnnotation(linkGreen);

    doc.open();
    doc.close();
}

@Override
public void exportElement(JRPdfExporterContext exporterContext, JRGenericPrintElement element) {
    try {
        PdfWriter writer = exporterContext.getPdfWriter();
        PdfIndirectObject swfRef;
        boolean newContext = !existingContexts.containsKey(exporterContext);
        if (newContext) {
            PdfDictionary extensions = new PdfDictionary();
            PdfDictionary adobeExtension = new PdfDictionary();
            adobeExtension.put(new PdfName("BaseVersion"), PdfWriter.PDF_VERSION_1_7);
            adobeExtension.put(new PdfName("ExtensionLevel"), new PdfNumber(3));
            extensions.put(new PdfName("ADBE"), adobeExtension);
            writer.getExtraCatalog().put(new PdfName("Extensions"), extensions);

            byte[] swfData = getChartSwf();
            PdfFileSpecification swfFile = PdfFileSpecification.fileEmbedded(writer, null, "Open Flash Chart", swfData);
            swfRef = writer.addToBody(swfFile);
            existingContexts.put(exporterContext, swfRef);
        }
        else {
            swfRef = (PdfIndirectObject) existingContexts.get(exporterContext);
        }

        Rectangle rect = new Rectangle(element.getX() + exporterContext.getOffsetX(),
                exporterContext.getExportedReport().getPageHeight() - element.getY() - exporterContext.getOffsetY(),
                element.getX() + exporterContext.getOffsetX() + element.getWidth(),
                exporterContext.getExportedReport().getPageHeight() - element.getY() - exporterContext.getOffsetY() - element.getHeight());
        PdfAnnotation ann = new PdfAnnotation(writer, rect);
        ann.put(PdfName.SUBTYPE, new PdfName("RichMedia"));

        PdfDictionary settings = new PdfDictionary();
        PdfDictionary activation = new PdfDictionary();
        activation.put(new PdfName("Condition"), new PdfName("PV"));
        settings.put(new PdfName("Activation"), activation);
        ann.put(new PdfName("RichMediaSettings"), settings);

        PdfDictionary content = new PdfDictionary();

        HashMap<String, PdfIndirectReference> assets = new HashMap<String, PdfIndirectReference>();
        assets.put("map.swf", swfRef.getIndirectReference());
        PdfDictionary assetsDictionary = PdfNameTree.writeTree(assets, writer);
        content.put(new PdfName("Assets"), assetsDictionary);

        PdfArray configurations = new PdfArray();
        PdfDictionary configuration = new PdfDictionary();

        PdfArray instances = new PdfArray();
        PdfDictionary instance = new PdfDictionary();
        instance.put(new PdfName("Subtype"), new PdfName("Flash"));
        PdfDictionary params = new PdfDictionary();

        String chartData = ((ChartGenerator) element.getParameterValue(ChartGenerator.PARAMETER_CHART_GENERATOR)).generateChart();
        String vars = "inline_data=" + chartData;
        params.put(new PdfName("FlashVars"), new PdfString(vars));
        instance.put(new PdfName("Params"), params);
        instance.put(new PdfName("Asset"), swfRef.getIndirectReference());
        PdfIndirectObject instanceRef = writer.addToBody(instance);
        instances.add(instanceRef.getIndirectReference());
        configuration.put(new PdfName("Instances"), instances);

        PdfIndirectObject configurationRef = writer.addToBody(configuration);
        configurations.add(configurationRef.getIndirectReference());
        content.put(new PdfName("Configurations"), configurations);

        ann.put(new PdfName("RichMediaContent"), content);

        writer.addAnnotation(ann);
    }
    catch (Exception e) {
        throw new RuntimeException(e);
    }
}