<template>
	<div class="wrapper">
		<!-- header部分 -->
		<header>
			<div class="icon-location-box">
				<div class="icon-location"></div>
			</div>
			<div class="location-text">天津大学北洋园校区<i class="fa fa-caret-down"></i></div>
		</header>
		<!-- search部分 -->
		<!--
	 搜索框部分（此块与search-fixed-top块宽度高度一致，用于当
	 search-fixed-top块固定后，挡住下面块不要窜上去）
	 -->
    <div class="search">
      <!-- 当滚动条超过上面的定位块时，search-fixed-top块变成固定在顶部。 -->
      <div class="search-fixed-top" ref="fixedBox">
        <!-- 搜索框部分中间的白框 -->
        <div class="search-box">
          <i @click="toSearch()" :class="{'fa fa-search': true, 'blue-icon': keyword!==''}"></i>
          <input type="text" v-model="keyword" placeholder="搜索饿了么商家、商品名称" @keydown.enter="toSearch()" >
        </div>
      </div>
    </div>
		<!-- 点餐分类部分 -->
		<ul class="foodtype">
			<li @click="toBusinessList(1)">
				<img src="../assets/img/dcfl01.png">
				<p>美食</p>
			</li>
			<li @click="toBusinessList(2)">
				<img src="../assets/img/dcfl02.png">
				<p>早餐</p>
			</li>
			<li @click="toBusinessList(3)">
				<img src="../assets/img/dcfl03.png">
				<p>跑腿代购</p>
			</li>
			<li @click="toBusinessList(4)">
				<img src="../assets/img/dcfl04.png">
				<p>汉堡披萨</p>
			</li>
			<li @click="toBusinessList(5)">
				<img src="../assets/img/dcfl05.png">
				<p>甜品饮品</p>
			</li>
			<li @click="toBusinessList(6)">
				<img src="../assets/img/dcfl06.png">
				<p>速食简餐</p>
			</li>
			<li @click="toBusinessList(7)">
				<img src="../assets/img/dcfl07.png">
				<p>地方小吃</p>
			</li>
			<li @click="toBusinessList(8)">
				<img src="../assets/img/dcfl08.png">
				<p>米粉面馆</p>
			</li>
			<li @click="toBusinessList(9)">
				<img src="../assets/img/dcfl09.png">
				<p>包子粥铺</p>
			</li>
			<li @click="toBusinessList(10)">
				<img src="../assets/img/dcfl10.png">
				<p>炸鸡炸串</p>
			</li>
		</ul>
		<!-- 横幅广告部分（注意：此处有背景图片） -->
		<div class="banner">
			<h3>品质套餐</h3>
			<p>搭配齐全吃得好</p>
			<a>立即抢购 &gt;</a>
		</div>
		<!-- 超级会员部分 -->
		<div class="supermember">
			<div class="left">
				<img src="../assets/img/super_member.png">
				<h3>超级会员</h3>
				<p>&#8226; 每月享超值权益</p>
			</div>
			<div class="right">
				立即开通 &gt;
			</div>
		</div>
		<!-- 推荐商家部分 -->
		<div class="recommend">
			<div class="recommend-line"></div>
			<p>推荐商家</p>
			<div class="recommend-line"></div>
		</div>
		<!-- 推荐方式部分 -->
		<ul class="recommendtype">
			<li>综合排序<i class="fa fa-caret-down"></i></li>
			<li>距离最近</li>
			<li>销量最高</li>
			<li>筛选<i class="fa fa-filter"></i></li>
		</ul>
		<!-- 推荐商家列表部分 -->
		<ul class="business">
			<li>
				<img src="../assets/img/sj01.png">
				<div class="business-info">
					<div class="business-info-h">
						<h3>万家饺子（软件园E18店）</h3>
						<div class="business-info-like">&#8226;</div>
					</div>
					<div class="business-info-star">
						<div class="business-info-star-left">
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<p>4.9 月售345单</p>
						</div>
						<div class="business-info-star-right">
							蜂鸟专送
						</div>
					</div>
					<div class="business-info-delivery">
						<p>&#165;15起送 | &#165;3配送</p>
						<p>3.22km | 30分钟</p>
					</div>
					<div class="business-info-explain">
						<div>各种饺子</div>
					</div>
					<div class="business-info-promotion">
						<div class="business-info-promotion-left">
							<div class="business-info-promotion-left-incon">新</div>
							<p>饿了么新用户首单立减9元</p>
						</div>
						<div class="business-info-promotion-right">
							<p>2个活动</p>
							<i class="fa fa-caret-down"></i>
						</div>
					</div>
					<div class="business-info-promotion">
						<div class="business-info-promotion-left">
							<div class="business-info-promotion-left-incon" style="background-color: #F1884F;">特</div>
							<p>特价商品5元起</p>
						</div>
					</div>
				</div>
			</li>
			<li>
				<img src="../assets/img/sj02.png">
				<div class="business-info">
					<div class="business-info-h">
						<h3>小锅饭豆腐馆（全运店）</h3>
						<div class="business-info-like">&#8226;</div>
					</div>
					<div class="business-info-star">
						<div class="business-info-star-left">
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<p>4.9 月售345单</p>
						</div>
						<div class="business-info-star-right">
							蜂鸟专送
						</div>
					</div>
					<div class="business-info-delivery">
						<p>&#165;15起送 | &#165;3配送</p>
