zed/crates/gpui/examples/hello_world.rs

use gpui::*;

struct HelloWorld {
    text: SharedString,
}

impl Render for HelloWorld {
    fn render(&mut self, _cx: &mut ViewContext<Self>) -> impl IntoElement {
        div()
            .flex()
            .bg(rgb(0x2e7d32))
            .size(Length::Definite(Pixels(300.0).into()))
            .justify_center()
            .items_center()
            .shadow_lg()
            .border_1()
            .border_color(rgb(0x0000ff))
            .text_xl()
            .text_color(rgb(0xffffff))
            .child(format!("Hello, {}!", &self.text))
    }
}

fn main() {
    App::new().run(|cx: &mut AppContext| {
        let bounds = Bounds::centered(None, size(px(300.0), px(300.0)), cx);
        cx.open_window(
            WindowOptions {
                window_bounds: Some(WindowBounds::Windowed(bounds)),
                ..Default::default()
            },
            |cx| {
                cx.new_view(|_cx| HelloWorld {
                    text: "World".into(),
                })
            },
        )
        .unwrap();
    });
}