<template>
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<view
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class="tn-subsection-class tn-subsection"
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:class="[subsectionBackgroundColorClass]"
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:style="[subsectionStyle]"
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>
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<!-- 滑块 -->
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<block v-for="(item, index) in listInfo" :key="index">
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<view
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class="tn-subsection__item tn-text-ellipsis"
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:class="[
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'section-item-' + index,
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noBorderRight(index)
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]"
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:style="[itemStyle(index)]"
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@tap="click(index)"
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>
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<view class="tn-subsection__item--text tn-text-ellipsis" :style="[textStyle(index)]">
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{{ item.name }}
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</view>
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</view>
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</block>
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<!-- 背景 -->
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<view
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class="tn-subsection__bg"
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:class="[itemBarClass]"
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:style="[itemBarStyle]"
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></view>
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</view>
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</template>
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<script>
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import componentsColorMixin from '../../libs/mixin/components_color.js'
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export default {
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mixins: [componentsColorMixin],
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name: 'tn-subsection',
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props: {
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// 模式选择
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// button 按钮模式 subsection 分段模式
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mode: {
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type: String,
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default: 'subsection'
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},
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// 组件高度
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height: {
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type: Number,
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default: 60
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},
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// tab的数据
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list: {
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type: Array,
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default() {
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return []
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}
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},
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// 当前活动tab的index
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current: {
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type: [Number, String],
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default: 0
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},
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// 激活时的字体颜色
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activeColor: {
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type: String,
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default: '#FFFFFF'
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},
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// 未激活时的字体颜色
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inactiveColor: {
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type: String,
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default: '#AAAAAA'
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},
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// 激活tab的字体是否加粗
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bold: {
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type: Boolean,
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default: false
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},
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backgroundColor: {
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type: String,
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default: '#F4F4F4'
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},
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// 滑块的颜色
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buttonColor: {
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type: String,
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default: '#01BEFF'
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},
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// 当mode为button时生效，圆角的值，单位rpx
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borderRadius: {
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type: Number,
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default: 10
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},
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// 是否开启动画
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animation: {
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type: Boolean,
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default: true
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},
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// 动画类型
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// cubic-bezier -> 贝塞尔曲线
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animationType: {
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type: String,
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default: ''
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},
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// 滑动滑块的是否，是否触发震动
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vibrateShort: {
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type: Boolean,
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default: false
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}
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},
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data() {
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return {
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// 列表数据
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listInfo: [],
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// 子元素的背景样式
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itemBgStyle: {
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width: 0,
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left: 0,
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backgroundColor: '#ffffff',
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height: '100%'
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},
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// 当前选中的滑块
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currentIndex: this.current,
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buttonPadding: 3,
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// 组件初始化的是否current变换不应该震动
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firstVibrateShort: true
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}
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},
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watch: {
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current: {
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handler(val) {
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this.currentIndex = val
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this.changeSectionStatus(val)
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},
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immediate: true
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}
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},
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created() {
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// 将list的数据，传入listInfo数组
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// 接受直接数组形式，或者数组元素为对象的形式，如：['开启', '关闭'],或者[{name: '开启'}, {name: '关闭'}]
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this.listInfo = this.list.map((item, index) => {
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if (typeof item !== 'object') {
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let obj = {
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width: 0,
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name: item
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}
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return obj
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} else {
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item.width = 0
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return obj
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}
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})
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},
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computed: {
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// 设置mode=subsection时，滑块没有样式
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noBorderRight() {
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return index => {
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if (this.mode !== 'subsection') return
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let clazz = ''
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// 不显示右边的边距
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if (index < this.list.length - 1) clazz += ' tn-subsection__item--none-border-right'
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// 显示整个组件的左右边圆角
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if (index === 0) clazz += ' tn-subsection__item--first'
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if (index === this.list.length - 1) clazz += ' tn-subsection__item--last'
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return clazz
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}
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},
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// 文字的样式
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textStyle() {
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return index => {
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let style = {}
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// 设置字体颜色
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if (index === this.currentIndex) {
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style.color = this.activeColor
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} else {
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style.color = this.inactiveColor
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}
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// 字体加粗
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if (index === this.currentIndex && this.bold) style.fontWeight = 'bold'
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// 文字大小
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style.fontSize = (this.fontSize || 26) + this.fontUnit
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return style
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}
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},
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// 每个分段器item的样式
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itemStyle() {
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return index => {
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let style = {}
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if (this.fontSizeStyle) {
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style.fontSize = this.fontSizeStyle
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}
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if (this.mode === 'subsection') {
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// 设置border的样式
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style.borderColor = this.buttonColor
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style.borderWidth = '1rpx'
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style.borderStyle = 'solid'
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}
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return style
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}
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},
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// mode = button时，设置外层view的样式
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subsectionStyle() {
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let style = {}
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style.height = this.height + 'rpx'
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if (this.mode === 'button') {
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style.backgroundColor = this.backgroundColorStyle
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style.padding = `${this.buttonPadding}px`
