zh/builder/src/echarts3/model/mixin/lineStyle.js

import makeStyleMapper from './makeStyleMapper';
var getLineStyle = makeStyleMapper([['lineWidth', 'width'], ['stroke', 'color'], ['opacity'], ['shadowBlur'], ['shadowOffsetX'], ['shadowOffsetY'], ['shadowColor']]);
export default {
  getLineStyle: function (excludes) {
    var style = getLineStyle(this, excludes);
    var lineDash = this.getLineDash(style.lineWidth);
    lineDash && (style.lineDash = lineDash);
    return style;
  },
  getLineDash: function (lineWidth) {
    if (lineWidth == null) {
      lineWidth = 1;
    }

    var lineType = this.get('type');
    var dotSize = Math.max(lineWidth, 2);
    var dashSize = lineWidth * 4;
    return lineType === 'solid' || lineType == null ? null : lineType === 'dashed' ? [dashSize, dashSize] : [dotSize, dotSize];
  }
};