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|
---
title: clip-path
slug: Web/CSS/clip-path
tags:
- CSS
- CSS Masking
- CSS 属性
- CSS 遮罩
- Web
- clip-path
- 实验性
- 引用
translation_of: Web/CSS/clip-path
---
<div>{{CSSRef}}</div>
<p><code><strong>clip-path</strong></code> <a href="/zh-CN/docs/Web/CSS">CSS</a> 属性使用裁剪方式创建元素的可显示区域。区域内的部分显示,区域外的隐藏。</p>
<div>{{EmbedInteractiveExample("pages/css/clip-path.html")}}</div>
<p class="hidden">这个交互式示例的源代码存储在 GitHub 存储库中。如果你想为这个互动例子项目做贡献,请克隆 https://github.com/mdn/interactive-examples 并发送请求给我们。</p>
<h2 id="语法">语法</h2>
<pre class="brush:css no-line-numbers notranslate">/* Keyword values */
clip-path: none;
/* <clip-source> values */
clip-path: url(resources.svg#c1);
/* <geometry-box> values */
clip-path: margin-box;
clip-path: border-box;
clip-path: padding-box;
clip-path: content-box;
clip-path: fill-box;
clip-path: stroke-box;
clip-path: view-box;
/* <basic-shape> values */
clip-path: inset(100px 50px);
clip-path: circle(50px at 0 100px);
clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
clip-path: path('M0.5,1 C0.5,1,0,0.7,0,0.3 A0.25,0.25,1,1,1,0.5,0.3 A0.25,0.25,1,1,1,1,0.3 C1,0.7,0.5,1,0.5,1 Z');
/* Box and shape values combined */
clip-path: padding-box circle(50px at 0 100px);
/* Global values */
clip-path: inherit;
clip-path: initial;
clip-path: unset;
</pre>
<p>clip-path属性指定为下面列出的值的一个或多个值的组合.</p>
<h3 id="取值">取值</h3>
<dl>
<dt><code><clip-source></code></dt>
<dd>用 {{cssxref("<url>")}} 表示剪切元素的路径</dd>
<dt>{{cssxref("<basic-shape>")}}</dt>
<dd>一种形状,其大小和位置由<几何盒>值定义。如果没有指定几何框,则边框将用作参考框</dd>
<dt><code><geometry-box></code></dt>
<dd>如果同 <code><basic-shape></code> 一起声明,它将为基本形状提供相应的参考框盒。通过自定义,它将利用确定的盒子边缘包括任何形状边角(比如说,被 {{cssxref("border-radius")}} 定义的剪切路径)。几何框盒可以有以下的值中的一个:</dd>
<dd>
<dl>
<dt><code>margin-box</code></dt>
<dd>使用 <a href="CSS_Box_Model/Introduction_to_the_CSS_box_model">margin box</a> 作为引用框。</dd>
<dt><code>border-box</code></dt>
<dd>使用 <a href="CSS_Box_Model/Introduction_to_the_CSS_box_model">border box</a> 作为引用框。</dd>
<dt><code>padding-box</code></dt>
<dd>使用 <a href="CSS_Box_Model/Introduction_to_the_CSS_box_model">padding box</a> 作为引用框。</dd>
<dt><code>content-box</code></dt>
<dd>使用 <a href="CSS_Box_Model/Introduction_to_the_CSS_box_model">content box</a> 作为引用框。</dd>
<dt><code>fill-box</code></dt>
<dd>利用对象边界框作为引用框。</dd>
<dt><code>stroke-box</code></dt>
<dd>使用笔触边界框(stroke bounding box)作为引用框</dd>
<dt><code>view-box</code></dt>
<dd>使用最近的 SVG 视口(viewport)作为引用框。如果{{SVGAttr("viewBox")}} 属性被指定来为元素创建 SVG 视口,引用框将会被定位在坐标系的原点,引用框位于由 <code>viewBox</code> 属性建立的坐标系的原点,引用框的尺寸用来设置 <code>viewBox</code> 属性的宽高值。</dd>
</dl>
</dd>
<dt><code>none</code></dt>
<dd>不创建的剪切路径。</dd>
</dl>
<div class="blockIndicator note">
<p><strong>Note</strong>: A computed value other than <strong><code>none</code></strong> results in the creation of a new <a href="https://wiki.developer.mozilla.org/en-US/docs/CSS/Understanding_z-index/The_stacking_context">stacking context</a> the same way that CSS {{cssxref("opacity")}} does for values other than <code>1</code>.</p>
</div>
<h3 id="正式语法">正式语法</h3>
<pre class="syntaxbox notranslate">{{csssyntax}}</pre>
<h2 id="例子">例子</h2>
<h3 id="HTML_与_SVG_之间的对比">HTML 与 SVG 之间的对比</h3>
<div class="hidden" id="clip-path">
<pre class="brush: html notranslate"><svg class="defs">
<defs>
<clipPath id="myPath" clipPathUnits="objectBoundingBox">
<path d="M0.5,1 C0.5,1,0,0.7,0,0.3 A0.25,0.25,1,1,1,0.5,0.3 A0.25,0.25,1,1,1,1,0.3 C1,0.7,0.5,1,0.5,1 Z" />
</clipPath>
</defs>
</svg>
<div class="grid">
<div class="col">
<div class="note">clip-path: none</div>
<div class="row">
<div class="cell"> <span>HTML</span>
