<template>
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<div class="timeline-container">
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<div class="controls">
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<div class="control-btn" @click="skipBackward">
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<img src="@/assets/img/timeline/left.png" class="fas fa-step-backward" />
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</div>
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<div class="control-btn play-btn" @click="togglePlay">
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<img v-show="isPlaying" src="@/assets/img/timeline/stop.png" />
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<img v-show="!isPlaying" src="@/assets/img/timeline/start.png" />
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</div>
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<div class="control-btn" @click="skipForward">
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<img src="@/assets/img/timeline/right.png" class="fas fa-step-forward" />
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</div>
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<div class="speed-control">
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<div @click="toggleSpeedMenu">{{ playbackRate }}X</div>
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<div class="speed-menu" v-show="showSpeedMenu">
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<div v-for="rate in playbackRates" :key="rate" @click.capture="setPlaybackRate(rate)"
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:class="{ active: playbackRate === rate }">
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{{ rate }}X
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</div>
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</div>
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</div>
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</div>
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<div class="timeline">
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<div class="dates">
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<div class="current-date">
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当前播放时间：{{ currentPlayingTime }}
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</div>
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<div v-for="(date, index) in visibleDates" :key="index" class="date-label">
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<!-- {{ formatDate(date) }} -->
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</div>
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</div>
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<div class="timeline-track" ref="timelineTrack" @click="seekToPosition">
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<div class="timeline-progress" :style="{ width: progressPercentage + '%' }"></div>
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<div class="timeline-cursor" :style="{ left: progressPercentage + '%' }"></div>
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<div class="time-markers">
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<div v-for="(time, index) in timeMarkers" :key="index" class="time-marker">
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{{ time }}
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</div>
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</div>
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</div>
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</div>
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<el-button @click="handleBack" style="margin-top: 26px;margin-left: 30px;margin-right: 10px;">结束模拟</el-button>
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</div>
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</template>
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<script setup>
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import {
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ref,
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computed,
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onMounted,
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watch,
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defineProps,
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onBeforeUnmount,
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inject,
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} from "vue";
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import dayjs from "dayjs";
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import { createWaterPrimitive, destoryWaterPrimitive } from "@/utils/water";
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import { fetchWaterSimulationData } from "@/api/trApi.js";
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import { EventBus } from "@/eventBus";
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import { ElMessage } from 'element-plus';
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const emit = defineEmits(["timeUpdate", "isPlaying", "playbackFinished"]);
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// 定义props
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const props = defineProps({
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waterSimulateParams: {
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type: Object,
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default: () => ({
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date: ["2025-02-14T16:00:00.000Z", "2025-02-15T16:00:00.000Z"],
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}),
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},
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});
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// 响应式状态
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const currentPlayingTime = ref(""); // 当前播放时间
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const isPlaying = ref(false);
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const playbackFinished = ref(true);
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const currentTime = ref(0);
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const duration = ref(60); // 一天的秒数
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const playbackRate = ref(8);
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const playbackRates = ref([1, 2, 4, 8]);
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const showSpeedMenu = ref(false);
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const waterTimestamps = ref([]); // 存储时间轴数据
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const timeMarkers = ref([]);
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const timelineTrack = ref(null);
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let playInterval = null;
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// 计算属性
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const startDate = computed(() => dayjs(props.waterSimulateParams.date[0]));
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const endDate = computed(() => dayjs(props.waterSimulateParams.date[1]));
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const progressPercentage = computed(() => (currentTime.value / duration.value) * 100);
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const visibleDates = computed(() =>
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Array.from(
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new Set(waterTimestamps.value.map((ts) => dayjs(ts).format("YYYY-MM-DD")))
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).map((date) => dayjs(date).toDate())
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);
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const currentTimeFormatted = computed(() => formatTime(currentTime.value));
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// 播放控制
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const togglePlay = () => {
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// 如果当前是停止状态且已经播放完毕，点击时重置时间
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if (!isPlaying.value && currentTime.value >= duration.value) currentTime.value = 0;
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isPlaying.value = !isPlaying.value;
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emit("isPlaying", isPlaying.value);
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if (isPlaying.value) {
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startPlayback();
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// 如果是从头开始播放
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if (currentTime.value === 0) emit("playbackFinished", false);
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} else stopPlayback();
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};
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const intervalMap = {
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1: 1000, // 1倍速
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2: 500, // 2倍速
