test/pages/user/cartlist/list.js

// pages/user/cartlist/list.js
const device = wx.getSystemInfoSync(),
    rect = wx.getMenuButtonBoundingClientRect(); // 获取设备信息
const ratio = 750 / device.windowWidth;
console.log(rect)
const width = device.windowWidth // 示例为一个与屏幕等宽的正方形裁剪框
let height = device.windowHeight;
import commonApi from "../../../utils/https/common"
import util from '../../../utils/util'
let app = getApp()
Page({

    /**
     * 页面的初始数据
     */
    data: {
        menuWidth: width - rect.right + rect.width + 6,
        list: [],
        allChecked: false,
        allPrice: 0,
        productType: '',
        manageFlag: false,
        flag: false, //判断订单是否同时有商品和票
        isCar: 'single', //判断是否购物车
        showQrCode: false,
        wxqrcode: null,
        showModel:false
    },

    /**
     * 生命周期函数--监听页面加载
     */
    onLoad: function (options) {
        wx.removeStorageSync('linkMan')
        this.getList();
    },
    manage: function () {
        let list = this.data.list;
        list.map(item => {
            item.checked = 0;
        })
        this.setData({
            manageFlag: !this.data.manageFlag,
            allChecked: 0,
            list: list,
            allPrice: 0
        })
    },
    gotoDetail: function (e) {
        console.log(e)
        let item = e.currentTarget.dataset.item.product;
        util.gotoDetail(item, 1);
    },
    getList: function () {
        commonApi.user_post("cart/get_list", {
            // type: '1'
        }).then(res => {
            this.setData({
                list: res.data
            })
        })
    },
    minus: function (e) {
        let index = e.currentTarget.dataset.index,
            list = this.data.list;
        let num = list[index].num;
        if (num <= 1) return;
        num = num - 1;
        list[index].num = num;
        this.setData({
            list: list
        })
        this.changeNumber(list[index])
        this.updatePrice()
    },
    add: function (e) {
        let index = e.currentTarget.dataset.index,
            list = this.data.list;
        let num = list[index].num + 1;
        list[index].num = num;
        this.setData({
            list: list
        })
        this.changeNumber(list[index])
        this.updatePrice()
    },
    select: function (e) {
        let index = e.currentTarget.dataset.index,
            list = this.data.list;
        if (list[index].product.flag != 1 || list[index].sku.flag != 'on') {
            if (!this.data.manageFlag) {
                wx.showToast({
                    title: '产品已下架',
                    icon: 'none'
                })
                return;
            }
        }
        list[index].checked = list[index].checked ? false : true;
        this.setData({
            list: list
        })
        let flag = true
        list.forEach(item => {
            if (!item.checked) {
                flag = false
                return
            }
        });
        this.setData({
            allChecked: flag
        })
        this.updatePrice()
    },
    selectAll: function () {
        let list = this.data.list,
            allChecked = this.data.allChecked ? false : true;
        list.map(item => {
            if (item.sku.flag == 'on' && item.product.flag == 1) {
                item.checked = allChecked;
            }
        })
        this.setData({
            allChecked: allChecked,
            list: list
        })
        this.updatePrice()
    },
    changeNumber(item) {
        commonApi.user_post("cart/update_sku", {
            sku_id: item.sku.id,
            num: item.num
        }).then(res => { })
    },
    updatePrice: function () {
        let list = this.data.list,
            price = 0;
        list.map(item => {
            if (item.checked) {
                price = price + item.sku.price * item.num;
            }
        })
        this.setData({
            allPrice: price
        })
    },
    order: function () {
        commonApi.user_post('wx/get_user_keep', {
            jumpurl: '/pages/user/cartlist/list',
            title: '购物车',
            type: 'mini'
        }).then(res => {
            if (res.data.subscribe == 0) {
                this.setData({
                    wxqrcode: res.data.qrcode,
                    showQrCode: true
                })
            } else {
                app.globalData.couponInfo = null;
                util.pagePoint({
                    event: 'cart_order'
                }, 1)
                let list = this.data.list,
                    price = 0,
                    product = [],
                    product1 = []
                list.map(item => {
                    if (item.checked) {
                        // item.product.type="post";
                        if (item.product.type == 'post') {
                            product.push({
                                product: item.product,
                                sku: item.sku,
                                productNum: item.num
                            })
                        } else {
                            product1.push(item)
                            app.globalData.list = product1
                        }
                        if (item.product.type.includes('post')) {
                            this.data.productType = 'post'
                        }
                    }
                })
                if (product.length == 0 && product1.length == 0) {
                    wx.showToast({
                        title: '请先选择产品',
                        icon: 'none'
                    })
                    return;
                }
                if (product.length > 0 && product1.length > 0) {
                    this.setData({
                        flag: 'mix',
                        isCar: 'multiple'
                    })
                }
                if (product1.length > 1) {
                    this.setData({
                        isCar: 'multiple'
                    })
                } else {
                    this.setData({
                        isCar: 'single'
                    })
                }
                console.log(product1);
                app.globalData.postProduct = product;
                if (app.globalData.list) {
                    app.globalData.product = app.globalData.list[app.globalData.index]
                }
                if (this.data.productType == 'post') {
                    console.log(this.data.flag);
                    wx.navigateTo({
                        url: '/pages/order/postOrder/index?from=cart&flag=' + this.data.flag,
                    })
                } else {
                    wx.navigateTo({
                        url: '/subPackages/gwcOrder/index?isCar=' + this.data.isCar,
                    })
                }
            }
        })

