hengmei-two/components/lw-notice/lw-notice.vue

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<template>
<view>
<view class="contentBox" v-if="list.length" @click="toEmit()"
:style="'color:' + color + ';background-color:' + backgroundColor + ';height:' + height+'rpx;'">
<view v-if="showIcon" class="supBox">
<lwIcon :size="32" :color="iconColor" icon="sound"></lwIcon>
</view>
<view v-if="list.length > 1" class="content">
<view v-for="(item, index) in list" :key="index" @tap.stop="dangGao(index)">
<view class="loopItemBase" :class="index==0&&firstIn?'fistInClass':''"
:animation="realAnimation(index)" v-if="aindexArr.includes(index)"
:style="'line-height:'+height+'rpx;'">
{{ item }}
</view>
</view>
</view>
<view v-if="list.length == 1" class="content">
<view :style="'line-height:'+height+'rpx;'" @tap.stop="dangGao(0)" class="loopItemBaseShow">{{ list[0] }}</view>
</view>
<view v-if="showMore" class="offBox">
<lwIcon :size="32" :color="moreColor" icon="arrowright"></lwIcon>
</view>
</view>
</view>
</template>
<script>
/*
lw-notice公告上下轮询组件组件内依赖了自有的字体图标组件可自行替换为uni或自身项目的图标组件
color:字体颜色
backgroundColor:背景色
list:要循环的列表数据
height:组件高度
showScale:是否有缩放动画
runTime:间隔切换时间
showIcon:是否显示头部小喇叭
iconColor:小喇叭的颜色
showMore:是否显示尾部更多
moreColor:显示更多的颜色
*/
import lwIcon from './iconFont.vue'
export default {
components: {
lwIcon
},
props: {
color: {
type: String,
default: '#666666'
},
backgroundColor: {
type: String,
default: '#f5f5f5'
},
list: {
type: Array,
default: function(){
return []
}
},
height: {
type: Number,
default: 80
},
showScale: {
type: Boolean,
default: false
},
runTime: {
type: Number,
default: 4000
},
showIcon: {
type: Boolean,
default: false
},
showMore: {
type: Boolean,
default: false
},
iconColor: {
type: String,
default: '#aaaaaa'
},
moreColor: {
type: String,
default: '#aaaaaa'
}
},
data() {
return {
// 第一次展示
firstIn: true,
// 当前显示的项
aindexArr: [],
// 创建动画的实例
animation: null,
// 动画对象一
animationData: null,
// 动画对象二
animationDataTwo: null,
// 显示项和动画之间的映射关系
indexLinkAnimationObj: {},
setTimerOne: null,
setTimerTwo: null,
setTimerThree: null,
setTimerFour: null,
setTimerFive: null
};
},
beforeDestroy() {
this.resetPage()
},
computed: {
// 计算展示项应该展示的动画
realAnimation() {
return function(value) {
if (this.indexLinkAnimationObj[value]) {
return this[this.indexLinkAnimationObj[value]]
} else {
return {}
}
}
}
},
methods: {
// 开始 按3000毫秒的运行示例图
// 1.a显示 执行动画1 锁定动画1 0ms
// 2.b显示 执行动画2 锁定动画2 200ms
// 3.a隐藏 停止动画1 释放动画1 300ms
// 4.c显示 执行动画1 锁定动画1 400ms
// 5.b隐藏 停止动画2 释放动画2 500ms
// 6.a显示 执行动画2 锁定动画2 600ms
// 7.c隐藏 停止动画1 释放动画1 700ms
// 8.b显示 执行动画1 锁定动画1 800ms
// 9.a隐藏 停止动画2 释放动画2 900ms
// 10.c显示 执行动画2 锁定动画2 1000ms
initPage() {
this.resetPage();
if (this.list && this.list.length) {
if (this.list.length > 1) {
this.aindexArr.push(0);
this.animation = uni.createAnimation({
timingFunction: 'linear',
})
// #ifdef H5
this.animationDataH5 = this.animation.translateY(-100).step({
duration: 10000
}).export()
// #endif
this.runAnimation(0, true);
}
}
},
// 重置页面动画
resetPage() {
// 移除所有定时器
clearTimeout(this.setTimerOne);
clearTimeout(this.setTimerTwo);
clearTimeout(this.setTimerThree);
clearTimeout(this.setTimerFour);
clearTimeout(this.setTimerFive);
// 重置页面属性
this.aindexArr = [];
this.animation = null;
this.animationData = null;
this.animationDataTwo = null;
this.indexLinkAnimationObj = {};
},
// 执行动画方法(此方法内不要清除赋值的定时器)
runAnimation(value, firstIn) {
let that = this;
if (!firstIn) {
that.aindexArr.push(value);
}
// 获取执行动画对象
let lockText = that.createAni(firstIn);
// 延迟50毫秒执行(等待dom渲染)
that.setTimerOne = setTimeout(() => {
// 创建执行动画和执行方之间的映射关系
that.indexLinkAnimationObj[value] = lockText;
// console.log('已经创建完成绑定关系')
// console.log(that.indexLinkAnimationObj)
