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<!-- ---------------------------------------------------------------------
// uQRCode二维码生成插件 v3.5.1
//
// uQRCode是一款基于Javascript环境开发的二维码生成插件适用所有Javascript运行环境的前端应用和Node.js。
//
// Copyright (c) Sansnn uQRCode All rights reserved.
//
// Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
//
// github地址
// https://github.com/Sansnn/uQRCode
//
// npm地址
// https://www.npmjs.com/package/@uqrcode/uni-app
//
// uni-app插件市场地址
// https://ext.dcloud.net.cn/plugin?id=1287
//
// 复制使用请保留本段注释,感谢支持开源!
//
--------------------------------------------------------------------- -->
<template>
<view class="uqrcode" :class="{ 'uqrcode-hide': hide }" :style="{ width: `${templateOptions.width}px`, height: `${templateOptions.height}px` }">
<!-- 画布 -->
<!-- #ifndef MP-WEIXIN || APP-NVUE -->
<canvas
class="uqrcode-canvas"
:id="canvasId"
:canvas-id="canvasId"
:style="{
width: `${templateOptions.canvasWidth}px`,
height: `${templateOptions.canvasHeight}px`,
transform: `scale(${size / templateOptions.canvasWidth}, ${size / templateOptions.canvasHeight})`
}"
@click="onClick"
v-if="templateOptions.canvasDisplay"
></canvas>
<!-- #endif -->
<!-- 微信小程序非2d模式不支持transform所以使用canvas2d -->
<!-- #ifdef MP-WEIXIN -->
<canvas
class="uqrcode-canvas"
type="2d"
:id="canvasId"
:canvas-id="canvasId"
:style="{
width: `${templateOptions.canvasWidth}px`,
height: `${templateOptions.canvasHeight}px`
}"
@click="onClick"
v-if="templateOptions.canvasDisplay"
></canvas>
<!-- #endif -->
<!-- nvue用gcanvas -->
<!-- #ifdef APP-NVUE -->
<gcanvas
class="uqrcode-canvas"
ref="gcanvas"
:style="{
width: `${templateOptions.canvasWidth}px`,
height: `${templateOptions.canvasHeight}px`
}"
@click="onClick"
v-if="templateOptions.canvasDisplay"
></gcanvas>
<!-- #endif -->
<!-- H5保存提示 -->
<!-- #ifdef H5 -->
<view class="uqrcode-h5-save" v-if="isH5Save">
<image class="uqrcode-h5-save-image" :src="tempFilePath"></image>
<text class="uqrcode-h5-save-text">若保存失败请长按二维码进行保存</text>
<view class="uqrcode-h5-save-close" @click="isH5Save = false">
<view class="uqrcode-h5-save-close-before"></view>
<view class="uqrcode-h5-save-close-after"></view>
</view>
</view>
<!-- #endif -->
<!-- 加载效果可在此替换 -->
<view class="uqrcode-makeing" v-if="makeing">
<image
class="uqrcode-makeing-image"
:style="{ width: `${size / 4}px`, height: `${size / 4}px` }"
src="data:image/gif;base64,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"
></image>
</view>
<!-- 错误处理可在此替换 -->
<view class="uqrcode-error" v-if="inError"><text class="uqrcode-error-message">Error, see console.</text></view>
</view>
</template>
<script>
// #ifdef VUE3
import { toRaw } from 'vue';
// #endif
/* 引入uQRCode核心js */
import UQRCode from '../../js_sdk/uqrcode';
/* 引入nvue所需模块 */
// #ifdef APP-NVUE
import { enable, WeexBridge } from '../../js_sdk/gcanvas';
const modal = weex.requireModule('modal');
// #endif
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
},
/**
* 二维码内容
*/
value: {
type: [String, Number]
},
/**
* 二维码大小
*/
size: {
type: [String, Number],
default: 200
},
/**
* 选项
*/
options: {
type: Object,
default: () => {
return {};
}
},
/**
* 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: false
},
/**
* 隐藏组件
*/
hide: {
type: Boolean,
default: false
}
},
data() {
return {
canvas: undefined,
canvasContext: undefined,
makeDelegate: undefined,
drawDelegate: undefined,
