forked from angelo/web-retail-h5
457 lines
12 KiB
Vue
457 lines
12 KiB
Vue
<template>
|
||
<view class="share-container">
|
||
<!-- This is the content that will be shared as an image -->
|
||
<view class="share-content" :class="{ 'is-loaded': isLoaded }">
|
||
<view class="title">扫码注册</view>
|
||
<image
|
||
class="qr-code"
|
||
:src="qrCodeImage"
|
||
mode="aspectFit"
|
||
v-if="qrCodeImage"
|
||
></image>
|
||
<view v-else class="qr-code-placeholder">
|
||
<view class="loader"></view>
|
||
</view>
|
||
<view class="tip">扫描二维码，即可完成操作</view>
|
||
</view>
|
||
|
||
<button
|
||
class="share-button"
|
||
:class="{ 'is-loaded': isLoaded }"
|
||
@click="sharePage"
|
||
>
|
||
保存图片并分享
|
||
</button>
|
||
|
||
<!-- Canvas for generating the share image, positioned off-screen -->
|
||
<canvas
|
||
canvas-id="shareCanvas"
|
||
:style="{
|
||
width: canvasWidth + 'px',
|
||
height: canvasHeight + 'px',
|
||
position: 'fixed',
|
||
left: '200%',
|
||
}"
|
||
/>
|
||
</view>
|
||
</template>
|
||
|
||
<script>
|
||
import { getShareCode } from '@/config/share'
|
||
|
||
export default {
|
||
name: 'ShareQRCode',
|
||
data() {
|
||
return {
|
||
qrCodeImage: '',
|
||
// Set canvas dimensions. It's better to get device screen width for this.
|
||
canvasWidth: 375,
|
||
canvasHeight: 550,
|
||
isLoaded: false,
|
||
}
|
||
},
|
||
onLoad() {
|
||
this.handleGetShareCode()
|
||
// Get screen width to set canvas width dynamically
|
||
uni.getSystemInfo({
|
||
success: res => {
|
||
this.canvasWidth = res.windowWidth
|
||
// Adjust height proportionally or keep it fixed
|
||
this.canvasHeight = res.windowWidth * 1.4
|
||
},
|
||
})
|
||
},
|
||
onReady() {
|
||
// Use a short timeout to ensure the initial render is complete before animation
|
||
setTimeout(() => {
|
||
this.isLoaded = true
|
||
}, 100)
|
||
},
|
||
methods: {
|
||
handleGetShareCode() {
|
||
// Don't show loading toast, use the placeholder loader instead
|
||
// uni.showLoading({ title: '加载中...' })
|
||
getShareCode()
|
||
.then(res => {
|
||
// The screenshot shows the base64 string is in data.datStr
|
||
if (res.code === 200 && res.data && res.data.dataStr) {
|
||
this.qrCodeImage = 'data:image/png;base64,' + res.data.dataStr
|
||
} else {
|
||
uni.showToast({
|
||
title: '获取分享码失败',
|
||
icon: 'none',
|
||
})
|
||
}
|
||
})
|
||
.catch(err => {
|
||
console.error('getShareCode error:', err)
|
||
uni.showToast({
|
||
title: '网络错误，请稍后再试',
|
||
icon: 'none',
|
||
})
|
||
})
|
||
},
|
||
|
||
async sharePage() {
|
||
if (!this.qrCodeImage) {
|
||
uni.showToast({
|
||
title: '二维码尚未生成',
|
||
icon: 'none',
|
||
})
|
||
return
|
||
}
|
||
uni.showLoading({ title: '正在生成图片...' })
|
||
|
||
try {
|
||
const tempImagePath = await this.base64ToTempFilePath(this.qrCodeImage)
|
||
if (!tempImagePath) {
|
||
throw new Error('图片处理失败')
|
||
}
|
||
|
||
const ctx = uni.createCanvasContext('shareCanvas', this)
|
||
this.drawShareImage(ctx, tempImagePath)
|
||
|
||
ctx.draw(false, () => {
|
||
this.saveCanvasToAlbum()
|
||
})
|
||
} catch (error) {
|
||
uni.hideLoading()
