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<template>
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<view
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class="uv-notice"
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@tap="clickHandler"
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>
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<slot name="icon">
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<view
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class="uv-notice__left-icon"
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v-if="icon"
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>
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<uv-icon
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:name="icon"
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:color="color"
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size="19"
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></uv-icon>
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</view>
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</slot>
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<view
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class="uv-notice__content"
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ref="uv-notice__content"
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>
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<view
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ref="uv-notice__content__text"
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class="uv-notice__content__text"
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:style="[animationStyle]"
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>
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<text
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v-for="(item, index) in innerText"
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:key="index"
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:style="[textStyle]"
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>{{item}}</text>
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</view>
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</view>
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<view
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class="uv-notice__right-icon"
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v-if="['link', 'closable'].includes(mode)"
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>
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<uv-icon
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v-if="mode === 'link'"
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name="arrow-right"
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:size="17"
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:color="color"
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></uv-icon>
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<uv-icon
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v-if="mode === 'closable'"
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@click="close"
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name="close"
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:size="16"
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:color="color"
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></uv-icon>
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</view>
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</view>
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</template>
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<script>
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import mpMixin from '@/uni_modules/uv-ui-tools/libs/mixin/mpMixin.js'
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import mixin from '@/uni_modules/uv-ui-tools/libs/mixin/mixin.js'
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import props from './props.js';
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// #ifdef APP-NVUE
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const animation = uni.requireNativePlugin('animation')
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const dom = uni.requireNativePlugin('dom')
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// #endif
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/**
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* RowNotice 滚动通知中的水平滚动模式
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* @description 水平滚动
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* @tutorial https://www.uvui.cn/components/noticeBar.html
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* @property {String | Number} text 显示的内容,字符串
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* @property {String} icon 是否显示左侧的音量图标 (默认 'volume' )
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* @property {String} mode 通告模式,link-显示右箭头,closable-显示右侧关闭图标
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* @property {String} color 文字颜色,各图标也会使用文字颜色 (默认 '#f9ae3d' )
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* @property {String} bgColor 背景颜色 (默认 ''#fdf6ec' )
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* @property {String | Number} fontSize 字体大小,单位px (默认 14 )
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* @property {String | Number} speed 水平滚动时的滚动速度,即每秒滚动多少px(rpx),这有利于控制文字无论多少时,都能有一个恒定的速度 (默认 80 )
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*
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* @event {Function} click 点击通告文字触发
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* @event {Function} close 点击右侧关闭图标触发
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* @example
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*/
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export default {
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name: 'uv-row-notice',
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emits: ['click','close'],
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mixins: [mpMixin, mixin, props],
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data() {
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return {
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animationDuration: '0', // 动画执行时间
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animationPlayState: 'paused', // 动画的开始和结束执行
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// nvue下,内容发生变化,导致滚动宽度也变化,需要标志为是否需要重新计算宽度
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// 不能在内容变化时直接重新计算,因为nvue的animation模块上一次的滚动不是刚好结束,会有影响
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nvueInit: true,
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show: true
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};
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},
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watch: {
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text: {
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immediate: true,
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handler(newValue, oldValue) {
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// #ifdef APP-NVUE
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this.nvueInit = true
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// #endif
