@alicloud/cloud-charts/es/Whistogram/index.js


'use strict';

import _inheritsLoose from "@babel/runtime/helpers/inheritsLoose";
import { View } from '@antv/data-set/lib/view';
import '@antv/data-set/lib/api/statistics';
import '@antv/data-set/lib/transform/bin/histogram';
import Base from '../common/Base';
import errorWrap from '../common/errorWrap';
import themes from '../themes/index';
import { propertyAssign, propertyMap } from '../common/common';
import rectXAxis from '../common/rectXAxis';
import rectYAxis from '../common/rectYAxis';
import rectLegend from '../common/rectLegend';
import rectTooltip from '../common/rectTooltip';
import guide from '../common/guide';
import label from '../common/label';
import legendFilter from '../common/legendFilter';
import geomStyle from '../common/geomStyle';
import { activeRegionWithTheme } from '../common/interaction'; // 3.x代码

export var Histogram = /*#__PURE__*/function (_Base) {
  _inheritsLoose(Histogram, _Base);

  function Histogram() {
    var _this;

    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    _this = _Base.call.apply(_Base, [this].concat(args)) || this;
    _this.chartName = 'G2Histogram';
    return _this;
  }

  var _proto = Histogram.prototype;

  _proto.getDefaultConfig = function getDefaultConfig() {
    return {
      colors: themes.category_12,
      xAxis: {
        // type: "cat",
        labelFormatter: null,
        // 可以强制覆盖，手动设置label
        categories: null,
        autoRotate: false // 坐标轴粒度
        // tickInterval: 1,

      },
      yAxis: {
        labelFormatter: null,
        // 可以强制覆盖，手动设置label
        max: null,
        min: null
      },
      legend: {
        align: "left",
        nameFormatter: null // 可以强制覆盖，手动设置label

      },
      tooltip: {
        titleFormatter: null,
        nameFormatter: null,
        valueFormatter: null
      },
      grid: false,
      label: false,
      // 分箱粒度
      bin: {
        // bins: 10, // 分箱个数
        binWidth: 1,
        // 分箱步长（会覆盖bins的配置）
        offset: 0
      },
      column: true,
      // 是否归一化
      normalize: false
    };
  };

  _proto.init = function init(chart, config, data) {
    var defs = {
      x: propertyAssign(propertyMap.axis, {
        range: [0, 1]
      }, config.xAxis),
      y: propertyAssign(propertyMap.axis, {
        type: 'linear',
        nice: true // tickCount: 5,

      }, config.yAxis),
      type: {
        type: 'cat'
      }
    };
    var dataView = computerData(config, data);
    chart.scale(defs);
    chart.data(dataView.rows); // 设置X轴

    rectXAxis(this, chart, config); // 设置单个Y轴

    rectYAxis(this, chart, config); // 设置图例

    rectLegend(this, chart, config, null, false, "type");
    legendFilter(this, chart); // tooltip

    rectTooltip(this, chart, config, {
      position: 'top',
      shared: true,
      showMarkers: false
    }, null, {
      position: 'top',
      shared: true,
      showMarkers: false
    }); // 绘制辅助线，辅助背景区域

    guide(chart, config); // 设置坐标系：极坐标/直角坐标

    var chartCoord = config.polar ? chart.coordinate("polar", {
      innerRadius: config.innerRadius || 0
    }) : chart.coordinate(); // 横向柱状图

    if (!config.column) {
      chartCoord.transpose();
    }

    activeRegionWithTheme(chart);
    drawHist(chart, config);
  };

  _proto.changeData = function changeData(chart, config, data) {
    var dataView = computerData(config, data);
    chart && chart.changeData(dataView.rows);
  };

  return Histogram;
}(Base);

function drawHist(chart, config, field) {
  if (field === void 0) {
    field = "type";
  }

  var colors = config.colors;
  var geom = chart.interval().position('x*y').color(field, colors).adjust('stack');
  geomStyle(geom, config.geomStyle);
  label({
    geom: geom,
    config: config
  });
}

function computerData(config, data) {
  var _config$bin = config.bin,
      bins = _config$bin.bins,
      binWidth = _config$bin.binWidth,
      offset = _config$bin.offset;
  var dv = new View().source(data);
  dv.transform({
    type: 'bin.histogram',
    field: 'x',
    bins: bins,
    binWidth: binWidth,
    offset: offset,
    groupBy: ['type', 'visible'],
    as: ['x', 'y']
  });

  if (config.normalize) {
    var total = dv.rows.reduce(function (acc, cur) {
      return acc + cur.y;
    }, 0);
    dv.transform({
      type: 'map',
      callback: function callback(row) {
        row.y = row.y / total;
        return row;
      }
    });
  }

  return dv;
}

var Whistogram = errorWrap(Histogram);
export default Whistogram;