Rechart Legend 在 Mobile 中屏蔽图表

Question

有什么方法可以防止 Recharts 中的 Legend 在 Mobile 中隐藏图表？请看下图

<ResponsiveContainer width='100%' aspect={5.0 / 3.0}>
    <LineChart data={dataPoints} margin={{ top: 5, right: 10, left: 10, bottom: 5 }}>
        <XAxis dataKey="Index" domain={['auto', 'auto']} label={xlabel} />
        <YAxis
            domain={['auto', 'auto']}
            tickFormatter={formatTick}
            label={{ value: ylabel, angle: -90, position: 'left' }}
        />
        <Tooltip />
        <Legend iconType="plainline" />
        <CartesianGrid stroke="#eee" strokeDasharray="5 5" />
        {Object.keys(linesSettings).map((line, index) => {
            return <Line
                key={index}
                dataKey={line}
                stroke={linesSettings[line].color}
                dot={false}
                strokeWidth={linesSettings[line].width}
            />
        })}
    </LineChart>
</ResponsiveContainer>

Answer 1

您可以根据屏幕尺寸有条件地 display/hide 图例。基本上，在 useEffect 内附加一个 resize 事件，并在 resize.

上维护和更新布尔状态 showLegend

Working demo here

代码段

import React, { useState, useEffect } from "react";
import "./styles.css";
import {
  LineChart,
  Line,
  XAxis,
  YAxis,
  CartesianGrid,
  Tooltip,
  Legend
} from "recharts";
const data = [
  { name: "Page A", uv: 4000, pv: 2400, amt: 2400 },
  { name: "Page B", uv: 3000, pv: 1398, amt: 2210 },
  { name: "Page C", uv: 2000, pv: 9800, amt: 2290 },
  { name: "Page D", uv: 2780, pv: 3908, amt: 2000 },
  { name: "Page E", uv: 1890, pv: 4800, amt: 2181 },
  { name: "Page F", uv: 2390, pv: 3800, amt: 2500 },
  { name: "Page G", uv: 3490, pv: 4300, amt: 2100 }
];
export default function App() {
  const [showLegend, setShowLegend] = useState(true);

  useEffect(() => {
    function handleResize() {
      if (window.innerWidth < 800 && showLegend) {
        setShowLegend(false);
      } else if (window.innerWidth >= 800 && showLegend === false) {
        setShowLegend(true);
      }
    }
    window.addEventListener("resize", handleResize);
    return () => window.removeEventListener("resize", handleResize);
  }, [showLegend]);
  console.log(showLegend);
  return (
    <div className="App">
      <h1>Hello CodeSandbox</h1>
      <LineChart
        width={600}
        height={300}
        data={data}
        margin={{ top: 5, right: 30, left: 20, bottom: 5 }}
      >
        <XAxis dataKey="name" />
        <YAxis />
        <CartesianGrid strokeDasharray="3 3" />
        <Tooltip />
        {showLegend && <Legend />}
        <Line
          type="monotone"
          dataKey="pv"
          stroke="#8884d8"
          activeDot={{ r: 8 }}
        />
        <Line type="monotone" dataKey="uv" stroke="#82ca9d" />
      </LineChart>
    </div>
  );
}

Rechart Legend 在 Mobile 中屏蔽图表

Rechart Legend masking the chart in Mobile

reactjs

recharts