滤镜 | mask (Scalable Vector Graphics) - CSS 中文开发手册 - Break易站


  • ??CSS 中文开发手册

    滤镜 | mask (Scalable Vector Graphics) - CSS 中文开发手册

    maskCSS属性通过部分或完全隐藏它改变的元件的可见性。这是通过在特定点掩蔽或裁剪图像来完成的。

    /* Keyword values */
    mask: none;
    
    /* Image values */
    mask: url(mask.png);                       /* Pixel image used as mask */
    mask: url(masks.svg#star);                 /* Element within SVG graphic used as mask */
    
    /* Combined values */
    mask: url(masks.svg#star) luminance;       /* Element within SVG graphic used as luminance mask */
    mask: url(masks.svg#star) 40px 20px;       /* Element within SVG graphic used as mask positioned 40px from the top and 20px from the left */
    mask: url(masks.svg#star) 0 0/50px 50px;   /* Element within SVG graphic used as mask with a width and height of 50px */
    mask: url(masks.svg#star) repeat-x;        /* Element within SVG graphic used as horizontally repeated mask */
    mask: url(masks.svg#star) stroke-box;      /* Element within SVG graphic used as mask extending to the box enclosed by the stroke */
    mask: url(masks.svg#star) exclude;         /* Element within SVG graphic used as mask and combined with background using non-overlapping parts */
    
    /* Global values */
    mask: inherit;
    mask: initial;
    mask: unset;

    该mask速记也会重置mask-border为初始值。因此,建议使用mask速记而不是其他简写或单个属性覆盖级联中较早的任何掩码设置。这将确保mask-border已被重置以允许新样式生效。

    初始值

    作为简写的每个属性:mask-origin:border-box mask-clip:border-box

    适用于

    所有元素; 在SVG中,它适用于不包含<defs>元素和所有图形元素的容器元素

    遗传

    没有

    百分比

    作为速记的每个属性:掩码位置:指的是掩码绘图区域的大小减去掩码图层的大小(参见背景位置文本)

    媒体

    visual

    计算值

    作为速记的每个属性:mask-origin:如指定的mask-clip:所指定的那样

    动画类型

    作为简写的每个属性:掩码位置:长度,百分比或计算的简单列表的可重复列表掩码大小:简单长度,百分比或计算列表的可重复列表

    规范的顺序

    形式语法定义的独特的非模糊顺序

    创建堆叠上下文

    mask-origin*border-boxmask-clip*border-box

    Applies to all elements; In SVG, it applies to container elements excluding the [`<defs>`](https://developer.mozilla.org/en-US/docs/Web/SVG/Element/defs) element and all graphics elements   [Inherited](inheritance) no   Percentages as each of the properties of the shorthand:

    mask-position:指遮罩绘画区域的大小减去遮罩层图像的大小(参见文本background-position)媒体视觉计算值作为速记的每个属性:mask-origin*具体规定mask-clip*具体规定

    Animation type as each of the properties of the shorthand:

    mask-position:简单的长度,百分比或计算列表的可重复列表mask-size:简单的长度,百分比或计算列表的可重复列表

    Canonical order the unique non-ambiguous order defined by the formal grammar   Creates [stacking context](css_positioning/understanding_z_index/the_stacking_context)  yes  

    语法

    <mask-reference>设置掩码图像源。见mask-image

    <masking-mode>设置掩码图像的掩蔽模式。见mask-mode...

    <position>设置掩码图像的位置。见mask-position...

    <bg-size>设置掩码图像的大小。见mask-size...<

    repeat-style>设置掩码图像的重复。见mask-repeat...

    <geometry-box>如果只有一个<geometry-box>值,它将两者都设置为mask-origin和mask-clip.如果两个<geometry-box>值,则第一组mask-origin和第二组mask-clip...

    <geometry-box> | no-clip设置受掩码图像影响的区域。见mask-clip...

    <compositing-operator>设置当前掩码层上使用的复合操作。见mask-composite...

