lineage-app/pages/family/postcard/postcard.vue

<template>
	<view class="container">
		<view class="coupon-list">
			<view class="coupon-item" v-for="(item, index) in couponList" :key="index">
				<view class="hidden-box" v-show="item.spread">
					<view style="width: 100%;padding-bottom: 30rpx;" class="qrcode-box">
						<view style="width: 80rpx;height: 80rpx;float: left;border-radius:40rpx;background-color: #E6B728;text-align: center;color: #FFFFFF;">
							<view style="font-size: 32rpx;margin-top: 15rpx;">余</view>
						</view>
						<view style="margin-left: 100rpx;">
							<view class="code-tit">{{ item.familtname }}</view>
							<view class="code-num">家族ID:{{ item.id }}</view>
						</view>
					</view>
					
					<view class="qrcode-box">
						<view class="qrcode">
							<canvas :class="{ 'my-canvas': !item.spread }" :style="{ width: qrcode_w + 'px', height: qrcode_w + 'px' }"
							 :canvas-id="'couponQrcode' + index" :id="'couponQrcode' + index"></canvas>
						</view>
					</view>
					<view class="list-item">
						扫一扫上面二维码,加入家族
					</view>
				</view>
			</view>
		</view>
	</view>
</template>

<script>
	const util = require('@/utils/util.js');
	const qrCode = require('@/libs/weapp-qrcode.js');
	export default {
		data() {
			return {
				show: true,
				couponList: [{
					familtname: '陕西凤翔-余姓',
					id: '0900100200',
					spread: true,
				}],
				qrcode_w: uni.upx2px(240)
			};
		},
		onLoad: function(options) {
			const W = uni.getSystemInfoSync().windowWidth;
			const qrcode_w = uni.upx2px(260);
			this.qrcode_w = qrcode_w;
			// #ifdef APP-PLUS || MP
			setTimeout(() => {
				this.couponQrCode(this.couponList[0].id, 'couponQrcode0');
			}, 60);
			// #endif
		},
		methods: {
			spread: function(index) {
				let couponList = this.couponList;
				if (!couponList[index].spread) {
					setTimeout(() => {
						this.couponQrCode(couponList[index].id, 'couponQrcode' + index);
					}, 60);
				}
				couponList[index].spread = !couponList[index].spread;
				this.couponList = couponList;
			},
			// 二维码生成工具
			couponQrCode(text, canvasId) {
				new qrCode(canvasId, {
					text: text,
					width: this.qrcode_w,
					height: this.qrcode_w,
					colorDark: '#333333',
					colorLight: '#FFFFFF',
					correctLevel: qrCode.CorrectLevel.H
				});
				if (canvasId == 'couponQrcode0') {
					setTimeout(() => {
						if (!this.show) {
							this.show = true;
						}
					}, 0);
				}
			}
		}
	};
</script>

<style>
	/* #ifdef MP-ALIPAY */
	.my-canvas {
		position: fixed;
		left: -200px;
		top: 0;
	}

	/* #endif */

	.container {
		width: 100%;
		padding-bottom: env(safe-area-inset-bottom);
	}

	.header {
		width: 100%;
		padding: 0 30rpx;
		box-sizing: border-box;
		font-size: 24rpx;
		color: #999;
		height: 54rpx;
		line-height: 54rpx;
		background: #fff;
		display: flex;
		align-items: center;
		position: fixed;
		top: 0;
		/* #ifdef H5 */
		top: 44px;
		/* #endif */
		z-index: 999999;
	}

	.coupon-num {
		color: #5677fc;
	}

	.coupon-list {
		width: 100%;
		padding: 54rpx 50rpx;
		box-sizing: border-box;
	}

	.coupon-item {
		margin-top: 20rpx;
		width: 100%;
		box-shadow: 0 8rpx 10rpx -8rpx #eaeef1;
		border-radius: 2rpx;
	}

	.coupon {
		height: 160rpx;
		position: relative;
		display: flex;
		align-items: center;
	}

	.coupon-img {
		width: 100%;
		height: 160rpx;
		position: absolute;
		left: 0;
		top: 0;
		z-index: 0;
	}

	.left-tit-box {
		width: 414rpx;
		padding-left: 75rpx;
		box-sizing: border-box;
		z-index: 10;
	}

	.tit {
		width: 290rpx;
		font-size: 30rpx;
		color: #333;
		line-height: 42rpx;
		overflow: hidden;
		text-overflow: ellipsis;
		display: -webkit-box;
		-webkit-line-clamp: 2;
		-webkit-box-orient: vertical;
	}

	.term {
		width: 228rpx;
		font-size: 24rpx;
		color: #999;
		line-height: 24rpx;
		padding-top: 7rpx;
		white-space: nowrap;
	}

	.right-detail {
		width: 236rpx;
		text-align: center;
		height: 160rpx;
		display: flex;
		align-items: center;
		justify-content: center;
		z-index: 10;
	}

	.detail-txt {
		font-size: 24rpx;
		color: #fff;
		padding-right: 12rpx;
	}

	.arrow {
		width: 16rpx;
		height: 24rpx;
		transition: all 0.15s ease;
	}

	.spread {
		width: 24rpx;
		height: 16rpx;
	}

	.qrcode {
		width: 260rpx;
		height: 260rpx;
		margin: 45rpx auto 43rpx auto;
	}

	.hidden-box {
		padding: 35rpx 40rpx 27rpx 40rpx;
		box-sizing: border-box;
		color: #333;
		border-top: 1rpx solid #eaeef1;
		background: #fff;
	}

	.code-tit {
		font-size: 28rpx;
		line-height: 28rpx;
	}

	.code-num {
		font-size: 30rpx;
		line-height: 30rpx;
		padding-top: 23rpx;
	}

	.qrcode-box {
		width: 100%;
		border-bottom: 1rpx dashed #eaeef1;
		margin-bottom: 6rpx;
	}

	.list-item {
		text-align: center;
		align-items: center;
		justify-content: space-between;
		font-size: 28rpx;
	}

	.list-item::after {
		left: 0;
	}

	.item-tit {
		color: #666;
	}

	.item-con {
		color: #333;
	}

	.explain {
		font-size: 28rpx;
		line-height: 28rpx;
		color: #666;
		padding: 33rpx 0 25rpx 0;
	}

	.explain-text {
		font-size: 28rpx;
		line-height: 41rpx;
		color: #333;
	}

	.none {
		width: 100%;
		position: fixed;
		text-align: center;
		font-size: 30rpx;
		color: #ccc;
		top: 49%;
	}

	.tui-rotate_90 {
		transform: rotate(90deg);
	}
</style>