SocialNetworks_duan/src/views/LinkPrediction/components/detailNode.vue

<template>
  <div class="detailNode-component">
    <img src="@/assets/images/icon/goback.png" alt="" class="goback" @click="handleGoback" />
    <div class="graph-container" id="container"></div>
    <div class="statistic-container">
      <div
        class="statistics-item"
        v-for="item in interactionStore.statisticsDetailList"
        :key="item.id"
      >
        <img :src="item.icon" class="icon" />
        <div class="name">{{ item.name }}:&nbsp;</div>
        <div class="count">{{ item.count }}</div>
      </div>
    </div>
    <div class="time-axis">
      <div class="time">{{ TansTimestamp(startTime, "YYYY.MM.DD HH:mm:ss") }}</div>
      <div class="axis" ref="axisRef" @pointerdown="handlePointerDown">
        <div
          class="time-section"
          v-for="time in timeList"
          :key="time"
          :style="{ left: getTimeSectionLeft(time) + 5 + 'px' }"
        ></div>
        <div class="progress-bar" :style="trackStyle"></div>
        <div class="active-sign" :style="{ left: `${currentPosition}px` }">
          <div class="active-needle"></div>
          <el-tooltip
            :content="TansTimestamp(currentTime, 'YYYY.MM.DD HH:mm:ss')"
            placement="bottom"
            effect="light"
          >
            <div class="timeLine-point" @pointerdown.stop="handlePointPointerDown"></div>
          </el-tooltip>
        </div>
      </div>
      <div class="time">{{ TansTimestamp(endTime, "YYYY.MM.DD HH:mm:ss") }}</div>
    </div>
  </div>
</template>

<script setup>
import { defineEmits, onMounted, ref, onUnmounted, computed, watch, nextTick } from "vue"
import { TansTimestamp, getAvatarUrl } from "@/utils/transform"
import nodeHoverImg from "@/assets/images/nodeHover.png"
import * as echarts from "echarts"
import { storeToRefs } from "pinia"
import { useCharacterInteractionStore } from "@/store/llinkPrediction/index"

const interactionStore = useCharacterInteractionStore()
const { communityDetailNodeRelation, timeList, predictionUserIds } = storeToRefs(interactionStore)
const emit = defineEmits(["click:goback"])
const chartsData = ref({})
const handleGoback = () => {
  emit("click:goback", "CommunityNode")
}

//当点击时间轴的时候，communityDetailNodeList改变，重新更新关系图
watch(
  communityDetailNodeRelation,
  () => {
    initChart()
  },
  { deep: true }
)

//监听predictionUserIds的变化从而筛选需要高亮的预测节点
watch(
  predictionUserIds,
  (newIds) => {
    if (newIds.length != 0) {
      nextTick(() => {
        highLightUserNodes(newIds)
      })
    }
  },
  { deep: true, immediate: true }
)

// 时间轴相关数据
const startTime = ref(new Date("2024-05-16 16:56:04"))
const endTime = ref(new Date("2024-05-23 10:16:56"))
const currentTime = ref(new Date("2024-05-16 16:56:04")) // 当前选中的时间
const currentPosition = ref(0) // 初始位置（轴长度的一半）
const axisRef = ref(null)
const isDragging = ref(false)

// 缓存时间计算相关的常量
const axisWidth = 426
const startTimeMs = startTime.value.getTime()
const endTimeMs = endTime.value.getTime()
const totalDuration = endTimeMs - startTimeMs

//点击用户组列表后，显示这两个用户的交互时间切片，获得每一个时间距离时间轴初始位置的距离
const getTimeSectionLeft = computed(() => {
  return (time) => {
    const total = endTime.value.getTime() - startTime.value.getTime()
    const offset = new Date(time).getTime() - startTime.value.getTime()
    return Math.max(0, Math.min(426, (offset / total) * 426))
  }
})

// 根据位置计算时间
const getTimeFromPosition = (position) => {
  const ratio = Math.max(0, Math.min(1, position / axisWidth))
  const timeOffset = totalDuration * ratio
  return new Date(startTimeMs + timeOffset)
}

