Reduce Boilerplate in pointerMotionEvent

[cybercoder-naj]

Every time I use the callback function, I need to assign the motionEvent enum type to the function. Is there a way to reduce this boilerplate code?

Currently

@Composable
fun Component() {
  var motionEvent by remember { mutableStateOf(MotionEvent.Idle) } 
  Canvas(
    modifier = Modifier
      .clipToBounds()
      .pointerMotionEvents(
        onDown = { motionEvent = MotionEvent.Down; /* more code */},
        onMove = { motionEvent = MotionEvent.Move; /* more code */},
        /* etc */
      )
  ) { /* Drawing the elements */}
}

Proposal

@Composable
fun Component() {
  val motionEvent = rememberMotionEvent() 
  Canvas(
    modifier = Modifier
      .clipToBounds()
      .pointerMotionEvents(motionEvent) {
        onDown = {/* no need to manually set motionEvent */}
        onMove = {/* no need to manually set motionEvent */}
        /* etc */
      }
  ) { /* Drawing the elements */}
}

[SmartToolFactory]

I can add option to assign a State like LazyColumn does. That why you can get touch state via it. If you have any suggestion feel free to post it

[cybercoder-naj]

Sure! I'll experiment with it soon and see what we can do.