chore: add reverse css var

[zombieJ]

Summary by CodeRabbit

• 新增功能
  • 引入了一个可选的反向层级配置，提供更灵活的固定单元格样式设置。
  • 优化了固定列的视觉叠层顺序，使得在定位于开头或结尾的单元格中展现更合适的层叠效果。

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[coderabbitai]

Walkthrough

此次更改在 Cell 组件中新增了可选属性 zIndexReverse，用于实现反向 z-index 调整，同时在辅助计算固定单元格信息的工具函数中加入了 zIndex 与 zIndexReverse 两个可选属性，并调整了相关逻辑计算与返回结果。

Changes

文件路径	修改摘要
src/Cell/index.tsx	在 CellProps 接口中新增 zIndexReverse；在 Cell 函数中解构该属性并设置 CSS 变量 --z-offset-reverse。
src/utils/fixUtil.ts	在 FixedInfo 接口中新增 zIndex 与 zIndexReverse 属性；在 getCellFixedInfo 函数中计算并返回这两个属性。

Sequence Diagram(s)

sequenceDiagram
    participant Cell
    participant Calculator as getCellFixedInfo
    participant CSS
    Cell->>Calculator: 请求固定单元格信息
    Calculator-->>Cell: 返回 { zIndex, zIndexReverse }
    Cell->>CSS: 设置 CSS 变量 --z-offset-reverse 等样式属性

Loading

Possibly related PRs

• fix: stack case #1247: 与本 PR 存在直接联系，均引入了 zIndexReverse 属性，并对 CellProps 和 FixedInfo 接口进行了相应修改。

Poem

嗨，我是一只小兔子，跳跃在代码间，
zIndexReverse 来让层次变得更奇幻。
固定列的新逻辑，像花儿般盛放，
每个小改动，都闪耀着可爱光芒。
代码世界里的魔法，让我们一起欢畅！
🐇💻✨

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src/Cell/index.tsx

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ESLint: 8.57.1

ESLint couldn't find the config "prettier" to extend from. Please check that the name of the config is correct.

The config "prettier" was referenced from the config file in "/.eslintrc.js".

If you still have problems, please stop by https://eslint.org/chat/help to chat with the team.

src/utils/fixUtil.ts

Oops! Something went wrong! :(

ESLint: 8.57.1

ESLint couldn't find the config "prettier" to extend from. Please check that the name of the config is correct.

The config "prettier" was referenced from the config file in "/.eslintrc.js".

If you still have problems, please stop by https://eslint.org/chat/help to chat with the team.

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📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 2480d88 and 51d67ec.

⛔ Files ignored due to path filters (4)

• tests/__snapshots__/ExpandRow.spec.jsx.snap is excluded by !**/*.snap
• tests/__snapshots__/FixedColumn.spec.tsx.snap is excluded by !**/*.snap
• tests/__snapshots__/Summary.spec.tsx.snap is excluded by !**/*.snap
• tests/__snapshots__/Table.spec.jsx.snap is excluded by !**/*.snap

📒 Files selected for processing (2)

• src/Cell/index.tsx (3 hunks)
• src/utils/fixUtil.ts (3 hunks)

🔇 Additional comments (10)

src/Cell/index.tsx (4)

47-47: 新增了 zIndexReverse 属性，增强了 Z 轴层叠控制能力

此处添加了可选的 zIndexReverse 属性，与现有的 zIndex 属性相互补充，为固定列的 z-index 层叠提供了更灵活的控制方式。

---

116-116: 属性解构中包含了新增的 zIndexReverse 属性

在 Cell 组件属性解构中正确地包含了 zIndexReverse 属性，保持了代码的一致性。

---

169-169: 为 fixStart 元素设置了 CSS 变量 --z-offset-reverse

正确地将 zIndexReverse 属性值应用于固定在起始位置的单元格，设置 CSS 变量 --z-offset-reverse。

---

174-174: 为 fixEnd 元素设置了 CSS 变量 --z-offset-reverse

正确地将 zIndexReverse 属性值应用于固定在末端位置的单元格，设置 CSS 变量 --z-offset-reverse。

src/utils/fixUtil.ts (6)

20-23: 在 FixedInfo 接口中添加了 zIndex 和 zIndexReverse 属性

添加了两个新属性并提供了清晰的注释说明其用途：

• zIndex: 用于设置第一个固定列的 z-index 大于下一个列
• zIndexReverse: 用于设置第一个固定列的 z-index 小于下一个列

这种设计使得层叠顺序控制更加灵活。

---

59-59: 初始化 zIndexReverse 变量

与现有的 zIndex 变量初始化方式保持一致，初始化 zIndexReverse 为 0。

---

64-64: 计算 fixStart 情况下的 zIndexReverse 值

当列固定在开始位置时，将 zIndexReverse 设置为 colStart，这意味着越靠近表格左侧的固定列 z-index 值越小，与原有的 zIndex 计算逻辑形成互补。

---

69-69: 计算 fixEnd 情况下的 zIndexReverse 值

当列固定在结束位置时，将 zIndexReverse 设置为 columns.length * 2 - colEnd，这与 zIndex 的计算逻辑相反，提供了更灵活的 z-index 控制方式。注释中清晰说明了计算目的。

---

100-100: 在返回结果中包含 zIndexReverse 属性

将计算得到的 zIndexReverse 值包含在函数的返回对象中，以便 Cell 组件使用。

---

1-102: 建议: 考虑添加相关 CSS 样式文件的更新

PR 中添加了 CSS 变量 --z-offset-reverse，但没有看到相应的 CSS 样式使用这个变量。建议确认是否需要在相关的样式文件中添加对此变量的使用，以使 zIndexReverse 功能生效。

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.03%. Comparing base (2480d88) to head (51d67ec).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1248   +/-   ##
=======================================
  Coverage   98.03%   98.03%           
=======================================
  Files          76       76           
  Lines        7412     7419    +7     
  Branches     1145     1145           
=======================================
+ Hits         7266     7273    +7     
  Misses        140      140           
  Partials        6        6           

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