usky-web-mobile/src/pages/business/ems/survey/components/historyChart.vue

<template>
  <view class="chart-panel bg-white radius" :class="{ 'chart-panel--fullscreen': fullscreen }">
    <l-echart ref="chartRef" class="chart-panel__echart" :class="{ 'chart-panel__echart--fullscreen': fullscreen }"></l-echart>
  </view>
</template>

<script setup>
import * as echarts from "echarts";
import { ref, watch, nextTick } from "vue";

const CHART_COLORS = ["#4a90e2", "#40b883", "#f5a623", "#ef4444", "#9b59b6", "#1abc9c"];

const props = defineProps({
  metricName: {
    type: String,
    default: "",
  },
  chartData: {
    type: Array,
    default: () => [],
  },
  seriesList: {
    type: Array,
    default: () => [],
  },
  fullscreen: {
    type: Boolean,
    default: false,
  },
});

const chartRef = ref(null);
let chartInstance;

function getSeriesList() {
  if (props.seriesList.length) return props.seriesList;
  if (props.chartData.length) {
    return [{ name: props.metricName || "暂无数据", data: props.chartData }];
  }
  return [];
}

function buildOption() {
  const seriesList = getSeriesList();
  if (!seriesList.length) {
    return {
      title: {
        text: "暂无数据",
        left: "center",
        top: "center",
        textStyle: { color: "#999", fontSize: 14, fontWeight: "normal" },
      },
    };
  }

  const labelOrder = [];
  const labelSeen = new Set();
  seriesList.forEach((series) => {
    (series.data || []).forEach((point) => {
      if (!labelSeen.has(point.label)) {
        labelSeen.add(point.label);
        labelOrder.push({
          label: point.label,
          timestamp: point.timestamp || 0,
        });
      }
    });
  });
  labelOrder.sort((a, b) => a.timestamp - b.timestamp);
  const xData = labelOrder.map((item) => item.label);

  const lineSeries = seriesList.map((series, index) => ({
    name: series.name,
    type: "line",
    smooth: true,
    symbol: "circle",
    symbolSize: 4,
    connectNulls: true,
    data: xData.map((label) => {
      const point = (series.data || []).find((item) => item.label === label);
      return point ? point.value : null;
    }),
    itemStyle: {
      color: CHART_COLORS[index % CHART_COLORS.length],
    },
  }));

  return {
    color: CHART_COLORS,
    tooltip: {
      trigger: "axis",
      backgroundColor: "rgba(255, 255, 255, 0.9)",
      borderColor: "rgba(0, 0, 0, 0.08)",
    },
    legend: {
      type: "scroll",
      top: 10,
      left: "center",
      data: seriesList.map((item) => item.name),
      icon: "circle",
      itemWidth: 8,
      itemHeight: 8,
      textStyle: {
        fontSize: 12,
        color: "#666",
      },
    },
    grid: {
      left: props.fullscreen ? "8%" : "12%",
      right: props.fullscreen ? "8%" : "12%",
      top: props.fullscreen ? 48 : 56,
      bottom: props.fullscreen ? 36 : 60,
    },
    dataZoom: [
      {
        type: "slider",
        show: xData.length > 4,
        xAxisIndex: 0,
        height: 18,
        bottom: 10,
        borderColor: "transparent",
        backgroundColor: "#f5f6f7",
        fillerColor: "rgba(74, 144, 226, 0.15)",
        handleSize: "80%",
      },
    ],
    xAxis: {
      type: "category",
      boundaryGap: false,
      data: xData,
      axisLine: {
        lineStyle: { color: "#e5e5e5" },
      },
      axisLabel: {
        color: "#999",
        fontSize: 11,
      },
    },
    yAxis: {
      type: "value",
      splitLine: {
        lineStyle: {
          type: "dashed",
          color: "#eee",
        },
      },
      axisLabel: {
        color: "#999",
        fontSize: 11,
      },
    },
    series: lineSeries,
  };
}

function resizeChart(instance) {
  if (!instance) return;
  setTimeout(() => instance.resize(), 80);
  setTimeout(() => instance.resize(), 300);
}

function renderChart() {
  nextTick(() => {
    if (!chartRef.value) return;
    chartRef.value.init(echarts, (instance) => {
      chartInstance = instance;
      instance.setOption(buildOption(), true);
      if (props.fullscreen) {
        resizeChart(instance);
      }
    });
  });
}

watch(
  () => [props.metricName, props.chartData, props.seriesList, props.fullscreen],
  () => {
    renderChart();
  },
  { deep: true, immediate: true }
);
</script>

<style lang="scss" scoped>
.chart-panel {
  padding: 10px 0 0;

  &--fullscreen {
    flex: 1;
    width: 100%;
    height: 100%;
    padding: 0;
    border-radius: 0;
    display: flex;
    flex-direction: column;
    box-sizing: border-box;

    :deep(.lime-echart),
    :deep(.lime-echart__canvas) {
      width: 100% !important;
      height: 100% !important;
    }
  }

  &__echart {
    width: 100%;
    height: 520rpx;

    &--fullscreen {
      flex: 1;
      width: 100%;
      height: 100% !important;
      min-height: 0;
    }
  }
}
</style>