<div class="container">
<p class="none">
I LOVE<br><em>clipping</em>
</p>
</div>
</div>
<div class="cell"> <span>SVG</span>
<div class="container viewbox">
<svg viewBox="0 0 192 192">
<g class="none">
<rect x="24" y="24" width="144" height="144" />
<text x="96" y="91">I LOVE</text>
<text x="96" y="109" class="em">clipping</text>
</g>
</svg>
</div>
</div>
</div>
<div class="note">clip-path: url(#myPath)<br><br>
Assuming the following clipPath definition:
<pre>
&lt;svg&gt;
&lt;clipPath id="myPath" clipPathUnits="objectBoundingBox"&gt;
&lt;path d="M0.5,1
C 0.5,1,0,0.7,0,0.3
A 0.25,0.25,1,1,1,0.5,0.3
A 0.25,0.25,1,1,1,1,0.3
C 1,0.7,0.5,1,0.5,1 Z" /&gt;
&lt;/clipPath&gt;
&lt;/svg&gt;</pre>
</div>
<div class="row">
<div class="cell"> <span>HTML</span>
<div class="container">
<p class="svg">
I LOVE<br><em>clipping</em>
</p>
</div>
</div>
<div class="cell"> <span>SVG</span>
<div class="container viewbox">
<svg viewBox="0 0 192 192">
<g class="svg">
<rect x="24" y="24" width="144" height="144" />
<text x="96" y="91">I LOVE</text>
<text x="96" y="109" class="em">clipping</text>
</g>
</svg>
</div>
</div>
</div>
<div class="note">clip-path: path('M15,45 A30,30,0,0,1,75,45 A30,30,0,0,1,135,45 Q135,90,75,130 Q15,90,15,45 Z')
</div>
<div class="row">
<div class="cell"> <span>HTML</span>
<div class="container">
<p class="svg2">
I LOVE<br><em>clipping</em>
</p>
</div>
</div>
<div class="cell"> <span>SVG</span>
<div class="container viewbox">
<svg viewBox="0 0 192 192">
<g class="svg2">
<rect x="24" y="24" width="144" height="144" />
<text x="96" y="91">I LOVE</text>
<text x="96" y="109" class="em">clipping</text>
</g>
</svg>
</div>
</div>
</div>
<div class="note">clip-path: circle(25%)</div>
<div class="row">
<div class="cell"> <span>HTML</span>
<div class="container">
<p class="shape1">
I LOVE<br><em>clipping</em>
</p>
</div>
</div>
<div class="cell"> <span>SVG</span>
<div class="container viewbox">
<svg viewBox="0 0 192 192">
<g class="shape1">
<rect x="24" y="24" width="144" height="144" />
<text x="96" y="91">I LOVE</text>
<text x="96" y="109" class="em">clipping</text>
</g>
</svg>
</div>
</div>
</div>
<div class="note">clip-path: circle(25% at 25% 25%)</div>
<div class="row">
<div class="cell"> <span>HTML</span>
<div class="container">
<p class="shape2">
I LOVE<br><em>clipping</em>
</p>
</div>
</div>
<div class="cell"> <span>SVG</span>
<div class="container viewbox">
<svg viewBox="0 0 192 192">
<g class="shape2">
<rect x="24" y="24" width="144" height="144" />
<text x="96" y="91">I LOVE</text>
<text x="96" y="109" class="em">clipping</text>
</g>
</svg>
</div>
</div>
</div>
<div class="note">clip-path: fill-box circle(25% at 25% 25%)</div>
<div class="row">
<div class="cell"> <span>HTML</span>
<div class="container">
<p class="shape3">
I LOVE<br><em>clipping</em>
</p>
</div>
</div>
<div class="cell"> <span>SVG</span>
<div class="container viewbox">
<svg viewBox="0 0 192 192">
<g class="shape3">
<rect x="24" y="24" width="144" height="144" />
<text x="96" y="91">I LOVE</text>
<text x="96" y="109" class="em">clipping</text>
</g>
</svg>
</div>
</div>
</div>
<div class="note">clip-path: stroke-box circle(25% at 25% 25%)</div>
<div class="row">
<div class="cell"> <span>HTML</span>
<div class="container">
<p class="shape4">
I LOVE<br><em>clipping</em>
</p>
</div>
</div>
<div class="cell"> <span>SVG</span>
<div class="container viewbox">
<svg viewBox="0 0 192 192">
<g class="shape4">
<rect x="24" y="24" width="144" height="144" />
<text x="96" y="91">I LOVE</text>
<text x="96" y="109" class="em">clipping</text>
</g>
</svg>
</div>
</div>
</div>
