Java Code Examples for org.apache.pdfbox.pdmodel.graphics.form.PDFormXObject#setResources()

@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");
}
 

@Override
public void createHolderForm(PDResources holderFormResources, PDStream holderFormStream,
                             PDRectangle bbox)
{
    PDFormXObject holderForm = new PDFormXObject(holderFormStream);
    holderForm.setResources(holderFormResources);
    holderForm.setBBox(bbox);
    holderForm.setFormType(1);
    pdfStructure.setHolderForm(holderForm);
    LOG.info("Holder form has been created");

}
 

@Override
public void createInnerForm(PDResources innerFormResources,
                            PDStream innerFormStream,
                            PDRectangle bbox)
{
    PDFormXObject innerForm = new PDFormXObject(innerFormStream);
    innerForm.setResources(innerFormResources);
    innerForm.setBBox(bbox);
    innerForm.setFormType(1);
    pdfStructure.setInnerForm(innerForm);
    LOG.info("Another form (inner form - it will be inside holder form) has been created");
}
 

@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");
}
 

private COSName createOverlayXObject(PDPage page, LayoutPage layoutPage)
{
    PDFormXObject xobjForm = new PDFormXObject(layoutPage.overlayContentStream);
    xobjForm.setResources(new PDResources(layoutPage.overlayResources));
    xobjForm.setFormType(1);
    xobjForm.setBBox(layoutPage.overlayMediaBox.createRetranslatedRectangle());
    AffineTransform at = new AffineTransform();
    switch (layoutPage.overlayRotation)
    {
        case 90:
            at.translate(0, layoutPage.overlayMediaBox.getWidth());
            at.rotate(Math.toRadians(-90));
            break;
        case 180:
            at.translate(layoutPage.overlayMediaBox.getWidth(), layoutPage.overlayMediaBox.getHeight());
            at.rotate(Math.toRadians(-180));
            break;
        case 270:
            at.translate(layoutPage.overlayMediaBox.getHeight(), 0);
            at.rotate(Math.toRadians(-270));
            break;
        default:
            break;
    }
    xobjForm.setMatrix(at);
    PDResources resources = page.getResources();
    return resources.add(xobjForm, "OL");
}
 

/**
 * Imports a page from some PDF file as a Form XObject so it can be placed on another page
 * in the target document.
 * <p>
 * You may want to call {@link #wrapInSaveRestore(PDPage) wrapInSaveRestore(PDPage)} before invoking the Form XObject to
 * make sure that the graphics state is reset.
 * 
 * @param sourceDoc the source PDF document that contains the page to be copied
 * @param page the page in the source PDF document to be copied
 * @return a Form XObject containing the original page's content
 * @throws IOException if an I/O error occurs
 */
public PDFormXObject importPageAsForm(PDDocument sourceDoc, PDPage page) throws IOException
{
    importOcProperties(sourceDoc);

    PDStream newStream = new PDStream(targetDoc, page.getContents(), COSName.FLATE_DECODE);
    PDFormXObject form = new PDFormXObject(newStream);

    //Copy resources
    PDResources pageRes = page.getResources();
    PDResources formRes = new PDResources();
    cloner.cloneMerge(pageRes, formRes);
    form.setResources(formRes);

    //Transfer some values from page to form
    transferDict(page.getCOSObject(), form.getCOSObject(), PAGE_TO_FORM_FILTER, true);

    Matrix matrix = form.getMatrix();
    AffineTransform at = matrix.createAffineTransform();
    PDRectangle mediaBox = page.getMediaBox();
    PDRectangle cropBox = page.getCropBox();
    PDRectangle viewBox = (cropBox != null ? cropBox : mediaBox);

    //Handle the /Rotation entry on the page dict
    int rotation = page.getRotation();

