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685 lines
26 KiB
685 lines
26 KiB
1 week ago
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<!-- ---------------------------------------------------------------------
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// uQRCode 二维码生成插件 v3.2.2
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//
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// uQRCode 是一款使用方式简单，高扩展的二维码生成插件。支持全端生成，支持canvas的地方就可以使用uQRCode。
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//
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// Copyright (c) Sansnn uQRCode All rights reserved.
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// Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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// 复制使用请保留本段注释，感谢支持开源！
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//
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// 开源地址：
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// https://github.com/Sansnn/uQRCode
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//
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// uni-app插件市场地址：
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// https://ext.dcloud.net.cn/plugin?id=1287
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--------------------------------------------------------------------- -->
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<template>
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<view class="u-qrcode" :style="{ width: `${size}px`, height: `${size}px` }">
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<!-- 画布 -->
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<!-- #ifndef MP-WEIXIN || APP-NVUE -->
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<canvas
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class="u-qrcode-canvas"
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:id="canvasId"
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:canvas-id="canvasId"
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:style="{
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width: `${templateOptions.canvasWidth}px`,
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height: `${templateOptions.canvasHeight}px`,
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transform: `scale(${size / templateOptions.canvasWidth}, ${size / templateOptions.canvasHeight})`
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}"
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@click="onClick"
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v-if="templateOptions.canvasDisplay"
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></canvas>
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<!-- #endif -->
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<!-- 微信小程序非2d模式不支持transform所以使用canvas2d -->
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<!-- #ifdef MP-WEIXIN -->
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<canvas
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class="u-qrcode-canvas"
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type="2d"
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:id="canvasId"
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:canvas-id="canvasId"
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:style="{
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width: `${templateOptions.canvasWidth}px`,
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height: `${templateOptions.canvasHeight}px`
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}"
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@click="onClick"
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v-if="templateOptions.canvasDisplay"
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></canvas>
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<!-- #endif -->
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<!-- nvue用gcanvas -->
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<!-- #ifdef APP-NVUE -->
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<gcanvas
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class="u-qrcode-canvas"
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ref="gcanvas"
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:style="{
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width: `${templateOptions.canvasWidth}px`,
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height: `${templateOptions.canvasWidth}px`
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}"
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@click="onClick"
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v-if="templateOptions.canvasDisplay"
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></gcanvas>
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<!-- #endif -->
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<!-- H5保存提示 -->
