<template>
<view class="uqrcode" :class="{ 'uqrcode-hide': hide }" :style="{ width: `${templateOptions.width}px`, height: `${templateOptions.height}px` }">
<view class="uqrcode-canvas-wrapper">
<!-- 画布 -->
<!-- #ifndef APP-NVUE -->
<canvas class="uqrcode-canvas" :id="canvasId" :canvas-id="canvasId" :type="canvasType" :style="{
width: `${templateOptions.canvasWidth}px`,
height: `${templateOptions.canvasHeight}px`,
transform: templateOptions.canvasTransform
}" v-if="templateOptions.canvasDisplay" @click="onClick"></canvas>
<!-- #endif -->
<!-- nvue用gcanvas -->
<!-- #ifdef APP-NVUE -->
<gcanvas class="uqrcode-canvas" ref="gcanvas" :style="{
width: `${templateOptions.canvasWidth}px`,
height: `${templateOptions.canvasHeight}px`
}" v-if="templateOptions.canvasDisplay" @click="onClick"></gcanvas>
<!-- #endif -->
</view>
<!-- 加载效果 -->
<view class="uqrcode-makeing" v-if="loading === undefined ? makeing : loading">
<slot name="loading">
<image class="uqrcode-makeing-image" :style="{ width: `${templateOptions.size / 4}px`, height: `${templateOptions.size / 4}px` }"
src="data:image/gif;base64,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">
</image>
</slot>
</view>
<!-- 错误处理 -->
<view class="uqrcode-error" v-if="isError" @click="onClick">
<slot name="error" :error="error">
<text class="uqrcode-error-message">{{ error.errMsg }}</text>
</slot>
</view>
<!-- H5保存提示 -->
<!-- #ifdef H5 -->
<view class="uqrcode-h5-save" v-if="isH5Save">
<slot name="h5save" :tempFilePath="tempFilePath">
<image class="uqrcode-h5-save-image" :src="tempFilePath"></image>
<text class="uqrcode-h5-save-text">{{ h5SaveIsDownload ? '若保存失败，' : '' }}请长按二维码进行保存</text>
</slot>
<view class="uqrcode-h5-save-close" @click.stop="isH5Save = false">
<view class="uqrcode-h5-save-close-before"></view>
<view class="uqrcode-h5-save-close-after"></view>
</view>
</view>
<!-- #endif -->
</view>
</template>
<script>
// #ifdef VUE3
import {
toRaw
} from 'vue';
// #endif
/* 引入uQRCode核心js */
import UQRCode from '../../js_sdk/uqrcode/uqrcode';
/* 引入nvue所需模块 */
// #ifdef APP-NVUE
import {
enable,
WeexBridge
} from '../../js_sdk/gcanvas';
const modal = weex.requireModule('modal');
// #endif
/* 引入队列 */
import {
queueDraw,
queueLoadImage
} from '../../common/queue';
/* 引入缓存图片 */
import {
cacheImageList
} from '../../common/cache';
let instance = null;
export default {
name: 'uqrcode',
props: {
/**
* canvas组件id
*/
canvasId: {
type: String,
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。不考虑用随机id，uuid
},
/**
* 二维码内容
*/
value: {
type: [String, Number]
},
/**
* 选项
*/
options: {
type: Object,
default: () => {
return {};
}
},
/**
* 二维码大小
*/
size: {
type: [String, Number],
default: 200
},
/**
* 二维码尺寸单位
*/
sizeUnit: {
type: String,
default: 'px'
},
/**
* 导出的文件类型
*/
fileType: {
type: String,
default: 'png'
},
/**
* 是否初始化组件后就开始生成
*/
start: {
type: Boolean,
default: true
},
/**
* 是否数据发生改变自动重绘
*/
auto: {
type: Boolean,
default: true
},
/**
* 隐藏组件
*/
hide: {
type: Boolean,
default: false
},
/**
* canvas 类型，微信小程序默认使用2d，非2d微信官方已放弃维护，问题比较多
* 注意：微信小程序type2d手机上正常，PC上微信内打开小程序toDataURL报错，看后期微信官方团队会不会做兼容，不兼容的话只能在自行判断在PC使用非2d，或者直接提示用户请在手机上操作，微信团队的海报中心小程序就是这么做的
*/
type: {
type: String,
default: () => {
// #ifdef MP-WEIXIN
return '2d';
// #endif
// #ifndef MP-WEIXIN
return 'normal';
// #endif
}
},
