process full

MainActivity.kt

fun process(
    pointerEvent: PointerInputEvent,
    positionCalculator: PositionCalculator
): ProcessResult {

    // Gets a new PointerInputChangeEvent with the PointerInputEvent.
    val internalPointerEvent =
            pointerInputChangeEventProducer.produce(pointerEvent, positionCalculator)

    // Add new hit paths to the tracker due to down events.
    internalPointerEvent.changes.values.forEach { pointerInputChange ->
        if (pointerInputChange.changedToDownIgnoreConsumed()) {
            root.hitTest(
                    pointerInputChange.position,
                    hitResult
            )
            if (hitResult.isNotEmpty()) {
                hitPathTracker.addHitPath(pointerInputChange.id, hitResult)
                hitResult.clear()
            }
        }
    }

    // Remove [PointerInputFilter]s that are no longer valid and refresh the offset information
    // for those that are.
    hitPathTracker.removeDetachedPointerInputFilters()

    // Dispatch to PointerInputFilters
    val dispatchedToSomething = hitPathTracker.dispatchChanges(internalPointerEvent)

    var anyMovementConsumed = false

    // Remove hit paths from the tracker due to up events, and calculate if we have consumed
    // any movement
    internalPointerEvent.changes.values.forEach { pointerInputChange ->
        if (pointerInputChange.changedToUpIgnoreConsumed()) {
            hitPathTracker.removeHitPath(pointerInputChange.id)
        }
        if (pointerInputChange.positionChangeConsumed()) {
            anyMovementConsumed = true
        }
    }

    return ProcessResult(dispatchedToSomething, anyMovementConsumed)
}