tif images appearing distorted in PDFs
Hello all, I'm trying to get tif images working in PDF's I'm creating - The problem is some of them are coming out with the image height having been resized (by around 50%). Other tif images are being displayed correctly with no incorrect resizing. Does anyone have any idea's why this might be? Graeme Woodhouse Software Engineer ProQuest - The Quorum, Barnwell Road, Cambridge, CB5 8SW Direct-Line:+44 (0) 1223 271 264 Switchboard: +44 (0) 1223 215 512 Fax: +44 (0) 1223 215 513 www.proquest.co.ukhttp://www.proquest.co.uk/ This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this message in error, please notify the sender immediately by reply and immediately delete this message and any attachments.
RE: tif images appearing distorted in PDFs
How would I find out if the tif that is going wrong has non-squared pixels? Graeme -Original Message- From: paul womack [mailto:[EMAIL PROTECTED] Sent: 21 May 2008 14:10 To: fop-users@xmlgraphics.apache.org Subject: Re: tif images appearing distorted in PDFs Woodhouse, Graeme wrote: Hello all, I'm trying to get tif images working in PDF's I'm creating - The problem is some of them are coming out with the image height having been resized (by around 50%). Other tif images are being displayed correctly with no incorrect resizing. Does anyone have any idea's why this might be? Possibly a tiff file with non-square pixels (which is valid, but unusual) ? BugBear - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: tif images appearing distorted in PDFs
I seem to have fixed it by setting scaling to non-uniform. ... not sure why it fixed it but it seems to have done. Graeme -Original Message- From: Woodhouse, Graeme Sent: 21 May 2008 14:12 To: 'fop-users@xmlgraphics.apache.org' Subject: RE: tif images appearing distorted in PDFs How would I find out if the tif that is going wrong has non-squared pixels? Graeme -Original Message- From: paul womack [mailto:[EMAIL PROTECTED] Sent: 21 May 2008 14:10 To: fop-users@xmlgraphics.apache.org Subject: Re: tif images appearing distorted in PDFs Woodhouse, Graeme wrote: Hello all, I'm trying to get tif images working in PDF's I'm creating - The problem is some of them are coming out with the image height having been resized (by around 50%). Other tif images are being displayed correctly with no incorrect resizing. Does anyone have any idea's why this might be? Possibly a tiff file with non-square pixels (which is valid, but unusual) ? BugBear - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Large PDF's files fail to stream correctly
Hi Roland, I could do but then the user would require a mechanism to connect to sql and then parse the blob back into a pdf. Which would require a web service so transmission would again become the problem. Thanks anyway though! Graeme Woodhouse Software Engineer ProQuest Direct-Line: +44 (0) 1223 271 264 Fax: +44 (0) 1223 215 513 -Original Message- From: Roland Neilands [mailto:[EMAIL PROTECTED] Sent: 08 April 2008 01:29 To: fop-users@xmlgraphics.apache.org Subject: Re: Large PDF's files fail to stream correctly Just a thought but you could put it into a BLOB in a DB apply your security to accessing that. Alternatively encrypt the filesystem pdf for reading provide the password separately. Regards, Roland Woodhouse, Graeme wrote: Hi Daniel, Thanks for your help - as a bit of a test I tried the following two scenarios: I set the response size to Integer.MAX_VALUE. Which didn't work :( I also tried first saving the output to a file - waiting until the file was complete, then streaming the file to the browser through the response. Which didn't work :(. Your right that I could temporarily link to the file I created and then delete the file after but your right about the security access. Its not something that we could do as the pdf's contain sensitive information + direct access to the server isn't really an option as it bypasses the rest of the security we have in place. I don't suppose you or anyone else on the list know of any other way to get round this? Graeme Woodhouse Software Engineer ProQuest Direct-Line: +44 (0) 1223 271 264 Fax: +44 (0) 1223 215 513 -Original Message- From: Daniel Appelt [mailto:[EMAIL PROTECTED] Sent: 04 April 2008 18:43 To: fop-users@xmlgraphics.apache.org Subject: Re: Large PDF's files fail to stream correctly Hi Graeme, in general, you do not know in advance how long the rendering with FOP will take. For large files it is not unlikely that the browser times out or finishes fetching the PDF file in an unfinished state. A possible pseudo-streaming solution could be to let FOP save the file on the server, and use a website with an AJAX script on the client side that regularly checks the state of the file. If file size isn't changing between two or more consecutive checks, it might be assumed that FOP has finished rendering the file and you could redirect the browser to the respective URL or show it as a link. Of course, this might still be problematic with regards to security... Cheers, Daniel - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] This e-mail is solely for the use of the intended recipient and may contain information which is confidential or privileged. Any unauthorised use of its contents is prohibited. If you have received this e-mail in error, please notify the sender via return e-mail and then delete the original e-mail. This e-mail is solely for the use of the intended recipient and may contain information which is confidential or privileged. Any unauthorised use of its contents is prohibited. If you have received this e-mail in error, please notify the sender via return e-mail and then delete the original e-mail. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Large PDF's files fail to stream correctly
