test/pages/info/roadInfo/index.js

// pages/info/roadInfo/index.js
let device = wx.getSystemInfoSync();
const ratio = device.windowWidth / 750;
import commonApi from "../../../utils/https/common"
import QRCode from '../../../utils/weapp-qrcode.js'
import util from '../../../utils/util'
let app = getApp()
Page({

    /**
     * 页面的初始数据
     */
    data: {
        fixed: false,
        type: 1,
        top: 0,
        info: null,
        comment: [],
        commentTotal: 0,
        retailId: "",
        retailSkuId: "",
        shareImg: null,
        showShareFlag: false,
        showQrCode: false,
        wxqrcode: null,
        ZTPoint:'',

        skuIndex: 0,
        skuFlag: false,
        producNum: 1,
    },

    /**
     * 生命周期函数--监听页面加载
     */
    onLoad: function (options) {
        let rect = wx.getMenuButtonBoundingClientRect();
        let height = (rect.top - device.statusBarHeight) * 2 + rect.height + device.statusBarHeight;
        this.setData({
            top: height,
            id: options.id
        })
        if (options.retailId) {
            this.setData({
                retailId: options.retailId
            })
        }
        if (options.ZTPoint) {this.setData({ZTPoint: options.ZTPoint})}

        let api = commonApi._post;
        if (wx.getStorageSync("jstrip_token")) {
            api = commonApi.user_post;
        }
        api("product/get_product_detail", {
            id: options.id
        }).then(res => {
            res.data.display_tags = (res.data.display_tags ? res.data.display_tags.split(",") : []).splice(0, 2);

            if (options.skuid) {
                let sku = res.data.sku.find(item => item.id == options.skuid);
                res.data.sku = [sku];
                this.setData({
                    retailSkuId: options.skuid
                })
            }
            res.data.flag = res.data.sku.find(item => item.flag == 'on') ? res.data.flag : 0

            this.setData({
                info: res.data
            })
            this.BroswerRecord()
        })
        commonApi._post("product/product_comment_list", {
            product_id: options.id,
            offset: 0,
            limit: 5
        }).then(res => {
            res.data.list.map(item => {
                item.rate = Number(item.rate)
            })
            this.setData({
                commentTotal: res.data.total,
                comment: res.data.list
            })
        })
    },
    BroswerRecord: function () {
        setTimeout(() => {
            if (app.globalData.uuid) {
                commonApi._post('browse/browse_record', {
                    type: "goods",
                    title: this.data.info.title,
                    drive: "mini",
                    source_id: this.data.info.id,
                    url: "/pages/info/cardInfo/index?id=" + this.data.info.id,
                    uuid: app.globalData.uuid
                }).then(res => {})
            } else {
                this.BroswerRecord();
            }
        }, 500)
    },
    changeMenu: function (e) {
        let index = e.currentTarget.dataset.index,
            that = this;
        const query = wx.createSelectorQuery(); //创建节点查询器
        query.select("#box" + index).boundingClientRect() //选择toViewid获取位置信息
        query.selectViewport().scrollOffset() //获取页面查询位置的
        query.exec(function (res) {
            let scrollTop = res[0].top + res[1].scrollTop - 110 * ratio - that.data.top;
            wx.pageScrollTo({
                scrollTop: scrollTop + 4,
                duration: 0
            })
            that.setData({
                type: index
            })
        })
    },
    onPageScroll: function (e) {
        let that = this,
            height = this.data.top;
        let topHeight = height;
        wx.createSelectorQuery().select('#menus').boundingClientRect(function (rect) {
            console.log(rect.top, topHeight)
            if (rect.top <= topHeight) {
                // 此时应该把menus固定在顶部
                that.setData({
                    fixed: true
                })
            } else {
                that.setData({
                    fixed: false
                })
            }
            // 滚动时判断滚动到哪个部分了
            const query = wx.createSelectorQuery(); //创建节点查询器
            query.select("#box1").boundingClientRect() //选择toViewid获取位置信息
            query.select("#box2").boundingClientRect() //选择toViewid获取位置信息
            query.select("#box3").boundingClientRect() //选择toViewid获取位置信息
            query.select("#box4").boundingClientRect() //选择toViewid获取位置信息
            let minHeight = that.data.fixed ? (110 * ratio + height) : topHeight;
            query.exec(function (res) {
                if (res[3].top < minHeight) {
                    that.setData({
                        type: 4
                    })
                } else if (res[2].top < minHeight) {
                    that.setData({
                        type: 3
                    })
                } else if (res[1].top < minHeight) {
                    that.setData({
                        type: 2
                    })
                } else {
                    that.setData({
                        type: 1
                    })
                }
            })
        }).exec()

