yunshangxie/tuniao-ui/components/tn-custom-swiper/tn-custom-swiper.vue

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2023-12-25 17:56:30 +08:00
<template>
<view
class="tn-c-swiper-class tn-c-swiper"
>
<!-- 轮播item容器-->
<view class="tn-swiper__container" :style="[swiperContainerStyle]" :animation="containerAnimation">
<slot></slot>
</view>
<!-- 轮播指示器-->
<view v-if="indicator" class="tn-swiper__indicator" :class="[`tn-swiper__indicator--${vertical ? 'vertical' : 'horizontal'}`]" :style="[indicatorStyle]">
<!-- 方形 -->
<block v-if="indicatorType === 'rect'">
<view
v-for="(item, index) in children.length"
:key="index"
class="tn-swiper__indicator__rect"
:class="[
`tn-swiper__indicator__rect--${vertical ? 'vertical' : 'horizontal'}`,
currentIndex === index ? `tn-swiper__indicator__rect--active tn-swiper__indicator__rect--active--${vertical ? 'vertical' : 'horizontal'}` : ''
]"
:style="[indicatorPointStyle(index)]"
></view>
</block>
<!-- -->
<block v-if="indicatorType === 'dot'">
<view
v-for="(item, index) in children.length"
:key="index"
class="tn-swiper__indicator__dot"
:class="[
`tn-swiper__indicator__dot--${vertical ? 'vertical' : 'horizontal'}`,
currentIndex === index ? `tn-swiper__indicator__dot--active tn-swiper__indicator__dot--active--${vertical ? 'vertical' : 'horizontal'}` : ''
]"
:style="[indicatorPointStyle(index)]"
></view>
</block>
<!-- 圆角方形 -->
<block v-if="indicatorType === 'round'">
<view
v-for="(item, index) in children.length"
:key="index"
class="tn-swiper__indicator__round"
:class="[
`tn-swiper__indicator__round--${vertical ? 'vertical' : 'horizontal'}`,
currentIndex === index ? `tn-swiper__indicator__round--active tn-swiper__indicator__round--active--${vertical ? 'vertical' : 'horizontal'}` : ''
]"
:style="[indicatorPointStyle(index)]"
></view>
</block>
<!-- 序号 -->
<block v-if="indicatorType === 'number' && !vertical">
<view class="tn-swiper__indicator__number">{{ currentIndex + 1 }}/{{ children.length }}</view>
</block>
</view>
</view>
</template>
<script>
export default {
name: 'tn-custom-swiper',
props: {
// 当前所在的轮播位置
current: {
type: Number,
default: 0
},
// 自动切换
autoplay: {
type: Boolean,
default: false
},
// 自动切换时间间隔
interval: {
type: Number,
default: 5000
},
// 滑动动画时长
duration: {
type: Number,
default: 500
},
// 是否采用衔接滑动
circular: {
type: Boolean,
default: false
},
// 滑动方向为纵向
vertical: {
type: Boolean,
default: false
},
// 显示指示点
indicator: {
type: Boolean,
default: false
},
// 指示点类型
// rect -> 方形 round -> 圆角方形 dot -> 点 number -> 轮播图下标
indicatorType: {
type: String,
default: 'dot'
},
// 指示点的位置
// topLeft \ topCenter \ topRight \ bottomLeft \ bottomCenter \ bottomRight
indicatorPosition: {
type: String,
default: 'bottomCenter'
},
// 指示点激活时颜色
indicatorActiveColor: {
type: String,
default: ''
},
// 指示点未激活时颜色
indicatorInactiveColor: {
type: String,
default: ''
},
// 前一个轮播的自定义样式
prevSwiperStyle: {
type: Object,
default() {
return {}
}
},
// 当前轮播的自定义样式
customSwiperStyle: {
type: Object,
default() {
return {}
}
},
// 后一个轮播的自定义样式
nextSwiperStyle: {
type: Object,
default() {
return {}
}
}
},
computed: {
parentData() {
return [
this.duration,
this.currentIndex,
this.swiperContainerAnimationFinish,
this.circular,
this.vertical,
this.prevSwiperStyle,
