Question about `androidx.compose.ui.input.mouse.Mo...

# compose-desktop

[Aaron Yoder]

Question about androidx.compose.ui.input.mouse.MouseScrollEvent and MouseScrollUnit : I am using a mouseScrollFilter and am wanting to perform some mathematical operations using the delta (for zoom on scroll), but I can't seem to figure out how to get the actual value from the delta, there's no accessors or anything for the raw Float value. I understand there's the line/page scroll values but those don't seem accessible either, so not sure if I'm just thinking about this incorrectly.

[Igor Demin]

there's no accessors or anything for the raw Float value

Usually there is no raw Float value (most of the mousses has discrete scroll; except maybe Magic mouse / touchpads)

there's no accessors or anything for the raw Float value

MouseScrollUnit is a sealed class, so you have to check every possible subclass:

val zoomLevel += when (event.delta) {
  is MouseScrollUnit.Line -> value
  is MouseScrollUnit.Page -> value
}

val zoom = zoomLevelToZoomn(zoomLevel)

[Aaron Yoder]

That clears up my confusion, thanks!