Example usage for org.apache.pdfbox.rendering PDFRenderer renderImageWithDPI

Introduction

In this page you can find the example usage for org.apache.pdfbox.rendering PDFRenderer renderImageWithDPI.

Prototype

public BufferedImage renderImageWithDPI(int pageIndex, float dpi, ImageType imageType) throws IOException 

Source Link

Document

Returns the given page as an RGB image at the given DPI.

Usage

From source file:ddf.catalog.transformer.input.pdf.PdfThumbnailGeneratorImpl.java

License:Open Source License

@Override
public Optional<byte[]> apply(PDDocument pdfDocument) throws IOException {
    PDFRenderer pdfRenderer = new PDFRenderer(pdfDocument);

    if (pdfDocument.getNumberOfPages() < 1) {
        return Optional.empty();
    }//w w w  .ja v a  2 s .c  om

    BufferedImage image = pdfRenderer.renderImageWithDPI(0, RESOLUTION_DPI, ImageType.RGB);

    int largestDimension = Math.max(image.getHeight(), image.getWidth());
    float scalingFactor = IMAGE_HEIGHTWIDTH / largestDimension;
    int scaledHeight = (int) (image.getHeight() * scalingFactor);
    int scaledWidth = (int) (image.getWidth() * scalingFactor);

    BufferedImage scaledImage = new BufferedImage(scaledWidth, scaledHeight, BufferedImage.TYPE_INT_RGB);
    Graphics2D graphics = scaledImage.createGraphics();
    graphics.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
    graphics.drawImage(image, 0, 0, scaledWidth, scaledHeight, null);
    graphics.dispose();

    try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
        ImageIOUtil.writeImage(scaledImage, FORMAT_NAME, outputStream, RESOLUTION_DPI, IMAGE_QUALITY);
        return Optional.of(outputStream.toByteArray());
    }
}

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From source file:es.rickyepoderi.pdfimages.Converter.java

License:Open Source License

/**
 * Method that converts a PDF file in a series of images. 
 * /*from w  w w. j  a  v a  2  s . c o m*/
 * @param pdfFile The PDF file to read
 * @param prefix The prefix of the images to write
 * @param imgFormat The image format ("jpg", "png",...) used by ImageIO
 * @param dpi The DPI of the images to render pages
 * @param type The type of the image (RGB, GREY,...)
 * @throws IOException Some error generating the images
 */
public void pdf2Images(File pdfFile, String prefix, String suffix, int dpi, ImageType type) throws IOException {
    PDDocument document = PDDocument.load(pdfFile);
    PDFRenderer pdfRenderer = new PDFRenderer(document);
    int pad = (int) Math.ceil(Math.log10(document.getNumberOfPages()));
    if (pad == 0) {
        pad = 1;
    }
    String format = String.format("%s.%%0%dd.%s", prefix, pad, suffix);
    for (int i = 0; i < document.getNumberOfPages(); i++) {
        BufferedImage image = pdfRenderer.renderImageWithDPI(i, dpi, type);
        ImageIO.write(image, suffix, new File(String.format(format, i)));
    }
}

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From source file:idp.pdf_converter.java

public static void pdf_converter(File file) throws IOException {
    PDDocument document = PDDocument.load(file);
    PDFRenderer pdfRenderer = new PDFRenderer(document);
    String path = System.getProperty("user.dir") + "\\src\\main\\temp\\images\\";
    for (int page = 0; page < document.getNumberOfPages(); ++page) {
        BufferedImage bim = pdfRenderer.renderImageWithDPI(page, 300, ImageType.GRAY);
        ImageIOUtil.writeImage(bim, path + file.getName() + "-" + (page + 1) + ".png", 300);
    }//from   w  w w  .  ja  v  a  2  s  .  c o  m
    document.close();
}

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From source file:jgnash.report.pdf.Report.java