// 指针按下事件
const handlePointerDown = (e) => {
  if (e.target.classList.contains("timeLine-point")) return
  const rect = axisRef.value.getBoundingClientRect()
  const position = Math.max(0, Math.min(axisWidth, e.clientX - rect.left))

  // 直接更新位置，不使用节流函数
  currentPosition.value = position
  currentTime.value = getTimeFromPosition(position)

  // 点击后输出当前时间
  const currentTimes = TansTimestamp(currentTime.value, "YYYY-MM-DD HH:mm:ss")
  interactionStore.initGraphCommunityDetailNode(interactionStore.curSelecedGroupIds, currentTimes)
}

// 时间点指针按下事件
const handlePointPointerDown = (e) => {
  e.stopPropagation()
  e.preventDefault()
  isDragging.value = true
  // 缓存轴的边界矩形，避免重复计算
  const rect = axisRef.value.getBoundingClientRect()
  const axisLeft = rect.left

  const handlePointerMove = (e) => {
    if (!isDragging.value) return
    const position = Math.max(0, Math.min(axisWidth, e.clientX - axisLeft))

    // 直接更新位置，不检查阈值，确保实时响应
    currentPosition.value = position
    currentTime.value = getTimeFromPosition(position)
  }

  const handlePointerUp = () => {
    isDragging.value = false
    // 拖动结束时输出当前时间
    const currentTimes = TansTimestamp(currentTime.value, "YYYY-MM-DD HH:mm:ss")
    interactionStore.initGraphCommunityDetailNode(interactionStore.curSelecedGroupIds, currentTimes)

    document.removeEventListener("pointermove", handlePointerMove)
    document.removeEventListener("pointerup", handlePointerUp)
  }

  document.addEventListener("pointermove", handlePointerMove, { passive: true })
  document.addEventListener("pointerup", handlePointerUp)
}

const trackStyle = computed(() => {
  const progressPercent = Math.min(100, (currentPosition.value / 426) * 100)
  return {
    background: `linear-gradient(90deg, #00F3FF 0%, #00F3FF ${progressPercent}%, #3B7699 ${progressPercent}%, #3B7699 100%)`,
    width: "100%"
  }
})

// 组件卸载时清理事件监听器
onUnmounted(() => {
  document.removeEventListener("pointermove", () => {})
  document.removeEventListener("pointerup", () => {})
})

let chart = null

const initChart = async () => {
  chart = echarts.init(document.getElementById("container"))

  const links = []
  let nodes = []
  const edgeWidth = (interactionTime) => {
    if (interactionTime > 3) return 4
    else if (interactionTime > 10) return 6
    else if (interactionTime > 20) return 8
    else if (interactionTime > 30) return 10
    else return 1
  }
  if (!Object.keys(interactionStore.communityDetailNodeRelation).length) return

  //先处理节点
  nodes = interactionStore.communityDetailNodeList.map((item) => ({
    id: item.userId,
    name: item.userName,
    symbolSize: 40,
    postNum: item.postNum,
    fancy: item.fans
  }))

  Object.entries(interactionStore.communityDetailNodeRelation).forEach(([parentId, children]) => {
    children.forEach((child) => {
      links.push({
        source: parentId,
        target: child.id,
        edge: child.isHidden ? 1 : 0,
        interactionTimes: child.interactionTime,
        lineStyle: {
          width: child.isHidden ? 4 : edgeWidth(child.interactionTime),
          color: child.isHidden ? "#f8bf38" : "#37ACD7", // 无互动=灰色，有互动=黄色
          type: child.isHidden ? "dashed" : "solid" // 无互动=实线，有互动=虚线
        }
      })
    })
  })
  chartsData.value = { links, nodes }

