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319 lines
8.9 KiB
319 lines
8.9 KiB
3 years ago
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<template>
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<view class="u-countdown">
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<view class="u-countdown-item" :style="[itemStyle]" v-if="showDays && (hideZeroDay || (!hideZeroDay && d != '00'))">
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<view class="u-countdown-time" :style="[letterStyle]">
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{{ d }}
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</view>
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</view>
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<view
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class="u-countdown-colon"
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:style="{fontSize: separatorSize + 'rpx', color: separatorColor, paddingBottom: separator == 'colon' ? '4rpx' : 0}"
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v-if="showDays && (hideZeroDay || (!hideZeroDay && d != '00'))"
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>
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{{ separator == 'colon' ? ':' : '天' }}
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</view>
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<view class="u-countdown-item" :style="[itemStyle]" v-if="showHours">
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<view class="u-countdown-time" :style="{ fontSize: fontSize + 'rpx', color: color}">
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{{ h }}
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</view>
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</view>
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<view
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class="u-countdown-colon"
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:style="{fontSize: separatorSize + 'rpx', color: separatorColor, paddingBottom: separator == 'colon' ? '4rpx' : 0}"
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v-if="showHours"
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>
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{{ separator == 'colon' ? ':' : '时' }}
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</view>
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<view class="u-countdown-item" :style="[itemStyle]" v-if="showMinutes">
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<view class="u-countdown-time" :style="{ fontSize: fontSize + 'rpx', color: color}">
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{{ i }}
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</view>
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</view>
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<view
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class="u-countdown-colon"
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:style="{fontSize: separatorSize + 'rpx', color: separatorColor, paddingBottom: separator == 'colon' ? '4rpx' : 0}"
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v-if="showMinutes"
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>
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{{ separator == 'colon' ? ':' : '分' }}
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</view>
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<view class="u-countdown-item" :style="[itemStyle]" v-if="showSeconds">
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<view class="u-countdown-time" :style="{ fontSize: fontSize + 'rpx', color: color}">
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{{ s }}
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</view>
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</view>
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<view
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class="u-countdown-colon"
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:style="{fontSize: separatorSize + 'rpx', color: separatorColor, paddingBottom: separator == 'colon' ? '4rpx' : 0}"
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v-if="showSeconds && separator == 'zh'"
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>
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秒
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</view>
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</view>
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</template>
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<script>
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/**
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* countDown 倒计时
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* @description 该组件一般使用于某个活动的截止时间上，通过数字的变化，给用户明确的时间感受，提示用户进行某一个行为操作。
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* @tutorial https://www.uviewui.com/components/countDown.html
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* @property {String Number} timestamp 倒计时，单位为秒
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* @property {Boolean} autoplay 是否自动开始倒计时，如果为false，需手动调用开始方法。见官网说明（默认true）
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* @property {String} separator 分隔符，colon为英文冒号，zh为中文（默认colon）
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* @property {String Number} separator-size 分隔符的字体大小，单位rpx（默认30）
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* @property {String} separator-color 分隔符的颜色（默认#303133）
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* @property {String Number} font-size 倒计时字体大小，单位rpx（默认30）
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* @property {Boolean} show-border 是否显示倒计时数字的边框（默认false）
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* @property {Boolean} hide-zero-day 当"天"的部分为0时，隐藏该字段 （默认true）
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* @property {String} border-color 数字边框的颜色（默认#303133）
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* @property {String} bg-color 倒计时数字的背景颜色（默认#ffffff）
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* @property {String} color 倒计时数字的颜色（默认#303133）
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* @property {String} height 数字高度值(宽度等同此值)，设置边框时看情况是否需要设置此值，单位rpx（默认auto）
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* @property {Boolean} show-days 是否显示倒计时的"天"部分（默认true）
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* @property {Boolean} show-hours 是否显示倒计时的"时"部分（默认true）
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* @property {Boolean} show-minutes 是否显示倒计时的"分"部分（默认true）
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* @property {Boolean} show-seconds 是否显示倒计时的"秒"部分（默认true）
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* @event {Function} end 倒计时结束
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* @event {Function} change 每秒触发一次，回调为当前剩余的倒计秒数
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* @example <u-count-down ref="uCountDown" :timestamp="86400" :autoplay="false"></u-count-down>
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*/
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export default {
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name: 'u-count-down',
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props: {
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// 倒计时的时间，秒为单位
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timestamp: {
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type: [Number, String],
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default: 0
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},
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// 是否自动开始倒计时
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autoplay: {
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type: Boolean,
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default: true
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},
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// 用英文冒号(colon)或者中文(zh)当做分隔符，false的时候为中文，如："11:22"或"11时22秒"
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separator: {
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type: String,
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default: 'colon'
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},
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// 分隔符的大小，单位rpx
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separatorSize: {
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type: [Number, String],
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default: 30
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},
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// 分隔符颜色
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separatorColor: {
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type: String,
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default: "#303133"
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},
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// 字体颜色
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color: {
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type: String,
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default: '#303133'
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},
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// 字体大小，单位rpx
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fontSize: {
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type: [Number, String],
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default: 30
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},
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// 背景颜色
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bgColor: {
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type: String,
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default: '#fff'
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},
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// 数字框高度，单位rpx
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height: {
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type: [Number, String],
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default: 'auto'
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},
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// 是否显示数字框
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showBorder: {
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type: Boolean,
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default: false
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},
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// 边框颜色
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borderColor: {
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type: String,
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default: '#303133'
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},
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// 是否显示秒
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showSeconds: {
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type: Boolean,
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default: true
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},
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// 是否显示分钟
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showMinutes: {
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type: Boolean,
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default: true
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},
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// 是否显示小时
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showHours: {
