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app/pages/goods_details/index003.vue

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+<template>
+<view>
+	<view v-if="canvasStatus">
+		<view class="mask"></view>
+		<image :src='imagePath' class="canvas"></image>
+	</view>
+	<view  v-else>
+		<canvas style="width:750rpx;height:1190rpx;position: fixed;z-index: -5;" canvas-id="firstCanvas"></canvas>
+		<canvas style="position:fixed;z-index: -5;opacity: 0;" canvas-id="qrcode" :style="{width: `${qrcodeSize}px`, height: `${qrcodeSize}px`}"/>
+	</view>
+	<div @click='clickgg'>点击</div>
+</view>
+</template>
+ 
+<script>
+	import uQRCode from '@/js_sdk/Sansnn-uQRCode/uqrcode.js'
+	import {
+		HTTP_REQUEST_URL
+	 } from '@/config/app.js';
+export default {
+	data(){
+		return{
+			imagePath:'',
+			canvasStatus:false,
+			
+			qrcodeText: HTTP_REQUEST_URL,
+			qrcodeSize: 129,
+			PromotionCode:''
+		}
+	},
+    onReady: function (e) {
+		this.make();
+    },
+    methods: {
+		// 生成二维码；
+		make() {
+			let that = this;
+			uQRCode.make({
+				canvasId: 'qrcode',
+				text: this.qrcodeText,
+				size: this.qrcodeSize,
+				margin: 10,
+				success: res => {
+					that.PromotionCode = res;
+				},
+				complete: () => {
+				},
+				fail:res=>{
+					that.$util.Tips({
+						title: '海报二维码生成失败！'
+					});
+				}
+			})
+		},
+		clickgg(){
+			let that = this;
+			// ../../static/images/barg002.png
+			let arrImages = ['../../static/images/posterbackgd.png','../../static/images/explosion.png',that.PromotionCode];
+			let storeName = '1十大歌手大好时光的电视广上世纪法国设计风格加工费设计规范技术规范设计规范手机话费csdsdsdsd9';
+			let price = '20';
+			that.$util.PosterCanvas(arrImages, storeName, price, function(tempFilePath) {
+				console.log('klklkl');
+				that.imagePath = tempFilePath;
+				that.canvasStatus = true;
+			});
+		}
+    }
+}
+</script>
+<style>
+	.canvas{
+		position: fixed;
+		width: 512rpx;
+		height: 864rpx;
+		top:50%;
+		left:50%;
+		margin-left: -256rpx;
+		margin-top: -432rpx;
+		z-index: 999;
+	}
+</style>