  const categories = [
    { name: "事件活跃者", category: 0, icon: "circle" },
    {
      name: "互动关系",
      category: 1,
      icon: `image://${new URL("@/assets/images/linkPrediction/icon/interaction-icon2.png", import.meta.url)}`
    },
    {
      name: "互动隐关系",
      category: 2,
      icon: `image://${new URL("@/assets/images/linkPrediction/icon/hidden-icon.png", import.meta.url)}`
    }
  ]
  const option = {
    //图例配置
    legend: [
      {
        data: categories.map((c) => ({
          name: c.name,
          itemStyle: {
            color:
              c.category === 0
                ? new echarts.graphic.LinearGradient(1, 0, 0, 0, [
                    { offset: 1, color: "#1a3860" }, // 深蓝渐变
                    { offset: 0.5, color: "#38546b" },
                    { offset: 0, color: "#5fb3b3" }
                  ])
                : c.category === 1
                  ? new echarts.graphic.LinearGradient(1, 0, 0, 0, [
                      { offset: 0, color: "#9eec9c" }, // 绿色渐变
                      { offset: 0.37, color: "#aef295" },
                      { offset: 1, color: "#c2f989" }
                    ])
                  : new echarts.graphic.LinearGradient(1, 0, 0, 0, [
                      { offset: 0, color: "#ff9a9e" }, // 红色渐变（用于 category === 2）
                      { offset: 0.5, color: "#fad0c4" },
                      { offset: 1, color: "#fbc2eb" }
                    ])
          },
          icon: c.icon
        })),
        right: 21,
        symbolKeepAspect: false,
        bottom: 70,
        orient: "vertical",
        itemWidth: 16,
        itemHeight: 16,
        itemGap: 12,
        backgroundColor: "rgba(0,67,125,0.56)", // 半透明深蓝
        borderRadius: 8, // 圆角
        borderColor: "#c2f2ff", // 淡蓝色边框
        borderWidth: 0.3,
        padding: [12, 20, 12, 20], // 上右下左
        textStyle: {
          color: "#fff",
          fontSize: 16,
          fontWeight: "normal"
        }
      }
    ],
    //hover上去的窗口
    tooltip: {
      trigger: "item",
      backgroundColor: "rgba(0,0,0,0)", // 透明背景
      borderColor: "rgba(0,0,0,0)", // 透明边框
      borderWidth: 0,
      extraCssText: "box-shadow:none;padding:0;",
      formatter: function (params) {
        if (params.dataType === "node") {
          return `<div
                    style="
                   padding:10px 15px;
                    height: 68px;
                    border-radius: 4px;
                    background: url('${nodeHoverImg}');
                    background-size: cover;
                    background-position: center;
                    background-repeat: no-repeat;
                    display: flex;
                    align-items: center;
                    justify-content: center;
                    flex-direction: column;
                    ">
                <div style="color:#fff;letter-spacing: 0.14px;">
                    <div >用户名：${params.data.name}</div>
              </div>
            </div>`
        }
        return ""
      }
    },
    edgeLabel: {
      show: false,
      position: "middle",
      formatter: function (params) {
        return `${params.data.interactionTimes}次互动`
      },
      fontSize: 14
    },
    emphasis: {
      edgeLabel: {
        show: true,
        color: "#fff",
        fontSize: 18,
        textShadowColor: "#fff",
        textShadowBlur: 0,
        textShadowOffsetX: 0,
        textShadowOffsetY: 0
      }
    },
    series: [
      {
        type: "graph",
        layout: "force",
        animation: false,
        draggable: true,
        roam: true,
        zoom: 0.15,
        categories: categories,
        force: {
          edgeLength: 2500,
          repulsion: 4000,
          gravity: 0.1,
          friction: 0.02,
          coolingFactor: 0.1
        },

        animationDurationUpdate: 3500, // 节点移动更平滑
        data: chartsData.value.nodes.map((node) => ({
          ...node,
          itemStyle: {
            color: new echarts.graphic.RadialGradient(0.98, 0.38, 0.9, [
              { offset: 1, color: "#1a3860" }, // 最左侧
              { offset: 0.5, color: "#38546b" }, // 中间
              { offset: 0, color: "#5fb3b3" } // 最右侧
            ]),

            opacity: 1,
            borderColor: "#46C6AD",
            borderWidth: 1,
            shadowBlur: 4,
            borderType: "dashed",
            shadowColor: "rgba(19, 27, 114, 0.25)"
          },
          emphasis: {
            itemStyle: {
              shadowBlur: 20,
              shadowColor: "#c4a651",
              borderColor: "#fcd267",
              borderWidth: 5,
              borderType: "solid"
            }
          }
        })),
        links: chartsData.value.links,
        lineStyle: {
          color: "#37ACD7",
          width: 1
        }
      }
    ]
  }
  chart.setOption(option)
}

