Right to Left input (for RTL languages).

rtl_input.rs

use fltk::{enums::*, prelude::*, *};
use std::ops::{Deref, DerefMut};

pub struct RtlInput {
    inp: input::Input,
}

impl RtlInput {
    pub fn new(x: i32, y: i32, w: i32, h: i32, label: &'static str) -> Self {
        let mut inp = input::Input::new(x, y, w, h, label).with_align(Align::Right);
        let mut frame = frame::Frame::new(x, y, w, h, None).with_align(Align::Inside | Align::Right);
        frame.set_frame(FrameType::DownBox);
        frame.set_color(Color::White);
        inp.set_trigger(CallbackTrigger::Changed);
        inp.set_callback(move |i| {
            frame.set_label(&i.value());
        });
        Self {
            inp
        }
    }
}

impl Deref for RtlInput {
    type Target = input::Input;

    fn deref(&self) -> &Self::Target {
        &self.inp
    }
}

impl DerefMut for RtlInput {
    fn deref_mut(&mut self) -> &mut Self::Target {
        &mut self.inp
    }
}

fn main() {
    let app = app::App::default();
    let mut win = window::Window::default().with_size(400, 300);
    let _inp = RtlInput::new(160, 190, 100, 40, "الاسم");
    win.end();
    win.show();
    app.run().unwrap();
}