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style.borderRadius = `${this.borderRadius}rpx`
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}
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return style
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},
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// mode = button时，设置外层view的背景class
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subsectionBackgroundColorClass() {
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let clazz = ''
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if (this.mode === 'button' && this.backgroundColorClass) {
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clazz = this.backgroundColorClass
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}
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return clazz
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},
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itemBarClass() {
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let clazz = ''
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const buttonBgClass = this.$t.color.getBackgroundColorInternalClass(this.buttonColor)
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if (this.animation) {
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clazz += ' tn-subsection__bg__animation'
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if (this.animationType) {
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clazz += ` tn-subsection__bg__animation--${this.animationType}`
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}
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}
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if (buttonBgClass) {
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clazz += ` ${buttonBgClass}`
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}
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return clazz
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},
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// 滑块样式
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itemBarStyle() {
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let style = {}
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const buttonBgStyle = this.$t.color.getBackgroundColorStyle(this.buttonColor)
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if (buttonBgStyle) {
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style.backgroundColor = this.buttonColor
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}
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style.zIndex = 1
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if (this.mode === 'button') {
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style.borderRadius = `${this.borderRadius}rpx`
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style.bottom = `${this.buttonPadding}px`
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style.height = (this.height - (this.buttonPadding * 4)) + 'rpx'
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style.zIndex = 0
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}
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return Object.assign(this.itemBgStyle, style)
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}
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},
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mounted() {
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// 等待加载组件完成
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setTimeout(() => {
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this.getTabsInfo()
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}, 10)
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},
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methods: {
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// 改变滑块样式
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changeSectionStatus(val) {
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if (this.mode === 'subsection') {
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// 根据滑块在最左和最右时，显示对应的圆角
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if (val === this.list.length - 1) {
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this.itemBgStyle.borderRadius = `0 ${this.buttonPadding}px ${this.buttonPadding}px 0`
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}
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if (val === 0) {
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this.itemBgStyle.borderRadius = `${this.buttonPadding}px 0 0 ${this.buttonPadding}px`
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}
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if (val > 0 && val < this.list.length - 1) {
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this.itemBgStyle.borderRadius = '0'
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}
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}
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// 更新滑块的位置
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setTimeout(() => {
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this.itemBgLeft()
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}, 10)
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if (this.vibrateShort && !this.firstVibrateShort) {
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// 使手机产生短促震动，微信小程序有效，APP(HX 2.6.8)和H5无效
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// #ifndef H5
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uni.vibrateShort();
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// #endif
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}
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this.firstVibrateShort = false
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},
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// 获取各个tab的节点信息
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getTabsInfo() {
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let view = uni.createSelectorQuery().in(this)
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for (let i = 0; i < this.list.length; i++) {
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view.select('.section-item-' + i).boundingClientRect()
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}
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view.exec(res => {
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// 如果没有获取到，则重新获取
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if (!res.length) {
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setTimeout(() => {
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this.getTabsInfo()
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return
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}, 10)
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}
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// 将每个分段器的宽度放入listInfo中
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res.map((item, index) => {
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this.listInfo[index].width = item.width
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})
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// 初始化滑块的宽度
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if (this.mode === 'subsection') {
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this.itemBgStyle.width = this.listInfo[0].width + 'px'
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} else if (this.mode === 'button') {
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this.itemBgStyle.width = this.listInfo[0].width + 'px'
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}
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// 初始化滑块的位置
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this.itemBgLeft()
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})
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},
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// 设置滑块的位置
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itemBgLeft() {
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let left = 0
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// 计算当前活跃item到组件左边的距离
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this.listInfo.map((item, index) => {
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if (index < this.currentIndex) left += item.width
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})
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// 根据不同的模式，计算滑块的位置
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if (this.mode === 'subsection') {
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this.itemBgStyle.left = left + 'px'
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} else if (this.mode === 'button') {
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this.itemBgStyle.left = left + this.buttonPadding + 'px'
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}
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},
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// 点击事件
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click(index) {
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// 不允许点击当前激活的选项
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if (index === this.currentIndex) return
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this.currentIndex = index
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this.changeSectionStatus(index)
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this.$emit('change', {
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index: Number(index),
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name: this.listInfo[index]['name']
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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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.tn-subsection {
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/* #ifndef APP-PLUS */
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display: flex;
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flex-direction: row;
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/* #endif */
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align-items: center;
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overflow: hidden;
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position: relative;
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&__item {
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/* #ifndef APP-PLUS */
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display: flex;
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flex-direction: row;
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/* #endif */
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flex: 1;
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text-align: center;
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font-size: 26rpx;
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height: 100%;
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align-items: center;
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justify-content: center;
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color: #FFFFFF;
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padding: 0 6rpx;
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&--text {
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transition: all 0.3s;
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color: #FFFFFF;
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/* #ifndef APP-PLUS */
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display: flex;
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flex-direction: row;
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/* #endif */
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align-items: center;
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position: relative;
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z-index: 3;
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}
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&--first {
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border-top-left-radius: 8rpx;
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border-bottom-left-radius: 8rpx;
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}
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&--last {
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border-top-right-radius: 8rpx;
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border-bottom-right-radius: 8rpx;
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}
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&--none-border-right {
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border-right: none !important;
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}
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}
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&__bg {
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background-color: $tn-main-color;
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position: absolute;
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z-index: -1;
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transition-property: all;
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transition-duration: 0s;
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transition-timing-function: linear;
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&__animation {
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transition-duration: 0.25s !important;
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&--cubic-bezier {
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transition-timing-function: cubic-bezier(0.68, -0.55, 0.265, 1.55) !important;
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}
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}
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}
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}
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</style>
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