路径不适合 SVG 内部

Question

我已经使用 SVG 一段时间了。但看了很多视频、读了很多文章，我仍然无法理解viewbox。

我正在尝试动态生成 SVG：

import SvgIcon from '@material-ui/core/SvgIcon';

<SvgIcon className="svg" width="24" height="24" viewBox="0 0 24 24">
  <g>
    <path
      d={scrapbookElement.icon.path}
    />
  </g>
</SvgIcon>

这是我的 JSON 文件，它为我提供了 scrapbookElements：

[
  {
    "id": "image",
    "text": "Image",
    "icon": {
        "path": "M9.5999776,12.699997L11.899997,15.099998 13.299991,14.300003 19.000005,20 22.899999,18 28.299995,20.699997 28.299995,25.699997 3.5999767,25.699997 3.5999767,18.599998z M20.500005,11.699997L21.199987,11.699997 21.000005,12.800003 20.699987,12.800003z M23.09998,10.699997L23.799993,11.599998 23.59998,11.800003 22.699987,11.099998z M18.699987,10.699997L19.199987,11.199997 18.299993,11.900002 18.000005,11.599998z M23.59998,8.5999985L24.699987,8.8000031 24.699987,9 23.59998,9.1999969z M18.09998,8.5999985L18.09998,9.3000031 17.000005,9 17.000005,8.8000031z M20.799993,7C21.899999,7 22.699987,7.9000015 22.699987,8.9000015 22.699987,10 21.799993,10.800003 20.799993,10.800003 19.699987,10.800003 18.899999,9.9000015 18.899999,8.9000015 18.899999,7.8000031 19.799993,7 20.799993,7z M23.500005,6.0999985L23.699987,6.3000031 23.000005,7.1999969 22.500005,6.6999969z M18.199987,6.0999985L19.09998,6.8000031 18.59998,7.3000031 18.000005,6.3000031z M20.699987,5L21.000005,5 21.199987,6.0999985 20.500005,6.0999985z M2.1999823,2.4000015L2.1999823,26.800003 29.400001,26.800003 29.400001,2.4000015z M0,0L31.900001,0 31.900001,32 0,32z"
    }
  },
  {
    "id": "text",
    "text": "Text",
    "icon": {
        "path": "M29.15,0L30.186011,0.012001038 30.610999,0.43099976 31.096015,3.868 31.209998,7.8079987 31.101996,8.3949966 30.610999,8.6230011 29.875007,8.5510025 29.437018,7.9520035 28.312018,5.298996 26.993995,3.7130013 25.82801,3.072998 24.294013,2.6170006 22.390996,2.3429985 20.12,2.2509995 18.580998,2.3590012 17.940007,2.6829987 17.868993,3.0900002 17.868993,26.970001 18.048009,28.272003 18.58701,29.113998 19.659001,29.697998 21.437016,30.227997 22.149999,30.389 22.467015,30.490997 22.707005,31.401001 22.179997,32 21.910008,31.994003 21.198003,31.928001 15.424992,31.640999 10.755008,31.879997 9.4850186,31.879997 9.1740131,31.305 9.2879972,30.665001 10.011996,30.275002 11.737002,29.695 12.791018,29.005997 13.401005,27.909996 13.605015,26.298996 13.605015,3.0900002 13.390018,2.5390015 12.743014,2.2750015 12.342013,2.2579994 11.329989,2.2509995 7.3779925,2.6469994 4.6229872,3.8320007 3.0840158,5.4970016 1.7250066,8.1439972 1.2399907,8.7959976 0.598999,8.7900009 0.041992187,8.4729996 0,7.9039993 0.62899778,4.7839966 0.83898971,0.59899902 1.2040105,0.20999908 2.2999882,0.14400101 7.7489947,0.39500046 13.748997,0.47900009 19.16602,0.44900131 23.539008,0.35900116 26.867011,0.20999908z"
    }
  }
]

这是输出：

我可以用overflow: visiblecss 来处理这个问题。但我不想这样做，因为那样我会遇到高度和宽度的问题，这将导致我使用 Flexbox 时无法正确居中。