						<p>3.22km | 30分钟</p>
					</div>
					<div class="business-info-explain">
						<div>各种饺子</div>
					</div>
					<div class="business-info-promotion">
						<div class="business-info-promotion-left">
							<div class="business-info-promotion-left-incon">新</div>
							<p>饿了么新用户首单立减9元</p>
						</div>
						<div class="business-info-promotion-right">
							<p>2个活动</p>
							<i class="fa fa-caret-down"></i>
						</div>
					</div>
					<div class="business-info-promotion">
						<div class="business-info-promotion-left">
							<div class="business-info-promotion-left-incon">特</div>
							<p>特价商品5元起</p>
						</div>
					</div>
				</div>
			</li>
			<li>
				<img src="../assets/img/sj03.png">
				<div class="business-info">
					<div class="business-info-h">
						<h3>麦当劳麦乐送（全运路店）</h3>
						<div class="business-info-like">&#8226;</div>
					</div>
					<div class="business-info-star">
						<div class="business-info-star-left">
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<p>4.9 月售345单</p>
						</div>
						<div class="business-info-star-right">
							蜂鸟专送
						</div>
					</div>
					<div class="business-info-delivery">
						<p>&#165;15起送 | &#165;3配送</p>
						<p>3.22km | 30分钟</p>
					</div>
					<div class="business-info-explain">
						<div>各种饺子</div>
					</div>
					<div class="business-info-promotion">
						<div class="business-info-promotion-left">
							<div class="business-info-promotion-left-incon">新</div>
							<p>饿了么新用户首单立减9元</p>
						</div>
						<div class="business-info-promotion-right">
							<p>2个活动</p>
							<i class="fa fa-caret-down"></i>
						</div>
					</div>
					<div class="business-info-promotion">
						<div class="business-info-promotion-left">
							<div class="business-info-promotion-left-incon">特</div>
							<p>特价商品5元起</p>
						</div>
					</div>
				</div>
			</li>
			<li>
				<img src="../assets/img/sj04.png">
				<div class="business-info">
					<div class="business-info-h">
						<h3>米村拌饭（浑南店）</h3>
						<div class="business-info-like">&#8226;</div>
					</div>
					<div class="business-info-star">
						<div class="business-info-star-left">
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<p>4.9 月售345单</p>
						</div>
						<div class="business-info-star-right">
							蜂鸟专送
						</div>
					</div>
					<div class="business-info-delivery">
						<p>&#165;15起送 | &#165;3配送</p>
						<p>3.22km | 30分钟</p>
					</div>
					<div class="business-info-explain">
						<div>各种饺子</div>
					</div>
					<div class="business-info-promotion">
						<div class="business-info-promotion-left">
							<div class="business-info-promotion-left-incon">新</div>
							<p>饿了么新用户首单立减9元</p>
						</div>
						<div class="business-info-promotion-right">
							<p>2个活动</p>
							<i class="fa fa-caret-down"></i>
						</div>
					</div>
					<div class="business-info-promotion">
						<div class="business-info-promotion-left">
							<div class="business-info-promotion-left-incon">特</div>
							<p>特价商品5元起</p>
						</div>
					</div>
				</div>
			</li>
			<li>
				<img src="../assets/img/sj05.png">
				<div class="business-info">
					<div class="business-info-h">
						<h3>申记串道（中海康城店）</h3>
						<div class="business-info-like">&#8226;</div>
					</div>
					<div class="business-info-star">
						<div class="business-info-star-left">
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<i class="fa fa-star"></i>
							<p>4.9 月售345单</p>
						</div>
						<div class="business-info-star-right">
							蜂鸟专送
						</div>
					</div>
					<div class="business-info-delivery">
						<p>&#165;15起送 | &#165;3配送</p>
						<p>3.22km | 30分钟</p>
					</div>
					<div class="business-info-explain">
						<div>各种饺子</div>
					</div>
					<div class="business-info-promotion">
						<div class="business-info-promotion-left">
							<div class="business-info-promotion-left-incon">新</div>
							<p>饿了么新用户首单立减9元</p>
						</div>
						<div class="business-info-promotion-right">
							<p>2个活动</p>
							<i class="fa fa-caret-down"></i>
						</div>
					</div>
					<div class="business-info-promotion">
						<div class="business-info-promotion-left">
							<div class="business-info-promotion-left-incon">特</div>
							<p>特价商品5元起</p>
						</div>
					</div>
				</div>
			</li>
		</ul>
		<Footer></Footer>
	</div>
</template>

