clip-path

この記事はまだボランティアによって 日本語 に翻訳されていません。ぜひ MDN に参加して翻訳を手伝ってください！
この記事を English (US) で読むこともできます。

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The clip-path CSS property creates a clipping region that defines what part of an element should be displayed. Those portions that are inside the region are shown, while those outside are hidden. The clipping region is a path specified either as a URL referencing inline or external SVG, or as a shape, such as a circle().

Historical Note: The clip-path property replaced the deprecated clip property.

/* Keyword values */
clip-path: none;

/* Image values */ 
clip-path: url(resources.svg#c1);

/* Box values */
clip-path: fill-box;
clip-path: stroke-box;
clip-path: view-box;
clip-path: margin-box;
clip-path: border-box;
clip-path: padding-box;
clip-path: content-box;

/* Geometry values */
clip-path: inset(100px 50px);
clip-path: circle(50px at 0 100px);
clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);

/* Box and geometry values combined */
clip-path: padding-box circle(50px at 0 100px);

/* Global values */
clip-path: inherit;
clip-path: initial;
clip-path: unset;

Initial valuenone
Applies toall elements; In SVG, it applies to container elements excluding the <defs> element and all graphics elements
Inheritedno
Percentagesrefer to reference box when specified, otherwise border-box
Mediavisual
Computed valueas specified, but with <url> values made absolute
Animation typeyes, as specified for <basic-shape>, otherwise no
Canonical orderthe unique non-ambiguous order defined by the formal grammar

Syntax

The clip-path property is specified as one or a combination of the values listed below.

Values

url()
Represents a URL referencing a clipping path element.
inset(), circle(), ellipse(), polygon()
A <basic-shape> function. The size and position of the shape is defined by the <geometry-box> value. If no geometry box is specified, the border-box will be used as the reference box.
<geometry-box>
If specified in combination with a <basic-shape>, this value defines the reference box for the basic shape. If specified by itself, it causes the edges of the specified box, including any corner shaping (such as a border-radius), to be the clipping path. The geometry box can be one of the following values:
fill-box
Uses the object bounding box as the reference box.
stroke-box
Uses the stroke bounding box as the reference box.
view-box
Uses the nearest SVG viewport as the reference box. If a viewBox attribute is specified for the element creating the SVG viewport, the reference box is positioned at the origin of the coordinate system established by the viewBox attribute and the dimension of the size of the reference box is set to the width and height values of the viewBox attribute.
margin-box
Uses the margin box as the reference box.
border-box
Uses the border box as the reference box.
padding-box
Uses the padding box as the reference box.
content-box
Uses the content box as the reference box.
none
No clipping path is created.

Formal syntax

<clip-source> | [ <basic-shape> || <geometry-box> ] | none
where 
<clip-source> = <url>
<basic-shape> = <inset()> | <circle()> | <ellipse()> | <polygon()>
<geometry-box> = <shape-box> | fill-box | stroke-box | view-box
where 
<inset()> = inset( <length-percentage>{1,4} [ round <border-radius> ]? )
<circle()> = circle( [ <shape-radius> ]? [ at <position> ]? )
<ellipse()> = ellipse( [ <shape-radius>{2} ]? [ at <position> ]? )
<polygon()> = polygon( <fill-rule>? , [ <length-percentage> <length-percentage> ]# )
<shape-box> = <box> | margin-box
where 
<length-percentage> = <length> | <percentage>
<shape-radius> = <length-percentage> | closest-side | farthest-side
<position> = [[ left | center | right | top | bottom | <length-percentage> ] | [ left | center | right | <length-percentage> ] [ top | center | bottom | <length-percentage> ] | [ center | [ left | right ] <length-percentage>? ] && [ center | [ top | bottom ] <length-percentage>? ]]
<fill-rule> = nonzero | evenodd
<box> = border-box | padding-box | content-box

