更改颜色文字甘特图谷歌（javascript）没有CSS

时间：2017-08-04 14:13:18

标签： javascript svg google-visualization

如何在不使用或更改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，只会更改与之关联的文本。

    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>

1 个答案:

答案 0 :(得分：0)

根据configuration options，使用选项 - ＆gt; ctx.setTransform(1,0,0,1,0,0); 

gantt.labelStyle

虽然gantt: { labelStyle: { color: '#ff0000', fontName: 'Arial', fontSize: 20 } } ＆amp; fontName似乎正常工作，
fontSize没有...

请注意以下工作代码段中的颜色不会改变... 

color
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);
}

一个选项是使用脚本

手动更改颜色

首先，需要从底部日期标签中识别行标签 为此，请测试<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>的数据表列中存在的标签值 使用数据表方法 - ＆gt; 'Task Name'

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

因此，需要使用getFilteredRows或其他东西，
保持新的颜色

请参阅以下工作代码段... 

MutationObserver
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);
}

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