<script>
	//导入共通组件
	import Footer from '../components/Footer.vue';
	export default {
		name: 'Index',
    data(){
      return{
        keyword: ''
      }
    },
		mounted() {
			document.onscroll = () => {
				//获取滚动条位置
				let s1 = document.documentElement.scrollTop;
				let s2 = document.body.scrollTop;
				let scroll = s1 == 0 ? s2 : s1;
				//获取视口宽度
				let width = document.documentElement.clientWidth;

				//获取顶部固定块
				let search = this.$refs.fixedBox;

				if (search) {
					//判断滚动条超过视口宽度的12%时，搜索块变固定定位
					if (scroll > width * 0.12) {
						search.style.position = 'fixed';
						search.style.left = '0';
						search.style.top = '0';
					} else {
						search.style.position = 'static';
					}
				}
			}
		},
		destroyed() {
			//当切换到其他组件时，就不需要document滚动条事件，所以将此事件去掉
			document.onscroll = null;
		},
		components: {
			Footer
		},
		methods: {
			toBusinessList(orderTypeId) {
				this.$router.push({
					path: '/businessList',
					query: {
						orderTypeId: orderTypeId
					}
				});
			},
      toSearch(){
        if(this.keyword==='') return;
        this.$router.push({
          path: '/searchResults',
          query: {
            keyword: this.keyword
          }
        });
      }
		}

	}
</script>

<style scoped>
	/****************** 总容器 ******************/
	.wrapper {
		width: 100%;
		height: 100%;
	}

	/****************** header ******************/
	.wrapper header {
		width: 100%;
		height: 12vw;
		background-color: #01B0F2;
		display: flex;
		align-items: center;
	}

	.icon-location {
		position: relative;
		width: 100%;
		/*先画一个正方形*/
		height: 100%;
		border-radius: 50% 50% 50% 0;
		/*然后将三个角变成圆角*/
		background: #fff;
		transform: rotate(-45deg);
		/*最后，旋转45度*/
	}

	.icon-location:after {
		content: '';
		width: 40%;
		height: 40%;
		margin: 30% 0 0 30%;
		background-color: #01B0F2;
		position: absolute;
		border-radius: 50%;
	}

	.wrapper header .icon-location-box {
		width: 3.5vw;
		height: 3.5vw;
		margin: 0 1vw 0 3vw;
	}

	.wrapper header .location-text {
		font-size: 4.5vw;
		font-weight: 700;
		color: #fff;
	}

	.wrapper header .location-text .fa-caret-down {
		margin-left: 1vw;
	}

	/****************** search ******************/
	.wrapper .search {
		width: 100%;
		height: 13vw;
	}