    形式语法

    <mask-layer>#where 
    <mask-layer> = <mask-reference> || <position> [ / <bg-size> ]? || <repeat-style> || <geometry-box> || [ <geometry-box> | no-clip ] || <compositing-operator> || <masking-mode>
    where 
    <mask-reference> = none | <image> | <mask-source>
    <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>? ]]
    <bg-size> = [ <length-percentage> | auto ]{1,2} | cover | contain
    <repeat-style> = repeat-x | repeat-y | [ repeat | space | round | no-repeat ]{1,2}
    <geometry-box> = <shape-box> | fill-box | stroke-box | view-box
    <compositing-operator> = add | subtract | intersect | exclude
    <masking-mode> = alpha | luminance | match-source
    where 
    <image> = <url> | <image()> | <image-set()> | <element()> | <cross-fade()> | <gradient>
    <mask-source> = <url>
    <length-percentage> = <length> | <percentage>
    <shape-box> = <box> | margin-box
    where 
    <image()> = image( [ [ <image> | <string> ]? , <color>? ]! )
    <image-set()> = image-set( <image-set-option># )
    <element()> = element( <id-selector> )
    <cross-fade()> = cross-fade( <cf-mixing-image> , <cf-final-image>? )
    <gradient> = <linear-gradient()> | <repeating-linear-gradient()> | <radial-gradient()> | <repeating-radial-gradient()>
    <box> = border-box | padding-box | content-box
    where 
    <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>
    <image-set-option> = [ <image> | <string> ] <resolution>
    <cf-mixing-image> = <percentage>? && <image>
    <cf-final-image> = <image> | <color>
    <linear-gradient()> = linear-gradient( [ <angle> | to <side-or-corner> ]? , <color-stop-list> )
    <repeating-linear-gradient()> = repeating-linear-gradient( [ <angle> | to <side-or-corner> ]? , <color-stop-list> )
    <radial-gradient()> = radial-gradient( [ <ending-shape> || <size> ]? [ at <position> ]? , <color-stop-list> )
    <repeating-radial-gradient()> = repeating-radial-gradient( [ <ending-shape> || <size> ]? [ at <position> ]? , <color-stop-list> )
    where 
    <rgb()> = rgb( [ [ <percentage>{3} | <number>{3} ] [ / <alpha-value> ]? ] | [ [ <percentage>#{3} | <number>#{3} ] , <alpha-value>? ] )
    <rgba()> = rgba( [ [ <percentage>{3} | <number>{3} ] [ / <alpha-value> ]? ] | [ [ <percentage>#{3} | <number>#{3} ] , <alpha-value>? ] )
    <hsl()> = hsl( [ <hue> <percentage> <percentage> [ / <alpha-value> ]? ] | [ <hue>, <percentage>, <percentage>, <alpha-value>? ] )
    <hsla()> = hsla( [ <hue> <percentage> <percentage> [ / <alpha-value> ]? ] | [ <hue>, <percentage>, <percentage>, <alpha-value>? ] )
    <side-or-corner> = [ left | right ] || [ top | bottom ]
    <color-stop-list> = <color-stop>#{2,}
    <ending-shape> = circle | ellipse
    <size> = closest-side | farthest-side | closest-corner | farthest-corner | <length> | <length-percentage>{2}
    
    where 
    <alpha-value> = <number> | <percentage>
    <hue> = <number> | <angle>
    <color-stop> = <color> <length-percentage>?

    实例

    .target {
      mask: url(#c1) luminance;
    }
    
    .anothertarget {
      mask: url(resources.svg#c1) 50px 30px/10px 10px repeat-x exclude;
    }

    规范

    Specification

    Status

    Comment

    CSS Masking Module Level 1The definition of ‘mask‘ in that specification.

    Candidate Recommendation

    Extends its usage to HTML elements. Extends its syntax by making it a shorthand for the new mask-* properties defined in that specification.

    Scalable Vector Graphics (SVG) 1.1 (Second Edition)The definition of ‘mask‘ in that specification.

    Recommendation

    Initial definition.

    浏览器兼容性

    Feature

    Chrome

    Edge

    Firefox (Gecko)

    Internet Explorer

    Opera

    Safari (WebKit)

    Basic support (for SVG, only setting the mask image)

    1.0-webkit1

    (Yes)

    (Yes)2

    No support

    (Yes)-webkit1

    4.0-webkit3

    Applies to HTML Elements

    1.0-webkit1

    ?

    3.5 (1.9.1)1

    No support

    (Yes)-webkit1

    No support

    Shorthand for mask-* properties

    1.0-webkit1

    ?

    53.0 (53.0)4

    No support

    (Yes)-webkit1

    No support

    Feature

    Android

    Edge

    Firefox Mobile (Gecko)

    IE Phone

    Opera Mobile

    Safari Mobile

    Basic support (for SVG, only setting the mask image)

    2.1-webkit

    (Yes)

    ?

    ?

    ?

    3.2-webkit

    Applies to HTML Elements

    ?

    ?

    ?

    ?

    ?

    ?

    Shorthand for mask-* properties

    ?

    ?

    ?

    ?

    ?

    ?

    
    
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