169 lines
4.9 KiB
JavaScript
169 lines
4.9 KiB
JavaScript
/*
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* 手太欠
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* 愿这世界都如故事里一样 美好而动人~
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*/
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Page({
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/**
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* 页面的初始数据
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*/
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data: {
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barHeight : getApp().globalData.barHeight, // 状态栏高度
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shareSee : false, //分享弹出
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inviteText : '', //邀请码
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inviteCode : '', //二维码
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//海报
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canvas : ''
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},
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/**
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* 生命周期函数--监听页面加载
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*/
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onLoad(options) {
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// 初始化画布
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wx.createSelectorQuery().select('#coverCanvas').fields({node: true, size: true}).exec(canvasNode => {
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const canvas = canvasNode[0].node
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canvas.width = 375
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canvas.height = 800
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this.setData({
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canvas
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})
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})
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},
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/**
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* 生命周期函数--监听页面显示
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*/
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onShow() {
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// 小程序码
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this.ShareInfo();
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},
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/**
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* 小程序码
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*/
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ShareInfo() {
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wx.$api.user.miniShare({
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url: 'pages/mall/index'
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}).then(res => {
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this.setData({
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inviteCode: res.data.qrcode
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})
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}).catch(err => {})
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},
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/**
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* 生成海报
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*/
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onCanvas(){
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wx.showLoading({
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title: '生成图片中...',
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mask : true
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})
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const canvas = this.data.canvas
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const ctx = canvas.getContext('2d')
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const codeImgEl = canvas.createImage()
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const backBackEl = canvas.createImage()
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// codeImgEl.src = this.data.inviteCode //二维码
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codeImgEl.src = '/static/imgs/userHead.png' //二维码
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backBackEl.src = 'https://cdn.douhuofalv.com/images/2023/08/11/cd8093d6ab1a248e5154be48b0ddcaac.jpg' //背景素材
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const codeImgLoding = new Promise((resolve, reason) => {
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codeImgEl.onload = () => {
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resolve()
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}
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})
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const backBackLoding = new Promise((resolve, reason) => {
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backBackEl.onload = () => {
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resolve()
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}
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})
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Promise.all([codeImgLoding, backBackLoding]).then(() => {
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ctx.drawImage(backBackEl, 0, 0, 375, 800)
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// 绘制[二维码-白色背景]
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ctx.fillStyle = "#ffffff";
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ctx.fillRect(140, 610, 130, 130);
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// 绘制[二维码-白色背景黑框]
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ctx.strokeStyle = "#da2b54";
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ctx.lineWidth = 2
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ctx.strokeRect(140, 610, 132, 132);
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// 绘制[二维码]
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ctx.drawImage(codeImgEl, 150, 620, 110, 110)
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// 文字
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ctx.font = "bold 14px Arial"; //字体大小
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ctx.fillStyle = "#ffffff"; //字体颜色
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ctx.textAlign = "center"
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ctx.fillText('保存并分享二维码', 208, 770);
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wx.hideLoading()
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wx.canvasToTempFilePath({
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canvas: this.data.canvas,
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success : res => {
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wx.saveImageToPhotosAlbum({
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filePath: res.tempFilePath,
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success: saveRes => {
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wx.showToast({
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title: '海报已保存至您的相册',
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icon : 'none'
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})
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this.setData({
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shareSee: false
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})
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},
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fail: () => {
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wx.hideLoading()
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wx.showModal({
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title: '提示',
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content: '暂未授权小程序写入您的相册，无法存储海报',
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confirmColor: '#e50d01',
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confirmText: '去设置',
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success: res => {
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if (res.confirm) {
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wx.openSetting()
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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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})
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}).catch(err => {
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wx.showToast({
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title: '图片加载失败',
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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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* 分享弹出
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*/
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shareTap() {
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this.setData({
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shareSee: !this.data.shareSee
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})
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},
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// 返回上一页
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returnGo() {
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wx.navigateBack()
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},
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/**
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* 微信分享
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*/
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onShareAppMessage(){
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this.setData({
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shareSee: false
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})
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return {
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title : '水感应修复、紧致、舒缓喷雾',
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path : "/pages/index/index?invite=" + wx.getStorageSync("invite"),
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imageUrl: "https://cdn.shuiganying.com/images/2023/04/04/9cd9968136e7efd85028fba69e4c587a.jpg"
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}
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}
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}) |