mirror of https://github.com/ElemeFE/element
123 lines
3.5 KiB
Vue
123 lines
3.5 KiB
Vue
<template>
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<el-color-picker
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class="theme-picker"
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popper-class="theme-picker-dropdown"
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v-model="theme"></el-color-picker>
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</template>
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<style>
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.theme-picker {
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height: 80px;
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display: inline-block;
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@utils-vertical-center;
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}
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.theme-picker .el-color-picker__trigger {
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vertical-align: middle;
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}
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.theme-picker-dropdown .el-color-dropdown__link-btn {
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display: none;
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}
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</style>
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<script>
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import { version } from 'main/index.js';
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const ORIGINAL_THEME = '#409EFF';
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export default {
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data() {
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return {
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chalk: '',
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theme: ORIGINAL_THEME
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};
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},
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watch: {
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theme(val, oldVal) {
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if (typeof val !== 'string') return;
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const themeCluster = this.getThemeCluster(val.replace('#', ''));
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const originalCluster = this.getThemeCluster(oldVal.replace('#', ''));
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const handler = () => {
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const originalCluster = this.getThemeCluster(ORIGINAL_THEME.replace('#', ''));
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let newStyle = this.updateStyle(this.chalk, originalCluster, themeCluster);
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let styleTag = document.getElementById('theme-style');
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if (!styleTag) {
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styleTag = document.createElement('style');
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styleTag.setAttribute('id', 'theme-style');
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document.head.appendChild(styleTag);
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}
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styleTag.innerText = newStyle;
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};
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if (!this.chalk) {
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this.getChalkString(handler);
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} else {
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handler();
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}
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const styles = [].slice.call(document.querySelectorAll('style'))
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.filter(style => {
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const text = style.innerText;
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return new RegExp(oldVal).test(text) && !/Chalk Variables/.test(text);
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});
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styles.forEach(style => {
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const { innerText } = style;
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if (typeof innerText !== 'string') return;
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style.innerText = this.updateStyle(innerText, originalCluster, themeCluster);
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});
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}
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},
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methods: {
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updateStyle(style, oldCluster, newCluster) {
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let newStyle = style;
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oldCluster.forEach((color, index) => {
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newStyle = newStyle.replace(new RegExp(color, 'ig'), newCluster[index]);
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});
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return newStyle;
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},
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getChalkString(callback) {
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const xhr = new XMLHttpRequest();
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xhr.onreadystatechange = () => {
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if (xhr.readyState === 4 && xhr.status === 200) {
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this.chalk = xhr.responseText.replace(/@font-face{[^}]+}/, '');
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callback();
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}
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};
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xhr.open('GET', `https://unpkg.com/element-ui@${ version }/lib/theme-chalk/index.css`);
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xhr.send();
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},
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getThemeCluster(theme) {
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const tintColor = (color, tint) => {
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let red = parseInt(color.slice(0, 2), 16);
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let green = parseInt(color.slice(2, 4), 16);
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let blue = parseInt(color.slice(4, 6), 16);
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if (tint === 0) {
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return [red, green, blue].join(',');
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} else {
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red += Math.round(tint * (255 - red));
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green += Math.round(tint * (255 - green));
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blue += Math.round(tint * (255 - blue));
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red = red.toString(16);
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green = green.toString(16);
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blue = blue.toString(16);
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return `#${ red }${ green }${ blue }`;
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}
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};
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const clusters = [theme];
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for (let i = 0; i <= 9; i++) {
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clusters.push(tintColor(theme, Number((i / 10).toFixed(2))));
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}
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return clusters;
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}
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}
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};
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</script> |