vue 甘特图（三）：甘特图右侧内容拖动展示

根号九九2023-10-09 17:03

vue3 甘特图（三）：甘特图右侧内容拖动展示内容

解决因多个项目周期跨度不同，在一页屏幕里展示不完全，需要通过拖动甘特图下方的滚动条，去查看对应时间段内的内容

拖拽滚动视图，展示对应时间甘特图

构思，通过监听内容拖拽的距离，同时使滚动条滑动相同距离，从而达到效果。
复制代码 
//拖拽滚动视图
const scrollInit = () => {
  const nav = document.querySelectorAll('.gantt_task')[0]
  const parNav = document.querySelectorAll('.gantt_hor_scroll')[0]
  parNav.scrollLeft = 0
  let flag
  let downX
  let scrollLeft
  nav.addEventListener('mousedown', function (event) {
    flag = true
    downX = event.clientX // 获取到点击的x下标
    scrollLeft = this.scrollLeft // 获取当前元素滚动条的偏移量
  })
  nav.addEventListener('mousemove', function (event) {
    if (flag) {
      let moveX = event.clientX
      let scrollX = moveX - downX
      parNav.scrollLeft = scrollLeft - scrollX
    }
  })
  // 鼠标抬起停止拖动
  nav.addEventListener('mouseup', function () {
    flag = false
  })
  // 鼠标离开元素停止拖动
  nav.addEventListener('mouseleave', function (event) {
    flag = false
  })
}

完整代码

复制代码 
<template>
  <section class="my-gantt">
    <div class="time-box">
      <el-radio-group v-model="data.timeState" @change="changeTime">
        <el-radio-button
          v-for="(time, t_index) in data.timeList"
          :key="t_index"
          :label="time.code"
          size="default"
          border
          >{{ time.name }}</el-radio-button
        >
      </el-radio-group>
    </div>
    <div id="gantt_here" class="gantt-container"></div>
  </section>
</template>

<script setup>
import { reactive, toRefs, onBeforeMount, onMounted, watchEffect, defineExpose } from 'vue'

import { gantt } from 'dhtmlx-gantt'
import 'dhtmlx-gantt/codebase/dhtmlxgantt.css'

