Some of the slides from last Maemo Summit in Amsterdam have been made online. Here is the one from the Cross Platform with Qt talk that I held. It does not give much, though, since mostly what counts is the real live demo. Let us hope that at some point in time, the recorded videos will be online as well. Of course, there are also other interesting slides such as Harmattan highlights and its architecture, Web Runtime, Quake3, and many others.

While I am there, if you check the slides from my talk above, page 9 shows the secret behind kinetic scrolling code, which I featured before as Flick Charm or Flickable interface. Or, in another version as follows (click to enlarge):

Of course, it is the simplified version and ignore some details, but that should be a good start to really digest the code. Since it was hacked in the old 4.4/4.5 time, I did not have the luxury of using the new state machine framework in Qt 4.6. As an exercise for you, the brave readers, convert the code to use the framework. In addition, it does not support yet bouncing-on-edge feature, something which can serve as another exercise, too.

Have fun with scrolling :)

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Like mentioned before, with other few Trolls, we are now in Amsterdam for the Maemo Summit 2009. If you are there, don't forget to look for us and/or drop us a visit!

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Another exciting event coming up soon: Maemo Summit 2009! This time it will be in Amsterdam. My flight ticket is secured already, I look forward to it. And of course, since this will be also my first visit to Amsterdam.

My talk will be on Friday afternoon, see the schedule for details. Although the title "Cross-platform with Qt" is a bit boring, rest assured you will see showcases of many things (which I can pack in 25 minutes) Qt is capable of doing.

A few other Trolls will be there as well so go there and find us. In all cases, if you are around and want to have a chat, drop me an email (ariya.hidayat AT gmail DOT com).

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Flying to the UK tonight for three weeks.

Will be staying on the outskirts of London.

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This did happen in my last flight. I consider making it a quick math quiz for any candidate I have to interview in the future (to see whether it takes him 5 minutes or 5 hours to analyze).

A few minutes after the captain announced that we were flying at forty thousand feet above the sea level, cruising at the speed of 900 km/h, through the window we saw another airplane flying at roughly the opposite direction, but at a slightly lower altitude. Of course, the obvious question was asked: How far is the other plane from us? This is better than the typical Fermi problem. Assuming that that airplane was visible in our 90 degrees field of view for 4 seconds and it flew just as fast as our plane, I did a quick calculation and came up with an answer, the flight trajectory of that plane was 1 km apart from ours.

The other guy was impressed, but he was not convinced. Now, since my math skills are rusty, I am sure I missed a thing or two. Now, what is your take?

(Picture rendered from Jarno's public-domain vectorized aircraft).

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Coming back to Oslo (from LinuxTag in Berlin), apparently the heat wave which hits Europe was its peak, at least here in Oslo. To add insult to the injury, it does not really help if the ventilation system acts strangely, which it usually does right when you need it. We sort of enjoy the rare moment when Oslo is warmer than most other places.

In any case, Berlin was fantastic. There were already few blog posts (e.g. from Lydia, Chani, Sebas, Frederik) about LinuxTag so I won't write too much about it. I was very content with my talk since the room was quite filled when I was doing my presentation. The Qt booth was fun as well, I managed to have short chats here and there with the fellow Berlin trolls, KDAB guys, KDE people, and some other new contacts.

As it was nicely planned long time ago (except a little glitch with some kind of a desktop suite program :-), we did manage a cuisine-exchange program (and it was not about pizza). Hmm, I still need to find those pictures...

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Like I wrote before, an exciting event is coming up soon: LinuxTag. I am still polishing the slides for my Advanced Graphics Programming with Qt. In few hours I will be flying to Berlin.

If you are around, drop Qt Software stand #108 in hall 7.2b a visit!

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Things are always exciting.

Within two weeks, I will be in Berlin for LinuxTag, "Where .COM meets .ORG", one of the important FOSS shows in Europe. We (as in Qt Software) will have a stand, just check stand #108 in hall 7.2b. Drop us a visit!

And if you stay until Saturday, feel free to show up at my short talk (as in 30 minutes) Advanced Graphics Programming with Qt. Nothing fancy there, but if you want to kick-start doing cool stuff with Qt, try not to miss it. Of course, there is a whole stack of attractive presentations at the KDE track (and other tracks, too) on Saturday.

I can't wait to see Berlin again. And of course, since our very own Mr. Portale lives in Berlin, we would not miss the chance to exchange our cuisine experiences, just like the last time. This time however, I will make sure it's not only about pizza!

In all cases, if you are around and want to have a chat, drop me an email (ariya.hidayat AT gmail DOT com).

