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黄少君
234
pages/index/components/public/LiveCards.vue
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234
pages/index/components/public/LiveCards.vue
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<!--
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@name: LiveCards
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@author: kahu4
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@date: 2023-11-01 17:04
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@description：LiveCards
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@update: 2023-11-01 17:04
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-->
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<script setup>
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import { computed, onMounted, ref, unref } from "vue";
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import { useSystem } from "@/hooks/useSystem";
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const liveCardList = [
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{
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id: 1,
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isLive: true,
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title: '买一送一',
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background: 'https://alipic.lanhuapp.com/XDSlicePNGMAXc18a81ef73fc74664ef83df1de77da21f12619ff86653931ed809710b31c2e82.png',
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peopleNum: 168
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},
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{
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id: 2,
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isLive: false,
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title: '买一送二',
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background: 'https://alipic.lanhuapp.com/XDSlicePNGMAXc18a81ef73fc74664ef83df1de77da21f12619ff86653931ed809710b31c2e82.png',
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peopleNum: 16858
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},
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{
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id: 3,
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isLive: true,
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title: '买一送三',
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background: 'https://alipic.lanhuapp.com/XDSlicePNGMAXc18a81ef73fc74664ef83df1de77da21f12619ff86653931ed809710b31c2e82.png',
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peopleNum: 22343
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},
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{
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id: 4,
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isLive: true,
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title: '买一送三',
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background: 'https://alipic.lanhuapp.com/XDSlicePNGMAXc18a81ef73fc74664ef83df1de77da21f12619ff86653931ed809710b31c2e82.png',
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peopleNum: 22343
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},
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{
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id: 4,
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isLive: true,
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title: '买一送三',
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background: 'https://alipic.lanhuapp.com/XDSlicePNGMAXc18a81ef73fc74664ef83df1de77da21f12619ff86653931ed809710b31c2e82.png',
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peopleNum: 22343
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},
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{
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id: 4,
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isLive: true,
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title: '买一送三',
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background: 'https://alipic.lanhuapp.com/XDSlicePNGMAXc18a81ef73fc74664ef83df1de77da21f12619ff86653931ed809710b31c2e82.png',
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peopleNum: 22343
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}
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]
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const {getSystemInfo} = useSystem();
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// ============================== 设置card选中相关 ================================
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const current = ref(1) // 当前选中的索引
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const systemInfo = ref({windowWidth: 0}) // 系统信息
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const scrollLeft = ref(0) // 当前滑动到的位置
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const scrollWidth = ref(0) // 滑轨总大小
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// 计算单张宽度
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const cardWidth = computed(() => {
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if (unref(systemInfo).windowWidth <= 0) return 0
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return Math.floor((unref(systemInfo).windowWidth) / 3) - 25
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})
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/**
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* 滑动
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* @param e
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*/
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function handleScroll(e) {
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scrollLeft.value = e.detail.scrollLeft
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scrollWidth.value = e.detail.scrollWidth
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setCurrent()
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}
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/**
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* 设置选中card
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* @returns {number}
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*/
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function setCurrent() {
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// 小于单张宽度直接设置1选中第2张
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if (scrollLeft.value <= cardWidth.value) return current.value = 1
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// 否则 current = （当前位置 / 单张宽度）= 当前屏幕左侧顶到图片的索引
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// +1选中后一张
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current.value = Math.floor(scrollLeft.value / cardWidth.value) + 1
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}
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function clickCard() {
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}
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onMounted(async () => {
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systemInfo.value = await getSystemInfo()
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})
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</script>
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<template>
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<view class="live-cards">
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<scroll-view
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class="live-cards__inner"
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scroll-x
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@scroll="handleScroll"
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>
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<view class="track">
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<view
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:class="{'card-item':true,'current':index===current}"
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v-for="(item,index) in liveCardList"
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:key="item.id"
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@click="clickCard"
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>
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<image
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class="live-img"
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:src="item.background"
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mode="aspectFill"
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/>
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<view class="mask">
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<view :class="{'status-box':true}">
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<view :class="{status:true,close:item.isLive===false}">
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{{ item.isLive ? '直播中' : '暂未开始' }}
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</view>
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<view class="number">
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{{ item.isLive ? item.peopleNum : 0 }}人
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</view>
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</view>
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<view class="title">
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{{ item.title }}
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</view>
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</view>
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</view>
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</view>
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</scroll-view>
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</view>
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</template>
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<style
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scoped
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lang="scss"
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>
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.live-cards {
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width: 100%;
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padding: 70rpx 0;
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aspect-ratio: 750/480;
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&__inner {
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width: 100%;
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height: 100%;
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.track {
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height: 100%;
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display: flex;
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align-items: center;
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.card-item {
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flex-shrink: 0;
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width: calc(100% / 3);
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height: 80%;
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background: #fff;
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border-radius: 15rpx;
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overflow: hidden;
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position: relative;
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transition: all .3s;
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scale: 1;
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z-index: 1;
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.live-img {
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width: 100%;
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height: 100%;
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}
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.mask {
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position: absolute;
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top: 0;
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left: 0;
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z-index: 10;
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width: 100%;
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height: 100%;
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padding: 35rpx 20rpx;
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box-sizing: border-box;
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color: #fff;
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font-size: 18rpx;
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.status-box {
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position: absolute;
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display: flex;
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align-items: center;
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top: 18rpx;
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left: 20rpx;
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height: 33rpx;
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line-height: 33rpx;
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border-radius: 33rpx;
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background: rgba(0, 0, 0, 0.6);
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.status {
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background: #ee6d46;
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border-radius: 33rpx;
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padding: 0 10rpx;
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}
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.close {
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background: grey;
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}
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.number {
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padding: 0 1rpx;
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}
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}
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.title {
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font-size: 28rpx;
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position: absolute;
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width: 100%;
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color: #fff;
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left: 20rpx;
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bottom: 20rpx;
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}
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}
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}
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.current {
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scale: 1.2 1.2;
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z-index: 11;
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}
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}
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}
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}
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</style>
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