Albert Astals Cid gave an introduction to Qt Quick at FrOSCon 2006. He began with an overview of his background and experience with Qt. He then provided a brief history of Qt and its evolution. Qt Quick is explained as a declarative language called QML used to describe user interfaces with properties that can be bound together. Astals Cid demonstrated Qt Quick concepts with simple examples and showed larger demos of Flickr, SameGame, and a PhotoViewer. He discussed benefits like separation of interface and logic and designer friendliness, as well as potential problems like lack of style consistency and being a new technology.

1. Sebastian Kügler <sebas@kde.org>, FrOSCon 2006
Albert Astals Cid <aacid@kde.org>
Qt Quick
An Introduction to Qt Quick
Albert Astals Cid

2. Sebastian Kügler <sebas@kde.org>, FrOSCon 2006
Albert Astals Cid <aacid@kde.org>
Qt Quick
Who is Albert Astals Cid?
 It's me!
 Computer Engineer by UPC
 Using Qt since 2002
 KDE developer since 2003
 A TOTAL Qt Quick newbie

3. Sebastian Kügler <sebas@kde.org>, FrOSCon 2006
Albert Astals Cid <aacid@kde.org>
Qt Quick
A bit of history
 Qt development starts in 1990
 Qt prototype in 1993
 Qt 1.0 is released in 1996
 KDE 1.0 is releaed in 1998
 Qt adds support for Mac in 2001
 Apple introduces the iPhone in 2007
 Nokia adquires Trolltech in 2008
 December 2009 Qt 4.6 is releaed with Symbian support

4. Sebastian Kügler <sebas@kde.org>, FrOSCon 2006
Albert Astals Cid <aacid@kde.org>
Qt Quick
What is Qt Quick?
Qt Quick is a collection of technologies that are designed to help developers create
the kind of intuitive, modern-looking, fluid user interfaces that are increasingly
used on mobile phones, media players, set-top boxes and other portable devices.
Who let Marketing write that?
Qt Quick is the marketing name for QML and some tools around it
QML is a declarative language designed to describe the user interface of a
program: both what it looks like, and how it behaves.

5. Sebastian Kügler <sebas@kde.org>, FrOSCon 2006
Albert Astals Cid <aacid@kde.org>
Qt Quick
Declarative? What's that?
 You say what you want and not what to do
Example 1 – declarative
Example 2 – imperative
 More or less the same
 Example 3
 still would be “Ok” with imperative programming
 Example 4
 Binding properties
 Example 5
 Would be a huge pain to do in regular imperative programming

6. Sebastian Kügler <sebas@kde.org>, FrOSCon 2006
Albert Astals Cid <aacid@kde.org>
Qt Quick
Bigger Examples
 Flickr
 SameGame
 PhotoViewer

7. Sebastian Kügler <sebas@kde.org>, FrOSCon 2006
Albert Astals Cid <aacid@kde.org>
Qt Quick
Benefits
 Clear separation between interface and business logic
 Designer friendly
 CSS/Javascript-like
●Shiny
Problems
 No common style between applications (Qt Components might fix this 4.x?.8?.9?
 Different way of thinking
 New/Untested/buggy
 Reduced use case

8. Sebastian Kügler <sebas@kde.org>, FrOSCon 2006
Albert Astals Cid <aacid@kde.org>
Qt Quick
Questions?