/**
* 队列绘制，主要针对NVue端
*/
queue: {
type: Boolean,
default: false
},
/**
* 是否队列加载图片，可减少canvas发起的网络资源请求，节省服务器资源
*/
isQueueLoadImage: {
type: Boolean,
default: false
},
/**
* loading态
*/
loading: {
type: Boolean,
default: undefined
},
/**
* H5保存即自动下载（在支持的环境下），默认false为仅弹层提示用户需要长按图片保存，不会自动下载
*/
h5SaveIsDownload: {
type: Boolean,
default: false
},
/**
* H5下载名称
*/
h5DownloadName: {
type: String,
default: 'uQRCode'
}
},
data() {
return {
canvas: undefined,
canvasType: undefined,
canvasContext: undefined,
makeDelegate: undefined,
drawDelegate: undefined,
toTempFilePathDelegate: undefined,
makeExecuted: false,
makeing: false,
drawing: false,
isError: false,
error: undefined,
isH5Save: false,
tempFilePath: '',
templateOptions: {
size: 0,
width: 0, // 组件宽度
height: 0,
canvasWidth: 0, // canvas宽度
canvasHeight: 0,
canvasTransform: '',
canvasDisplay: false
},
uqrcodeOptions: {
data: ''
},
plugins: [],
makeingPattern: [
[
[true, true, true, false, false, false, false, true, true, true],
[true, true, true, false, false, false, false, true, true, true],
[true, true, true, false, false, false, false, true, true, true],
[true, true, true, false, false, false, false, true, true, true],
[true, true, true, false, false, false, false, true, true, true],
[true, true, true, false, false, false, false, true, true, true],
[true, true, true, false, false, false, false, true, true, true],
[true, true, true, true, true, true, true, true, true, true],
[true, true, true, true, true, true, true, true, true, true],
[true, true, true, true, true, true, true, true, true, true]
],
[
[true, true, true, true, true, true, true, true, true, true],
[true, true, true, true, true, true, true, true, true, true],
[true, true, true, true, true, true, true, true, true, true],
[true, true, true, false, false, false, false, true, true, true],
[true, true, true, false, false, false, false, true, true, true],
[true, true, true, false, false, false, false, true, true, true],
[true, true, true, false, false, false, false, false, false, false],
[true, true, true, true, true, true, false, true, true, true],
[true, true, true, true, true, true, false, true, true, true],
[true, true, true, true, true, true, false, true, true, true]
],
[
[true, true, true, true, true, true, true, true, true, true],
[true, true, true, true, true, true, true, true, true, true],
[true, true, true, true, true, true, true, true, true, true],
[true, true, true, false, false, false, false, true, true, true],
[true, true, true, false, false, false, false, true, true, true],
[true, true, true, true, true, true, true, false, false, false],
[true, true, true, true, true, true, true, false, false, false],
[true, true, true, true, true, true, true, false, false, false],
[true, true, true, false, false, false, false, true, true, true],
[true, true, true, false, false, false, false, true, true, true]
],
[
[true, true, true, true, true, true, true, true, true, true],
[true, true, true, true, true, true, true, true, true, true],
[true, true, true, true, true, true, true, true, true, true],
[true, true, true, false, false, false, false, false, false, false],
[true, true, true, false, false, false, false, false, false, false],
[true, true, true, false, false, false, false, false, false, false],
