I usually take the same approach as Alvaro. I pre-process things to the get the total number of iterations and then I start the actual process with a progress bar for the whole thing.
Another way is to leave the progress as merely an indication that something is happening, going from 0 to 100 for each new iteration. This might be "better" for processes that you don't know the actual "length" and take way too long to process like doing a os.walk() on a huge folder structure. For that I do a try os.walk().next() and set the progress bar from 0 to 100 for each new iteration that is successful until it ends and I set the progress bar to complete. But would be great if there was an alternative to these. cheers, diogo On Tue, Sep 18, 2012 at 4:54 PM, Howard Jones <mrhowardjo...@yahoo.com>wrote: > Yes but that means walking twice which was something I was hoping to avoid > > > Howard > > ------------------------------ > *From:* Alvaro Castaneda <varo...@gmail.com> > *To:* Howard Jones <mrhowardjo...@yahoo.com>; Nuke Python discussion < > nuke-python@support.thefoundry.co.uk> > *Sent:* Tuesday, 18 September 2012, 20:36 > > *Subject:* Re: [Nuke-python] progress bar > > > you can count the folders before hand using something like os.walk() > > http://www.saltycrane.com/blog/2007/03/python-oswalk-example/ > > > cheers!! > .:varomix:. > MIX Studio > 3D Artist/Generalist TD > varo...@varomix.net <varo...@gmail.com> > Contact Me [image: Linkedin] <http://mx.linkedin.com/in/varomix>[image: > Facebook] <http://www.facebook.com/varomix>[image: > Twitter]<http://www.twitter.com/varomix> > > > > > On Tue, Sep 18, 2012 at 1:14 PM, Howard Jones <mrhowardjo...@yahoo.com>wrote: > > Hooray - a clear explanation! > > Out of interest what do you do if you don't know how many iterations are > needed so in > > progIncr = 100.0 / len(reads) > > you cant know the value of len(reads)? > > Say you are walking a path and dont know how many subfolders there are but > want to show progress on the walk? > > Cheers > Howard > > ------------------------------ > *From:* Luca Fiorentini <luca.fiorent...@gmail.com> > *To:* Nuke Python discussion <nuke-python@support.thefoundry.co.uk> > *Sent:* Tuesday, 18 September 2012, 18:56 > *Subject:* Re: [Nuke-python] progress bar > > Thanks Nathan! > > Now it is way clearer and works like a charm! > > Kudos :) > > On Tue, Sep 18, 2012 at 7:34 PM, Nathan Rusch <nathan_ru...@hotmail.com>wrote: > > You’re basically on the right track. You need to run your slow function > on a separate thread to avoid blocking Nuke’s GUI until it finishes, and > you would create and update your progress bar from within that function as > well so it will update properly in time with your processing. > > > import threading > import time > > def dummy(): > task = nuke.ProgressTask('Examining Read Nodes...') > reads = nuke.allNodes('Read') > progIncr = 100.0 / len(reads) > for i, r in enumerate(reads): > if task.isCancelled(): > nuke.executeInMainThread(nuke.message, args=('Aborted',)) > return > task.setProgress(int(i * progIncr)) > task.setMessage(r.fullName()) > # Placeholder for some long per-node process > time.sleep(2) > > def aMenuCommand(): > # This is the function you would actually bind to a Nuke menu command > threading.Thread(target=dummy).start() > > > -Nathan > > > *From:* Luca Fiorentini <luca.fiorent...@gmail.com> > *Sent:* Tuesday, September 18, 2012 10:19 AM > *To:* nuke-python@support.thefoundry.co.uk > *Subject:* [Nuke-python] progress bar > > Hi! > > I am trying to make a progress bar but with no success. > I took a look at the code in the guide > > > http://docs.thefoundry.co.uk/nuke/63/pythondevguide/basics.html#creating-progress-bar-dialogs > > But I am clearly missing something. > Could someone kindly explain it to me in an easier way? > Imagine I have a function like this: > > def dummy(): > for n in nuke.allNodes('Read'): > print 'here my super slow function' > > where and how should I implement the progress bar? > should I use the code from the example and then call the whole funciont in > a new thread? like > > threading.Thread( None, dummy ).start() > > Thanks for your time > > -- > *Luca Fiorentini - 3D Lighting Artist* > My Showreel <http://www.vimeo.com/lucafiorentini/reel> - My > blog<http://lucafiorentini.wordpress.com/>- My > Flickr <http://www.flickr.com/photos/lucafiorentini> > > ------------------------------ > _______________________________________________ > Nuke-python mailing list > Nuke-python@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python > > _______________________________________________ > Nuke-python mailing list > Nuke-python@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python > > > > > -- > *Luca Fiorentini - 3D Lighting Artist* > My Showreel <http://www.vimeo.com/lucafiorentini/reel> - My > blog<http://lucafiorentini.wordpress.com/>- My > Flickr <http://www.flickr.com/photos/lucafiorentini> > > > _______________________________________________ > Nuke-python mailing list > Nuke-python@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python > > > > _______________________________________________ > Nuke-python mailing list > Nuke-python@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python > > > > > > _______________________________________________ > Nuke-python mailing list > Nuke-python@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python > >
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