---
title: "Tooltip 组件 — zenit Zig UI"
description: "为控件提供短小补充说明。四向定位、hover 延迟、portal 层级和离开 dismiss 不改变布局树。"
url: https://zenit.z.express/zh/components/tooltip
language: zh-CN
alternate_en: https://zenit.z.express/components/tooltip.md
alternate_es: https://zenit.z.express/es/components/tooltip.md
alternate_ja: https://zenit.z.express/ja/components/tooltip.md
alternate_ko: https://zenit.z.express/ko/components/tooltip.md
alternate_fr: https://zenit.z.express/fr/components/tooltip.md
alternate_de: https://zenit.z.express/de/components/tooltip.md
project: zenit v0.1.0-alpha (Zig 0.15.2, macOS)
source: https://github.com/version-next/zenit
---

# Tooltip

`ui.widgets.Tooltip`

为控件提供短小补充说明。

[Video](https://zenit.z.express/media/stories/tooltip.mp4?v=64c28daff2)

**BEHAVIOR CONTRACT**

四向定位、hover 延迟、portal 层级和离开 dismiss 不改变布局树。

**RECORDED INTERACTION**

虚拟鼠标悬停 Top trigger，气泡真实出现。

`examples/storybook/stories.zig:2475`

```zig
// ── Tooltip ──
pub fn buildTooltip(scope: *ui.Scope, cx: *ui.Cx) anyerror!*ui.Node {
    const a = cx.allocator;
    const c = try col(cx, 12);
    try c.appendChild(a, try label(cx, "Hover a button to see the tooltip (4 positions)"));

    // 四个主方向各一个 trigger，间距大些避免弹层重叠。
    const grid = try ui.box(cx, .{ .direction = .row, .gap = 24, .align_items = .center }, .{});
    const positions = [_]struct { p: W.tooltip.TooltipPosition, t: []const u8 }{
        .{ .p = .top, .t = "Top" },
        .{ .p = .bottom, .t = "Bottom" },
        .{ .p = .left, .t = "Left" },
        .{ .p = .right, .t = "Right" },
    };
    inline for (positions) |spec| {
        const tt = try W.Tooltip(.{ .text = spec.t ++ " tooltip", .position = spec.p }).mount(scope, cx);
        try tt.trigger.appendChild(a, try W.Button(.{ .label = spec.t, .variant = .secondary }).mount(scope, cx));
        try grid.appendChild(a, tt.wrapper);
    }
    try c.appendChild(a, grid);
    return c;
}
```

[在 GitHub 查看源码examples/storybook/stories.zig:2475](https://github.com/version-next/zenit/blob/HEAD/examples/storybook/stories.zig#L2475)

这是 Storybook 中该 story 的原样代码（zenit 5f9add5+wip 2026-09-30）。其中 `W` 即 `ui.widgets`，`col` / `row` / `label` 是 Storybook 内的布局小工具。

### TooltipProps

`ui.widgets.Tooltip`

[src/ui/components/tooltip/mod.zig:23](https://github.com/version-next/zenit/blob/HEAD/src/ui/components/tooltip/mod.zig#L23)

```zig
fn Tooltip(props: TooltipProps) TooltipBuilder
```

| 字段 | 类型 | 默认值 | 说明 |
| --- | --- | --- | --- |
| `text` | `[]const u8` | — | — |
| `position` | `TooltipPosition` `.top` `.top_start` `.top_end` `.bottom` `.bottom_start` `.bottom_end` `.left` `.left_start` `.left_end` `.right` `.right_start` `.right_end` | `.top` | — |
| `offset` | `f32` | `6` | — |
| `open_delay_ms` | `f32` | `200` | hover 后到 tooltip 开始显示的延迟（ms）；期间移开指针则不显示。 |
| `background` | `?Color` | `null` | — |
| `text_color` | `?Color` | `null` | — |
| `font_size` | `f32` | `12` | — |

### TooltipResult

`ui.widgets.Tooltip`

[src/ui/components/tooltip/mod.zig:40](https://github.com/version-next/zenit/blob/HEAD/src/ui/components/tooltip/mod.zig#L40)

| 字段 | 类型 | 默认值 | 说明 |
| --- | --- | --- | --- |
| `wrapper` | `*Node` | — | — |
| `trigger` | `*Node` | — | — |
| `content` | `*Node` | — | — |