[true, true, true, false, false, false, false, false, false, false],
[true, true, true, true, true, true, true, true, true, true],
[true, true, true, true, true, true, true, true, true, true],
[true, true, true, true, true, true, true, true, true, true]
]
]
};
},
watch: {
type: {
handler(val) {
const types = ['2d'];
if (types.includes(val)) {
this.canvasType = val;
} else {
this.canvasType = undefined;
}
},
immediate: true
},
value: {
handler() {
if (this.auto) {
this.remake();
}
}
},
size: {
handler() {
if (this.auto) {
this.remake();
}
}
},
options: {
handler() {
if (this.auto) {
this.remake();
}
},
deep: true
},
makeing: {
handler(val) {
if (!val) {
if (typeof this.toTempFilePathDelegate === 'function') {
this.toTempFilePathDelegate();
}
}
}
}
},
mounted() {
this.templateOptions.size = this.sizeUnit == 'rpx' ? uni.upx2px(this.size) : this.size;
this.templateOptions.width = this.templateOptions.size;
this.templateOptions.height = this.templateOptions.size;
this.templateOptions.canvasWidth = this.templateOptions.size;
this.templateOptions.canvasHeight = this.templateOptions.size;
if (this.canvasType == '2d') {
// #ifndef MP-WEIXIN
this.templateOptions.canvasTransform = `scale(${this.templateOptions.size / this.templateOptions.canvasWidth}, ${this.templateOptions.size /
this.templateOptions.canvasHeight})`;
// #endif
} else {
this.templateOptions.canvasTransform = `scale(${this.templateOptions.size / this.templateOptions.canvasWidth}, ${this.templateOptions.size /
this.templateOptions.canvasHeight})`;
}
if (this.start) {
this.make();
}
},
methods: {
/**
* 获取模板选项
*/
getTemplateOptions() {
var size = this.sizeUnit == 'rpx' ? uni.upx2px(this.size) : this.size;
return deepReplace(this.templateOptions, {
size,
width: size,
height: size
});
},
/**
* 获取插件选项
*/
getUqrcodeOptions() {
return deepReplace(this.options, {
data: String(this.value),
size: Number(this.templateOptions.size)
});
},
/**
* 重置画布
*/
resetCanvas(callback) {
this.templateOptions.canvasDisplay = false;
this.$nextTick(() => {
this.templateOptions.canvasDisplay = true;
this.$nextTick(() => {
callback && callback();
});
});
},
/**
* 绘制二维码
*/
async draw(callback = {}, isDrawDelegate = false) {
if (typeof callback.success != 'function') {
callback.success = () => {};
}
if (typeof callback.fail != 'function') {
callback.fail = () => {};
}
if (typeof callback.complete != 'function') {
callback.complete = () => {};
}
if (this.drawing) {
if (!isDrawDelegate) {
this.drawDelegate = () => {
this.draw(callback, true);
};
return;
}
} else {
this.drawing = true;
}
if (!this.canvasId) {
console.error('[uQRCode]: canvasId must be set!');
this.isError = true;
this.drawing = false;
callback.fail({
errMsg: '[uQRCode]: canvasId must be set!'
});
callback.complete({
errMsg: '[uQRCode]: canvasId must be set!'
});
return;
}
if (!this.value) {
console.error('[uQRCode]: value must be set!');
this.isError = true;
this.drawing = false;
callback.fail({
errMsg: '[uQRCode]: value must be set!'
});
callback.complete({
errMsg: '[uQRCode]: value must be set!'
});
return;
}
/* 组件数据 */
this.templateOptions = this.getTemplateOptions();
/* uQRCode选项 */
this.uqrcodeOptions = this.getUqrcodeOptions();
/* 纠错等级兼容字母写法 */
if (typeof this.uqrcodeOptions.errorCorrectLevel === 'string') {
