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430 lines
11 KiB
430 lines
11 KiB
<template>
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<view>
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<view
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class="header"
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:class="{ fixed: navFixed, absolute: type == 'transparent', line: navLine, colorWhite: isWhite, themeBgColor: themeBgColor }"
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:style="{ paddingTop: statusBarHeight + 'px', backgroundImage: navBgColor, color: navFontColor, opacity: transparentValue }"
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>
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<view class="left_box">
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<slot name="left">
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<view class="left_info" :class="{ btnMongol: isTwoBtn }" v-if="back || $slots.left || home">
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<view class="back" v-if="back && !firstPage" @click="onBackPage"></view>
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<text v-if="isTwoBtn"></text>
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<view class="home" v-if="(firstPage && back) || home" @click="onBackHome"></view>
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</view>
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</slot>
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<view class="title" :class="{ center: titleCenter, color: navFontColor }" v-if="$slots.default || navTitle">
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<slot>{{ navTitle }}</slot>
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</view>
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</view>
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<view class="right_info"><slot name="right"></slot></view>
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</view>
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<view
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class="header transparentFixed fixed"
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:class="{ colorWhite: isWhite }"
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v-if="type == 'transparentFixed'"
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:style="{ paddingTop: statusBarHeight + 'px', color: navTransparentFixedFontColor, opacity: 1 - transparentValue, zIndex: transparentValue < 0.3 ? 100 : 90 }"
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>
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<view class="left_box">
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<slot name="transparentFixedLeft">
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<view class="left_info" v-if="back || $slots.left || home">
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<view class="back" v-if="back && !firstPage" @click="onBackPage"></view>
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<text v-if="isTwoBtn"></text>
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<view class="home" v-if="(firstPage && back) || home" @click="onBackHome"></view>
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</view>
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</slot>
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<view class="title" :class="{ center: titleCenter }" v-if="$slots.default || navTitle">
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<slot name="transparentFixed">{{ navTitle }}</slot>
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</view>
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</view>
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<view class="right_info"><slot name="transparentFixedRight"></slot></view>
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</view>
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<view v-if="type == 'fixed'" class="station" :style="{ paddingTop: statusBarHeight + 'px' }"></view>
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</view>
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</template>
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<script>
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// 主页页面的页面路径
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// 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。
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// 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
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const mainPagePath = ['pages/navList'];
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//返回首页的地址
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const homePath = '/pages/navList';
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//白色表达值
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const whiteList = ['#FFF', '#FFFFFF', 'white', 'rgb(255,255,255)', 'rgba(255,255,255,1)'];
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export default {
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props: {
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//是否显示返回按钮
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// 1000 显示返回按钮
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// 2000 不显示返回按钮
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// 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
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// 默认不显示返回按钮
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backState: {
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default: function() {
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return 2000;
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}
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},
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//是否显示返回首页按钮
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home: {
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type: Boolean,
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default: function() {
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return false;
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}
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},
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//导航背景色，支持渐变
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bgColor: {
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type: [String, Array],
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default: function() {
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return '#FFF';
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}
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},
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// 导航背景色渐变角度
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bgColorAngle: {
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type: [String, Number],
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default: function() {
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return 90;
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}
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},
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//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
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fontColor: {
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type: String,
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default: function() {
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return '#000';
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}
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},
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//标题是否居中
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titleCenter: {
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type: Boolean,
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default: function() {
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return true;
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}
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},
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//标题
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title: {
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type: String,
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default: function() {
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return '';
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}
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},
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//类型 fixed为固定 默认
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// ordinary 普通的 不固定
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// transparent 透明不固定的
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//transparentFixed 透明固定的
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type: {
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type: String,
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default: function() {
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return 'fixed';
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}
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},
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//透明固定的时候字体颜色
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transparentFixedFontColor: {
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type: String,
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default: function() {
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return '#000';
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}
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}
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},
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data() {
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return {
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//当前页面是否是第一个页面
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firstPage: false,
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//透明度值
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transparentValue: 1,
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//标题
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navTitle: '',
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//字体色
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navFontColor: '#000',
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//背景色
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navBgColor: 'linear-gradient(90deg, #FFF 0%, #FFF 100%)',
