Java Code Examples for org.apache.pdfbox.pdmodel.PDResources#put()

private void processImagesFromResources(PDResources resources) throws IOException {
    for (COSName xObjectName : resources.getXObjectNames()) {
        PDXObject xObject = resources.getXObject(xObjectName);

        if (xObject instanceof PDFormXObject) {
            processImagesFromResources(((PDFormXObject) xObject).getResources());
        } else if (xObject instanceof PDImageXObject) {
            PDImageXObject img = (PDImageXObject) xObject;
            if (!img.getImage().getColorModel().hasAlpha())
                return;

            PDImageXObject cpy = makeImageObjectCopy(img);
            resources.put(xObjectName, cpy);
            imagesWereChanged = true;
        }
    }
}
 

@Override
public void createImageForm(PDResources imageFormResources, PDResources innerFormResource,
                            PDStream imageFormStream, PDRectangle bbox, AffineTransform at,
                            PDImageXObject img) throws IOException
{
    PDFormXObject imageForm = new PDFormXObject(imageFormStream);
    imageForm.setBBox(bbox);
    imageForm.setMatrix(at);
    imageForm.setResources(imageFormResources);
    imageForm.setFormType(1);

    imageFormResources.getCOSObject().setDirect(true);

    COSName imageFormName = COSName.getPDFName("n2");
    innerFormResource.put(imageFormName, imageForm);
    COSName imageName = imageFormResources.add(img, "img");
    pdfStructure.setImageForm(imageForm);
    pdfStructure.setImageFormName(imageFormName);
    pdfStructure.setImageName(imageName);
    LOG.info("Created image form");
}
 

private void validateAndEnsureAcroFormResources()
{
    // add font resources which might be available at the field 
    // level but are not at the AcroForm level to the AcroForm
    // to match Adobe Reader/Acrobat behavior        
    if (field.getAcroForm().getDefaultResources() == null)
    {
        return;
    }
    
    PDResources acroFormResources = field.getAcroForm().getDefaultResources();
    
    for (PDAnnotationWidget widget : field.getWidgets())
    {
        if (widget.getNormalAppearanceStream() != null && widget.getNormalAppearanceStream().getResources() != null)
        {
            PDResources widgetResources = widget.getNormalAppearanceStream().getResources();
            for (COSName fontResourceName : widgetResources.getFontNames())
            {
                try
                {
                    if (acroFormResources.getFont(fontResourceName) == null)
                    {
                        LOG.debug("Adding font resource " + fontResourceName + " from widget to AcroForm");
                        acroFormResources.put(fontResourceName, widgetResources.getFont(fontResourceName));
                    }
                }
                catch (IOException e)
                {
                    LOG.warn("Unable to match field level font with AcroForm font");
                }
            }
        }
    }
}
 

@Override
public void insertInnerFormToHolderResources(PDFormXObject innerForm,
                                             PDResources holderFormResources)
{
    holderFormResources.put(COSName.FRM, innerForm);
    pdfStructure.setInnerFormName(COSName.FRM);
    LOG.info("Now inserted inner form inside holder form");
}
 

@Override
public void createBackgroundLayerForm(PDResources innerFormResource, PDRectangle bbox)
         throws IOException
{
    // create blank n0 background layer form
    PDFormXObject n0Form = new PDFormXObject(pdfStructure.getTemplate().getDocument().createCOSStream());
    n0Form.setBBox(bbox);
    n0Form.setResources(new PDResources());
    n0Form.setFormType(1);
    innerFormResource.put(COSName.getPDFName("n0"), n0Form);
    LOG.info("Created background layer form");
}
 

@Override
public int handleCurrentPage() {
    int count = 0;
    try {
        PDPage sourcePage = doc.getPage(currentParameters.currentPage - 1);  // 0-based
        PDResources pdResources = sourcePage.getResources();
        pdResources.getXObjectNames();
        Iterable<COSName> iterable = pdResources.getXObjectNames();
        if (iterable == null) {
            return 0;
        }
        Iterator<COSName> pageIterator = iterable.iterator();
        while (pageIterator.hasNext()) {
            if (task.isCancelled()) {
                break;
            }
            COSName cosName = pageIterator.next();
            if (!pdResources.isImageXObject(cosName)) {
                continue;
            }
            PDImageXObject pdxObject = (PDImageXObject) pdResources.getXObject(cosName);
            BufferedImage sourceImage = pdxObject.getImage();
            PDImageXObject newObject = null;
            if (format == PdfImageFormat.Tiff) {
                ImageBinary imageBinary = new ImageBinary(sourceImage, threshold);
                imageBinary.setIsDithering(ditherCheck.isSelected());
                BufferedImage newImage = imageBinary.operate();
                newImage = ImageBinary.byteBinary(newImage);
                newObject = CCITTFactory.createFromImage(doc, newImage);

            } else if (format == PdfImageFormat.Jpeg) {
                newObject = JPEGFactory.createFromImage(doc, sourceImage, jpegQuality / 100f);
            }
            if (newObject != null) {
                pdResources.put(cosName, newObject);
                count++;
            }
            if (isPreview) {
                break;
            }
        }
        if (copyAllCheck.isSelected()) {
            targetDoc.getPage(currentParameters.currentPage - 1).setResources(pdResources);
        } else {
            targetDoc.addPage(sourcePage);
        }
    } catch (Exception e) {
        logger.error(e.toString());
    }
    return count;

}
 

/**
 * <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();
    }
}