Unlucky-Launcher/crates/app/ui/components/progress-bar.slint

// 细进度条（0.0~1.0）：安装进度 / 下载页顶部 / 向导进度共用。
// 未知总量（known = false）时画一条不确定态的弱色轨道，而不是假装 0%。
import { Theme } from "../theme/tokens.slint";
import { Metrics } from "../theme/metrics.slint";

export component ProgressBar inherits Rectangle {
    in property <float> ratio: 0.0;
    in property <bool> known: true;
    in property <length> bar-height: 6px;

    height: root.bar-height;
    border-radius: root.bar-height / 2;
    background: Theme.bg-hover;
    clip: true;

    Rectangle {
        x: 0;
        y: 0;
        width: root.known ? max(0px, root.width * clamp(root.ratio, 0.0, 1.0)) : 0px;
        height: root.height;
        border-radius: root.bar-height / 2;
        background: Theme.accent;
        animate width { duration: 180ms; easing: ease-out; }
    }

    if !root.known : Rectangle {
        x: 0;
        y: 0;
        width: root.width / 3;
        height: root.height;
        border-radius: root.bar-height / 2;
        background: Theme.accent-soft;
    }
}