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<clipPath> - SVG: Scalable Vector Graphics 编辑

The <clipPath> SVG element defines a clipping path, to be used by the clip-path property.

A clipping path restricts the region to which paint can be applied. Conceptually, parts of the drawing that lie outside of the region bounded by the clipping path are not drawn.

html,body,svg { height:100% }

<svg viewBox="0 0 100 100">
  <clipPath id="myClip">
    <!--
      Everything outside the circle will be
      clipped and therefore invisible.
    -->
    <circle cx="40" cy="35" r="35" />
  </clipPath>

  <!-- The original black heart, for reference -->
  <path id="heart" d="M10,30 A20,20,0,0,1,50,30 A20,20,0,0,1,90,30 Q90,60,50,90 Q10,60,10,30 Z" />

  <!--
    Only the portion of the red heart
    inside the clip circle is visible.
  -->
  <use clip-path="url(#myClip)" xlink:href="#heart" fill="red" />
</svg>

/* With a touch of CSS for browsers who *
 * implemented the r Geometry Property. */

@keyframes openYourHeart {from {r: 0} to {r: 60px}}

#myClip circle {
  animation: openYourHeart 15s infinite;
}

A clipping path is conceptually equivalent to a custom viewport for the referencing element. Thus, it affects the rendering of an element, but not the element's inherent geometry. The bounding box of a clipped element (meaning, an element which references a <clipPath> element via a clip-path property, or a child of the referencing element) must remain the same as if it were not clipped.

By default, pointer-events are not dispatched on clipped regions. For example, a circle with a radius of 10 which is clipped to a circle with a radius of 5 will not receive "click" events outside the smaller radius.

Attributes

clipPathUnits: Defines the coordinate system for the contents of the <clipPath> element.
Value type: userSpaceOnUse|objectBoundingBox ; Default value: userSpaceOnUse; Animatable: yes

Global attributes

Core Attributes: Most notably: id
Styling Attributes: class, style
Conditional Processing Attributes: Most notably: requiredExtensions, systemLanguage
Presentation Attributes: Most notably: clip-path, clip-rule, color, display, fill, fill-opacity, fill-rule, filter, mask, opacity, shape-rendering, stroke, stroke-dasharray, stroke-dashoffset, stroke-linecap, stroke-linejoin, stroke-miterlimit, stroke-opacity, stroke-width, transform, vector-effect, visibility

Usage notes

Categories	None
Permitted content	Any number of the following elements, in any order: Animation elements Descriptive elements Shape elements `<text>`, `<use>`

Specifications

Specification	Status	Comment
CSS Masking Module Level 1 The definition of '<clipPath>' in that specification.	Candidate Recommendation
Scalable Vector Graphics (SVG) 1.1 (Second Edition) The definition of '<clipPath>' in that specification.	Recommendation	Initial definition