120 lines
2.5 KiB
Vue
120 lines
2.5 KiB
Vue
<template>
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<view class="popup-mask" v-if="visible" @click.self="close">
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<view class="popup-content">
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<view class="popup-title">优惠券二维码</view>
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<view class="qrcode-area">
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<canvas canvas-id="qrcode" id="qrcode" class="qrcode-canvas"></canvas>
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<text class="coupon-code">{{ code }}</text>
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</view>
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<view class="popup-tip">请将二维码出示给商户扫码核销</view>
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<button class="btn-close" @click="close">关闭</button>
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</view>
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</view>
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</template>
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<script>
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import UQRCode from 'uqrcodejs'
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export default {
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name: 'QrcodePopup',
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props: {
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visible: { type: Boolean, default: false },
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code: { type: String, default: '' }
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},
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emits: ['close'],
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watch: {
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visible(val) {
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if (val && this.code) {
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this.$nextTick(() => {
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setTimeout(() => this.drawQrcode(), 100)
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})
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}
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}
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},
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methods: {
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close() {
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this.$emit('close')
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},
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drawQrcode() {
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const qr = new UQRCode()
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qr.data = this.code
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qr.size = 200
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qr.make()
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const ctx = uni.createCanvasContext('qrcode', this)
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// 白色背景
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ctx.setFillStyle('#ffffff')
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ctx.fillRect(0, 0, 200, 200)
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// 绘制二维码模块
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const tileSize = qr.moduleSize
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for (let row = 0; row < qr.moduleCount; row++) {
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for (let col = 0; col < qr.moduleCount; col++) {
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if (qr.modules[row][col]) {
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ctx.setFillStyle('#333333')
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} else {
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ctx.setFillStyle('#ffffff')
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}
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const x = qr.paintingX + col * tileSize
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const y = qr.paintingY + row * tileSize
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ctx.fillRect(x, y, tileSize, tileSize)
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}
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}
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ctx.draw()
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}
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}
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}
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</script>
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<style scoped>
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.popup-mask {
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position: fixed;
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top: 0; left: 0; right: 0; bottom: 0;
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background: rgba(0, 0, 0, 0.5);
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display: flex;
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align-items: center;
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justify-content: center;
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z-index: 999;
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}
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.popup-content {
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background: #fff;
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border-radius: 24rpx;
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padding: 40rpx;
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width: 560rpx;
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text-align: center;
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}
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.popup-title {
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font-size: 34rpx;
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font-weight: bold;
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color: #333;
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margin-bottom: 30rpx;
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}
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.qrcode-area {
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display: flex;
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flex-direction: column;
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align-items: center;
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margin-bottom: 20rpx;
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}
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.qrcode-canvas {
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width: 400rpx;
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height: 400rpx;
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}
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.coupon-code {
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font-size: 28rpx;
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color: #666;
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margin-top: 16rpx;
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letter-spacing: 4rpx;
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}
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.popup-tip {
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font-size: 24rpx;
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color: #999;
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margin-bottom: 30rpx;
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}
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.btn-close {
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background: #f5f5f5;
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color: #666;
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border-radius: 8rpx;
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font-size: 28rpx;
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}
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</style>
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