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<!-- #ifdef H5 -->
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<view class="uqrcode-h5-save" v-if="isH5Save">
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<image class="uqrcode-h5-save-image" :src="tempFilePath"></image>
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<text class="uqrcode-h5-save-text">若保存失败，请长按二维码进行保存</text>
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<view class="uqrcode-h5-save-close" @click="isH5Save = false">
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<view class="uqrcode-h5-save-close-before"></view>
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<view class="uqrcode-h5-save-close-after"></view>
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</view>
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</view>
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<!-- #endif -->
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<!-- 加载效果，可在此替换 -->
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<view class="u-qrcode-makeing" v-if="makeing">
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<image
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class="u-qrcode-makeing-image"
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:style="{ width: `${size / 4}px`, height: `${size / 4}px` }"
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src="data:image/gif;base64,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></image>
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</view>
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<!-- 错误处理，可在此替换 -->
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<view class="u-qrcode-error" v-if="inError"><text class="u-qrcode-error-message">Error, see console.</text></view>
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<!-- <view
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class="u-qrcode-canvas"
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style="background-color: rgba(243, 105, 59, 0.5);position: absolute;top: 0;left: 0;z-index: 999;"
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:style="{
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width: `${size}px`,
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height: `${size}px`
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}"
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v-if="templateOptions.canvasDisplay"
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></view> -->
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</view>
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</template>
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<script>
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/* 引入uQRCode核心js */
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import uQRCode from '../../js_sdk/u-qrcode';
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/* 引入nvue所需模块 */
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// #ifdef APP-NVUE
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import { enable, WeexBridge } from './gcanvas';
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let modal = weex.requireModule('modal');
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// #endif
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export default {
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name: 'uqrcode',
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props: {
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/**
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* canvas组件id
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*/
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canvasId: {
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type: String,
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required: true // canvasId在微信小程序初始值不能为空，created中赋值也不行，必须给一个值，否则挂载组件后无法绘制
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},
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/**
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* 二维码内容
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*/
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value: {
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type: [String, Number],
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required: true
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},
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/**
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* 二维码大小
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*/
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size: {
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type: [String, Number],
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default: 354
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},
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/**
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* 导出的文件类型
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*/
