<template>
	<view class="topnav">
		<view :class="{ 'header_fixed': navFixed, 'header_absolute': type == 'transparent', 'header_shadow': navShadow, 'header_colorWhite': isWhite, themeBgColor: themeBgColor}"
		 :style="{ paddingTop: statusBarHeight + 'px', backgroundImage: navBgColor, color: navFontColor, opacity: transparentValue }">
			<view class="header_content">
				<view class="header_left_box">
					<slot name="left">
						<view class="header_left_info" :class="{ 'header_btnMongol':isTwoBtn,'header_colorWhite_btnMongol': isWhite && isTwoBtn}"v-if="back || $slots.left || home">
							<view class="header_left_back" :class="{'header_btnMongol_left_back':isTwoBtn}" v-if="back && !firstPage">
								<image v-if="!isblack" class="header_icon" @click="toback" src="/static/zhouWei-navBar/njdts-zy-zuojiantou-bai.png" mode="aspectFit"></image>
								<image v-if="isblack" class="header_icon" @click="toback" src="/static/zhouWei-navBar/njdts-zy-zuojiantou-hei.png" mode="aspectFit"></image>
								<view class="zjx"></view>
								<image class="header_icon" @click="toindex" src="/static/zhouWei-navBar/njdts-zy-zhuye-hei.png" v-if="isblack" mode="aspectFit"></image>
								<image class="header_icon" @click="toindex" src="/static/zhouWei-navBar/njdts-zy-zhuye-bai.png" v-if="!isblack" mode="aspectFit"></image>
							</view>
							<text class="header_left_line" :class="{'header_colorWhite_left_line': isWhite}" v-if="isTwoBtn"></text>
							<view class="header_left_home" :class="{'header_btnMongol_left_home':isTwoBtn}" v-if="(firstPage && back) || home"
							 @click="onBackHome">
								<image class="header_icon" v-if="isWhite" src="/static/zhouWei-navBar/icon_home_white.png" mode="aspectFit"></image>
								<image class="header_icon" v-else src="/static/zhouWei-navBar/icon_home_black.png" mode="aspectFit"></image>
							</view>
						</view>
					</slot>
					<view class="header_title" v-if="!titleCenter && ($slots.default || navTitle)" :style="{color: navFontColor}">
						<slot><text :style="{color: navFontColor}">{{ navTitle }}</text></slot>
					</view>
				</view>
				<view class="sy-tq" @click="nato('/pages/keliu/keliu')">
					<view class="tb"><image class="img" :src="gettqImg(cond_code)" mode=""></image></view>
					<view class="wz">
						<text class="t1">{{ tmp }}</text>
						<text class="t2">℃</text>
					</view>
				</view>
				<!-- <view class="klinfo">
					<swiper :autoplay="true" :interval="4000" :duration="1000" easing-function="linear">
						<swiper-item v-for="(el,ind) in jqdatas" v-if="ind<3" >
							<view class="swiper-item">
								<view class="kltitle">{{el.name}}</view>
								<view class="kltit">
									<view class="klvalue">当前客流：</view>
									<view class="klvalue">{{el.value}}人</view>
								</view>
							</view>
						</swiper-item>
					</swiper>
				</view> -->
				<view class="header_title header_title_center" v-if="titleCenter && ($slots.default || navTitle)" :style="{color: navFontColor}">
					<slot><text :style="{color: navFontColor}">{{ navTitle }}</text></slot>
				</view>
				<view class="header_right_info">
					<slot name="right"></slot>
				</view>
			</view>
		</view>
		<view class="header_transparentFixed header_fixed" v-if="type == 'transparentFixed'" :style="{ paddingTop: statusBarHeight + 'px', color: navTransparentFixedFontColor, opacity: 1 - transparentValue, zIndex: transparentValue < 0.3 ? 100 : 90 }">
			<view class="header_content">
				<view class="header_left_box">
					<slot name="transparentFixedLeft">
						<view class="header_left_info header_transparentFixed_left_info" :class="{'header_transparentFixed_colorWhite_left_info': isWhite}"
						 v-if="back || $slots.left || home">
							<view class="header_left_back" :class="{'header_btnMongol_left_back':isTwoBtn}" v-if="back && !firstPage" @click="onBackPage">
								<image class="header_icon" v-if="isWhite" src="/static/zhouWei-navBar/icon_back_white.png" mode="aspectFit"></image>
