Gui Internals of qooxdoo

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Introduction into qooxdoo's internal rendering and queuing mechanics.

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Gui Internals of qooxdoo

  1. 1. GUI Internals of qooxdoo Webinale 2008, Germany Fabian Jakobs
  2. 2. Fabian Jakobs • Software Developer at 1&1 Internet AG Since 2007
  3. 3. Rendering Process • Recursive Operation with Two Passes • Measurement Pass • Arrangement Pass
  4. 4. Size Hints • Preferred Dimension of a Widget • Developer can Override Them
  5. 5. Layout Managers • Implement Basically Two Methods to: • Compute the Size Hint • Do the Actual Rendering
  6. 6. Queuing • Widget Jobs • State Changes • Decorator Updates • Layout Compution • DOM Element Flush • Disposer Work
  7. 7. Events • Central Managment of Events • Custom Dispatchers • Bubbling and Capturing Phase • Normalized Mouse and Keyboard Support • Capable Focus Sub System
  8. 8. DOM Flush • Normalization of Styles and Attributes • Managed Synchronization to the DOM • Connection to the Event System
  9. 9. Questions?

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