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fileType: {
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type: String,
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default: 'png'
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},
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/**
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* 选项
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*/
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options: {
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type: Object,
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default: () => {
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return {};
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}
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}
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},
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data() {
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return {
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canvas: undefined,
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canvasContext: undefined,
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makeDelegate: undefined,
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toTempFilePathDelegate: undefined,
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makeing: true,
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inError: false,
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isH5Save: false,
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tempFilePath: '',
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templateOptions: {
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canvasWidth: 0, // canvas宽度
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canvasHeight: 0,
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canvasDisplay: false
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},
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uqrcodeOptions: {
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text: ''
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}
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};
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},
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watch: {
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value: {
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handler() {
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this.remake();
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}
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},
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options: {
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handler() {
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this.remake();
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},
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deep: true
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},
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makeing: {
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handler(val) {
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if (!val) {
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if (typeof this.toTempFilePathDelegate === 'function') {
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this.toTempFilePathDelegate();
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}
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}
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}
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}
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},
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mounted() {
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this.templateOptions.canvasWidth = this.size;
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this.templateOptions.canvasHeight = this.size;
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this.$nextTick(() => {
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this.templateOptions.canvasDisplay = true;
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this.$nextTick(() => {
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this.make();
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});
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});
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},
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methods: {
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/**
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* 生成二维码
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*/
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make() {
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this.makeing = true;
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this.inError = false;
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if (!this.canvasId || !this.value) {
