getuuid
export function getuuid() {
// 生成随机数
var s = []
var hexDigits = '0123456789abcdef'
for (var i = 0; i < 36; i++) {
s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1)
}
s[14] = '4' // bits 12-15 of the time_hi_and_version field to 0010
s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1) // bits 6-7 of the clock_seq_hi_and_reserved to 01
s[8] = s[13] = s[18] = s[23] = '-'
var uuid = s.join('')
return uuid
}
echart resize
import { debounce } from '@/utils'
export default {
data() {
return {
$_sidebarElm: null,
$_resizeHandler: null
}
},
mounted() {
this.$_resizeHandler = debounce(() => {
if (this.chart) {
this.chart.resize()
}
}, 100)
this.$_initResizeEvent()
this.$_initSidebarResizeEvent()
},
beforeDestroy() {
this.$_destroyResizeEvent()
this.$_destroySidebarResizeEvent()
},
// to fixed bug when cached by keep-alive
// https://github.com/PanJiaChen/vue-element-admin/issues/2116
activated() {
this.$_initResizeEvent()
this.$_initSidebarResizeEvent()
},
deactivated() {
this.$_destroyResizeEvent()
this.$_destroySidebarResizeEvent()
},
methods: {
// use $_ for mixins properties
// https://vuejs.org/v2/style-guide/index.html#Private-property-names-essential
$_initResizeEvent() {
window.addEventListener('resize', this.$_resizeHandler)
},
$_destroyResizeEvent() {
window.removeEventListener('resize', this.$_resizeHandler)
},
$_sidebarResizeHandler(e) {
if (e.propertyName === 'width') {
this.$_resizeHandler()
}
},
$_initSidebarResizeEvent() {
this.$_sidebarElm = document.getElementsByClassName('sidebar-container')[0]
this.$_sidebarElm && this.$_sidebarElm.addEventListener('transitionend', this.$_sidebarResizeHandler)
},
$_destroySidebarResizeEvent() {
this.$_sidebarElm && this.$_sidebarElm.removeEventListener('transitionend', this.$_sidebarResizeHandler)
}
}
}
柱状图和饼图切换
<template>
<el-card class="box-card" shadow="never">
<div
:id="uuid"
:class="className"
:style="{ height: height, width: width }"
/>
</el-card>
</template>
<script>
import echarts from 'echarts'
require('echarts/theme/macarons') // echarts theme
import resize from './mixins/resize'
import { getuuid } from '@/utils/index'
import { queryConserveLevelStatistics } from '@/api/bridge-file/bridge-chart'
export default {
mixins: [resize],
props: {
className: {
type: String,
default: 'chart'
},
width: {
type: String,
default: '100%'
},
height: {
type: String,
default: '220px'
},
autoResize: {
type: Boolean,
default: true
}
},
data() {
return {
chartData: null,
uuid: null,
chart: null
}
},
watch: {
chartData: {
deep: true,
handler(val) {
if (Object.keys(val).length === 0) {
this.chart.clear()
this.chart.showLoading({
text: '暂无数据',
color: '#ffffff',
textColor: '#8a8e91',
maskColor: 'rgba(255, 255, 255, 0.8)'
})
} else {
this.chart.hideLoading()
this.setOption(val)
}
}
}
},
created() {
this.uuid = getuuid()
this.getConserveLevelStatistics()
},
mounted() {
this.$nextTick(() => {
this.initChart()
})
},
beforeDestroy() {
if (!this.chart) {
return
}
this.chart.dispose()
this.chart = null
},
methods: {
async getConserveLevelStatistics() {
this.chartData = await queryConserveLevelStatistics()
},
initChart() {
const chartDom = document.getElementById(this.uuid)
this.chart = echarts.init(chartDom, 'macarons')
this.chart.showLoading({
text: '暂无数据',
color: '#ffffff',
textColor: '#8a8e91',
maskColor: 'rgba(255, 255, 255, 0.8)'
})
},
setOption(res) {
const scope = this