这是重现该问题的 codeandbox：

单击此处获取代码沙箱

Answer 1

基本上，如果您想将 SVG 放入容器中，您需要将viewBox属性设置为其内容的精确值。在这种情况下，从属性中的点d您可以看到它是0 0 32 32（如：x、y、宽度、高度）。

width然后，您可以使用和属性调整 SVG 的大小height，以拉伸/收缩到您希望其适合的容器（当然要考虑到纵横比）。

如果您不知道viewBox给定 SVG 的正确值，并且没有笔画 - 就像上面的示例一样，您可以尝试在浏览器中使用开发工具并调用.getBBox()该<svg>元素，这将为您提供 x，要放置在 viewBox 中的 y、宽度和高度。

Answer 2

为了获得路径的大小，我将你的图标转换为真正的 svg

console.log(test.getBBox());
console.log(test1.getBBox())

<svg className="svg" width="24" height="24" viewBox="0 0 32 32" >
  <g>
    <path id="test"
      d="M9.5999776,12.699997L11.899997,15.099998 13.299991,14.300003 19.000005,20 22.899999,18 28.299995,20.699997 28.299995,25.699997 3.5999767,25.699997 3.5999767,18.599998z M20.500005,11.699997L21.199987,11.699997 21.000005,12.800003 20.699987,12.800003z M23.09998,10.699997L23.799993,11.599998 23.59998,11.800003 22.699987,11.099998z M18.699987,10.699997L19.199987,11.199997 18.299993,11.900002 18.000005,11.599998z M23.59998,8.5999985L24.699987,8.8000031 24.699987,9 23.59998,9.1999969z M18.09998,8.5999985L18.09998,9.3000031 17.000005,9 17.000005,8.8000031z M20.799993,7C21.899999,7 22.699987,7.9000015 22.699987,8.9000015 22.699987,10 21.799993,10.800003 20.799993,10.800003 19.699987,10.800003 18.899999,9.9000015 18.899999,8.9000015 18.899999,7.8000031 19.799993,7 20.799993,7z M23.500005,6.0999985L23.699987,6.3000031 23.000005,7.1999969 22.500005,6.6999969z M18.199987,6.0999985L19.09998,6.8000031 18.59998,7.3000031 18.000005,6.3000031z M20.699987,5L21.000005,5 21.199987,6.0999985 20.500005,6.0999985z M2.1999823,2.4000015L2.1999823,26.800003 29.400001,26.800003 29.400001,2.4000015z M0,0L31.900001,0 31.900001,32 0,32z"
    />
  </g>
</svg>


<hr>

<svg className="svg" width="24" height="24" viewBox="0 0 32 32" >
  <g>
    <path id="test1"
      d="M29.15,0L30.186011,0.012001038 30.610999,0.43099976 31.096015,3.868 31.209998,7.8079987 31.101996,8.3949966 30.610999,8.6230011 29.875007,8.5510025 29.437018,7.9520035 28.312018,5.298996 26.993995,3.7130013 25.82801,3.072998 24.294013,2.6170006 22.390996,2.3429985 20.12,2.2509995 18.580998,2.3590012 17.940007,2.6829987 17.868993,3.0900002 17.868993,26.970001 18.048009,28.272003 18.58701,29.113998 19.659001,29.697998 21.437016,30.227997 22.149999,30.389 22.467015,30.490997 22.707005,31.401001 22.179997,32 21.910008,31.994003 21.198003,31.928001 15.424992,31.640999 10.755008,31.879997 9.4850186,31.879997 9.1740131,31.305 9.2879972,30.665001 10.011996,30.275002 11.737002,29.695 12.791018,29.005997 13.401005,27.909996 13.605015,26.298996 13.605015,3.0900002 13.390018,2.5390015 12.743014,2.2750015 12.342013,2.2579994 11.329989,2.2509995 7.3779925,2.6469994 4.6229872,3.8320007 3.0840158,5.4970016 1.7250066,8.1439972 1.2399907,8.7959976 0.598999,8.7900009 0.041992187,8.4729996 0,7.9039993 0.62899778,4.7839966 0.83898971,0.59899902 1.2040105,0.20999908 2.2999882,0.14400101 7.7489947,0.39500046 13.748997,0.47900009 19.16602,0.44900131 23.539008,0.35900116 26.867011,0.20999908z"
    />
  </g>
</svg>

然后我使用该方法.getBBox()来获取两个图标的边界框的大小。在这两种情况下，边界框的宽度和高度几乎为 32，x 和 y 为 0。我已将 viewBox 更改为 x y w hie 0 0 32 32。这将缩小 svg 内的图像，而 svg 元素的宽度和高度保持为 24/24