Java Code Examples for org.apache.pdfbox.pdmodel.interactive.annotation.PDAppearanceStream#setBBox()

private PDAppearanceStream prepareNormalAppearanceStream(PDAnnotationWidget widget)
{
    PDAppearanceStream appearanceStream = new PDAppearanceStream(field.getAcroForm().getDocument());

    // Calculate the entries for the bounding box and the transformation matrix
    // settings for the appearance stream
    int rotation = resolveRotation(widget);
    PDRectangle rect = widget.getRectangle();
    Matrix matrix = Matrix.getRotateInstance(Math.toRadians(rotation), 0, 0);
    Point2D.Float point2D = matrix.transformPoint(rect.getWidth(), rect.getHeight());

    PDRectangle bbox = new PDRectangle(Math.abs((float) point2D.getX()), Math.abs((float) point2D.getY()));
    appearanceStream.setBBox(bbox);

    AffineTransform at = calculateMatrix(bbox, rotation);
    if (!at.isIdentity())
    {
        appearanceStream.setMatrix(at);
    }
    appearanceStream.setFormType(1);
    appearanceStream.setResources(new PDResources());
    return appearanceStream;
}
 

private void setTransformationMatrix(PDAppearanceStream appearanceStream)
{
    PDRectangle bbox = getRectangle();
    appearanceStream.setBBox(bbox);
    AffineTransform transform = AffineTransform.getTranslateInstance(-bbox.getLowerLeftX(),
            -bbox.getLowerLeftY());
    appearanceStream.setMatrix(transform);
}
 

@Override
public void generateNormalAppearance()
{
    float lineWidth = getLineWidth();
    PDAnnotationSquareCircle annotation = (PDAnnotationSquareCircle) getAnnotation();
    PDAppearanceContentStream contentStream  = null;

    try
    {
        contentStream = getNormalAppearanceAsContentStream();
        boolean hasStroke = contentStream.setStrokingColorOnDemand(getColor());
        boolean hasBackground = contentStream
                .setNonStrokingColorOnDemand(annotation.getInteriorColor());

        setOpacity(contentStream, annotation.getConstantOpacity());

        contentStream.setBorderLine(lineWidth, annotation.getBorderStyle(), annotation.getBorder());
        PDBorderEffectDictionary borderEffect = annotation.getBorderEffect();

        if (borderEffect != null && borderEffect.getStyle().equals(PDBorderEffectDictionary.STYLE_CLOUDY))
        {
            CloudyBorder cloudyBorder = new CloudyBorder(contentStream,
                borderEffect.getIntensity(), lineWidth, getRectangle());
            cloudyBorder.createCloudyEllipse(annotation.getRectDifference());
            annotation.setRectangle(cloudyBorder.getRectangle());
            annotation.setRectDifference(cloudyBorder.getRectDifference());
            PDAppearanceStream appearanceStream = annotation.getNormalAppearanceStream();
            appearanceStream.setBBox(cloudyBorder.getBBox());
            appearanceStream.setMatrix(cloudyBorder.getMatrix());
        }
        else
        {
            // Acrobat applies a padding to each side of the bbox so the line is completely within
            // the bbox.

            PDRectangle borderBox = handleBorderBox(annotation, lineWidth);

            // lower left corner
            float x0 = borderBox.getLowerLeftX();
            float y0 = borderBox.getLowerLeftY();
            // upper right corner
            float x1 = borderBox.getUpperRightX();
            float y1 = borderBox.getUpperRightY();
            // mid points
            float xm = x0 + borderBox.getWidth() / 2;
            float ym = y0 + borderBox.getHeight() / 2;
            // see http://spencermortensen.com/articles/bezier-circle/
            // the below number was calculated from sampling content streams
            // generated using Adobe Reader
            float magic = 0.55555417f;
            // control point offsets
            float vOffset = borderBox.getHeight() / 2 * magic;
            float hOffset = borderBox.getWidth() / 2 * magic;

            contentStream.moveTo(xm, y1);
            contentStream.curveTo((xm + hOffset), y1, x1, (ym + vOffset), x1, ym);
            contentStream.curveTo(x1, (ym - vOffset), (xm + hOffset), y0, xm, y0);
            contentStream.curveTo((xm - hOffset), y0, x0, (ym - vOffset), x0, ym);
            contentStream.curveTo(x0, (ym + vOffset), (xm - hOffset), y1, xm, y1);
            contentStream.closePath();
        }

        contentStream.drawShape(lineWidth, hasStroke, hasBackground);
    }
    catch (IOException e)
    {
        LOG.error(e);
    }
    finally{
        IOUtils.closeQuietly(contentStream);
    }
}
 

