How can a modal popup intercept & prevent keypresses from reaching the main UI?

[barries]

I've implemented a modal popup that is rendered last, after rendering a dimming Ui, which is after rendering the main Ui. The dimming Ui paints a rect over the main UI and intercepts mouse events.

How can I react to keyboard input in the dialog, and forbid all keypresses, touches, mouse input from reaching the main UI "behind" the dimming Ui?

Thanks!

[barries]

Here's a hacky way I reroute key events "around" the main Ui when a modal is showing. Is there a more / more proper eguiish way (for example, this does not reroute mouse events--those are hit tested in a different data flow)?

        let is_modal_showing =  c.vm.modal_id != ModalId::None;

        let mut events = Vec::new();
        if is_modal_showing {
            ctx.input_mut(|input| events.append(&mut input.events));
        }

        egui::CentralPanel::default()
            .frame(
                Frame::none()
                    .inner_margin({
                        let margins = c.get_window_margins();
                        Margin::symmetric(margins.x, margins.y)
                    })
                    .fill(Color32::WHITE)
            )
            .show(ctx, |ui| {
               self.build_MainPage(ui, &c);
            })
            .inner;

        if is_modal_showing {
            ctx.input_mut(|input| input.events.append(&mut events));
            log_if_changed!("{:?}", ctx.input(|i| i.events.clone()));
            show_modal(ctx, &c);
        }