457 lines
12 KiB
Vue
457 lines
12 KiB
Vue
<template>
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<view class="share-container">
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<!-- This is the content that will be shared as an image -->
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<view class="share-content" :class="{ 'is-loaded': isLoaded }">
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<view class="title">扫码注册</view>
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<image
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class="qr-code"
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:src="qrCodeImage"
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mode="aspectFit"
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v-if="qrCodeImage"
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></image>
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<view v-else class="qr-code-placeholder">
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<view class="loader"></view>
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</view>
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<view class="tip">扫描二维码，即可完成操作</view>
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</view>
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<button
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class="share-button"
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:class="{ 'is-loaded': isLoaded }"
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@click="sharePage"
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>
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保存图片并分享
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</button>
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<!-- Canvas for generating the share image, positioned off-screen -->
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<canvas
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canvas-id="shareCanvas"
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:style="{
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width: canvasWidth + 'px',
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height: canvasHeight + 'px',
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position: 'fixed',
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left: '200%',
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}"
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/>
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</view>
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</template>
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<script>
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import { getShareCode } from '@/config/share'
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export default {
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name: 'ShareQRCode',
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data() {
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return {
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qrCodeImage: '',
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// Set canvas dimensions. It's better to get device screen width for this.
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canvasWidth: 375,
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canvasHeight: 550,
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isLoaded: false,
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}
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},
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onLoad() {
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this.handleGetShareCode()
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// Get screen width to set canvas width dynamically
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uni.getSystemInfo({
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success: res => {
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this.canvasWidth = res.windowWidth
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// Adjust height proportionally or keep it fixed
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this.canvasHeight = res.windowWidth * 1.4
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},
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})
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},
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onReady() {
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// Use a short timeout to ensure the initial render is complete before animation
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setTimeout(() => {
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this.isLoaded = true
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}, 100)
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},
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methods: {
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handleGetShareCode() {
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// Don't show loading toast, use the placeholder loader instead
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// uni.showLoading({ title: '加载中...' })
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getShareCode()
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.then(res => {
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// The screenshot shows the base64 string is in data.datStr
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if (res.code === 200 && res.data && res.data.dataStr) {
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this.qrCodeImage = 'data:image/png;base64,' + res.data.dataStr
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} else {
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uni.showToast({
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title: '获取分享码失败',
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icon: 'none',
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})
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}
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})
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.catch(err => {
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console.error('getShareCode error:', err)
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uni.showToast({
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title: '网络错误，请稍后再试',
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icon: 'none',
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})
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})
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},
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async sharePage() {
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if (!this.qrCodeImage) {
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uni.showToast({
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title: '二维码尚未生成',
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icon: 'none',
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})
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return
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}
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uni.showLoading({ title: '正在生成图片...' })
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try {
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const tempImagePath = await this.base64ToTempFilePath(this.qrCodeImage)
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if (!tempImagePath) {
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throw new Error('图片处理失败')
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}
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const ctx = uni.createCanvasContext('shareCanvas', this)
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this.drawShareImage(ctx, tempImagePath)
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ctx.draw(false, () => {
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this.saveCanvasToAlbum()
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})
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} catch (error) {
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uni.hideLoading()
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uni.showToast({ title: error.message || '图片生成失败', icon: 'none' })
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console.error('sharePage error:', error)
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}
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},
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drawShareImage(ctx, tempImagePath) {
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const canvasWidth = this.canvasWidth
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const canvasHeight = this.canvasHeight
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// White background
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ctx.fillStyle = '#FFFFFF'
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ctx.fillRect(0, 0, canvasWidth, canvasHeight)
