Java Code Examples for org.apache.pdfbox.rendering.PDFRenderer#renderImage()

public static BufferedImage create(PDDocument pdf, int pageIndex, float scale, String textToHighlight) {
    try {
        PDFRenderer renderer = new PDFRenderer(pdf);
        scale = scale * Toolkit.getDefaultToolkit().getScreenResolution() / 72.0f;
        BufferedImage img = renderer.renderImage(pageIndex, scale);
        if (textToHighlight != null) {
            Graphics2D gc = img.createGraphics();
            gc.setStroke(new BasicStroke(0.1f));
            gc.scale(scale, scale);
            PdfRenderer processor = new PdfRenderer(gc, textToHighlight);
            processor.setSortByPosition(true);
            processor.setStartPage(pageIndex + 1);
            processor.setEndPage(pageIndex + 1);
            try (DummyWriter writer = new DummyWriter()) {
                processor.writeText(pdf, writer);
            }
            gc.dispose();
        }
        return img;
    } catch (Exception exception) {
        Log.error(exception);
        return null;
    }
}
 

@Override
public Optional<BufferedImage> getThumbnail(MCRPath path, int size) throws IOException {
    try (InputStream fileIS = Files.newInputStream(path); PDDocument pdf = PDDocument.load(fileIS)) {
        final PDPage page = resolveOpenActionPage(pdf);
        float pdfWidth = page.getCropBox().getWidth();
        float pdfHeight = page.getCropBox().getHeight();
        final int newWidth = pdfWidth > pdfHeight ? (int) Math.ceil(size * pdfWidth / pdfHeight) : size;
        final float scale = newWidth / pdfWidth;

        PDFRenderer pdfRenderer = new PDFRenderer(pdf);
        BufferedImage pdfRender = pdfRenderer.renderImage(pdf.getPages().indexOf(page), scale);
        int imageType = MCRThumbnailUtils.getImageType(pdfRender);
        if (imageType == BufferedImage.TYPE_BYTE_BINARY || imageType == BufferedImage.TYPE_BYTE_GRAY) {
            BufferedImage thumbnail = new BufferedImage(pdfRender.getWidth(), pdfRender.getHeight(),
                imageType);
            Graphics g = thumbnail.getGraphics();
            g.drawImage(pdfRender, 0, 0, null);
            g.dispose();
            return Optional.of(thumbnail);
        }
        return Optional.of(pdfRender);
    }
}
 

/**
 * <a href="http://stackoverflow.com/questions/39689004/pdfbox-2-0-3-set-cropbox-using-textposition-coordinates">
 * PDFBox 2.0.3 Set cropBox using TextPosition coordinates
 * </a>
 * <br/>
 * <a href="http://downloadcenter.samsung.com/content/UM/201504/20150407095631744/ENG-US_NMATSCJ-1.103-0330.pdf">
 * ENG-US_NMATSCJ-1.103-0330.pdf
 * </a>
 * <p>
 * This test shows how to set the crop box on page twelve and render the cropped page as image.
 * </p>
 */
@Test
public void testSetCropBoxImgENG_US_NMATSCJ_1_103_0330() throws IOException
{
    try (   InputStream resource = getClass().getResourceAsStream("ENG-US_NMATSCJ-1.103-0330.pdf"))
    {
        PDDocument pdDocument = Loader.loadPDF(resource);
        PDPage page = pdDocument.getPage(12-1);
        page.setCropBox(new PDRectangle(40f, 680f, 510f, 100f));

        PDFRenderer renderer = new PDFRenderer(pdDocument);
        BufferedImage img = renderer.renderImage(12 - 1, 4f);
        ImageIOUtil.writeImage(img, new File(RESULT_FOLDER, "ENG-US_NMATSCJ-1.103-0330-page12cropped.jpg").getAbsolutePath(), 300);
        pdDocument.close();
    }
}
 

public static Image buildPDFPreview(int page, int zoom) {
    float newScale = ((float) zoom) / 100.0f;
    BufferedImage pageImage = null;
    
    try (PDDocument pdDocument = PDFService.getPDDocument()) {
        PDFRenderer pdfRenderer = new PDFRenderer(pdDocument);
        if (pdDocument.getNumberOfPages() >= page && page > 0){
            pageImage = pdfRenderer.renderImage(page - 1);
            int width = (int) (newScale * pageImage.getWidth());
            int height = (int) (newScale * pageImage.getHeight());
        
            return pageImage.getScaledInstance(width, height, SCALE_TYPE);
        }
        
                    
        return pageImage;
    } catch (IOException ex) {
        Exceptions.printStackTrace(ex);
    }
    
    return null;
}
 

public BufferedImage readPageAsImage(int page, ImageType imageType) {
    try {
        if (doc == null) {
            return null;
        }
        PDFRenderer renderer = new PDFRenderer(doc);
        BufferedImage image = renderer.renderImage(page, 1, imageType);
        return image;
    } catch (Exception e) {
        return null;
    }
}
 

public static BufferedImage page2image(File file, int page) {
    try {
        try ( PDDocument doc = PDDocument.load(file, null, AppVariables.pdfMemUsage)) {
            PDFRenderer renderer = new PDFRenderer(doc);
            BufferedImage image = renderer.renderImage(page, 1, ImageType.ARGB);
            doc.close();
            return image;
        }
    } catch (Exception e) {
        return null;
    }
}
 

public static BufferedImage page2image(File file, String password, int page,
        float scale, ImageType imageType) {
    try {
        try ( PDDocument doc = PDDocument.load(file, password, AppVariables.pdfMemUsage)) {
            PDFRenderer renderer = new PDFRenderer(doc);
            BufferedImage image = renderer.renderImage(page, scale, imageType);
            doc.close();
            return image;
        }
    } catch (Exception e) {
        return null;
    }
}
 

private static BufferedImage getRendering(DSSDocument dssDoc) throws IOException {
	try (InputStream is = dssDoc.openStream(); PDDocument doc = PDDocument.load(is)) {
		PDFRenderer renderer = new PDFRenderer(doc);
		return renderer.renderImage(0);
	}
}
 

/**
 * This method returns a Buffered Image as thumbnail if an initial page was set,
 * it will be return - if not the first page
 *
 * @param thumbnailSize - the size: size = max(width, height) 
 *                        a size < 0 will return the original size and centered parameter will be ignored
 * @param pdfFile       - the file from which the thumbnail will be taken
 * @param centered      - if true, a square (thumbnail with same width and
 *                      height) will be returned
 * @return a BufferedImage as thumbnail
 *
 * @throws IOException
 */
public static BufferedImage getThumbnail(int thumbnailSize, Path pdfFile, boolean centered) throws IOException {
    InputStream fileIS = Files.newInputStream(pdfFile);
    try (PDDocument pdf = PDDocument.load(fileIS)) {
        PDFRenderer pdfRenderer = new PDFRenderer(pdf);
        final PDPage page = resolveOpenActionPage(pdf);
        BufferedImage level1Image = pdfRenderer.renderImage(pdf.getPages().indexOf(page));
        if (thumbnailSize < 0) {
            return level1Image;
        }
        return scalePage(thumbnailSize, centered, level1Image);
    }
}