toTempFilePathDelegate: undefined,
makeing: false,
drawing: false,
inError: false,
isH5Save: false,
tempFilePath: '',
templateOptions: {
width: 0, // 组件宽度
height: 0,
canvasWidth: 0, // canvas宽度
canvasHeight: 0,
canvasDisplay: false
},
uqrcodeOptions: {
data: ''
},
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: {
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.canvasWidth = this.size;
this.templateOptions.canvasHeight = this.size;
if (this.start) {
this.make();
}
},
methods: {
/**
* 获取模板选项
*/
getTemplateOptions() {
return UQRCode.deepReplace(this.templateOptions, {
width: this.size,
height: this.size
});
},
/**
* 获取插件选项
*/
getUqrcodeOptions() {
return UQRCode.deepReplace(this.options, {
data: String(this.value),
size: Number(this.size)
});
},
/**
* 重置画布
*/
resetCanvas(callback) {
this.templateOptions.canvasDisplay = false;
this.$nextTick(() => {
this.templateOptions.canvasDisplay = true;
this.$nextTick(() => {
callback && callback();
});
});
},
/**
* 绘制二维码
*/
async draw(callback = success => {}) {
if (this.drawing) {
this.drawDelegate = () => {
this.draw(callback);
};
}
this.drawing = true;
this.inError = false;
if (!this.canvasId) {
console.error('[uQRCode]: canvasId must be set!');
this.inError = true;
callback(false);
return;
}
if (!this.value) {
console.error('[uQRCode]: value must be set!');
this.inError = true;
callback(false);
return;
}
/* 组件数据 */
this.templateOptions = this.getTemplateOptions();
/* uQRCode选项 */
this.uqrcodeOptions = this.getUqrcodeOptions();
/* 纠错等级兼容字母写法 */
if (typeof this.uqrcodeOptions.errorCorrectLevel === 'string') {
this.uqrcodeOptions.errorCorrectLevel = UQRCode.errorCorrectLevel[this.uqrcodeOptions.errorCorrectLevel];
}
/* nvue不支持动态修改gcanvas尺寸除nvue外默认使用useDynamicSize */
// #ifndef APP-NVUE
if (typeof this.options.useDynamicSize === 'undefined') {
this.uqrcodeOptions.useDynamicSize = true;
}
// #endif
// #ifdef APP-NVUE
this.uqrcodeOptions.useDynamicSize = false;
// #endif
/* 获取uQRCode实例 */
const qr = new UQRCode();
/* 设置uQRCode选项 */
qr.setOptions(this.uqrcodeOptions);
/* 调用制作二维码方法 */
qr.make();
/* 获取canvas上下文 */
// #ifndef MP-WEIXIN || APP-NVUE
/* uniapp获取canvas上下文方式 */
const canvasContext = (this.canvasContext = uni.createCanvasContext(this.canvasId, this));
/* 使用dynamicSize可以解决小块间出现白线问题再通过scale缩放至size使其达到所设尺寸 */
this.templateOptions.canvasWidth = qr.dynamicSize;
this.templateOptions.canvasHeight = qr.dynamicSize;
/* uniapp获取图像方式 */
UQRCode.loadImage = function(src) {
return new Promise((resolve, reject) => {
uni.getImageInfo({
src,
success: res => {
resolve(res.path);
},
fail: err => {
reject(err);
}
});
});
};
// #endif
// #ifdef MP-WEIXIN
/* 微信小程序获取canvas上下文方式 */
const canvas = (this.canvas = await new Promise(resolve => {
uni
.createSelectorQuery()
.in(this) // 在组件内使用需要
.select(`#${this.canvasId}`)
.fields({
node: true,
size: true
})
.exec(res => {
resolve(res[0].node);
});
}));
const 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=200canvas.width设置为100那么绘制出来就是100=200组件size=400canvas.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;
/* 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 */
UQRCode.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);
};
img.onerror = err => {
reject(err);
};
});
};
// #endif
// #ifdef APP-NVUE
/* NVue获取canvas上下文方式 */
const gcanvas = this.$refs['gcanvas'];
const canvas = enable(gcanvas, {
bridge: WeexBridge
