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postcss-color-overlay

v0.2.1

Published

PostCSS plugin is used to calculte color overlay. The color mode must be RGBA.

Downloads

6

Readme

PostCSS Color Overlay Build Status

PostCSS 默认只对包含在'background', 'background-color', 'border', 'border-left', 'border-right', 'border-top', 'border-bottom', 'border-color', 'border-left-color', 'border-right-color', 'border-top-color', 'border-bottom-color', 'color', 'box-shadow'属性中的rgba色值进行叠加运算。可解决多个带Alpha通道的色值叠加问题,书写顺序为色值自下而上的叠加顺序,书写顺序会影响运算结果。

.foo {
    /* Input example */
    color: rgba(255, 255, 255, 1) + rgba(255, 0, 0, 0.5);
    border-color: #FFF + rgba(255, 0, 0, 0.5);
    background: rgba(255, 255, 255, 1) + rgba(255, 0, 0, 0.5) + rgba(0, 0, 255, 0.5) url("../img/bg.png") repeat-x;
}
.foo {
  /* Output example */
  color: rgba(255, 128, 128, 1);
  border-color: rgba(255, 128, 128, 1);
  background: rgba(128, 64, 191, 1) url("../img/bg.png") repeat-x;
}
/*divide选项为false*/
.foo {
    /* Input example */
    color: rgba(255, 255, 255, 1) rgba(255, 0, 0, 0.5);
    border-color: #FFF rgba(255, 0, 0, 0.5);
    background: rgba(255, 255, 255, 1) rgba(255, 0, 0, 0.5) rgba(0, 0, 255, 0.5) url("../img/bg.png") repeat-x;
}
/*divide选项为false*/
.foo {
  /* Output example */
  color: rgba(255, 128, 128, 1);
  border-color: rgba(255, 128, 128, 1);
  background: rgba(128, 64, 191, 1) url("../img/bg.png") repeat-x;
}

Usage

var options = {
  disabled: false, // 是否禁用该插件
  divide: true, // 色值之间是否使用分隔符"+"号,该选项在与scss一起使用时,可防止scss语法检查报错
  include: [], // 包含在运算范围内的css属性
  exclude: [] // 不包含在运算范围内的css属性(优先级最高)
};
postcss([ require('postcss-color-overlay')(options) ])

See PostCSS docs for examples for your environment.