index.js

// static/nativeComponents/PhotoGallery/index.js
let app = getApp()
Component({
  /**
   * 组件的属性列表
   */
  properties: {
    datas: {
      type: Object
    }
  },

  /**
   * 组件的初始数据
   */
  data: {
    getPaddingList: [{
      'name': '上',
      'value': 0
    },
    {
      'name': '下',
      'value': 0
    },
    {
      'name': '左',
      'value': 0
    },
    {
      'name': '右',
      'value': 0
    }
    ],
    imgArr : [],
    lenI : 0,
    WaterfallFlowListL : [],
    WaterfallFlowListR : []
  },
  ready(){
    if (this.data.datas.componentData.paddingList){
      this.setData({
        getPaddingList: this.data.datas.componentData.paddingList
      })
    }
    console.log(this.data.getPaddingList[2],this.data.getPaddingList[3],'--------------------45')
    if(this.data.datas.componentData.style == 'waterfall'){
      console.log(this.data.datas.componentData,'图片画廊waterfall')
      let list = this.data.datas.componentData.imgList
      let WaterfallFlowListL = []
      let WaterfallFlowListR = []

      this.setData({
        WaterfallFlowListL: [],
        WaterfallFlowListR: []
      })

      list.forEach(((item,index) => {
        if (index % 2 == 0) {
          WaterfallFlowListL.push(item)
        } else {
          WaterfallFlowListR.push(item)
        }
      }))

      this.setData({
        ['WaterfallFlowListL']: WaterfallFlowListL,
        ['WaterfallFlowListR']: WaterfallFlowListR
      })

      console.log(this.data.WaterfallFlowListL,this.data.WaterfallFlowListR,'图片画廊数据')

    }


    this.data.datas.componentData.imgList.forEach((item,index) => {
      this.setData({
        ['imgArr[' + index + '].width'] : '',
        ['imgArr[' + index + '].height']: ''
      })
    })
  },

  /**
   * 组件的方法列表
   */
  methods: {
    itemClick(e){
      let item = e.currentTarget.dataset.item
      app.trackCpn(e, this.data.datas.componentName, item)
      app.$themeToLink(item.link)
    },
    bindload(e){
      console.log(e,'宽高')

      let index = e.currentTarget.dataset.index;
      let width = e.detail.width
      let height = e.detail.height

      console.log(index,width,height)

      this.setData({
        lenI : this.data.lenI + 1
      })

      this.setData({
        ['imgArr[' + index + '].width']: width,
        ['imgArr[' + index + '].height']: height
      })

      if (this.data.lenI == this.data.datas.componentData.imgList.length){
          let countWidth = 0;
          this.data.imgArr.forEach(item => {
            countWidth += Number(item.width)
          })

        console.log(countWidth,'countWidth')

        const res = wx.getSystemInfoSync()

        let getPaddingListLeft = this.data.getPaddingList[2].value;
        let getPaddingListRight = this.data.getPaddingList[3].value;
        console.log(getPaddingListLeft,getPaddingListRight,'---getPaddingListRight')
        let b = countWidth / (res.windowWidth - getPaddingListLeft - getPaddingListRight)

        console.log(b,'nnnnn')

        this.data.imgArr.forEach((it,ii) => {
          this.setData({
            ['imgArr[' + ii + '].width']: Math.ceil(it.width / b) ,
            ['imgArr[' + ii + '].height']: Math.ceil(it.height /b)
          })
        })
      }

    }
  }
})