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Like I wrote before, last week I was in Florence for the third installment of Pycon Italia.

I must admit, it was absolutely a fantastic event, so kudos to the the organizer! Everything went without glitches, the auditorium was spacious, coffee breaks and lunch were without compromise. And thanks to our lovely translators, we have on-the-fly, quasi real-time translations both English-to-Italian and Italian-to-English. I guess this is something any others non-English conferences need to copy, it was definitely awesome to be able to follow few talks presented in Italian. Of course, I need to say that it gives a different feeling (for a Python conference) when some VIPs like Guido von Rossum and Alex Martelli were there.

Both my Advanced Graphics Programming with PyQt and David's PyQt for Desktop and Embedded Devices were well received. Things could still have been better, for example I had this funny voice due to my hay fever (which was fortunately cured faster thanks to the Italian warm weather) and I did not realize that I packed too much stuff in the talks. Still, we are pretty content with the way it went. Before you ask, according to the organizer, some time in the future the slides and the video will be available online.

Needless to say, the conference participants were friendly and very passionate. And it was good to meet Enrico again. I also met Matteo whose Qt examples show up from time to time on Planet Qt. We also finally got to know Giovanni and his colleagues from Develer, which was the main drive behind the conference organization. We met a lot of other fellows as well, including KDE evangelists from Salerno. It is still a shame I forgot almost all of my basic Italian, I need to ensure I must polish it before I go to Pycon Quattro.

Beside the conference, Florence proves to be as good as what people say about it. It is beautiful. Amazingly beautiful. And of course, the most important of it, the food was great, as great as it could be. Being a fan of Italian culinary I did sample few excellent dishes, like Pappa al pomodoro and spaghetti frutti di mare. Having dinner outside, in a narrow passage, with happy children running around you, did indeed give a surrealistic atmosphere.

The obligatory picture of the grandeur facade of the Basilica di Santa Maria del Fiore, the central tourist attraction in Florence, follows:

But nothing is more breath-taking than walking next to the river, reaching Ponte Vecchio, enjoying its stunning beauty at night, just on last Saturday when it was exactly full moon!

For more conference-related pictures, check out PyCon Tre Flickr group.

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Like I mentioned before, I will spend the next few days in Florence (Italy) for PyCon Italia. I'm preparing my slides and demos, including few things I never posted before (premier show, yay!), for the Advanced Graphics Programming with PyQt talk.

According to our flight schedule, tomorrow afternoon David and I shall be in Florence already; so anyone who want to have a chat, drop me an email (ariya.hidayat AT gmail DOT com).

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It's been one year I work for Qt Software (nee Trolltech). Two big releases: Qt 4.4 and Qt 4.5. Qt for S60. LGPL-ed Qt. Graphics Dojo. Going to Munich and Redwood City for DevDays. Things are exciting as ever.

In one month, I will be in Florence (Italy) for PyCon Italia. I'd have one technical talk: Advanced Graphics Programming with PyQt, see the abstract for details.

Check also other interesting talks in the schedule. For example, don't miss PyQt for Desktop and Embedded Devices by our Python+Qt guru, David Boddie. And yes, I would not dare to skip Guido von Rossum's keynote on Python 3.0.

If you will be around and want to have a snack or a chat, just let me know!

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The beauty of taking a trip from/to South East Asia is simply its ridiculous journey. In the last 72 hours, I have been in 6 different airports, gone through 7 hours timeshifting, trapped 3 times in inhuman traffic jams, exposed to 40 Kelvin temperature drop, and of course enjoyed only sporadic in-flight sleeps and food.

For my aging, weak body, it hardly comes as a surprise that I am K.O.

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I heard that seven is a magic number. I am seeing the seventh winter in my life. How magical.

For roughly 300 weeks I stay in Europe already. And I will still be here for some time to come. But after reaching some of my goals, missing many others, I decided I will pay my home country a visit.

Bracing for the impact of reverse culture shock.

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Things are still exciting as ever. In two weeks, I will be in Bali. Yes, I will be there for the Workshop on Open Source and Open Content (WOSOC) that is held in conjuction with IEEE Conference on Signal-Image Technology and Internet-based Systems.

Check out the full schedule, find the invited talk: Qt for Rapid Mobile Application Development, and enjoy some demos that I will premiere there.

So, if you are around and want to have a snack or a chat, just let me know! Mail me at ariya.hidayat@gmail.com.

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As I mentioned before, few hours more until Qt Developer Days 2008 at Hilton Munich Park. Feel free to contact me at ariya.hidayat@gmail.com if you are around!

/me is getting ready for the flight.

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