const data = reactive({
  timeList: [
    // {
    //     name: "周",
    //     code: "week",
    // },
    {
      name: '月',
      code: 'month'
    },
    {
      name: '季',
      code: 'quarter'
    },
    {
      name: '年',
      code: 'year'
    }
  ],
  timeState: 'month',
  demoData: {
    data: [
      {
        id: 520,
        projectName: '项目1',
        startTime: '2023-09-25',
        endTime: '2023-10-31',
        showEndTime: '2023-11-01',
        projectStatus: '暂无任务',
        projectProgress: 0,
        projectRatio: '',
        projectTotalTime: 0,
        projectUsedTime: 0,
        functionName: '',
        xmdj: '2',
        cityName: '成都',
        name: '1',
        projectMap: {},
        parent: 0,
        start_date: '2023-09-24 16:00:00.000',
        end_date: '2023-10-31 16:00:00.000',
        progress: 0.5,
        duration: 37
      },
      {
        id: 517,
        projectName: '项目2',
        startTime: '2023-09-18',
        endTime: '2023-10-23',
        showEndTime: '2023-10-24',
        projectStatus: '暂无任务',
        projectProgress: 0,
        projectRatio: '',
        projectTotalTime: 0,
        projectUsedTime: 0,
        functionName: '',
        xmdj: '0',
        cityName: '深圳',
        name: '2',
        projectMap: {},
        parent: 0,
        start_date: '2023-09-17 16:00:00.000',
        end_date: '2023-10-23 16:00:00.000',
        progress: 0.2
      },
      {
        id: 505,
        projectName: '项目3',
        startTime: '2023-09-04',
        endTime: '2023-09-30',
        showEndTime: '2023-10-01',
        projectStatus: '滞后',
        projectProgress: 0.76,
        projectRatio: 0.12,
        projectTotalTime: 3267.6,
        projectUsedTime: 2477.7,
        functionName: '现状还原',
        xmdj: '3',
        cityName: '成都',
        name: '3',
        projectMap: {},
        parent: 0,
        start_date: '2023-09-03 16:00:00.000',
        end_date: '2023-09-30 16:00:00.000',
        progress: 0.1
      },
      {
        id: 508,
        projectName: '项目4',
        startTime: '2023-09-04',
        endTime: '2023-10-20',
        showEndTime: '2023-10-21',
        projectStatus: '滞后',
        projectProgress: 0.57,
        projectRatio: 0.04,
        projectTotalTime: 3582.5,
        projectUsedTime: 2033.2,
        functionName: '生活圈',
        xmdj: '1',
        cityName: '成都',
        name: '4',
        projectMap: {},
        parent: 0,
        start_date: '2023-09-03 16:00:00.000',
        end_date: '2023-10-20 16:00:00.000',
        progress: 0.15
      },
      {
        id: 511,
        projectName: '项目5',
        startTime: '2023-09-01',
        endTime: '2023-10-31',
        showEndTime: '2023-11-01',
        projectStatus: '滞后',
        projectProgress: 0.07,
        projectRatio: 0.03,
        projectTotalTime: 2150.5,
        projectUsedTime: 140,
        functionName: '悬浮球',
        xmdj: '1',
        cityName: '成都',
        name: '5',
        projectMap: {},
        parent: 0,
        start_date: '2023-07-31 16:00:00.000',
        end_date: '2023-10-31 16:00:00.000',
        progress: 0.28
      },
      {
        id: 507,
        projectName: '项目6',
        startTime: '2023-08-28',
        endTime: '2023-10-01',
        showEndTime: '2023-10-02',
        projectStatus: '滞后',
        projectProgress: 0.48,
        projectRatio: 0.21,
        projectTotalTime: 4957,
        projectUsedTime: 2367,
        functionName: '产品原型图',
        xmdj: '1',
        cityName: '三亚',
        name: '6',
        projectMap: {
          美术: 1
        },
        parent: 0,
        start_date: '2023-07-27 16:00:00.000',
        end_date: '2023-10-01 16:00:00.000',
        progress: 0.33
      },
      {
        id: 1,
        projectName: '项目7',
        startTime: '2023-08-28',
        endTime: '2023-10-25',
        showEndTime: '2023-10-26',
        projectStatus: '滞后',
        projectProgress: 0.27,
        projectRatio: 0.15,
        projectTotalTime: 2027.5,
        projectUsedTime: 557,
        functionName: '测量工具',
        xmdj: '1',
        cityName: '佛山',
        name: '7',
        projectMap: {},
        parent: 0,
        start_date: '2023-06-27 16:00:00.000',
        end_date: '2023-10-25 16:00:00.000',
        progress: 0.67
      },
      {
        id: 2,
        projectName: '项目7',
        startTime: '2023-08-28',
        endTime: '2023-10-25',
        showEndTime: '2023-10-26',
        projectStatus: '滞后',
        projectProgress: 0.27,
        projectRatio: 0.15,
        projectTotalTime: 2027.5,
        projectUsedTime: 557,
        functionName: '测量工具',
        xmdj: '1',
        cityName: '佛山',
        name: '7',
        projectMap: {},
        parent: 0,
        start_date: '2023-06-27 16:00:00.000',
        end_date: '2023-10-25 16:00:00.000',
        progress: 0.67
      },
      {
        id: 3,
        projectName: '项目7',
        startTime: '2023-08-28',
        endTime: '2023-10-25',
        showEndTime: '2023-10-26',
        projectStatus: '滞后',
        projectProgress: 0.27,
        projectRatio: 0.15,
        projectTotalTime: 2027.5,
        projectUsedTime: 557,
        functionName: '测量工具',
        xmdj: '1',
        cityName: '佛山',
        name: '7',
        projectMap: {},
        parent: 0,
        start_date: '2023-06-27 16:00:00.000',
        end_date: '2023-10-25 16:00:00.000',
        progress: 0.67
      },
      {
        id: 4,
        projectName: '项目7',
        startTime: '2023-08-28',
        endTime: '2023-10-25',
        showEndTime: '2023-10-26',
        projectStatus: '滞后',
        projectProgress: 0.27,
        projectRatio: 0.15,
        projectTotalTime: 2027.5,
        projectUsedTime: 557,
        functionName: '测量工具',
        xmdj: '1',
        cityName: '佛山',
        name: '7',
        projectMap: {},
        parent: 0,
        start_date: '2023-06-27 16:00:00.000',
        end_date: '2023-10-25 16:00:00.000',
        progress: 0.67
      },
      {
        id: 5,
        projectName: '项目7',
        startTime: '2023-08-28',
        endTime: '2023-10-25',
        showEndTime: '2023-10-26',
        projectStatus: '滞后',
        projectProgress: 0.27,
        projectRatio: 0.15,
        projectTotalTime: 2027.5,
        projectUsedTime: 557,
        functionName: '测量工具',
        xmdj: '1',
        cityName: '佛山',
        name: '7',
        projectMap: {},
        parent: 0,
        start_date: '2023-06-27 16:00:00.000',
        end_date: '2023-10-25 16:00:00.000',
        progress: 0.67
      },
      {
        id: 6,
        projectName: '项目7',
        startTime: '2023-08-28',
        endTime: '2023-10-25',
        showEndTime: '2023-10-26',
        projectStatus: '滞后',
        projectProgress: 0.27,
        projectRatio: 0.15,
        projectTotalTime: 2027.5,
        projectUsedTime: 557,
        functionName: '测量工具',
        xmdj: '1',
        cityName: '佛山',
        name: '7',
        projectMap: {},
        parent: 0,
        start_date: '2023-06-27 16:00:00.000',
        end_date: '2023-10-25 16:00:00.000',
        progress: 0.67
      },
      {
        id: 7,
        projectName: '项目7',
        startTime: '2023-08-28',
        endTime: '2023-10-25',
        showEndTime: '2023-10-26',
        projectStatus: '滞后',
        projectProgress: 0.27,
        projectRatio: 0.15,
        projectTotalTime: 2027.5,
        projectUsedTime: 557,
        functionName: '测量工具',
        xmdj: '1',
        cityName: '佛山',
        name: '7',
        projectMap: {},
        parent: 0,
        start_date: '2023-06-27 16:00:00.000',
        end_date: '2023-10-25 16:00:00.000',
        progress: 0.67
      },
      {
        id: 8,
        projectName: '项目7',
        startTime: '2023-08-28',
        endTime: '2023-10-25',
        showEndTime: '2023-10-26',
        projectStatus: '滞后',
        projectProgress: 0.27,
        projectRatio: 0.15,
        projectTotalTime: 2027.5,
        projectUsedTime: 557,
        functionName: '测量工具',
        xmdj: '1',
        cityName: '佛山',
        name: '7',
        projectMap: {},
        parent: 0,
        start_date: '2023-06-27 16:00:00.000',
        end_date: '2023-10-25 16:00:00.000',
        progress: 0.67
      },
      {
        id: 9,
        projectName: '项目7',
        startTime: '2023-08-28',
        endTime: '2023-10-25',
        showEndTime: '2023-10-26',
        projectStatus: '滞后',
        projectProgress: 0.27,
        projectRatio: 0.15,
        projectTotalTime: 2027.5,
        projectUsedTime: 557,
        functionName: '测量工具',
        xmdj: '1',
        cityName: '佛山',
        name: '7',
        projectMap: {},
        parent: 0,
        start_date: '2023-06-27 16:00:00.000',
        end_date: '2023-10-25 16:00:00.000',
        progress: 0.67
      }
    ]
  }
})

