[Bug swing/24651] JMenu layout problem with nested menus

[hendrich at informatik dot uni-hamburg dot de]

------- Comment #33 from hendrich at informatik dot uni-hamburg dot de  
2006-01-20 11:37 -------
Subject: Re:  JMenu layout problem with nested menus

> Sorry, I can't confirm that the menus are that slow. But you are right, this
> might be related to the underlying image beeing redrawn. Maybe I just don't
> have a big enough image to see such performance issues. Could you open a new
> bug for this performance issue and attach an image with which you see the slow
> behaviour? Please assign this new bug to me. I'll close this bug now.

OK. I agree that image rendering is the probable cause of the performance
problem...

I recently added 'thumbnails' support to my image viewer application,
and redrawing the ThumbnailsPanel is incredibly slow in Classpath 
- I measured a factor of 15000 slowdown when running under Classpath+Gtk
compared to JDK 1.5.0 :-(

I promised Mark to prepare a nice open-source licensed version of the
code, and I will submit new bug reports when this is done (soon).

- Norman


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24651