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if (!this.canvasId) {
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console.error('[uQRCode]: canvasId must be set!');
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}
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if (!this.value) {
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console.error('[uQRCode]: value must be set!');
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}
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this.inError = true;
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this.complete(false);
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clearTimeout(this.makeDelegate);
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return;
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}
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/* 高频重绘节流 */
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clearTimeout(this.makeDelegate);
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this.makeDelegate = setTimeout(() => {
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/* 组件数据 */
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this.templateOptions = this.getTemplateOptions();
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/* uQRCode选项 */
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this.uqrcodeOptions = this.getUqrcodeOptions();
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/* 纠错等级兼容字母写法 */
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if (typeof this.uqrcodeOptions.errorCorrectLevel === 'string') {
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this.uqrcodeOptions.errorCorrectLevel = uQRCode.errorCorrectLevel[this.uqrcodeOptions.errorCorrectLevel];
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}
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/* nvue不支持动态修改gcanvas尺寸，除nvue外，默认使用useDynamicSize */
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// #ifndef APP-NVUE
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if (typeof this.options.useDynamicSize === 'undefined') {
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this.uqrcodeOptions.useDynamicSize = true;
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}
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// #endif
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// #ifdef APP-NVUE
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this.uqrcodeOptions.useDynamicSize = false;
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// #endif
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||
|
|
|
||
|
|
// #ifndef MP-WEIXIN || APP-NVUE
|
||
|
|
/* uniapp获取canvas实例方式 */
|
||
|
|
const ctx = (this.canvasContext = uni.createCanvasContext(this.canvasId, this));
|
||
|
|
/* uniapp获取图像方式 */
|
||
|
|
const loadImage = function(src) {
|
||
|
|
return new Promise((resolve, reject) => {
|
||
|
|
uni.getImageInfo({
|
||
|
|
src,
|
||
|
|
success: res => {
|
||
|
|
resolve(res.path);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
});
|
||
|
|
};
|
||
|
|
|
||
|
|
/* 实例化uQRCode：uQRCode选项参数, canvas实例, loadImage方法 */
|
||
|
|
let uqrcode = new uQRCode(this.uqrcodeOptions, ctx, loadImage);
|
||
|
|
/* 调用uqrcode方法 */
|
||
|
|
uqrcode.make();
|
||
|
|
|
||
|
|
/* 使用dynamicSize，可以解决小块间出现白线问题，再通过scale缩放至size，使其达到所设尺寸 */
|
||
|
|
this.templateOptions.canvasWidth = uqrcode.options.dynamicSize;
|
||
|
|
this.templateOptions.canvasHeight = uqrcode.options.dynamicSize;
|
||
|
|
|
||
|
|
/* 等待canvas重新渲染和节流，并以最后一次重绘为准 */
|
||
|
|
this.makeDelegate = setTimeout(() => {
|
||
|
|
uqrcode
|
||
|
|
.draw()
|
||
|
|
.then(() => {
|
||
|
|
this.complete(true);
|
||
|
|
})
|
||
|
|
.catch(() => {
|
||
|
|
this.complete(false);
|
||
|
|
});
|
||
|
|
}, 150);
|
||
|
|
// #endif
|
||
|
|
|
||
|
|
// #ifdef MP-WEIXIN
|
||
|
|
/* 因为是回调的原因，高频率重绘会出现问题 */
|
||
|
|
if (!this.templateOptions.canvasDisplay) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
/* 微信小程序获取canvas实例方式 */
|
||
|
|
uni
|
||
|
|
.createSelectorQuery()
|
||
|
|
.in(this) // 在组件内使用需要
|
||
|
|
.select(`#${this.canvasId}`)
|
||
|
|
.fields({
|
||
|
|
node: true,
|
||
|
|
size: true
|
||
|
|
})
|
||
|
|
.exec(res => {
|
||
|
|
/* 因为是回调的原因，高频率重绘会出现问题 */
|
||
|
|
if (!this.templateOptions.canvasDisplay) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
const canvas = (this.canvas = res[0].node);
|
||
|
|
const ctx = (this.canvasContext = canvas.getContext('2d'));
|
||
|
|
/* 微信小程序获取图像方式 */
|
||
|
|
const loadImage = function(src) {
|
||
|
|
/* 小程序下获取网络图片信息需先配置download域名白名单才能生效 */
|
||
|
|
return new Promise((resolve, reject) => {
|
||
|
|
const img = canvas.createImage();
|
||
|
|
img.src = src;
|
||
|
|
img.onload = () => {
|
||
|
|
resolve(img);
|
||
|
|
};
|
||
|
|
});
|
||
|
|
};
|
||
|
|
const dpr = uni.getSystemInfoSync().pixelRatio;
|
||
|
|
|
||
|
|
/* 实例化uQRCode：uQRCode选项参数, canvas实例, loadImage方法（微信小程序使用的是canvas2d，不能直接用src，得转成img对象才能使用drawImage） */
|
||
|
|
