上一片笔记封装了柱形图和折线图
这一篇封装饼图、仪表盘和状态图
首先是饼图：
<template>
<div>
<div
ref='piechart'
class='echartbox'>
</div>
</div>
</template>
<script>
let echarts = require('echarts/lib/echarts')
// 引入饼图组件
require('echarts/lib/chart/pie')
// 引入提示框和title组件
require('echarts/lib/component/tooltip')
require('echarts/lib/component/title')
require('echarts/lib/component/legend')
export default {
name: 'Pie',
props: {
// texttitle: String,
// legenddata: Array,
// seriesdata: Array,
textlink: {
type: String,
required: false,
default: ''
},
clicklink: {
type: Boolean,
required: false,
default: false
},
piedata: Object
},
data () {
return {
link: this.textlink,
click_link: this.clicklink,
title: '',
legend_data: [],
series_data: []
}
},
watch: {
piedata (val) {
this.title = val.title
this.legend_data = val.legend_data
this.series_data = val.series_data
this.drawPie()
}
},
mounted () {
// this.drawPie()
},
methods: {
drawPie () {
let myCharts = echarts.init(this.$refs.piechart)
myCharts.setOption({
color: ['#83d0d5', '#f1cb48', '#188ae2', '#E8830B', '#7460ae', '#fc4b6c', '#31ce77', '#eae0bc', '#e732cb', '#9dce8a'],
title: {
text: this.title,
left: '35',
top: '20',
link: this.link,
textStyle: {
color: '#B6B6B6'
}
},
tooltip: {
trigger: 'item',
formatter: '{b} : {c} ({d}%)'
},
legend: {
bottom: 10,
left: 'center',
data: this.legend_data,
textStyle: {
color: '#B6B6B6'
}
},
series: [
{
name: this.title,
type: 'pie',
radius: '55%',
center: ['50%', '45%'],
avoidLabelOverlap: false,
data: this.series_data,
label: {
normal: {
formatter: '{c}'
}
}
}
]
})
myCharts.on('click', this.clickEchats)
},
clickEchats (param) {
console.log(param)
if (this.click_link) {
this.click_link = 'https://www.baidu.com/'
window.location.href = this.click_link
}
}
}
}
</script>
注意点：
1.饼图没有axis轴的数据，座椅后台返回的参数通常是三个，title，legend_data,series，我们将其直接一起放在piedata传递给子组件，一起传除了父组件传参的时候看不来不冗余，还有一个重要的原因，我们只需要在子组件中监听piedata的变化即可，然后会重新绘制图表，要不然需要监听三个参数
2.其他传默认值和bar图是一样的，不浪费口舌了，饼图没做自适应，因为大小差不了多少
3.饼图添加了一个点击的功能，就是点击饼图的那一部分，会跳转，但是不是所有的饼图都会跳转，所以设置了一个布尔值，默认是false,不传值默认就是false，不能点击，如果传值的话，传true的话们就可以点击。
myCharts.on('click', this.clickEchats)
},
clickEchats (param) {
console.log(param)
if (this.click_link) {
this.click_link = 'https://www.baidu.com/'
window.location.href = this.click_link
}
}
}给echarts添加点击事件，如果click的值为true的话，就会实现跳转。
仪表盘组件的实现
<template>
<div class='gaugeinfo'>
<div
ref='gaugechart'
class='echartbox'
>
</div>
<p class='targetnum'>Target:{{this.target_num}}</p>
</div>
</template>
<script>
// 引入基本模板
let echarts = require('echarts/lib/echarts')
// 引入仪表图组件
require('echarts/lib/chart/gauge')
// 引入提示框和title组件
require('echarts/lib/component/tooltip')
require('echarts/lib/component/title')
export default {
name: 'Gauge',
props: {
textlink: {
type: String,
required: false,
default: ''
},
gaugedata: Object
},
data () {
return {
link: this.textlink,
maxnum: 0,
target_num: 0,
title: '',
series_data: []
}
},
watch: {
gaugedata (val) {
this.maxnum = val.max
this.target_num = val.target
this.title = val.title
this.series_data = val.data
this.drawGauge()
}
},
mounted () {
// this.drawGauge()
},
methods: {
drawGauge () {
let myCharts = echarts.init(this.$refs.gaugechart)
let maxnum = this.maxnum
let target = this.target_num
let rate = target / maxnum
myCharts.setOption({
color: ['#83d0d5', '#f1cb48', '#188ae2', '#E8830B', '#7460ae', '#fc4b6c', '#31ce77', '#eae0bc', '#e732cb', '#9dce8a'],
tooltip: {
formatter: '{b}:{c}'
},
title: {
text: this.title,
left: '35',
top: '20',
link: this.link,
textStyle: {
color: '#B6B6B6'
}
},
series: [
{
name: this.title,
type: 'gauge',
detail: {
formatter: function (value) {
console.log(value)
return 'Actual : ' + value
},
fontSize: '14',
offsetCenter: [0, '25%']
},
center: ['50%', '68%'],
radius: '100%',