const zoomConfig = {
  levels: [
    {
      name: 'day',
      scale_height: 60,
      scales: [{ unit: 'day', step: 1, format: '%d %M' }]
    },
    {
      name: 'week',
      scale_height: 60,
      scales: [
        {
          unit: 'week',
          step: 1,
          format: function (date) {
            let dateToStr = gantt.date.date_to_str('%m-%d')
            let endDate = gantt.date.add(date, -6, 'day')
            let weekNum = gantt.date.date_to_str('%W')(date) //第几周
            return dateToStr(endDate) + ' 至 ' + dateToStr(date)
          }
        },
        {
          unit: 'day',
          step: 1,
          format: '%d', // + "周%D"
          css: function (date) {
            if (date.getDay() == 0 || date.getDay() == 6) {
              return 'day-item weekend weekend-border-bottom'
            } else {
              return 'day-item'
            }
          }
        }
      ]
    },
    {
      name: 'month',
      scale_height: 60,
      min_column_width: 18,
      scales: [
        { unit: 'month', format: '%Y-%m' },
        {
          unit: 'day',
          step: 1,
          format: '%d',
          css: function (date) {
            if (date.getDay() == 0 || date.getDay() == 6) {
              return 'day-item weekend weekend-border-bottom'
            } else {
              return 'day-item'
            }
          }
        }
      ]
    },
    {
      name: 'quarter',
      height: 60,
      min_column_width: 110,
      scales: [
        {
          unit: 'quarter',
          step: 1,
          format: function (date) {
            let yearStr = new Date(date).getFullYear() + '年'
            let dateToStr = gantt.date.date_to_str('%M')
            let endDate = gantt.date.add(gantt.date.add(date, 3, 'month'), -1, 'day')
            return yearStr + dateToStr(date) + ' - ' + dateToStr(endDate)
          }
        },
        {
          unit: 'week',
          step: 1,
          format: function (date) {
            let dateToStr = gantt.date.date_to_str('%m-%d')
            let endDate = gantt.date.add(date, 6, 'day')
            let weekNum = gantt.date.date_to_str('%W')(date)
            return dateToStr(date) + ' 至 ' + dateToStr(endDate)
          }
        }
      ]
    },
    {
      name: 'year',
      scale_height: 50,
      min_column_width: 150,
      scales: [
        { unit: 'year', step: 1, format: '%Y年' },
        { unit: 'month', format: '%Y-%m' }
      ]
    }
  ]
}

