feat: add useStickyFixed hook

config/hooks.ts

@@ -101,6 +101,7 @@ export const menus = [
       'useScroll',
       'useSize',
       'useFocusWithin',
+      'useStickyFixed',
     ],
   },
   {

packages/hooks/src/index.ts

@@ -76,6 +76,7 @@ import useWebSocket from './useWebSocket';
 import useWhyDidYouUpdate from './useWhyDidYouUpdate';
 import useMutationObserver from './useMutationObserver';
 import useTheme from './useTheme';
+import useStickyFixed from './useStickyFixed';
 
 export {
   useRequest,
@@ -158,4 +159,5 @@ export {
   useResetState,
   useMutationObserver,
   useTheme,
+  useStickyFixed,
 };

packages/hooks/src/useStickyFixed/demo/demo1.tsx

@@ -0,0 +1,47 @@
+/**
+ * title: Basic usage
+ * desc: Need to input the sticky positioning element target and the rolling container scrollTarget, ScrollTarget defaults to document
+ *
+ * title.zh-CN: 基础用法
+ * desc.zh-CN: 需要传入粘性定位元素target和滚动容器scrollTarget, scrollTarget默认为document
+ *
+ */
+
+import React, { useRef, useState } from 'react';
+import { useStickyFixed } from 'ahooks';
+
+export default () => {
+  const [topV, setTopV] = useState(0);
+
+  const targetRef = useRef(null);
+  const scrollTargetRef = useRef(null);
+
+  const [isFixed] = useStickyFixed(targetRef, { scrollTarget: scrollTargetRef });
+
+  const fixedStyle = { background: 'pink' };
+
+  return (
+    <>
+      <div style={{ marginBottom: 16 }}>
+        top: <input type="number" step={5} value={topV} onChange={(e) => setTopV(Number(e.target.value))} />
+      </div>
+
+      <div ref={scrollTargetRef} style={{ height: 200, width: 500, border: '1px solid #000', overflowY: 'scroll' }}>
+        <div style={{ height: 100 }}>top content</div>
+        <div
+          ref={targetRef}
+          style={{
+            position: 'sticky',
+            border: '2px dashed pink',
+            top: topV,
+            ...(isFixed && fixedStyle),
+          }}>
+          sticky dom
+        </div>
+        <div style={{ height: 200, marginTop: 50 }}>bottom content</div>
+      </div>
+
+      <div style={{ marginTop: 16 }}> isFixed :{`${isFixed}`}</div>
+    </>
+  );
+};

packages/hooks/src/useStickyFixed/demo/demo2.tsx

@@ -0,0 +1,46 @@
+/**
+ * title: Pass in DOM element
+ * desc: Pass in a function that returns the DOM element.
+ *
+ * title.zh-CN: 传入 DOM 元素
+ * desc.zh-CN: 传入 function 并返回一个 dom 元素。
+ *
+ */
+
+import React, { useState } from 'react';
+import { useStickyFixed } from 'ahooks';
+
+export default () => {
+  const [topV, setTopV] = useState(0);
+
+  const [isFixed] = useStickyFixed(() => document.getElementById('target'), {
+    scrollTarget: () => document.getElementById('scrollTarget'),
+  });
+
+  const fixedStyle = { background: 'pink' };
+
+  return (
+    <>
+      <div style={{ marginBottom: 16 }}>
+        top: <input type="number" step={5} value={topV} onChange={(e) => setTopV(Number(e.target.value))} />
+      </div>
+
+      <div id="scrollTarget" style={{ height: 200, width: 500, border: '1px solid #000', overflowY: 'scroll' }}>
+        <div style={{ height: 100 }}>top content</div>
+        <div
+          id="target"
+          style={{
+            position: 'sticky',
+            border: '2px dashed pink',
+            top: topV,
+            ...(isFixed && fixedStyle),
+          }}>
+          sticky dom
+        </div>
+        <div style={{ height: 200, marginTop: 50 }}>bottom content</div>
+      </div>
+
+      <div style={{ marginTop: 16 }}> isFixed :{`${isFixed}`}</div>
+    </>
+  );
+};

