public/examples/ts/bar-label-rotation.ts

/*
title: Bar Label Rotation
titleCN: 柱状图标签旋转
category: bar
difficulty: 3
*/

const posList = [
  'left',
  'right',
  'top',
  'bottom',
  'inside',
  'insideTop',
  'insideLeft',
  'insideRight',
  'insideBottom',
  'insideTopLeft',
  'insideTopRight',
  'insideBottomLeft',
  'insideBottomRight'
] as const;

app.configParameters = {
  rotate: {
    min: -90,
    max: 90
  },
  align: {
    options: {
      left: 'left',
      center: 'center',
      right: 'right'
    }
  },
  verticalAlign: {
    options: {
      top: 'top',
      middle: 'middle',
      bottom: 'bottom'
    }
  },
  position: {
    options: posList.reduce(function (map, pos) {
      map[pos] = pos;
      return map;
    }, {} as Record<string, string>)
  },
  distance: {
    min: 0,
    max: 100
  }
};

app.config = {
  rotate: 90,
  align: 'left',
  verticalAlign: 'middle',
  position: 'insideBottom',
  distance: 15,
  onChange: function () {
    const labelOption: BarLabelOption = {
      rotate: app.config.rotate as BarLabelOption['rotate'],
      align: app.config.align as BarLabelOption['align'],
      verticalAlign: app.config
        .verticalAlign as BarLabelOption['verticalAlign'],
      position: app.config.position as BarLabelOption['position'],
      distance: app.config.distance as BarLabelOption['distance']
    };
    myChart.setOption<echarts.EChartsOption>({
      series: [
        {
          label: labelOption
        },
        {
          label: labelOption
        },
        {
          label: labelOption
        },
        {
          label: labelOption
        }
      ]
    });
  }
};

type BarLabelOption = NonNullable<echarts.BarSeriesOption['label']>;

const labelOption: BarLabelOption = {
  show: true,
  position: app.config.position as BarLabelOption['position'],
  distance: app.config.distance as BarLabelOption['distance'],
  align: app.config.align as BarLabelOption['align'],
  verticalAlign: app.config.verticalAlign as BarLabelOption['verticalAlign'],
  rotate: app.config.rotate as BarLabelOption['rotate'],
  formatter: '{c}  {name|{a}}',
  fontSize: 16,
  rich: {
    name: {}
  }
};

option = {
  tooltip: {
    trigger: 'axis',
    axisPointer: {
      type: 'shadow'
    }
  },
  legend: {
    data: ['Forest', 'Steppe', 'Desert', 'Wetland']
  },
  toolbox: {
    show: true,
    orient: 'vertical',
    left: 'right',
    top: 'center',
    feature: {
      mark: { show: true },
      dataView: { show: true, readOnly: false },
      magicType: { show: true, type: ['line', 'bar', 'stack'] },
      restore: { show: true },
      saveAsImage: { show: true }
    }
  },
  xAxis: [
    {
      type: 'category',
      axisTick: { show: false },
      data: ['2012', '2013', '2014', '2015', '2016']
    }
  ],
  yAxis: [
    {
      type: 'value'
    }
  ],
  series: [
    {
      name: 'Forest',
      type: 'bar',
      barGap: 0,
      label: labelOption,
      emphasis: {
        focus: 'series'
      },
      data: [320, 332, 301, 334, 390]
    },
    {
      name: 'Steppe',
      type: 'bar',
      label: labelOption,
      emphasis: {
        focus: 'series'
      },
      data: [220, 182, 191, 234, 290]
    },
    {
      name: 'Desert',
      type: 'bar',
      label: labelOption,
      emphasis: {
        focus: 'series'
      },
      data: [150, 232, 201, 154, 190]
    },
    {
      name: 'Wetland',
      type: 'bar',
      label: labelOption,
      emphasis: {
        focus: 'series'
      },
      data: [98, 77, 101, 99, 40]
    }
  ]
};

export {};