this.customSwiperStyle,
this.nextSwiperStyle
]
},
indicatorStyle() {
let style = {}
if (this.vertical) {
if (this.indicatorPosition === 'topLeft' || this.indicatorPosition === 'bottomLeft') style.justifyContent = 'flex-start'
if (this.indicatorPosition === 'topCenter' || this.indicatorPosition === 'bottomCenter') style.justifyContent = 'center'
if (this.indicatorPosition === 'topRight' || this.indicatorPosition === 'bottomRight') style.justifyContent = 'flex-end'
if (['topLeft','topCenter','topRight'].indexOf(this.indicatorPosition) >= 0) {
if (this.vertical) {
style.right = '12rpx'
style.left = 'auto'
} else {
style.top = '12rpx'
style.bottom = 'auto'
}
} else {
if (this.vertical) {
style.right = 'auto'
style.left = '12rpx'
} else {
style.top = 'auto'
style.bottom = '12rpx'
}
}
} else {
if (this.indicatorPosition === 'topLeft' || this.indicatorPosition === 'bottomLeft') style.justifyContent = 'flex-start'
if (this.indicatorPosition === 'topCenter' || this.indicatorPosition === 'bottomCenter') style.justifyContent = 'center'
if (this.indicatorPosition === 'topRight' || this.indicatorPosition === 'bottomRight') style.justifyContent = 'flex-end'
if (['topLeft','topCenter','topRight'].indexOf(this.indicatorPosition) >= 0) {
style.top = '12rpx'
style.bottom = 'auto'
} else {
style.top = 'auto'
style.bottom = '12rpx'
}
}
return style
},
indicatorPointStyle() {
return (index) => {
let style = {}
if (index === this.currentIndex && this.indicatorActiveColor !== '') {
style.backgroundColor = this.indicatorActiveColor
} else if (this.indicatorInactiveColor !== '') {
style.backgroundColor = this.indicatorInactiveColor
}
return style
}
}
},
watch: {
parentData() {
if (this.children.length) {
this.children.forEach((item) => {
// 判断子组件如果有updateParentData方法的话就就执行(执行的结果是子组件重新从父组件拉取了最新的值)
typeof(item.updateParentData) === 'function' && item.updateParentData()
})
}
},
current(nVal, oVal) {
if (this.currentIndex === nVal) return
this.currentIndex = nVal > this.children.length ? this.children.length - 1 : nVal
this.swiperContainerAnimationFinish = false
// 设置动画过渡时间
this.swiperContainerStyle.transitionDuration = `${this.duration + 90}ms`
this.updateSwiperContainerItem(oVal)
}
},
data() {
return {
// 清除动画定时器
clearAnimationTimer: null,
// 前后衔接执行定时器
convergeTimer: null,
// 自动轮播Timer
autoPlayTimer: null,
// 当前选中的轮播
currentIndex: this.current,
// swiperContainer样式
swiperContainerStyle: {
transform: 'translate3d(0px, 0px, 0px)',
transitionDuration: '0ms'
},
// swiperContainer动画
containerAnimation: {},
// 滑动动画结束标记
swiperContainerAnimationFinish: false
}
},
created() {
this.children = []
},
mounted() {
this.$nextTick(() => {
const index = this.currentIndex > this.children.length ? this.children.length - 1 : this.currentIndex
this.updateSwiperContainerStyle(index)
this.startAutoPlay()
})
},
methods: {
// 更新全部swiperItem的样式
updateAllSwiperItemStyle() {
this.children.forEach((item, index) => {
typeof(item.updateSwiperItemStyle) === 'function' && item.updateSwiperItemStyle(this.children.length)
})
},
// 根据swiperIndex更新swiperItemContainer的样式
updateSwiperContainerStyle(index) {
if (this.vertical) {
this.swiperContainerStyle.transform = `translate3d(0px, ${-index * 100}%, 0px)`
} else {
