wxmp-wodeshebao/public/pages/take-photo/take-photo.js

var sysT = require('../../../tool/sys-tool.js')
var businessT = require('../../../tool/business-tool.js')

Page({

  /**
   * 页面的初始数据
   */
  data: {
    adapter: {
      suffix: '',
      cameraHeight: 0,
      viewHeight: 0,
      viewWidth: 0 
    },
  },

  toAlbum: businessT.action(function (sender) {
    wx.chooseImage({
      count: 1,
      sizeType: ['compressed'],
      sourceType: ['album'],
      success: function(res) {
        businessT.debugLog(res)
        var pages = getCurrentPages()
        pages[pages.length - 2].finishTakePhoto(res.tempFilePaths[0])
        wx.navigateBack({

        })
      },
    })
  }),

  takePhoto: businessT.action(function (sender) {
    this.ctx.takePhoto({
      quality: 'normal',
      success: (res) => {
        businessT.debugLog(res)
        businessT.debugLog(this.data.adapter)
        wx.navigateTo({
          url: '../change-photo/change-photo?path=' + res.tempImagePath + '&height=' + res.height,
        })
      }
    })
  }),

  back: businessT.action(function (sender) {
    wx.navigateBack({
      
    })
  }),

  error: function (e) {
    wx.navigateBack({

    })
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    this.ctx = wx.createCameraContext()
    sysT.adaptor()
    var cameraHeight = sysT.usableHeight(316)//相机可是高度rpx
    var widthBorder = 40 * sysT.rpxToPx()//取景框横边距
    var borderWidth = sysT.sysInfo().windowWidth - widthBorder * 2//取景框宽
    var borderHeight = borderWidth / 1.58//取景框高
    var heightBorder = (cameraHeight * sysT.rpxToPx() - borderHeight) / 2//取景框竖边距
    
    var border = 'width:' + borderWidth + 'px;height:' + borderHeight + 'px;top:' + heightBorder + 'px;left:' + widthBorder + 'px;'
    this.data.adapter = {
      suffix: sysT.suffixOfClass(),
      cameraHeight: cameraHeight,
      border: border
    }
    this.setData({
      adapter: this.data.adapter
    })
  },

  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady: function () {
  
  },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow: function () {
  
  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide: function () {
  
  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload: function () {
  
  },

  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh: function () {
  
  },

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom: function () {
  
  },

  /**
   * 用户点击右上角分享
   */
  // onShareAppMessage: function () {
  
  // }
})