License:Open Source License

/**
 * Renders the PDF report to a raster image
 *
 * @param pageIndex page index//from  w w w. ja v a2 s  .  c om
 * @param dpi       DPI for the image
 * @return the image
 * @throws IOException IO exception
 */
public BufferedImage renderImage(final int pageIndex, final int dpi) throws IOException {
    final PDFRenderer pdfRenderer = new PDFRenderer(pdfDocument);
    return pdfRenderer.renderImageWithDPI(pageIndex, dpi, ImageType.RGB);
}

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From source file:merge_split.MergeSplit.java

License:Apache License

private void ConvertButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_ConvertButtonActionPerformed
    PDDocument document = null;/*from  w  w  w.  ja v a 2 s  . c  o  m*/
    try {
        document = PDDocument.load(new File((String) ConvertFileField.getText()), convertcode);
    } catch (IOException ex) {
        JOptionPane.showMessageDialog(null, "Problem opening pdf.", "Problem opening pdf",
                JOptionPane.WARNING_MESSAGE);
    }
    TreeSet tree = findPages((String) ConvertPagesField.getText());

    PDFRenderer pdfRenderer = new PDFRenderer(document);
    for (int page = 0; page < document.getNumberOfPages(); ++page) {
        BufferedImage bim = null;
        try {
            bim = pdfRenderer.renderImageWithDPI(page, 300, ImageType.RGB);
        } catch (IOException ex) {
            JOptionPane.showMessageDialog(null, "Problem rendering image.", "Problem rendering image",
                    JOptionPane.WARNING_MESSAGE);

        }

        // suffix in filename will be used as the file format
        String destination = ConvertDestinationField.getText() + "\\" + ConvertNameField.getText();
        String image = ".png";
        if (pngbutton.isSelected()) {
            image = ".png";
        } else if (bmpbutton.isSelected()) {
            image = ".bmp";
        } else if (gifbutton.isSelected()) {
            image = ".gif";
        } else if (jpgbutton.isSelected()) {
            image = ".jpg";
        }
        try {
            if (tree.contains(page + 1)) {

                ImageIOUtil.writeImage(bim, destination + "-" + (page + 1) + image, 300);
            }
        } catch (IOException ex) {
            JOptionPane.showMessageDialog(null, "Problem output image.", "Problem output image",
                    JOptionPane.WARNING_MESSAGE);
            java.util.logging.Logger.getLogger(MergeSplit.class.getName()).log(java.util.logging.Level.SEVERE,
                    null, ex);

        }
    }
    try {
        document.close();
    } catch (IOException ex) {
        Logger.getLogger(MergeSplit.class.getName()).log(Level.SEVERE, null, ex);

    }
}

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From source file:model.util.pdf.PDFUtils.java

License:Apache License

/**
 * Infamous main method./*w  ww .  j  av  a 2  s. co  m*/
 * Adapted by Julius Huelsmann.
 * 
 * @author Ben Litchfield
 *
 * @param args Command line arguments, should be one and a reference to a file.
 *
 * @throws IOException If there is an error parsing the document.
 */
public static BufferedImage pdf2image(final String[] _parameters) throws IOException {

    // suppress the Dock icon on OS X if called from outside
    // the paint - project.
    System.setProperty("apple.awt.UIElement", "true");

