hydrolysis-m3 0.3.0

Material 3 widget theme for WaterUI self-drawn backends
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use vello::kurbo::{Rect, RoundedRectRadii};
use waterui_backend_core::widget::{BadgeMetrics, DrawContext};

use crate::{Brush, theme::colors::MaterialColorScheme};

pub const fn metrics() -> BadgeMetrics {
    BadgeMetrics::new(6.0, 16.0, 4.0, 6.0, 6.0, 12.0, 14.0)
}

pub fn label_color(colors: &MaterialColorScheme) -> waterui_graphics::color::Color {
    colors.on_error.view_color()
}

pub fn draw_small(colors: &MaterialColorScheme, draw: &mut dyn DrawContext, bounds: Rect) {
    let radius = bounds.height().min(bounds.width()) * 0.5;
    draw.fill_circle(
        bounds.center(),
        radius,
        &Brush::Solid(colors.error.peniko()),
    );
}

pub fn draw_large(colors: &MaterialColorScheme, draw: &mut dyn DrawContext, bounds: Rect) {
    let radius = bounds.height() * 0.5;
    draw.fill_rounded_rect(
        bounds,
        RoundedRectRadii::from_single_radius(radius),
        &Brush::Solid(colors.error.peniko()),
    );
}

#[cfg(test)]
mod tests {
    use super::metrics;

    #[test]
    fn badge_metrics_match_compose_badge_tokens() {
        let metrics = metrics();

        assert_eq!(metrics.small_size, 6.0);
        assert_eq!(metrics.large_size, 16.0);
        assert_eq!(metrics.large_horizontal_padding, 4.0);
        assert_eq!(metrics.small_offset_x, 6.0);
        assert_eq!(metrics.small_offset_y, 6.0);
        assert_eq!(metrics.large_offset_x, 12.0);
        assert_eq!(metrics.large_offset_y, 14.0);
    }
}