REACT: How to build a half donut

Question

I'm newbie with react-google-charts and I'm developing a half pie donut but despite of having made it, I've got a problem and this problem is that summatory of % of visible half pie is only 50% because the other 50% is hiddend.

How can I make that visible part would be 100%?

Here you've got the code of the chart:

import React, { Component } from "react";
import { Chart } from "react-google-charts";

class PieChart extends Component {
  constructor(props) {
    super(props);
    this.props = props;
    this.state = {
      loaded: false
    };
  }

  componentDidMount() {
    this.setState(
      {
        loaded: true
      },
      () => {
        this.setState({
          width: document.querySelector("#container").getBoundingClientRect()
            .width
        });
      }
    );
  }

  render() {
    return (
      <div>
        {this.state.loaded ? (
          <div id="container">
            <Chart
              width={this.state.width}
              height={"400px"}
              chartType="PieChart"
              loader={<div>Loading Chart</div>}
              data={this.props.data}
              options={{
                backgroundColor: "transparent",
                title: "Distribución de posesiones",
                // Just add this option
                pieHole: 0.4,
                pieStartAngle: 270,
                slices: {
                  4: {
                    color: "transparent"
                  }
                }
              }}
            />
          </div>
        ) : (
          "Cargando datos"
        )}
      </div>
    );
  }
}

module.exports.PieChart = PieChart;

And as you can see, the summatory of the part which is visible is only 50% and not 100%.

So, how can I make that visible part would be 100% of total?

You can check all the code here:

Answer 1

We can alter labels value is using callback function of react-google-chart like below. In callback function we can get to access of svg of pie chart.

<Chart

   chartEvents={[
   {
      eventName: "ready",
      callback: ({ chartWrapper, google }) => {
          // const chart = chartWrapper.getChart();
          let svg = document.querySelector("svg");
          console.log("svg childNodes are ",svg.childNodes)

          // YOU CAN WRITE THIS CODE USING FOR EACH BUT FOR EASY UNDERSTANDING I WROTE LIKE THIS

          // first 2 children in svg are heading & label colors(sidenav)

          for(var i=3;i<svg.childNodes.length-1;i++) {
             var temp = svg.childNodes[i].childNodes[1].innerHTML;
             if(temp.length>3) {
                temp = temp.substring(0,3)
             }
             else {
                temp = temp.substring(0,2)
             }
             // doubling to make them as 100% summary
             temp = parseFloat(temp)*2;
             svg.childNodes[i].childNodes[1].innerHTML = temp+'%';


         }

       } 
       } 
 ]}


          width={this.state.width}
          height={"400px"}
          chartType="PieChart"
          loader={<div>Loading Chart</div>}
          data={this.props.data}
          options={{
            backgroundColor: "transparent",
            title: "Distribución de posesiones",
            pieHole: 0.4,
            pieStartAngle: 270,
            slices: {
              4: {
                color: "transparent"
              }
            }
          }}
/>

NOTE If you have static data then it will be fine. If your data values changes then every time we don't get donut shape. Charts doesn't work that way.