JCSS / yl_miniapp

<template>
	<view class="tui-tabbar"
		:class="{ 'tui-tabbar-fixed': isFixed, 'tui-unlined': unlined, 'tui-backdrop__filter': backdropFilter }"
		:style="{ background: backgroundColor, zIndex: isFixed ? zIndex : 'auto' }">
		<block v-for="(item, index) in tabBar" :key="index">
			<view class="tui-tabbar-item" :class="{ 'tui-item-hump': item.hump }"
				:style="{ backgroundColor: item.hump && !backdropFilter ? backgroundColor : 'none' }"
				@tap="tabbarSwitch(index, item.hump, item.pagePath, item.verify)">
				<view class="tui-icon-box" :class="{ 'tui-tabbar-hump': item.hump }">
					<image :src="current == index ? item.selectedIconPath : item.iconPath"
						:class="[item.hump ? '' : 'tui-tabbar-icon']" v-if="!item.name"></image>
					<tui-icon :name="current===index?item.activeName:item.name" :customPrefix="item.customPrefix || ''"
						:size="item.iconSize || iconSize" unit="rpx" :color="current == index?getActiveColor:color"
						v-else></tui-icon>
					<view :class="[item.isDot ? 'tui-badge-dot' : 'tui-badge']"
						:style="{ color: badgeColor, backgroundColor: getBadgeBgColor }" v-if="item.num">
						{{ item.isDot ? '' : item.num }}
					</view>
				</view>
				<view class="tui-text-scale" :class="{ 'tui-text-hump': item.hump }"
					:style="{ color: current == index ? getActiveColor : color }">{{ item.text }}</view>
			</view>
		</block>
		<view :style="{ background: backgroundColor }" :class="{ 'tui-hump-box': hump }"
			v-if="hump && !unlined && !backdropFilter"></view>
	</view>
</template>

<script>
	// import tuiIcon from '@/components/thorui/tui-icon/tui-icon.vue'
	export default {
		name: 'tuiTabbar',
		emits: ['click'],
		// components:{
		// 	tuiIcon
		// },
		props: {
			//当前索引
			current: {
				type: Number,
				default: 0
			},
			//字体颜色
			color: {
				type: String,
				default: '#666'
			},
			//字体选中颜色
			selectedColor: {
				type: String,
				default: ''
			},
			//背景颜色
			backgroundColor: {
				type: String,
				default: '#FFFFFF'
			},
			//是否需要中间凸起按钮
			hump: {
				type: Boolean,
				default: false
			},
			iconSize: {
				type: [Number, String],
				default: 52
			},
			//固定在底部
			isFixed: {
				type: Boolean,
				default: true
			},
			tabBar: {
				type: Array,
				default () {
					return [];
				}
			},
			//角标字体颜色
			badgeColor: {
				type: String,
				default: '#fff'
			},
			//角标背景颜色
			badgeBgColor: {
				type: String,
				default: ''
			},
			unlined: {
				type: Boolean,
				default: false
			},
			//是否开启高斯模糊效果[仅在支持的浏览器有效果]
			backdropFilter: {
				type: Boolean,
				default: false
			},
			//z-index
			zIndex: {
				type: [Number, String],
				default: 9999
			}
		},
		data() {
			return {};
		},
		computed:{
			getActiveColor(){
				return this.selectedColor || (uni && uni.$tui && uni.$tui.color.primary) || '#5677fc';
			},
			getBadgeBgColor(){
				return this.badgeBgColor || (uni && uni.$tui && uni.$tui.color.pink) || '#f74d54';
			}
		},
		methods: {
			tabbarSwitch(index, hump, pagePath, verify) {
				this.$emit('click', {
					index: index,
					hump: hump,
					pagePath: pagePath,
					verify: verify
				});
			}
		}
	};
</script>

<style scoped>
	.tui-tabbar {
		width: 100%;
		height: 100rpx;
		display: flex;
		align-items: center;
		justify-content: space-between;
		position: relative;
	}

	.tui-backdrop__filter {
		/* Safari for macOS & iOS */
		-webkit-backdrop-filter: blur(15px);
		/* Google Chrome */
		backdrop-filter: blur(15px);
	}

	.tui-tabbar-fixed {
		position: fixed;
		left: 0;
		bottom: 0;
		padding-bottom: constant(safe-area-inset-bottom);
		padding-bottom: env(safe-area-inset-bottom);
		box-sizing: content-box !important;
	}

	.tui-tabbar::before {
		content: ' ';
		width: 100%;
		border-top: 1px solid #b2b2b2;
		position: absolute;
		top: -1rpx;
		left: 0;
		transform: scaleY(0.5) translateZ(0);
		transform-origin: 0 0;
		display: block;
		z-index: 3;
	}

	.tui-tabbar-item {
		height: 100%;
		flex: 1;
		display: flex;
		text-align: center;
		align-items: center;
		flex-direction: column;
		justify-content: space-between;
		position: relative;
		padding: 10rpx 0;
		box-sizing: border-box;
		z-index: 5;
	}

	.tui-icon-box {
		position: relative;
	}

	.tui-item-hump {
		height: 98rpx;
	}

	.tui-tabbar-icon {
		width: 52rpx;
		height: 52rpx;
		display: block;
	}

	.tui-hump-box {
		width: 120rpx;
		height: 120rpx;
		position: absolute;
		left: 50%;
		transform: translateX(-50%);
		top: -50rpx;
		border-radius: 50%;
		z-index: 4;
	}

	.tui-hump-box::after {
		content: ' ';
		height: 200%;
		width: 200%;
		border: 1px solid #b2b2b2;
		position: absolute;
		top: 0;
		left: 0;
		transform: scale(0.5) translateZ(0);
		transform-origin: 0 0;
		border-radius: 120rpx;
		box-sizing: border-box;
		display: block;
	}

	.tui-unlined::after {
		height: 0 !important;
	}

	.tui-tabbar-hump {
		width: 100rpx;
		height: 100rpx;
		position: absolute;
		left: 50%;
		-webkit-transform: translateX(-50%) rotate(0deg);
		transform: translateX(-50%) rotate(0deg);
		top: -40rpx;
		-webkit-transition: all 0.2s linear;
		transition: all 0.2s linear;
		border-radius: 50%;
		z-index: 5;
	}

	.tui-tabbar-hump image {
		width: 100rpx;
		height: 100rpx;
		display: block;
	}

	.tui-hump-active {
		-webkit-transform: translateX(-50%) rotate(135deg);
		transform: translateX(-50%) rotate(135deg);
	}

	.tui-text-scale {
		font-weight: bold;
		transform: scale(0.8);
		font-size: 25rpx;
		line-height: 28rpx;
		transform-origin: center 100%;
	}

	.tui-text-hump {
		position: absolute;
		left: 50%;
		bottom: 10rpx;
		transform: scale(0.8) translateX(-50%);
		transform-origin: 0 100%;
	}

	.tui-badge {
		position: absolute;
		font-size: 24rpx;
		height: 32rpx;
		min-width: 20rpx;
		padding: 0 6rpx;
		border-radius: 40rpx;
		right: 0;
		top: -5rpx;
		transform: translateX(70%);
		display: flex;
		align-items: center;
		justify-content: center;
	}

	.tui-badge-dot {
		position: absolute;
		height: 16rpx;
		width: 16rpx;
		border-radius: 50%;
		right: -4rpx;
		top: -4rpx;
	}
</style>