You need to write a .Net class that inherits PageDrawer and overrides several of its methods using the .Net drawing library -- System.Graphics.Drawing, iirc.
I did this very successfully for a company I worked for and it's in their product today ... so the concept is sound. The details escape me right now ... and I couldn't really share the code I created for them anyway. On Thu, Jun 6, 2013 at 6:44 AM, blogrongchaua . < [email protected]> wrote: > Hi, > I would like to use PDFBox for converting PDF to Image in .NET > application. With help of IKVM version 7.2.4630.5, I have successfully > convert PDFBox version 1.8.2 into .dll file. However when I try to convert > the first page of PDF to image, I can't get a correct result. > > First, I try to make conversion with PDFImageWriter > > > PDDocument pdDocument = PDDocument.load("1.pdf"); > PDFImageWriter pdfImageWriter = new PDFImageWriter(); > bool result = pdfImageWriter.writeImage(pdDocument, "jpg", "", 1, 1, > "myfilename", BufferedImage.TYPE_INT_RGB, > Toolkit.getDefaultToolkit().getScreenResolution()); > if (result) > Console.WriteLine("successful"); > else > Console.WriteLine("failed"); > > But I got a NullReferenceException. Then I take a look at source code of > PDFBox and try not to use PDFImageWriter with code listing like following > > PDPage page = (PDPage)pdDocument.getDocumentCatalog().getAllPages().get(0); > BufferedImage bufferedImage = > page.convertToImage(BufferedImage.TYPE_INT_ARGB, > Toolkit.getDefaultToolkit().getScreenResolution()); > java.io.File file = new java.io.File("1.png"); > ImageIO.write(bufferedImage, "png", file); > Console.WriteLine("done"); > > It works fine but when I see the converted image. The text was not > displayed correctly. The whole text is getting much more smaller. > > Would you please give me some hints so that I can make the text showing > correctly. > > I attached here the .pdf file, converted image. I also made a test project > in Visual Studio but it's large to attach in email (the project contains > IKVM dll and converted PDFBox 1.8.2 ), please download at following link > http://hintdesk.com/Web/Tmp/TestPdfBox.zip . > > Thank you. > > Regards, > >
