grafana/public/app/plugins/panel/gauge/GaugePanel.tsx

// Libraries
import React, { PureComponent } from 'react';

// Services & Utils
import { config } from 'app/core/config';

// Components
import { Gauge } from '@grafana/ui';

// Types
import { GaugeOptions } from './types';
import { DisplayValue, PanelProps } from '@grafana/ui';
import { getSingleStatValues } from '../singlestat2/SingleStatPanel';
import { ProcessedValuesRepeater } from '../singlestat2/ProcessedValuesRepeater';

export class GaugePanel extends PureComponent<PanelProps<GaugeOptions>> {
  renderValue = (value: DisplayValue, width: number, height: number): JSX.Element => {
    const { options } = this.props;

    return (
      <Gauge
        value={value}
        width={width}
        height={height}
        thresholds={options.thresholds}
        showThresholdLabels={options.showThresholdLabels}
        showThresholdMarkers={options.showThresholdMarkers}
        minValue={options.minValue}
        maxValue={options.maxValue}
        theme={config.theme}
      />
    );
  };

  getProcessedValues = (): DisplayValue[] => {
    return getSingleStatValues(this.props);
  };

  render() {
    const { height, width, options, panelData } = this.props;
    const { orientation } = options;
    return (
      <ProcessedValuesRepeater
        getProcessedValues={this.getProcessedValues}
        renderValue={this.renderValue}
        width={width}
        height={height}
        source={panelData}
        orientation={orientation}
      />
    );
  }
}