Rendering problem
Printed From: Debenu Quick PDF Library - PDF SDK Community Forum
Category: For Users of the Library
Forum Name: I need help - I can help
Forum Description: Problems and solutions while programming with the Debenu Quick PDF Library and Debenu PDF Viewer SDK
URL: http://www.quickpdf.org/forum/forum_posts.asp?TID=1074
Printed Date: 25 Jun 25 at 5:54PM
Software Version: Web Wiz Forums 11.01 - http://www.webwizforums.com
Topic: Rendering problem
Posted By: eborger
Subject: Rendering problem
Date Posted: 29 Apr 09 at 4:04PM
Hello,
I have this pdf http://www.borger.com.br/softsupply/demo.pdf and the rendering I get from Quick is much worse than adobe, I am using RenderPage toFile and I have tried different resolutions (100,200,300,600) and also file types (bmp,jpg,png). look at
http://www.borger.com.br/softsupply\page1.png
Is there something I could do to improve image quality ?
thanks and regards,
Edgar
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Replies:
Posted By: Ingo
Date Posted: 29 Apr 09 at 4:22PM
Hi Edgar!
Please keep in mind that QP comes along with a small dll and if we're speaking from the adobe reader we're speaking from a 100-mb-installation ;-)
With his big installation adobe can make a sh... made pdf looking very nice - QP can't do this. Do you have this case if you're using a new pdf engine for pdf-creation, too? ... I've seen that the pdf was made with the old Haru-Lib...
Cheers, Ingo
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Posted By: eborger
Date Posted: 29 Apr 09 at 9:41PM
Hi Ingo,
thanks, but yes I have bad results with pdf produced by other products like WPCubed as well, the looks is very simillar to what I get from sumatra, so I supose you must be using popler as well.....
I can send you some samples if you want.
I have a very simple one produced with itext with text only, no images, and that looks ok.
regards,
Edgar
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Posted By: DELBEKE
Date Posted: 30 Apr 09 at 12:28AM
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Perhaps you should consider rendering directly on a device context using RenderPageToDc function.
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Posted By: rolftest99
Date Posted: 30 Apr 09 at 5:42AM
Can someone give a little Example in Delphi using RenderPageToDc function?
Thanks
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Posted By: Ingo
Date Posted: 30 Apr 09 at 5:47AM
Hi Edgar!
I think i've found something for you ...
Cheers, Ingo
function "SetPrecision"
Description
Use this function to set the precision of numerical values stored in the PDF document. Setting the
precision to a lower number will reduce the size of the generated file, while a higher precision will
result in a larger file, although objects and graphics will be more accurately positioned. The default
precision is 4
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Posted By: eborger
Date Posted: 30 Apr 09 at 10:00AM
Hi Ingo,
sorry, but no.
I tried with 8 and got the same result, the problem is not in graphics, but in plain text, in my example (there are other cases) I have a simple text in font Courier New Bold, size 20 and the letters are one on top of the other, have a look at the png and you will see.
thanks anyhow,
Edgar
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