this.swiperContainerStyle.transform = `translate3d(${-index * 100}%, 0px, 0px)`
}
},
// 根据传递的值更新swiperItemContainer的位置
updateSwiperContainerStyleWithValue(value) {
if (this.vertical) {
this.swiperContainerStyle.transform = `translate3d(0px, ${(-this.currentIndex * 100) + value * 100}%, 0px)`
} else {
this.swiperContainerStyle.transform = `translate3d(${(-this.currentIndex * 100) + value * 100}%, 0px, 0px)`
}
},
// 根据传递的方向更新swiperItemContainer的位置
updateSwiperContainerStyleWithDirection(direction) {
const oldCurrent = this.currentIndex
const childrenLength = this.children.length
const lastSwiperItemIndex = childrenLength - 1
this.swiperContainerAnimationFinish = false
// 向后切换一个SwiperItem
if (direction === 'reset') {
// 设置动画过渡时间
this.swiperContainerStyle.transitionDuration = `${this.duration}ms`
this.updateSwiperContainerStyle(this.currentIndex)
this.clearAnimationTimer = setTimeout(() => {
this.clearSwiperContainerAnimation()
}, this.duration)
} else if (direction === 'reload') {
this.clearConvergeSwiperItemTimer()
this.clearSwiperContainerAnimation()
this.updateSwiperItemStyle(0)
this.updateSwiperItemStyle(lastSwiperItemIndex)
} else {
if (direction === 'left' || direction === 'up') {
if (oldCurrent === childrenLength - 1 && !this.circular) {
this.clearSwiperContainerAnimation()
this.clearConvergeSwiperItemTimer()
return
}
this.currentIndex = oldCurrent + 1 >= childrenLength ? 0 : oldCurrent + 1
} else if (direction === 'right' || direction === 'down') {
if (oldCurrent === 0 && !this.circular) {
this.clearSwiperContainerAnimation()
this.clearConvergeSwiperItemTimer()
return
}
this.currentIndex = oldCurrent - 1 < 0 ? childrenLength - 1 : oldCurrent - 1
}
// 设置动画过渡时间
this.swiperContainerStyle.transitionDuration = `${this.duration + 90}ms`
// this.updateSwiperItemContainerRect(this.currentIndex)
}
// console.log(direction, oldCurrent, this.currentIndex);
this.updateSwiperContainerItem(oldCurrent)
// 切换轮播时触发事件
this.$emit('change', {
current: this.currentIndex
})
},
// 设置自动轮播
startAutoPlay() {
if (this.autoplay && !this.autoPlayTimer && this.circular) {
this.autoPlayTimer = setInterval(() => {
this.updateSwiperContainerStyleWithDirection('left')
}, this.interval)
}
},
// 停止自动轮播
stopAutoPlay() {
if (this.autoPlayTimer) {
clearInterval(this.autoPlayTimer)
this.autoPlayTimer = null
}
},
// 更新swiperContainer和swiperItem相关联信息
updateSwiperContainerItem(oldCurrent) {
const childrenLength = this.children.length
const lastSwiperItemIndex = childrenLength - 1
// 判断当前是否为头尾如果是更新对应的头尾SwiperItem样式
// 更新swiperItemContainer的样式
if (oldCurrent === 0 && this.currentIndex === lastSwiperItemIndex) {
// 先移动到最左边然后再去除动画偏移到正常的位置
// this.swiperContainerStyle.transform = `translate3d(100%, 0px, 0px)`
this.updateSwiperContainerStyle(-1)
this.clearSwiperContainerAnimationTimer()
this.clearAnimationTimer = setTimeout(() => {
this.convergeSwiperItem()
}, this.duration)
} else if (oldCurrent === lastSwiperItemIndex && this.currentIndex === 0) {
// 先移动到最右边然后再去除动画偏移到正常的位置
// this.swiperContainerStyle.transform = `translate3d(${-childrenLength * 100}%, 0px, 0px)`
this.updateSwiperContainerStyle(childrenLength)
this.clearSwiperContainerAnimationTimer()
this.clearAnimationTimer = setTimeout(() => {
this.convergeSwiperItem()
