<feMorphology>

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

<feMorphology> SVG 滤镜原语用于对输入图像进行腐蚀或膨胀。它的用途尤其体现在加粗或变细效果上。

使用上下文

类别滤镜元素
允许的内容任意数量、任意顺序的下列元素:
<animate><set>

属性

DOM 接口

此元素实现了 SVGFEMorphologyElement 接口。

示例

过滤 SVG 内容

SVG

html
<svg xmlns="http://www.w3.org/2000/svg" width="300" height="180">
  <filter id="erode">
    <feMorphology operator="erode" radius="1" />
  </filter>
  <filter id="dilate">
    <feMorphology operator="dilate" radius="2" />
  </filter>
  <text y="1em">普通文本</text>
  <text id="thin" y="2em">细文本</text>
  <text id="thick" y="3em">粗文本</text>
</svg>

CSS

css
text {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 3em;
}

#thin {
  filter: url(#erode);
}

#thick {
  filter: url(#dilate);
}

过滤 HTML 内容

SVG

html
<svg xmlns="http://www.w3.org/2000/svg" width="0" height="0">
  <filter id="erode">
    <feMorphology operator="erode" radius="1" />
  </filter>
  <filter id="dilate">
    <feMorphology operator="dilate" radius="2" />
  </filter>
</svg>

<p>普通文本</p>
<p id="thin">细文本</p>
<p id="thick">粗文本</p>

CSS

css
p {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 3em;
}

#thin {
  filter: url(#erode);
}

#thick {
  filter: url(#dilate);
}

规范

Specification
Filter Effects Module Level 1
# feMorphologyElement

浏览器兼容性

BCD tables only load in the browser

参见