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- <template>
- <view class="main">
- <view class="qrimg">
- <tki-qrcode :cid="cid" ref="qrcode" :val="val" :size="size" :unit="unit" :background="background"
- :foreground="foreground" :pdground="pdground" :icon="icon" :iconSize="iconSize" :lv="lv" :onval="onval" :showLoading="showLoading"
- :loadMake="loadMake" :usingComponents="usingComponents" @result="qrR" />
- </view>
- <canvas :style="{ width: '600rpx', height: '1066rpx',}" canvas-id="myCanvas" id="myCanvas" class="hb"></canvas>
- <view class="btm-btn" v-if="fina">
- <!-- <view class="btn" @click="comfirm">
- <image src="../../static/icon/fzlj.png" mode=""></image>
- <view class="">
- 复制邀请链接
- </view>
- </view> -->
- <view class="btn" @click="saveShareQrcode">
- <image src="../../static/icon/fxhb.png" mode=""></image>
- <view class="">
- 保存分享海报
- </view>
- </view>
- </view>
- </view>
- </template>
- <script>
- import {
- mapState,
- mapMutations
- } from 'vuex';
- import {
- getUserInfo
- } from '@/api/user.js';
- var that
- export default {
- data() {
- return {
- cid: 'tki-qrcode-canvas', //canvasId,页面存在多个二维码组件时需设置不同的ID
- size:300, //生成的二维码大小
- unit: 'upx', //大小单位尺寸
- // show: true,//默认使用组件中的image标签显示二维码
- val: '', //要生成的内容
- background: '#ffffff', //二维码背景色
- foreground: '#333333', //二维码前景色
- pdground: '#333333', //二维码角标色
- icon: '', //二维码图标URL(必须是本地图片,网络图需要先下载至本地)
- iconSize: 40, //二维码图标大小
- lv: 3, //容错级别
- onval: true, //监听val值变化自动重新生成二维码
- loadMake: true, //组件初始化完成后自动生成二维码,val需要有值
- usingComponents: false, //是否使用了自定义组件模式(主要是为了修复非自定义组件模式时 v-if 无法生成二维码的问题)
- showLoading: false, //是否显示loading
- erweimasrc: '',
- canvasW: 0, // 画布宽
- canvasH: 0, // 画布高
- SystemInfo: {}, // 设备信息
- goodsImg: {}, // 商品主图
- ewmImg: {}, // 二维码图片
- ewmW: 0, // 二维码大小
- title: '', // 商品标题
- canvasShow: true,
- shareQrcodeUrl: '', //canvas本地路径
- ratio: '', //画布比例
- fina: false,
- }
- },
- computed: {
- ...mapState(['baseURL', 'urlFile']),
- ...mapState('user', ['userInfo', 'orderInfo', 'hasLogin'])
- },
- onLoad(options) {
- const obj = this;
- if (!this.userInfo.uid) {
- getUserInfo({}).then(e => {
- // 保存返回用户数据
- obj.setUserInfo(e.data);
- //成功跳转首页
- uni.switchTab({
- url: '/pages/index/index'
- });
- });
- } else {
- this.val = this.baseURL + '/index/#/pages/public/index?spread=' + this.userInfo.uid
- }
- },
- methods: {
- uniCopy(content) {
- /**
- * 小程序端 和 app端的复制逻辑
- */
- //#ifndef H5
- uni.setClipboardData({
- data: content,
- success: function() {
- console.log('success');
- return true;
- }
- });
- //#endif
-
- /**
- * H5端的复制逻辑
- */
- // #ifdef H5
- if (!document.queryCommandSupported('copy')) {
- //为了兼容有些浏览器 queryCommandSupported 的判断
- // 不支持
- return false;
- }
- let textarea = document.createElement('textarea');
- textarea.value = content;
- textarea.readOnly = 'readOnly';
- document.body.appendChild(textarea);
- textarea.select(); // 选择对象
- textarea.setSelectionRange(0, content.length); //核心
- let result = document.execCommand('copy'); // 执行浏览器复制命令
- textarea.remove();
- return result;
- // #endif
- },
- comfirm() {
- const result = this.uniCopy(this.val);
- if (result === false) {
- uni.showToast({
- title: '不支持'
- });
- } else {
- uni.showToast({
- title: '复制成功',
- icon: 'none'
- });
- }
- },
- qrR(res) {
- this.erweimasrc = res
- console.log(res, 'erweima');
- this.createPoster()
- },
- async createPoster() {
- let that = this
- // 获取设备信息,主要获取宽度,赋值给canvasW 也就是宽度:100%
- this.SystemInfo = await this.getSystemInfo();
- // 获取商品主图,二维码信息,APP端会返回图片的本地路径(H5端只能返回原路径)
- this.goodsImg = await this.getImageInfo('/static/img/sharebase.png');
- this.ewmImg = await this.getImageInfo(this.erweimasrc);
- // this.canvasW = this.SystemInfo.windowWidth; // 画布宽度
- this.ratio = this.SystemInfo.windowWidth / 750;
- this.canvasW = 600 * this.ratio;
- this.canvasH = 1066 * this.ratio;
- // #ifdef APP-PLUS
- this.ewmW = 350 * this.ratio;
- // #endif
- // #ifdef H5
- this.ewmW = 250 * this.ratio;
- // #endif
- console.log(this.canvasH, 'this.canvasH')