//初始化甘特图
const initGantt = () => {
  let dateToStr = gantt.date.date_to_str('%Y.%m.%d')
  gantt.config.grid_width = 350
  gantt.config.add_column = false //添加符号

  //时间轴图表中，如果不设置，只有行边框，区分上下的任务，设置之后带有列的边框，整个时间轴变成格子状。
  gantt.config.autofit = false
  gantt.config.row_height = 60
  gantt.config.bar_height = 34
  // gantt.config.fit_tasks = true //自动延长时间刻度，以适应所有显示的任务
  gantt.config.auto_types = true //将包含子任务的任务转换为项目，将没有子任务的项目转换回任务
  gantt.config.xml_date = '%Y-%m-%d' //甘特图时间数据格式
  gantt.config.readonly = true //是否只读

  gantt.templates.task_text = function (start, end, task) {
    return task.projectName
  }

  gantt.config.columns = [
    {
      name: 'projectName',
      label: '项目名称',
      tree: true,
      width: '*'
    },
    {
      name: '',
      label: '时间',
      align: 'center',
      width: 150,
      template: function (item) {
        return `<div class="project-time">${
          dateToStr(item.start_date) + '-' + item.endTime.replace(/[-]/g, '.')
        }</div>`
      }
    }
  ]

  gantt.i18n.setLocale('cn') //设置语言
  gantt.init('gantt_here') //初始化
  gantt.parse(data.demoData) //填充数据
  scrollInit()
  gantt.ext.zoom.init(zoomConfig) //配置初始化扩展
  gantt.ext.zoom.setLevel('month') //切换到指定的缩放级别
}

//拖拽滚动视图
const scrollInit = () => {
  const nav = document.querySelectorAll('.gantt_task')[0]
  const parNav = document.querySelectorAll('.gantt_hor_scroll')[0]
  parNav.scrollLeft = 0
  let flag
  let downX
  let scrollLeft
  nav.addEventListener('mousedown', function (event) {
    flag = true
    downX = event.clientX // 获取到点击的x下标
    scrollLeft = this.scrollLeft // 获取当前元素滚动条的偏移量
  })
  nav.addEventListener('mousemove', function (event) {
    if (flag) {
      let moveX = event.clientX
      let scrollX = moveX - downX
      parNav.scrollLeft = scrollLeft - scrollX
    }
  })
  // 鼠标抬起停止拖动
  nav.addEventListener('mouseup', function () {
    flag = false
  })
  // 鼠标离开元素停止拖动
  nav.addEventListener('mouseleave', function (event) {
    flag = false
  })
}

const changeTime = () => {
  gantt.ext.zoom.setLevel(data.timeState)
}

onBeforeMount(() => {})
onMounted(() => {
  initGantt()
})
watchEffect(() => {})
defineExpose({
  ...toRefs(data)
})
</script>
<style scoped lang="scss">
.my-gantt {
  height: 800px;
  width: 100vw;
  .time-box {
    text-align: center;
    margin-bottom: 20px;
  }
  ::v-deep .gantt-container {
    width: 100%;
    height: 100%;
    .weekend {
      background: #ff9e2f;
      color: #fff;
    }
  }
}
</style>

后续：任务条展示多种数据，或一行任务展示多个子任务

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