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@x.render/render-scrollview

v1.10.0

Published

ScrollView is a component that wraps scrolling operations. A certain height is needed to ensure the normal display of ScrollView.

Downloads

10

Readme

@x.render/render-scrollview

英文文档

描述

ScrollView 是一个包装了滚动操作的组件。需要一个确定的高度来保证 ScrollView 的正常展现。

安装

$ npm install @x.render/render-scrollview --save

属性

| 属性 | 类型 | 默认值 | 必填 | 描述 | | ------------------------------ | ---------- | ---------- | -------- | ----------------------------------------------------------------- | | scrollEventThrottle | number | 50 | false | 这个属性控制在滚动过程中,scroll 事件被调用的频率,用于滚动的节流 | | horizontal | boolean | - | false | 设置为横向滚动 | | scrollTop | number | 0 | false | 竖向滚动距离,优先级高于scrollTo方法 | | scrollLeft | number | 0 | false | 横向滚动距离,优先级高于scrollTo方法 | | showsHorizontalScrollIndicator | boolean | true | false | 是否允许出现水平滚动条 | | showsVerticalScrollIndicator | boolean | true | false | 是否允许出现垂直滚动条 | | onEndReached | function | - | false | 滚动区域还剩onEndReachedThreshold的长度时触发 | | onScroll | function | - | false | 滚动时触发的事件,返回当前滚动的水平垂直距离 | | onTouchMove | function | - | false | touchMove 触发的事件,返回触摸点数据(touches、changedTouches) | | onTouchEnd | function | - | false | touchEnd 触发的事件,返回触摸点数据(touches、changedTouches) | | disableScroll | boolean | - | false | 是否禁止滚动 |

方法

scrollTo({x: number,y: number, animated?: boolean, duration?: number})

参数

参数为 object,包含以下属性

| 属性 | 类型 | 默认值 | 必填 | 描述 | | -------- | --------- | ---------- | -------- | --------------------------------------------------------------------------------- | | x | number | - | 否 | 横向的偏移量 | | y | number | - | 否 | 纵向的偏移量 | | animated | boolean | true | 否 | 在设置滚动条位置时使用动画过渡 | | duration | number | 400 | 否 | 当 animated 设置为 true 时,可以设置 duration 来控制动画的执行时间,单位 ms |

scrollIntoView({id: string, animated?: boolean, duration?: number, offsetX?: number, offsetY?: number})

参数

参数为 object,包含以下属性

| 属性 | 类型 | 默认值 | 必填 | 描述 | | -------- | --------- | ---------- | -------- | --------------------------------------------------------------------------------- | | id | string | - | 是 | 需要滚动到的元素 id | | animated | boolean | true | 否 | 在设置滚动条位置时使用动画过渡 | | duration | number | 400 | 否 | 当 animated 设置为 true 时,可以设置 duration 来控制动画的执行时间,单位 ms | | offsetX | number | - | 否 | 滚动的额外 X 偏移 | | offsetY | number | - | 否 | 滚动的额外 Y 偏移 |

示例

import { useRef } from "react";
import ScrollView from "@x.render/render-scrollview";
import { ScrollViewRefObject } from "@x.render/render-scrollview/build/lib/types";
import styles from "./index.module.css";
import logopng from "./logo.jpeg";

const App = () => {
  const scrollViewRef = useRef < ScrollViewRefObject > null;
  const handleViewScroll = () => {
    console.log(scrollViewRef.current.scrollTo({ y: 50 }));
  };
  const handleResetScroll = () => {
    scrollViewRef.current._nativeNode.scrollTop = 0;
  };
  const handleOnScroll = (e) => {
    console.log(e);
  };
  const handleOnEndReached = () => {
    console.log("触底了");
  };
  const handlePositionScroll = () => {
    scrollViewRef.current.scrollIntoView({ id: "password" });
  };
  return (
    <>
      <div>
        <span onClick={handleViewScroll}>查看滚动</span>
        <span onClick={handleResetScroll}>恢复滚动</span>
        <span onClick={handlePositionScroll}>指定滚动到的元素</span>
      </div>
      <ScrollView
        scrollEventThrottle={200}
        onScroll={handleOnScroll}
        onEndReached={handleOnEndReached}
        onEndReachedThreshold={50}
        ref={scrollViewRef}
        style={{
          height: "50vh",
        }}
      >
        <div className={styles.container}>
          <img className={styles.image} src={logopng} />
          <p className={styles.text}>
            <span className={styles.letter}>Powered</span>
            <span className={styles.letter}>&nbsp;</span>
            <span className={styles.letter}>by</span>
            <span className={styles.letter}>&nbsp;</span>
            <span className={styles.letter}>render</span>
            <span className={styles.letter}>&nbsp;</span>
          </p>
        </div>
      </ScrollView>
    </>
  );
};
export default App;