Hi Joshua, Thanks of the reply.
As it happens the sources are more likely to be well-defined than not. Regardless of that i'm happy to accept that its just not going to work. All i need to do is render the PDF document in inline HTML, the user then defines regions within that PDF page which are saved in the datastore for processing at a later stage when the document has been filled out, scanned back in and returned to the system. I assumed rendering the PDF as PNG images would be the easiest way to do this. I guess not. I'll have a rethink. Thanks Olly On Nov 21, 12:48 pm, Joshua Smith <joshuaesm...@charter.net> wrote: > I have a ton of experience with rendering PDFs, and unless your PDFs are > coming from a single, very well-defined, and well-behaved source, you are > going to find that nothing will reliably render them into images. The best > answer is Ghostscript, but even that cannot render 100% of the PDFs that > Adobe Reader can display. No Java or Python solution is going to come close > to working for you. > > I'd recommend that you look again at your architecture, and find a way to do > what you need that avoids having to render them server side. > > On Nov 21, 2010, at 6:19 AM, Olly wrote: > > > > > Thanks for the replies. > > > Output as images are important because i have a client side script > > that allows users to designate areas of the PDF page for processing at > > a later stage. The barcode is used to identify that page for > > processing when it is scanned in later on. > > > I've been looking at PDF to SVG - no luck. I'm currently stuck with > > using Java, but i have seen reportlab's library and am considering > > whether it would be worth moving. I still don't understand why some of > > the more useful AWT features are missing from AppEngine, coming from a > > position where i thought AppEngine was the way of the future, now i'm > > not so sure. > > > Olly > > > On Nov 21, 8:40 am, Wim den Ouden <wdenou...@gmail.com> wrote: > >> Found this, have no experiance with > >> ithttp://konryd.blogspot.com/2008/04/outputting-pdfs-with-google-app-en... > >> seems to be pure python > >> gr > >> wim > > >> On Sun, Nov 21, 2010 at 3:25 AM, Olly <oliver.mor...@kohark.com> wrote: > >>> Hi, > > >>> I need to do the following: > > >>> 1) User uploads PDF which is stored in blobstore > >>> 2) Individual pdf pages are rendered as images and shown in the > >>> browser window > >>> 3) A barcode identifier image is added to the PDF and is downloaded by > >>> the user > > >>> Sadly due to GAE's restrictions i have absolutely no idea how this can > >>> be done (without using remote services and data fetching). > > >>> Thanks > > >>> Olly > > >>> -- > >>> You received this message because you are subscribed to the Google Groups > >>> "Google App Engine" group. > >>> To post to this group, send email to google-appeng...@googlegroups.com. > >>> To unsubscribe from this group, send email to > >>> google-appengine+unsubscr...@googlegroups.com. > >>> For more options, visit this group > >>> athttp://groups.google.com/group/google-appengine?hl=en. > > >> -- > >> gr > >> wdo > > >> Demo free E-business:https://e-comm.appspot.com > >> Gae developer tipshttp://code.google.com/p/relat/wiki/gaetips > >> Wim den Ouden Google app engine based (web) apps > > > -- > > You received this message because you are subscribed to the Google Groups > > "Google App Engine" group. > > To post to this group, send email to google-appeng...@googlegroups.com. > > To unsubscribe from this group, send email to > > google-appengine+unsubscr...@googlegroups.com. > > For more options, visit this group > > athttp://groups.google.com/group/google-appengine?hl=en. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appeng...@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
