index.js
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import React, { PureComponent } from 'react';
import { Chart } from '@antv/g2';
import DataSet from '@antv/data-set';
import Debounce from 'lodash-decorators/debounce';
import Bind from 'lodash-decorators/bind';
import equal from '../equal';
class ColumnarStack extends PureComponent {
componentDidMount() {
this.renderChart(this.props.data);
window.addEventListener('resize', this.resize);
}
componentWillReceiveProps(nextProps) {
if (!equal(this.props, nextProps)) {
this.renderChart(nextProps.data);
}
}
componentWillUnmount() {
window.removeEventListener('resize', this.resize);
if (this.chart) {
this.chart.destroy();
}
this.resize.cancel();
}
@Bind()
@Debounce(200)
resize() {
if (!this.node) {
return;
}
this.renderChart([]);
}
handleRef = (n) => {
this.node = n;
};
renderChart(data) {
const { xUnit = '', yUnit = '', height } = this.props;
if (!data || (data && data.length < 1)) return;
// clean
if (this.chart) {
this.chart.destroy();
}
this.node.innerHTML = '';
const chart = new Chart({
container: this.node,
autoFit: true, /* 图标自适应 */
height,
padding: 'auto',
});
// 计算每个柱子的占比
const ds = new DataSet();
const dv = ds.createView().source(data).transform({
type: 'percent',
field: 'y', // 统计销量
dimension: 'type', // 每年的占比
groupBy: ['x'], // 以不同产品类别为分组
as: 'percent',
});
chart.data(dv.rows, {
percent: {
min: 0,
formatter: (val) => {
return `${(val * 100).toFixed(2)}${yUnit}`;
},
},
});
chart.axis('x', {
label: {
formatter: (val) => {
return `${val}${xUnit}`;
},
},
});
chart.interval().adjust('stack').position('x*percent').color('type')
.tooltip('x*y*type', (name, value, type) => {
return {
title: `${name}${xUnit}`,
name: type,
value: `${value}`,
};
});
chart.render();
this.chart = chart;
}
render() {
return (
<div ref={this.handleRef} />
);
}
}
export default ColumnarStack;