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// #ifndef APP-NVUE
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this.vue()
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// #endif
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if(!this.$uv.test.string(newValue)) {
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this.$uv.error('noticebar组件direction为row时,要求text参数为字符串形式')
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}
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}
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},
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fontSize() {
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// #ifdef APP-NVUE
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this.nvueInit = true
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// #endif
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// #ifndef APP-NVUE
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this.vue()
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// #endif
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},
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speed() {
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// #ifdef APP-NVUE
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this.nvueInit = true
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// #endif
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// #ifndef APP-NVUE
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this.vue()
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// #endif
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}
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},
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computed: {
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// 文字内容的样式
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textStyle() {
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let style = {}
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style.color = this.color
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style.fontSize = this.$uv.addUnit(this.fontSize)
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return style
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},
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animationStyle() {
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let style = {}
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style.animationDuration = this.animationDuration
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style.animationPlayState = this.animationPlayState
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return style
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},
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// 内部对用户传入的数据进一步分割,放到多个text标签循环,否则如果用户传入的字符串很长(100个字符以上)
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// 放在一个text标签中进行滚动,在低端安卓机上,动画可能会出现抖动现象,需要分割到多个text中可解决此问题
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innerText() {
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let result = [],
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// 每组text标签的字符长度
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len = 20
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|
const textArr = this.text? this.text.split(''):[]
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|
for (let i = 0; i < textArr.length; i += len) {
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// 对拆分的后的text进行slice分割,得到的为数组再进行join拼接为字符串
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result.push(textArr.slice(i, i + len).join(''))
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|
}
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|
return result
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|
|
}
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},
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|
|
mounted() {
|
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|
|
// #ifdef APP-PLUS
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|
// 在APP上(含nvue),监听当前webview是否处于隐藏状态(进入下一页时即为hide状态)
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// 如果webivew隐藏了,为了节省性能的损耗,应停止动画的执行,同时也是为了保持进入下一页返回后,滚动位置保持不变
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|
var pages = getCurrentPages()
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|
var page = pages[pages.length - 1]
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|
var currentWebview = page.$getAppWebview()
|
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|
currentWebview.addEventListener('hide', () => {
|
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|
this.webviewHide = true
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|
|
})
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|
|
currentWebview.addEventListener('show', () => {
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|
this.webviewHide = false
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|
})
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|
|
// #endif
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this.init()
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},
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methods: {
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init() {
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// #ifdef APP-NVUE
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this.nvue()
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|
|
// #endif
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// #ifndef APP-NVUE
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this.vue()
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// #endif
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if(!this.$uv.test.string(this.text)) {
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this.$uv.error('noticebar组件direction为row时,要求text参数为字符串形式')
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}
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},
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|
|
// vue版处理
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|
|
async vue() {
|
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|
|
// #ifndef APP-NVUE
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|
|
let boxWidth = 0,
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|
|
textWidth = 0
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|
|
// 进行一定的延时
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|
|
await this.$uv.sleep()
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|
|
// 查询盒子和文字的宽度
|
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|
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textWidth = (await this.$uvGetRect('.uv-notice__content__text')).width
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|
|
boxWidth = (await this.$uvGetRect('.uv-notice__content')).width
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|
|
|
// 根据t=s/v(时间=路程/速度),这里为何不需要加上#uv-notice-box的宽度,因为中设置了.uv-notice-content样式中设置了padding-left: 100%
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|
|
// 恰巧计算出来的结果中已经包含了#uv-notice-box的宽度
|
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|
|
this.animationDuration = `${textWidth / this.$uv.getPx(this.speed)}s`
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|
|