// 获取基础执行时间单位
let unitRunTime = (that.runTime - 50) / 6;
let waitTime = firstIn ? unitRunTime * 4 : unitRunTime * 5;
let waitTimeTwo = firstIn ? (that.runTime - unitRunTime) : that.runTime;
// #ifdef H5
waitTimeTwo = firstIn ? (that.runTime - (1.5 * unitRunTime)) : that.runTime;
//H5重新刷新一下动画绑定关系
if (firstIn) {
that.aindexArr.splice(0, 1);
that.aindexArr.push(0);
}
// #endif
// 开启下一个动画
that.setTimerTwo = setTimeout(() => {
let Index = value == that.list.length - 1 ? 0 : value + 1;
that.runAnimation(Index)
}, waitTime)
// 释放上一个执行方
that.setTimerThree = setTimeout(() => {
let index = that.aindexArr.indexOf(value);
that.aindexArr.splice(index, 1)
that.firstIn = false;
delete that.indexLinkAnimationObj[value]
}, waitTimeTwo)
}, 50)
},
// 创建动画方法
createAni(firstIn) {
let that = this;
let unitRunTime = (that.runTime - 50) / 6;
let delayTime = unitRunTime * 4;
let durationTime = unitRunTime;
let dispairTime = unitRunTime;
// #ifdef H5
delayTime = unitRunTime * 3.5;
dispairTime = unitRunTime * 1.5;
// #endif
let showTransformHeight = -uni.upx2px(that.height);
let hideTransformHeight = showTransformHeight * 2;
// 创建动画
if (that.showScale) {
if (firstIn) {
// that.animation.translateY(1).scale(1,1).step({ duration: 5 });
that.animation.translateY(showTransformHeight).scale(0.5, 0.5).step({
delay: delayTime,
duration: dispairTime
});
} else {
that.animation.translateY(showTransformHeight).scale(1, 1).step({
duration: durationTime
});
that.animation.translateY(hideTransformHeight).scale(0.5, 0.5).step({
delay: delayTime,
duration: dispairTime
});
}
} else {
if (firstIn) {
// that.animation.translateY(1).step({ duration: 5 });
that.animation.translateY(showTransformHeight).step({
delay: delayTime,
duration: dispairTime
});
} else {
that.animation.translateY(showTransformHeight).step({
duration: durationTime
});
that.animation.translateY(hideTransformHeight).step({
delay: delayTime,
duration: dispairTime
});
}
}
// 判断动画赋值项并赋值
if (!that.animationData) {
that.animationData = that.animation.export()
that.setTimerFour = setTimeout(() => {
clearTimeout(that.setTimerFour)
that.animationData = false;
}, that.runTime)
return 'animationData'
} else {
that.animationDataTwo = that.animation.export()
that.setTimerFive = setTimeout(() => {
clearTimeout(that.setTimerFive)
that.animationDataTwo = false;
}, that.runTime)
return 'animationDataTwo'
}
},
// 抛出点击事件
toEmit() {
let that = this
if (that.list.length == 1) {
that.$emit('itemClick', that.list[0])
} else {
that.$emit('itemClick', that.list[that.aindexArr[0]])
}
},
dangGao(index){
let that = this
if (that.list.length != 0) {
that.$emit('dangGao', index)
}
}
},
created() {
},
mounted() {
// 判断list有值后开启动画
// setTimeout()
this.initPage()
},
watch: {
list(value) {
this.initPage()
}
}
};
</script>
<style lang="scss" scoped>
.contentBox {
width: 100%;
display: flex;
// padding: 0 20rpx;
align-items: center;
box-sizing: border-box;
font-size: 24rpx;
.supBox {
width: 50rpx;
display: flex;
justify-content: flex-start;
}
.offBox {
width: 50rpx;
display: flex;
justify-content: flex-end;
}
.content {
width: 100%;
flex-grow: 1;
height: 100%;
display: flex;
overflow: hidden;
position: relative;
align-items: center;
box-sizing: border-box;
justify-content: center;
.loopItemBase {
left: 0;
top: 100%;
width: 100%;
height: 100%;
overflow: hidden;
font-size: 28rpx;
text-align: left;
position: absolute;
white-space: nowrap;
align-items: center;
text-overflow: ellipsis;
&.fistInClass {
top: 0;
}
}
.loopItemBaseShow {
top: 0;
left: 0;
width: 100%;
height: 100%;
overflow: hidden;
font-size: 28rpx;
text-align: left;
position: absolute;
white-space: nowrap;
align-items: center;
text-overflow: ellipsis;
}
}
}
</style>