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配置安装

Color-Thief 安装包使用文档

yarn add colorthief -S // npm install colorthief --save

代码

<template><div class="img-thief"><div class="container"><div class="thief-item" v-for="(item, index) in imgList" :key="item"><img draggable="false" :src="item" alt="" @contextmenu.prevent @mouseenter="handleMouseEnter($event.target, index)" @mouseleave="handleMouseLeave($event.target, index)" :style="{ opacity: index === hoverIndex ? 1 : hoverIndex === -1 ? 1 : 0.2 }" /></div></div></div>
</template>
<script>
import ColorThief from 'ColorThief';
const colorThief = new ColorThief();
export default {data() {return {imgList: [require('@/assets/thief/1.jpg'), require('@/assets/thief/2.jpg'), require('@/assets/thief/3.jpg'), require('@/assets/thief/4.jpg')],hoverIndex: -1,};},methods: {handleMouseEnter(item, index) {let html = document.documentElement;this.hoverIndex = index;const thiefColors = colorThief.getPalette(item, 3);const mapThiefColors = thiefColors.map((color) => `rgb(${color[0]},${color[1]},${color[2]})`);html.style.setProperty('--thief-bg-color1', mapThiefColors[0]);html.style.setProperty('--thief-bg-color2', mapThiefColors[1]);html.style.setProperty('--thief-bg-color3', mapThiefColors[2]);},handleMouseLeave() {let html = document.documentElement;this.hoverIndex = -1;html.style.setProperty('--thief-bg-color1', '#fff');html.style.setProperty('--thief-bg-color2', '#fff');html.style.setProperty('--thief-bg-color3', '#fff');},},
};
</script><style lang="scss" scoped>
.img-thief {width: 100%;height: 100%;display: grid;place-items: center;background: linear-gradient(to top, var(--thief-bg-color1), var(--thief-bg-color2), var(--thief-bg-color3));
}
.container {width: 800px;height: 800px;
}
.thief-item {width: 370px;height: 370px;margin-left: 20px;margin-top: 20px;float: left;box-sizing: border-box;border: 4px solid transparent;&:hover {border: 4px solid #fff;cursor: pointer;transform: translateZ(10px) scale(1.02);transition: all 0.8s;}img {width: 100%;height: 100%;user-select: none;display: block;}
}
</style>

variable.scss 定义全局变量

html {--thief-bg-color1: #fff;--thief-bg-color2: #fff;--thief-bg-color3: #fff;
}