读取网络图片，并且解析，然后写到工作表中

读取远程图片并插入文档.EXCEL.yaml

name: 读取远程图片并插入文档
description: 读取网络图片，并且解析，然后写到工作表中
host: EXCEL
api_set: {}
script:
  content: |
    $("#run").click(() => tryCatch(run));

    async function run() {
      await Excel.run(async (context) => {
        const sheet = context.workbook.worksheets.getActiveWorksheet();

        const url = "https://img2.looper.com/img/gallery/things-only-adults-notice-in-kung-fu-panda/l-intro-1600295926.jpg";

        const buffer = await fetch(url).then((x) => x.arrayBuffer());
        const picture = sheet.shapes.addImage(convertToBase64(buffer));
        picture.top = 10;
        picture.left = 10;
        picture.width = 300;
        picture.height = 200;

        await context.sync();
      });
    }

    /** Default helper for invoking an action and handling errors. */
    async function tryCatch(callback) {
      try {
        await callback();
      } catch (error) {
        // Note: In a production add-in, you'd want to notify the user through your add-in's UI.
        console.error(error);
      }
    }

    function convertToBase64(input: ArrayBuffer) {
      const uInt8Array = new Uint8Array(input);
      const count = uInt8Array.length;
      // Allocate the necessary space up front.
      const charCodeArray = new Array(count) as string[];
      // Convert every entry in the array to a character.
      for (let i = count; i >= 0; i--) {
        charCodeArray[i] = String.fromCharCode(uInt8Array[i]);
      }
      // Convert the characters to base64.
      const base64 = btoa(charCodeArray.join(""));
      return base64;
    }
  language: typescript
template:
  content: |
    <button id="run" class="ms-Button">
        <span class="ms-Button-label">Run</span>
    </button>
  language: html
style:
  content: |-
    section.samples {
        margin-top: 20px;
    }

    section.samples .ms-Button, section.setup .ms-Button {
        display: block;
        margin-bottom: 5px;
        margin-left: 20px;
        min-width: 80px;
    }
  language: css
libraries: |
  https://appsforoffice.microsoft.com/lib/1/hosted/office.js
  @types/office-js

  office-ui-fabric-js@1.4.0/dist/css/fabric.min.css
  office-ui-fabric-js@1.4.0/dist/css/fabric.components.min.css

  core-js@2.4.1/client/core.min.js
  @types/core-js

  jquery@3.1.1
  @types/jquery@3.3.1