    String password = "";
    String pdfFile = null;
    String outputPrefix = null;
    String imageFormat = "jpg";
    int startPage = 1;
    int endPage = Integer.MAX_VALUE;
    String color = "rgb";
    int dpi;
    float cropBoxLowerLeftX = 0;
    float cropBoxLowerLeftY = 0;
    float cropBoxUpperRightX = 0;
    float cropBoxUpperRightY = 0;
    boolean showTime = false;
    try {
        dpi = Toolkit.getDefaultToolkit().getScreenResolution();
    } catch (HeadlessException e) {
        dpi = 96;
    }
    for (int i = 0; i < _parameters.length; i++) {
        if (_parameters[i].equals(PASSWORD)) {
            i++;
            if (i >= _parameters.length) {
                usage();
            }
            password = _parameters[i];
        } else if (_parameters[i].equals(START_PAGE)) {
            i++;
            if (i >= _parameters.length) {
                usage();
            }
            startPage = Integer.parseInt(_parameters[i]);
        } else if (_parameters[i].equals(END_PAGE)) {
            i++;
            if (i >= _parameters.length) {
                usage();
            }
            endPage = Integer.parseInt(_parameters[i]);
        } else if (_parameters[i].equals(PAGE)) {
            i++;
            if (i >= _parameters.length) {
                usage();
            }
            startPage = Integer.parseInt(_parameters[i]);
            endPage = Integer.parseInt(_parameters[i]);
        } else if (_parameters[i].equals(IMAGE_TYPE) || _parameters[i].equals(FORMAT)) {
            i++;
            imageFormat = _parameters[i];
        } else if (_parameters[i].equals(OUTPUT_PREFIX) || _parameters[i].equals(PREFIX)) {
            i++;
            outputPrefix = _parameters[i];
        } else if (_parameters[i].equals(COLOR)) {
            i++;
            color = _parameters[i];
        } else if (_parameters[i].equals(RESOLUTION) || _parameters[i].equals(DPI)) {
            i++;
            dpi = Integer.parseInt(_parameters[i]);
        } else if (_parameters[i].equals(CROPBOX)) {
            i++;
            cropBoxLowerLeftX = Float.valueOf(_parameters[i]);
            i++;
            cropBoxLowerLeftY = Float.valueOf(_parameters[i]);
            i++;
            cropBoxUpperRightX = Float.valueOf(_parameters[i]);
            i++;
            cropBoxUpperRightY = Float.valueOf(_parameters[i]);
        } else if (_parameters[i].equals(TIME)) {
            showTime = true;
        } else {
            if (pdfFile == null) {
                pdfFile = _parameters[i];
            }
        }
    }
    if (pdfFile == null) {
        usage();
    } else {
        if (outputPrefix == null) {
            outputPrefix = pdfFile.substring(0, pdfFile.lastIndexOf('.'));
        }

        PDDocument document = null;
        try {
            document = PDDocument.load(new File(pdfFile), password);

            ImageType imageType = null;
            if ("bilevel".equalsIgnoreCase(color)) {
                imageType = ImageType.BINARY;
            } else if ("gray".equalsIgnoreCase(color)) {
                imageType = ImageType.GRAY;
            } else if ("rgb".equalsIgnoreCase(color)) {
                imageType = ImageType.RGB;
            } else if ("rgba".equalsIgnoreCase(color)) {
                imageType = ImageType.ARGB;
            }

            if (imageType == null) {
                System.err.println("Error: Invalid color.");
                System.exit(2);
            }

            //if a CropBox has been specified, update the CropBox:
            //changeCropBoxes(PDDocument document,float a, float b, float c,float d)
            if (cropBoxLowerLeftX != 0 || cropBoxLowerLeftY != 0 || cropBoxUpperRightX != 0
                    || cropBoxUpperRightY != 0) {
                changeCropBox(document, cropBoxLowerLeftX, cropBoxLowerLeftY, cropBoxUpperRightX,
                        cropBoxUpperRightY);
            }

            long startTime = System.nanoTime();

            // render the pages
            boolean success = true;
            endPage = Math.min(endPage, document.getNumberOfPages());
            PDFRenderer renderer = new PDFRenderer(document);
            for (int i = startPage - 1; i < endPage;) {
                BufferedImage image = renderer.renderImageWithDPI(i, dpi, imageType);
                String fileName = outputPrefix + (i + 1) + "." + imageFormat;
                success &= ImageIOUtil.writeImage(image, fileName, dpi);
                return image;
            }