const data = res.map((item) => {
const arr = Object.values(item)
// const left = arr.shift()
// arr.splice(1, 0, left)
return arr
})
scope.option = {
title: { text: '桥梁养护等级分类统计', left: 'left' },
legend: {
type: 'scroll',
orient: 'vertical',
left: 5,
top: 50,
bottom: 5,
itemWidth: 10,
itemHeight: 10
},
tooltip: {},
dataset: {
dimensions: ['数量', '类型', '占比'],
source: data
}
}
const opt = JSON.parse(JSON.stringify(scope.option))
const pieOpt = scope.setPieChart()
// const barOpt = scope.setBarChart()
const temp = Object.assign(opt, pieOpt)
scope.chart.setOption(temp)
},
setPieChart() {
const scope = this
const opt = JSON.parse(JSON.stringify(scope.option))
const pieOpt = {
toolbox: {
show: true,
orient: 'vertical',
feature: {
myToolBar: { show: false },
myToolPie: {
show: true,
title: '切换为柱状图',
icon: 'path://M512 752.16a32 32 0 0 1-32-32V350.624a32 32 0 0 1 64 0v369.536a32 32 0 0 1-32 32zM320 752.576a32 32 0 0 1-32-32V512a32 32 0 0 1 64 0v208.576a32 32 0 0 1-32 32zM896 752.672a32 32 0 0 1-32-32V163.488a32 32 0 1 1 64 0v557.184a32 32 0 0 1-32 32zM704 752.736a32 32 0 0 1-32-32V224a32 32 0 1 1 64 0v496.736a32 32 0 0 1-32 32z',
// 点击返回事件
onclick: function() {
const barOpt = scope.setBarChart()
const temp = Object.assign(opt, barOpt)
scope.chart.clear()
scope.chart.setOption(temp)
}
},
saveAsImage: {}
}
},
series: [
{
type: 'pie',
radius: ['40%', '70%'],
startAngle: 45,
top: '30',
left: '30%',
encode: { itemName: 1, value: 0 },
label: {
show: true,
alignTo: 'labelLine',
verticalAlign: 'middle',
overflow: 'truncate',
position: 'outer',
edgeDistance: 10,
distanceToLabelLine: 10,
bleedMargin: 10,
formatter: '{d}%'
}
}
]
}
return pieOpt
},
setBarChart() {
const scope = this
const opt = JSON.parse(JSON.stringify(scope.option))
const barOpt = {
xAxis: {
type: 'category',
axisLabel: {
interval: 0,
rotate: 45,
formatter: function(name) {
if (name.length > 2) {
return name.slice(0, 2) + '...'
} else {
return name
}
}
},
name: '养护等级',
nameLocation: 'end',
nameRotate: 90,
nameTextStyle: {
align: 'center',
verticalAlign: 'middle'
}
},
yAxis: {
type: 'value',
name: '数量（座）'
},
grid: {
left: '10%',
right: '20%',
bottom: '30%'
},
toolbox: {
show: true,
orient: 'vertical',
feature: {
myToolPie: { show: false },
myToolBar: {
show: true,
title: '切换为饼图',
icon: 'path://M469.333333 213.333333v85.333334c-119.466667 12.8-213.333333 110.933333-213.333333 234.666666 0 128 106.666667 234.666667 234.666667 234.666667 123.733333 0 221.866667-93.866667 234.666666-213.333333h85.333334c-12.8 166.4-149.333333 298.666667-320 298.666666C315.733333 853.333333 170.666667 708.266667 170.666667 533.333333c0-170.666667 132.266667-307.2 298.666666-320z m384 298.666667h-341.333333V170.666667c187.733333 0 341.333333 153.6 341.333333 341.333333z m-256-243.2V426.666667h157.866667c-12.8-42.666667-106.666667-145.066667-157.866667-157.866667z',
onclick: function() {
const pieOpt = scope.setPieChart()
const temp = Object.assign(opt, pieOpt)
scope.chart.clear()
scope.chart.setOption(temp)
}
},
saveAsImage: {}
}
},
series: [
{
type: 'bar',
barMaxWidth: 40,
encode: { x: 1, y: 0, tooltip: [0, 1, 2] },
label: {
show: true,
align: 'left',
rotate: 90,
position: 'insideBottom',
distance: 15,
verticalAlign: 'middle',
formatter: function(params) {
if (params.value[2]) {
return params.value[2]
}
}
}
}
]
}
return barOpt
}
}
}
</script>
<style lang="scss" scoped></style>