@Override
public void generateNormalAppearance()
{
    float lineWidth = getLineWidth();
    PDAnnotationSquareCircle annotation = (PDAnnotationSquareCircle) getAnnotation();
    PDAppearanceContentStream contentStream  = null;

    try
    {
        contentStream = getNormalAppearanceAsContentStream();
        boolean hasStroke = contentStream.setStrokingColorOnDemand(getColor());
        boolean hasBackground = contentStream
                .setNonStrokingColorOnDemand(annotation.getInteriorColor());

        setOpacity(contentStream, annotation.getConstantOpacity());

        contentStream.setBorderLine(lineWidth, annotation.getBorderStyle(), annotation.getBorder());                
        PDBorderEffectDictionary borderEffect = annotation.getBorderEffect();

        if (borderEffect != null && borderEffect.getStyle().equals(PDBorderEffectDictionary.STYLE_CLOUDY))
        {
            CloudyBorder cloudyBorder = new CloudyBorder(contentStream,
                borderEffect.getIntensity(), lineWidth, getRectangle());
            cloudyBorder.createCloudyRectangle(annotation.getRectDifference());
            annotation.setRectangle(cloudyBorder.getRectangle());
            annotation.setRectDifference(cloudyBorder.getRectDifference());
            PDAppearanceStream appearanceStream = annotation.getNormalAppearanceStream();
            appearanceStream.setBBox(cloudyBorder.getBBox());
            appearanceStream.setMatrix(cloudyBorder.getMatrix());
        }
        else
        {
            PDRectangle borderBox = handleBorderBox(annotation, lineWidth);

            contentStream.addRect(borderBox.getLowerLeftX(), borderBox.getLowerLeftY(),
                    borderBox.getWidth(), borderBox.getHeight());
        }

        contentStream.drawShape(lineWidth, hasStroke, hasBackground);
    }
    catch (IOException e)
    {
        LOG.error(e);
    }
    finally{
        IOUtils.closeQuietly(contentStream);
    }
}
 

/**
 * <a href="http://stackoverflow.com/questions/37601092/pdfbox-identify-specific-pages-and-functionalities-recommendations">
 * PDFBox identify specific pages and functionalities recommendations
 * </a>
 * 
 * <p>
 * This test shows how to add an empty signature field with a custom appearance
 * to an existing PDF.
 * </p>
 */
@Test
public void testAddEmptySignatureField() throws IOException
{
    try (   InputStream sourceStream = getClass().getResourceAsStream("test.pdf");
            OutputStream output = new FileOutputStream(new File(RESULT_FOLDER, "test-with-empty-sig-field.pdf")))
    {
        PDFont font = PDType1Font.HELVETICA;
        PDResources resources = new PDResources();
        resources.put(COSName.getPDFName("Helv"), font);

        PDDocument document = Loader.loadPDF(sourceStream);
        PDAcroForm acroForm = new PDAcroForm(document);
        acroForm.setDefaultResources(resources);
        document.getDocumentCatalog().setAcroForm(acroForm);

        PDRectangle rect = new PDRectangle(50, 750, 200, 50);

        PDAppearanceDictionary appearanceDictionary = new PDAppearanceDictionary();
        PDAppearanceStream appearanceStream = new PDAppearanceStream(document);
        appearanceStream.setBBox(rect.createRetranslatedRectangle());
        appearanceStream.setResources(resources);
        appearanceDictionary.setNormalAppearance(appearanceStream);
        PDPageContentStream contentStream = new PDPageContentStream(document, appearanceStream);
        contentStream.setStrokingColor(Color.BLACK);
        contentStream.setNonStrokingColor(Color.LIGHT_GRAY);
        contentStream.setLineWidth(2);
        contentStream.addRect(0, 0, rect.getWidth(), rect.getHeight());
        contentStream.fill();
        contentStream.moveTo(1 * rect.getHeight() / 4, 1 * rect.getHeight() / 4);
        contentStream.lineTo(2 * rect.getHeight() / 4, 3 * rect.getHeight() / 4);
        contentStream.moveTo(1 * rect.getHeight() / 4, 3 * rect.getHeight() / 4);
        contentStream.lineTo(2 * rect.getHeight() / 4, 1 * rect.getHeight() / 4);
        contentStream.moveTo(3 * rect.getHeight() / 4, 1 * rect.getHeight() / 4);
        contentStream.lineTo(rect.getWidth() - rect.getHeight() / 4, 1 * rect.getHeight() / 4);
        contentStream.stroke();
        contentStream.setNonStrokingColor(Color.DARK_GRAY);
        contentStream.beginText();
        contentStream.setFont(font, rect.getHeight() / 5);
        contentStream.newLineAtOffset(3 * rect.getHeight() / 4, -font.getBoundingBox().getLowerLeftY() * rect.getHeight() / 5000);
        contentStream.showText("Customer");
        contentStream.endText();
        contentStream.close();

        PDSignatureField signatureField = new PDSignatureField(acroForm);
        signatureField.setPartialName("SignatureField");
        PDPage page = document.getPage(0);

        PDAnnotationWidget widget = signatureField.getWidgets().get(0);
        widget.setAppearance(appearanceDictionary);
        widget.setRectangle(rect);
        widget.setPage(page);

        page.getAnnotations().add(widget);
        acroForm.getFields().add(signatureField);

        document.save(output);
        document.close();
    }
}