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// Title
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ctx.setFontSize(22)
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ctx.fillStyle = '#1e1e1e'
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ctx.textAlign = 'center'
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ctx.fillText('扫码注册', canvasWidth / 2, 70)
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// QR Code Image
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const qrCodeSize = canvasWidth * 0.7
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const qrCodeX = (canvasWidth - qrCodeSize) / 2
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const qrCodeY = 120
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ctx.drawImage(tempImagePath, qrCodeX, qrCodeY, qrCodeSize, qrCodeSize)
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// Tip text
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ctx.setFontSize(15)
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ctx.fillStyle = '#888'
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ctx.textAlign = 'center'
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ctx.fillText(
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'扫描二维码，即可完成操作',
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canvasWidth / 2,
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qrCodeY + qrCodeSize + 50
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)
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},
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saveCanvasToAlbum() {
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uni.canvasToTempFilePath(
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{
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canvasId: 'shareCanvas',
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success: res => {
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// #ifdef H5
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// For H5, trigger download instead of saving to album
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const link = document.createElement('a')
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link.href = res.tempFilePath
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link.download = `share_qrcode_${Date.now()}.png`
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document.body.appendChild(link)
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link.click()
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document.body.removeChild(link)
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uni.hideLoading()
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uni.showToast({
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title: '图片已开始下载',
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icon: 'success',
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})
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// #endif
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// #ifndef H5
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// For App and Mini Programs
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uni.saveImageToPhotosAlbum({
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filePath: res.tempFilePath,
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success: () => {
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uni.hideLoading()
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uni.showToast({
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title: '图片已保存到相册',
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icon: 'success',
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})
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},
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fail: err => {
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uni.hideLoading()
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if (
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err.errMsg &&
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(err.errMsg.includes('auth deny') ||
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err.errMsg.includes('auth denied'))
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) {
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uni.showModal({
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title: '提示',
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content: '需要您授权保存相册',
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showCancel: false,
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success: () => {
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uni.openSetting({
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success(settingdata) {
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if (
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settingdata.authSetting['scope.writePhotosAlbum']
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) {
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uni.showToast({
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title: '授权成功，请重试',
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icon: 'none',
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})
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} else {
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uni.showToast({
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title: '获取权限失败',
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icon: 'none',
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})
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}
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},
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})
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},
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})
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} else {
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uni.showToast({ title: '保存失败', icon: 'none' })
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console.error('saveImageToPhotosAlbum fail:', err)
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}
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},
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})
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// #endif
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},
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fail: err => {
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uni.hideLoading()
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uni.showToast({ title: '图片转换失败', icon: 'none' })
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console.error('canvasToTempFilePath fail:', err)
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},
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},
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this
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)
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},
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base64ToTempFilePath(base64) {
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return new Promise((resolve, reject) => {
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// #ifdef H5
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// For H5, we load the base64 into an Image to ensure it's valid,
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// but resolve with the base64 string to avoid Uniapp's internal errors
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// when its functions expect a string path instead of an Image object.
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const image = new Image()
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// Resolve CORS issue for QR code from different origin
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image.crossOrigin = 'Anonymous'
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image.src = base64
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image.onload = () => {
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// Resolve with the string, not the object.
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resolve(base64)
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}
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image.onerror = err => {
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console.error('Failed to load image for canvas on H5', err)
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reject(new Error('H5图片加载失败'))
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}
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// #endif
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// #ifndef H5
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// For App and Mini Programs, write to a temp file and return the path.
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const formattedBase64 = base64.replace(/^data:image\/\w+;base64,/, '')
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// Use a standard path for user data directory.
