cashier_app/components/JeepayCustomNavbar/JeepayCustomNavbar.vue

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Vue
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<!--
组件功能 自定义导航栏包裹 , 基于 uni-nav-bar 的封装
1. pages.json : "navigationStyle": "custom"
2. 页面引入该组件
3. 如果背景透明并且需要下滑变默认背景色 需要在页面实现 onPageScroll函数可以空函数 否则该组件无法正常监听
示例
背景通铺效果
<JeepayCustomNavbar :transparent="true" bgDefaultColor='#b6a3a3' title="背景通铺效果" backCtrl="back" ></JeepayCustomNavbar>
import { onPageScroll } from '@dcloudio/uni-app'
onPageScroll(() => {})
纯色导航条
<JeepayCustomNavbar :transparent="false" bgDefaultColor='#ffaa7f' title="纯色导航条" backCtrl="back"></JeepayCustomNavbar>
自定义左上角 效果
<JeepayCustomNavbar :transparent="true" bgDefaultColor='#ff557f' title="自定义左上角" backCtrl="back">
<view> 选择门店自定义导航条内容 </view>
</JeepayCustomNavbar>
@author terrfly
@site https://www.jeequan.com
@date 2022/11/18 14:32
-->
<template>
<view>
<uni-nav-bar
fixed
:statusBar="true"
:border="false"
:height="props.height"
:backgroundColor="vdata.backgroundColor"
leftWidth="100%"
>
<!-- 使用左侧插槽 100%宽度 -->
<template #left>
<view class="left-slot-view">
<slot>
<view class="nav-bar-box">
<view>
<!-- 左侧按钮 -->
<uni-icons v-if="props.backCtrl" class="left-back" @click="backFunc" :type="props.backIcon" size="20" :color="props.textColor"></uni-icons>
</view>
<!-- 标题 -->
<view class="text" :style="{ color: props.textColor }"> {{props.title}} </view>
</view>
</slot>
</view>
</template>
</uni-nav-bar>
</view>
</template>
<script setup>
import { onPageScroll } from '@dcloudio/uni-app'
import { reactive, ref, onMounted } from 'vue'
import ak from '@/commons/utils/ak.js'
// 定义组件参数
const props = defineProps({
// 标题
title: { type: String, default: '' },
// 文字颜色
textColor: { type: String, default: 'black' },
// 返回按钮类型
backIcon: { type: String, default: 'back' },
// 高度: 默认与uni-nav-bar 保持一致。
height: { type: Number, default: 44 },
// 默认背景色:
bgDefaultColor: { type: String, default: 'white' },
// 是否默认透明(此时可自定义背景), 当滑动时将切换为默认背景色。
transparent: { type: Boolean, default: false },
// 返回按钮的操作项: null-无返回按钮, back 返回上一页, pageUrl: '', 也可以是回调函数。
backCtrl: [ String, Function ],
})
// 只有透明色时 才需要监听
if(props.transparent){
onPageScroll((e) => { // 切换背景颜色 透明 or 主题色。
if(e.scrollTop > (props.height / 2.5) ){
vdata.backgroundColor = props.bgDefaultColor
}else{
vdata.backgroundColor = 'transparent'
}
})
}
// 颜色
const vdata = reactive({
backgroundColor: 'transparent' // 默认透明色
})
onMounted(() => {
// 当非透明色, 需要改为默认颜色
if(!props.transparent){
vdata.backgroundColor = props.bgDefaultColor + '';
}
})
// 点击返回按钮,
function backFunc(){
if(!props.backCtrl){
return false;
}
if(typeof props.backCtrl == 'function'){
return props.backCtrl()
}
if(props.backCtrl === 'back'){
return ak.go.back()
}
}
</script>
<style scoped lang="scss">
.left-slot-view {
display: flex;
align-items: center;
width: 100%;
height: 100%;
line-height: 100%;
font-size: 33rpx;
font-weight: 500;
.nav-bar-box {
display: flex;
flex-grow: 1;
justify-content: space-between;
.left-back {
position: absolute;
}
&::after {
content: "";
}
}
}
::v-deep.uni-navbar__header {
.uni-navbar__header-container,
.uni-navbar__header-btns-right {
display: none !important;
}
}
</style>