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//透明底字体色
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navTransparentFixedFontColor: '#000',
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// 是否使用
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themeBgColor: false,
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// 导航栏高度
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statusBarHeight: 0
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};
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},
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computed: {
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back() {
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return this.backState == 1000 || this.backState == 3000;
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},
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//导航固定
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navFixed() {
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if (this.type == 'transparentFixed' || this.type == 'fixed') {
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return true;
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} else {
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return false;
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}
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},
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//导航底部线是否显示
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navLine() {
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return this.type !== 'transparent' && whiteList.includes(this.navBgColor);
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},
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//导航字体是否是白色颜色
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isWhite() {
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return whiteList.includes(this.navFontColor);
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},
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//右上角是否有两个按钮
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isTwoBtn() {
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return (this.backState == 1000 || this.backState == 3000) && this.home && !this.firstPage;
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}
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},
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watch: {
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title(val) {
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this.navTitle = val;
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},
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fontColor(val) {
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this.navFontColor = val;
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this.settingColor();
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},
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bgColor(val) {
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this.getNavBgColor(val);
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},
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transparentFixedFontColor(val) {
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this.navTransparentFixedFontColor = val;
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}
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},
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//第一次加载
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created() {
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this.navTitle = this.title;
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this.navFontColor = this.fontColor;
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this.getNavBgColor(this.bgColor);
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this.navTransparentFixedFontColor = this.transparentFixedFontColor;
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//获取手机状态栏高度
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this.statusBarHeight = uni.getSystemInfoSync()['statusBarHeight'];
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const _this = this;
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if (this.type == 'transparentFixed') {
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this.transparentValue = 0;
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}
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this.settingColor();
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//获取所有页面
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let currentPages = getCurrentPages();
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let pageLen = currentPages.length;
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//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，而现实返回首页按钮
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if (pageLen == 1 && !mainPagePath.includes(currentPages[0].route)) {
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this.firstPage = true;
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}
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//监听页面滚动，type为transparentFixed的时候页面向下滚动的时候导航逐渐变白
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if (this.type == 'transparentFixed') {
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// #ifndef H5
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currentPages[pageLen - 1].onPageScroll = function(e) {
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_this.$emit('scroll', e);
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if (e.scrollTop > 180) {
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_this.transparentValue = 1;
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} else {
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_this.transparentValue = e.scrollTop / 180;
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}
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};
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// #endif
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// #ifdef H5
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window.onscroll = function(e) {
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let scrollTop = document.documentElement.scrollTop || document.body.scrollTop;
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_this.$emit('scroll', { scrollTop: scrollTop });
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if (scrollTop > 180) {
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_this.transparentValue = 1;
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} else {
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_this.transparentValue = scrollTop / 180;
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}
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};
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// #endif
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}
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},
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//方法
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methods: {
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//返回上一页面
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onBackPage() {
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if (this.backState == 3000) {
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this.$emit('backClick');
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} else {
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uni.navigateBack();
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}
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},
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//返回首页
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onBackHome() {
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uni.switchTab({
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url: homePath
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});
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},
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// 获取导航背景颜色
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getNavBgColor(val) {
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if (val == 'themeBgColor') {
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this.themeBgColor = true;
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this.navBgColor = '';
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} else {
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if (typeof val == 'string') {
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this.navBgColor = 'linear-gradient(90deg, ' + val + ' 0%, ' + val + ' 100%)';
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} else if (val instanceof Array && val.length >= 2) {
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let navBgColor = 'linear-gradient(' + this.bgColorAngle + 'deg';
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val.forEach(item => {
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if (typeof item == 'string') {
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navBgColor += ',' + item;
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} else if (typeof item == 'object') {
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navBgColor += ',' + item.color + ' ' + item.scale;
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}
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});
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navBgColor += ')';
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this.navBgColor = navBgColor;
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}
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}
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},
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//设置手机状态栏颜色
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settingColor() {
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//判断导航栏颜色
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if (whiteList.includes(this.navFontColor)) {
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// 改变手机状态栏颜色
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uni.setNavigationBarColor({
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frontColor: '#ffffff',
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backgroundColor: this.navBgColor
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});
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} else {
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// 改变手机状态栏颜色
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uni.setNavigationBarColor({