    },
  checkOrder(){
        console.log(this.data.list);
        let list = this.data.list,product = []
        list.map(item => {
          if (item.checked) {
            product.push(item)
          }
      })
      app.globalData.listName = 'car'
      if (product.length>1) {
        this.setData({
          showModel:true
        })
      }else{
        this.order()
      }
    },
    closeModel(){
      this.setData({
        showModel:false
      })
    },
    touchStart(e) { //移动前点击的位置
        console.log(e)
        // 在开始触摸时将所有startTouchMove设置为flase,对当前的为true
        this.data.list.forEach(cart => {
            if (cart.isTouchMove) //当istouchMove为true
                cart.isTouchMove = false; //其它的对象都为false
        })
        this.setData({
            startX: e.changedTouches[0].clientX,
            startY: e.changedTouches[0].clientY,
            list: this.data.list
        })
    },
    touchmove(e) { //移动的位置,用于计算用户滑动的弧度向左还是向右,移动了多少,可以确定删除功能的显示和隐藏
        let index = e.currentTarget.dataset.index;
        // 获取开始的x,y坐标
        let startX = this.data.startX,
            startY = this.data.startY;
        // 获取移动的x,x坐标
        let touchMoveX = e.changedTouches[0].clientX,
            touchMoveY = e.changedTouches[0].clientY;
        // 调用计算角度的方法,获取角度
        var angel = this.angel({
            X: startX,
            Y: startY
        }, {
            X: touchMoveX,
            Y: touchMoveY
        })
        // 遍历cartArray
        this.data.list.forEach((cart, i) => {
            cart.isTouchMove = false;
            // 滑动角度大于30,直接return 视为非滑动意思
            if (Math.abs(angel) > 30) return;
            // 匹配当前所点击的list和滑动的list
            if (i == index) {
                // 匹配上后判断滑动方向
                if (touchMoveX > startX) { //左滑动隐藏删除
                    cart.isTouchMove = false;
                } else {
                    cart.isTouchMove = true;
                }
            }
        })
        // 更新数据
        this.setData({
            list: this.data.list
        })
    },
    angel(start, end) { //计算滑动的角度 
        // console.log(start,end)
        // 移动坐标减去对应的开始坐标
        var _X = end.X - start.X,
            _Y = end.Y - start.Y;
        // 返回角度 Math.atan() 返回数字的正切值
        return 360 * Math.atan(_Y / _X) / (2 * Math.PI)
    },
    del: function (e) {
        let index = e.currentTarget.dataset.index,
            list = this.data.list;
        commonApi.user_post("cart/del_sku", {
            sku_id: list[index].sku_id
        }).then(res => {
            if (res.code == 1) {
                wx.showToast({
                    title: '删除成功',
                    icon: "success"
                })
                list.splice(index, 1);
                this.setData({
                    list: list
                })
            }
        })
    },
    delM() {
        let that = this
        let arr = this.data.list
        let suid = []
        arr.forEach(item => {
            if (item.checked) {
                suid.push(item.sku_id)
            }
        });
        let skuids = suid.join(',')
        wx.showModal({
            title: '提示',
            content: '确定要删除选定的产品？',
            success: function (res) {
                if (res.confirm) {
                    commonApi.user_post("cart/del_sku", {
                        sku_id: skuids
                    }).then(res => {
                        if (res.code == 1) {
                            wx.showToast({
                                title: '删除成功',
                                icon: "success"
                            })
                            that.getList();
                        }
                    })

                } else {
                    console.log('取消')
                }
            }
        })
    },
    /**
     * 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 () {
        util.pagePoint({
            event: 'cart_view'
        }, 1)
        app.globalData.list = null
        app.globalData.createDate = null
        app.globalData.index = 0
        app.globalData.productPrice = 0
        app.globalData.ticketPrice = 0
        this.data.productType = ''
    },

    /**
     * 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 () {

    }
})