uniapp小程序生成海报学习笔记

<template>
  <view class="home">
    <button @click="setImg()">生成海报</button>
    <canvas :style="{ height: lineBgHeight + 'px;' }" class="gc-canvas"
      canvas-id="firstCanvas"></canvas>
     <input class="ipt" type="text" v-model="txts" placeholder="修改公众号名称">
      <button @click="changeTxt">重新生成</button>
      <button @click="saveImage(myImgs)">保存海报</button>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        txts:'扫码关注-开心就好1314',
        lineBgHeight: "",
        erweimaPath: "",
        erweimaOnePath: "",
        myImgs:'', // 最终生成的图片地址
      }
    },
    onShow() {
      this.init()
    },
    methods: {
      //1. 拿到二维码图片地址 用uni.getIm