|
||
uni.showToast({ title: error.message || '图片生成失败', icon: 'none' })
|
||
console.error('sharePage error:', error)
|
||
}
|
||
},
|
||
|
||
drawShareImage(ctx, tempImagePath) {
|
||
const canvasWidth = this.canvasWidth
|
||
const canvasHeight = this.canvasHeight
|
||
|
||
// White background
|
||
ctx.fillStyle = '#FFFFFF'
|
||
ctx.fillRect(0, 0, canvasWidth, canvasHeight)
|
||
|
||
// Title
|
||
ctx.setFontSize(22)
|
||
ctx.fillStyle = '#1e1e1e'
|
||
ctx.textAlign = 'center'
|
||
ctx.fillText('扫码注册', canvasWidth / 2, 70)
|
||
|
||
// QR Code Image
|
||
const qrCodeSize = canvasWidth * 0.7
|
||
const qrCodeX = (canvasWidth - qrCodeSize) / 2
|
||
const qrCodeY = 120
|
||
ctx.drawImage(tempImagePath, qrCodeX, qrCodeY, qrCodeSize, qrCodeSize)
|
||
|
||
// Tip text
|
||
ctx.setFontSize(15)
|
||
ctx.fillStyle = '#888'
|
||
ctx.textAlign = 'center'
|
||
ctx.fillText(
|
||
'扫描二维码，即可完成操作',
|
||
canvasWidth / 2,
|
||
qrCodeY + qrCodeSize + 50
|
||
)
|
||
},
|
||
|
||
saveCanvasToAlbum() {
|
||
uni.canvasToTempFilePath(
|
||
{
|
||
canvasId: 'shareCanvas',
|
||
success: res => {
|
||
// #ifdef H5
|
||
// For H5, trigger download instead of saving to album
|
||
const link = document.createElement('a')
|
||
link.href = res.tempFilePath
|
||
link.download = `share_qrcode_${Date.now()}.png`
|
||
document.body.appendChild(link)
|
||
link.click()
|
||
document.body.removeChild(link)
|
||
uni.hideLoading()
|
||
uni.showToast({
|
||
title: '图片已开始下载',
|
||
icon: 'success',
|
||
})
|
||
// #endif
|
||
|
||
// #ifndef H5
|
||
// For App and Mini Programs
|
||
uni.saveImageToPhotosAlbum({
|
||
filePath: res.tempFilePath,
|
||
success: () => {
|
||
uni.hideLoading()
|
||
uni.showToast({
|
||
title: '图片已保存到相册',
|
||
icon: 'success',
|
||
})
|
||
},
|
||
fail: err => {
|
||
uni.hideLoading()
|
||
if (
|
||
err.errMsg &&
|
||
(err.errMsg.includes('auth deny') ||
|
||
err.errMsg.includes('auth denied'))
|
||
) {
|
||
uni.showModal({
|
||
title: '提示',
|
||
content: '需要您授权保存相册',
|
||
showCancel: false,
|
||
success: () => {
|
||
uni.openSetting({
|
||
success(settingdata) {
|
||
if (
|
||
settingdata.authSetting['scope.writePhotosAlbum']
|
||
) {
|
||
uni.showToast({
|
||
title: '授权成功，请重试',
|
||
icon: 'none',
|
||
})
|
||
} else {
|
||
uni.showToast({
|
||
title: '获取权限失败',
|
||
icon: 'none',
|
||
})
|
||
}
|
||
},
|
||
})
|
||
},
|
||
})
|
||
} else {
|
||
uni.showToast({ title: '保存失败', icon: 'none' })
|
||
console.error('saveImageToPhotosAlbum fail:', err)
|
||
}
|
||
},
|
||
})
|
||
// #endif
|
||
},
|
||
fail: err => {
|
||
uni.hideLoading()
|
||
uni.showToast({ title: '图片转换失败', icon: 'none' })
|
||
console.error('canvasToTempFilePath fail:', err)
|
||
},
|
||
},
|
||
this
|
||
)
|
||
},
|
||
|
||
base64ToTempFilePath(base64) {
|
||
return new Promise((resolve, reject) => {
|
||
// #ifdef H5
|
||
// For H5, we load the base64 into an Image to ensure it's valid,
|
||
// but resolve with the base64 string to avoid Uniapp's internal errors
|
||
// when its functions expect a string path instead of an Image object.