});
const canvasContext = (this.canvasContext = canvas.getContext('2d'));
/* NVue获取图像方式 */
UQRCode.loadImage = function(src) {
return new Promise((resolve, reject) => {
/* getImageInfo在nvue的bug获取同一个路径的图片信息同一时间第一次获取成功后续失败猜测是写入本地时产生文件写入冲突所以没有返回特别是对于网络资源 --- js部分已实现队列绘制已解决此问题 */
uni.getImageInfo({
src,
success: res => {
resolve(res.path);
},
fail: err => {
reject(err);
}
});
});
};
// #endif
/* 设置uQRCode实例的canvas上下文 */
qr.canvasContext = canvasContext;
/* 延时等待页面重新绘制完毕 */
setTimeout(() => {
/* 调用绘制方法将二维码图案绘制到canvas上 */
qr.drawCanvas()
.then(() => {
if (this.drawDelegate) {
/* 高频重绘纠正 */
this.drawDelegate();
this.drawDelegate = undefined;
} else {
this.drawing = false;
callback(true);
}
})
.catch(() => {
if (this.drawDelegate) {
this.drawDelegate();
this.drawDelegate = undefined;
} else {
this.inError = true;
this.drawing = false;
callback(false);
}
});
}, 300);
},
/**
* 生成二维码
*/
make() {
this.makeing = true;
this.resetCanvas(() => {
clearTimeout(this.makeDelegate);
this.makeDelegate = setTimeout(() => {
this.draw(res => {
this.makeing = false;
this.complete(res);
});
}, 300);
});
},
/**
* 重新生成
*/
remake() {
this.make();
},
/**
* 生成完成
*/
complete(success = true) {
setTimeout(() => {
this.$emit('complete', {
success
});
}, 300);
},
/**
* 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');
// #ifdef VUE3
const dataURL = toRaw(this.canvas).toDataURL().replace(reg, '');
// #endif
// #ifndef VUE3
const dataURL = this.canvas.toDataURL().replace(reg, '');
// #endif
const fs = wx.getFileSystemManager();
const tempFilePath = `${wx.env.USER_DATA_PATH}/${new Date().getTime()}${
Math.random()
.toString()
.split('.')[1]
}.png`;
fs.writeFile({
filePath: tempFilePath, // 要写入的文件路径 (本地路径)
data: dataURL, // base64图片
encoding: 'base64',
success: res => {
callback.success({
tempFilePath
});
},
fail: err => {
callback.fail(err);
},
complete: () => {
callback.complete();
}
});
// #endif
// #ifdef APP-NVUE
/* 测试过程中size需要乘以3才能保存完整3又对应dpr猜测是与像素比有关故乘以3。第一次运行无法保存后续正常待排查。 */
const dpr = uni.getSystemInfoSync().pixelRatio;
this.canvasContext.toTempFilePath(0, 0, this.size * dpr, this.size * dpr, this.size * dpr, this.size * dpr, '', 1, res => {
callback.success(res);
callback.complete(res);
});
// #endif
},
/**
* 保存
*/
save(callback = {}) {
if (typeof callback.success != 'function') {
callback.success = () => {};
}
if (typeof callback.fail != 'function') {
callback.fail = () => {};
}
if (typeof callback.complete != 'function') {
callback.complete = () => {};
}
this.toTempFilePath({
success: res => {
// #ifndef H5
uni.saveImageToPhotosAlbum({
filePath: res.tempFilePath,
success: res1 => {
callback.success(res1);
},
fail: err1 => {
callback.fail(err1);
},
complete: () => {
callback.complete();
}
});
// #endif
// #ifdef H5
/* 可以在电脑浏览器下载移动端iOS不行安卓微信浏览器不行安卓外部浏览器可以 */
this.isH5Save = true;
this.tempFilePath = res.tempFilePath;
const aEle = document.createElement('a');
aEle.download = 'uQRCode'; // 设置下载的文件名,默认是'下载'
aEle.href = res.tempFilePath;
document.body.appendChild(aEle);
aEle.click();
aEle.remove(); // 下载之后把创建的元素删除
callback.success({
errMsg: 'ok'
});
callback.complete();
// #endif
},
fail: err => {
callback.fail(err);
callback.complete();
}
});
},
/**
* 注册click事件
*/
onClick(e) {
this.$emit('click', e);
}
}
};
</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: 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>