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Simplified Developer Experience with QML

Simplified Developer Experience with QML. innovate. OpenGL. Cross-platform. QtCreator. performance. Dynamic UIs. Transitions. Prototyping. Who are we?. Testers @ Nokia, working on MeeGo middleware. Badri. Raghu. Why are we here?. Great Technology It will make your life easier

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Simplified Developer Experience with QML

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  1. Simplified Developer Experience with QML innovate OpenGL Cross-platform QtCreator performance Dynamic UIs Transitions Prototyping

  2. Who are we? Testers @ Nokia, working on MeeGo middleware Badri Raghu

  3. Why are we here? • Great Technology • It will make your life easier • We Love it and we want to share it with you 

  4. Widget Model Window • UI’s using widgets are, • Clearly structured / Bulky • Static • Enforce standard platform look and feel • Very useful for traditional applications Widget Widget Widget Widget Widget Widget

  5. 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)

  6. 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.

  7. 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 etc The declarative language itself is simple and intuitive, the rest is javascript All the power and freedom of Qt is still available

  8. Declarative UI using QML Rectangle { id: page width: 500; height: 200 color: “lightgray” Text { id: helloText text: “Hello World” font.bold: true font.pointSize: 24 } } Hello World

  9. Example • simple list based menu with features to launch app, preview app and update it. • transitions with fluid UI • 2 persons, 4 hours each • 350 lines of code

  10. Qt + QML • Business logic can be written with Qt / C++ • UI layer can be designed with QML Great App Qt Code QML

  11. Common Questions • Common Components: • Currently, many of the standard components like buttons, textboxes etc are missing. But, they are under development. • Colibri – http://colibri.com • Performance • QML is optimized for performance • Animations, effects etc are generally very fast than what we produce with Qt

  12. Image Viewer Concept Big picture Thumbnails

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