如何更改 c3js 中的工具提示内容 [英] How to change tooltip content in c3js

问题描述

我正在处理时间线显示，并且我有要在工具提示上显示的数据.目前它只显示每次的价值.我找不到改变它的方法.下面的示例显示了如何更改值的格式，但不显示显示的值

I'm working on a timeline display and I have data that I want to show on the tooltip. currently it only shows the value at each time. and I cannot find a way to change it. the example below shows how to change the value's format but not what values are displayed

var chart = c3.generate({
data: {
    columns: [
        ['data1', 30000, 20000, 10000, 40000, 15000, 250000],
        ['data2', 100, 200, 100, 40, 150, 250]
    ],
    axes: {
        data2: 'y2'
    }
},
axis : {
    y : {
        tick: {
            format: d3.format("s")
        }
    },
    y2: {
        show: true,
        tick: {
            format: d3.format("$")
        }
    }
},
tooltip: {
    format: {
        title: function (d) { return 'Data ' + d; },
        value: function (value, ratio, id) {
            var format = id === 'data1' ? d3.format(',') : d3.format('$');
            return format(value);
        }
           //value: d3.format(',') // apply this format to both y and y2
    }
}
});

它取自 http://c3js.org/samples/tooltip_format.html他们确实承认没有内容编辑的示例，但我在参考资料或论坛中找不到任何内容，但建议更改代码(在这里:https://github.com/masayuki0812/c3/blob/master/c3.js 在第 300 行)及以下:

it's taken from http://c3js.org/samples/tooltip_format.html they do admit that there isn't an example for content editing but I couldn't find anything in the reference or forums, but a suggestion to change the code (it's here: https://github.com/masayuki0812/c3/blob/master/c3.js in line 300) and below:

__tooltip_contents = getConfig(['tooltip', 'contents'], function (d, defaultTitleFormat, defaultValueFormat, color) {
        var titleFormat = __tooltip_format_title ? __tooltip_format_title : defaultTitleFormat,
            nameFormat = __tooltip_format_name ? __tooltip_format_name : function (name) { return name; },
            valueFormat = __tooltip_format_value ? __tooltip_format_value : defaultValueFormat,
            text, i, title, value, name, bgcolor;
        for (i = 0; i < d.length; i++) {
            if (! (d[i] && (d[i].value || d[i].value === 0))) { continue; }

            if (! text) {
                title = titleFormat ? titleFormat(d[i].x) : d[i].x;
                text = "<table class='" + CLASS.tooltip + "'>" + (title || title === 0 ? "<tr><th colspan='2'>" + title + "</th></tr>" : "");
            }

            name = nameFormat(d[i].name);
            value = valueFormat(d[i].value, d[i].ratio, d[i].id, d[i].index);
            bgcolor = levelColor ? levelColor(d[i].value) : color(d[i].id);

            text += "<tr class='" + CLASS.tooltipName + "-" + d[i].id + "'>";
            text += "<td class='name'><span style='background-color:" + bgcolor + "'></span>" + name + "</td>";
            text += "<td class='value'>" + value + "</td>";
            text += "</tr>";
        }
        return text + "</table>";
    })

有人尝试过吗?开发了一些功能来促进这个过程?对如何正确执行此操作有任何提示吗?我不知道如何以一种可以使用更多数据或与函数获得的 d 值不同的数据的方式更改他们的代码.

did anyone attempted to do so? developed some function to facilitate the process? have any tips on how to do so correctly? I do not know how to change their code in a way I could use more data or data different than the d value the function gets.

推荐答案

如果您使用 https://github.com/masayuki0812/c3/blob/master/src/tooltip.js#L27 并将其添加到图表声明中，在 tooltip.contents 中，您将具有与默认内容相同的工具提示内容.

If you use the function getTooltipContent from https://github.com/masayuki0812/c3/blob/master/src/tooltip.js#L27 and add it in the chart declaration, in tooltip.contents, you'll have the same tooltip content that the default one.

您可以更改此代码并根据需要对其进行自定义.一个细节，由于 CLASS 在当前范围内没有定义，但它是零件图对象，我用 CLASS 代替 $$.CLASS，也许你甚至不需要在你的代码中使用这个对象.

You can make changes on this code and customize it as you like. One detail, as CLASS is not defined in the current scope, but it's part chart object, I substituted CLASS for $$.CLASS, maybe you don't even need this Object in your code.

var chart = c3.generate({
  /*...*/
  tooltip: {
      format: {
        /*...*/
      },
      contents: function (d, defaultTitleFormat, defaultValueFormat, color) {
          var $$ = this, config = $$.config,
              titleFormat = config.tooltip_format_title || defaultTitleFormat,
              nameFormat = config.tooltip_format_name || function (name) { return name; },
              valueFormat = config.tooltip_format_value || defaultValueFormat,
              text, i, title, value, name, bgcolor;
          for (i = 0; i < d.length; i++) {
              if (! (d[i] && (d[i].value || d[i].value === 0))) { continue; }

              if (! text) {
                  title = titleFormat ? titleFormat(d[i].x) : d[i].x;
                  text = "<table class='" + $$.CLASS.tooltip + "'>" + (title || title === 0 ? "<tr><th colspan='2'>" + title + "</th></tr>" : "");
              }

              name = nameFormat(d[i].name);
              value = valueFormat(d[i].value, d[i].ratio, d[i].id, d[i].index);
              bgcolor = $$.levelColor ? $$.levelColor(d[i].value) : color(d[i].id);

              text += "<tr class='" + $$.CLASS.tooltipName + "-" + d[i].id + "'>";
              text += "<td class='name'><span style='background-color:" + bgcolor + "'></span>" + name + "</td>";
              text += "<td class='value'>" + value + "</td>";
              text += "</tr>";
          }
          return text + "</table>";
      }
  }
});

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