1 files changed, 77 insertions, 0 deletions
diff --git a/packages/frontend/src/components/MkDigitalClock.vue b/packages/frontend/src/components/MkDigitalClock.vue
new file mode 100644
index 0000000000..9ed8d63d19
--- /dev/null
+++ b/packages/frontend/src/components/MkDigitalClock.vue
@@ -0,0 +1,77 @@
+<template>
+<span class="zjobosdg">
+	<span v-text="hh"></span>
+	<span class="colon" :class="{ showColon }">:</span>
+	<span v-text="mm"></span>
+	<span v-if="showS" class="colon" :class="{ showColon }">:</span>
+	<span v-if="showS" v-text="ss"></span>
+	<span v-if="showMs" class="colon" :class="{ showColon }">:</span>
+	<span v-if="showMs" v-text="ms"></span>
+</span>
+</template>
+
+<script lang="ts" setup>
+import { onUnmounted, ref, watch } from 'vue';
+
+const props = withDefaults(defineProps<{
+	showS?: boolean;
+	showMs?: boolean;
+	offset?: number;
+}>(), {
+	showS: true,
+	showMs: false,
+	offset: 0 - new Date().getTimezoneOffset(),
+});
+
+let intervalId;
+const hh = ref('');
+const mm = ref('');
+const ss = ref('');
+const ms = ref('');
+const showColon = ref(false);
+let prevSec: number | null = null;
+
+watch(showColon, (v) => {
+	if (v) {
+		window.setTimeout(() => {
+			showColon.value = false;
+		}, 30);
+	}
+});
+
+const tick = () => {
+	const now = new Date();
+	now.setMinutes(now.getMinutes() + (new Date().getTimezoneOffset() + props.offset));
+	hh.value = now.getHours().toString().padStart(2, '0');
+	mm.value = now.getMinutes().toString().padStart(2, '0');
+	ss.value = now.getSeconds().toString().padStart(2, '0');
+	ms.value = Math.floor(now.getMilliseconds() / 10).toString().padStart(2, '0');
+	if (now.getSeconds() !== prevSec) showColon.value = true;
+	prevSec = now.getSeconds();
+};
+
+tick();
+
+watch(() => props.showMs, () => {
+	if (intervalId) window.clearInterval(intervalId);
+	intervalId = window.setInterval(tick, props.showMs ? 10 : 1000);
+}, { immediate: true });
+
+onUnmounted(() => {
+	window.clearInterval(intervalId);
+});
+</script>
+
+<style lang="scss" scoped>
+.zjobosdg {
+	> .colon {
+		opacity: 0;
+		transition: opacity 1s ease;
+
+		&.showColon {
+			opacity: 1;
+			transition: opacity 0s;
+		}
+	}
+}
+</style>