medical/node_modules/echarts/lib/component/gridSimple.js

var echarts = require("../echarts");

var zrUtil = require("zrender/lib/core/util");

var graphic = require("../util/graphic");

require("../coord/cartesian/Grid");

require("./axis");

// Grid view
echarts.extendComponentView({
  type: 'grid',
  render: function (gridModel, ecModel) {
    this.group.removeAll();

    if (gridModel.get('show')) {
      this.group.add(new graphic.Rect({
        shape: gridModel.coordinateSystem.getRect(),
        style: zrUtil.defaults({
          fill: gridModel.get('backgroundColor')
        }, gridModel.getItemStyle()),
        silent: true,
        z2: -1
      }));
    }
  }
});
echarts.registerPreprocessor(function (option) {
  // Only create grid when need
  if (option.xAxis && option.yAxis && !option.grid) {
    option.grid = {};
  }
});