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4: 250, // 4倍速
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8: 125, // 8倍速
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};
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const startPlayback = () => {
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// 根据当前倍速获取对应的 interval
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const interval = intervalMap[playbackRate.value] || 1000; // 默认为1000
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// 调用 createWaterPrimitive 并传递 interval
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createWaterPrimitive({ interval });
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clearInterval(playInterval);
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playInterval = setInterval(() => {
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// 计算每次增加的时间量
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const timeIncrement = playbackRate.value; // 倍速直接作为增量
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currentTime.value += timeIncrement;
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// 如果超过总时长，则停止播放
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if (currentTime.value >= duration.value) {
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currentTime.value = duration.value; // 停在最后一帧
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stopPlayback();
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isPlaying.value = false;
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emit("isPlaying", false);
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emit("playbackFinished", true);
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}
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// 触发时间更新事件
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emit("timeUpdate", progressPercentage.value);
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}, 1000); // 每秒更新一次
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};
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const stopPlayback = () => clearInterval(playInterval);
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const skipForward = () => (currentTime.value = Math.min(currentTime.value + 1, duration.value)); // 向前跳转1秒
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const skipBackward = () => (currentTime.value = Math.max(currentTime.value - 1, 0)); // 向后跳转1秒
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const toggleSpeedMenu = () => (showSpeedMenu.value = !showSpeedMenu.value);
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const setPlaybackRate = (rate) => {
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playbackRate.value = rate;
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showSpeedMenu.value = false;
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if (isPlaying.value) stopPlayback(), startPlayback(); // 如果正在播放，则重新启动以应用新的速率
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};
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const seekToPosition = (event) => {
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const rect = timelineTrack.value.getBoundingClientRect();
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const percentage = (event.clientX - rect.left) / rect.width;
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currentTime.value = Math.round(percentage * duration.value);
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emit("timeUpdate", progressPercentage.value);
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if (waterTimestamps.value.length > 0) {
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const clickedTimestamp = dayjs(waterTimestamps.value[0]).add(currentTime.value, "second");
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console.log("Clicked timestamp:", clickedTimestamp.valueOf(), clickedTimestamp.format("YYYY-MM-DD HH:mm:ss"));
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}
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};
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watch(() => currentTime.value, () => {
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if (waterTimestamps.value.length > 0) {
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currentPlayingTime.value = dayjs(waterTimestamps.value[0])
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.add(currentTime.value, "second")
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.format("YYYY-MM-DD mm:ss");
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}
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});
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// 时间标记生成
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function generateTimeMarkers(timestamps) {
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if (!timestamps || timestamps.length === 0) return [];
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const sorted = [...timestamps].sort((a, b) => dayjs(a).diff(dayjs(b)));
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const interval = Math.floor(dayjs(sorted.at(-1)).diff(dayjs(sorted[0]), "second") / 7);
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return Array.from({ length: 8 }, (_, i) => dayjs(sorted[0]).add(i * interval, "second").format("mm:ss"));
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}
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watch(() => waterTimestamps.value, (newTimestamps) => {
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if (newTimestamps.length > 0) timeMarkers.value = generateTimeMarkers(newTimestamps);
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}, { immediate: true });
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onMounted(async () => {
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try {
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const { waterTimestamps: timestamps } = await fetchWaterSimulationData();
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if (timestamps) {
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waterTimestamps.value = timestamps;
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updateTimelineRange();
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timeMarkers.value = generateTimeMarkers(timestamps);
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currentPlayingTime.value = dayjs(timestamps[0]).format("YYYY-MM-DD HH:mm:ss");
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}
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} catch (error) {
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console.error("Error loading water simulation data:", error);
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}
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});
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function updateTimelineRange() {
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if (waterTimestamps.value.length > 0) {
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const [first, last] = [waterTimestamps.value[0], waterTimestamps.value.at(-1)];
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props.waterSimulateParams.date = [dayjs(first).toISOString(), dayjs(last).toISOString()];
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duration.value = dayjs(last).diff(dayjs(first), "second");
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console.log("Updated timeline range:", { ...props.waterSimulateParams, duration: duration.value });
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}
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}
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onBeforeUnmount(() => {
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stopPlayback();
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destoryWaterPrimitive();
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});
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const { endSimulate } = inject("simulateActions");
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function handleBack() {
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ElMessage({ message: '模拟进程正在关闭中...', type: 'success' }); // 显示消息通知用户模拟进程正在关闭
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endSimulate();
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destoryWaterPrimitive();
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EventBus.emit("hide-schemeInfo");
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}
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</script>
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<style scoped>
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.timeline-container {
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display: flex;
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/* align-items: center; */
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justify-content: space-between;
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position: absolute;
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bottom: 10%;
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left: 50%;
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transform: translateX(-50%);
