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- <template>
- <view
- v-if="show"
- class="u-notice-bar"
- :style="{
- background: computeBgColor,
- padding: padding
- }"
- :class="[
- type ? `u-type-${type}-light-bg` : ''
- ]"
- >
- <view class="u-direction-row">
- <view class="u-icon-wrap">
- <u-icon class="u-left-icon" v-if="volumeIcon" name="volume-fill" :size="volumeSize" :color="computeColor"></u-icon>
- </view>
- <view class="u-notice-box" id="u-notice-box">
- <view
- class="u-notice-content"
- id="u-notice-content"
- :style="{
- animationDuration: animationDuration,
- animationPlayState: animationPlayState,
- }"
- >
- <text class="u-notice-text" @tap="click" :style="[textStyle]"
- :class="['u-type-' + type]">{{showText}}</text>
- </view>
- </view>
- <view class="u-icon-wrap">
- <u-icon @click="getMore" class="u-right-icon" v-if="moreIcon" name="arrow-right" :size="26" :color="computeColor"></u-icon>
- <u-icon @click="close" class="u-right-icon" v-if="closeIcon" name="close" :size="24" :color="computeColor"></u-icon>
- </view>
- </view>
- </view>
- </template>
- <script>
- export default {
- props: {
- // 显示的内容,数组
- list: {
- type: Array,
- default() {
- return [];
- }
- },
- // 显示的主题,success|error|primary|info|warning|none
- // none主题默认为透明背景,黑色(contentColor)字体
- type: {
- type: String,
- default: 'warning'
- },
- // 是否显示左侧的音量图标
- volumeIcon: {
- type: Boolean,
- default: true
- },
- // 是否显示右侧的右箭头图标
- moreIcon: {
- type: Boolean,
- default: false
- },
- // 是否显示右侧的关闭图标
- closeIcon: {
- type: Boolean,
- default: false
- },
- // 是否自动播放
- autoplay: {
- type: Boolean,
- default: true
- },
- // 文字颜色,各图标也会使用文字颜色
- color: {
- type: String,
- default: ''
- },
- // 背景颜色
- bgColor: {
- type: String,
- default: ''
- },
- // 是否显示
- show: {
- type: Boolean,
- default: true
- },
- // 字体大小,单位rpx
- fontSize: {
- type: [Number, String],
- default: 26
- },
- // 音量喇叭的大小
- volumeSize: {
- type: [Number, String],
- default: 34
- },
- // 水平滚动时的滚动速度,即每秒滚动多少rpx,这有利于控制文字无论多少时,都能有一个恒定的速度
- speed: {
- type: [Number, String],
- default: 160
- },
- // 播放状态,play-播放,paused-暂停
- playState: {
- type: String,
- default: 'play'
- },
- // 通知的边距
- padding: {
- type: [Number, String],
- default: '18rpx 24rpx'
- }
- },
- data() {
- return {
- textWidth: 0, // 滚动的文字宽度
- boxWidth: 0, // 供文字滚动的父盒子的宽度,和前者一起为了计算滚动速度
- animationDuration: '10s', // 动画执行时间
- animationPlayState: 'paused', // 动画的开始和结束执行
- showText: '' // 显示的文本
- };
- },
- watch: {
- list: {
- immediate: true,
- handler(val) {
- this.showText = val.join(',');
- this.$nextTick(() => {
- this.initSize();
- });
- }
- },
- playState(val) {
- if(val == 'play') this.animationPlayState = 'running';
- else this.animationPlayState = 'paused';
- },
- speed(val) {
- this.initSize();
- }
- },
- computed: {
- // 计算字体颜色,如果没有自定义的,就用uview主题颜色
- computeColor() {
- if (this.color) return this.color;
- // 如果是无主题,就默认使用content-color
- else if(this.type == 'none') return '#606266';
- else return this.type;
- },
- // 文字内容的样式
- textStyle() {
- let style = {};
- if (this.color) style.color = this.color;
- else if(this.type == 'none') style.color = '#606266';
- style.fontSize = this.fontSize + 'rpx';
- return style;
- },
- // 计算背景颜色
- computeBgColor() {
- if (this.bgColor) return this.bgColor;
- else if(this.type == 'none') return 'transparent';
- }
- },
- mounted() {
- this.$nextTick(() => {
- this.initSize();
- });
- },
- methods: {
- initSize() {
- let query = [],
- boxWidth = 0,
- textWidth = 0;
- let textQuery = new Promise((resolve, reject) => {
- uni.createSelectorQuery()
- .in(this)
- .select(`#u-notice-content`)
- .boundingClientRect()
- .exec(ret => {
- this.textWidth = ret[0].width;
- resolve();
- });
- });
- query.push(textQuery);
- Promise.all(query).then(() => {
- // 根据t=s/v(时间=路程/速度),这里为何不需要加上#u-notice-box的宽度,因为中设置了.u-notice-content样式中设置了padding-left: 100%
- // 恰巧计算出来的结果中已经包含了#u-notice-box的宽度
- this.animationDuration = `${this.textWidth / uni.upx2px(this.speed)}s`;
- // 这里必须这样开始动画,否则在APP上动画速度不会改变(HX版本2.4.6,IOS13)
- this.animationPlayState = 'paused';
- setTimeout(() => {
- if(this.playState == 'play' && this.autoplay) this.animationPlayState = 'running';
- }, 10);
- });
- },
- // 点击通告栏
- click(index) {
- this.$emit('click');
- },
- // 点击关闭按钮
- close() {
- this.$emit('close');
- },
- // 点击更多箭头按钮
- getMore() {
- this.$emit('getMore');
- }
- }
- };
- </script>
-
- <style lang="scss" scoped>
- @import "../../libs/css/style.components.scss";
-
- .u-notice-bar {
- padding: 18rpx 24rpx;
- overflow: hidden;
- }
-
- .u-direction-row {
- @include vue-flex;
- align-items: center;
- justify-content: space-between;
- }
-
- .u-left-icon {
- /* #ifndef APP-NVUE */
- display: inline-flex;
- /* #endif */
- align-items: center;
- }
-
- .u-notice-box {
- flex: 1;
- @include vue-flex;
- overflow: hidden;
- margin-left: 12rpx;
- }
-
- .u-right-icon {
- margin-left: 12rpx;
- display: inline-flex;
- align-items: center;
- }
-
- .u-notice-content {
- animation: u-loop-animation 10s linear infinite both;
- text-align: right;
- // 这一句很重要,为了能让滚动左右连接起来
- padding-left: 100%;
- @include vue-flex;
- flex-wrap: nowrap;
- }
-
- .u-notice-text {
- font-size: 26rpx;
- word-break: keep-all;
- white-space: nowrap
- }
-
- @keyframes u-loop-animation {
- 0% {
- transform: translate3d(0, 0, 0);
- }
-
- 100% {
- transform: translate3d(-100%, 0, 0);
- }
- }
- </style>
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