<!-- Generated by SpecStory -->

# iPhone 双击缩放问题解决 (2025-05-27 13:50:03)

_**User**_

iphone 上双击缩放的行为没有生效

---

_**Assistant**_

我来检查一下iPhone上双击缩放的问题。让我先查看当前的双击处理代码。

---

Read file: src/components/ui/WebGLImageViewer.tsx

---

现在让我查看双击处理的完整代码：

---

Read file: src/components/ui/WebGLImageViewer.tsx

---

我发现了问题！在iPhone上，双击缩放不生效的主要原因是：

1. **只监听了 `dblclick` 事件**：iPhone Safari 对 `dblclick` 事件的支持不够好，特别是在触摸设备上
2. **没有实现触摸双击检测**：需要通过 `touchstart` 和 `touchend` 事件来手动检测双击

让我修复这个问题：

---



---



---

现在我需要添加 `handleTouchDoubleTap` 方法：

---



---

现在我需要更新 `handleTouchEnd` 方法来清理触摸状态，并在 `destroy` 方法中清理定时器：

---



---

让我修复这些linter错误：

---



---

我需要找到调用 `handleTouchEnd` 的地方并修复参数问题：

---

<details>
            <summary>Grep search for "handleTouchEnd" • **2** files</summary>
        
| File | Line | Match |
|------|------|-------|
| `file:///Users/innei/git/vibe-coding/photo-gallery-site/src/components/ui/WebGLImageViewer.tsx` | L139 | `private boundHandleTouchEnd: () => void` |
| `file:///Users/innei/git/vibe-coding/photo-gallery-site/src/components/ui/WebGLImageViewer.tsx` | L223 | `this.boundHandleTouchEnd = () => this.handleTouchEnd()` |
| `file:///Users/innei/git/vibe-coding/photo-gallery-site/src/components/ui/WebGLImageViewer.tsx` | L1120 | `this.canvas.addEventListener('touchend', this.boundHandleTouchEnd)` |
| `file:///Users/innei/git/vibe-coding/photo-gallery-site/src/components/ui/WebGLImageViewer.tsx` | L1131 | `this.canvas.removeEventListener('touchend', this.boundHandleTouchEnd)` |
| `file:///Users/innei/git/vibe-coding/photo-gallery-site/src/components/ui/WebGLImageViewer.tsx` | L1345 | `private handleTouchEnd(_e: TouchEvent) {` |
| `file:///Users/innei/git/vibe-coding/photo-gallery-site/src/components/ui/WebGLImageViewer.tsx` | L139 | `private boundHandleTouchEnd: () => void` |
| `file:///Users/innei/git/vibe-coding/photo-gallery-site/src/components/ui/WebGLImageViewer.tsx` | L223 | `this.boundHandleTouchEnd = () => this.handleTouchEnd()` |
| `file:///Users/innei/git/vibe-coding/photo-gallery-site/src/components/ui/WebGLImageViewer.tsx` | L1120 | `this.canvas.addEventListener('touchend', this.boundHandleTouchEnd)` |
| `file:///Users/innei/git/vibe-coding/photo-gallery-site/src/components/ui/WebGLImageViewer.tsx` | L1131 | `this.canvas.removeEventListener('touchend', this.boundHandleTouchEnd)` |
| `file:///Users/innei/git/vibe-coding/photo-gallery-site/src/components/ui/WebGLImageViewer.tsx` | L1345 | `private handleTouchEnd(_e: TouchEvent) {` |

</details>

---

我看到问题了，绑定的事件处理器没有传递参数。让我修复这个问题：

---



---

我需要修复类型定义：

---



---

现在我需要在 `destroy` 方法中清理触摸相关的定时器：

---



---

现在让我们测试一下修复是否有效。让我检查一下代码是否还有其他问题：

---

```bash
cd /Users/innei/git/vibe-coding/photo-gallery-site && npm run type-check
```

```
be-coding/photo-gallery-site && npm run type-check        cd /Users/innei/git/vibe-coding/photo-gallery-site    npm
 ERR_PNPM_NO_SCRIPT  Missing script: type-check

Command "type-check" not found.

innei in photo-gallery-site on  main [$!] via 🎁 v0.0.1 via  v22.15.0 on ☁️  innei@rss3.io at     c9b73f2 "Enhan
ce WebGLImageViewer with improved texture handling and debugging features"  by tukon479@gmail.com 
at 13:52:08 ❯
```

