Here is another proof that Qt is not as ubiqutious as I would like it to be. When I ask around what developers use to develop desktop apps using web technologies (HTML, JavaScript, CSS), the choice is either Adobe AIR or Titanium Desktop. Seems that a lot of people overlook Qt and its built-in WebKi...

According to The Green Book:

In few weeks, I am scheduled to talk at Intel AppUp(SM) Elements 2011 in Seattle (or rather more precisely, in Bellevue). My presentation would be about hybrid applications (native + web) using QtWebKit. The short abstract is as follows:

Happy Eid to all!

This is the final part of my weekly series on how to write a math expression evaluator in JavaScript. If you haven’t do so, it is recommended that you read the first part (on lexical analysis) and second part (on parsing and syntax tree) before digesting this blog post.

Update: Read also the approach to detect Boolean traps (in JavaScript apps) using a simple script.

This is the second part of my weekly series on how to write a math expression evaluator in JavaScript. If you miss the first part, which was about lexical analysis, go and read it first and come back later.

This will be the first part of a series of weekly blog posts where I outline the steps necessary to create a math expression evaluator using ECMAScript. By the end of the series, you expect to know the magical machinery which can understand and compute the result of the following expression:

66 years have passed since the Proclamation of Indonesian Independence.

This is something I’ve already pointed out during my talk at SenchaCon 2010 last year as well as the recent Velocity 2011.

Nokia N950 is essentially the developer version of Nokia N9 (see the side-by-side comparison), the software stack is the same, i.e. MeeGo 1.2 Harmattan. While N9 is way more polished since it is targeted as a consumer smartphone, N950 still feels solid and good-looking, a long overdue replacement fo...

Dissolve effect from one image to another is easily achieved by varying the opacity properly. With CSS animation feature, this does not even require any extra JavaScript code.

If you live in the Bay Area, you would be familiar with the chatter on how difficult it is to hire talented engineers these days. Well, looking back at tons of interviews I have done, that comes hardly as a big surprise. Seems that our education system still produces generations and generations of e...

Usually you don’t want to do this, but in a rare occasion, sometimes you want to be able to have a web page that is logically as wide as the physical pixels of the browser, especially on the mobile devices. In this situation, one CSS pixel (px) will be exactly one physical pixel as depicted on the s...

This one is basically the logical next step after I did the analysis of various tablets with respect to its DOM performance. After testing tablets, now I am switching to smartphones. The methodology is the same: leveraging Dromaeo set of DOM tests.

Benchmarks, and the results of running them, are attractive because they eliminate the need to digest an arbitrary complex machinery, reducing it into a meaningful and powerful number. Comparison is thereby made easier, as it is now a matter of playing who has the biggest gun game.

Those who work on web-based applications on mobile platforms often recall the advice, “Use translate3d to make sure it’s hardware accelerated”. This advice seems magical at first, and I seldom find anyone who explains (or wants to explain) the actual machinery behind such a practical tip. For a whil...

PhantomJS, the headless QtWebKit tool, is now listed as one of the Qt Ambassador show cases. There is also a growing list of projects using PhantomJS (let me know if you want to be listed). In fact, PhantomJS running in several Amazon EC2 instances is used as the primary tool in a web security analy...

Sometime back I wrote (fun fact: it’s Google first hit for faster quaternion multiplication) about my favorite commit I did exactly two years ago to Qt :

Imagine you have to create a CAD-grade application, e.g. drawing the entire wireframe of a space shuttle or showing the intricacies of 9-layer printed circuit board. Basically something that involves a heavy work to display the result on the screen. On top of that, the application is still expected ...

One of the most often question I got, “Since browser Foo and browser Bar are using the same WebKit engine, why do I get different feature set?”.

Thorsten Zachmann, from Calligra (and previously KOffice) fame, asked me once on how to draw a different kind of gradient: a rectangular one. While Qt itself has built-in supports for linear, radial, and conical gradient types, apparently for office apps we may need more than that. In short, the goa...

One of the early graphical web browser that got really popular was Mosaic, developed at National Center for Supercomputing Applications (NCSA). Some folks from the team, along with SGI founder Jim Clark, decided that it’s worth a venture and formed a company, originally called Mosaic Communication a...

It’s a mixed feeling. Personally it was (always) fun to meet my former coworkers from Qt, Nokia and other KDE folks and catch up and exchange tech gossips. I am also excited to get to know MeeGo team from Intel side as well. The conference itself is professionally organized. The Hacker Lounge idea i...

It’s MeeGo time! 2011 conference will be held in Hyatt Regency, San Francisco.

Currently stranded at TPE. Few minutes before leaving SFO I managed to tag 1.1.0 release for PhantomJS (lesson learned: never attempt a release few hours before boarding). Thanks to Ivan and Alessandro, few source tarballs and binaries are now ready.

Camp KDE 2011 was a fabulous experience. First of all, there is definitely something with me and Camp KDE. The previous one was in San Diego and at that time I was there working for Qualcomm. This year it is San Francisco, right after I moved to the Bay Area.

My first Camp KDE experience was when it was held in San Diego, which was also interesting since at that time, I just moved there.

At the last successful, sold-out Sencha Conference 2010, I did two introductory talks about JavaScript and WebKit, mainly targeted for web application developers. Since a few weeks ago, the videos for these talks have been available for you to watch.