157 lines
4.5 KiB
Vue
157 lines
4.5 KiB
Vue
<template>
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<view
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class="u-switch"
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:class="[isChecked ? 'u-switch--on' : '', disabled ? 'u-switch--disabled' : '', customClass]"
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@tap="onClick"
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:style="$u.toStyle(switchStyle, customStyle)"
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>
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<view
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class="u-switch__node node-class"
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:style="{
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width: $u.addUnit(size ?? 50),
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height: $u.addUnit(size ?? 50)
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}"
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>
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<u-loading :show="loading" class="u-switch__loading" :size="Number(size) * 0.6" :color="loadingColor" />
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</view>
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</view>
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</template>
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<script lang="ts">
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export default {
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name: 'u-switch',
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options: {
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addGlobalClass: true,
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// #ifndef MP-TOUTIAO
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virtualHost: true,
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// #endif
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styleIsolation: 'shared'
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}
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};
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</script>
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<script setup lang="ts">
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import { computed, nextTick } from 'vue';
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import { $u } from '../..';
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import { SwitchProps } from './types';
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/**
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* switch 开关选择器
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* @description 选择开关一般用于只有两个选择，且只能选其一的场景。
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* @tutorial https://uviewpro.cn/zh/components/switch.html
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* @property {Boolean} loading 是否处于加载中（默认false）
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* @property {Boolean} disabled 是否禁用（默认false）
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* @property {String|Number} size 开关尺寸，单位rpx（默认50）
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* @property {String} active-color 打开时的背景色（默认主题色primary）
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* @property {String} inactive-color 关闭时的背景色（默认var(--u-bg-white)）
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* @property {Boolean|Number|String} active-value 打开选择器时通过change事件发出的值（默认true）
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* @property {Boolean|Number|String} inactive-value 关闭选择器时通过change事件发出的值（默认false）
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* @event {Function} change 在switch打开或关闭时触发
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* @example <u-switch v-model="checked" active-color="red" inactive-color="var(--u-divider-color)"></u-switch>
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*/
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const props = defineProps(SwitchProps);
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const emit = defineEmits(['update:modelValue', 'change']);
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/**
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* 计算属性：是否处于激活状态
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* 通过比较modelValue和activeValue来确定开关的真实状态
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*/
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const isChecked = computed(() => {
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return props.modelValue === props.activeValue;
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});
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/**
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* 计算开关样式
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*/
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const switchStyle = computed(() => {
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let style: Record<string, string> = {};
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style.fontSize = props.size + 'rpx';
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style.backgroundColor = isChecked.value ? props.activeColor : props.inactiveColor;
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return style;
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});
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/**
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* 计算加载动画颜色
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*/
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const loadingColor = computed(() => {
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return isChecked.value ? props.activeColor : undefined;
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});
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/**
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* 点击开关
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*/
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function onClick() {
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if (!props.disabled && !props.loading) {
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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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if (props.vibrateShort) uni.vibrateShort();
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// 根据当前状态切换到另一个值
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const newValue = isChecked.value ? props.inactiveValue : props.activeValue;
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emit('update:modelValue', newValue);
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// 放到下一个生命周期，因为双向绑定的value修改父组件状态需要时间，且是异步的
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nextTick(() => {
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emit('change', newValue);
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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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@import '../../libs/css/style.components.scss';
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.u-switch {
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position: relative;
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/* #ifndef APP-NVUE */
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display: inline-block;
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/* #endif */
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box-sizing: initial;
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width: 2em;
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height: 1em;
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background-color: var(--u-bg-white);
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border: 1px solid rgba(0, 0, 0, 0.1);
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border-radius: 1em;
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transition: background-color 0.3s;
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font-size: 50rpx;
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}
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.u-switch__node {
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@include vue-flex;
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align-items: center;
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justify-content: center;
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position: absolute;
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top: 0;
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left: 0;
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border-radius: 100%;
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z-index: 1;
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background-color: var(--u-bg-white);
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box-shadow:
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0 3px 1px 0 rgba(0, 0, 0, 0.05),
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0 2px 2px 0 rgba(0, 0, 0, 0.1),
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0 3px 3px 0 rgba(0, 0, 0, 0.05);
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transition: transform 0.3s cubic-bezier(0.3, 1.05, 0.4, 1.05);
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transition:
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transform 0.3s cubic-bezier(0.3, 1.05, 0.4, 1.05),
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-webkit-transform 0.3s cubic-bezier(0.3, 1.05, 0.4, 1.05);
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transition: transform cubic-bezier(0.3, 1.05, 0.4, 1.05);
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transition: transform 0.3s cubic-bezier(0.3, 1.05, 0.4, 1.05);
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}
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.u-switch__loading {
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@include vue-flex;
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align-items: center;
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justify-content: center;
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}
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.u-switch--on {
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background-color: $u-type-primary;
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}
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.u-switch--on .u-switch__node {
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transform: translateX(100%);
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}
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.u-switch--disabled {
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opacity: 0.4;
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}
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</style>
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