this.uqrcodeOptions.errorCorrectLevel = UQRCode.errorCorrectLevel[this.uqrcodeOptions.errorCorrectLevel];
}
/* nvue不支持动态修改gcanvas尺寸，除nvue外，默认使用useDynamicSize */
// #ifndef APP-NVUE
if (typeof this.options.useDynamicSize === 'undefined') {
this.uqrcodeOptions.useDynamicSize = true;
}
// #endif
// #ifdef APP-NVUE
if (typeof this.options.useDynamicSize === 'undefined') {
this.uqrcodeOptions.useDynamicSize = false;
}
// if (typeof this.options.drawReserve === 'undefined') {
// this.uqrcodeOptions.drawReserve = true;
// }
// #endif
/* 获取uQRCode实例 */
const qr = instance = new UQRCode();
/* 注册扩展 */
this.plugins.forEach(p => qr.register(p.plugin));
/* 设置uQRCode选项 */
qr.setOptions(this.uqrcodeOptions);
/* 调用制作二维码方法 */
qr.make();
/* 获取canvas上下文 */
let canvasContext = null;
// #ifndef APP-NVUE
if (this.canvasType === '2d') {
// #ifdef MP-WEIXIN
/* 微信小程序获取canvas2d上下文方式 */
const canvas = (this.canvas = await new Promise(resolve => {
uni
.createSelectorQuery()
.in(this) // 在组件内使用需要
.select(`#${this.canvasId}`)
.fields({
node: true,
size: true
})
.exec(res => {
resolve(res[0].node);
});
}));
canvasContext = this.canvasContext = canvas.getContext('2d');
/* 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 = qr.size;
this.templateOptions.canvasHeight = qr.size;
this.templateOptions.canvasTransform = '';
/* 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 */
const dpr = uni.getSystemInfoSync().pixelRatio;
canvas.width = qr.dynamicSize * dpr;
canvas.height = qr.dynamicSize * dpr;
canvasContext.scale(dpr, dpr);
/* 微信小程序获取图像方式 */
qr.loadImage = this.getLoadImage(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);
};
img.onerror = err => {
reject(err);
};
});
});
// #endif
// #ifndef MP-WEIXIN
/* 非微信小程序不支持2d，切换回uniapp获取canvas上下文方式 */
canvasContext = this.canvasContext = uni.createCanvasContext(this.canvasId, this);
/* 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 = qr.dynamicSize;
this.templateOptions.canvasHeight = qr.dynamicSize;
this.templateOptions.canvasTransform = `scale(${this.templateOptions.size / this.templateOptions.canvasWidth}, ${this.templateOptions.size /
this.templateOptions.canvasHeight})`;
/* uniapp获取图像方式 */
qr.loadImage = this.getLoadImage(function(src) {
return new Promise((resolve, reject) => {
if (src.startsWith('http')) {
uni.getImageInfo({
src,
success: res => {
resolve(res.path);
},
fail: err => {
reject(err);
}
});
} else {
if (src.startsWith('.')) {
console.error('[uQRCode]: 本地图片路径仅支持绝对路径！');
throw new Error('[uQRCode]: local image path only supports absolute path!');
} else {
resolve(src);
}
}
});
});
// #endif
} else {
/* uniapp获取canvas上下文方式 */
canvasContext = this.canvasContext = uni.createCanvasContext(this.canvasId, this);
/* 使用dynamicSize，可以解决小块间出现白线问题，再通过scale缩放至size，使其达到所设尺寸 */
this.templateOptions.canvasWidth = qr.dynamicSize;
this.templateOptions.canvasHeight = qr.dynamicSize;
this.templateOptions.canvasTransform = `scale(${this.templateOptions.size / this.templateOptions.canvasWidth}, ${this.templateOptions.size /
this.templateOptions.canvasHeight})`;
/* uniapp获取图像方式 */
qr.loadImage = this.getLoadImage(function(src) {
return new Promise((resolve, reject) => {
/* getImageInfo在微信小程序的bug：本地路径返回路径会把开头的/或../移除，导致路径错误，解决方法：限制只能使用绝对路径 */
if (src.startsWith('http')) {
uni.getImageInfo({
src,
success: res => {
