How can I determine a hidden window's size?

[Enyium]

I need to center a newly displayed dialog window (from a Dialog .slint component) on another window (the app's main window). But the size of the dialog window before calling show(), as reported by slint::Window::size() -> PhysicalSize, is 800x600, which is incorrect and simply seems to be a default size on Windows.

Calling Window::request_redraw() before doesn't work. Calling show() directly before centering also doesn't work. As a workaround, I have to defer the centering on the main window with dialog.as_weak().upgrade_in_event_loop(...), which means show() will run before.

Is a function that ensures layouting at a point in time required by the developer missing?

[hunger]

We do not seem to have a good solution for this: I took the liberty to open #6724 for this.

Sorry for leaving this open for so long! That should not happen.

[Enyium]

Thank you!

There's another question from me still open: #5758. It's not urgent, but important for me. It would be great if this could be addressed at some point in the future, even if only one subtopic at a time. Perhaps, concrete issues for what's not quite supported yet could come out of this.