Thank you Doug. You have used JPEGFactory. Curious to know what class would be used if I also had PNG images along with JPG images. Couldn't find anything called a PNGFactory.
On Tue, Oct 11, 2016 at 1:47 AM, Doug Smith <[email protected]> wrote: > Hi Anshul, > > I made a few changes to make this work. First, I used a modified technique > to scale the image to the right dimensions. I also used the PDFBox > JPEGFactory instead of ImageIO to read the image. Lastly, I wrapped > everything in try-with-resources blocks to make sure what you open is > closed even if there is an exception. > > > public void convertImgToPDF(String imagePath, String fileName, String > destDir) > throws IOException { > try (PDDocument document = new PDDocument(); > InputStream in = new FileInputStream(imagePath)) { > PDImageXObject img = JPEGFactory.createFromStream(document, in); > Dimension scaledSize = getScaledDimension(img.getWidth(), > img.getHeight()); > PDPage page = new PDPage(new > PDRectangle(scaledSize.width, scaledSize.height)); > document.addPage(page); > try (PDPageContentStream contentStream = new > PDPageContentStream(document, page)) { > contentStream.drawImage(img, 0, 0, scaledSize.width, > scaledSize.height); > } > document.save(destDir + "/" + fileName + ".pdf"); > } > } > > // 8.5" * 72 points per inch, PDF Units > private static final int MIN_BOUNDARY = 612; > > /** > * Using this method to scale images to PDF units, maintaining orientation > as > * landscape or portrait. > * > * Inspired by a stack overflow post > * http://stackoverflow.com/questions/23223716/scaled- > image-blurry-in-pdfbox > */ > private Dimension getScaledDimension(final int originalWidth, final > int originalHeight) { > int newWidth; > int newHeight; > > if (originalWidth < originalHeight) { > newWidth = MIN_BOUNDARY; > // scale height to maintain aspect ratio > newHeight = (newWidth * originalHeight) / originalWidth; > } > else { > newHeight = MIN_BOUNDARY; > // scale width to maintain aspect ratio > newWidth = (newHeight * originalWidth) / originalHeight; > } > > return new Dimension(newWidth, newHeight); > } > > > I hope that helps, > > Doug > -- > http://dougsmithdev.com > > On Mon, Oct 10, 2016 at 12:49 PM, Anshul Kayastha < > [email protected]> > wrote: > > > I am using PDFBox v2 to convert jpg images to PDF. JPG image is already > on > > the filesystem, so I just pick it up and convert it to PDF. Below is my > code > > > > public void convertImgToPDF(String imagePath, String fileName, String > destDir) throws IOException { > > PDDocument document = new PDDocument(); > > InputStream in = new FileInputStream(imagePath); > > BufferedImage bimg = ImageIO.read(in); > > float width = bimg.getWidth(); > > float height = bimg.getHeight(); > > PDPage page = new PDPage(new PDRectangle(width, height)); > > document.addPage(page); > > PDImageXObject img = PDImageXObject.createFromFile(imagePath, > document); > > PDPageContentStream contentStream = new > PDPageContentStream(document, page); > > contentStream.drawImage(img, 0, 0); > > contentStream.close(); > > in.close(); > > document.save(destDir + "/" + fileName + ".pdf"); > > document.close(); > > } > > > > > > This code does the conversion just fine. However, I have observed the > > following in converted PDFs > > > > 1. When I open a converted PDF, it opens very slowly (in Acrobat > > reader). It seems as it PDF is opening pixel by pixel. If I open any > other > > PDF, it opens fine. > > 2. The default size in acrobat reader is shown as a smaller value > > (like 15% or 26%, screenshot attached) for converted PDFs. Even > though it > > covers 100% of the screen (15% should have implied that I see a much > > smaller image, but that is not the case). When I change the size to > 100%, I > > see a highly blurred image which is much larger than the actual image > and I > > have to scroll left/right and top/down to see the complete image. > > > > Both these observations make me feel that for some reason the PDF that is > > getting generated is a much higher resolution than it should have been. > > Would that be a fair statement? If so, how can I correct this? > > > > Also, attached is a sample image that I am trying to convert. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [email protected] > > For additional commands, e-mail: [email protected] > > >