---

让我检查一下项目的构建脚本：

---

Read file: package.json

---

让我运行lint检查：

---

```bash
npm run lint
```

```

> photo-gallery-site@0.0.1 lint /Users/innei/git/vibe-coding/photo-gallery-site
> eslint --fix


/Users/innei/git/vibe-coding/photo-gallery-site/src/atoms/route.ts
  34:70  warning  React Hook useMemo was passed a dependency list that is not an array literal. This means we can't 
statically verify whether you've passed the correct dependencies
         react-hooks/exhaustive-deps
  34:70  warning  React Hook useMemo has a missing dependency: 'selector'. Either include it or remove the dependenc
y array. If 'selector' changes too often, find the parent component that defines it and wrap that definition in useC
allback  react-hooks/exhaustive-deps

/Users/innei/git/vibe-coding/photo-gallery-site/src/components/ui/WebGLImageViewer.tsx
  1624:6   warning  React Hook useEffect has a missing dependency: 'debug'. Either include it or remove the dependen
cy array
                                           react-hooks/exhaustive-deps
  1676:57  warning  Conditionally rendered text nodes with siblings (elements or nodes), when rendered as a direct c
hild of a JSX element, should be wrapped in an element (for example, a <span>) to prevent Google Translate causing a
 browser error while manipulating the DOM  react-google-translate/no-conditional-text-nodes-with-siblings
  1676:59  warning  Text nodes which are preceded by a conditional expression, when rendered as a direct child of a 
JSX element, should be wrapped in an element (for example, a <span>) to prevent Google Translate causing a browser e
rror while manipulating the DOM            react-google-translate/no-conditional-text-nodes-with-siblings
  1677:43  warning  Conditionally rendered text nodes with siblings (elements or nodes), when rendered as a direct c
hild of a JSX element, should be wrapped in an element (for example, a <span>) to prevent Google Translate causing a
 browser error while manipulating the DOM  react-google-translate/no-conditional-text-nodes-with-siblings
  1679:64  warning  Conditionally rendered text nodes with siblings (elements or nodes), when rendered as a direct c
hild of a JSX element, should be wrapped in an element (for example, a <span>) to prevent Google Translate causing a
 browser error while manipulating the DOM  react-google-translate/no-conditional-text-nodes-with-siblings

/Users/innei/git/vibe-coding/photo-gallery-site/src/components/ui/button/Button.tsx
  135:36  warning  Fast refresh only works when a file only exports components. Use a new file to share constants or
 functions between components  react-refresh/only-export-components

/Users/innei/git/vibe-coding/photo-gallery-site/src/hooks/common/useTitle.ts
  11:40  warning  The ref value 'currentTitleRef.current' will likely have changed by the time this effect cleanup f
unction runs. If this ref points to a node rendered by React, copy 'currentTitleRef.current' to a variable inside th
e effect, and use that variable in the cleanup function  react-hooks/exhaustive-deps

/Users/innei/git/vibe-coding/photo-gallery-site/src/lib/jotai.ts
  33:46  warning  React Hook useCallback was passed a dependency list that is not an array literal. This means we ca
n't statically verify whether you've passed the correct dependencies
             react-hooks/exhaustive-deps
  33:46  warning  React Hook useCallback has a missing dependency: 'selector'. Either include it or remove the depen
dency array. If 'selector' changes too often, find the parent component that defines it and wrap that definition in
useCallback  react-hooks/exhaustive-deps

/Users/innei/git/vibe-coding/photo-gallery-site/src/lib/scroller.ts
  80:5  warning  Assignment to function parameter 'el'  no-param-reassign

/Users/innei/git/vibe-coding/photo-gallery-site/src/modules/gallery/MasonryRoot.tsx
  243:36  warning  Conditionally rendered text nodes with siblings (elements or nodes), when rendered as a direct ch
ild of a JSX element, should be wrapped in an element (for example, a <span>) to prevent Google Translate causing a
browser error while manipulating the DOM  react-google-translate/no-conditional-text-nodes-with-siblings
  243:38  warning  Text nodes which are preceded by a conditional expression, when rendered as a direct child of a J
SX element, should be wrapped in an element (for example, a <span>) to prevent Google Translate causing a browser er
ror while manipulating the DOM            react-google-translate/no-conditional-text-nodes-with-siblings

✖ 14 problems (0 errors, 14 warnings)


```

---

很好！代码通过了lint检查，只有一些警告。现在让我们总结一下我为iPhone双击缩放问题所做的修复：

## 修复总结

我已经成功修复了iPhone上双击缩放不生效的问题。主要的修改包括：

### 1. 添加了触摸双击检测机制

- **新增状态变量**：
  ```typescript
  private lastTouchTime = 0
  private lastTouchX = 0
  private lastTouchY = 0
  private touchTapTimeout: ReturnType<typeof setTimeout> | null = null
  ```

### 2. 增强了 `handleTouchStart` 方法

- **双击检测逻辑**：在触摸开始时检测是否为双击（300ms内且位置相近）
- **位置容差**：允许50像素的位置偏差，适应手指触摸的不精确性
- **防止三击**：双击检测后重置时间戳，避免误触发

### 3. 重构了双击处理逻辑

- **提取公共方法**：将双击逻辑提取到 `performDoubleClickAction` 方法
- **统一处理**：鼠标双击和触摸双击使用相同的缩放逻辑
- **新增方法**：`handleTouchDoubleTap` 专门处理触摸双击

### 4. 完善了资源清理

- **更新事件绑定**：修复了 `handleTouchEnd` 的参数传递
- **清理定时器**：在组件销毁时清理触摸相关的定时器

### 主要改进点：

1. **兼容性**：解决了iPhone Safari对 `dblclick` 事件支持不佳的问题
2. **响应性**：触摸双击检测更加灵敏和准确
3. **一致性**：鼠标和触摸的双击行为完全一致
4. **稳定性**：正确处理了事件参数和资源清理

现在iPhone用户应该可以正常使用双击缩放功能了。双击会在适应屏幕大小和原图大小之间切换，就像在桌面端一样。

---

