下载highchart时需要Highchart水印图像

Question

我正在将HighCharts Javascript库用于Web应用程序。下载Highchart时需要Highchart水印图像。 我正在使用普通的hicgchart代码。 Code here

Highcharts.chart('container', {
  chart: {
    type: 'bar'
  },
  title: {
    text: 'Stacked bar chart'
  },
  xAxis: {
    categories: ['Apples', 'Oranges', 'Pears', 'Grapes', 'Bananas']
  },
  yAxis: {
    min: 0,
    title: {
      text: 'Total fruit consumption'
    }
  },
  legend: {
    reversed: true
  },
  plotOptions: {
    series: {
      stacking: 'normal'
    }
  },
  series: [{
    name: 'John',
    data: [5, 3, 4, 7, 2]
  }, {
    name: 'Jane',
    data: [2, 2, 3, 2, 1]
  }, {
    name: 'Joe',
    data: [3, 4, 4, 2, 5]
  }]
});

<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/exporting.js"></script>
<script src="https://code.highcharts.com/modules/export-data.js"></script>

<div id="container" style="min-width: 310px; max-width: 800px; height: 400px; margin: 0 auto"></div>

有什么建议吗？

Answer 1

请使用此代码

var chart = new Highcharts.Chart({

    chart: {
        renderTo: 'container',
        events: {
            load: function() {
                this.renderer.image('https://i.stack.imgur.com/E1r9X.png', 200, 20, 163, 187)
                .attr({
        	zIndex:1000  })
                  .add();
            }
        }
    },

    xAxis: {
        categories: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
    },

    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]
    }],
    
    exporting: {
        enableImages: true
    }

});

image{display:none;}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/series-label.js"></script>
<script src="https://code.highcharts.com/modules/exporting.js"></script>
<script src="https://code.highcharts.com/modules/export-data.js"></script><div id="container" style="height: 300px"></div>

Answer 2

只有在下载图片后，才可以在图片中添加水印，例如将其添加到exporting options中：

exporting: {
  chartOptions: {
    chart: {
      plotBackgroundImage: 'https://i.stack.imgur.com/E1r9X.png'
    }
  }
}

Highcharts.chart('container', {
  chart: {
    type: 'bar'
  },
  title: {
    text: 'Stacked bar chart'
  },
  xAxis: {
    categories: ['Apples', 'Oranges', 'Pears', 'Grapes', 'Bananas']
  },
  yAxis: {
    min: 0,
    title: {
      text: 'Total fruit consumption'
    }
  },
  legend: {
    reversed: true
  },
  plotOptions: {
    series: {
      stacking: 'normal'
    }
  },
  series: [{
    name: 'John',
    data: [5, 3, 4, 7, 2]
  }, {
    name: 'Jane',
    data: [2, 2, 3, 2, 1]
  }, {
    name: 'Joe',
    data: [3, 4, 4, 2, 5]
  }],
  exporting: {
    chartOptions: {
      chart: {
        plotBackgroundImage: 'https://i.stack.imgur.com/E1r9X.png'
      }
    }
  }
});

<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/exporting.js"></script>
<script src="https://code.highcharts.com/modules/export-data.js"></script>

<div id="container" style="min-width: 310px; max-width: 800px; height: 400px; margin: 0 auto"></div>

工作中的JSFiddle示例： https://jsfiddle.net/ewolden/acL4z2su/2/

Answer 3

您可以在屏幕上与图表进行交互的水印（基于先前的答案）可能来自：

//
//  add a watermark (where template is the highchart object I'm building)
//
template.chart.events = {
    load: function() {
        this.renderer.image('https://i.stack.imgur.com/E1r9X.png')
        .attr({
    zIndex:1000, x:'10%', y:'10%', width:'80%',height:'80%', style:'pointer-events:none' })
          .add();
    }
};