	.wrapper .search .search-fixed-top {
		width: 100%;
		height: 13vw;
		background-color: #01B0F2;
		display: flex;
		justify-content: center;
		align-items: center;
	}

	.wrapper .search .search-fixed-top .search-box {
		width: 90%;
		height: 9vw;
		background-color: #fff;
		border-radius: 4vw;
		display: flex;
		justify-content: center;
		align-items: center;
		font-size: 3.5vw;
		color: #AEAEAE;
		font-family: "宋体";
		/*此样式是让文本选中状态无效*/
		user-select: none;
	}

  .wrapper .search .search-fixed-top .search-box input{
    border: none;
    outline: none;
    height: 4vw;
    font-size: 3vw;
  }

	.wrapper .search .search-fixed-top .search-box .fa-search {
		margin-right: 1vw;
	}

  .blue-icon {
    color: #01B0F2;
  }

	/****************** 点餐分类部分 ******************/
	.wrapper .foodtype {
		width: 100%;
		height: 48vw;
		display: flex;
		flex-wrap: wrap;
		justify-content: space-around;
		/*要使用align-content。10个子元素将自动换行为两行，而且两行作为一个整体垂直居中*/
		align-content: center;
	}

	.wrapper .foodtype li {
		/*一共10个子元素，通过计算，子元素宽度在16.7 ~ 20 之间，才能保证换两行*/
		width: 18vw;
		height: 20vw;
		display: flex;
		/*弹性盒子主轴方向设为column，然后仍然是垂直水平方向居中*/
		flex-direction: column;
		justify-content: center;
		align-items: center;
		user-select: none;
		cursor: pointer;
	}

	.wrapper .foodtype li img {
		width: 13vw;
		/*视频讲解时高度设置为12vw，实际上设置为10.3vw更佳*/
		height: 11.3vw;
	}

	.wrapper .foodtype li p {
		font-size: 3.2vw;
		color: #666;
	}

	/****************** 横幅广告部分 ******************/
	.wrapper .banner {
		/**
	 * 设置容器宽度95%，然后水平居中，这样两边留白; 
	 * 这里不能用padding，因为背景图片也会覆盖padding
	 */
		width: 95%;
		margin: 0 auto;
		height: 29vw;
		/*此三个样式组合，可以保证背景图片充满整个容器*/
		background-image: url(../assets/img/index_banner.png);
		background-repeat: no-repeat;
		background-size: cover;
		box-sizing: border-box;
		padding: 2vw 6vw;
		border-radius: 3vw;
	}

	.wrapper .banner h3 {
		font-size: 4.2vw;
		margin-bottom: 1.2vw;
	}

	.wrapper .banner p {
		font-size: 3.4vw;
		color: #666;
		margin-bottom: 2.4vw;
	}

	.wrapper .banner a {
		font-size: 3vw;
		color: #C79060;
		font-weight: 700;
	}

	/****************** 超级会员部分 ******************/
	.wrapper .supermember {
		/*这里也设置容器宽度95%，不能用padding，因为背景色也会充满padding*/
		width: 95%;
		margin: 0 auto;
		height: 11.5vw;
		background-color: #FEEDC1;
		margin-top: 1.3vw;
		border-radius: 2px;
		color: #644F1B;
		display: flex;
		justify-content: space-between;
		align-items: center;
		border-radius: 2vw;
	}

	.wrapper .supermember .left {
		display: flex;
		align-items: center;
		margin-left: 4vw;
		user-select: none;
	}

	.wrapper .supermember .left img {
		width: 6vw;
		height: 6vw;
		margin-right: 2vw;
	}

	.wrapper .supermember .left h3 {
		font-size: 4vw;
		margin-right: 2vw;
	}

	.wrapper .supermember .left p {
		font-size: 3vw;
	}

	.wrapper .supermember .right {
		font-size: 3vw;
		margin-right: 4vw;
		cursor: pointer;
	}

	/****************** 推荐商家部分 ******************/
	.wrapper .recommend {
		width: 100%;
		height: 14vw;
		display: flex;
		justify-content: center;
		align-items: center;
	}

