DPLRenderPageToFile misses some gfx

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   I have trouble rendering a PDF with QuickPDF Library. My PDF contains some sort of "watermark", which is displayed ok with Adobe or Foxit Reader, but when rendered with Quick PDF, only currupted parts of this watermark are visible in the output.

Original PDF: https://od.lk/f/ODJfMzQ1ODQ2ODlf

This is how it should look like:

And this is how Quick PDF Library (v16.12) renders this PDF:

The watermark in the page's center is almost invisible. What can I do to get Quick PDF render this file correctly?

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
prenz Members Profile Find Members Posts Beginner Joined: 28 Feb 19 Status: Offline Points: 3	Post Options Post Reply Quote prenz Report Post Thanks(0) Quote Reply Topic: DPLRenderPageToFile misses some gfx Posted: 28 Feb 19 at 11:31AM
	I have trouble rendering a PDF with QuickPDF Library. My PDF contains some sort of "watermark", which is displayed ok with Adobe or Foxit Reader, but when rendered with Quick PDF, only currupted parts of this watermark are visible in the output. Original PDF: https://od.lk/f/ODJfMzQ1ODQ2ODlf This is how it should look like: And this is how Quick PDF Library (v16.12) renders this PDF: The watermark in the page's center is almost invisible. What can I do to get Quick PDF render this file correctly?

Ingo Members Profile Find Members Posts Moderator Group Joined: 29 Oct 05 Status: Offline Points: 3524	Post Options Post Reply Quote Ingo Report Post Thanks(0) Quote Reply Posted: 28 Feb 19 at 11:46AM
	Hi Jan, first you should try to use... CombineContentStreams and NormalizePage ...after the load and before rendering this could be an effect already. Cheers and welcome here, Ingo
	Cheers, Ingo

prenz Members Profile Find Members Posts Beginner Joined: 28 Feb 19 Status: Offline Points: 3	Post Options Post Reply Quote prenz Report Post Thanks(0) Quote Reply Posted: 28 Feb 19 at 12:07PM
	Hi Ingo, thanks for the welcome, and of course, for the tips. I just tried CombineContentStream and NormalizePage, but unfortunately no change to the output...

Ingo Members Profile Find Members Posts Moderator Group Joined: 29 Oct 05 Status: Offline Points: 3524	Post Options Post Reply Quote Ingo Report Post Thanks(0) Quote Reply Posted: 28 Feb 19 at 1:31PM
	In my apps it looks similar to your sample here. I think the problem is more how this watermark is made. This here is a user-user-forum - so further help you should get on the official support page of Debenu/Foxit. Please add a sample and complete description of your issue (try "report a bug" or "technical question"): https://www.debenu.com/support/contact/
	Cheers, Ingo

Coogara Members Profile Find Members Posts Beginner Joined: 06 Jan 19 Location: Australia Status: Offline Points: 6	Post Options Post Reply Quote Coogara Report Post Thanks(0) Quote Reply Posted: 05 Aug 19 at 11:46PM
	Did you find a solution for this? I'm having the same issue. I have a process running on Linux. It renders page text just fine, but none of the graphical content renders. Mine aren't even watermarks. I can't be certain, but I suspect the issue concerns the PDF layers. When I ran the PDF through a compressor, the individual pages could then be extracted intact, with graphics. UPDATE: I've given up on this under Linux and instead am calling ghostscript to extract PNG pages from the PDF. This is faster than my previous efforts using QuickPDF. Graeme Edited by Coogara - 06 Aug 19 at 11:28PM