CN-773: 曲线图支持框选缩放

This commit is contained in:
刘洪洪
2022-11-09 17:23:31 +08:00
parent e355eb31cd
commit 39edceb0dd
5 changed files with 126 additions and 6 deletions

View File

@@ -46,6 +46,10 @@
<div style="height: calc(100% - 74px); position: relative">
<chart-no-data v-if="isNoData"></chart-no-data>
<div class="chart-drawing" v-show="showMarkLine && !isNoData" id="overviewLineChart"></div>
<!-- todo 后续改动此处为框选返回-->
<!-- <div id="brushBtn" style="position: absolute;left: 0;top: 0;" v-show="mouseDownFlag">-->
<!-- <el-button @click.stop="backBrushHistory">返回</el-button>-->
<!-- </div>-->
</div>
</div>
</template>
@@ -121,7 +125,9 @@ export default {
leftOffset: 0,
sizes: [3, 4, 6, 8, 9, 10],
dynamicVariable: '',
showMarkLine: true
showMarkLine: true,
mouseDownFlag: false,
brushHistory: []
}
},
watch: {
@@ -314,6 +320,28 @@ export default {
this.toggleLoading(false)
})
},
/**
* 初始化echartsdom用于右键点击返回框选
*/
domInit () {
const self = this
// 去掉默认的contextmenu事件否则会和右键事件同时出现。
document.oncontextmenu = function (e) {
e.preventDefault()
}
document.getElementById('overviewLineChart').onmousedown = function (e) {
// e.button: 0左键1滚轮2右键
if (e.button === 2) {
self.myChart.dispatchAction({
type: 'brush',
areas: [] // 删除选框
})
self.mouseDownFlag = true
document.getElementById('brushBtn').style.left = e.layerX + 'px'
document.getElementById('brushBtn').style.top = e.layerY + 74 + 'px'
}
}
},
echartsInit (echartsData, show) {
if (this.lineTab) {
this.handleActiveBar()
@@ -322,8 +350,12 @@ export default {
echartsData = echartsData.filter(t => t.show === true)
}
const _this = this
const dom = document.getElementById('overviewLineChart')
!this.myChart && (this.myChart = echarts.init(dom))
// !this.myChart && (this.myChart = echarts.init(dom))
// 此处为验证是否因dom未销毁导致图表出错后续可能会改
let dom = null
dom = document.getElementById('overviewLineChart')
this.myChart = null
this.myChart = echarts.init(dom)
this.chartOption = stackedLineChartOption
const chartOption = this.chartOption.series[0]
this.chartOption.series = echartsData.map((t, i) => {
@@ -422,6 +454,53 @@ export default {
}
this.showMarkLine = true
this.myChart.setOption(this.chartOption)
// 设置参见官网https://echarts.apache.org/zh/api.html#action.brush.brush
this.myChart.dispatchAction({
// 刷选模式的开关。使用此 action 可将当前鼠标变为可刷选状态。事实上,点击 toolbox 中的 brush 按钮时,就是通过这个 action将当前普通鼠标变为刷选器的。
type: 'takeGlobalCursor',
// 如果想变为“可刷选状态”,必须设置。不设置则会关闭“可刷选状态”。
key: 'brush',
brushOption: {
// 参见 brush 组件的 brushType。如果设置为 false 则关闭“可刷选状态”。
brushType: 'lineX',
xAxisIndex: 0,
// 单击清除选框
brushMode: 'single',
// 选择完毕再返回所选数据
throttleType: 'debounce'
}
})
const self = this
this.myChart.on('brushEnd', function (params) {
self.myChart.dispatchAction({
type: 'brush',
areas: [] // 删除选框
})
if (!self.mouseDownFlag) {
// 避免点击空白区域报错
if (params.areas !== undefined && params.areas.length > 0) {
// 因为人工选择不可能出现框选范围和x轴重合的情况
self.brushHistory.unshift({
startTime: _.cloneDeep(self.timeFilter.startTime) * 1000,
endTime: _.cloneDeep(self.timeFilter.endTime) * 1000
})
const rangeObj = {
startTime: Math.ceil(params.areas[0].coordRange[0]),
endTime: Math.ceil(params.areas[0].coordRange[1])
}
// todo 目前暂定框选最小范围为5分钟后续可能会变动
if (rangeObj.endTime - rangeObj.startTime < 5 * 60 * 1000) {
rangeObj.startTime = rangeObj.endTime - 5 * 60 * 1000
}
_this.$store.commit('setRangeEchartsData', rangeObj)
}
}
})
},
activeChange (item, index) {
this.lineTab = item.class
@@ -540,9 +619,25 @@ export default {
dataIntegrationArray.sort((a, b) => { return a[1] - b[1] })
const sortIndex = dataIntegrationArray.findIndex(a => a[2] === index)
return this.sizes[sortIndex]
},
/**
* 鼠标右键返回框选的时间范围
*/
backBrushHistory () {
this.myChart.dispatchAction({
type: 'brush',
areas: [] // 删除选框
})
if (this.brushHistory.length > 0) {
this.$store.commit('setRangeEchartsData', _.cloneDeep(this.brushHistory[0]))
this.brushHistory.shift()
}
this.mouseDownFlag = false
}
},
mounted () {
// todo 初始化鼠标事件,开启右键返回
// this.domInit()
this.timer = setTimeout(() => {
if (this.lineTab) {
const data = this.mpackets.find(t => t.class === this.lineTab)