The basic problem is that IKVM doesn't translate the Java graphics stuff to .Net graphics.
What you have to do is create a .Net class that inherits from PageDrawer and override its functions using .Net graphics objects instead of the Java graphics objects. Daniel Wilson On Tue, Dec 15, 2009 at 4:18 PM, Patrick Linskey <[email protected]> wrote: > Hi, > > I'm using PDFBox from a C# app via IKVM. Stripping the text out of a PDF > works great, but I've been unable to render a page as an image. > > I'm using PDFBox 0.7.3 with IKVM 0.40.0.1; I built my own FontBox and > PDFBox DLLs as outlined below [1]. My test script fails with a > NotImplementedException [2]. > > Does anyone know if I should expect PDFBox + IKVM to be able to generate > images of pages? If so, does anything jump out as particularly wrong about > my configuration, or do you have any pointers to a happy configuration? > > Thanks, > > -Patrick > > > [1] DLL build process: > > references="-reference:IKVM.AWT.WinForms.dll > -reference:IKVM.OpenJDK.Core.dll -reference:IKVM.OpenJDK.Misc.dll > -reference:IKVM.OpenJDK.SwingAWT.dll -reference:IKVM.OpenJDK.Text.dll > -reference:IKVM.OpenJDK.Util.dll" > > ikvmc $references -target:library -out:FontBox.dll FontBox-0.1.0-dev.jar > ikvmc -target:library -reference:FontBox.dll -out:PDFBox.dll > PDFBox-0.7.3.jar > > [2] NotImplementedException: > Test method PdfViewerTests.TextOnlyPdfToImage threw exception: > System.NotImplementedException: The method or operation is not > implemented.. > org.pdfbox.util.PDFStreamEngine.processSubStream(PDPage aPage, PDResources > resources, COSStream cosStream) > org.pdfbox.util.PDFStreamEngine.processStream(PDPage aPage, PDResources > resources, COSStream cosStream) > org.pdfbox.pdfviewer.PageDrawer.drawPage(Graphics g, PDPage p, Dimension > pageDimension) > org.pdfbox.pdmodel.PDPage.convertToImage() > ClaimCharter.View.Pdf.PdfPagePanel.PageToBytes() in > C:\Users\admin\Desktop\document-charter\client\ClaimCharter\View\Pdf\PDFPagePanel.cs: > line 49 > ClaimCharter.View.Pdf.PdfPagePanel.SetPage(PDPage pdfPage) in > C:\Users\admin\Desktop\document-charter\client\ClaimCharter\View\Pdf\PDFPagePanel.cs: > line 37 > ClaimCharterTestProject.Pdf.PdfViewerTests.TextOnlyPdfToImage() in > C:\Users\admin\Desktop\document-charter\client\ClaimCharterTestProject\Pdf\PdfViewerTests.cs: > line 75 > > > FTR, when I tried the same test with the DLLs that ship with PDFBox 0.7.3 > (linked against GNU Classpath), I get an UnsupportedOperationException: > > Test method PdfViewerTests.AllTextPdfToImage threw exception: > java.lang.UnsupportedOperationException: type not implemented > yet.java.awt.image.BufferedImage..ctor(Int32 w, Int32 h, Int32 type) > org.pdfbox.pdmodel.PDPage.convertToImage() > ClaimCharter.View.Pdf.PdfPagePanel.PageToBytes() in > C:\Users\admin\Desktop\document-charter\client\ClaimCharter\View\Pdf\PDFPagePanel.cs: > line 49 > ClaimCharter.View.Pdf.PdfPagePanel.SetPage(PDPage pdfPage) in > C:\Users\admin\Desktop\document-charter\client\ClaimCharter\View\Pdf\PDFPagePanel.cs: > line 37 > ClaimCharterTestProject.Pdf.PdfViewerTests.AllTextPdfToImage() in > C:\Users\admin\Desktop\document-charter\client\ClaimCharterTestProject\Pdf\PdfViewerTests.cs: > line 75 > > -- > Patrick Linskey > 202 669 5907 > >