let uqrcode = new uQRCode(this.uqrcodeOptions, ctx, loadImage);
|
||
|
|
/* 调用uqrcode方法 */
|
||
|
|
uqrcode.make();
|
||
|
|
|
||
|
|
/* 2d的组件设置宽高与实际canvas绘制宽高不是一个,打个比方,组件size=200,canvas.width设置为100,那么绘制出来就是100=200,组件size=400,canvas.width设置为800,绘制大小还是800=400,所以无需理会下方返回的dynamicSize是多少,按dpr重新赋值给canvas即可 */
|
||
|
|
this.templateOptions.canvasWidth = uqrcode.options.size;
|
||
|
|
this.templateOptions.canvasHeight = uqrcode.options.size;
|
||
|
|
/* 使用dynamicSize+scale，可以解决小块间出现白线问题，dpr可以解决模糊问题 */
|
||
|
|
canvas.width = uqrcode.options.dynamicSize * dpr;
|
||
|
|
canvas.height = uqrcode.options.dynamicSize * dpr;
|
||
|
|
ctx.scale(dpr, dpr);
|
||
|
|
|
||
|
|
/* 等待canvas重新渲染和节流，并以最后一次重绘为准 */
|
||
|
|
this.makeDelegate = setTimeout(() => {
|
||
|
|
uqrcode
|
||
|
|
.draw()
|
||
|
|
.then(() => {
|
||
|
|
this.complete(true);
|
||
|
|
})
|
||
|
|
.catch(() => {
|
||
|
|
this.complete(false);
|
||
|
|
});
|
||
|
|
}, 150);
|
||
|
|
});
|
||
|
|
// #endif
|
||
|
|
|
||
|
|
// #ifdef APP-NVUE
|
||
|
|
/* 获取元素引用 */
|
||
|
|
const gcanvas = this.$refs['gcanvas'];
|
||
|
|
/* 通过元素引用获取canvas对象 */
|
||
|
|
const canvas = enable(gcanvas, {
|
||
|
|
bridge: WeexBridge
|
||
|
|
});
|
||
|
|
/* 获取绘图所需的上下文，目前不支持3d */
|
||
|
|
const ctx = (this.canvasContext = canvas.getContext('2d'));
|
||
|
|
/* nvue获取图像方式 */
|
||
|
|
const loadImage = function(src) {
|
||
|
|
return new Promise((resolve, reject) => {
|
||
|
|
/* getImageInfo在nvue的bug：获取同一个路径的图片信息，同一时间第一次获取成功，后续失败，猜测是写入本地时产生文件写入冲突，所以没有返回，特别是对于网络资源 --- js部分已实现队列绘制，已解决此问题 */
|
||
|
|
uni.getImageInfo({
|
||
|
|
src,
|
||
|
|
success: res => {
|
||
|
|
resolve(res.path);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
});
|
||
|
|
};
|
||
|
|
|
||
|
|
/* 实例化uQRCode：uQRCode选项参数, canvas实例, loadImage方法 */
|
||
|
|
let uqrcode = new uQRCode(this.uqrcodeOptions, ctx, loadImage);
|
||
|
|
/* 调用uqrcode方法 */
|
||
|
|
uqrcode.make();
|
||
|
|
|
||
|
|
/* 等待canvas重新渲染和节流，并以最后一次重绘为准 */
|
||
|
|
this.makeDelegate = setTimeout(() => {
|
||
|
|
uqrcode
|
||
|
|
.draw()
|
||
|
|
.then(() => {
|
||
|
|
this.complete(true);
|
||
|
|
})
|
||
|
|
.catch(() => {
|
||
|
|
this.complete(false);
|
||
|
|
});
|
||
|
|
}, 150);
|
||
|
|
// #endif
|
||
|
|
}, 300);
|
||
|
|
},
|
||
|
|
/**
|
||
|
|
* 生成完成
|
||
|
|
*/
|
||
|
|
complete(success = true) {
|
||
|
|
setTimeout(() => {
|
||
|
|
this.makeing = false;
|
||
|
|
this.$emit('complete', {
|
||
|
|
success
|
||
|
|
});
|
||
|
|
}, 150);
|
||
|
|
},
|
||
|
|
/**
|
||
|
|
* 重新生成
|
||
|
|
*/
|
||
|
|
remake() {
|
||
|
|
this.resetCanvas(() => {
|
||
|
|
this.make();
|
||
|
|
});
|
||
|
|
},
|
||
|
|
/**
|
||
|
|
* 重置画布
|
||
|
|
*/
|
||
|
|
resetCanvas(callback) {
|
||
|
|
this.templateOptions.canvasDisplay = false;
|
||
|
|
this.$nextTick(() => {
|
||
|
|
this.templateOptions.canvasDisplay = true;
|
||
|
|
this.$nextTick(() => {
|
||
|
|
callback && callback();
|
||
|
|
});
|
||
|
|
});
|
||
|
|
},
|
||
|
|
/**
|
||
|
|
* 注册click事件
|
||
|
|
*/
|
||
|
|
onClick(e) {
|
||
|
|
this.$emit('click', e);
|
||
|
|
},
|
||
|
|
getTemplateOptions() {
|
||
|
|
return uQRCode.deepReplace(this.templateOptions, {
|
||
|
|
width: this.size,
|
||
|
|
height: this.size
|
||
|
|
});
|
||
|
|
},
|
||
|
|
getUqrcodeOptions() {
|
||
|
|
return uQRCode.deepReplace(this.options, {
|
||
|
|
text: this.value,
|
||
|
|
size: this.size
|
||
|
|
});
|
||
|
|
},
|
||
|
|
/**
|
||
|
|
* 导出临时路径
|
||
|
|
*/
|
||
|
|
toTempFilePath(callback = {}) {
|
||
|
|
if (typeof callback.success != 'function') {
|
||
|
|
callback.success = () => {};
|
||
|
|
}
|
||
|
|
if (typeof callback.fail != 'function') {
|
||
|
|
callback.fail = () => {};
|
||
|
|
}
|
||
|
|
if (typeof callback.complete != 'function') {
|
||
|
|
callback.complete = () => {};
|
||
|
|
}
|
||
|
|
|
||
|
|
if (this.makeing) {
|
||
|
|
/* 如果还在生成状态，那当前操作将托管到委托，监听生成完成后再通过委托复调当前方法 */
|
||
|
|
this.toTempFilePathDelegate = () => {
|
||
|
|
this.toTempFilePath(callback);
|
||
|
|
};
|
||
|
|
return;
|
||
|
|
} else {
|
||
|
|
this.toTempFilePathDelegate = null;
|
||
|
|
}
|
||
|
|
|
||
|
|
// #ifndef MP-WEIXIN || APP-NVUE
|
||
|
|
uni.canvasToTempFilePath(
|
||
|
|
{
|
||
|
|
canvasId: this.canvasId,
|
||
|
|
fileType: this.fileType,
|
||
|
|
width: this.templateOptions.canvasWidth,
|
||
|
|
height: this.templateOptions.canvasHeight,
|
||
|
|
success: res => {
|
||
|
|
callback.success(res);
|
||
|
|
},
|
||
|
|
fail: err => {
|
||
|
|
callback.fail(err);
|
||
|
|
},
|
||
|
|
complete: () => {
|
||
|
|
callback.complete();
|
||
|
|
}
|
||
|
|
},
|
||
|
|
this
|
||
|
|
);
|
||
|
|
// #endif
|
||
|
|
|
||
|
|
// #ifdef MP-WEIXIN
|
||
|
|
/* 需要将 data:image/png;base64, 这段去除 writeFile 才能正常打开文件，否则是损坏文件，无法打开*/
|
||
|
|
const reg = new RegExp('^data:image/png;base64,', 'g');
|
||
|
|
const dataURL = this.canvas.toDataURL().replace(reg, '');
|
||
|
|
const fs = wx.getFileSystemManager();
|
||
|
|
const tempFilePath = `${wx.env.USER_DATA_PATH}/${new Date().getTime()}${
|
||
|
|
Math.random()
|
||
|
|
.toString()