packages/hooks/src/useStickyFixed/index.en-US.md

@@ -0,0 +1,47 @@
+---
+nav:
+  path: /hooks
+---
+
+# useStickyFixed
+
+Observe whether the element of 'position: sticky' is in a fixed suction state
+
+## Examples
+
+### Basic usage
+
+<code src="./demo/demo1.tsx" />
+
+### Pass in DOM element
+
+<code src="./demo/demo2.tsx" />
+
+## API
+
+```typescript
+const [isFixed] = useStickyFixed(targetRef, { scrollTarget });
+```
+
+### Params
+
+| Property | Description                              | Type                                                        | Default |
+| -------- | ---------------------------------------- | ----------------------------------------------------------- | ------- |
+| target   | `position: sticky` 's Dom element or ref | `() => Element` \| `Element` \| `MutableRefObject<Element>` | -       |
+| options  | More config                              | `Options`                                                   | -       |
+
+### Options
+
+| Property      | Description                                         | Type                                                        | Default |
+| ------------- | --------------------------------------------------- | ----------------------------------------------------------- | ------- |
+| scrollTarget  | The element or ref of the DOM in the scrolling area | `() => Element` \| `Element` \| `MutableRefObject<Element>` | document|
+
+
+### Result
+
+| Property      | Description                                            | Type      |
+| ------------- | ------------------------------------------------------ | --------- |
+|  isFixed      | Is the `position: sticky` 's Dom  in the 'fixed' state | `boolean` |
+
+
+

packages/hooks/src/useStickyFixed/index.ts

@@ -0,0 +1,48 @@
+import { useRef } from 'react';
+import { getTargetElement, type BasicTarget } from '../utils/domTarget';
+import useEffectWithTarget from '../utils/useEffectWithTarget';
+import useRafState from '../useRafState';
+
+function useStickyFixed(
+  target: BasicTarget<Element>,
+  options?: {
+    scrollTarget?: BasicTarget<Element | Document>;
+  },
+): [boolean] {
+  const { scrollTarget } = options || {};
+
+  const [state, setState] = useRafState<boolean>(false);
+  const lastTopRef = useRef(0);
+
+  useEffectWithTarget(
+    () => {
+      const scrollElement = getTargetElement(scrollTarget, document);
+      if (!scrollElement) {
+        return;
+      }
+
+      const stickyElement = getTargetElement(target);
+      if (!stickyElement) {
+        return;
+      }
+
+      const handleScroll = () => {
+        const rect = stickyElement.getBoundingClientRect();
+        const currentTop = rect.top;
+        const lastTop = lastTopRef.current;
+        setState(currentTop === lastTop);
+        lastTopRef.current = currentTop;
+      };
+
+      scrollElement.addEventListener('scroll', handleScroll);
+      return () => {
+        scrollElement.removeEventListener('scroll', handleScroll);
+      };
+    },
+    [],
+    target,
+  );
+
+  return [state];
+}
+export default useStickyFixed;

packages/hooks/src/useStickyFixed/index.zh-CN.md

@@ -0,0 +1,43 @@
+---
+nav:
+  path: /hooks
+---
+
+# useStickyFixed
+
+观察粘性定位（`position: sticky`）的元素，是否处于吸顶固定状态
+
+## 代码演示
+
+### 基础用法
+
+<code src="./demo/demo1.tsx" />
+
+### 传入 DOM 元素
+
+<code src="./demo/demo2.tsx" />
+
+## API
+
+```typescript
+const [isFixed] = useStickyFixed(targetRef, { scrollTarget });
+```
+
+### Params
+
+| 参数    | 说明                             | 类型                                                       | 默认值 |
+| ------- | -------------------------------- | ---------------------------------------------------------- | ------ |
+| target  | 粘性定位的 DOM 节点或者 Ref 对象 | `Element` \|`() => Element` \| `MutableRefObject<Element>` | -      |
+| options | 额外的配置项                     | `Options`                                                  | -      |
+
+### Options
+
+| 参数         | 说明                             | 类型                                                                     | 默认值   |
+| ------------ | -------------------------------- | ------------------------------------------------------------------------ | -------- |
+| scrollTarget | 滚动区域的 DOM 节点或者 Ref 对象 | `Element` \| `Document` \|`() => Element` \| `MutableRefObject<Element>` | document |
+
+### Result
+
+| 参数    | 说明                              | 类型      |
+| ------- | --------------------------------- | --------- |
+| isFixed | 粘性定位元素是否处于 `fixed` 状态 | `boolean` |