GPUI

Render

The Render trait is what allows a type to draw elements to the screen. This is what turns the T type of a Entity<T> into what is commonly referred to as a view. A view is the retained mode rendering of GPUI, it will not re-render unless it is notified. Views can contain components which implement RenderOnce, these components are the immediate mode rendering of GPUI, you can learn more in the RenderOnce section.

Implementation

use gpui::{AppContext, Application, Context, IntoElement, Render, Window, WindowOptions, div};

struct RootView;

impl Render for RootView {
    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
        div()
    }
}

fn main() {
    Application::new().run(|app| {
        app.open_window(WindowOptions::default(), |_window, app| {
            app.new(|_cx| RootView)
        })
        .unwrap();
    });
}