[Doc] custom theme

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陈嘉涵 2018-11-04 22:24:21 +08:00
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`Vant` provides a set of default themes, if you want to custom the theme color or other styles, you can use the following methods: `Vant` provides a set of default themes, if you want to custom the theme color or other styles, you can use the following methods:
### Option 1. PostCSS Plugin ### Less variables
You can import the postcss source code in your own project, then use [postcss-theme-variables](https://www.npmjs.com/package/postcss-theme-variables) to replace the postcss variable.
```javascript Vant use [Less](http://lesscss.org/) as css preprocessoryou can modify less variables to custom theme.
// import base style
import 'vant/packages/style/base.css';
// import component style There are some basic variables below, all available variables could be found in [var.less](https://github.com/youzan/vant/blob/dev/packages/style/var.less)。
import 'vant/packages/button/index.css';
import 'vant/packages/checkbox/index.css'; ```less
// color variables
@black: #000;
@white: #fff;
@red: #f44;
@blue: #1989fa;
@orange: #ff976a;
@orange-dark: #ed6a0c;
@orange-light: #fffbe8;
@green: #4b0;
@gray: #c9c9c9;
@gray-light: #e5e5e5;
@gray-darker: #666;
@gray-dark: #999;
// default colors
@text-color: #333;
@border-color: #eee;
@active-color: #e8e8e8;
@background-color: #f8f8f8;
@background-color-light: #fafafa;
``` ```
Then require the plugin in the postcss.config.js, and configure the variables according to project needs, you can view all the available variables in [profile](https://github.com/youzan/vant/blob/dev/packages/style/var.less). ### How to custom theme
```javascript
#### Step 1: import less file
First you should import the less source file to your project. you can use babel-plugin-import to automatically import or just manually import less file.
```js
// configure babel plugin in babel.config.js
module.exports = { module.exports = {
plugins: [ plugins: [
require('postcss-easy-import')({ [
extensions: ['pcss', 'css'] 'import',
}), {
require('postcss-theme-variables')({ libraryName: 'vant',
vars: { libraryDirectory: 'es',
red: '#F60', // specify less file path
gray: '#CCC', style: name => `${name}/style/less`
blue: '#03A9F4'
}, },
prefix: '$' 'vant'
}), ]
require('precss')(),
require('postcss-calc')(),
require('autoprefixer')({
browsers: ['Android >= 4.0', 'iOS >= 7']
})
] ]
}; };
``` ```
### Option 2. Local build manually import less file
Vant also support local build to custom themes.
```bash ```js
# Clone the repository import Button from 'vant/lib/button';
git clone git@github.com:youzan/vant.git import 'vant/lib/button/style/less';
cd packages/style
``` ```
In the local style repository, modify the variables in src/var.less, then execute the following build command to generate the style file. #### Step 2: modify less variables
```bash
npm run build Use [modifyVars](http://lesscss.org/usage/#using-less-in-the-browser-modify-variables) provided by less.js to modify less variableswebpack config for reference:
```js
// webpack.config.js
module.exports = {
rules: [
{
test: /\.less$/,
use: [
// ...other loaders
{
loader: 'less-loader',
options: {
modifyVars: {
red: '#03a9f4',
blue: '#3eaf7c',
orange: '#f08d49',
'text-color': '#111'
}
}
}
]
}
]
};
``` ```

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`Vant`提供了一套默认主题CSS 命名采用 BEM 的风格,方便使用者覆盖样式。如果你想完全替换主题色或者其他样式,可以使用下面的方法: `Vant`提供了一套默认主题CSS 命名采用 BEM 的风格,方便使用者覆盖样式。如果你想完全替换主题色或者其他样式,可以使用下面的方法:
### 方案一. PostCSS 插件 ### 示例工程
在项目中直接引入组件对应的 postcss 源代码,并通过 postcss 插件 [postcss-theme-variables](https://www.npmjs.com/package/postcss-theme-variables) 替换颜色变量,步骤如下:
```javascript 我们提供了一个基于 Vue Cli 3 的示例工程,仓库地址为 [Vant Demo](https://github.com/youzan/vant-demo),其中包含了定制主题的基本配置,可以作为参考。
// 引入基础样式
import 'vant/packages/style/base.css';
// 引入组件对应的样式 ### 样式变量
import 'vant/packages/style/button/index.css';
import 'vant/packages/style/checkbox/index.css'; Vant 使用了 [Less](http://lesscss.org/) 对样式进行预处理,并内置了一些样式变量,通过替换样式变量即可定制你自己需要的主题。
下面是一些基本的样式变量,所有可用的颜色变量请参考 [配置文件](https://github.com/youzan/vant/blob/dev/packages/style/var.less)。
```less
// color variables
@black: #000;
@white: #fff;
@red: #f44;
@blue: #1989fa;
@orange: #ff976a;
@orange-dark: #ed6a0c;
@orange-light: #fffbe8;
@green: #4b0;
@gray: #c9c9c9;
@gray-light: #e5e5e5;
@gray-darker: #666;
@gray-dark: #999;
// default colors
@text-color: #333;
@border-color: #eee;
@active-color: #e8e8e8;
@background-color: #f8f8f8;
@background-color-light: #fafafa;
``` ```
接着在 postcss.config.js 中引入所需的 postcss 插件,并根据项目需求配置颜色变量,所有可用的颜色变量请参考 [配置文件](https://github.com/youzan/vant/blob/dev/packages/style/var.less) ### 定制方法
```javascript 定制主题分为两步:引入样式源文件和修改样式变量
#### 步骤一. 引入样式源文件
Vant 支持通过 babel 插件按需引入和手动引入两种方式,推荐使用按需引入的方式。
```js
// 在 babel.config.js 中配置按需引入样式源文件
module.exports = { module.exports = {
plugins: [ plugins: [
require('postcss-theme-variables')({ [
vars: { 'import',
red: '#F60', {
gray: '#CCC', libraryName: 'vant',
blue: '#03A9F4' libraryDirectory: 'es',
// 指定样式路径
style: name => `${name}/style/less`
}, },
prefix: '$' 'vant'
}), ]
require('precss')(),
require('postcss-calc')(),
require('autoprefixer')({
browsers: ['Android >= 4.0', 'iOS >= 7']
})
] ]
}; };
``` ```
### 方案二. 本地构建 下面是手动引入的方法:
可以通过在本地构建 style 的方式生成所需的主题
```bash ```js
# 克隆仓库 // 手动引入组件的样式源文件
git clone git@github.com:youzan/vant.git import Button from 'vant/lib/button';
cd packages/style import 'vant/lib/button/style/less';
``` ```
在本地 style 仓库中,修改 src/var.less 中的颜色变量,然后执行以下构建命令,即可生成对应的样式文件 #### 步骤二. 修改样式变量
```bash
npm run build 使用 less 提供的 [modifyVars](http://lesscss.org/usage/#using-less-in-the-browser-modify-variables) 即可对变量进行修改,下面是参考的 webpack 配置。
```js
// webpack.config.js
module.exports = {
rules: [
{
test: /\.less$/,
use: [
// ...other loaders
{
loader: 'less-loader',
options: {
modifyVars: {
red: '#03a9f4',
blue: '#3eaf7c',
orange: '#f08d49',
'text-color': '#111'
}
}
}
]
}
]
};
``` ```