The <mask>
element defines an alpha mask for compositing the current object into the background. A mask is used/referenced using the mask
property.
<svg viewBox="-10 -10 120 120">
<mask id="myMask">
<!-- Everything under a white pixel will be visible -->
<rect x="0" y="0" width="100" height="100" fill="white" />
<!-- Everything under a black pixel will be invisible -->
<path d="M10,35 A20,20,0,0,1,50,35 A20,20,0,0,1,90,35 Q90,65,50,95 Q10,65,10,35 Z" fill="black" />
</mask>
<polygon points="-10,110 110,110 110,-10" fill="orange" />
<!-- with this mask applied, we "punch" a heart shape hole into the circle -->
<circle cx="50" cy="50" r="50" mask="url(#myMask)" />
</svg>
属性
height
- This attribute defines the height of the masking area.
Value type: <length> ; Default value:120%
; Animatable: yes maskContentUnits
- This attribute defines the coordinate system for the contents of the
<mask>
.
Value type:userSpaceOnUse
|objectBoundingBox
; Default value:userSpaceOnUse
; Animatable: yes maskUnits
- This attribute defines defines the coordinate system for attributes
x
,y
,width
andheight
on the<mask>
.
Value type:userSpaceOnUse
|objectBoundingBox
; Default value:objectBoundingBox
; Animatable: yes x
- This attribute defines the x-axis coordinate of the top-left corner of the masking area.
Value type: <coordinate> ; Default value:-10%
; Animatable: yes y
- This attribute defines the y-axis coordinate of the top-left corner of the masking area.
Value type: <coordinate> ; Default value:-10%
; Animatable: yes width
- This attribute defines the width of the masking area.
Value type: <length> ; Default value:120%
; 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
カテゴリー | コンテナー要素 |
---|---|
許可されている内容 | 任意の数、任意の順序の以下の要素。 アニメーション要素 説明的要素 図形要素 構造的要素 グラデーション要素 <a> 、 <altGlyphDef> 、 <clipPath> 、 <color-profile> 、 <cursor> 、 <filter> 、 <font> 、 <font-face> 、 <foreignObject> 、 <image> 、 <marker> 、 <mask> 、 <pattern> 、 <script> 、 <style> 、 <switch> 、 <text> 、 <view> |
仕様
仕様書 | ステータス | コメント |
---|---|---|
CSS Masking Module Level 1 <mask> の定義 |
勧告候補 | |
Scalable Vector Graphics (SVG) 1.1 (Second Edition) <mask> の定義 |
勧告 | 初期定義 |
ブラウザの互換性
BCD tables only load in the browser
あわせて参照
- Other clipping and masking SVG elements:
<clipPath>
- Clipping and masking CSS properties:
mask
,mask-image
,mask-mode
,mask-repeat
,mask-position
,mask-clip
,mask-origin
,mask-composite
,mask-size
,pointer-events