i've written a few times in my blog about qt4's treeviews. i promise i'm not obsessed with them, but here i go again. ;) marius, the troll (as in trolltech) who looks after that particular bit of code (though i hear ben meyer is helping out there as well these days?), wrote me to let me know that inserting items one by one into a view triggers worst-case scenarios in painting/updating/etc.
indeed ... the way one should do bulk inserts is by putting them into a list and using insertTopLevelItems() or insertChildren(). then things go a lot faster, even in 4.1.0 =)
marius also mentioned that they are working on some serious optimizations in the header views for qt 4.2. given another release or two with these sorts of optimizations and qt4 is going to be seriously fast compared to what we have now. and it's not too shabby already ... so buckle up =)
however, other than a kicker bug i'm going to squash today (knock on wood) it's not going to be a big coding day for me.
i did upload a couple of the presentations i did at tposscon last week after someone asked for the slides. now you can click through them as you listen to the audio. yes, they are in kpresenter format. i haven't gotten around to doing an html export. pradeepto, of kde india fame, converted all the OSDW presentations into html. i need to get around to uploading those.
i'm busy today getting my presentations in order for linux conf australia (aka lca) 2005 which, tricksylike, is not held in australia this year at all but new zealand. i'll be speaking for the first 3 days with breaks for coffee and lunch; the first two days will be an OSDW affair (no, it's not on the website *sigh*), the third day is a set of presentations on using kiosk to deploy KDE. the fourth day i only have one small presentation to do on KDE4 and then i get to see what other people are up to. i was hoping not to do all this alone, but the various people who had bravely volunteered ended up having to take care of other commitments. some managed to support me in other ways, including bard hards who pitched in for some of my flight costs along with lca and the aukland linux users group. thanks to all involved there.
there'll be another OSDW event in north america in may in philadelphia. the boys and girls at sourceextreme will be helping out there.
i'll also be at the southern california linux expo where i'll be presenting the same kde4 presentation i'm doing next week at lca. there'll be a kde booth there as well and i have one helper lined up already, but we have room for 2 more. so if you are a kde fan and would like to hang out and chat with the event visitors, please email me (aseigo at kde dot org) and i'll hook you up with a free pass.
the day before the cali event i'll be stopping in mexico to keynote at the Sistemas Computacionales y Tecnologías de Información at moneterey university.
and then i stay away from people until mid-april.
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8 comments:
Good speech! You might want to change the link from your blog to the audio -- it's missing the ".php" :)
Hey, it's cool to see you coming to New Zealand - I'm a Kiwi and enjoy reading of your work on KDE. It would be awesome to catch up, but it sounds like you're going to be outta my area.
Cheers.
Another Kiwi here. I'm going to LCA this year, and I look forward to attending your presentations. Sounds like you really have your work cut out for you over the next little while, so I hope you're able to take a bit of time to relax while you're over here :)
LCA to be held in NZ, 2005? What next, it'll be a non-Linux BBQ event?
Cheers on the TPOSSCON speeches, really interesting listening =)
Mr Seigo, I am sorry to bother you but I cannot believe you make a presentation with just one slide :P (the 266_10_ways.kpr is almost empty, there is only one slide)
i have one helper lined up already, but we have room for 2 more
What are the qualifications for the "little munchkins"? I live in LA and wouldn't mind helping.
Also, you need the helpers for both days?
@paurullan: oops! i uploaded the wrong version of the file. i've uploaded the full presentation file. thanks for noticing! =)
@daniel "suslik" d: the qualifications are as follows:
enthusiasm for and familiarity with KDE. you don't need to be a developer or a guru, just someone who really enjoys KDE and would have fun hanging out talking with other people about it for a day or two at the show.
and yes, we need people for both days, though if you can only make it for one that's totally cool too!
please email me if you'd like to join us so i can get you registered for free.
Darn! If I'd realised that lca was in NZ this year, I would have arranged a week off. Too late now I'm afraid. Have fun down in Scarfie land and have a Speights for me. I hope you get to see some of the country while you're here.
Cheers!
John.
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