const highLightUserNodes = (userIds) => {
  if (!userIds) return
  chart.dispatchAction({
    type: "downplay",
    seriesIndex: 0
  })

  setTimeout(() => {
    //等待所有节点添加完毕后再查找
    userIds.forEach((id) => {
      const index = chartsData.value.nodes.findIndex((node) => node.id === id)
      if (index != -1) {
        chart.dispatchAction({
          type: "highlight",
          dataIndex: index
        })
      }
    })
  }, 1000)
}

onMounted(() => {
  initChart()
  highLightUserNodes()
})
</script>

<style scoped lang="less">
.detailNode-component {
  width: 100%;
  height: 100%;
  position: relative;
  .goback {
    position: absolute;
    top: -25px;
    left: 20px;
    cursor: pointer;
  }
  .graph-container {
    width: 100%;
    height: 93%;
  }
  .statistic-container {
    width: 378px;
    height: 42px;
    flex-shrink: 0;
    border-radius: 4px;
    border: 1px solid #3aa1f8;
    background: linear-gradient(270deg, rgba(0, 82, 125, 0.48) 0%, rgba(0, 200, 255, 0.23) 100%);
    backdrop-filter: blur(3px);
    position: absolute;
    bottom: 105px;
    left: 21px;
    display: flex;
    justify-content: space-between;
    .statistics-item {
      flex: 1;
      display: flex;
      align-items: center;
      justify-content: center;
      .icon {
        width: 14px;
        height: 14px;
      }
      .name {
        color: rgba(255, 255, 255, 0.76);
        text-align: center;
        font-family: OPPOSans;
        font-size: 14px;
        font-style: normal;
        font-weight: 400;
        line-height: normal;
        margin-left: 3px;
      }
      .count {
        color: #fff;
        font-family: D-DIN;
        font-size: 15px;
        font-style: normal;
        font-weight: 700;
        line-height: normal;
        margin-bottom: 2px;
      }
    }
  }
  .time-axis {
    width: 95%;
    height: 42px;
    border: 1px solid #3aa1f8;
    background: linear-gradient(270deg, rgba(0, 82, 125, 0.48) 0%, rgba(0, 200, 255, 0.23) 100%);
    backdrop-filter: blur(3px);
    position: absolute;
    left: 20px;
    bottom: 50px;
    border-radius: 4px;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0px 10px;
    color: #fff;
    touch-action: none; // 防止触摸设备上的默认行为
    .time {
      font-family: "PingFang SC";
      font-size: 16px;
      font-style: normal;
      font-weight: 400;
      line-height: normal;
    }
    .axis {
      width: 426px;
      height: 6px;
      border-radius: 20px;
      background-color: #3b7699;
      cursor: pointer;
      transform: translateZ(0); // 启用硬件加速
      position: relative;
      .time-section {
        position: absolute;
        top: -8px;
        width: 4px;
        height: 22px;
        background: #ffe066;
        border-radius: 3px;
        z-index: 3;
      }
      .progress-bar {
        position: absolute;
        top: 0;
        left: 0;
        height: 6px;
        background-color: #00ecf9;
        border-radius: 20px;
        z-index: 1;
      }
      .active-sign {
        position: relative;
        z-index: 2;
        .active-needle {
          width: 30px;
          height: 34px;
          background-image: url("@/assets/images/point.png");
          background-size: cover;
          bottom: 1px;
          left: -11px;
          position: absolute;
        }
        .timeLine-point {
          width: 18px;
          height: 18px;
          background-color: transparent;
          border-radius: 50%;
          border: 1.6px solid #ffe5a4;
          position: absolute;
          display: flex;
          align-items: center;
          justify-content: center;
          top: -6px;
          left: -5px;
          cursor: pointer;
          user-select: none;
          will-change: left;
          transform: translate3d(0, 0, 0); // 强制启用硬件加速
          &:hover {
            transform: translate3d(0, 0, 0) scale(1.1);
          }
          &:active {
            transform: translate3d(0, 0, 0) scale(0.95);
          }
          &::after {
            content: "";
            width: 10px;
            height: 10px;
            background-color: #f9bd25;
            border-radius: 50%;
            position: absolute;
          }
        }
      }
    }
  }
}
</style>