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type: Boolean,
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default: true
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},
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// 是否显示“天”
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showDays: {
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type: Boolean,
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default: true
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},
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// 当"天"的部分为0时，不显示
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hideZeroDay: {
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type: Boolean,
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default: false
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}
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},
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watch: {
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// 监听时间戳的变化
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timestamp(newVal, oldVal) {
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// 如果倒计时间发生变化，清除定时器，重新开始倒计时
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this.clearTimer();
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this.start();
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}
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},
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data() {
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return {
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d: '00', // 天的默认值
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h: '00', // 小时的默认值
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i: '00', // 分钟的默认值
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s: '00', // 秒的默认值
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timer: null ,// 定时器
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seconds: 0, // 记录不停倒计过程中变化的秒数
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};
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},
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computed: {
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// 倒计时item的样式，item为分别的时分秒部分的数字
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itemStyle() {
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let style = {};
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if(this.height) {
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style.height = this.height + 'rpx';
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style.width = this.height + 'rpx';
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}
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if(this.showBorder) {
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style.borderStyle = 'solid';
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style.borderColor = this.borderColor;
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style.borderWidth = '1px';
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}
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if(this.bgColor) {
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style.backgroundColor = this.bgColor;
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}
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return style;
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},
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// 倒计时数字的样式
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letterStyle() {
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let style = {};
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if(this.fontSize) style.fontSize = this.fontSize + 'rpx';
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if(this.color) style.color = this.color;
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return style;
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}
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},
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mounted() {
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// 如果自动倒计时
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this.autoplay && this.timestamp && this.start();
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},
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methods: {
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// 倒计时
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start() {
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// 避免可能出现的倒计时重叠情况
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this.clearTimer();
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if (this.timestamp <= 0) return;
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this.seconds = Number(this.timestamp);
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this.formatTime(this.seconds);
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this.timer = setInterval(() => {
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this.seconds--;
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// 发出change事件
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this.$emit('change', this.seconds);
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if (this.seconds < 0) {
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return this.end();
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}
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this.formatTime(this.seconds);
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}, 1000);
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},
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// 格式化时间
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formatTime(seconds) {
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// 小于等于0的话，结束倒计时
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seconds <= 0 && this.end();
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let [day, hour, minute, second] = [0, 0, 0, 0];
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day = Math.floor(seconds / (60 * 60 * 24));
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// 判断是否显示“天”参数，如果不显示，将天部分的值，加入到小时中
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// hour为给后面计算秒和分等用的(基于显示天的前提下计算)
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hour = Math.floor(seconds / (60 * 60)) - day * 24;
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// showHour为需要显示的小时
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let showHour = null;
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if(this.showDays) {
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showHour = hour;
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} else {
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// 如果不显示天数，将“天”部分的时间折算到小时中去
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showHour = Math.floor(seconds / (60 * 60));
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}
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minute = Math.floor(seconds / 60) - hour * 60 - day * 24 * 60;
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second = Math.floor(seconds) - day * 24 * 60 * 60 - hour * 60 * 60 - minute * 60;
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// 如果小于10，在前面补上一个"0"
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showHour = showHour < 10 ? '0' + showHour : showHour;
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minute = minute < 10 ? '0' + minute : minute;
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second = second < 10 ? '0' + second : second;
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day = day < 10 ? '0' + day : day;
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this.d = day;
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this.h = showHour;
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this.i = minute;
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this.s = second;
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},
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// 停止倒计时
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end() {
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this.clearTimer();
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this.$emit('end', {});
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},
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// 清除定时器
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clearTimer() {
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if(this.timer) {
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// 清除定时器
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clearInterval(this.timer);
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this.timer = null;
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}
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}
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},
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beforeDestroy() {
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clearInterval(this.timer);
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this.timer = null;
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}
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};
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</script>
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<style scoped lang="scss">
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@import "../../libs/css/style.components.scss";
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.u-countdown {
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/* #ifndef APP-NVUE */
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display: inline-flex;
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/* #endif */
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align-items: center;
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}
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.u-countdown-item {
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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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padding: 2rpx;
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border-radius: 6rpx;
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white-space: nowrap;
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transform: translateZ(0);
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}
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.u-countdown-time {
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margin: 0;
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padding: 0;
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line-height: 1;
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}
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.u-countdown-colon {
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@include vue-flex;
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justify-content: center;
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padding: 0 5rpx;
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line-height: 1;
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align-items: center;
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padding-bottom: 4rpx;
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}
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.u-countdown-scale {
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transform: scale(0.9);
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transform-origin: center center;
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}
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</style>
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