Incular Docs

RotatedBox { quarter_turns: i32, child: Widget } rotates by integral quarter-turns (layout swaps axes for odd counts).

use incular::prelude::*;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let app = Application::new(|_cx| {
        Container::builder()
            .padding(EdgeInsets::all(24.0))
            .alignment(Alignment::CENTER)
            .child(RotatedBox::new(1, Text::new("Sideways")))
            .build()
            .into()
    })?;
    incular::run(app)?;
    Ok(())
}

For arbitrary angles use Transform rotation instead.

Related: Transform.