								<image class="header_icon" v-else src="/static/zhouWei-navBar/icon_back_black.png" mode="aspectFit"></image>
							</view>
							<text class="header_left_line" v-if="isTwoBtn"></text>
							<view class="header_left_home" :class="{'header_btnMongol_left_home':isTwoBtn}" v-if="(firstPage && back) || home"
							 @click="onBackHome">
								<image class="header_icon" v-if="isWhite" src="/static/zhouWei-navBar/icon_home_white.png" mode="aspectFit"></image>
								<image class="header_icon" v-else src="/static/zhouWei-navBar/icon_home_black.png" mode="aspectFit"></image>
							</view>
						</view>
					</slot>
					<view class="header_title" v-if="!titleCenter && (navTitle || $slots.transparentFixed)" :style="{ color: navTransparentFixedFontColor}">
						<slot name="transparentFixed">
							<text :style="{color: navTransparentFixedFontColor}">{{ navTitle }}</text>
						</slot>
					</view>
				</view>
				<view class="header_title header_title_center" v-if="titleCenter && (navTitle || $slots.transparentFixed)" :style="{color: navTransparentFixedFontColor}">
					<slot name="transparentFixed"><text :style="{color: navTransparentFixedFontColor}">{{ navTitle }}</text></slot>
				</view>
				<view class="header_right_info">
					<slot name="transparentFixedRight"></slot>
				</view>
			</view>
		</view>
		<view v-if="type == 'fixed'" :style="{ paddingTop: statusBarHeight + 'px' }">
			<view class="header_station"></view>
		</view>
	</view>
</template>
<script>
	// 主页页面的页面路径
	// 关联功能：打开的页面只有一个的时候右上角自动显示返回首页按钮，下面这个数组是排除显示返回首页的页面。
	// 主页使用场景：小程序分享出去的页面，用户点击开是分享页面，很多情况下是没有返回首页按钮的
	const mainPagePath = ['pages/navList', 'pages/demo6'];
	//返回首页的地址
	const homePath = '/pages/index/index';
	//白色表达值
	const whiteList = ['#FFF', '#FFFFFF', 'white', 'rgb(255,255,255)', 'rgba(255,255,255,1)'];
	export default {
		props: {
			tmp : {
				type: String,
				default: function() {
					return '';
				}
			},
			cond_code : {
				type: String,
				default: function() {
					return '';
				}
			},
			jqdatas : [],
			//是否显示返回按钮
			// 1000 显示返回按钮
			// 2000 不显示返回按钮
			// 3000 自定义返回按钮方法，点击返回箭头后会发送一个backClick事件
			isblack:{
				type: Boolean,
				default: function() {
					return false;
				}
			},
			backState: {
				default: function() {
					return 1000;
				}
			},
			//是否显示返回首页按钮
			home: {
				type: Boolean,
				default: function() {
					return false;
				}
			},
			//导航背景色，支持渐变
			bgColor: {
				type: [String, Array],
				default: function() {
					return '#FFFFFF';
				}
			},
			// 导航背景色渐变角度
			bgColorAngle: {
				type: [String, Number],
				default: function() {
					return 45;
				}
			},
			//导航字体颜色，字体颜色为白色的时候会把手机状态栏设置为白色，否则为黑色
			fontColor: {
				type: String,
				default: function() {
					return '#000000';
				}
			},
			//标题是否居中
			titleCenter: {
				type: Boolean,
				default: function() {
					return true;
				}
			},
			//标题
			title: {
				type: String,
				default: function() {
					return '';
				}
			},
			//类型 fixed为固定 默认
			// ordinary 普通的 不固定
			// transparent 透明不固定的
			//transparentFixed  透明固定的
			type: {
				type: String,
				default: function() {
					return 'fixed';
				}
			},
			//透明固定的时候字体颜色
			transparentFixedFontColor: {
				type: String,
				default: function() {
					return '#000000';
				}
			},
			// 屏幕滑动距离顶部距离(透明固定导航比传)
			scrollTop: {
				type: Number,
				default: function() {
					return 0;
				}
			},
			// 是否显示阴影
			shadow: {
				type: Boolean,
				default: function() {
					return true;
				}
			},
		},
		data() {
			return {
				//当前页面是否是第一个页面
				firstPage: false,
				//透明度值
				transparentValue: 1,
				//标题
				navTitle: '',
				//字体色
				navFontColor: '#000000',
				//背景色
				navBgColor: 'none',
				//透明底字体色
				navTransparentFixedFontColor: '#000000',
				// 是否使用
				themeBgColor: false,
				// 导航栏高度
				statusBarHeight: 0,
				// 上次显示的导航栏颜色
				lastFrontColor:"",
			};
		},
		computed: {
			back() {
				return this.backState == 1000 || this.backState == 3000;
			},
			//导航固定
			navFixed() {
				if (this.type == 'transparentFixed' || this.type == 'fixed') {
					return true;