            // performance stats
            long endTime = System.nanoTime();
            long duration = endTime - startTime;
            int count = 1 + endPage - startPage;
            if (showTime) {
                System.err.printf("Rendered %d page%s in %dms\n", count, count == 1 ? "" : "s",
                        duration / 1000000);
            }

            if (!success) {
                System.err.println("Error: no writer found for image format '" + imageFormat + "'");
                System.exit(1);
            }
        } finally {
            if (document != null) {
                document.close();
            }
        }
        return null;
    }
    return null;
}

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From source file:model.util.pdf.PDFUtils.java

License:Apache License

public static BufferedImage pdf2image(PDDocument _document, int _pageNumber) {

    int dpi = 0;//from w  ww  . j  av a  2  s.c  om
    try {
        dpi = Toolkit.getDefaultToolkit().getScreenResolution();
        dpi = 130;
    } catch (HeadlessException e) {
        dpi = 96;
        dpi = 130;
    }
    PDFRenderer renderer = new PDFRenderer(_document);
    BufferedImage image;
    try {
        image = renderer.renderImageWithDPI(_pageNumber, dpi, ImageType.RGB);
        return image;
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
        return null;
    }

}

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From source file:net.betzel.fop.pdf.viewer.FXMLController.java

License:Apache License

private void createImages(FileStreamSources fileStreamSources) {
    if (Platform.isFxApplicationThread()) {
        final Task<List<BufferedImage>> createImagesTask = new Task<List<BufferedImage>>() {
            @Override//from   www .  ja v  a  2  s  .  c o m
            protected List<BufferedImage> call() throws Exception {

                ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
                List<BufferedImage> bufferedImages = new ArrayList();
                FOUserAgent userAgent = fopFactory.newFOUserAgent();
                userAgent.getEventBroadcaster().addEventListener(fopEventListener);
                Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF, userAgent, byteArrayOutputStream);
                Transformer transformer = transformerFactory.newTransformer(fileStreamSources.getXslSource());
                transformer.setErrorListener(xmlTransformErrorListener);
                Result result = new SAXResult(fop.getDefaultHandler());
                transformer.transform(fileStreamSources.getXmlSource(), result);
                FormattingResults foResults = fop.getResults();
                List pageSequences = foResults.getPageSequences();
                for (java.util.Iterator it = pageSequences.iterator(); it.hasNext();) {
                    PageSequenceResults pageSequenceResults = (PageSequenceResults) it.next();
                    logging.appendText("PageSequence "
                            + (String.valueOf(pageSequenceResults.getID()).length() > 0
                                    ? pageSequenceResults.getID()
                                    : "<no id>")
                            + " generated " + pageSequenceResults.getPageCount() + " pages.\n");
                }
                try (PDDocument pdDocument = PDDocument
                        .load(new ByteArrayInputStream(byteArrayOutputStream.toByteArray()))) {
                    PDFRenderer pdfRenderer = new PDFRenderer(pdDocument);
                    int pageCounter = 0;
                    for (PDPage pdPage : pdDocument.getPages()) {
                        bufferedImages.add(pdfRenderer.renderImageWithDPI(pageCounter, 150, ImageType.RGB));
                        pageCounter++;
                    }
                }
                return bufferedImages;
            }
        };
        createImagesTask.setOnSucceeded((WorkerStateEvent event) -> {
            Platform.runLater(() -> {
                images.clear();
                images.addAll(createImagesTask.getValue());
            });
        });
        createImagesTask.setOnFailed((WorkerStateEvent event) -> {
            Platform.runLater(() -> {
                scanProgressDialog.close();
                logging.appendText("Error creating images from PDF\n");
                reentrantLock.unlock();
                images.clear();
            });
        });
        backgoundExecutor.submit(createImagesTask);
    }
}

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From source file:org.haplo.component.pdfbox.PDF.java

