react 可拖拽进度条的实现
效果
/* * @Author: hongbin * @Date: 2022-04-16 13:26:39 * @LastEditors: hongbin * @LastEditTime: 2022-04-16 21:00:02 * @Description:拖动进度条组件 */ import { FC, ReactElement, useRef } from "react"; import styled from "styled-components"; import { flexCenter } from "../../styled"; interface IProps { /** * 0-1 */ value: number; /** * callback 0-1 */ onChange: (percent: number) => void; } const ProgressBar: FC<IProps> = ({ value, onChange }): ReactElement => { const totalRef = useRef<HTMLDivElement>(null); return ( <Container> <div ref={totalRef}> <div style={{ width: value * 100 + "%" }} /> </div> <div onMouseDown={(e) => { const { offsetWidth } = totalRef.current!; const stop = e.currentTarget; const { offsetLeft } = stop; stop.style["left"] = offsetLeft + "px"; const { pageX: start } = e; const move = (e: MouseEvent) => { let val = offsetLeft + e.pageX - start; if (val <= 0) val = 0; if (val >= offsetWidth) val = offsetWidth; // stop.style["left"] = val + "px"; onChange(val / offsetWidth); }; const clear = () => { document.removeEventListener("mousemove", move); document.removeEventListener("mouseup", clear); document.removeEventListener("mouseleave", clear); }; document.addEventListener("mousemove", move); document.addEventListener("mouseup", clear); document.addEventListener("mouseleave", clear); }} style={{ left: value * 100 + "%" }} ></div> </Container> ); }; export default ProgressBar; const Container = styled.div` position: relative; width: 10vw; height: 1vw; ${flexCenter}; & > :first-child { width: inherit; height: 0.5vw; background-color: var(--tint-color); border-radius: 10vw; overflow: hidden; display: flex; align-items: center; padding: 0.05vw; div { width: 5vw; height: 0.4vw; background-color: var(--deep-color); border-radius: 0.4vw; } } & > :last-child { width: 1vw; height: 1vw; background-color: var(--deep-color); border-radius: 1vw; position: absolute; cursor: pointer; transform: translateX(-0.5vw); svg { width: 0.9vw; } } `;
export const flexCenter = css` display: flex; justify-content: center; align-items: center; `;
:root { --deep-color: #978961; --tint-color: #efe5d4; }
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