在没有 CSS 的情况下更改颜色文本甘特图 google ( javascript ) [英] Change color text gantt chart google ( javascript ) without CSS

问题描述

如何在不使用或插入 css 的情况下更改左侧文本颜色?此代码与文档相同.我知道颜色取决于资源.我不会更改活动栏的颜色，而只会更改与其关联的文本.

How can i change the left text color without use or insert a css ? This code is the same as documentation. I know colors depend on resources. I would not change the colors of the activity bars but only the text associated with it.

    google.charts.load('current', {'packages':['gantt']});
    google.charts.setOnLoadCallback(drawChart);

    function drawChart() {

      var data = new google.visualization.DataTable();
      data.addColumn('string', 'Task ID');
      data.addColumn('string', 'Task Name');
      data.addColumn('string', 'Resource');
      data.addColumn('date', 'Start Date');
      data.addColumn('date', 'End Date');
      data.addColumn('number', 'Duration');
      data.addColumn('number', 'Percent Complete');
      data.addColumn('string', 'Dependencies');

      data.addRows([
        ['2014Spring', 'Spring 2014', 'spring',
         new Date(2014, 2, 22), new Date(2014, 5, 20), null, 100, null],
        ['2014Summer', 'Summer 2014', 'summer',
         new Date(2014, 5, 21), new Date(2014, 8, 20), null, 100, null],
        ['2014Autumn', 'Autumn 2014', 'autumn',
         new Date(2014, 8, 21), new Date(2014, 11, 20), null, 100, null],
        ['2014Winter', 'Winter 2014', 'winter',
         new Date(2014, 11, 21), new Date(2015, 2, 21), null, 100, null],
        ['2015Spring', 'Spring 2015', 'spring',
         new Date(2015, 2, 22), new Date(2015, 5, 20), null, 50, null],
        ['2015Summer', 'Summer 2015', 'summer',
         new Date(2015, 5, 21), new Date(2015, 8, 20), null, 0, null],
        ['2015Autumn', 'Autumn 2015', 'autumn',
         new Date(2015, 8, 21), new Date(2015, 11, 20), null, 0, null],
        ['2015Winter', 'Winter 2015', 'winter',
         new Date(2015, 11, 21), new Date(2016, 2, 21), null, 0, null],
        ['Football', 'Football Season', 'sports',
         new Date(2014, 8, 4), new Date(2015, 1, 1), null, 100, null],
        ['Baseball', 'Baseball Season', 'sports',
         new Date(2015, 2, 31), new Date(2015, 9, 20), null, 14, null],
        ['Basketball', 'Basketball Season', 'sports',
         new Date(2014, 9, 28), new Date(2015, 5, 20), null, 86, null],
        ['Hockey', 'Hockey Season', 'sports',
         new Date(2014, 9, 8), new Date(2015, 5, 21), null, 89, null]
      ]);

      var options = {
        height: 400,
        gantt: {
          trackHeight: 30
        }
      };

      var chart = new google.visualization.Gantt(document.getElementById('chart_div'));

      chart.draw(data, options);
    }

<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart_div"></div>

推荐答案

根据 配置选项，使用选项 --> gantt.labelStyle

according to the configuration options, use option --> gantt.labelStyle

gantt: {
  labelStyle: {
    color: '#ff0000',
    fontName: 'Arial',
    fontSize: 20
  }
}

虽然 fontName &fontSize 似乎工作正常，
color 不...

although fontName & fontSize appear to work properly,
color does not...

请注意以下工作片段中的颜色没有改变...

notice the color doesn't change in the following working snippet...

google.charts.load('current', {
  callback: drawChart,
  packages: ['gantt']
});

function drawChart() {
  var data = new google.visualization.DataTable();
  data.addColumn('string', 'Task ID');
  data.addColumn('string', 'Task Name');
  data.addColumn('string', 'Resource');
  data.addColumn('date', 'Start Date');
  data.addColumn('date', 'End Date');
  data.addColumn('number', 'Duration');
  data.addColumn('number', 'Percent Complete');
  data.addColumn('string', 'Dependencies');

  data.addRows([
    ['2014Spring', 'Spring 2014', 'spring',
     new Date(2014, 2, 22), new Date(2014, 5, 20), null, 100, null],
    ['2014Summer', 'Summer 2014', 'summer',
     new Date(2014, 5, 21), new Date(2014, 8, 20), null, 100, null],
    ['2014Autumn', 'Autumn 2014', 'autumn',
     new Date(2014, 8, 21), new Date(2014, 11, 20), null, 100, null],
    ['2014Winter', 'Winter 2014', 'winter',
     new Date(2014, 11, 21), new Date(2015, 2, 21), null, 100, null],
    ['2015Spring', 'Spring 2015', 'spring',
     new Date(2015, 2, 22), new Date(2015, 5, 20), null, 50, null],
    ['2015Summer', 'Summer 2015', 'summer',
     new Date(2015, 5, 21), new Date(2015, 8, 20), null, 0, null],
    ['2015Autumn', 'Autumn 2015', 'autumn',
     new Date(2015, 8, 21), new Date(2015, 11, 20), null, 0, null],
    ['2015Winter', 'Winter 2015', 'winter',
     new Date(2015, 11, 21), new Date(2016, 2, 21), null, 0, null],
    ['Football', 'Football Season', 'sports',
     new Date(2014, 8, 4), new Date(2015, 1, 1), null, 100, null],
    ['Baseball', 'Baseball Season', 'sports',
     new Date(2015, 2, 31), new Date(2015, 9, 20), null, 14, null],
    ['Basketball', 'Basketball Season', 'sports',
     new Date(2014, 9, 28), new Date(2015, 5, 20), null, 86, null],
    ['Hockey', 'Hockey Season', 'sports',
     new Date(2014, 9, 8), new Date(2015, 5, 21), null, 89, null]
  ]);

