【sgPhotoPlayer】自定义组件：图片预览，支持点击放大、缩小、旋转图片

特性：

1. 支持设置初始索引值
2. 支持显示标题、日期、大小、当前图片位置
3. 支持无限循环切换轮播
4. 支持鼠标滑轮滚动、左右键、上下键、PageUp、PageDown、Home、End操作切换图片
5. 支持Esc关闭窗口

 sgPhotoPlayer源码

<template><div :class="$options.name" v-if="visible"><div class="swiper-container"><el-carouselclass="image-swiper"ref="carousel":initial-index="currentIndex":autoplay="false":height="'100%'":indicator-position="swiperItems.length <= 1 ? 'none' : ''":arrow="swiperItems.length <= 1 ? 'never' : ''"@change="(idx) => (currentIndex = idx)"><el-carousel-item v-for="(a, $i) in swiperItems" :key="$i"><el-imagedraggable="false"style="width: 600px; height: 400px":src="a.sm":preview-src-list="swiperItems.map((v) => v.lg)":initial-index="$i":fit="'cover'"></el-image></el-carousel-item></el-carousel><div class="desc"><label class="number">当前位置：{{ currentIndex + 1 }}/{{ swiperItems.length }}</label><labelclass="title":title="`${swiperItems[currentIndex].title}(${swiperItems[currentIndex].size})`">{{ swiperItems[currentIndex].title }}({{ swiperItems[currentIndex].size }})</label><label class="date">{{ swiperItems[currentIndex].date }}</label></div></div><el-tooltip:content="`关闭`":effect="`light`":enterable="false":placement="`top-start`":popper-class="`sg-el-tooltip`":transition="`none`"><el-buttonclass="sg-closeModalBtn"type="primary"icon="el-icon-close"@click="visible = false"circle/></el-tooltip><div class="bg" @click="visible = false"></div></div>
</template><script>
export default {name: "sgPhotoPlayer",data() {return {currentIndex: 0,showBigImg: false,loading: false, //是否加载中visible: false, //是否显示swiperItems: [/*  {title:`标题`,date:`时间`,size:`文件大小`,sm: "static/img/sm/1.jpg",//小图路径lg: "static/img/lg/1.jpg",//大图路径}, */],};},props: ["data","value", //是否显示],watch: {value: {handler(d) {this.visible = d;},deep: true,immediate: true,},visible(d) {this.$emit("input", d);},data: {handler(newValue, oldValue) {//console.log('深度监听：', newValue, oldValue);if (newValue && Object.keys(newValue).length) {this.currentIndex = newValue.currentIndex; //默认显示的图片索引this.swiperItems = newValue.photos;}},deep: true, //深度监听immediate: true, //立即执行},},mounted() {this.addEvents();},destroyed() {this.removeEvents();},methods: {addEvents(d) {this.removeEvents();addEventListener("mousewheel", this.mousewheel);addEventListener("keydown", this.keydown);addEventListener("keyup", this.keyup);},removeEvents(d) {removeEventListener("mousewheel", this.mousewheel);removeEventListener("keydown", this.keydown);removeEventListener("keyup", this.keyup);},mousewheel(e) {this.showBigImg = Boolean(document.querySelector(`.el-image-viewer__mask`));if (this.showBigImg) return;if (e.deltaY < 0) return this.$refs.carousel.prev();if (e.deltaY > 0) return this.$refs.carousel.next();},keydown(e) {let key = e.key.toLocaleLowerCase();if (["escape","home","end","pageup","arrowup","arrowleft","pagedown","arrowdown","arrowright",].includes(key)) {e.preventDefault();return false;}},keyup(e) {this.showBigImg = Boolean(document.querySelector(`.el-image-viewer__mask`));let key = e.key.toLocaleLowerCase();if (["escape", "home", "end", "pageup", "arrowup", "pagedown", "arrowdown"].includes(key) &&this.showBigImg)return;switch (key) {case "escape":this.visible = false;break;case "home":this.$refs.carousel.setActiveItem(0);break;case "end":this.$refs.carousel.setActiveItem(this.swiperItems.length - 1);break;case "pageup":case "arrowup":case "arrowleft":this.$refs.carousel.prev();break;case "pagedown":case "arrowdown":case "arrowright":this.$refs.carousel.next();break;}},},
};
</script><style lang="scss" scoped>
.sgPhotoPlayer {position: fixed;left: 0;top: 0;width: 100%;height: 100%;z-index: 2000;display: flex;justify-content: center;align-items: center;.swiper-container {position: absolute;width: 600px;height: 450px;margin: auto;top: 0;left: 0;right: 0;bottom: 0;.image-swiper {width: 100%;height: 100%;overflow: hidden;>>> .el-carousel__container {.el-carousel__arrow,.el-carousel__item {transition: 0.382s !important;}.el-carousel__arrow {// transform: translateY(-40px);}.el-carousel__item {display: flex;justify-content: center;flex-direction: column;}}}.desc {width: 100%;display: flex;justify-content: space-between;align-items: center;flex-wrap: nowrap;box-sizing: border-box;margin: auto;/*文本阴影*/color: white;text-shadow: 1px 1px 1px black;line-height: 1.6;& > * {font-family: "Microsoft YaHei", "DIN-Light";font-weight: normal;font-size: 14px !important;white-space: nowrap;/*单行省略号*/overflow: hidden;white-space: nowrap;text-overflow: ellipsis;}.number {flex-shrink: 0;width: 140px;}.title {box-sizing: border-box;padding: 0 10px;}.date {flex-shrink: 0;width: 140px;}}}.bg {background-color: #000000cc;width: 100%;height: 100%;position: absolute;left: 0;top: 0;z-index: -1;}
}
</style>

应用

// 打开图片openPhoto(d) {this.photoData= {currentIndex: this.photos.findIndex((v) => v.ID == d.ID), //当前图片索引值photos: this.photos.map((v) => ({sm: v.smURL,//小图路径lg: v.lgURL,//大图路径title: this.$g.getFileFullName(v),//标题date: v.GXSJ,//时间size: this.$g.getFileSize(v),//文件大小})),};this.showPhotoPlayer = true;},

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