video-mask.nvue
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<template>
<div class="wrapper">
<list class="list">
<cell v-for="(item, index) in lists" :key="index" :ref="'item' + index" class="cell">
<text class="name">{{item.name}}:</text>
<text class="content">{{item.content}}</text>
</cell>
</list>
</div>
</template>
<script>
export default {
data() {
return {
lists: [],
interval: null,
yourTexts: [
{
name: '学员A',
content: '老师讲的真好',
}, {
name: '学员B',
content: 'uni-app值得学习',
}, {
name: '学员C',
content: '老师，还有实战例子吗？',
}, {
name: '学员D',
content: '老师，请问是不是要先学会vue才能学uni-app？',
}, {
name: '学员E',
content: '受教了，uni-app太牛了',
}
],
}
},
created() {
const vm = this;
uni.$on('play-video', (data) => {
if(data.status === 'open'){
this.addItem();
}else{
this.closeItem();
}
})
},
beforeDestroy(){
uni.$off('play-video')
this.closeItem()
},
methods: {
addItem() {
const vm = this;
vm.lists = [{
name: '学员E',
content: '受教了，uni-app太牛了',
}];
const dom = weex.requireModule('dom')
vm.interval = setInterval(() => {
if(vm.lists.length > 15) {
vm.lists.unshift();
}
vm.lists.push({
name: vm.yourTexts[vm.lists.length%4].name,
content: vm.yourTexts[vm.lists.length%4].content
});
if(vm.lists.length > 5) {
vm.$nextTick(() => {
if(vm.$refs['item' + (vm.lists.length - 1)]){
dom.scrollToElement(vm.$refs['item' + (vm.lists.length - 1)][0]);
}
});
}
}, 3500);
},
closeItem() {
if(this.interval) clearInterval(this.interval);
}
}
}
</script>
<style>
.wrapper {
position: relative;
flex: 1;
background-color: transparent;
}
.list {
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
background-color: rgba(0, 0, 0, 0.7);
}
.cell {
padding: 10rpx 0;
flex-direction: row;
flex-wrap: nowrap;
}
.name {
flex: 0;
font-size: 20rpx;
margin-right: 20rpx;
color: #FF5A5F;
}
.content {
flex: 1;
font-size: 20rpx;
color: #F4F5F6;
}
</style>