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frontColor: '#000000',
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backgroundColor: this.navBgColor
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});
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}
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}
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}
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};
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</script>
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<style lang="scss" scoped>
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.station {
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box-sizing: content-box;
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height: 88upx;
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}
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.header {
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display: flex;
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align-items: flex-end;
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position: relative;
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justify-content: space-between;
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box-sizing: content-box;
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height: 88upx;
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/* #ifdef MP */
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padding-right: 190upx;
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/* #endif */
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&.fixed {
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position: fixed;
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top: 0;
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left: 0;
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right: 0;
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z-index: 99;
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}
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&.absolute {
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position: absolute;
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top: 0;
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left: 0;
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right: 0;
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z-index: 99;
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background-color: transparent !important;
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}
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&.line {
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//需要显示线条的在这打开
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// border-bottom: 2upx solid #f5f5f5;
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box-shadow: 0 0 6upx 0 #ddd;
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}
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&.transparentFixed {
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border-bottom: 0;
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background-color: initial;
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background-image: initial;
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.left_info {
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border: 2upx solid rgba(0, 0, 0, 0.1);
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background-color: rgba(255, 255, 255, 0.7);
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border-radius: 33upx;
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box-sizing: border-box;
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}
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&.colorWhite .left_info {
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border: 2upx solid rgba(255, 255, 255, 0.3);
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background-color: rgba(0, 0, 0, 0.2);
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}
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}
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//颜色白色
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&.colorWhite {
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.left_info {
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&.btnMongol {
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border: 2upx solid rgba(255, 255, 255, 0.3);
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background-color: rgba(0, 0, 0, 0.2);
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}
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.back {
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background-image: url('../../static/zhouWei-navBar/icon_back_white.png');
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}
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text {
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background-color: rgba(255, 255, 255, 0.3);
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}
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.home {
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background-image: url('../../static/zhouWei-navBar/icon_home_white.png');
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}
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}
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}
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.left_box {
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display: flex;
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align-items: center;
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height: 100%;
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}
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$height: 56upx;
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.left_info {
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margin-right: 30upx;
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display: flex;
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align-items: center;
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height: $height;
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transition: all 0.6s;
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margin-left: 16upx;
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&.btnMongol {
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border-radius: 33upx;
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border: 2upx solid rgba(0, 0, 0, 0.1);
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background-color: rgba(255, 255, 255, 0.7);
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box-sizing: border-box;
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.back,
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.home {
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width: 70upx;
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}
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}
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.back {
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background-image: url('../../static/zhouWei-navBar/icon_back_black.png');
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background-position: center center;
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background-repeat: no-repeat;
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background-size: auto 55%;
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width: $height;
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height: 100%;
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}
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text {
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height: 30upx;
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width: 2upx;
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background-color: rgba(255, 255, 255, 0.4);
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}
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.home {
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background-image: url('../../static/zhouWei-navBar/icon_home_black.png');
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background-position: center center;
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background-repeat: no-repeat;
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background-size: auto 55%;
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width: $height;
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height: 100%;
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}
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}
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.title {
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height: 88upx;
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font-size: 32upx;
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padding-left: 30upx;
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padding-right: 30upx;
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font-weight: 700;
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overflow: hidden;
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text-overflow: ellipsis;
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white-space: nowrap;
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display: flex;
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align-items: center;
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/* #ifndef APP-PLUS||H5 */
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max-width: 60vw;
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/* #endif */
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&.center {
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position: absolute;
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bottom: 0;
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left: 50%;
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transform: translateX(-50%);
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}
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}
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.right_info {
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height: 100%;
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display: flex;
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align-items: center;
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}
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}
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</style>
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