modern-screenshot

使用 HTML5 canvas 和 SVG 从 DOM 节点快速生成图像

Fork from html-to-image

English | 简体中文

📦 安装

``sh
npm i modern-screenshot
`

🦄 使用

`ts
import { domToPng } from 'modern-screenshot'

domToPng(document.querySelector('#app')).then(dataUrl => {
const link = document.createElement('a')
link.download = 'screenshot.png'
link.href = dataUrl
link.click()
})
`



CDN

`html


`








浏览器控制台

> ⚠️ 由于 CORS 部分嵌入将失败

`js
const script = document.createElement('script')
script.src = "https://unpkg.com/modern-screenshot"
document.getElementsByTagName('head')[0].appendChild(script)

script.onload = () => {
modernScreenshot
.domToImage(document.querySelector('body'), {
debug: true,
progress: (current, total) => {
console.log(${ current }/${ total })
}
})
.then(img => {
const width = 600
const height = img.height * (width / img.width)
console.log('%c ', [
padding: 0 ${ width / 2 }px;,
line-height: ${ height }px;,
background-image: url('${ img.src }');,
background-size: 100% 100%;,
].join(''))
})
}
`




方法

> method(node: Node, options?: Options)

DOM 转 dataURL

- domToPng
- domToSvg
- domToJpeg
- domToWebp
- domToDataUrl

DOM 转 data

- domToBlob
- domToPixel

DOM 转 HTMLElement

- domToForeignObjectSvg
- domToImage
- domToCanvas

选项

请查看 options.ts

单例上下文和 web worker

通过重用上下文和 web worker，每秒快速截图

`ts
// use vite
import workerUrl from 'modern-screenshot/worker?url'
import { createContext, destroyContext, domToPng } from 'modern-screenshot'

async function screenshotsPerSecond() {
const context = await createContext(document.querySelector('#app'), {
workerUrl,
workerNumber: 1,
})
for (let i = 0; i < 10; i++) {
domToPng(context).then(dataUrl => {
const link = document.createElement('a')
link.download = screenshot-${ i + 1 }.png
link.href = dataUrl
link.click()
if (i + 1 === 10) {
destroyContext(context)
}
})
await new Promise(resolve => setTimeout(resolve, 1000))
}
}

screenshotsPerSecond()
`

请查看 context.ts

待办事项

- [ ] 无法克隆 css 计数器

content: counter(step);`