  var options = {
    height: 400,
    gantt: {
      trackHeight: 30,
      labelStyle: {
        color: '#ff0000',
        fontName: 'Arial',
        fontSize: 20
      }
    }
  };

  var container = document.getElementById('chart_div');
  var chart = new google.visualization.Gantt(container);
  chart.draw(data, options);
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart_div"></div>

一种选择是使用脚本手动更改颜色

one option would be to change the color manually using script

首先，需要从底部日期标签中识别行标签
为此，请测试 'Task Name'
的数据表列中是否存在标签值使用数据表方法 --> getFilteredRows

first, need to identify the row labels from the bottom date labels
to do so, test the label value exists in the data table column for 'Task Name'
use data table method --> getFilteredRows

手动更改颜色的唯一问题，
图表会将颜色改回原来的颜色，
任何时候有活动，例如悬停一行和/或行标签

the only problem with changing the color manually,
the chart will change the color back to its original,
anytime there is activity, such as hovering a row and / or row label

因此，需要使用 MutationObserver 或其他东西，
保持新颜色

as such, need to use a MutationObserver, or something,
to keep the new color

请参阅以下工作片段...

see following working snippet...

google.charts.load('current', {
  callback: drawChart,
  packages: ['gantt']
});

function drawChart() {
  var data = new google.visualization.DataTable();
  data.addColumn('string', 'Task ID');
  data.addColumn('string', 'Task Name');
  data.addColumn('string', 'Resource');
  data.addColumn('date', 'Start Date');
  data.addColumn('date', 'End Date');
  data.addColumn('number', 'Duration');
  data.addColumn('number', 'Percent Complete');
  data.addColumn('string', 'Dependencies');

  data.addRows([
    ['2014Spring', 'Spring 2014', 'spring',
     new Date(2014, 2, 22), new Date(2014, 5, 20), null, 100, null],
    ['2014Summer', 'Summer 2014', 'summer',
     new Date(2014, 5, 21), new Date(2014, 8, 20), null, 100, null],
    ['2014Autumn', 'Autumn 2014', 'autumn',
     new Date(2014, 8, 21), new Date(2014, 11, 20), null, 100, null],
    ['2014Winter', 'Winter 2014', 'winter',
     new Date(2014, 11, 21), new Date(2015, 2, 21), null, 100, null],
    ['2015Spring', 'Spring 2015', 'spring',
     new Date(2015, 2, 22), new Date(2015, 5, 20), null, 50, null],
    ['2015Summer', 'Summer 2015', 'summer',
     new Date(2015, 5, 21), new Date(2015, 8, 20), null, 0, null],
    ['2015Autumn', 'Autumn 2015', 'autumn',
     new Date(2015, 8, 21), new Date(2015, 11, 20), null, 0, null],
    ['2015Winter', 'Winter 2015', 'winter',
     new Date(2015, 11, 21), new Date(2016, 2, 21), null, 0, null],
    ['Football', 'Football Season', 'sports',
     new Date(2014, 8, 4), new Date(2015, 1, 1), null, 100, null],
    ['Baseball', 'Baseball Season', 'sports',
     new Date(2015, 2, 31), new Date(2015, 9, 20), null, 14, null],
    ['Basketball', 'Basketball Season', 'sports',
     new Date(2014, 9, 28), new Date(2015, 5, 20), null, 86, null],
    ['Hockey', 'Hockey Season', 'sports',
     new Date(2014, 9, 8), new Date(2015, 5, 21), null, 89, null]
  ]);

  var options = {
    height: 400,
    gantt: {
      trackHeight: 30,
      labelStyle: {
        fontName: 'Arial',
        fontSize: 20
      }
    }
  };

  var container = document.getElementById('chart_div');
  var chart = new google.visualization.Gantt(container);

  var observer = new MutationObserver(function () {
    $.each($('text'), function (index, label) {
      var rowIndex = data.getFilteredRows([{
        column: 1,
        value: $(label).text()
      }]);
      if (rowIndex.length > 0) {
        $(label).attr('fill', '#ff0000')
      }
    });
  });
  observer.observe(container, {
    childList: true,
    subtree: true
  });

  chart.draw(data, options);
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart_div"></div>

这篇关于在没有 CSS 的情况下更改颜色文本甘特图 google ( javascript )的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！