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| <template xlang="wxml" minapp="mpvue">
| <view class="tki-qrcode">
| <!-- #ifndef MP-ALIPAY -->
| <canvas class="tki-qrcode-canvas" :canvas-id="cid" :style="{width:cpSize+'px',height:cpSize+'px'}" />
| <!-- #endif -->
| <!-- #ifdef MP-ALIPAY -->
| <canvas :id="cid" :width="cpSize" :height="cpSize" class="tki-qrcode-canvas" />
| <!-- #endif -->
| <image v-show="show" :src="result" :style="{width:cpSize+'px',height:cpSize+'px'}" />
| </view>
| </template>
|
| <script>
| import QRCode from "./qrcode.js"
| let qrcode
| export default {
| name: "tki-qrcode",
| props: {
| cid: {
| type: String,
| default: 'tki-qrcode-canvas'
| },
| size: {
| type: Number,
| default: 200
| },
| unit: {
| type: String,
| default: 'upx'
| },
| show: {
| type: Boolean,
| default: true
| },
| val: {
| type: String,
| default: ''
| },
| background: {
| type: String,
| default: '#ffffff'
| },
| foreground: {
| type: String,
| default: '#000000'
| },
| pdground: {
| type: String,
| default: '#000000'
| },
| icon: {
| type: String,
| default: ''
| },
| iconSize: {
| type: Number,
| default: 40
| },
| lv: {
| type: Number,
| default: 3
| },
| onval: {
| type: Boolean,
| default: false
| },
| loadMake: {
| type: Boolean,
| default: false
| },
| usingComponents: {
| type: Boolean,
| default: true
| },
| showLoading: {
| type: Boolean,
| default: true
| },
| loadingText: {
| type: String,
| default: '二维码生成中'
| },
| },
| data() {
| return {
| result: '',
| }
| },
| methods: {
| _makeCode() {
| let that = this
| if (!this._empty(this.val)) {
| qrcode = new QRCode({
| context: that, // 上下文环境
| canvasId:that.cid, // canvas-id
| usingComponents: that.usingComponents, // 是否是自定义组件
| showLoading: that.showLoading, // 是否显示loading
| loadingText: that.loadingText, // loading文字
| text: that.val, // 生成内容
| size: that.cpSize, // 二维码大小
| background: that.background, // 背景色
| foreground: that.foreground, // 前景色
| pdground: that.pdground, // 定位角点颜色
| correctLevel: that.lv, // 容错级别
| image: that.icon, // 二维码图标
| imageSize: that.iconSize,// 二维码图标大小
| cbResult: function (res) { // 生成二维码的回调
| that._result(res)
| },
| });
| } else {
| uni.showToast({
| title: '二维码内容不能为空',
| icon: 'none',
| duration: 2000
| });
| }
| },
| _clearCode() {
| this._result('')
| qrcode.clear()
| },
| _saveCode() {
| let that = this;
| if (this.result != "") {
| uni.saveImageToPhotosAlbum({
| filePath: that.result,
| success: function () {
| uni.showToast({
| title: '二维码保存成功',
| icon: 'success',
| duration: 2000
| });
| }
| });
| }
| },
| _result(res) {
| this.result = res;
| this.$emit('result', res)
| },
| _empty(v) {
| let tp = typeof v,
| rt = false;
| if (tp == "number" && String(v) == "") {
| rt = true
| } else if (tp == "undefined") {
| rt = true
| } else if (tp == "object") {
| if (JSON.stringify(v) == "{}" || JSON.stringify(v) == "[]" || v == null) rt = true
| } else if (tp == "string") {
| if (v == "" || v == "undefined" || v == "null" || v == "{}" || v == "[]") rt = true
| } else if (tp == "function") {
| rt = false
| }
| return rt
| }
| },
| watch: {
| size: function (n, o) {
| if (n != o && !this._empty(n)) {
| this.cSize = n
| if (!this._empty(this.val)) {
| setTimeout(() => {
| this._makeCode()
| }, 100);
| }
| }
| },
| val: function (n, o) {
| if (this.onval) {
| if (n != o && !this._empty(n)) {
| setTimeout(() => {
| this._makeCode()
| }, 0);
| }
| }
| }
| },
| computed: {
| cpSize() {
| if(this.unit == "upx"){
| return uni.upx2px(this.size)
| }else{
| return this.size
| }
| }
| },
| mounted: function () {
| if (this.loadMake) {
| if (!this._empty(this.val)) {
| setTimeout(() => {
| this._makeCode()
| }, 0);
| }
| }
| },
| }
| </script>
| <style>
| .tki-qrcode {
| position: relative;
| }
| .tki-qrcode-canvas {
| position: fixed;
| top: -99999upx;
| left: -99999upx;
| z-index: -99999;
| }
| </style>
|
|
