miniprogram/ec-canvas/ec-canvas.js

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import WxCanvas from './wx-canvas';
import * as echarts from './echarts';

let ctx;

function compareVersion(v1, v2) {
  v1 = v1.split('.')
  v2 = v2.split('.')
  const len = Math.max(v1.length, v2.length)

  while (v1.length < len) {
    v1.push('0')
  }
  while (v2.length < len) {
    v2.push('0')
  }

  for (let i = 0; i < len; i++) {
    const num1 = parseInt(v1[i])
    const num2 = parseInt(v2[i])

    if (num1 > num2) {
      return 1
    } else if (num1 < num2) {
      return -1
    }
  }
  return 0
}

Component({
  properties: {
    canvasId: {
      type: String,
      value: 'ec-canvas'
    },

    ec: {
      type: Object
    },

    forceUseOldCanvas: {
      type: Boolean,
      value: false
    }
  },

  data: {
    isUseNewCanvas: false
  },

  ready: function () {
    // Disable prograssive because drawImage doesn't support DOM as parameter
    // See https://developers.weixin.qq.com/miniprogram/dev/api/canvas/CanvasContext.drawImage.html
    echarts.registerPreprocessor(option => {
      if (option && option.series) {
        if (option.series.length > 0) {
          option.series.forEach(series => {
            series.progressive = 0;
          });