theme-color-switch

This a script to switch color specific styles less file and which you can use to change theme dynamically in browser.

Also you can use these less syntax functions for color conversion.

Install

$ npm install theme-color-switch

Demo

Try out the demo

Example:

const less = require('theme-color-switch');
const colorSource = require('!raw-loader!./public/color.less'); // theme file content which generate by theme-color-generator
less.render(
   colorSource,
   {
       modifyVars: {
           '@theme-color': '#0035ff' // the variables in theme file which you want to change
       },
   },
   function(e, output) {
      if (e) {
          console.error(`Failed to update theme`);
      }
      if (output && output.css) {
          addCSS(output.css);
      }
   }
);

Note: You need to generate color.less file with theme-color-generator ( as color.js in example ) first, then toggle color with this package as Theme.js in example

Now you can change colors by modify less avriables as the example

如只想使用主题切换的，上面的内容就已完成。

颜色函数：想要用js执行less颜色函数实时转化颜色的，请往下看（详细说明请访问less官网）。

1. 返回Color对象的可以使用toCSS()属性来获取输出值。也可以作为下一个函数的颜色参数。
2. 返回Dimension对象的可以作为number类型传给下一个函数。

使用示例

import { shade, tint, fade } from 'theme-color-switch';

let shadeColor = shade('#007fff', '50%').toCSS();
let fadeAndTintColor = fade(tint('#007fff', '30%'), '10%').toCSS();

如何支持 rgb、rgba 的颜色值转换

使用 color（或 rgb、rgba）函数先将其转换成 Color 对象，再将其传给颜色函数

import { color, tint } from 'theme-color-switch';

let tintColor1 = tint(color('rgb(90, 129, 32)'), '30%').toCSS();
let tintColor2 = tint(color('rgba(90, 129, 32, 0.5)'), '30%').toCSS();

颜色定义函数

rgb

Returns: Color
Example: rgb(90, 129, 32)
Output: #5a8120

rgba

Returns: Color
Example: rgba(90, 129, 32, 0.5)
Output: rgba(90, 129, 32, 0.5)

argb

Returns: Color
Example: argb(rgba(90, 23, 148, 0.5))
Output: #805a1794

hsl

Returns: Color
Example: hsl(90, 100%, 50%)
Output: #80ff00

hsla

Returns: Color
Example: hsla(90, 100%, 50%, 0.5)
Output: rgba(128, 255, 0, 0.5)

hsv

Returns: Color
Example: hsv(90, 100%, 50%)
Output: #408000

hsva

Returns: Color
Example: hsva(90, 100%, 50%, 0.5)
Output: rgba(64, 128, 0, 0.5)

颜色通道函数

hue

Returns: Dimension
Example: hue(hsl(90, 100%, 50%))
Output: 90

saturation

Returns: Dimension
Example: saturation(hsl(90, 100%, 50%))
Output: 100%

lightness

Returns: Dimension
Example: lightness(hsl(90, 100%, 50%))
Output: 50%

hsvhue

Returns: Dimension
Example: hsvhue(hsv(90, 100%, 50%))
Output: 90

hsvsaturation

Returns: Dimension
Example: hsvsaturation(hsv(90, 100%, 50%))
Output: 100%

hsvvalue

Returns: Dimension
Example: hsvhue(hsv(90, 100%, 50%))
Output: 90

red

Returns: Dimension
Example: red(rgb(10, 20, 30))
Output: 10

green

Returns: Dimension
Example: green(rgb(10, 20, 30))
Output: 20

blue

Returns: Dimension
Example: blue(rgb(10, 20, 30))
Output: 30

alpha

Returns: Dimension
Example: alpha(rgba(10, 20, 30, 0.5))
Output: 0.5

luma

Returns: Dimension
Example: luma(rgb(100, 200, 30))
Output: 44%

luminance

Returns: Dimension
Example: luminance(rgb(100, 200, 30))
Output: 65%

颜色操作函数

saturate

Returns: Color
Example: saturate(#80e619, 20%)
Output: #80ff00

desaturate

Returns: Color
Example: desaturate(#80e619, 20%)
Output: #80cd32

lighten

Returns: Color
Example: lighten(#80e619, 20%)
Output: #b3f075

darken

Returns: Color
Example: darken(#80e619, 20%)
Output: #4d8a0f

fadein

Returns: Color
Example: fadein(rgba(128, 242, 13, 0.5), 10%)
Output: rgba(128, 242, 13, 0.6)

fadeout

Returns: Color
Example: fadeout(rgba(128, 242, 13, 0.5), 10%)
Output: rgba(128, 242, 13, 0.4)

fade

Returns: Color
Example: fade(#80f20d, 10%)
Output: rgba(128, 242, 13, 0.1)

spin

Returns: Color
Example: spin(#f2330d, 30)
Output: #f2a60d

mix

Returns: Color
Example: mix(#ff0000, #0000ff, 50%)
Output: #800080

tint

Returns: Color
Example: tint(#007fff, 50%)
Output: #80bfff

shade

Returns: Color
Example: shade(#007fff, 50%)
Output: #004080

greyscale

Returns: Color
Example: greyscale(#80f20d)
Output: #808080

contrast

Returns: Color
Example:

p {
    a: contrast(#bbbbbb);
    b: contrast(#222222, #101010);
    c: contrast(#222222, #101010, #dddddd);
    d: contrast(hsl(90, 100%, 50%), #000000, #ffffff, 30%);
    e: contrast(hsl(90, 100%, 50%), #000000, #ffffff, 80%);
}

Output:

p {
    a: #000000 // black
    b: #ffffff // white
    c: #dddddd
    d: #000000 // black
    e: #ffffff // white
}

颜色转换函数

color

Returns: Color

Example	Output
color('#5a8120')	#5a8120
color('rgb(90, 129, 32)')	#5a8120
color('rgba(90, 129, 32, 0.5)')	rgba(90, 129, 32, 0.5)