custom dialog using fltk-rs

custom_dialog.rs

use fltk::{
    app, button,
    enums::{Color, Font, FrameType},
    frame, group, input,
    prelude::*,
    window,
};

fn style_button(btn: &mut button::Button) {
    btn.set_color(Color::Cyan);
    btn.set_frame(FrameType::RFlatBox);
    btn.clear_visible_focus();
}

pub fn show_dialog() -> MyDialog {
    MyDialog::default()
}

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

impl MyDialog {
    pub fn default() -> Self {
        let mut win = window::Window::default()
            .with_size(400, 100)
            .with_label("My Dialog");
        win.set_color(Color::from_rgb(240, 240, 240));
        let mut pack = group::Pack::default()
            .with_size(300, 30)
            .center_of_parent()
            .with_type(group::PackType::Horizontal);
        pack.set_spacing(20);
        frame::Frame::default()
            .with_size(80, 0)
            .with_label("Enter name:");
        let mut inp = input::Input::default().with_size(100, 0);
        inp.set_frame(FrameType::FlatBox);
        let mut ok = button::Button::default().with_size(80, 0).with_label("Ok");
        style_button(&mut ok);
        pack.end();
        win.end();
        win.make_modal(true);
        win.show();
        ok.set_callback({
            let mut win = win.clone();
            move |_| {
                win.hide();
            }
        });
        while win.shown() {
            app::wait();
        }
        Self { inp }
    }
    pub fn value(&self) -> String {
        self.inp.value()
    }
}

fn main() {
    let a = app::App::default();
    app::set_font(Font::Times);
    let mut win = window::Window::default().with_size(600, 400);
    win.set_color(Color::from_rgb(240, 240, 240));
    let mut btn = button::Button::default()
        .with_size(80, 30)
        .with_label("Click")
        .center_of_parent();
    style_button(&mut btn);
    let mut frame = frame::Frame::new(btn.x() - 40, btn.y() - 100, btn.w() + 80, 30, None);
    frame.set_frame(FrameType::BorderBox);
    frame.set_color(Color::Red.inactive());
    win.end();
    win.show();
    btn.set_callback(move |_| {
        let d = show_dialog();
        frame.set_label(&d.value());
    });
    a.run().unwrap();
}