License:Mozilla Public License

/**
 * Render the PDF as an image/* ww  w.  j av a  2 s  .  com*/
 */
public void render(String outFilename, String outFormat, int page, int outWidth, int outHeight)
        throws IOException {
    BufferedImage img = null;
    try {
        PDPage pdfPage = this.pdf.getPage(page - 1);
        PDRectangle cropBox = pdfPage.getCropBox();
        int pageWidth = (int) cropBox.getWidth();
        int pageHeight = (int) cropBox.getHeight();
        if (pageHeight <= 0) {
            pageHeight = 1;
        }

        int resolution = (96 * outHeight) / pageHeight;
        if (resolution < 4) {
            resolution = 4;
        }
        if (resolution > 1000) {
            resolution = 1000;
        }
        if (outHeight < 100 || outWidth < 100) {
            resolution *= 2;
        }

        PDFRenderer pdfRenderer = new PDFRenderer(this.pdf);

        img = pdfRenderer.renderImageWithDPI(page - 1, resolution,
                outFormat.equals("png") ? ImageType.ARGB : ImageType.RGB);
    } catch (Exception e) {
        Logger.getLogger("org.haplo.app").error("Error rendering PDF: " + e.toString());
        throw new RuntimeException("Couldn't render PDF page", e);
    }

    // Did it convert? (most likely cause of null return is requested a page which didn't exist)
    if (img == null) {
        throw new RuntimeException("Failed to render PDF - did the requested page exist?");
    }

    // Scale the image to the right size
    BufferedImage original = null;
    if (img.getWidth() != outWidth || img.getHeight() != outHeight) {
        original = img;
        Image scaled = img.getScaledInstance(outWidth, outHeight, Image.SCALE_SMOOTH);
        img = new BufferedImage(outWidth, outHeight, original.getType());
        Graphics2D graphics = img.createGraphics();
        graphics.setBackground(Color.WHITE);
        graphics.clearRect(0, 0, outWidth, outHeight);
        graphics.drawImage(scaled, 0, 0, null);
        graphics.dispose();
        scaled.flush();
    }

    // Write the image to a file
    ImageIO.write(img, outFormat, new File(outFilename));

    // Free resources
    img.flush();
    if (original != null) {
        original.flush();
    }
}

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From source file:org.qifu.util.PdfConvertUtils.java

License:Apache License

public static List<File> toImageFiles(File pdfFile, int resolution) throws Exception {
    PDDocument document = PDDocument.load(pdfFile);
    PDFRenderer pdfRenderer = new PDFRenderer(document);
    /*/*w w w  .ja  va 2  s.co  m*/
    List<PDPage> pages = new LinkedList<PDPage>();
    for (int i=0; i < document.getDocumentCatalog().getPages().getCount(); i++) {
       pages.add( document.getDocumentCatalog().getPages().get(i) );
    }
    */
    File tmpDir = new File(Constants.getWorkTmpDir() + "/" + PdfConvertUtils.class.getSimpleName() + "/"
            + System.currentTimeMillis() + "/");
    FileUtils.forceMkdir(tmpDir);
    List<File> files = new LinkedList<File>();
    //int len = String.valueOf(pages.size()+1).length();
    int len = String.valueOf(document.getDocumentCatalog().getPages().getCount() + 1).length();
    //for (int i=0; i<pages.size(); i++) {
    for (int i = 0; i < document.getDocumentCatalog().getPages().getCount(); i++) {
        String name = StringUtils.leftPad(String.valueOf(i + 1), len, "0");
        BufferedImage bufImage = pdfRenderer.renderImageWithDPI(i, resolution, ImageType.RGB);
        File imageFile = new File(tmpDir.getPath() + "/" + name + ".png");
        FileOutputStream fos = new FileOutputStream(imageFile);
        ImageIOUtil.writeImage(bufImage, "png", fos, resolution);
        fos.flush();
        fos.close();
        files.add(imageFile);
    }
    document.close();
    tmpDir = null;
    return files;
}

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