				} else {
					return false;
				}
			},
			//导航底部线是否显示
			navShadow() {
				if(this.bgColor && typeof(this.bgColor) == "string"){
					return this.shadow && this.type !== 'transparent' && whiteList.includes(this.bgColor);
				}else{
					return false;
				}
			},
			//导航字体是否是白色颜色
			isWhite() {
				return whiteList.includes(this.navFontColor);
			},
			//右上角是否有两个按钮
			isTwoBtn() {
				return (this.backState == 1000 || this.backState == 3000) && this.home && !this.firstPage;
			}
		},
		watch: {
			title(val) {
				this.navTitle = val;
			},
			fontColor(val) {
				this.navFontColor = val;
				this.settingColor();
			},
			bgColor(val) {
				this.getNavBgColor(val);
			},
			transparentFixedFontColor(val) {
				this.navTransparentFixedFontColor = val;
			},
			scrollTop(val) {
				this.pageScroll({
					scrollTop: val
				}); 
			}
		},
		//第一次加载
		created() {
			this.navTitle = this.title;
			this.navFontColor = this.fontColor;
			this.getNavBgColor(this.bgColor);
			this.navTransparentFixedFontColor = this.transparentFixedFontColor;
			//获取手机状态栏高度
			this.statusBarHeight = uni.getSystemInfoSync()['statusBarHeight'];
			const _this = this;
			this.pageScroll({
				scrollTop: this.scrollTop
			});
			//获取所有页面
			let currentPages = getCurrentPages();
			let pageLen = currentPages.length;
			//判断是否是第一个页面，如果是有设置back为true的页面，将不显示返回箭头，而显示返回首页按钮
			if (pageLen == 1 && !mainPagePath.includes(currentPages[0].route)) {
				this.firstPage = true;
			}
			console.log(this.isblack)
		},
		//方法
		methods: {
			nato(url){
				uni.navigateTo({
					url:url
				})
			},
			gettqImg(code) {
				return 'https://cs.tour-ma.com/r/cms/www/m/tianqi/' + code + '.png';
			},
			getimg2(url){
				return 'https://cs.tour-ma.com/r/cms/www/m/yushan/' + url;
			},
			toindex(){
				console.log(11111)
				uni.reLaunch({
					url:'../../pages/index/index'
				})
			},
			toback(){
				console.log(2222)
				uni.navigateBack();
			},
			//返回上一页面
			onBackPage() {
				if (this.backState == 3000) {
					this.$emit('backClick');
				} else {
					uni.navigateBack();
				}
			},
			//返回首页
			onBackHome() {
				uni.switchTab({
					url: homePath
				});
			},
			pageScroll(e) {
				if (this.type == 'transparentFixed') {
					if (e.scrollTop && e.scrollTop > 0) {
						if (e.scrollTop > 180) {
							this.transparentValue = 1;
						} else {
							this.transparentValue = e.scrollTop / 180;
						}
					} else {
						this.transparentValue = 0;
					}
					this.settingColor();
				}
			},
			// 获取导航背景颜色
			getNavBgColor(val) {
				if (val == 'themeBgColor') {
					this.themeBgColor = true;
					this.navBgColor = 'none';
				} else if (this.type == 'transparent') {
					this.themeBgColor = false;
					this.navBgColor = 'none';
				} else {
					if (typeof val == 'string') {
						this.navBgColor = 'linear-gradient(90deg,' + val + ',' + val + ')';
					} else if (Array.isArray(val) && val.length >= 2) {
						let navBgColor = 'linear-gradient(' + this.bgColorAngle + 'deg';
						val.forEach((item,ind) => {
							if (typeof item == 'string') {
								if(ind==1){
									navBgColor += ' 0%,' + item;
								}else{
									navBgColor += ',' + item;
								}
							} else if (typeof item == 'object') {
								navBgColor += ',' + item.color + ' ' + item.scale;
							}
						});
						console.log(navBgColor)
						navBgColor += ' 88%)';
						this.navBgColor = navBgColor;
					}
				}
			},
			//设置手机状态栏颜色
			settingColor() {
				let navColor = this.navFontColor;
				if (this.type == 'transparentFixed' && this.transparentValue <= 0.5) {
					navColor = this.navTransparentFixedFontColor;
				}
				let frontColor = "#000000";
				if (whiteList.includes(navColor)) {
					frontColor = '#ffffff';
				}
				if (this.lastFrontColor == frontColor) {
					return;
				}
				setTimeout(() => {
					this.lastFrontColor = frontColor;
					// 改变手机状态栏颜色
					uni.setNavigationBarColor({
						frontColor: frontColor,
						backgroundColor: "#FFFFFF"
					});
				}, 150);
			}
		}
	};
</script>
<style lang="scss">
	
