359 lines
11 KiB
Vue
359 lines
11 KiB
Vue
<template>
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<view :id="instanceId" class="u-subsection" :class="customClass" :style="$u.toStyle(subsectionStyle, customStyle)">
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<view
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class="u-item u-line-1"
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:style="itemStyle(index)"
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@tap="click(index)"
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:class="[noBorderRight(index), `u-item-${index}`]"
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v-for="(item, index) in listInfo"
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:key="index"
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>
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<view :style="textStyle(index)" class="u-item-text u-line-1">{{ item.name }}</view>
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</view>
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<view class="u-item-bg" :style="itemBarStyle"></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-subsection',
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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 { ref, computed, watch, getCurrentInstance, nextTick } from 'vue';
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import { $u } from '../..';
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import { SubsectionProps } from './types';
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/**
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* subsection 分段器
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* @description 该分段器一般用于用户从几个选项中选择某一个的场景
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* @tutorial https://uviewpro.cn/zh/components/subsection.html
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* @property {Array} list 选项的数组，形式见上方"基本使用"
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* @property {String | Number} current 初始化时默认选中的选项索引值（默认0）
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* @property {String} activeColor 激活时的颜色，mode为subsection时固定为白色（默认var(--u-main-color)）
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* @property {String} inactiveColor 未激活时字体的颜色，mode为subsection时无效（默认var(--u-content-color)）
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* @property {String} mode 模式选择，见官网"模式选择"说明（默认button）
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* @property {String | Number} fontSize 字体大小，单位rpx（默认28）
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* @property {String | Number} height 组件高度，单位rpx（默认70）
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* @property {Boolean} animation 是否开启动画效果，见上方说明（默认true）
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* @property {Boolean} bold 激活选项的字体是否加粗（默认true）
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* @property {String} bgColor 组件背景颜色，mode为button时有效（默认var(--u-divider-color)）
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* @property {String} buttonColor 按钮背景颜色，mode为button时有效（默认var(--u-bg-white)）
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* @property {Boolean} vibrateShort 在切换分段器的时候，是否让设备震一下（默认false）
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* @event {Function} change 分段器选项发生改变时触发
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* @example <u-subsection active-color="var(--u-type-warning)"></u-subsection>
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*/
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interface ListItem {
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name: string;
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width?: number;
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[key: string]: any;
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}
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const props = defineProps(SubsectionProps);
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const emit = defineEmits<{ (e: 'change', index: number): void }>();
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// 组件内部状态
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const listInfo = ref<ListItem[]>([]);
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const itemBgStyle = ref<{ [key: string]: any }>({
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width: 0,
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left: 0,
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backgroundColor: 'var(--u-bg-white)',
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height: '100%',
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transition: ''
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});
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const currentIndex = ref(Number(props.current));
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const buttonPadding = 3; // mode = button 时，组件的内边距
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const borderRadius = 5; // 圆角值
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const firstTimeVibrateShort = ref(true); // 组件初始化时，会触发current变化，此时不应震动
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const instanceId = $u.guid(); // 组件唯一 id
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const instance = getCurrentInstance();
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// 监听 current 变化
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watch(
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() => props.current,
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nVal => {
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currentIndex.value = Number(nVal);
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changeSectionStatus(currentIndex.value);
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},
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{ immediate: true }
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);
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watch(
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() => props.list,
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() => {
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if (!props.list || !props.list.length) return;
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initListInfo();
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// 重新获取各个tab的宽度信息
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nextTick(() => {
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setTimeout(() => {
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getTabsInfo();
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}, 10);
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});
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},
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{ deep: true, immediate: true }
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);
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watch(
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() => props.mode,
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() => {
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// 重新获取各个tab的宽度信息
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nextTick(() => {
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setTimeout(() => {
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getTabsInfo();
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}, 10);
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});
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}
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);
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// 初始化 listInfo
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function initListInfo() {
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// 将list的数据，传入listInfo数组，因为不能修改props传递的list值
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// 可以接受直接数组形式，或者数组元素为对象的形式，如：['简介', '评论'],或者[{name: '简介'}, {name: '评论'}]
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listInfo.value = props.list.map(val => {
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if (typeof val !== 'object') {
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return { width: 0, name: val };
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} else {
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return { ...val, width: 0 };
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}
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});
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}
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/**
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* 设置mode=subsection时，滑块特有的样式
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*/
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const noBorderRight = computed<(index: number) => string>(() => {
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return (index: number) => {
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if (props.mode !== 'subsection') return '';
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let classs = '';
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// 不显示右边的边框
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if (index < props.list.length - 1) classs += ' u-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) classs += ' u-item-first';
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if (index === props.list.length - 1) classs += ' u-item-last';
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return classs;
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};
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});
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/**
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* 文字的样式
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*/
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const textStyle = computed<(index: number) => Record<string, any>>(() => {
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return (index: number) => {
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const style: Record<string, any> = {};
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// 设置字体颜色
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if (props.mode === 'subsection') {
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style.color = index === currentIndex.value ? 'var(--u-white-color)' : props.activeColor;
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} else {
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style.color = index === currentIndex.value ? props.activeColor : props.inactiveColor;
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}
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// 字体加粗
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if (index === currentIndex.value && props.bold) style.fontWeight = 'bold';
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// 文字大小
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style.fontSize = props.fontSize + 'rpx';
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return style;
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};
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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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*/
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const itemStyle = computed<(index: number) => Record<string, any>>(() => {
