React highcharts:相同和不同图表中的共享工具提示

React highchart: Shared tooltip in same and different chart

我正在为一个项目使用 react-highchart。并显示两个图表: 1) 具有 2 个系列数据的折线图,它将在同一张图表上呈现两条线。 2) 条形图或柱形图。

现在,当我将鼠标悬停在一个点上时,它应该会在第一个图表和柱形图中的两条线上启用工具提示。 X 轴是日期时间。 它应该像这样在两条线上激活点:

react-highchart 中,我使用了 shared: true 属性,但它并没有使两条线都处于活动状态。

tooltip: {
  enabled: true,
  useHTML: true,
  shared: true,
  backgroundColor: 'rgba(255,255,255,1)',
  borderRadius: 3,
  shape: 'rectangle'
}

有没有办法让另一个图表的工具提示也处于活动状态?

编辑

经过建议,我在highcharts中检查synchronized-charts,但是代码示例在jQuery中,我需要它在react-highcharts中。我仍然尝试将代码转换为反应并这样做:

import ReactHighcharts from 'react-highcharts/ReactHighcharts';

/**
 * Override the reset function, we don't need to hide the tooltips and
 * crosshairs.
*/
ReactHighcharts.Highcharts.Pointer.prototype.reset = function reset() {
 return undefined;
};

ReactHighcharts.Highcharts.Point.prototype.highlight = function highlight(event) {
 event = this.series.chart.pointer.normalize(event);
 this.onMouseOver(); // Show the hover marker
 this.series.chart.tooltip.refresh(this); // Show the tooltip
 this.series.chart.xAxis[0].drawCrosshair(event, this); // Show the 
 crosshair
};

图表渲染回调后:

['mousemove', 'touchmove', 'touchstart'].forEach(eventType => {
  const container = document.getElementById('tab__charts');
  container.removeEventListener(eventType, this.handleMouseMove);
  container.addEventListener(eventType, this.handleMouseMove);
});

处理鼠标移动和 syncExtreme:

handleMouseMove(e) {
  for (let i = 0; i < ReactHighcharts.Highcharts.charts.length; i += 1) {
    const chart = ReactHighcharts.Highcharts.charts[i];
    if (chart) {
      // Find coordinates within the chart
      const event = chart.pointer.normalize(e);
      // Get the hovered point
      const point = chart.series[0].searchPoint(event, true);

      if (point) {
        point.highlight(e);
      }
    }
  }
}

syncExtremes(e) {
  const thisChart = this.chart;

  if (e.trigger !== 'syncExtremes') { // Prevent feedback loop
    ReactHighcharts.Highcharts.each(ReactHighcharts.Highcharts.charts, (chart) => {
      if (chart !== thisChart) {
        if (chart.xAxis[0].setExtremes) { // It is null while updating
          chart.xAxis[0].setExtremes(
            e.min,
            e.max,
            undefined,
            false,
            { trigger: 'syncExtremes' },
          );
        }
      }
    });
  }
}

现在当我将鼠标悬停在它给出错误的点上时:

但不知何故它适用于第二个图表,如果我将鼠标悬停在第二个图表点上,它会在两个图表上显示工具提示。不适用于第一个图表。加上第一个图表有两个系列。我离解决方案越来越近了。

编辑 2:解决方案 我弄清楚是什么导致工具提示仅在将鼠标悬停在第二个图表上时才同步。这是由于控制台错误,它破坏了代码(handleMouseMove() 内的 For 循环)。所以在将该错误放入 try catch 后,它解决了问题。

 if (point) {
   try {
     point.highlight(e);
   } catch (err) {
      // pass;
   }
 }

这不是最好的方法,但很管用。现在唯一的问题是,第一个图表有两条系列线(检查上图),只有第一个有活动圈,第二个没有。

编辑 3:突出显示多个系列的解决方案。

阅读代码后,我发现这一行,它只导致第一个系列突出显示点:

point = chart.series[0].searchPoint(event, true)

这条线路只走第一个系列。错误的代码。应该是:

chart.series.forEach(series => {
    const point = series.searchPoint(event, true);
    if (point) {
        try {
            point.highlight(e);
        } catch (err) {
            // pass;
        }
    }
});

现在唯一的问题是这个 try catch 没有得到 Can not read property category of undefined

我建议您使用 highcharts-react-official 包装器。您可以在下面找到同步图表的示例:

import React from "react";
import { render } from "react-dom";
// Import Highcharts
import Highcharts from "highcharts/highstock";
//import HighchartsReact from "./HighchartsReact.min.js";
import HighchartsReact from "highcharts-react-official";

(function(H) {
  H.Pointer.prototype.reset = function() {
    return undefined;
  };

  /**
   * Highlight a point by showing tooltip, setting hover state and draw crosshair
   */
  H.Point.prototype.highlight = function(event) {
    event = this.series.chart.pointer.normalize(event);
    this.onMouseOver(); // Show the hover marker
    this.series.chart.tooltip.refresh(this); // Show the tooltip
    this.series.chart.xAxis[0].drawCrosshair(event, this); // Show the crosshair
  };

  H.syncExtremes = function(e) {
    var thisChart = this.chart;

    if (e.trigger !== "syncExtremes") {
      // Prevent feedback loop
      Highcharts.each(Highcharts.charts, function(chart) {
        if (chart && chart !== thisChart) {
          if (chart.xAxis[0].setExtremes) {
            // It is null while updating
            chart.xAxis[0].setExtremes(e.min, e.max, undefined, false, {
              trigger: "syncExtremes"
            });
          }
        }
      });
    }
  };
})(Highcharts);

class App extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      options: {
        chart: {
          type: "line",
          zoomType: "x",
          panning: true,
          panKey: "shift"
        },
        xAxis: {
          events: {
            setExtremes: function(e) {
              Highcharts.syncExtremes(e);
            }
          }
        },
        series: [
          {
            data: [
              29.9,
              71.5,
              106.4,
              129.2,
              144.0,
              176.0,
              135.6,
              148.5,
              216.4,
              194.1,
              95.6,
              54.4
            ]
          }
        ]
      },
      options2: {
        chart: {
          zoomType: "x"
        },
        series: [
          {
            data: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
          }
        ],
        xAxis: {
          events: {
            setExtremes: function(e) {
              Highcharts.syncExtremes(e);
            }
          }
        }
      }
    };
  }

  componentDidMount() {
    ["mousemove", "touchmove", "touchstart"].forEach(function(eventType) {
      document
        .getElementById("container")
        .addEventListener(eventType, function(e) {
          var chart, point, i, event;

          for (i = 0; i < Highcharts.charts.length; i = i + 1) {
            chart = Highcharts.charts[i];
            if (chart) {
              // Find coordinates within the chart
              event = chart.pointer.normalize(e);
              // Get the hovered point
              point = chart.series[0].searchPoint(event, true);

              if (point) {
                point.highlight(e);
              }
            }
          }
        });
    });
  }

  inputChange(e) {
    this.setState({
      options: {
        series: [{ data: [1, 1, 1] }, { data: [2, 2, 2] }]
      }
    });
  }

  render() {
    return (
      <div id="container">
        <HighchartsReact
          constructorType={"chart"}
          highcharts={Highcharts}
          options={this.state.options}
        />
        <HighchartsReact
          constructorType={"chart"}
          highcharts={Highcharts}
          options={this.state.options2}
        />
      </div>
    );
  }
}

render(<App />, document.getElementById("root"));

现场演示:https://codesandbox.io/s/jl8mrq2m53