	/* #ifdef APP-PLUS-NVUE */
	@function unit($num) {
		@return $num + 0rpx;
	}
	/* #endif */
	/* #ifndef APP-PLUS-NVUE */
	@function unit($num) {
		@return $num + 0upx;
	}
	/* #endif */
	.header_content {
		/* #ifndef APP-NVUE */
		display: flex;
		/* #endif */
		/* #ifdef MP */
		padding-right: unit(190);
		box-sizing: border-box;
		/* #endif */
		width: unit(750);
		align-items: flex-end;
		justify-content: space-between;
		flex-direction: row;
		height: unit(88);
		position: relative;
	}

	.header_station {
		height: unit(88);
	}

	.header_shadow {
		// border-style: solid;
		// border-width: unit(2);
		// border-color: #f5f5f5;
		box-shadow: 0 0 unit(6) 0 #ddd;
	}

	.header_fixed {
		position: fixed;
		top: 0;
		left: 0;
		width: unit(750);
		z-index: 99;
	}

	.header_absolute {
		position: absolute;
		top: 0;
		left: 0;
		z-index: 99;
		width: unit(750);
		background: transparent!important;
		// background-image: url(../../static/banner.png) !important;
	}

	.header_left_box {
		/* #ifndef APP-PLUS-NVUE */
		display: flex;
		/* #endif */
		flex-direction: row;
		align-items: center;
		height: unit(88);
		flex: 1;
	}

	.header_left_line {
		height: unit(30);
		width: unit(2);
		background-color: rgba(255, 255, 255, 0.4);
	}

	.header_left_back {
		width: unit(120);
		border-radius: unit(33);
		border-style: solid;
		border-width: unit(1);
		border-color: #EBEBEB;
		height: 100%;
		/* #ifndef APP-PLUS-NVUE */
		display: flex;
		/* #endif */
		align-items: center;
		justify-content: space-between;
		padding: 0 25upx;
		.zjx{
			width: unit(2);
			height: 60%;
			position: absolute;
			top: 20%;
			left: 50%;
			background: #CCCCCC;
		}
	}

