Hi,
I cannot get resolved height of a visual element on start/OnEnable. This is something I will have to do a lot for placing elements off screen.
I know you can do it if you wait a frame or two, but this seems like a workaround.
Just curious if this will change or is this the official way to do it, using a Coroutine private IEnumerator Start() to wait a frame before doing all these calculations?
Thanks!
This will indeed remain an asynchronous process but we may expose a way to force layout to happen synchronously.
In the meantime the most straightforward way to do this is to listen for GeometryChangeEvent on the element you’re interested.
Got it, thanks!
Should I then not use WaitForEndOfFrame() in start and use that callback instead? Just curious in case my method has some disadvantages such as not working 100%? Or will my method work 100% of the time?
Thanks!
I think it will work 100%. It’s just that this GeometryChangedEvent is managed by UI Toolkit and works even in the editor, while the WaitForEndOfFrame() & coroutines are Unity wide constructs.
Effectively layout should be processed between Update() and LateUpdate() so end of frame is safe.
Perfect, thanks!