vue2使用wangeditor实现手写输入功能

import $ from "jquery";
import { mathIcon } from "../assets/icons/svg-icon.ts";
 
class MyScriptMathMenu {
  constructor() {
    this.title = "手写公式";
    this.iconSvg = mathIcon;
    this.tag = "button";
    this.showModal = true;
    this.modalWidth = 900;
    this.modalHeight = 500;
  }
 
  // 菜单是否需要激活（如选中加粗文本，“加粗”菜单会激活），用不到则返回 false
  isActive(editor) {
    return false;
  }
 
  // 获取菜单执行时的 value ，用不到则返回空 字符串或 false
  getValue(editor) {
    return "";
  }
 
  // 菜单是否需要禁用（如选中 H1 ，“引用”菜单被禁用），用不到则返回 false
  isDisabled(editor) {
    return false;
  }
  // 点击菜单时触发的函数
  exec(editor, value) {
    // Modal menu ，这个函数不用写，空着即可
  }
 
  // 弹出框 modal 的定位：1. 返回某一个 SlateNode； 2. 返回 null （根据当前选区自动定位）
  getModalPositionNode(editor) {
    return null; // modal 依据选区定位
  }
 
  // 定义 modal 内部的 DOM Element
  getModalContentElem(editor) {
    // panel 中需要用到的id
    const inputIFrameId = "kityformula_" + Math.ceil(Math.random() * 10);
    const btnOkId = "kityformula-btn" + Math.ceil(Math.random() * 10);
 
    const $content = $(`
    <div>
      <iframe id="${inputIFrameId}" class="iframe" height="400px" width="100%" frameborder="0" scrolling="no" src="/myscriptMath/index.html"></iframe>
    </div>`);
    const $button = $(
      `<button id="${btnOkId}" class="right" style='margin: 5px 0'>
        确认插入
      </button>`
    );
    $content.append($button);
 
    $button.on("click", () => {
      // 执行插入公式
      const node = document.getElementById(inputIFrameId);
      const latex = node.contentWindow.latex;
 
      const formulaNode = {
        type: "paragraph",
        children: [
          {
            type: "formula",
            value: latex,
            children: [
              {
                text: "",
              },
            ],
          },
        ],
      };
      editor.insertNode(formulaNode);
      editor.hidePanelOrModal();
    });
 
    return $content[0]; // 返回 DOM Element 类型
 
    // PS：也可以把 $content 缓存下来，这样不用每次重复创建、重复绑定事件，优化性能
  }
}
const menuConf = {
  key: "myscriptMath", // menu key ，唯一。注册之后，需通过 toolbarKeys 配置到工具栏
  factory() {
    return new MyScriptMathMenu();
  },
};
 
export default menuConf;

import myscriptMath from "@/components/myscriptMath";
import { Boot } from "@wangeditor/editor";
      toolbarConfig: {
        // 插入编辑公式菜单
        insertKeys: {
          index: 0,
          keys: [
            "kityFormula", // “编辑公式”菜单
            "myscriptMath",
          ],
        },
        // excludeKeys: [ /* 隐藏哪些菜单 */ ],
      },
  created() {
    Boot.registerMenu(myscriptMath);
  },

<template>
  <div class="content-box">
    <div class="container" style="width: 1000px; margin: 0 auto">
      <div>
        <button @click="printEditorHtml">获取编辑器html</button>
        <button @click="getEditorText">获取编辑器文本</button>
      </div>
      <div style="border: 1px solid #ccc; margin-top: 10px; text-align: left">
        <!-- 工具栏 -->
        <Toolbar
          style="border-bottom: 1px solid #ccc"
          :editor="editor"
          :defaultConfig="toolbarConfig"
        />
        <!-- 编辑器 -->
        <Editor
          style="height: 500px; overflow-y: hidden"
          :defaultConfig="editorConfig"
          v-model="html"
          @onChange="onChange"
          @onCreated="onCreated"
          @onFocus="handleFocus"
        />
      </div>
      <div style="margin-top: 10px">
        <textarea
          v-model="html"
          readonly
          style="width: 100%; height: 200px; outline: none"
        ></textarea>
      </div>
    </div>
  </div>
</template>
 
<script>
import { Editor, Toolbar } from "@wangeditor/editor-for-vue";
import kityformula from "@/components/kityformula";
import myscriptMath from "@/components/myscriptMath";
import { Boot } from "@wangeditor/editor";
import formulaModule from "@wangeditor/plugin-formula";
export default {
  name: "MyEditor",
  components: { Editor, Toolbar },
  data() {
    return {
      editor: null,
      html: "<p>hello&nbsp;world</p>",
      toolbarConfig: {
        // 插入编辑公式菜单
        insertKeys: {
          index: 0,
          keys: [
            "kityFormula", // “编辑公式”菜单
            "myscriptMath",
          ],
        },
        // excludeKeys: [ /* 隐藏哪些菜单 */ ],
      },
      editorConfig: {
        placeholder: "请输入内容...",
        // autoFocus: false,
 
        // 所有的菜单配置，都要在 MENU_CONF 属性下
        MENU_CONF: {},
      },
    };
  },
  methods: {
    onCreated(editor) {
      console.log("created", editor);
      this.editor = Object.seal(editor); // 【注意】一定要用 Object.seal() 否则会报错
    },
    onChange(editor) {
      console.log("onChange", editor.getHtml()); // onChange 时获取编辑器最新内容
    },
    handleFocus(editor) {
      console.log("focus", editor);
    },
    getEditorText() {
      const editor = this.editor;
      if (editor == null) return;
 
      console.log(editor.getText()); // 执行 editor API
    },
    printEditorHtml() {
      const editor = this.editor;
      if (editor == null) return;
 
      console.log(editor.getHtml()); // 执行 editor API
    },
  },
  created() {
    Boot.registerMenu(kityformula);
    Boot.registerMenu(myscriptMath);
    Boot.registerModule(formulaModule);
  },
  mounted() {
    // 模拟 ajax 请求，异步渲染编辑器
    setTimeout(() => {
      this.html = "<p>Ajax 异步设置内容 HTML</p>";
    }, 1500);
  },
  beforeDestroy() {
    const editor = this.editor;
    if (editor == null) return;
    editor.destroy(); // 组件销毁时，及时销毁 editor ，重要！！！
  },
};
</script>
 
<style src="@wangeditor/editor/dist/css/style.css"></style>