<div class="note">clip-path: view-box circle(25% at 25% 25%)</div>
<div class="row">
<div class="cell"> <span>HTML</span>
<div class="container">
<p class="shape5">
I LOVE<br><em>clipping</em>
</p>
</div>
</div>
<div class="cell"> <span>SVG</span>
<div class="container viewbox">
<svg viewBox="0 0 192 192">
<g class="shape5">
<rect x="24" y="24" width="144" height="144" />
<text x="96" y="91">I LOVE</text>
<text x="96" y="109" class="em">clipping</text>
</g>
</svg>
</div>
</div>
</div>
<div class="note">clip-path: margin-box circle(25% at 25% 25%)</div>
<div class="row">
<div class="cell"> <span>HTML</span>
<div class="container">
<p class="shape6">
I LOVE<br><em>clipping</em>
</p>
</div>
</div>
<div class="cell"> <span>SVG</span>
<div class="container viewbox">
<svg viewBox="0 0 192 192">
<g class="shape6">
<rect x="24" y="24" width="144" height="144" />
<text x="96" y="91">I LOVE</text>
<text x="96" y="109" class="em">clipping</text>
</g>
</svg>
</div>
</div>
</div>
<div class="note">clip-path: border-box circle(25% at 25% 25%)</div>
<div class="row">
<div class="cell"> <span>HTML</span>
<div class="container">
<p class="shape7">
I LOVE<br><em>clipping</em>
</p>
</div>
</div>
<div class="cell"> <span>SVG</span>
<div class="container viewbox">
<svg viewBox="0 0 192 192">
<g class="shape7">
<rect x="24" y="24" width="144" height="144" />
<text x="96" y="91">I LOVE</text>
<text x="96" y="109" class="em">clipping</text>
</g>
</svg>
</div>
</div>
</div>
<div class="note">clip-path: padding-box circle(25% at 25% 25%)</div>
<div class="row">
<div class="cell"> <span>HTML</span>
<div class="container">
<p class="shape8">
I LOVE<br><em>clipping</em>
</p>
</div>
</div>
<div class="cell"> <span>SVG</span>
<div class="container viewbox">
<svg viewBox="0 0 192 192">
<g class="shape8">
<rect x="24" y="24" width="144" height="144" />
<text x="96" y="91">I LOVE</text>
<text x="96" y="109" class="em">clipping</text>
</g>
</svg>
</div>
</div>
</div>
<div class="note">clip-path: content-box circle(25% at 25% 25%)</div>
<div class="row">
<div class="cell"> <span>HTML</span>
<div class="container">
<p class="shape9">
I LOVE<br><em>clipping</em>
</p>
</div>
</div>
<div class="cell"> <span>SVG</span>
<div class="container viewbox">
<svg viewBox="0 0 192 192">
<g class="shape9">
<rect x="24" y="24" width="144" height="144" />
<text x="96" y="91">I LOVE</text>
<text x="96" y="109" class="em">clipping</text>
</g>
</svg>
</div>
</div>
</div>
</div>
</div></pre>
<pre class="brush: css notranslate">html,body {
height: 100%;
box-sizing: border-box;
background: #EEE;
}
.grid {
width: 100%;
height: 100%;
display: flex;
font: 1em monospace;
}
.row {
display: flex;
flex: 1 auto;
flex-direction: row;
flex-wrap: wrap;
}
.col {
flex: 1 auto;
}
.cell {
margin: .5em;
padding: .5em;
background-color: #FFF;
overflow: hidden;
text-align: center;
flex: 1;
}
.note {
background: #fff3d4;
padding: 1em;
margin: .5em .5em 0;
font: .8em sans-serif;
text-align: left;
white-space: nowrap;
}
.note + .row .cell {
margin-top: 0;
}
.container {
display: inline-block;
border: 1px dotted grey;
position:relative;
}
.container:before {
content: 'margin';
position: absolute;
top: 2px;
left: 2px;
font: italic .6em sans-serif;
}
.viewbox {
box-shadow: 1rem 1rem 0 #EFEFEF inset, -1rem -1rem 0 #EFEFEF inset;
}
.container.viewbox:after {
content: 'viewbox';
position: absolute;
left: 1.1rem;
top: 1.1rem;
font: italic .6em sans-serif;
}
.cell span {
display: block;
margin-bottom: .5em;
}
p {
font-family: sans-serif;
background: #000;
color: pink;
margin: 2em;
padding: 3em 1em;
border: 1em solid pink;