}, this.duration)
} else {
this.updateSwiperContainerStyle(this.currentIndex)
this.updateSwiperItemStyle(0)
this.updateSwiperItemStyle(lastSwiperItemIndex)
this.clearAnimationTimer = setTimeout(() => {
this.clearSwiperContainerAnimation()
}, this.duration)
}
},
// 更新对应swiperItem的信息
updateSwiperItemStyle(index) {
const childrenLength = this.children.length
if (index < 0) index = 0
if (index > childrenLength - 1) index = childrenLength - 1
typeof(this.children[index].updateSwiperItemStyle) === 'function' && this.children[index].updateSwiperItemStyle(childrenLength, this.currentIndex)
},
// 更新对应swiperItem的容器信息
updateSwiperItemContainerRect(index) {
const childrenLength = this.children.length
if (index < 0) index = 0
if (index > childrenLength - 1) index = childrenLength - 1
typeof(this.children[index].getSwiperItemRect) === 'function' && this.children[index].getSwiperItemRect()
},
// 执行前后衔接
convergeSwiperItem() {
const lastSwiperItemIndex = this.children.length - 1
this.clearSwiperContainerAnimation()
this.clearConvergeSwiperItemTimer()
this.convergeTimer = setTimeout(() => {
this.updateSwiperItemStyle(0)
this.updateSwiperItemStyle(lastSwiperItemIndex)
this.updateSwiperContainerStyle(this.currentIndex)
this.clearConvergeSwiperItemTimer()
}, 30)
},
// 停止/清除切换动画
clearSwiperContainerAnimation() {
this.swiperContainerStyle.transitionDuration = `0ms`
this.swiperContainerAnimationFinish = true
this.clearSwiperContainerAnimationTimer()
},
// 停止/清除执行前后衔接定时器
clearConvergeSwiperItemTimer() {
if (this.convergeTimer) {
clearTimeout(this.convergeTimer)
this.convergeTimer = null
}
},
// 停止/清除切换动画定时器
clearSwiperContainerAnimationTimer() {
if (this.clearAnimationTimer) {
clearTimeout(this.clearAnimationTimer)
this.clearAnimationTimer = null
}
}
}
}
</script>
<style lang="scss" scoped>
.tn-c-swiper {
position: relative;
overflow: hidden;
width: 100%;
height: 100%;
.tn-swiper {
&__container {
width: 100%;
height: 100%;
position: absolute;
top: 0;
left: 0;
will-change: transform;
transition-property: all;
transition-timing-function: ease-out;
}
&__indicator {
position: absolute;
display: flex;
z-index: 1;
&--horizontal {
padding: 0 24rpx;
flex-direction: row;
width: 100%;
}
&--vertical {
padding: 24rpx 0;
flex-direction: column;
height: 100%;
}
&__rect {
background-color: rgba(0, 0, 0, 0.3);
transition: all 0.5s;
&--horizontal {
width: 26rpx;
height: 8rpx;
}
&--vertical {
width: 8rpx;
height: 26rpx;
}
&--active {
background-color: rgba(255, 255, 255, 0.8);
}
}
&__dot {
width: 14rpx;
height: 14rpx;
border-radius: 20rpx;
background-color: rgba(0, 0, 0, 0.3);
transition: all 0.5s;
&--horizontal {
margin: 0 6rpx;
}
&--vertical {
margin: 6rpx 0;
}
&--active {
background-color: rgba(255, 255, 255, 0.8);
}
}
&__round {
width: 14rpx;
height: 14rpx;
border-radius: 20rpx;
background-color: rgba(0, 0, 0, 0.3);
transition: all 0.5s;
&--horizontal {
margin: 0 6rpx;
}
&--vertical {
margin: 6rpx 0;
}
&--active {
background-color: rgba(255, 255, 255, 0.8);
&--horizontal {
width: 34rpx;
}
&--vertical {
height: 34rpx;
}
}
}
&__number {
padding: 6rpx 16rpx;
line-height: 1;
background-color: rgba(0, 0, 0, 0.3);
color: rgba(255, 255, 255, 0.8);
border-radius: 100rpx;
font-size: 26rpx;
}
}
}
}
</style>