PDF Renders Black / New Version of QuickPDF

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Hello all,

I'm trying QuickPDF as an inexpensive library to render PDFs to images. The PDFs would typically be simple, so I'm not too worried about advanced rendering features. I've tried it with a few PDFs and they look good, but PDFs from a important collection of PDFs only show a large black square.

The links to download the new versions of the library are down, so I would appreciate either someone emailing the newest version to init2null/at/gmail/dot/com or checking the PDF in the newest version by rendering it. I need to find out whether the new QuickPDF works with the file, so that I can make plans about which direction to go in. 

Thanks!

Wesley

Edited by init2null - 12 Feb 09 at 7:25PM

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init2null Members Profile Find Members Posts Beginner Joined: 12 Feb 09 Status: Offline Points: 7	Post Options Post Reply Quote init2null Report Post Thanks(0) Quote Reply Topic: PDF Renders Black / New Version of QuickPDF Posted: 12 Feb 09 at 7:03PM
	Hello all, I'm trying QuickPDF as an inexpensive library to render PDFs to images. The PDFs would typically be simple, so I'm not too worried about advanced rendering features. I've tried it with a few PDFs and they look good, but PDFs from a important collection of PDFs only show a large black square. The links to download the new versions of the library are down, so I would appreciate either someone emailing the newest version to init2null/at/gmail/dot/com or checking the PDF in the newest version by rendering it. I need to find out whether the new QuickPDF works with the file, so that I can make plans about which direction to go in. Thanks! Wesley Edited by init2null - 12 Feb 09 at 7:25PM

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: 13 Feb 09 at 1:49AM
	Hi Wesley! To be honest... The latest version shows a black square, too. We've done a lot in case of rendering up to the latest version. Your test.pdf will be a good sample for making our product better and better. Thanks! Cheers, Ingo

init2null Members Profile Find Members Posts Beginner Joined: 12 Feb 09 Status: Offline Points: 7	Post Options Post Reply Quote init2null Report Post Thanks(0) Quote Reply Posted: 13 Feb 09 at 2:55AM
	Thanks for the response Ingo. I'm definitely going to keep a close eye on QuickPDF and your version of it. It's close enough to fitting my needs that active development should fix this problem soon. This is the only bug preventing me from using it. I do have one suggestion though. If you could add the ability to render to shared 32-bit RGBA pixel data, that would provide quite a speed boost for C++ programmers. Thanks for your time! Wesley

DELBEKE Members Profile Find Members Posts Debenu Quick PDF Library Expert Joined: 31 Oct 05 Location: France Status: Offline Points: 151	Post Options Post Reply Quote DELBEKE Report Post Thanks(0) Quote Reply Posted: 13 Feb 09 at 3:28AM
	Hi Wesley and Ingo I have a look inside and corrected the problem. Now the dll render correctly your pdf.

DELBEKE Members Profile Find Members Posts Debenu Quick PDF Library Expert Joined: 31 Oct 05 Location: France Status: Offline Points: 151	Post Options Post Reply Quote DELBEKE Report Post Thanks(0) Quote Reply Posted: 13 Feb 09 at 4:07AM
	Hi Wesley What do you mean with "shared 32-bit RGBA pixel data" ?

init2null Members Profile Find Members Posts Beginner Joined: 12 Feb 09 Status: Offline Points: 7	Post Options Post Reply Quote init2null Report Post Thanks(0) Quote Reply Posted: 13 Feb 09 at 12:13PM
	I mean that one could supply a pointer to the data in my image instance for QuickPDF to write to. That would avoid the wasted work of creating the BMP, writing it to the string, and decoding the BMP. It would also cut down on the memory used during the process. You could take a look at how the Foxit DLL does it if you're interested. Anyway, thanks for fixing the bug so quickly! I'm planning on buying PDF Squad when it's released.

DELBEKE Members Profile Find Members Posts Debenu Quick PDF Library Expert Joined: 31 Oct 05 Location: France Status: Offline Points: 151	Post Options Post Reply Quote DELBEKE Report Post Thanks(0) Quote Reply Posted: 13 Feb 09 at 12:27PM
	We have something like this, i think. RenderPage have a device context pointer in its parameters.

init2null Members Profile Find Members Posts Beginner Joined: 12 Feb 09 Status: Offline Points: 7	Post Options Post Reply Quote init2null Report Post Thanks(0) Quote Reply Posted: 13 Feb 09 at 2:14PM
	Writing into shared data is ideal for my configuration, since my program uses the Qt library. In Foxit, I can give it the pointer to my QImage data, and it will write directly into the image. Thanks for the suggestion, though. I'll see if I can make it work.