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README.md
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README.md
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# sign-canvas 一个基于canvas开发,封装于Vue组件的通用手写签名板(电子签名板),支持pc端和移动端;
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#### ┭┮﹏┭┮ 因为 vue-aliplayer-v2 的包名被占用了,只好去掉一个前缀了.... 假如此轮子对你有帮助,请顺手star一下吧.o(*￣︶￣*)o
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## 开始使用! 下载安装npm包
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```bash
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npm i sign-canvas --save
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```
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```javascript
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//全局注册 main.js
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import SignCanvas from 'sign-canvas';
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Vue.use(SignCanvas);
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```
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你可以这样使用:
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### 组件模板使用
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```html
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<template>
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<div id="app">
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<sign-canvas class="sign-canvas" ref="SignCanvas" :options="options" v-model="value"/>
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<img class="view-image" :src="value" width="150" height="150">
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<div class="sign-btns">
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<span id="clear" @click="canvasClear()">清空</span>
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<span id="save" @click="saveAsImg()">保存</span>
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<span id="save" @click="downloadSignImg()">下载</span>
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</div>
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</div>
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</template>
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<script>
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export default {
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data(){
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return {
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value: null,
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options:{
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isSign: true, //签名模式 [Boolean] 默认为非签名模式,有线框, 当设置为true的时候没有任何线框
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isShowBorder: false, //是否显示边框 [可选]
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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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* 清除画板
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*/
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canvasClear(){
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this.$refs.SignCanvas.canvasClear();
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},
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/**
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* 保存图片
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*/
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saveAsImg(){
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const img = this.$refs.SignCanvas.saveAsImg();
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alert(`image 的base64：${img}`);
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},
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/**
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* 下载图片
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*/
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downloadSignImg(){
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this.$refs.SignCanvas.downloadSignImg();
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},
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}
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}
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</script>
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<style lang="less" scoped>
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* {
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margin: 0;
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padding: 0;
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}
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.sign-canvas{
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display: block;
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margin: 0 auto;
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border: 1px dashed #f00;
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}
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.view-image{
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display: block;
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margin: 20px auto;
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}
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.sign-btns{
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width: 800px;
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margin: 0 auto;
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display: flex;
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justify-content: space-between;
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#clear,
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#clear1,
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#save {
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margin: 0 auto;
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display: inline-block;
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padding: 5px 10px;
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width: 150px;
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height: 40px;
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line-height: 40px;
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border: 1px solid #eee;
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background: #e1e1e1;
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border-radius: 10px;
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text-align: center;
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margin: 20px auto;
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cursor: pointer;
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}
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}
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</style>
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```
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### 功能与配置
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```javascript
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props:{
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options: { //配置项
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required: false,
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type: [Object],
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default: () => null
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}
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}
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// 1. options [Object] 可选,非必传
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// 2. v-model [String] 可选,非必传
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```
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1. 配置项 options 属性
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```javascript
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{
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lastWriteSpeed: 1, //书写速度 [Number] 可选
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lastWriteWidth: 2, //下笔的宽度 [Number] 可选
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lineCap: 'round', //线条的边缘类型 [butt]平直的边缘 [round]圆形线帽 [square] 正方形线帽
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lineJoin: 'round', //线条交汇时边角的类型 [bevel]创建斜角 [round]创建圆角 [miter]创建尖角。
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canvasWidth: 600, //canvas宽高 [Number] 可选
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canvasHeight: 600, //高度 [Number] 可选
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isShowBorder: true, //是否显示边框 [可选] 当签名模式处于false的时候此选项才生效
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bgColor: '#fcc', //背景色 [String] 可选
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borderWidth: 1, // 网格线宽度 [Number] 可选
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borderColor: "#ff787f", //网格颜色 [String] 可选
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writeWidth: 5, //基础轨迹宽度 [Number] 可选
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maxWriteWidth: 30, // 写字模式最大线宽 [Number] 可选
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minWriteWidth: 5, // 写字模式最小线宽 [Number] 可选
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writeColor: '#101010', // 轨迹颜色 [String] 可选
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isSign: false, //签名模式 [Boolean] 默认为非签名模式,有线框, 当设置为true的时候没有任何线框
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imgType:'png' //下载的图片格式 [String] 可选为 jpeg canvas本是透明背景的
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}
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```
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2. 内置方法
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```javascript
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//清除画布 无返回值 [Void]
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this.$refs.SignCanvas.canvasClear();
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//清除画布 返回图片的base64编码 [String]
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this.$refs.SignCanvas.saveAsImg();
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//调用内置的下载图片方法,默认将图片保存为png格式
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this.$refs.SignCanvas.downloadSignImg();
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```
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## [在线演示](https://langyuxiansheng.github.io/vue-aliplayer-v2/)
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### 图片展示
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---
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初始化展示
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非签名模式书写展示
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保存展示
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下载的图片展示
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签名模式的图片展示
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---
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## 更多功能正在完善中......
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## 如果您有什么好的建议请留言
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## 二次开发 下载项目
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```bash
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git clone https://github.com/langyuxiansheng/vue-aliplayer-v2.git
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```
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## Project setup
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```bash
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cd vue-aliplayer-v2
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npm install
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```
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### Compiles and hot-reloads for development
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```bash
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npm run dev
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```
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### Compiles and minifies for production
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```bash
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npm run build
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```
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### Lints and fixes files
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```bash
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npm run lint
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```
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## 缺陷 & 后期计划
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> 目前还没有撤销回到上一步的操作,一旦输入错了就只有清除重写了(这个是之前去银行的时候,那个签名板是这样设计的);
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> 如果有需要还是可以考虑加上回到上一步的方法.
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### Customize configuration
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See [Configuration Reference](https://cli.vuejs.org/config/).
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## 感谢每一位开源的开发者. 这是一个基于Alipayer 开发并封装成vue组件的播放器.
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