    //Transform to FOP's user space
    //at.scale(1 / viewBox.getWidth(), 1 / viewBox.getHeight());
    at.translate(mediaBox.getLowerLeftX() - viewBox.getLowerLeftX(),
            mediaBox.getLowerLeftY() - viewBox.getLowerLeftY());
    switch (rotation)
    {
    case 90:
        at.scale(viewBox.getWidth() / viewBox.getHeight(), viewBox.getHeight() / viewBox.getWidth());
        at.translate(0, viewBox.getWidth());
        at.rotate(-Math.PI / 2.0);
        break;
    case 180:
        at.translate(viewBox.getWidth(), viewBox.getHeight());
        at.rotate(-Math.PI);
        break;
    case 270:
        at.scale(viewBox.getWidth() / viewBox.getHeight(), viewBox.getHeight() / viewBox.getWidth());
        at.translate(viewBox.getHeight(), 0);
        at.rotate(-Math.PI * 1.5);
        break;
    default:
        //no additional transformations necessary
    }
    //Compensate for Crop Boxes not starting at 0,0
    at.translate(-viewBox.getLowerLeftX(), -viewBox.getLowerLeftY());
    if (!at.isIdentity())
    {
        form.setMatrix(at);
    }

    BoundingBox bbox = new BoundingBox();
    bbox.setLowerLeftX(viewBox.getLowerLeftX());
    bbox.setLowerLeftY(viewBox.getLowerLeftY());
    bbox.setUpperRightX(viewBox.getUpperRightX());
    bbox.setUpperRightY(viewBox.getUpperRightY());
    form.setBBox(new PDRectangle(bbox));

    return form;
}
 

@Override
public void draw() throws IOException {
	try (PDDocument doc = new PDDocument(); ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
		
		PDPage originalPage = document.getPage(parameters.getPage() - 1);
		SignatureFieldDimensionAndPositionBuilder dimensionAndPositionBuilder = 
				new SignatureFieldDimensionAndPositionBuilder(parameters, originalPage, pdFont);
		SignatureFieldDimensionAndPosition dimensionAndPosition = dimensionAndPositionBuilder.build();
		// create a new page
		PDPage page = new PDPage(originalPage.getMediaBox());
		doc.addPage(page);
		PDAcroForm acroForm = new PDAcroForm(doc);
           doc.getDocumentCatalog().setAcroForm(acroForm);
           PDSignatureField signatureField = new PDSignatureField(acroForm);
           PDAnnotationWidget widget = signatureField.getWidgets().get(0);
           List<PDField> acroFormFields = acroForm.getFields();
           acroForm.setSignaturesExist(true);
           acroForm.setAppendOnly(true);
           acroForm.getCOSObject().setDirect(true);
           acroFormFields.add(signatureField);

           PDRectangle rectangle = getPdRectangle(dimensionAndPosition, page);
           widget.setRectangle(rectangle);
           
           PDStream stream = new PDStream(doc);
           PDFormXObject form = new PDFormXObject(stream);
           PDResources res = new PDResources();
           form.setResources(res);
           form.setFormType(1);
           
           form.setBBox(new PDRectangle(rectangle.getWidth(), rectangle.getHeight()));
           
           PDAppearanceDictionary appearance = new PDAppearanceDictionary();
           appearance.getCOSObject().setDirect(true);
           PDAppearanceStream appearanceStream = new PDAppearanceStream(form.getCOSObject());
           appearance.setNormalAppearance(appearanceStream);
           widget.setAppearance(appearance);
           
           try (PDPageContentStream cs = new PDPageContentStream(doc, appearanceStream))
           {
           	rotateSignature(cs, rectangle, dimensionAndPosition);
           	setFieldBackground(cs, parameters.getBackgroundColor());
           	setText(cs, dimensionAndPosition, parameters);
           	setImage(cs, doc, dimensionAndPosition, parameters.getImage());
           }
           
           doc.save(baos);
           
           try (ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray()))
           {
       		signatureOptions.setVisualSignature(bais);
       		signatureOptions.setPage(parameters.getPage() - 1);
           }
           
       }
}