PointerEventPass

public enum class PointerEventPass {
    Initial,
    Main,
    Final,
}

The enumeration of passes where PointerInputChange traverses up and down the UI tree.

PointerInputChanges traverse throw the hierarchy in the following passes:

1. Initial: Down the tree from ancestor to descendant.
2. Main: Up the tree from descendant to ancestor.
3. Final: Down the tree from ancestor to descendant.

These passes serve the following purposes:

is where, for example, a scroller may block buttons from getting tapped by other fingers once scrolling has started.

1. Initial: Allows ancestors to consume aspects of PointerInputChange before descendants. This

PointerInputChanges. This is the primary path where descendants will interact with PointerInputChanges before parents. This allows for buttons to respond to a tap before a container of the bottom to respond to a tap.

2. Main: The primary pass where gesture filters should react to and consume aspects of

consumed by parents during the Main pass. For example, this is how a button determines that it should no longer respond to fingers lifting off of it because a parent scroller has consumed movement in a PointerInputChange.

3. Final: This pass is where children can learn what aspects of PointerInputChanges were

Members

Initial

Initial

Main

Main

Final

Final