image_scale_drag v0.1.2

image_scale_drag

支持图片放大、缩小、拖拽、选点画线

参数

setPoints: (e: x:number,y:number) => void;

设置点数据

url: string;

设置图片

testZoomKey: number;

设置清除key

lintColor?: string;

设置线颜色

lintThick?: number;

设置线宽

circleColor?: string;

设置点颜色

circleRadius?: number;

设置点半径

传入的宽高已经被去做掉，现在根据外层元素自动计算宽高

其他功能后续添加

示例

import React, { memo, useRef, useState } from "react";
import "./index.less";
import { DotExtract } from "image_scale_drag";

import url from "../assets/images/111.jpg";

type IPoint = {
  x: number;
  y: number;
};

const Extracts: React.FC = () => {
  const [points, setPoints] = useState<IPoint[]>([]);
  const [testZoomKey, setTestZoomKey] = useState(0);
  const resert = () => {
    setTestZoomKey(testZoomKey + 1);
    setPoints([]);
  };

  return (
    <div className="wrapper">
      <DotExtract setPoints={setPoints} url={url} testZoomKey={testZoomKey} />
      <button onClick={resert}>重置</button>
      {points.map((el) => {
        return (
          <span key={el.x}>
            x: {el.x} -- y: {el.y}{" "}
          </span>
        );
      })}
    </div>
  );
};

export default memo(Extracts);