tuix 0.2.0

Cross-platform GUI toolkit
Documentation 
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use tuix::*;
use rand::prelude::*;

const STYLE: &str = r#"

    button {
        child-space: 1s;
        border-radius: 3px;
        color: black;
        background-color: #d2d2d2;
    }

    button:hover {
        background-color: #e2e2e2;
    }

    button:active {
        background-color: #c2c2c2;
    }
"#;

#[derive(Debug, Clone, PartialEq)]
enum CustomEvent {
    ChangeColor(Color),
}

#[derive(Default)]
struct Container {
    button: Entity,
}

impl Widget for Container {
    type Ret = Entity;
    type Data = ();
    fn on_build(&mut self, state: &mut State, container: Entity) -> Self::Ret {

        self.button = Button::with_label("Change Color")
            .on_press(|_, state, button| {
                // Generate a random color and send it to the container via a ChangeColor message
                let r: u8 = rand::thread_rng().gen();
                let g: u8 = rand::thread_rng().gen();
                let b: u8 = rand::thread_rng().gen();
                button.emit(state, CustomEvent::ChangeColor(Color::rgba(r, g, b, 255)));
            })
            .build(state, container, |builder| {
                builder
                    .set_width(Pixels(210.0))
                    .set_height(Pixels(30.0))
                    .set_space(Stretch(1.0))
            });

        container.set_background_color(state, Color::white())
    }

    fn on_event(&mut self, state: &mut State, container: Entity, event: &mut Event) {
        if let Some(custom_event) = event.message.downcast() {
            match custom_event {
                CustomEvent::ChangeColor(color) => {
                    container.set_background_color(state, *color);
                }
            }
        }
    }
}

fn main() {
    let app = Application::new(
    WindowDescription::new()
            .with_title("Button")
            .with_inner_size(300, 300),
    |state, window| {

            state.add_theme(STYLE);
            
            Container::default().build(state, window, |builder| builder);
        },
    );

    app.run();
}