在此页

• 句法
• 形式定义
• 形式句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

非标
此特征是非标准的，且不在标准轨道中。不要在面向 Web 的生产站点中使用它：它不适用于每个用户。实现之间可能存在大的不兼容性，且行为将来可能改变。

-webkit-mask-composite property specifies the manner in which multiple mask images applied to the same element are composited with one another. Mask images are composited in the opposite order that they are declared with the -webkit-mask-image 特性。

/* Keyword values */
-webkit-mask-composite: clear;
-webkit-mask-composite: copy;
-webkit-mask-composite: source-over;
-webkit-mask-composite: source-in;
-webkit-mask-composite: source-out;
-webkit-mask-composite: source-atop;
-webkit-mask-composite: destination-over;
-webkit-mask-composite: destination-in;
-webkit-mask-composite: destination-out;
-webkit-mask-composite: destination-atop;
-webkit-mask-composite: xor;
/* Global values */
-webkit-mask-composite: inherit;
-webkit-mask-composite: initial;
-webkit-mask-composite: unset;
					

There is a standardized mask-composite property covering parts of this non-standard property using different keywords.

句法

值

clear

Overlapping pixels in the source mask image and the destination mask image are cleared.

copy

The source mask image replaces the destination mask image.

source-over

The source mask image is rendered over the destination mask image.

source-in

Overlapping pixels in the source mask image and the destination mask image are replaced by the pixels of the source mask image; all other pixels are cleared.

source-out

Overlapping pixels in the source mask image and the destination mask image are cleared; all remaining pixels of the source mask image are rendered.

source-atop

The pixels of the destination mask image are rendered. The pixels of the source mask image are rendered only if they overlap a nontransparent portion of the destination mask image. This causes the source mask image to have no effect.

destination-over

The destination mask image is rendered over the source mask image.

destination-in

Overlapping pixels in the source mask image and the destination mask image remain the pixels of the destination mask image; all other pixels are cleared.

destination-out

Overlapping pixels in the source mask image and the destination mask image are cleared; all remaining pixels of the source mask image are rendered.

destination-atop

The pixels of the source mask image are rendered. The pixels of the destination mask image are rendered only if they overlap a nontransparent portion of the destination mask image. This causes the destination mask image to have no effect.

xor

Overlapping pixels in the source mask image and the destination mask image become fully transparent if they are both fully opaque.

形式定义

初始值	source-over
适用于	所有元素
继承	no
计算值	如指定
动画类型	discrete

形式句法

<composite-style>#
where 
<composite-style> = clear | copy | source-over | source-in | source-out | source-atop | destination-over | destination-in | destination-out | destination-atop | xor
					

范例

Compositing with XOR

.example {
  -webkit-mask-image: url(mask1.png), url('mask2.png');
  -webkit-mask-composite: xor, source-over;
}
					

规范

Not part of any standard. This property is specified as mask-composite using different values.

浏览器兼容性

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
-webkit-mask-composite 非标	Chrome 完整支持 1	Edge 完整支持 18	Firefox 完整支持 53	IE 不支持 No	Opera 完整支持 15	Safari 完整支持 3.2	WebView Android 完整支持 2	Chrome Android 完整支持 18	Firefox Android 完整支持 53	Opera Android 完整支持 14	Safari iOS 完整支持 3.2	Samsung Internet Android 完整支持 1.0

图例

完整支持

完整支持

不支持

不支持

非标。预期跨浏览器支持较差。

非标。预期跨浏览器支持较差。

另请参阅

• mask-composite

元数据

• 最后修改： Jul 24, 2020

相关话题

1. CSS
2. CSS 参考
3. WebKit Extensions
4. 特性

   1. -webkit-border-before
   2. -webkit-box-reflect
   3. -webkit-line-clamp
   4. -webkit-mask-attachment
   5. -webkit-mask-composite
   6. -webkit-mask-position-x
   7. -webkit-mask-position-y
   8. -webkit-mask-repeat-x
   9. -webkit-mask-repeat-y
   10. -webkit-overflow-scrolling
   11. -webkit-tap-highlight-color
   12. -webkit-text-fill-color
   13. -webkit-text-stroke
   14. -webkit-text-stroke-color
   15. -webkit-text-stroke-width
   16. -webkit-touch-callout
   17. box-align
   18. box-direction
   19. box-flex
   20. box-flex-group
   21. box-lines
   22. box-ordinal-group
   23. box-orient
   24. box-pack