// 这里必须这样开始动画,否则在APP上动画速度不会改变
|
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|
|
this.animationPlayState = 'paused'
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|
|
setTimeout(() => {
|
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|
|
this.animationPlayState = 'running'
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|
}, 10)
|
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|
|
// #endif
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|
|
},
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|
|
// nvue版处理
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|
|
async nvue() {
|
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|
|
|
// #ifdef APP-NVUE
|
|
|
|
|
this.nvueInit = false
|
|
|
|
|
let boxWidth = 0,
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|
|
textWidth = 0
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|
|
// 进行一定的延时
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|
|
await this.$uv.sleep()
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|
|
|
// 查询盒子和文字的宽度
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|
|
textWidth = (await this.getNvueRect('uv-notice__content__text')).width
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|
|
boxWidth = (await this.getNvueRect('uv-notice__content')).width
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|
|
// 将文字移动到盒子的右边沿,之所以需要这么做,是因为nvue不支持100%单位,否则可以通过css设置
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|
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animation.transition(this.$refs['uv-notice__content__text'], {
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|
|
styles: {
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|
|
transform: `translateX(${boxWidth}px)`
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|
},
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|
}, () => {
|
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|
|
// 如果非禁止动画,则开始滚动
|
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|
!this.stopAnimation && this.loopAnimation(textWidth, boxWidth)
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});
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|
// #endif
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},
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loopAnimation(textWidth, boxWidth) {
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|
|
// #ifdef APP-NVUE
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|
|
animation.transition(this.$refs['uv-notice__content__text'], {
|
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|
|
styles: {
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|
// 目标移动终点为-textWidth,也即当文字的最右边贴到盒子的左边框的位置
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|
|
transform: `translateX(-${textWidth}px)`
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|
},
|
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|
|
// 滚动时间的计算为,时间 = 路程(boxWidth + textWidth) / 速度,最后转为毫秒
|
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|
|
|
duration: (boxWidth + textWidth) / this.$uv.getPx(this.speed) * 1000,
|
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|
|
delay: 10
|
|
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|
|
}, () => {
|
|
|
|
|
animation.transition(this.$refs['uv-notice__content__text'], {
|
|
|
|
|
styles: {
|
|
|
|
|
// 重新将文字移动到盒子的右边沿
|
|
|
|
|
transform: `translateX(${this.stopAnimation ? 0 : boxWidth}px)`
|
|
|
|
|
},
|
|
|
|
|
}, () => {
|
|
|
|
|
// 如果非禁止动画,则继续下一轮滚动
|
|
|
|
|
if (!this.stopAnimation) {
|
|
|
|
|
// 判断是否需要初始化计算尺寸
|
|
|
|
|
if (this.nvueInit) {
|
|
|
|
|
this.nvue()
|
|
|
|
|
} else {
|
|
|
|
|
this.loopAnimation(textWidth, boxWidth)
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
});
|
|
|
|
|
})
|
|
|
|
|
// #endif
|
|
|
|
|
},
|
|
|
|
|
getNvueRect(el) {
|
|
|
|
|
// #ifdef APP-NVUE
|
|
|
|
|
// 返回一个promise
|
|
|
|
|
return new Promise(resolve => {
|
|
|
|
|
dom.getComponentRect(this.$refs[el], (res) => {
|
|
|
|
|
resolve(res.size)
|
|
|
|
|
})
|
|
|
|
|
})
|
|
|
|
|
// #endif
|
|
|
|
|
},
|
|
|
|
|
// 点击通告栏
|
|
|
|
|
clickHandler(index) {
|
|
|
|
|
this.$emit('click')
|
|
|
|
|
},
|
|
|
|
|
// 点击右侧按钮,需要判断点击的是关闭图标还是箭头图标
|
|
|
|
|
close() {
|
|
|
|
|
this.$emit('close')
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
// #ifdef APP-NVUE
|
|
|
|
|
// #ifdef VUE2
|
|
|
|
|
beforeDestroy() {
|
|
|
|
|
this.stopAnimation = true
|
|
|
|
|
},
|
|
|
|
|
// #endif
|
|
|
|
|
// #ifdef VUE3
|
|
|
|
|
unmounted() {
|
|
|
|
|
this.stopAnimation = true
|
|
|
|
|
}
|
|
|
|
|
// #endif
|
|
|
|
|
// #endif
|
|
|
|
|
};
|
|
|
|
|
</script>
|
|
|
|
|
|
|
|
|
|
<style lang="scss" scoped>
|
|
|
|
|
@import '@/uni_modules/uv-ui-tools/libs/css/components.scss';
|
|
|
|
|
@import '@/uni_modules/uv-ui-tools/libs/css/color.scss';
|
|
|
|
|
.uv-notice {
|
|
|
|
|
@include flex;
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|
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|
|
align-items: center;
|
|
|
|
|
justify-content: space-between;
|
|
|
|
|
|
|
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|
|
&__left-icon {
|
|
|
|
|
align-items: center;
|
|
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|
|
margin-right: 5px;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
&__right-icon {
|
|
|
|
|
margin-left: 5px;
|
|
|
|
|
align-items: center;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
&__content {
|
|
|
|
|
text-align: right;
|
|
|
|
|
flex: 1;
|
|
|
|
|
@include flex;
|
|
|
|
|
flex-wrap: nowrap;
|
|
|
|
|
overflow: hidden;
|
|
|
|
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&__text {
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font-size: 14px;
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color: $uv-warning;
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/* #ifndef APP-NVUE */
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// 这一句很重要,为了能让滚动左右连接起来
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padding-left: 100%;
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word-break: keep-all;
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white-space: nowrap;
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animation: uv-loop-animation 10s linear infinite both;
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/* #endif */
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@include flex(row);
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}
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}
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}
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/* #ifndef APP-NVUE */
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@keyframes uv-loop-animation {
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0% {
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transform: translate3d(0, 0, 0);
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}
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100% {
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transform: translate3d(-100%, 0, 0);
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}
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}
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/* #endif */
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</style>
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