|
||
const image = new Image()
|
||
// Resolve CORS issue for QR code from different origin
|
||
image.crossOrigin = 'Anonymous'
|
||
image.src = base64
|
||
image.onload = () => {
|
||
// Resolve with the string, not the object.
|
||
resolve(base64)
|
||
}
|
||
image.onerror = err => {
|
||
console.error('Failed to load image for canvas on H5', err)
|
||
reject(new Error('H5图片加载失败'))
|
||
}
|
||
// #endif
|
||
|
||
// #ifndef H5
|
||
// For App and Mini Programs, write to a temp file and return the path.
|
||
const formattedBase64 = base64.replace(/^data:image\/\w+;base64,/, '')
|
||
// Use a standard path for user data directory.
|
||
const filePath = `${uni.env.USER_DATA_PATH}/share_${Date.now()}.png`
|
||
uni.getFileSystemManager().writeFile({
|
||
filePath,
|
||
data: formattedBase64,
|
||
encoding: 'base64',
|
||
success: () => {
|
||
resolve(filePath)
|
||
},
|
||
fail: err => {
|
||
console.error('Failed to write temp file', err)
|
||
reject(new Error('临时文件写入失败'))
|
||
},
|
||
})
|
||
// #endif
|
||
})
|
||
},
|
||
},
|
||
}
|
||
</script>
|
||
|
||
<style lang="scss" scoped>
|
||
.share-container {
|
||
display: flex;
|
||
flex-direction: column;
|
||
align-items: center;
|
||
justify-content: center;
|
||
padding: 40rpx;
|
||
background: linear-gradient(to bottom, #e0f7fa 0%, #ffffff 100%);
|
||
min-height: 100vh;
|
||
box-sizing: border-box;
|
||
position: relative;
|
||
overflow: hidden;
|
||
}
|
||
|
||
@keyframes float {
|
||
0% {
|
||
transform: translateY(0px) scale(1);
|
||
opacity: 0.7;
|
||
}
|
||
50% {
|
||
transform: translateY(-20px) scale(1.03);
|
||
opacity: 1;
|
||
}
|
||
100% {
|
||
transform: translateY(0px) scale(1);
|
||
opacity: 0.7;
|
||
}
|
||
}
|
||
|
||
.share-container::before,
|
||
.share-container::after {
|
||
content: '';
|
||
position: absolute;
|
||
border-radius: 50%;
|
||
background: linear-gradient(
|
||
to top,
|
||
rgba(0, 198, 255, 0.05),
|
||
rgba(0, 114, 255, 0.1)
|
||
);
|
||
z-index: 1;
|
||
pointer-events: none;
|
||
}
|
||
|
||
.share-container::before {
|
||
width: 400rpx;
|
||
height: 400rpx;
|
||
top: -150rpx;
|
||
left: -150rpx;
|
||
animation: float 12s ease-in-out infinite;
|
||
}
|
||
|
||
.share-container::after {
|
||
width: 500rpx;
|
||
height: 500rpx;
|
||
bottom: -200rpx;
|
||
right: -200rpx;
|
||
animation: float 15s ease-in-out infinite -5s;
|
||
}
|
||
|
||
.share-content {
|
||
background: radial-gradient(
|
||
circle at 50% 0%,
|
||
rgba(220, 235, 255, 0.9),
|
||