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z-index: 99;
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width: 878px;
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height: 108px;
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/* background-color: #1a2634; */
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background: url("@/assets/img/menubar/bar.png");
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background-size: 100% 100%;
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color: white;
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/* border-radius: 8px; */
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font-family: Arial, sans-serif;
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padding: 0 25px;
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}
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.controls {
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display: flex;
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/* align-items: center; */
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margin: 25px 25px 10px 0;
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}
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.control-btn {
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background: none;
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border: none;
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color: white;
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font-size: 16px;
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cursor: pointer;
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margin-right: 10px;
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width: 30px;
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height: 30px;
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display: flex;
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align-items: center;
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justify-content: center;
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border-radius: 50%;
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img {
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width: 100%;
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height: 100%;
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}
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}
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.control-btn:hover {
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background-color: rgba(255, 255, 255, 0.1);
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}
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.play-btn {
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background-color: #4a90e2;
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width: 36px;
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height: 36px;
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}
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.speed-control {
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position: relative;
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cursor: pointer;
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/* padding: 5px 10px; */
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border-radius: 4px;
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background-color: rgba(255, 255, 255, 0.1);
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width: 36px;
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height: 36px;
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line-height: 36px;
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text-align: center;
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}
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.speed-menu {
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position: absolute;
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top: 100%;
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left: 0;
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background-color: #2a3a4a;
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border-radius: 4px;
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z-index: 10;
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width: 60px;
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}
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.speed-menu div {
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/* padding: 5px 5px; */
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text-align: center;
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}
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.speed-menu div:hover,
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.speed-menu div.active {
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/* background-color: #4a90e2; */
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background-color: rgba(127, 255, 212, 0.5);
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}
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.timeline {
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margin-top: 10px;
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position: relative;
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flex: 1;
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}
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.dates {
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display: flex;
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justify-content: space-between;
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margin-bottom: 5px;
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}
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.date-label {
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font-size: 14px;
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color: #fff;
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}
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.timeline-track {
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height: 8px;
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background-color: rgba(255, 255, 255, 0.1);
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border-radius: 4px;
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position: relative;
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cursor: pointer;
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}
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.timeline-progress {
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height: 100%;
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background-color: #4a90e2;
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border-radius: 4px;
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position: absolute;
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top: 0;
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left: 0;
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}
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.timeline-cursor {
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width: 12px;
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height: 12px;
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background-color: white;
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border-radius: 50%;
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position: absolute;
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top: 50%;
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transform: translate(-50%, -50%);
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z-index: 2;
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}
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.time-markers {
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display: flex;
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justify-content: space-between;
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position: absolute;
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width: 100%;
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top: 15px;
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color: #fff;
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}
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.time-marker {
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margin-top: 5px;
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font-size: 12px;
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color: #fff;
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transform: translateX(-20%);
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}
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.current-date {
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margin-bottom: 5px;
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font-size: 15px;
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color: #fff;
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transform: translateX(-3%);
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}
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</style>
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