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

1npm i modern-screenshot

🦄 使用

1import { domToPng } from 'modern-screenshot'
2
3domToPng(document.querySelector('#app')).then(dataUrl => {
4  const link = document.createElement('a')
5  link.download = 'screenshot.png'
6  link.href = dataUrl
7  link.click()
8})

1<script src="https://unpkg.com/modern-screenshot"></script>
2<script>
3  modernScreenshot.domToPng(document.querySelector('body')).then(dataUrl => {
4    const link = document.createElement('a')
5    link.download = 'screenshot.png'
6    link.href = dataUrl
7    link.click()
8  })
9</script>

1const script = document.createElement('script')
2script.src = "https://unpkg.com/modern-screenshot"
3document.getElementsByTagName('head')[0].appendChild(script)
4
5script.onload = () => {
6  modernScreenshot
7    .domToImage(document.querySelector('body'), {
8      debug: true,
9      progress: (current, total) => {
10        console.log(`${ current }/${ total }`)
11      }
12    })
13    .then(img => {
14      const width = 600
15      const height = img.height * (width / img.width)
16      console.log('%c ', [
17        `padding: 0 ${ width / 2 }px;`,
18        `line-height: ${ height }px;`,
19        `background-image: url('${ img.src }');`,
20        `background-size: 100% 100%;`,
21      ].join(''))
22    })
23}

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

1// use vite
2import workerUrl from 'modern-screenshot/worker?url'
3import { createContext, destroyContext, domToPng } from 'modern-screenshot'
4
5async function screenshotsPerSecond() {
6  const context = await createContext(document.querySelector('#app'), {
7    workerUrl,
8    workerNumber: 1,
9  })
10  for (let i = 0; i < 10; i++) {
11    domToPng(context).then(dataUrl => {
12      const link = document.createElement('a')
13      link.download = `screenshot-${ i + 1 }.png`
14      link.href = dataUrl
15      link.click()
16      if (i + 1 === 10) {
17        destroyContext(context)
18      }
19    })
20    await new Promise(resolve => setTimeout(resolve, 1000))
21  }
22}
23
24screenshotsPerSecond()

请查看 context.ts

待办事项

• 无法克隆 css 计数器

  content: counter(step);