Have you tried connecting to Tomcat directly and not via Apache to confirm that the problem is related to the streaming via AJP? I've tried it now on a stand alone tomcat instance and am having the same trouble. It makes me even more confused that this isn't a more publicised problem on the internet. I would have thought many people dynamically generate large PDF's through tomcat (although writing that it does sound less likely with all those stipulations). So, it seems like its tomcat's problem more than the connection between apache and tomcat. Graeme Woodhouse Software Engineer ProQuest Direct-Line: +44 (0) 1223 271 264 Fax: +44 (0) 1223 215 513 -Original Message- From: Manuel Mall [mailto:[EMAIL PROTECTED] Sent: 08 April 2008 08:41 To: 'fop-users@xmlgraphics.apache.org' Subject: RE: Large PDF's files fail to stream correctly -Original Message- From: Woodhouse, Graeme [mailto:[EMAIL PROTECTED] Sent: Monday, 7 April 2008 10:41 PM To: 'fop-users@xmlgraphics.apache.org' Subject: RE: Large PDF's files fail to stream correctly Hi Jeremias, Your right - having no problems with smaller PDF's. I think it all has to do with the setup I have with tomcat connecting to apache and the way data chunks are sent. This is a long standing problem in my company - I'm amazed it isn't a well known problem. Have you tried connecting to Tomcat directly and not via Apache to confirm that the problem is related to the streaming via AJP? Have you tried writing the PDF to a file on the server but serve it via the Apache/Tomcat combination? Does that still fail? For further isolation testing you could use a tool like wget to save the stream at the client to a file. Then compare that to a copy of the PDF saved on the server and see if there is a pattern to when / where the corruption occurs. Manuel - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Large PDF's files fail to stream correctly
Oh sorry, forgot to add that info to the last email implicitly. I have tested adding a step of first streaming the file to disk and then serving the file as a stream and that encounters the same problem. Giving a direct link to the file on the server works fine but as I mentioned we don't want to do that. Its quite difficult to make anything out of the file that is downloaded as its in a binary format. I can tell that there isn't a set limit for size, file seems to randomly fail between 25-30page+ mark. (Each of these pages contains variable size images of around 1700x2000). Graeme Woodhouse Software Engineer ProQuest Direct-Line: +44 (0) 1223 271 264 Fax: +44 (0) 1223 215 513 -Original Message- From: Manuel Mall [mailto:[EMAIL PROTECTED] Sent: 08 April 2008 13:20 To: 'fop-users@xmlgraphics.apache.org' Subject: RE: Large PDF's files fail to stream correctly -Original Message- From: Woodhouse, Graeme [mailto:[EMAIL PROTECTED] Sent: Tuesday, 8 April 2008 8:03 PM To: 'fop-users@xmlgraphics.apache.org' Subject: RE: Large PDF's files fail to stream correctly Have you tried connecting to Tomcat directly and not via Apache to confirm that the problem is related to the streaming via AJP? I've tried it now on a stand alone tomcat instance and am having the same trouble. It makes me even more confused that this isn't a more publicised problem on the internet. I would have thought many people dynamically generate large PDF's through tomcat (although writing that it does sound less likely with all those stipulations). So, it seems like its tomcat's problem more than the connection between apache and tomcat. I would still do the other suggested tests. Save the PDF as file and serve that through tomcat and also capture the data at the client end and compare. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Large PDF's files fail to stream correctly
Hi Daniel, Thanks for your help - as a bit of a test I tried the following two scenarios: I set the response size to Integer.MAX_VALUE. Which didn't work :( I also tried first saving the output to a file - waiting until the file was complete, then streaming the file to the browser through the response. Which didn't work :(. Your right that I could temporarily link to the file I created and then delete the file after but your right about the security access. Its not something that we could do as the pdf's contain sensitive information + direct access to the server isn't really an option as it bypasses the rest of the security we have in place. I don't suppose you or anyone else on the list know of any other way to get round this? Graeme Woodhouse Software Engineer ProQuest Direct-Line: +44 (0) 1223 271 264 Fax: +44 (0) 1223 215 513 -Original Message- From: Daniel Appelt [mailto:[EMAIL PROTECTED] Sent: 04 April 2008 18:43 To: fop-users@xmlgraphics.apache.org Subject: Re: Large PDF's files fail to stream correctly Hi Graeme, in general, you do not know in advance how long the rendering with FOP will take. For large files it is not unlikely that the browser times out or finishes fetching the PDF file in an unfinished state. A possible pseudo-streaming solution could be to let FOP save the file on the server, and use a website with an AJAX script on the client side that regularly checks the state of the file. If file size isn't changing between two or more consecutive checks, it might be assumed that FOP has finished rendering the file and you could redirect the browser to the respective URL or show it as a link. Of course, this might still be problematic with regards to security... Cheers, Daniel - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Large PDF's files fail to stream correctly
Hello, Hopefully someone on this list can help, We've been having long standing problems here building dynamic PDF's and streaming the to the Adobe PDF reader plugin. We use an Apache/Tomcat (through AJP) to stream these files. Unfortunatly as the files reach 40-50 pages they become to become randomly garbled and the reader reports them as corrupt. Has anyone here had the same problem? One possible fix we have found is to save the file to the server and link directly to the file, then delete the file. But this leaves security vulnerabilities in the system and we would prefer to get the streaming right. It would be great if someone could shed some light on this problem! Thanks in advance :) Graeme Woodhouse Software Engineer ProQuest - The Quorum, Barnwell Road, Cambridge, CB5 8SW Direct-Line:+44 (0) 1223 271 264 Switchboard: +44 (0) 1223 215 512 Fax: +44 (0) 1223 215 513 www.proquest.co.ukhttp://www.proquest.co.uk/ This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this message in error, please notify the sender immediately by reply and immediately delete this message and any attachments.
