103 lines
2.3 KiB
Vue
103 lines
2.3 KiB
Vue
<script setup>
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import { onMounted, reactive, ref, watch } from 'vue'
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import {
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getSlideOffset,
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slideInit,
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slideReset,
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slideTouchEnd,
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slideTouchMove,
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slideTouchStart
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} from '@/utils/slide'
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import { SlideType } from '@/utils/const_var'
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import { _css } from '@/utils/dom'
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const props = defineProps({
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index: {
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type: Number,
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default: () => {
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return 0
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}
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},
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//改变index，是否使用动画
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changeActiveIndexUseAnim: {
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type: Boolean,
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default: true
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},
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name: {
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type: String,
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default: () => 'SlideVertical'
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}
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})
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const emit = defineEmits(['update:index'])
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//slide-list的ref引用
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const slideListEl = ref(null)
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const state = reactive({
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judgeValue: 20, //一个用于判断滑动朝向的固定值
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type: SlideType.VERTICAL, //组件类型
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name: props.name,
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localIndex: props.index, //当前下标
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needCheck: true, //是否需要检测，每次按下都需要检测，up事件会重置为true
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next: false, //能否滑动
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isDown: false, //是否按下，用于move事件判断
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start: { x: 0, y: 0, time: 0 }, //按下时的起点坐标
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move: { x: 0, y: 0 }, //移动时的坐标
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//slide-list的宽度和子元素数量
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wrapper: {
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width: 0,
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height: 0,
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//childrenLength用于canNext方法判断当前页是否是最后一页，是则不能滑动，不捕获事件
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childrenLength: 0
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}
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})
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watch(
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() => props.index,
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(newVal) => {
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if (state.localIndex !== newVal) {
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state.localIndex = newVal
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if (props.changeActiveIndexUseAnim) {
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_css(slideListEl.value, 'transition-duration', `300ms`)
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}
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_css(
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slideListEl.value,
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'transform',
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`translate3d(0,${getSlideOffset(state, slideListEl.value)}px, 0)`
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)
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}
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}
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)
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onMounted(() => {
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slideInit(slideListEl.value, state)
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})
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function touchStart(e) {
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slideTouchStart(e, slideListEl.value, state)
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}
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function touchMove(e) {
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slideTouchMove(e, slideListEl.value, state)
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}
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function touchEnd(e) {
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slideTouchEnd(e, state)
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slideReset(e, slideListEl.value, state, emit)
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}
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</script>
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<template>
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<div class="slide v">
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<div
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class="slide-list flex-direction-column"
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ref="slideListEl"
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@pointerdown.prevent="touchStart"
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@pointermove.prevent="touchMove"
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@pointerup.prevent="touchEnd"
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>
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<slot></slot>
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</div>
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</div>
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</template>
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