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const filePath = `${uni.env.USER_DATA_PATH}/share_${Date.now()}.png`
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uni.getFileSystemManager().writeFile({
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filePath,
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data: formattedBase64,
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encoding: 'base64',
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success: () => {
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resolve(filePath)
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},
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fail: err => {
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console.error('Failed to write temp file', err)
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reject(new Error('临时文件写入失败'))
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},
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})
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// #endif
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})
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},
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},
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}
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</script>
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<style lang="scss" scoped>
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.share-container {
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display: flex;
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flex-direction: column;
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align-items: center;
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justify-content: center;
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padding: 40rpx;
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background: linear-gradient(to bottom, #e0f7fa 0%, #ffffff 100%);
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min-height: 100vh;
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box-sizing: border-box;
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position: relative;
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overflow: hidden;
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}
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@keyframes float {
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0% {
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transform: translateY(0px) scale(1);
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opacity: 0.7;
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}
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50% {
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transform: translateY(-20px) scale(1.03);
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opacity: 1;
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}
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100% {
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transform: translateY(0px) scale(1);
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opacity: 0.7;
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}
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}
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.share-container::before,
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.share-container::after {
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content: '';
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position: absolute;
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border-radius: 50%;
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background: linear-gradient(
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to top,
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rgba(0, 198, 255, 0.05),
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rgba(0, 114, 255, 0.1)
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);
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z-index: 1;
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pointer-events: none;
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}
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.share-container::before {
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width: 400rpx;
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height: 400rpx;
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top: -150rpx;
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left: -150rpx;
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animation: float 12s ease-in-out infinite;
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}
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.share-container::after {
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width: 500rpx;
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height: 500rpx;
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bottom: -200rpx;
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right: -200rpx;
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animation: float 15s ease-in-out infinite -5s;
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}
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.share-content {
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background: radial-gradient(
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circle at 50% 0%,
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rgba(220, 235, 255, 0.9),
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#ffffff 80%
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);
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border-radius: 30rpx;
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padding: 80rpx 50rpx;
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display: flex;
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flex-direction: column;
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align-items: center;
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width: 100%;
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box-shadow:
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0 16rpx 48rpx rgba(0, 0, 0, 0.1),
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inset 0 1px 2px rgba(255, 255, 255, 0.7);
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margin-bottom: 60rpx;
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position: relative;
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z-index: 2;
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opacity: 0;
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transform: translateY(40rpx);
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transition:
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transform 0.6s cubic-bezier(0.25, 1, 0.5, 1),
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opacity 0.6s ease;
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overflow: hidden;
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}
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.share-content::before {
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content: '';
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position: absolute;
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top: 0;
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left: 0;
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right: 0;
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height: 6rpx;
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background-image: linear-gradient(90deg, #00c6ff, #0072ff);
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opacity: 0.9;
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}
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.share-content.is-loaded {
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opacity: 1;
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transform: translateY(0);
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}
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.title {
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font-size: 44rpx;
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font-weight: 500;
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color: #1e1e1e;
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margin-bottom: 60rpx;
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}
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.qr-code {
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width: 450rpx;
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height: 450rpx;
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margin-bottom: 30rpx;
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border-radius: 16rpx;
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}
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.qr-code-placeholder {
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width: 450rpx;
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height: 450rpx;
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background-color: #f0f2f5;
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display: flex;
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align-items: center;
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justify-content: center;
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margin-bottom: 30rpx;
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border-radius: 16rpx;
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}
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.loader {
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width: 100rpx;
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height: 100rpx;
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border: 8rpx solid rgba(0, 0, 0, 0.1);
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border-left-color: #0072ff;
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border-radius: 50%;
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animation: spin 1s linear infinite;
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}
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@keyframes spin {
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to {
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transform: rotate(360deg);
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}
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}
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.tip {
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font-size: 30rpx;
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color: #888;
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}
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.share-button {
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margin-top: 0;
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width: 90%;
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background-image: linear-gradient(90deg, #0072ff, #00c6ff);
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color: white;
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border-radius: 50rpx;
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font-size: 34rpx;
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height: 100rpx;
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line-height: 100rpx;
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box-shadow: 0 10rpx 20rpx rgba(0, 114, 255, 0.25);
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border: none;
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transition:
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transform 0.2s ease,
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box-shadow 0.2s ease;
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z-index: 2;
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opacity: 0;
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transform: translateY(40rpx);
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transition:
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transform 0.6s cubic-bezier(0.25, 1, 0.5, 1) 0.1s,
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opacity 0.6s ease 0.1s;
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}
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.share-button.is-loaded {
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opacity: 1;
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transform: translateY(0);
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}
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.share-button:active {
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transform: translateY(2rpx);
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box-shadow: 0 6rpx 12rpx rgba(0, 114, 255, 0.3);
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}
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</style>
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