	.wrapper .recommend .recommend-line {
		width: 6vw;
		height: 0.2vw;
		background-color: #888;
	}

	.wrapper .recommend p {
		font-size: 4vw;
		margin: 0 4vw;
	}

	/****************** 推荐方式部分 ******************/
	.wrapper .recommendtype {
		width: 100%;
		height: 5vw;
		margin-bottom: 5vw;
		display: flex;
		justify-content: space-around;
		align-items: center;
	}

	.wrapper .recommendtype li {
		font-size: 3.5vw;
		color: #555;
	}

	/****************** 推荐商家列表部分 ******************/
	.wrapper .business {
		width: 100%;
		padding-bottom: 14vw;
	}

	.wrapper .business li {
		width: 100%;
		box-sizing: border-box;
		padding: 2.5vw;
		user-select: none;
		border-bottom: solid 1px #DDD;
		display: flex;
	}

	.wrapper .business li img {
		width: 18vw;
		height: 18vw;
		border-radius: 2vw;
	}

	.wrapper .business li .business-info {
		width: 100%;
		box-sizing: border-box;
		padding-left: 3vw;
	}

	.wrapper .business li .business-info .business-info-h {
		display: flex;
		justify-content: space-between;
		align-items: center;
		margin-bottom: 2vw;
	}

	.wrapper .business li .business-info .business-info-h h3 {
		font-size: 4vw;
		color: #333;
	}

	.wrapper .business li .business-info .business-info-h .business-info-like {
		width: 1.6vw;
		height: 3.4vw;
		background-color: #666;
		color: #fff;
		font-size: 4vw;
		margin-right: 4vw;
		display: flex;
		justify-content: center;
		align-items: center;
	}

	.wrapper .business li .business-info .business-info-star {
		display: flex;
		justify-content: space-between;
		align-items: center;
		margin-bottom: 2vw;
		font-size: 3.1vw;
	}

	.wrapper .business li .business-info .business-info-star .business-info-star-left {
		display: flex;
		align-items: center;
	}

	.wrapper .business li .business-info .business-info-star .business-info-star-left .fa-star {
		color: #FEC80E;
		margin-right: 0.5vw;
	}

	.wrapper .business li .business-info .business-info-star .business-info-star-left p {
		color: #666;
		margin-left: 1vw;
	}

	.wrapper .business li .business-info .business-info-star .business-info-star-right {
		background-color: #01B0F2;
		color: #fff;
		font-size: 2.4vw;
		border-radius: 2px;
		padding: 0 0.6vw;
	}

	.wrapper .business li .business-info .business-info-delivery {
		display: flex;
		justify-content: space-between;
		align-items: center;
		margin-bottom: 2vw;
		color: #666;
		font-size: 3.1vw;
	}

	.wrapper .business li .business-info .business-info-explain {
		display: flex;
		align-items: center;
		margin-bottom: 3vw;
	}

	.wrapper .business li .business-info .business-info-explain div {
		border: solid 1px #DDD;
		font-size: 2.8vw;
		color: #666;
		border-radius: 3px;
		padding: 0 0.1vw;
	}

	.wrapper .business li .business-info .business-info-promotion {
		display: flex;
		justify-content: space-between;
		align-items: center;
		margin-bottom: 1.8vw;
	}

	.wrapper .business li .business-info .business-info-promotion .business-info-promotion-left {
		display: flex;
		align-items: center;
	}

	.wrapper .business li .business-info .business-info-promotion .business-info-promotion-left .business-info-promotion-left-incon {
		width: 4vw;
		height: 4vw;
		background-color: #70BC46;
		border-radius: 3px;
		font-size: 3vw;
		color: #fff;
		display: flex;
		justify-content: center;
		align-items: center;
	}

	.wrapper .business li .business-info .business-info-promotion .business-info-promotion-left p {
		color: #666;
		font-size: 3vw;
		margin-left: 2vw;
	}

	.wrapper .business li .business-info .business-info-promotion .business-info-promotion-right {
		display: flex;
		align-items: center;
		font-size: 2.5vw;
		color: #999;
	}

	.wrapper .business li .business-info .business-info-promotion .business-info-promotion-right p {
		margin-right: 2vw;
	}
</style>