element-ui动态换肤
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2022-07-03 11:45:40
通过在ElementUI的框架基础上使用ColorPicker颜色选择器进行动态换肤，多余的话就不说了下述代码能够直接使用。 展示详情
Element 动态换肤
通过在ElementUI的框架基础上使用ColorPicker颜色选择器进行动态换肤，多余的话就不说了下述代码能够直接使用。
动态换肤效果图：
<template>
<div>
<h3>Element 动态换肤</h3>
<el-button type="primary">展示详情</el-button>
<el-tooltip effect="dark" content="皮肤" placement="bottom">
<el-color-picker
v-model="theme"
class="theme-picker"
size="small"
popper-class="theme-picker-dropdown"
/>
</el-tooltip>
<showDetails ref="showDetails"></showDetails>
</div>
</template>
<script>
const version = require('element-ui/package.json').version // element-ui version from node_modules
const ORIGINAL_THEME = '#409EFF' // default color
export default {
data () {
return {
chalk: '', // content of theme-chalk css
theme: ORIGINAL_THEME
}
},
watch: {
theme (val, oldVal) {
if (typeof val !== 'string') return
const themeCluster = this.getThemeCluster(val.replace('#', ''))
const originalCluster = this.getThemeCluster(oldVal.replace('#', ''))
const getHandler = (variable, id) => {
return () => {
const originalCluster = this.getThemeCluster(
ORIGINAL_THEME.replace('#', '')
)
const newStyle = this.updateStyle(
this[variable],
originalCluster,
themeCluster
)
let styleTag = document.getElementById(id)
if (!styleTag) {
styleTag = document.createElement('style')
styleTag.setAttribute('id', id)
document.head.appendChild(styleTag)
}
styleTag.innerText = newStyle
}
}
const chalkHandler = getHandler('chalk', 'chalk-style')
if (!this.chalk) {
const url = `https://unpkg.com/element-ui@${version}/lib/theme-chalk/index.css`
this.getCSSString(url, chalkHandler, 'chalk')
} else {
chalkHandler()
}
const styles = [].slice
.call(document.querySelectorAll('style'))
.filter(style => {
const text = style.innerText
return (
new RegExp(oldVal, 'i').test(text) && !/Chalk Variables/.test(text)
)
})
styles.forEach(style => {
const { innerText } = style
if (typeof innerText !== 'string') return
style.innerText = this.updateStyle(
innerText,
originalCluster,
themeCluster
)
})
this.$message({
message: '换肤成功',
type: 'success'
})
}
},
methods: {
updateStyle (style, oldCluster, newCluster) {
let newStyle = style
oldCluster.forEach((color, index) => {
newStyle = newStyle.replace(new RegExp(color, 'ig'), newCluster[index])
})
return newStyle
},
getCSSString (url, callback, variable) {
const xhr = new XMLHttpRequest()
xhr.onreadystatechange = () => {
if (xhr.readyState === 4 && xhr.status === 200) {
this[variable] = xhr.responseText.replace(/@font-face{[^}]+}/, '')
callback()
}
}
xhr.open('GET', url)
xhr.send()
},
getThemeCluster (theme) {
const tintColor = (color, tint) => {
let red = parseInt(color.slice(0, 2), 16)
let green = parseInt(color.slice(2, 4), 16)
let blue = parseInt(color.slice(4, 6), 16)
if (tint === 0) {
// when primary color is in its rgb space
return [red, green, blue].join(',')
} else {
red += Math.round(tint * (255 - red))
green += Math.round(tint * (255 - green))
blue += Math.round(tint * (255 - blue))
red = red.toString(16)
green = green.toString(16)
blue = blue.toString(16)
return `#${red}${green}${blue}`
}
}
const shadeColor = (color, shade) => {
let red = parseInt(color.slice(0, 2), 16)
let green = parseInt(color.slice(2, 4), 16)
let blue = parseInt(color.slice(4, 6), 16)
red = Math.round((1 - shade) * red)
green = Math.round((1 - shade) * green)
blue = Math.round((1 - shade) * blue)
red = red.toString(16)
green = green.toString(16)
blue = blue.toString(16)
return `#${red}${green}${blue}`
}
const clusters = [theme]
for (let i = 0; i <= 9; i++) {
clusters.push(tintColor(theme, Number((i / 10).toFixed(2))))
}
clusters.push(shadeColor(theme, 0.1))
return clusters
}
}
}
</script>
以上就是我对Element换肤的理解,如果文章由于我学识浅薄,导致您发现有严重谬误的地方,请一定在评论中指出,我会在第一时间修正我的文章,以避免误人子弟。
本文地址：https://blog.csdn.net/qq_42784165/article/details/107301758
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