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<template>
<div>
<c-card>
<div class="duration">{{ formatMs(counter) }}</div>
</c-card>
<n-space justify="center" mt-5>
<c-button v-if="!isRunning" secondary type="primary" @click="resume">Start</c-button>
<c-button v-else secondary type="warning" @click="pause">Stop</c-button>
<c-button @click="counter = 0">Reset</c-button>
</n-space>
</div>
</template>
<script setup lang="ts">
import { useRafFn } from '@vueuse/core';
import { ref } from 'vue';
import { formatMs } from './chronometer.service';
const isRunning = ref(false);
const counter = ref(0);
let previousRafDate = Date.now();
const { pause: pauseRaf, resume: resumeRaf } = useRafFn(
() => {
const deltaMs = Date.now() - previousRafDate;
previousRafDate = Date.now();
counter.value += deltaMs;
},
{ immediate: false },
);
function resume() {
previousRafDate = Date.now();
resumeRaf();
isRunning.value = true;
}
function pause() {
pauseRaf();
isRunning.value = false;
}
</script>
<style lang="less" scoped>
.duration {
text-align: center;
font-size: 40px;
font-family: monospace;
margin: 20px 0;
}
</style>
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