Qt Developer Days 2009 Keynote - Portable UIs
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Matthias is a well-known member of the Free Software Community. He created the LyX document-processor and is a founder of the K Desktop Environment (KDE), which aims at providing Linux and Unix systems with a familiar and friendly graphical user interface. KDE is built with the Qt toolkit created by Trolltech, now Nokia Qt Development Frameworks. As VP Engineering, Matthias lead the Qt development team during the creation of Qt 4. Today he is the head of Nokia Qt Development Framework's R&D office in Berlin, working among others on Qt Creator. Keynote held during Qt Developer Days 2009. http://qt.nokia.com/developer/learning/elearning
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Presentation by Alessandro Portale held during Qt Developer Days 2009.
http://qt.nokia.com/developer/learning/elearning
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http://qt.nokia.com/developer/learning/elearning
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Modern applications are more and more moving away from static forms. In a modern interface, widgets and graphical elements are animated and transitioned smoothly. Those effects make your application look good but their main purpose should be to help end-users find out what's going on in their applications. In upcoming Qt versions we’re adding a new Animation Framework that relies upon Qt’s QObject-based architecture.
Presentation by Thierry Bastian held during Qt Developer Days 2009.
http://qt.nokia.com/developer/learning/elearning
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Presentation by Jens Bache-Wiig held during Qt Developer Days 2009.
http://qt.nokia.com/developer/learning/elearning
Debugging Qt, Fixing and Contributing a Bug Report (Using Gitorious)
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Presentation by Simon Hausmann held during Qt Developer Days 2009.
http://qt.nokia.com/developer/learning/elearning
The Mobility Project
The Qt Mobility project is developing new Qt APIs. These APIs will benefit all Qt developers. This presentation shall provide an overview of the APIs and demonstrate the use of some the APIs through an example application. This presentation shall fuel ideas for usage of the new APIs in your own projects.
Presentation by Alex Luddy held during Qt Developer Days 2009.
http://qt.nokia.com/developer/learning/elearning
Copy Your Favourite Nokia App with Qt
Weather service, maps and navigation, photo viewer, instant messaging, web browser, flick list or kinetic scrolling. You want all these with Qt? You get it!
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http://qt.nokia.com/developer/learning/elearning
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Qt Developer Days 2009 Keynote - Portable UIs
- 1. QML, the future of Qt’s UI New Paradigms for Portable User Interfaces
- 2. What Determines a User Interface (UI) • Graphics Power • Screen • Input Method • Purpose
- 3. What Determines a User Interface (UI) 15 years ago • Graphics Power 2D primitives • Screen 75dpi • Input Method keybord, joystick, mouse • Purpose offline content creation, calculation
- 4. What Determines a User Interface (UI) Today • Graphics Power animated 3D rendering • Screen 240dpi • Input Method keyboard, stylus, touch, accelerometer • Purpose managing huge amounts of content (online & offline), communication, collaboration, fun
- 5. Widget Model Window Widget Widget Widget Widget Widget Widget
- 6. Widget Model • Widgets are rectangular • Widgets have a parent and optional child widgets • Widgets are clipped to their parent and clip their children • Widgets draw the pixels they are responsible for • Widgets manage their content • Widgets are expensive to show/hide/move/resize • Widgets are (almost) impossible to flip/rotate/stretch
- 7. Example 1: A List of Items
- 8. Example 1: A List of Items
- 9. Widget Model UIs using widgets are – Clearly structured / Bulky – Static – Enforcing standard platform look and feel – Very useful for traditional applications
- 10. The Future Widgets
- 11. What do we want? • Express a UI the way we think about it: components, views, states, transitions, animations and effects • Connect the UI to real data and back-end functionality • Everything should be fast and easy • In fact so easy that also designers can do it (e.g. the sort of people doing Flash, Silverlight and Web)
- 12. What do we want? • A world where developers and designers work directly together on the same project • A world where a UI is determined by its usability and not by limitations of the underlying technology
- 13. Meet QML • QML is a new declarative language extension to Qt • It maps almost directly to how you should think about a UI: components, views, states, transitions, animations and effects • The declarative language itself is simple and intuitive, the rest is JavaScript. • All the power and freedom of Qt is still available
- 15. Summary • QML is a new declarative language extension to Qt • It provides you with all the elements you need to think about a UI and nothing more • It allows complete concentration on the UI and finding and solving problems as fast as possible • It’s so simply and intuitive that designers and developers can work directly together • Programmers: You will never want to code a UI in C++ again • Designers: You will never need to prototype the UI with a separate technology again