Extensions

OSUI Extensions are a practical way to extend the possibilities with OSUI, Extensions allow for there to be a specific use or functionality that may otherwise be bloat or the opposite behavior of the use case.

screen.extension(&mut self, ext: E)

You likely noticed that we used this function in the Hello World App With Velocity example, this function simply allows for structures implementing Extension to be included in the program.

Trait Extension

init(&self, _widgets: &Vec<Arc<Widget>>)

Runs right after the Transform component is applied to every widget.

render(&self, _widget: &Arc<Widget>)

Runs right before the Element::render is called.