width: 6em;
}
.none { clip-path: none; }
.svg { clip-path: url(#myPath); }
.svg2 { clip-path: path('M15,45 A30,30,0,0,1,75,45 A30,30,0,0,1,135,45 Q135,90,75,130 Q15,90,15,45 Z');}
.shape1 { clip-path: circle(25%); }
.shape2 { clip-path: circle(25% at 25% 25%); }
.shape3 { clip-path: fill-box circle(25% at 25% 25%); }
.shape4 { clip-path: stroke-box circle(25% at 25% 25%); }
.shape5 { clip-path: view-box circle(25% at 25% 25%); }
.shape6 { clip-path: margin-box circle(25% at 25% 25%); }
.shape7 { clip-path: border-box circle(25% at 25% 25%); }
.shape8 { clip-path: padding-box circle(25% at 25% 25%); }
.shape9 { clip-path: content-box circle(25% at 25% 25%); }
.defs {
width: 0;
height: 0;
margin: 0;
}
pre { margin-bottom: 0; }
svg {
margin: 1em;
font-family: sans-serif;
width: 192px;
height: 192px;
}
svg rect {
stroke: pink;
stroke-width: 16px;
}
svg text {
fill: pink;
text-anchor: middle;
}
svg text.em {
font-style: italic;
}</pre>
</div>
<p>{{EmbedLiveSample("clip-path", "100%", 800, "", "", "example-outcome-frame")}}</p>
<h3 id="完整示例">完整示例</h3>
<h4 id="HTML">HTML</h4>
<pre class="brush: html notranslate"><img id="clipped" src="https://mdn.mozillademos.org/files/12668/MDN.svg"
alt="MDN logo">
<svg height="0" width="0">
<defs>
<clipPath id="cross">
<rect y="110" x="137" width="90" height="90"/>
<rect x="0" y="110" width="90" height="90"/>
<rect x="137" y="0" width="90" height="90"/>
<rect x="0" y="0" width="90" height="90"/>
</clipPath>
</defs>
</svg>
<select id="clipPath">
<option value="none">none</option>
<option value="circle(100px at 110px 100px)">circle</option>
<option value="url(#cross)" selected>cross</option>
<option value="inset(20px round 20px)">inset</option>
<option value="path('M 0 200 L 0,110 A 110,90 0,0,1 240,100 L 200 340 z')">path</option>
</select>
</pre>
<h4 id="CSS">CSS</h4>
<pre class="brush: css notranslate">#clipped {
margin-bottom: 20px;
clip-path: url(#cross);
}
</pre>
<div class="hidden">
<h4 id="JavaScript">JavaScript</h4>
<pre class="brush: js notranslate">var clipPathSelect = document.getElementById("clipPath");
clipPathSelect.addEventListener("change", function (evt) {
document.getElementById("clipped").style.clipPath = evt.target.value;
});
</pre>
</div>
<h4 id="结果">结果</h4>
<p>{{EmbedLiveSample("Complete_example", 230, 250)}}</p>
<h2 id="规范">规范</h2>
<table class="standard-table">
<thead>
<tr>
<th scope="col">Specification</th>
<th scope="col">Status</th>
<th scope="col">Comment</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{SpecName("CSS Masks", "#the-clip-path", 'clip-path')}}</td>
<td>{{Spec2('CSS Masks')}}</td>
<td>Extends its application to HTML elements</td>
</tr>
<tr>
<td>{{SpecName('SVG1.1', 'masking.html#ClipPathProperty', 'clip-path')}}</td>
<td>{{Spec2('SVG1.1')}}</td>
<td>Initial definition (applies to SVG elements only)</td>
</tr>
</tbody>
</table>
<p>{{cssinfo}}</p>
<h2 id="浏览器兼容性">浏览器兼容性</h2>
<div class="hidden"><font>此页面上的兼容性表由结构化数据生成。如果你想对这些数据有所贡献,请查看</font><a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.<font> 然后发给我们一个请求。</font></div>
<p>{{Compat("css.properties.clip-path")}}</p>
<h2 id="参见">参见</h2>
<ul>
<li><a href="https://hacks.mozilla.org/2017/06/css-shapes-clipping-and-masking/">Shapes in clipping and masking – and how to use them</a></li>
<li>CSS properties: {{cssxref("mask")}}, {{cssxref("filter")}}</li>
<li><a href="https://developer.mozilla.org/en-US/docs/Applying_SVG_effects_to_HTML_content">Applying SVG effects to HTML content</a></li>
<li>SVG attributes: {{SVGAttr("clip-path")}}, {{SVGAttr("clip-rule")}}</li>
</ul>
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