|
||
|
|
.split('.')[1]
|
||
|
|
}.png`;
|
||
|
|
fs.writeFile({
|
||
|
|
filePath: tempFilePath, // 要写入的文件路径 (本地路径)
|
||
|
|
data: dataURL, // base64图片
|
||
|
|
encoding: 'base64',
|
||
|
|
success: res => {
|
||
|
|
callback.success({
|
||
|
|
tempFilePath
|
||
|
|
});
|
||
|
|
},
|
||
|
|
fail: err => {
|
||
|
|
callback.fail(err);
|
||
|
|
},
|
||
|
|
complete: () => {
|
||
|
|
callback.complete();
|
||
|
|
}
|
||
|
|
});
|
||
|
|
// #endif
|
||
|
|
|
||
|
|
// #ifdef APP-NVUE
|
||
|
|
/* 测试过程中，size需要乘以3才能保存完整，3又对应dpr，猜测是与像素比有关，故乘以3。第一次运行无法保存，后续正常，待排查。 */
|
||
|
|
const dpr = uni.getSystemInfoSync().pixelRatio;
|
||
|
|
this.canvasContext.toTempFilePath(0, 0, this.size * dpr, this.size * dpr, this.size * dpr, this.size * dpr, '', 1, res => {
|
||
|
|
callback.success(res);
|
||
|
|
callback.complete(res);
|
||
|
|
});
|
||
|
|
// #endif
|
||
|
|
},
|
||
|
|
/**
|
||
|
|
* 保存
|
||
|
|
*/
|
||
|
|
save(callback = {}) {
|
||
|
|
if (typeof callback.success != 'function') {
|
||
|
|
callback.success = () => {};
|
||
|
|
}
|
||
|
|
if (typeof callback.fail != 'function') {
|
||
|
|
callback.fail = () => {};
|
||
|
|
}
|
||
|
|
if (typeof callback.complete != 'function') {
|
||
|
|
callback.complete = () => {};
|
||
|
|
}
|
||
|
|
|
||
|
|
this.toTempFilePath({
|
||
|
|
success: res => {
|
||
|
|
console.log(res);
|
||
|
|
// #ifndef H5
|
||
|
|
uni.saveImageToPhotosAlbum({
|
||
|
|
filePath: res.tempFilePath,
|
||
|
|
success: res1 => {
|
||
|
|
callback.success(res1);
|
||
|
|
},
|
||
|
|
fail: err1 => {
|
||
|
|
callback.fail(err1);
|
||
|
|
},
|
||
|
|
complete: () => {
|
||
|
|
callback.complete();
|
||
|
|
}
|
||
|
|
});
|
||
|
|
// #endif
|
||
|
|
|
||
|
|
// #ifdef H5
|
||
|
|
/* 可以在电脑浏览器下载，移动端iOS不行，安卓微信浏览器不行，安卓外部浏览器可以 */
|
||
|
|
this.isH5Save = true;
|
||
|
|
this.tempFilePath = res.tempFilePath;
|
||
|
|
const aEle = document.createElement('a');
|
||
|
|
aEle.download = 'uQRCode'; // 设置下载的文件名，默认是'下载'
|
||
|
|
aEle.href = res.tempFilePath;
|
||
|
|
document.body.appendChild(aEle);
|
||
|
|
aEle.click();
|
||
|
|
aEle.remove(); // 下载之后把创建的元素删除
|
||
|
|
callback.success({
|
||
|
|
errMsg: 'ok'
|
||
|
|
});
|
||
|
|
callback.complete();
|
||
|
|
// #endif
|
||
|
|
},
|
||
|
|
fail: err => {
|
||
|
|
callback.fail(err);
|
||
|
|
callback.complete();
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<style>
|
||
|
|
.u-qrcode {
|
||
|
|
position: relative;
|
||
|
|
}
|
||
|
|
|
||
|
|
.u-qrcode-canvas {
|
||
|
|
position: absolute;
|
||
|
|
top: 0;
|
||
|
|
right: 0;
|
||
|
|
bottom: 0;
|
||
|
|
left: 0;
|
||
|
|
transform-origin: top left;
|
||
|
|
}
|
||
|
|
|
||
|
|
.u-qrcode-makeing {
|
||
|
|
position: absolute;
|
||
|
|
top: 0;
|
||
|
|
right: 0;
|
||
|
|
bottom: 0;
|
||
|
|
left: 0;
|
||
|
|
/* #ifndef APP-NVUE */
|
||
|
|
display: flex;
|
||
|
|
/* #endif */
|
||
|
|
justify-content: center;
|
||
|
|
align-items: center;
|
||
|
|
}
|
||
|
|
|
||
|
|
.u-qrcode-makeing-image {
|
||
|
|
/* #ifndef APP-NVUE */
|
||
|
|
display: block;
|
||
|
|
max-width: 120px;
|
||
|
|
max-height: 120px;
|
||
|
|
/* #endif */
|
||
|
|
}
|
||
|
|
|
||
|
|
.u-qrcode-error {
|
||
|
|
position: absolute;
|
||
|
|
top: 0;
|
||
|
|
right: 0;
|
||
|
|
bottom: 0;
|
||
|
|
left: 0;
|
||
|
|
/* #ifndef APP-NVUE */
|
||
|
|
display: flex;
|
||
|
|
/* #endif */
|
||
|
|
justify-content: center;
|
||
|
|
align-items: center;
|
||
|
|
}
|
||
|
|
|
||
|
|
.u-qrcode-error-message {
|
||
|
|
font-size: 12px;
|
||
|
|
color: #939291;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* #ifdef H5 */
|
||
|
|
.uqrcode-h5-save {
|
||
|
|
position: fixed;
|
||
|
|
top: 0;
|
||
|
|
right: 0;
|
||
|
|
bottom: 0;
|
||
|
|
left: 0;
|
||
|
|
z-index: 100;
|
||
|
|
background-color: rgba(0, 0, 0, 0.68);
|
||
|
|
display: flex;
|
||
|
|
flex-direction: column;
|
||
|
|
justify-content: center;
|
||
|
|
align-items: center;
|
||
|
|
}
|
||
|
|
|
||
|
|
.uqrcode-h5-save-image {
|
||
|
|
width: 512rpx;
|
||
|
|
height: 512rpx;
|
||
|
|
padding: 32rpx;
|
||
|
|
}
|
||
|
|
|
||
|
|
.uqrcode-h5-save-text {
|
||
|
|
margin-top: 20rpx;
|
||
|
|
font-size: 32rpx;
|
||
|
|
font-weight: 700;
|
||
|
|
color: #ffffff;
|
||
|
|
}
|
||
|
|
|
||
|
|
.uqrcode-h5-save-close {
|
||
|
|
position: relative;
|
||
|
|
margin-top: 72rpx;
|
||
|
|
width: 40rpx;
|
||
|
|
height: 40rpx;
|
||
|
|
border: 2rpx solid #ffffff;
|
||
|
|
border-radius: 40rpx;
|
||
|
|
padding: 10rpx;
|
||
|
|
}
|
||
|
|
|
||
|
|
.uqrcode-h5-save-close-before {
|
||
|
|
position: absolute;
|
||
|
|
top: 50%;
|
||
|
|
transform: translateY(-50%) rotate(45deg);
|
||
|
|
width: 40rpx;
|
||
|
|
height: 4rpx;
|
||
|
|
background: #ffffff;
|
||
|
|
}
|
||
|
|
|
||
|
|
.uqrcode-h5-save-close-after {
|
||
|
|
position: absolute;
|
||
|
|
top: 50%;
|
||
|
|
transform: translateY(-50%) rotate(-45deg);
|
||
|
|
width: 40rpx;
|
||
|
|
height: 4rpx;
|
||
|
|
background: #ffffff;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* #endif */
|
||
|
|
</style>
|