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handwrite-js

v0.0.5

Published

一个js手写库,支持Web端、H5端,并提供基础API控制。

Downloads

39

Readme

handwrite-js

一个js手写库,支持Web端、H5端,并提供基础API控制。

功能

  • ✅ 同时支持web端、h5端。
  • ✅ 支持流行前端框架,例如:react、vue等。
  • ✅ 支持修改画笔颜色、粗细。
  • ✅ 支持修改画布背景。
  • ✅ 支持导入、导出签名。

基本使用

In Html.

<script src="https://unpkg.com/handwrite-js/umd/index.js"></script>
<div style="display: inline-block; border: 1px solid #ccc">
    <div id="dom" style="width: 300px; height: 500px"></div>
</div>
<script>
    const { HandWrite } = window.handWriteSdk;
    const handWrite = new HandWrite({
        dom: document.getElementById("dom"),
    });
    // handWrite.unmount(); // 卸载
</script>

In React.

import { HandWrite } from 'handWrite-js'
import { useRef } from "react";

function Page() {
  const handWriteRef = useRef<HandWrite>();
  const domRef = useRef<HTMLDivElement>(null)

  useEffect(() => {
    handWriteRef.current = new HandWrite({
      dom: domRef.current
    });
    return () => {
      handWriteRef.current?.unmount?.();
      handWriteRef.current = undefined;
    }
  }, []);

  return (
    <div style="display: inline-block; border: 1px solid #ccc">
      <div ref="domRef" style="width: 300px; height: 500px"/>
    </div>
  )
}

In Vue.

<script setup>
  import { ref, onMounted, onUnmounted } from "vue";
  import { HandWrite } from "handWrite-js";

  const domRef = ref();
  let handWrite = new HandWrite();

  onMounted(() => {
    handWrite.mount?.(domRef.value);
  });

  onUnmounted(() => {
    handWrite?.unmount?.();
    handWrite = undefined;
  });
</script>

<template>
  <div style="display: inline-block; border: 1px solid #ccc">
    <div ref="domRef" style="width: 300px; height: 500px" />
  </div>
</template>

本地调试

# node16、[email protected]
pnpm i

pnpm dev

API

基础 api:

| 名称 | 描述 | |-------------|--------------------| | mount (dom) | 挂载到dom节点(重复挂载会报错) | | unmount () | 卸载当前实例 | | clear () | 清空画布(重置到上一次设置的背景色) |

扩展 api:

| 名称 | 描述 | |--------------------------|--------| | download (filename) | 下载签名到本地 | | getBase64 () | 获取当前签名的base64 | | setBase64 (base64) | 设置base64到签名 | | setImgUrl (url) | 设置url的图片为签名 | | setBackground (color) | 修改画布背景 | | setPen ({ size, color }) | 设置画笔属性(大小、颜色) |