Debenu Quick PDF Library - PDF SDK Community Forum : page rendering is quite slow. http://www.quickpdf.org/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 04 Apr 2026 19:13:18 +0000 Wed, 22 Sep 2010 14:27:13 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.01 360 www.quickpdf.org/forum/RSS_post_feed.asp?TID=1569 <![CDATA[Debenu Quick PDF Library - PDF SDK Community Forum]]> http://www.quickpdf.org/forum/forum_images/QPDF_Forum_Title.png http://www.quickpdf.org/forum/ <![CDATA[page rendering is quite slow. : Hi!And 900 dpi perhaps 15 sec...But...]]> http://www.quickpdf.org/forum/page-rendering-is-quite-slow_topic1569_post6995.html#6995 Author: Ingo
Subject: 1569
Posted: 22 Sep 10 at 2:27PM

Hi!

And 900 dpi perhaps 15 sec...
But 72 dpi (the standard) immediately.
It depends on what you wanna do ... like always ;-)
The dev-team has already done a lot in case of speed
but if you want a lot then ... ;-)

Cheers, Ingo
]]> Wed, 22 Sep 2010 14:27:13 +0000 http://www.quickpdf.org/forum/page-rendering-is-quite-slow_topic1569_post6995.html#6995 <![CDATA[page rendering is quite slow. : I have the same Problem with one...]]> http://www.quickpdf.org/forum/page-rendering-is-quite-slow_topic1569_post6989.html#6989 Author: pavsej
Subject: 1569
Posted: 22 Sep 10 at 8:59AM

I have the same Problem with one large image on a PDF page.

I kind of solved it by changing PrinterResolution. For preveiw I use lower Resolution, for real printing job I use higher Resolution.
In my case rendering of one PDF page with one image takes (RenderPageToDC):
2.3 sec - 300 DPI
6.5 sec - 600 DPI
 
Anyway, any performace improvement would be welcome.
 
]]> Wed, 22 Sep 2010 08:59:09 +0000 http://www.quickpdf.org/forum/page-rendering-is-quite-slow_topic1569_post6989.html#6989 <![CDATA[page rendering is quite slow. : Hi, Ingo, It ismuch obviouswhen...]]> http://www.quickpdf.org/forum/page-rendering-is-quite-slow_topic1569_post6964.html#6964 Author: giantjupiter
Subject: 1569
Posted: 13 Sep 10 at 11:44PM

Hi, Ingo,
 
It is much obvious when there is an large image in the page, and it seems only RenderPageToDC() is slow and other functions are ok. The pause of rendering text is short but still noticable.
 
Should I render it to a bitmap first, then every time repaint the bitmap. I am also trying mupdf, but it don't have this problem.
 
By the way, I am trying them with wxWidgets, and I put RenderPageToDC() and mupdf's winblit() in the inherited function of wxWindow::OnDraw(), which is invoked to repaint the DC.
 
Thx,
Michael
 


Edited by giantjupiter - 13 Sep 10 at 11:52PM]]> Mon, 13 Sep 2010 23:44:45 +0000 http://www.quickpdf.org/forum/page-rendering-is-quite-slow_topic1569_post6964.html#6964 <![CDATA[page rendering is quite slow. : Hi Michael!Is it slow with all...]]> http://www.quickpdf.org/forum/page-rendering-is-quite-slow_topic1569_post6963.html#6963 Author: Ingo
Subject: 1569
Posted: 13 Sep 10 at 7:37PM

Hi Michael!

Is it slow with all pdf-documents or only few (very special)?
What about ...
LoadFromFile...
SelectPage...
RenderPageToDC...
Is it faster?

Cheers and welcome here,
Ingo



Edited by Ingo - 13 Sep 10 at 7:37PM]]> Mon, 13 Sep 2010 19:37:00 +0000 http://www.quickpdf.org/forum/page-rendering-is-quite-slow_topic1569_post6963.html#6963 <![CDATA[page rendering is quite slow. : Hi, I am trying version 7.21,...]]> http://www.quickpdf.org/forum/page-rendering-is-quite-slow_topic1569_post6962.html#6962 Author: giantjupiter
Subject: 1569
Posted: 13 Sep 10 at 4:47PM

Hi,
 
I am trying version 7.21, and I noticed that DARenderPageToDC(...) is quite slow. I call DARenderPageToDC(...) in OnDraw event, so that repainting has a delay, which is quite annoying.
 
I called these functions:
 
DAOpenFile(...),
DAFindPage(...)
DARenderPageToDC(...)
 
and no other function is called. The Quick Pdf Library Demo seems to be fast.
 
So I'd like to ask what is the best way to render a page?
 
Thx
michael
]]> Mon, 13 Sep 2010 16:47:56 +0000 http://www.quickpdf.org/forum/page-rendering-is-quite-slow_topic1569_post6962.html#6962