- // this.canvasH = this.goodsImg.height + this.ewmW + 200; // 画布高度 = 主图高度+二维码高度 + 文字图片的间距(大概50)
- // 如果主图,二维码图片,设备信息都获取成功,开始绘制海报,这里需要用setTimeout延时绘制,否则可能会出现图片不显示。
- if (this.goodsImg.errMsg == 'getImageInfo:ok' && this.ewmImg.errMsg == 'getImageInfo:ok' && this
- .SystemInfo.errMsg == 'getSystemInfo:ok') {
- console.log('ok')
- uni.showToast({
- icon: 'loading',
- mask: true,
- duration: 10000,
- title: '海报绘制中',
- });
- setTimeout(() => {
- var ctx = uni.createCanvasContext('myCanvas', this);
- // 填充背景色,白色
- ctx.setFillStyle('#fff'); // 默认白色
- ctx.fillRect(0, 0, this.canvasW, this.canvasH) // fillRect(x,y,宽度,高度)
-
- // 绘制商品主图,二维码
- ctx.drawImage(this.goodsImg.path, 0, 0, this.canvasW, this
- .canvasH) // drawImage(图片路径,x,y,绘制图像的宽度,绘制图像的高度)
- // #ifdef APP-PLUS
- ctx.drawImage(this.ewmImg.path, (this.canvasW / 2 - this.ewmW / 2),this.canvasH - 120*this.ratio - this.ewmW,
- this.ewmW, this.ewmW) // drawImage(图片路径,x,y,绘制图像的宽度,绘制图像的高度,二维码的宽,高)
-
- // #endif
- // #ifdef H5
- ctx.drawImage(this.ewmImg.path, (this.canvasW / 2 - this.ewmW / 2),this.canvasH - 170*this.ratio - this.ewmW,
- this.ewmW, this.ewmW) // drawImage(图片路径,x,y,绘制图像的宽度,绘制图像的高度,二维码的宽,高)
- // #endif
-
- // 3、绘制商品标题,多余文字自动换行
- ctx.setFontSize(24); // setFontSize() 设置字体字号
- ctx.setFillStyle('#fff'); // setFillStyle() 设置字体颜色
- ctx.textAlign = "center";
- // 邀请码
- ctx.fillText('邀请码:' + this.userInfo.uid,this.canvasW/2,this.canvasH -20)
- ctx.draw(false, (ret) => { // draw方法 把以上内容画到 canvas 中。
- console.log(ret)
- uni.showToast({
- icon: 'none',
- title: '生成成功!',
- });
- that.fina = true
- uni.canvasToTempFilePath({ // 保存canvas为图片
- canvasId: 'myCanvas',
- quality: 1,
- fileType: 'jpg',
- complete: function(res) {
- // 在H5平台下,tempFilePath 为 base64, // 图片提示跨域 H5保存base64失败,APP端正常输出临时路径
- console.log(res)
- that.canvasShow = false
- that.shareQrcodeUrl = res.tempFilePath
- that.$forceUpdate()
- setTimeout(function() {
- console.log(that.shareQrcodeUrl, that
- .canvasShow)
- }, 2000)
- },
- })
- });
- }, 1500)
- } else {
- console.log('err')
- }
- },
- // 获取图片信息
- getImageInfo(image) {
- return new Promise((req, rej) => {
- uni.getImageInfo({
- src: image,
- success: function(res) {
- req(res)
- },
- });
- })
- },
- // 获取设备信息
- getSystemInfo() {
- return new Promise((req, rej) => {
- uni.getSystemInfo({
- success: function(res) {
- req(res)
- }
- });
- })
- },
- //保存图片
- saveShareQrcode() {
- console.log(this.shareQrcodeUrl)
- uni.saveImageToPhotosAlbum({
- filePath: this.shareQrcodeUrl,
- success: (res) => {
- uni.showToast({
- icon: 'none',
- position: 'bottom',
- title: "成功保存到相册",
- });
- },
- fail: (err) => {
- //重新提示用户打开保存图片的授权
- if (err.errMsg === "saveImageToPhotosAlbum:fail auth deny") {
- uni.showModal({
- title: '提示',
- content: '需要您授权保存相册',
- showCancel: false,
- success(res) {
- if (res.confirm) {
- uni.openSetting({
- success(settingdata) {
- if (settingdata.authSetting[
- 'scope.writePhotosAlbum']) {
- uni.showModal({
- title: '提示',
- content: '获取权限成功,再次保存图片即可成功',
- showCancel: false,
- })
- } else {
- uni.showModal({
- title: '提示',
- content: '获取权限失败,无法保存到相册',
- showCancel: false
- })
- }
- }
- })
- }
- }
- })
- }
- },
- })
- }
- }
- }
- </script>
- <style lang="scss">
- .hb {
- margin: auto;
- }
- .qrimg {
- position: absolute;
- left: -9999rpx;
- top: -9999rpx;
- }
- button {
- height: 88upx;
- background-color: #feca00;
- color: #fff;
- border-radius: 44upx;
- text-align: center;
- line-height: 88upx;
- width: 60%;
- margin: 0 auto;
- margin-top: 30upx;
- }
-
- .btm-btn {
- position: fixed;
- bottom: 0;
- width: 750rpx;
- height: 200rpx;
- display: flex;
- background-color: #fff;
- border-radius: 20rpx 20rpx 0 0;
- justify-content: center;
- .btn {
- width: 50%;
- display: flex;
- flex-direction: column;
- justify-content: center;
- align-items: center;
- font-size: 26rpx;
-
- image {
- width: 66rpx;
- height: 66rpx;
- margin-bottom: 20rpx;
- }
- }
- }
- </style>
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