PDFsharp - moved to http://forum.pdfsharp.net/ Forum Index PDFsharp - moved to http://forum.pdfsharp.net/
Please visit the new PDFsharp forum at http://forum.pdfsharp.net/
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

CMYK Images

 
This forum is locked: you cannot post, reply to, or edit topics.   This topic is locked: you cannot edit posts or make replies.    PDFsharp - moved to http://forum.pdfsharp.net/ Forum Index -> Support - moved to http://forum.pdfsharp.net/
View previous topic :: View next topic  
Author Message
fretts



Joined: 03 Nov 2006
Posts: 1

PostPosted: Fri Nov 03, 2006 7:50 pm    Post subject: CMYK Images Reply with quote

Hi there,

It seems that when you add a JPEG which uses a CMYK colorspace, the image is not rendered correctly.

Is there a way around this?

Thanks
Paul
Back to top
View user's profile Send private message
Stefan Lange



Joined: 12 Oct 2006
Posts: 47
Location: Cologne, Germany

PostPosted: Fri Nov 03, 2006 10:24 pm    Post subject: Reply with quote

The problem is that GDI+ does not report that the image is CMYK. You must modify the function PdfImage.InitializeJpeg:
Code:
Elements[Keys.ColorSpace] = new PdfName("/DeviceCMYK");

Depending on the image you may also change the decoding:
Code:
Elements["/Decode"] = new PdfLiteral("[1 0 1 0 1 0 1 0]");


The problem is that this information cannot be retrieved with GDI+ (or at least I donít know how).

I suggest you to make a hack: Introduce flags in the XImage class that you can use to decide when you must change the colorspace and decode params.

Regards
Stefan Lange
Back to top
View user's profile Send private message Send e-mail
Display posts from previous:   
This forum is locked: you cannot post, reply to, or edit topics.   This topic is locked: you cannot edit posts or make replies.    PDFsharp - moved to http://forum.pdfsharp.net/ Forum Index -> Support - moved to http://forum.pdfsharp.net/ All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © phpBB Group. Hosted by phpBB.BizHat.com


Start Your Own YouTube Clone

Free Web Hosting | Free Forum Hosting | FlashWebHost.com | Image Hosting | Photo Gallery | FreeMarriage.com

Powered by PhpBBweb.com, setup your forum now!
For Support, visit Forums.BizHat.com