[Interest] QTextEdit performance

[Jason H]

It's not really a simple task. 

Everytime you add text, it has to be relayout. That takes a considerable amount of time. 

The simplifying observation you could make is that these lines are always appended at postion 0 of the line. Meaning a relayout is not necessary. A List view might be better.
Then the issue is you might want the list view to wrap, rather than show horizontal scrollbars. Or maybe not.




________________________________
 From: Jason Dictos <jdictos at barracuda.com>
To: "interest at qt-project.org" <interest at qt-project.org> 
Sent: Wednesday, April 25, 2012 12:00 PM
Subject: [Interest] QTextEdit performance
 

I’m trying to create a view into a rapidly changing log file. I am appending lines to QTextEdit, and want the scrolling on the screen to be responsive. So far I’ve been unable to achieve any reasonable level of performance with this simple task. 
 
Is there a better text style widget to use for scrolling log type scenarios?
Is there a trick I need to use to make this perform better?
 
-Jason

---------------------------------- 
'Like' us on Facebook for exclusive content and other resources on all Barracuda Networks solutions.
Visit http://barracudanetworks.com/facebook 
  ­­  
_______________________________________________
Interest mailing list
Interest at qt-project.org
http://lists.qt-project.org/mailman/listinfo/interest
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.qt-project.org/pipermail/interest/attachments/20120425/aaa30ab6/attachment.html>