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@doonce/latex-svg-dataurl

v7.0.0

Published

Transform latex string to svg string and dataurl

Downloads

13

Readme

@doonce/latex-svg-dataurl

This is a library that converts LaTeX strings to SVG dataurl or SVG strings, dataurl can be used with canvas.输入 latex 字符串,输出 svg dataurl或 svg string , dataurl 可供 canvas 消费

.
├── README.md
├── config
│   └── rig.json                    # rig配置文件,使用@doonce/web-rig/profiles/library
├── latex-svg-dataurl.build.log              # 构建日志
├── dist                            # 输出目录,library仅输出esm格式,且不做任何降级处理
│   ├── index.d.ts
│   ├── index.d.ts.map
│   ├── index.js
│   ├── index.js.map
│   ├── index.test.d.ts
│   ├── index.test.d.ts.map
│   ├── index.test.js
│   ├── index.test.js.map
│   └── tsdoc-metadata.json         # tsdoc元信息文件,由heft build自动生成,主要被TSDoc库消费
├── dist-commonjs                   # jest使用的中间文件夹,因为 Jest 使用 Node.js 来执行测试,模块格式必须是CommonJS。这在@doonce/web-rig/profiles/library/config/typescript.json中通过additionalModuleKindsToEmit和emitFolderNameForTests字段指定;参考https://rushstack.io/zh-cn/pages/heft_configs/typescript_json/#template
│   ├── index.js
│   ├── index.js.map
│   ├── index.test.js
│   └── index.test.js.map
├── doc-meta                        # heft build时,调用api-extractor生成的产物,.api.md是api报告,.api.json是接口信息,供api-documenter消费
│   ├── latex-svg-dataurl.api.json
│   └── latex-svg-dataurl.api.md
├── package.json
├── src
│   ├── index.test.ts               # 单元测试文件
│   └── index.ts
├── temp                            # 构建缓存文件
│   └── _eslint-j7qjvp4Y.json
└── tsconfig.json
└── vite.config.js                  # 2022-1113构建、测试交给heft,vite仅做开发服务器使用

Installation

npm i @doonce/latex-svg-dataurl

Usage

  • Since this package uses [email protected] to render LaTeX to SVG, you need to reference mathjax and configure it to output TeX-AMS-MML_SVG. Also, make sure that window.MathJax is accessible.
    • For example<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js?config=TeX-AMS-MML_SVG"></script>
/** params */
export type TransformLatexToSVGStrAndDataUrlPrams = {
  latex: string /** latex输入字符串 */
  retryInterval?: number /** 渲染失败的重试间隔,默认500ms */
  retryMaxCount?: number /** 渲染重试次数,默认10次 */
}

/** return */
export type TransformLatexToSVGStrAndDataUrlRet = {
  dataUrl: string /**  转成 dataUrl 的字符串 */
  svgStr: string /** 序列化后的 svg 字符串 */
}


import { transformLatexToSVGStrAndDataUrl } from '@doonce/latex-svg-dataurl'

const { dataUrl,svgStr } = await transformLatexToSVGDataUrl({latex:'1+\\int_x^y e^x dx + \\ldots'})
  • svgStr is use new XMLSerializer().serializeToString(svg) to generate
    • If you need to deserialize the svgStr into a DOM node, please use var ret = new DOMParser().parseFromString(svgStr, 'image/svg+xml'). Then, you can insert ret.rootElement into your desired node.
    • 如果你需要将 svgStr 反序列化为dom 节点,请使用 var ret = new DomParser().parserFromString(svgStr,'image/svg+xml'),然后将ret.rootElement插入到节点即可
  • dataUrl is generate with 'data:image/svg+xml; charset=utf8, ' + encodeURIComponent(svgStr)