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](src/converts/dom-to-png.ts)
- [domToSvg](src/converts/dom-to-svg.ts)
- [domToJpeg](src/converts/dom-to-jpeg.ts)
- [domToWebp](src/converts/dom-to-webp.ts)
- [domToDataUrl](src/converts/dom-to-data-url.ts)
DOM 转 data
- [domToBlob](src/converts/dom-to-blob.ts)
- [domToPixel](src/converts/dom-to-pixel.ts)
DOM 转 HTMLElement
- [domToForeignObjectSvg](src/converts/dom-to-foreign-object-svg.ts)
- [domToImage](src/converts/dom-to-image.ts)
- [domToCanvas](src/converts/dom-to-canvas.ts)
## 选项
请查看 [options.ts](src/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](src/context.ts)
## 待办事项
- [ ] 无法克隆 [css 计数器](https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Counter_Styles/Using_CSS_counters)
`content: counter(step);`