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return (index: number) => {
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const style: Record<string, any> = {};
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if (props.mode === 'subsection') {
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style.borderColor = props.activeColor;
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style.borderWidth = '1px';
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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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/**
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* mode=button时，外层view的样式
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*/
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const subsectionStyle = computed<Record<string, any>>(() => {
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const style: Record<string, any> = {};
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style.height = uni.upx2px(Number(props.height)) + 'px';
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if (props.mode === 'button') {
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style.backgroundColor = props.bgColor;
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style.padding = `${buttonPadding}px`;
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style.borderRadius = `${borderRadius}px`;
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}
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return style;
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});
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/**
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* 滑块的样式
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*/
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const itemBarStyle = computed<Record<string, any>>(() => {
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const style: Record<string, any> = {};
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style.backgroundColor = props.activeColor;
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style.zIndex = 1;
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if (props.mode === 'button') {
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style.backgroundColor = props.buttonColor;
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style.borderRadius = `${borderRadius}px`;
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style.bottom = `${buttonPadding}px`;
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style.height = uni.upx2px(Number(props.height)) - buttonPadding * 2 + 'px';
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style.zIndex = 0;
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}
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return Object.assign({}, itemBgStyle.value, style);
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});
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/**
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* 改变滑块的样式
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* @param nVal 当前选中索引
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*/
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function changeSectionStatus(nVal: number) {
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if (props.mode === 'subsection') {
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// 根据滑块在最左边和最右边时，显示左边和右边的圆角
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if (nVal === props.list.length - 1) {
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itemBgStyle.value.borderRadius = `0 ${buttonPadding}px ${buttonPadding}px 0`;
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}
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if (nVal === 0) {
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itemBgStyle.value.borderRadius = `${buttonPadding}px 0 0 ${buttonPadding}px`;
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}
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if (nVal > 0 && nVal < props.list.length - 1) {
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itemBgStyle.value.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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itemBgLeft();
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}, 10);
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if (props.vibrateShort && !firstTimeVibrateShort.value) {
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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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// 第一次过后，设置firstTimeVibrateShort为false，让其下一次可以震动(如果允许震动的话)
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firstTimeVibrateShort.value = false;
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}
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/**
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* 点击分段器选项
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* @param index 当前点击索引
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*/
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function click(index: number) {
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// 不允许点击当前激活选项
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if (index === currentIndex.value) return;
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currentIndex.value = index;
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changeSectionStatus(index);
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emit('change', index);
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}
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/**
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* 获取各个tab的节点信息
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*/
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function getTabsInfo() {
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const view = uni.createSelectorQuery().in(instance?.proxy);
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for (let i = 0; i < props.list.length; i++) {
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view.select(`#${instanceId} .u-item-${i}`).boundingClientRect();
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}
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view.exec((res: any[]) => {
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if (!res.length) {
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setTimeout(() => {
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getTabsInfo();
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return;
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}, 10);
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}
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// 将分段器每个item的宽度，放入listInfo数组
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res.map((val, index) => {
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listInfo.value[index].width = val.width;
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});
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// 初始化滑块的宽度
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if (props.mode === 'subsection' || props.mode === 'button') {
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itemBgStyle.value.width = listInfo.value[0]?.width + 'px';
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}
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// 初始化滑块的位置
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itemBgLeft();
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});
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}
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/**
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* 计算滑块左侧距离
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*/
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function itemBgLeft() {
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// 根据是否开启动画效果
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if (props.animation) {
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itemBgStyle.value.transition = 'all 0.35s';
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} else {
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itemBgStyle.value.transition = 'all 0s';
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}
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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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listInfo.value.forEach((val, index) => {
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if (index < currentIndex.value) left += val.width ?? 0;
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});
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// 根据mode不同模式，计算滑块需要移动的距离
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if (props.mode === 'subsection') {
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itemBgStyle.value.left = left + 'px';
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} else if (props.mode === 'button') {
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itemBgStyle.value.left = left + buttonPadding + 'px';
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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-subsection {
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@include vue-flex;
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align-items: center;
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overflow: hidden;
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position: relative;
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}
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.u-item {
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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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@include vue-flex;
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align-items: center;
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justify-content: center;
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color: $u-main-color;
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padding: 0 6rpx;
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}
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.u-item-bg {
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background-color: $u-type-primary;
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position: absolute;
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z-index: -1;
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}
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.u-none-border-right {
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border-right: none !important;
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}
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.u-item-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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.u-item-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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.u-item-text {
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transition: all 0.35s;
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color: $u-main-color;
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@include vue-flex;
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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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</style>
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