leptos-use/examples/use_element_size/src/main.rs

use leptos::html::Textarea;
use leptos::prelude::*;
use leptos_use::docs::{demo_or_body, Note};
use leptos_use::{use_element_size, UseElementSizeReturn};

#[component]
fn Demo() -> impl IntoView {
    let el = NodeRef::<Textarea>::new();

    let UseElementSizeReturn { width, height } = use_element_size(el);

    let text = move || format!("width: {}\nheight: {}", width.get(), height.get());

    view! {
        <Note class="mb-2">"Resize the box to see changes"</Note>
        <textarea
            node_ref=el
            readonly
            class="resize rounded-md p-4 w-[200px] h-[100px] text-2xl leading-10"
            prop:value=text
        ></textarea>
    }
}

fn main() {
    _ = console_log::init_with_level(log::Level::Debug);
    console_error_panic_hook::set_once();

    let unmount_handle = leptos::mount::mount_to(demo_or_body(), || {
        view! { <Demo/> }
    });

    unmount_handle.forget();
}