kinetic scrolling: the state machine

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.

Cross Platform Qt

View more documents from Nokia, Qt Development Frameworks.

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 :)

bye amsterdam. next stop: munich

Today is the last day of Maemo Summit 2009. I am sure the news spreads quickly; everyone and his uncle know already that Nokia lends around 300 shiny N900 (preproduction devices), worth 500 EUR, to the summit participants, excluding Nokia employees and contractors. It's Christmas in Amsterdam!

I had done my Cross Platform with Qt talk, I was quite content with it (that hopelessly small room was jam-packed). There were (and still will be) many other interesting tracks as well. For the detailed coverage, check out All About Maemo site, they are doing great jobs keeping the rest of the world up-to-date with the latest excitements from WesterGasFabriek.

While waiting in Schiphol for my next flight to Munich (for Qt Developer Days 2009), I had a quick glance at some of photos taken in the last few days. Let me just post one:

One evening, we picked Restaurant Sari Citra for our dinner. It serves Indonesian cuisine, the proof is the picture above. You have the choice to mix your own rice dish, such Nasi Kuning (rice with coconut milk and turmeric) with Tempe Kering (slices of fried, crispy tempe mixed with peanuts), Perkedel Kentang (mashed potato fritters) along with a wide selection of vegetables. Authentic experience with a reasonable price. Everyone enjoyed the dinner; happy Trolls :)

And see you in Munich!

Maemo Summit 2009 - Live

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!

Maemo Summit 2009, Amsterdam, 9-11 Oct

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).