#ffffff 80%
|
||
);
|
||
border-radius: 30rpx;
|
||
padding: 80rpx 50rpx;
|
||
display: flex;
|
||
flex-direction: column;
|
||
align-items: center;
|
||
width: 100%;
|
||
box-shadow:
|
||
0 16rpx 48rpx rgba(0, 0, 0, 0.1),
|
||
inset 0 1px 2px rgba(255, 255, 255, 0.7);
|
||
margin-bottom: 60rpx;
|
||
position: relative;
|
||
z-index: 2;
|
||
opacity: 0;
|
||
transform: translateY(40rpx);
|
||
transition:
|
||
transform 0.6s cubic-bezier(0.25, 1, 0.5, 1),
|
||
opacity 0.6s ease;
|
||
overflow: hidden;
|
||
}
|
||
|
||
.share-content::before {
|
||
content: '';
|
||
position: absolute;
|
||
top: 0;
|
||
left: 0;
|
||
right: 0;
|
||
height: 6rpx;
|
||
background-image: linear-gradient(90deg, #00c6ff, #0072ff);
|
||
opacity: 0.9;
|
||
}
|
||
|
||
.share-content.is-loaded {
|
||
opacity: 1;
|
||
transform: translateY(0);
|
||
}
|
||
|
||
.title {
|
||
font-size: 44rpx;
|
||
font-weight: 500;
|
||
color: #1e1e1e;
|
||
margin-bottom: 60rpx;
|
||
}
|
||
|
||
.qr-code {
|
||
width: 450rpx;
|
||
height: 450rpx;
|
||
margin-bottom: 30rpx;
|
||
border-radius: 16rpx;
|
||
}
|
||
|
||
.qr-code-placeholder {
|
||
width: 450rpx;
|
||
height: 450rpx;
|
||
background-color: #f0f2f5;
|
||
display: flex;
|
||
align-items: center;
|
||
justify-content: center;
|
||
margin-bottom: 30rpx;
|
||
border-radius: 16rpx;
|
||
}
|
||
|
||
.loader {
|
||
width: 100rpx;
|
||
height: 100rpx;
|
||
border: 8rpx solid rgba(0, 0, 0, 0.1);
|
||
border-left-color: #0072ff;
|
||
border-radius: 50%;
|
||
animation: spin 1s linear infinite;
|
||
}
|
||
|
||
@keyframes spin {
|
||
to {
|
||
transform: rotate(360deg);
|
||
}
|
||
}
|
||
|
||
.tip {
|
||
font-size: 30rpx;
|
||
color: #888;
|
||
}
|
||
|
||
.share-button {
|
||
margin-top: 0;
|
||
width: 90%;
|
||
background-image: linear-gradient(90deg, #0072ff, #00c6ff);
|
||
color: white;
|
||
border-radius: 50rpx;
|
||
font-size: 34rpx;
|
||
height: 100rpx;
|
||
line-height: 100rpx;
|
||
box-shadow: 0 10rpx 20rpx rgba(0, 114, 255, 0.25);
|
||
border: none;
|
||
transition:
|
||
transform 0.2s ease,
|
||
box-shadow 0.2s ease;
|
||
z-index: 2;
|
||
opacity: 0;
|
||
transform: translateY(40rpx);
|
||
transition:
|
||
transform 0.6s cubic-bezier(0.25, 1, 0.5, 1) 0.1s,
|
||
opacity 0.6s ease 0.1s;
|
||
}
|
||
|
||
.share-button.is-loaded {
|
||
opacity: 1;
|
||
transform: translateY(0);
|
||
}
|
||
|
||
.share-button:active {
|
||
transform: translateY(2rpx);
|
||
box-shadow: 0 6rpx 12rpx rgba(0, 114, 255, 0.3);
|
||
}
|
||
</style>
|