resolve(res.path);
},
fail: err => {
reject(err);
}
});
} else {
if (src.startsWith('.')) {
console.error('[uQRCode]: 本地图片路径仅支持绝对路径！');
throw new Error('[uQRCode]: local image path only supports absolute path!');
} else {
resolve(src);
}
}
});
});
}
// #endif
// #ifdef APP-NVUE
/* NVue获取canvas上下文方式 */
const gcanvas = this.$refs['gcanvas'];
const canvas = enable(gcanvas, {
bridge: WeexBridge
});
canvasContext = this.canvasContext = canvas.getContext('2d');
/* NVue获取图像方式 */
qr.loadImage = this.getLoadImage(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 --- 已实现队列绘制，已解决此问题 */
if (src.startsWith('.')) {
console.error('[uQRCode]: 本地图片路径仅支持绝对路径！');
throw new Error('[uQRCode]: local image path only supports absolute path!');
} else {
uni.getImageInfo({
src,
success: res => {
resolve(res.path);
},
fail: err => {
reject(err);
}
});
}
});
});
// #endif
/* 设置uQRCode实例的canvas上下文 */
qr.canvasContext = canvasContext;
/* 延时等待页面重新绘制完毕 */
setTimeout(() => {
/* 从插件获取具体要调用哪一个扩展函数 */
var plugin = this.plugins.find(p => p.name == qr.style);
var drawCanvasName = plugin ? plugin.drawCanvas : 'drawCanvas';
/* 虽然qr[drawCanvasName]是直接返回Promise的，但由于js内部this指向问题，故不能直接exec(qr[drawCanvasName])此方式执行，需要改成exec(() => qr[drawCanvasName]())才能正确获取this */
var drawCanvas;
if (this.queue) {
drawCanvas = () => queueDraw.exec(() => qr[drawCanvasName]());
// drawCanvas = () => queueDraw.exec(() => new Promise((resolve, reject) => {
// setTimeout(() => {
// qr[drawCanvasName]().then(resolve).catch(reject);
// }, 1000);
// }));
} else {
drawCanvas = () => qr[drawCanvasName]();
}
/* 调用绘制方法将二维码图案绘制到canvas上 */
drawCanvas()
.then(() => {
if (this.drawDelegate) {
/* 高频重绘纠正 */
let delegate = this.drawDelegate;
this.drawDelegate = undefined;
delegate();
} else {
this.drawing = false;
callback.success();
}
})
.catch(err => {
console.log(err);
if (this.drawDelegate) {
/* 高频重绘纠正 */
let delegate = this.drawDelegate;
this.drawDelegate = undefined;
delegate();
} else {
this.drawing = false;
this.isError = true;
callback.fail(err);
}
})
.finally(() => {
callback.complete();
});
}, 300);
},
/**
* 生成二维码
*/
make(callback = {}) {
this.makeExecuted = true;
this.makeing = true;
this.isError = false;
if (typeof callback.success != 'function') {
callback.success = () => {};
}
if (typeof callback.fail != 'function') {
callback.fail = () => {};
}
if (typeof callback.complete != 'function') {
callback.complete = () => {};
}
this.resetCanvas(() => {
clearTimeout(this.makeDelegate);
this.makeDelegate = setTimeout(() => {
this.draw({
success: () => {
setTimeout(() => {
callback.success();
this.complete(true);
}, 300);
},
fail: err => {
callback.fail(err);
this.error = err;
this.complete(false, err.errMsg);
},
complete: () => {
callback.complete();
this.makeing = false;
}
});
}, 300);
});
},
/**
* 重新生成
*/
remake(callback) {
this.$emit('change');
this.make(callback);
},
/**
* 生成完成
*/
complete(success = true, errMsg = '') {
if (success) {
this.$emit('complete', {
success
});
} else {
this.$emit('complete', {
success,
errMsg
});
}
},
/**
* 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.makeExecuted) {
console.error('[uQRCode]: make() 方法从未调用！请先成功调用 make() 后再进行操作。');
var err = {
errMsg: '[uQRCode]: make() method has never been executed! please execute make() successfully before operating.'