Examples

/* Inline SVG  */
.target {
  clip-path: url(#c1);
}

/* External SVG */
.anothertarget {
  clip-path: url(resources.svg#c1);
}

/* Circle shape */
.circleClass {
  clip-path: circle(15px at 20px 20px);
}

Live sample

HTML

<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>
</select>

CSS

#clipped {
  margin-bottom: 20px;
  clip-path: url(#cross);
}

Result

Specifications

Specification Status Comment
CSS Masking Module Level 1
The definition of 'clip-path' in that specification.		 Candidate Recommendation Extends its application to HTML elements.
Scalable Vector Graphics (SVG) 1.1 (Second Edition)
The definition of 'clip-path' in that specification.		 Recommendation Initial definition (applies to SVG elements only).

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
On HTML elements 24-webkit[1]
55.0		 No support[2] 3.5 (1.9.1) No support (Yes)-webkit[1] No support[3]
<basic-shape> 55.0 No support[2] 54 (54)[5] No support 42.0 No support[3]
On SVG content 55.0 20 (12.10240)[4] 52 (52)[6] (Yes)[4] 42.0 No support[3]
inset() 55.0 No support[2] 54 (54)[5] No support 42.0 No support[3]
Animations 55.0 No support[2] 49 (49) No support 42.0 No support[3]
fill-box and stroke-box No support No support[2] 51 (51)[7] No support No support No support[3]
Feature Android Android Webview Edge Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile Chrome for Android
On HTML elements 55.0 55.0 No support 1.0 (1.9.1) No support ? No support[3] (Yes) -webkit
55.0
<basic-shape> 55.0 55.0 No support 54.0 (54)[5] No support ? No support[3] 55.0
On SVG content 55.0 55.0 20 (12.10240)[4] 52.0 (52)[6] No support ? No support[3] 55.0
inset() 55.0 55.0 No support 54.0 (54)[5] No support ? No support[3] 55.0
Animations 55.0 55.0 No support 49.0 (49) No support ? No support[3] 55.0
fill-box and stroke-box No support No support No support 51 (51)[7] No support ? No support[3] No support

[1] Chrome and Opera currently don't support external SVGs.

[2] Edge doesn't support this feature yet. This is requested on the Edge User Voice page. See also the Edge Development page.

[3] Safari doesn't support this feature yet. See WebKit bug 126207.

[4] Internet Explorer and Edge currently only support clip paths defined via url().

[5] This feature was implemented behind the preference layout.css.clip-path-shapes.enabled, defaulting to false, since Gecko 47 (Firefox 47.0 / Thunderbird 47.0 / SeaMonkey 2.44). Basic shapes except inset() got implemented in bug 1075457, inset() got implemented in bug 1246762. Since Gecko 53 (Firefox 53.0 / Thunderbird 53.0 / SeaMonkey 2.50) the preference defaulted to true on Nightly and Developer Edition (bug 1303654), since Gecko 54 (Firefox 54.0 / Thunderbird 54.0 / SeaMonkey 2.51) it also defaults to true on Beta and Stable releases bug 1247229.

[6] This feature got implemented in bug 1246741.

[7] Before Firefox 51, fill-box and stroke-box where aliases for border-box.

See also

ドキュメントのタグと貢献者

タグ: 
 このページの貢献者: mfluehr, Jeremie, MarkusStange, chrisdavidmills, brianmacdonald, arturparkhisenko, Sebastianz, arronei, durfee, jpmedley, erikadoyle, yisibl, jsartelle, teoli, wengker90, y0ssar1an, duncanmcdonald, Siilwyn, LouisLazaris, fscholz, George8211, Maaaks, jackarmley, jtojnar, jsx, qcgm, sraghav, chRyNaN, mienaikoe, Jonathan_Watt, kscarfone, Sheppy, ethertank, mnoorenberghe, brianloveswords, grendel, BijuGC
 最終更新者: mfluehr,