shoot-miniprograms/src/components/Timer.vue

<script setup>
import { ref, watch } from "vue";
const props = defineProps({
  seq: {
    type: Number,
    default: 0,
  },
  countdown: {
    type: Number,
    default: 15,
  },
  callBack: {
    type: Function,
    default: () => {},
  },
});
const show = ref(false);
const count = ref(0);
const timer = ref(null);
watch(
  () => props.seq,
  () => {
    if (props.seq > 0) {
      if (show.value) return;
      if (timer.value) clearInterval(timer.value);
      count.value = props.countdown;
      show.value = true;
      timer.value = setInterval(() => {
        if (count.value === 0) {
          show.value = false;
          clearInterval(timer.value);
          props.callBack();
        } else {
          count.value -= 1;
        }
      }, 1000);
    } else {
      if (timer.value) clearInterval(timer.value);
      show.value = false;
    }
  },
  {
    immediate: true,
  }
);
</script>

<template>
  <view
    class="container"
    :style="{ transform: `translateX(${show ? '0' : '100'}%)` }"
  >
    <view>距离正式比赛</view>
    <view>
      <text>开始还有</text>
      <text>{{ count }}</text>
      <text>秒</text>
    </view>
  </view>
</template>

<style scoped>
.container {
  transform: translateX(100%);
  position: fixed;
  bottom: 20%;
  right: 0;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  color: #fff9;
  font-size: 14px;
  padding: 10px;
  background-color: #00000066;
  border-top-left-radius: 10px;
  border-bottom-left-radius: 10px;
}
.container > view {
  display: flex;
  align-items: center;
}
.container > view:last-child > text:nth-child(2) {
  color: #fed847;
  font-size: 16px;
  width: 16px;
  text-align: center;
}
</style>