[vtk-developers] Widget redesign

[Will Schroeder]

I wanted to provide some status on the work.

Lisa Avila had the idea to allow "parenting" of widgets. This simply 
means that widgets, rather than observing events from the 
vtkRenderWindowInteractor, observe events from a parent widget. This 
reduces event contention, allows for hierarchies of widgets, and it 
is much easier to create widgets that are composed of other widgets. 
The change was rather simple and involved adding a Set/GetParent 
methods to vtkAbstractWidget, and adding a method to 
vtkWidgetEventTranslator to add registered events to a parent rather 
than an interactor.

We have also found away to direct events based on the idea of "focus" 
that Prabhu mentioned. We are still experimenting to see what this means.

There is a CVS branch "Widgets-Redesign" that you can take a look at 
to see where we are.

Happy Widgeting,
Will