};
callback.fail(err);
callback.complete(err);
return;
}
if (this.isError) {
callback.fail(this.error);
callback.complete(this.error);
return;
}
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 APP-NVUE
if (this.canvasType === '2d') {
// #ifdef MP-WEIXIN
try {
let dataURL = null;
// #ifdef VUE3
dataURL = toRaw(this.canvas)
.toDataURL();
// #endif
// #ifndef VUE3
dataURL = this.canvas.toDataURL();
// #endif
callback.success({
tempFilePath: dataURL
});
callback.complete({
tempFilePath: dataURL
});
} catch (e) {
callback.fail(e);
callback.complete(e);
}
// #endif
} else {
uni.canvasToTempFilePath({
canvasId: this.canvasId,
fileType: this.fileType,
width: Number(this.templateOptions.canvasWidth),
height: Number(this.templateOptions.canvasHeight),
destWidth: Number(this.templateOptions.size),
destHeight: Number(this.templateOptions.size),
success: res => {
callback.success(res);
},
fail: err => {
callback.fail(err);
},
complete: () => {
callback.complete();
}
},
this
);
}
// #endif
// #ifdef APP-NVUE
const dpr = uni.getSystemInfoSync().pixelRatio;
this.canvasContext.toTempFilePath(
0,
0,
this.templateOptions.canvasWidth * dpr,
this.templateOptions.canvasHeight * dpr,
this.templateOptions.size * dpr,
this.templateOptions.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 => {
// #ifndef H5
if (this.canvasType === '2d') {
// #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 = res.tempFilePath.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: res1 => {
uni.saveImageToPhotosAlbum({
filePath: tempFilePath,
success: res2 => {
callback.success(res2);
},
fail: err2 => {
callback.fail(err2);
},
complete: () => {
callback.complete();
}
});
},
fail: err => {
callback.fail(err);
},
complete: () => {
callback.complete();
}
});
// #endif
} else {
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;
if (this.h5SaveIsDownload) {
const aEle = document.createElement('a');
aEle.download = this.h5DownloadName; // 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({
errMsg: 'ok'
});
// #endif
},
fail: err => {
callback.fail(err);
callback.complete(err);
}
});
},
/**
* 注册click事件
*/
onClick(e) {
this.$emit('click', e);
},
/**
* 获取实例
*/
getInstance() {
return instance;
},
/**
* 注册扩展，组件仅支持注册type为style的drawCanvas扩展
* @param {Object} plugin
*/
registerStyle(plugin) {
if (plugin.Type != 'style') {
console.warn('[uQRCode]: registerStyle 仅支持注册 style 类型的扩展！');
return {
errMsg: 'registerStyle 仅支持注册 style 类型的扩展！'
};
}
if (typeof plugin === 'function') {
this.plugins.push({
plugin,
name: plugin.Name,
drawCanvas: plugin.DrawCanvas
});
}
},
getLoadImage(loadImage) {
var that = this;
if (typeof loadImage == 'function') {
return function(src) {
/* 判断是否是队列加载图片的 */
if (that.isQueueLoadImage) {
/* 解决iOS APP||NVUE同时绘制多个二维码导致图片丢失需使用队列 */
return queueLoadImage.exec(() => {
return new Promise((resolve, reject) => {
setTimeout(() => {
const cache = cacheImageList.find(x => x.src == src);
if (cache) {
resolve(cache.img);
} else {
loadImage(src)
.then(img => {
cacheImageList.push({
src,
img
});
resolve(img);
})
.catch(err => {
reject(err);
});
}
}, 10);
});
});
} else {
return loadImage(src);
}
};
} else {
return function(src) {
return Promise.resolve(src);
};
}
}
}
};
/**
* 对象属性深度替换
* @param {Object} o 原始对象/默认对象/被替换的对象
* @param {Object} r 从这个对象里取值替换到o对象里
* @return {Object} 替换后的新对象
*/
function deepReplace(o = {}, r = {}, c = false) {
let obj;
if (c) {
// 从源替换
obj = o;
} else {
// 不替换源，copy一份备份来替换
obj = {
...o
};
}
for (let k in r) {
var vr = r[k];
if (vr != undefined) {
if (vr.constructor == Object) {
obj[k] = this.deepReplace(obj[k], vr);
} else if (vr.constructor == String && !vr) {
obj[k] = obj[k];
} else {
obj[k] = vr;
}
}
}
return obj;
}
</script>
<style scoped>
.uqrcode {
position: relative;
}
.uqrcode-hide {
position: fixed;
left: 7500rpx;
}
.uqrcode-canvas {
transform-origin: top left;
}
.uqrcode-makeing {
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
z-index: 10;
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
justify-content: center;
align-items: center;
}
.uqrcode-makeing-image {
/* #ifndef APP-NVUE */
display: block;
max-width: 120px;
max-height: 120px;
/* #endif */
}
.uqrcode-error {
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
justify-content: center;
align-items: center;
}
.uqrcode-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: 60rpx;
height: 60rpx;
border: 2rpx solid #ffffff;
border-radius: 60rpx;
padding: 10rpx;
}
.uqrcode-h5-save-close-before {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%) rotate(45deg);
width: 40rpx;
height: 4rpx;
background: #ffffff;
}
.uqrcode-h5-save-close-after {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%) rotate(-45deg);
width: 40rpx;
height: 4rpx;
background: #ffffff;
}
/* #endif */
</style>