startAngle: 160,
endAngle: 20,
min: 0,
max: maxnum,
splitNumber: 10,
axisTick: {
show: false
},
axisLine: {
lineStyle: {
color: [[rate, '#4E76BA'], [1, '#E8830B']]
}
},
splitLine: {
lineStyle: {
color: '#898D95',
width: 1
}
},
axisLabel: {
color: '#BFC2C8',
formatter: function (value) {
var median = maxnum / 2
var max = maxnum
switch (value) {
case 0: return '0'
case median: return median
case max: return maxnum
}
}
},
title: {
show: false
},
// data: [{value: '25', name: 'Actual'}]
data: this.series_data
}
]
})
}
}
}
</script>注意点：
1.仪表盘的封装 和其他的不一样，需要有一个目标值和实际值，有两种颜色，未达标是一种颜色，达标了是一种颜色，所以需要根据数据控制仪表盘的颜色，在axisLine中实现
axisLine: {
lineStyle: {
color: [[rate, '#4E76BA'], [1, '#E8830B']]
}
}2.同时，我们并不希望显示所有的指针值，因为可能会出现非整数或者各种乱七八糟的显示，所以我们规定只显示三个数值，0，中间值和最大值
在axisLabel中定义
3.其余的就是父子组件中传值和其他的一样，监听一下来自父组件的传值
状态图组件的实现
状态图实际上是只显示一组数据的柱形图，但是根据内容的不同，柱形图的颜色显示不同，来代表不同的状态
<template>
<div>
<div
ref='statusbarchart'
class='echartbox'
>
</div>
</div>
</template>
<script>
// 引入基本模板
let echarts = require('echarts/lib/echarts')
// 引入柱状图组件
require('echarts/lib/chart/bar')
// 引入提示框和title组件
require('echarts/lib/component/tooltip')
require('echarts/lib/component/title')
export default {
name: 'StatusBar',
props: {
// subtext: String,
// texttitle: String,
// axisdata: Array,
// seriesdata: Array,
textlink: {
type: String,
required: false,
default: ''
},
sublink: {
type: String,
required: false,
default: ''
},
xname: {
type: String,
required: false,
default: ''
},
yname: {
type: String,
required: false,
default: ''
},
statusdata: Object
},
data () {
return {
sun_link: this.sublink,
link: this.textlink,
x_name: this.xname,
y_name: this.yname,
title: '',
subtitle: '',
axis_data: [],
series_data: []
}
},
watch: {
statusdata (val) {
this.title = val.title
this.subtitle = val.subtitle
this.axis_data = val.Axis_data
this.series_data = val.series_data
this.drawBar()
}
},
mounted () {
// this.drawBar()
},
methods: {
drawBar () {
let myCharts = echarts.init(this.$refs.statusbarchart)
myCharts.setOption({
title: {
text: this.title,
left: '35',
link: this.link,
textStyle: {
color: '#B6B6B6'
},
subtext: this.subtitle,
sublink: this.sub_link,
subtextStyle: {
color: '#B6B6B6',
fontSize: 18,
fontWeight: 'bold'
}
},
tooltip: {
trigger: 'axis',
axisPointer: {
type: 'shadow'
}
},
grid: {
left: '15%',
bottom: '30%',
top: '25%'
},
legend: {
show: false
},
xAxis: [
{
type: 'category',
position: 'bottom',
name: this.x_name,
nameLocation: 'center',
nameGap: '35',
data: this.axis_data,
axisTick: {
show: false
},
axisLabel: {
textStyle: {
color: '#BFC2C8'
},
rotate: 30,
interval: 0
},
axisLine: {
lineStyle: {
color: '#BFC2C8'
}
}
}
],
yAxis: [
{
type: 'value',
left: '10',
name: this.y_name,
nameLocation: 'center',
nameGap: '45',
axisTick: {
show: false
},
axisLine: {
lineStyle: {
color: '#BFC2C8'
}
},
splitLine: {
lineStyle: {
color: '#898D95'
}
},
axisLabel: {
textStyle: {
color: '#BFC2C8'
},
interval: 0,
formatter: function (value, index) {
if (value >= 1000 && value < 10000000) {
value = value / 1000 + 'K'
} else if (value >= 1000000 && value < 1000000000) {
value = value / 1000000 + 'M'
} else if (value >= 1000000000) {
value = value / 1000000000 + 'B'
}
return value
}
}
}
],
series: this.series_data
})
window.addEventListener('resize', function () {
myCharts.resize()
})
}
}
}
</script>注意点：
如何控制柱形图颜色的显示？
在series中的seriesdata中itemStyle 的color定义柱形图的颜色
// this.$set(this.statusdata.series_data[0], 'itemStyle', {
// color: function (params) {
// // console.log(params)
// var dataindex = params.dataIndex
// // console.log(dataindex)
// if (dataindex < 8) {
// return '#E3405C'
// } else if (dataindex === 8) {
// return '#1BBA83'
// } else {
// return '#4E76BA'
// }
// }
// })其余的和其他组件父子传值是一样的，注意监听来自父组件的数据变化。