	.header_icon {
		width: unit(34);
		height: unit(34);
	}

	.header_left_home {
		width: unit(56);
		height: 100%;
		/* #ifndef APP-PLUS-NVUE */
		display: flex;
		/* #endif */
		align-items: center;
		justify-content: center;
	}

	.header_left_info {
		/* #ifndef APP-PLUS-NVUE */
		display: flex;
		/* #endif */
		flex-direction: row;
		align-items: center;
		height: unit(65);
		margin-left: unit(16);
		position: fixed;
	}

	.header_title {
		height: unit(88);
		font-size: unit(32);
		padding-left: unit(30);
		padding-right: unit(30);
		font-weight: 700;
		text-overflow: ellipsis;
		/* #ifndef APP-PLUS-NVUE */
		white-space: nowrap;
		display: flex;
		overflow: hidden;
		/* #endif */
		/* #ifdef APP-PLUS-NVUE */
		lines: 1;
		/* #endif */
		flex-direction: row;
		align-items: center;
		justify-content: center;
		/* #ifdef MP */
		max-width: calc(100vw - 160upx);
		/* #endif */
	}

	.header_title_center {
		position: absolute;
		bottom: unit(0);
		left: unit(375);
		transform: translateX(-50%);
	}

	.header_right_info {
		height: unit(88);
		/* #ifndef APP-PLUS-NVUE */
		display: flex;
		flex-shrink: 0;
		/* #endif */
		flex-direction: row;
		align-items: center;
	}

	.header_btnMongol {
		border-radius: unit(33);
		border-style: solid;
		border-width: unit(2);
		border-color: rgba(0, 0, 0, 0.1);
		background-color: rgba(255, 255, 255, 0.7);
		/* #ifndef APP-PLUS-NVUE */
		box-sizing: border-box;
		/* #endif */
	}

	.header_btnMongol_left_back,
	.header_btnMongol_left_home {
		width: unit(70);
	}

	.header_transparentFixed {
		border-bottom-width: 0;
		background-color: transparent;
		background-image: transparent;
	}

	.header_transparentFixed_left_info {
		border-style: solid;
		border-width: unit(2);
		border-color: rgba(0, 0, 0, 0.1);
		background-color: rgba(255, 255, 255, 0.7);
		border-radius: unit(33);
		/* #ifndef APP-PLUS-NVUE */
		box-sizing: border-box;
		/* #endif */
	}

	.header_transparentFixed_colorWhite_left_info {
		border-style: solid;
		border-width: unit(2);
		border-color: rgba(255, 255, 255, 0.3);
		background-color: rgba(0, 0, 0, 0.2);
	}

	//颜色白色
	.header_colorWhite_btnMongol {
		border-style: solid;
		border-width: unit(2);
		border-color: rgba(255, 255, 255, 0.3);
		background-color: rgba(0, 0, 0, 0.2);
	}

	.header_colorWhite_left_line {
		background-color: rgba(255, 255, 255, 0.3);
	}
	.sy-tq{
		position: absolute;
		top:0%;
		left: unit(30);
		z-index: 999;
		display: flex;
		height: unit(88);
		line-height: unit(88);
	}
	.tb{
		display: flex;
		align-items: center;
		justify-content: center;
		margin: unit(0) unit(10) unit(0)  unit(0);
	}
	.tb .img{
		width: unit(50);
		height: unit(50);
		margin-top: unit(-5);
	}
	.wz{
		color: #fff;
	}
	.klinfo{
		position: absolute;
		top: 80%;
		left: 5%;
		width: 65%;
		height: 85upx;
		font-size: 26upx;
		color: #fff;
		swiper{
			width: 100%;
			height: 100%;
			swiper-item{
				.swiper-item{
					width: 100%;
					height: 100%;
					display: flex;
					flex-direction: column;
					justify-content: start;
					.kltit{
						display: flex;
						justify-content: start;
					}
					.kltitle{
						margin-right: 30upx;
					}
				}
			}
		}
	}
</style>
