mirui 0.46.0

A lightweight, no_std ECS-driven UI framework for embedded, mobile, desktop, and WebAssembly
Documentation 
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extern crate alloc;

use crate::prelude::*;
use crate::types::Transform;
use crate::ui::widgets::{Image, ParagraphStyle, Text, TextAlign, WidgetTransform};

pub struct Spinner {
    pub angle: Fixed,
    pub speed: Fixed,
}

//~focus-start
#[mirui_macros::system(order = ANIMATION)]
pub fn spin_system(world: &mut World) {
    world.for_each_stable::<Spinner>(|world, e| {
        let next = if let Some(s) = world.get_mut::<Spinner>(e) {
            s.angle += s.speed;
            s.angle
        } else {
            return;
        };
        world.insert(e, WidgetTransform(Transform::rotate_deg(next)));
        world.invalidate(e);
    });
}
//~focus-end

#[compose]
pub fn build_widgets() {
    ui! {
        Column (
            grow: 1.0,
            align: AlignItems::Center,
            padding: Padding::all(12),
            row_gap: 10
        ) {
            Text (
                "AFFINE TRANSFORMS",
                width: Dimension::percent(100),
                max_width: 440,
                height: 28,
                font_size: 17,
                text_color: ColorToken::OnSurface,
                paragraph: ParagraphStyle::label().with_align(TextAlign::Start)
            )
            Row (
                width: Dimension::percent(100),
                max_width: 440,
                grow: 1.0,
                align: AlignItems::Center,
                justify: JustifyContent::SpaceAround,
                padding: Padding::all(18),
                bg_color: ColorToken::SurfaceVariant,
                border_radius: 18
            ) {
                Column (width: 120, align: AlignItems::Center, row_gap: 14) {
                    View (
                        width: 76,
                        height: 76,
                        bg_color: Color::rgb(248, 81, 73),
                        border_radius: 14
                    ) [
                        Spinner {
                            angle: Fixed::ZERO,
                            speed: Fixed::from_int(2),
                        },
                        WidgetTransform(Transform::IDENTITY),
                    ]
                    Text (
                        "VIEW",
                        width: 76,
                        height: 22,
                        font_size: 10,
                        text_color: ColorToken::OnSurfaceVariant,
                        paragraph: ParagraphStyle::label()
                    )
                }
                Column (width: 120, align: AlignItems::Center, row_gap: 14) {
                    Image (
                        width: 70,
                        height: 70,
                        src: "thumbs_up"
                    ) [
                        Spinner {
                            angle: Fixed::ZERO,
                            speed: Fixed::from_int(3),
                        },
                        WidgetTransform(Transform::IDENTITY),
                    ]
                    Text (
                        "IMAGE",
                        width: 76,
                        height: 22,
                        font_size: 10,
                        text_color: ColorToken::OnSurfaceVariant,
                        paragraph: ParagraphStyle::label()
                    )
                }
            }
        }
    };
}

#[cfg(feature = "std")]
pub fn setup_app<B, F>(app: &mut App<B, F>, parent: Entity)
where
    B: Surface,
    F: RendererFactory<B>,
{
    app.add_system(spin_system::system());
    app.add_plugin(crate::app::plugins::ImageResourcesPlugin::default());
    app.compose(parent, build_widgets);
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::ui::{Children, IdMap, UiScope};

    #[test]
    fn build_widgets_smoke() {
        let mut world = World::new();
        world.insert_resource(IdMap::new());
        let parent = WidgetBuilder::new(&mut world).id();
        let mut cx = UiScope::new(&mut world, parent);
        build_widgets(&mut cx);
        drop(cx);
        assert!(
            world
                .get::<Children>(parent)
                .is_some_and(|c| !c.0.is_empty()),
        );
    }
}