    },
    order: function () {
        // todo 判断组合产品
        if (this.data.info.is_compose == 1) {
            // 打开规格弹窗
            this.setData({skuFlag: true})
            return
        }


        commonApi.user_post('wx/get_user_keep', {
            jumpurl: '/pages/info/roadInfo/index?id=' + this.data.id,
            title: this.data.info.title,
            type: 'mini'
        }).then(res => {
            if (res.data.subscribe == 0) {
                this.setData({
                    wxqrcode: res.data.qrcode,
                    showQrCode: true
                })
            } else {
                app.globalData.couponInfo = null;
                app.globalData.product = {
                    product: {...this.data.info,ZTPoint:this.data.ZTPoint},

                }
                app.globalData.retailId = this.data.retailId;
                util.pagePoint({
                    event: 'product_order',
                    param: {
                        id: this.data.info.id,
                        type: this.data.info.type
                    }
                }, 1)
                wx.setStorageSync('login_from', 'product_order_login')
                wx.setStorageSync('order_from', 'product_order_submit')
                wx.navigateTo({
                    url: '/pages/order/road/index?id=' + this.data.info.id 
                    + (this.data.retailSkuId ? ('&skuid=' + this.data.retailSkuId) : '')
                    +'&ZTPoint='+this.data.ZTPoint,
                })
            }
        })



    },

    // 组合产品获取购买的sku
    getComposeSku () {
        let skuId = this.data.info.sku[this.data.skuIndex].id
        commonApi.user_post("product/get_sku_compose_list", {
            sku_id: skuId
        }).then(res => {
            if (res&&Array.isArray(res.data)&&res.data.length>0) {
                res.data.forEach(v => {
                    v.sku.is_compose = 1;
                    v.num = this.data.producNum * v.producNum;
                    v.sku.compose_sku_id = v.compose_sku_id
                });
                app.globalData.list = []
                app.globalData.postProduct = []
                app.globalData.product = null
                util.orderByShoppingCart(res.data,app)
            }
        })
    },

    pagePoint: function (e) {
        util.pagePoint(e)
    },
    // 分享
    share: function () {
        if (!wx.getStorageSync("jstrip_token")) {
            util.pagePoint({
                event: 'product_share_login',
                param: {
                    id: that.data.info.id,
                    type: that.data.info.type
                }
            }, 1)
            commonApi.user_post("user/getMyInfo", {}).then(res => {

            })
            return;
        }
        if (!this.data.shareImg) {
            wx.showToast({
                title: '图片生成中，稍后再试',
                icon: 'none'
            })
            return;
        }
        this.setData({
            showShareFlag: !this.data.showShareFlag
        })
    },
    // 保存
    save() {
        let url = this.data.shareImg,
            that = this;
        wx.authorize({
            /* 这个就是保存相册的 */
            scope: 'scope.writePhotosAlbum',
            success() {
                wx.saveImageToPhotosAlbum({
                    filePath: url,
                    success(res) {
                        wx.showToast({
                            title: '保存成功',
                            icon: "success"
                        })
                        that.setData({
                            showShareFlag: !that.data.showShareFlag
                        })
                        util.pagePoint({
                            event: 'product_share_save',
                            param: {
                                id: that.data.info.id,
                                type: that.data.info.type
                            }
                        }, 1)
                    },
                    fail(res) {
                        wx.showToast({
                            title: '保存失败',
                            icon: 'none'
                        })
                    }
                })
            },
            complete(res) {
                console.log(res);
                /* 这里判断一下如果没有授权重新打开设置选项 */
                wx.getSetting({
                    success(res) {
                        if (!res.authSetting['scope.writePhotosAlbum']) {
                            /* 打开设置的方法 */
                            // opensit();
                            wx.showToast({
                                title: '请打开权限后再试',
                                icon: 'none'
                            })
                        }
                    }
                });
            }
        });

    },
    // 绘制海报
    drawImg: function () {
        var that = this,
            userinfo = wx.getStorageSync('jstrip_userInfo');
        if (!userinfo) {
            // 去登录
            return false;
        }
        const ctx = wx.createCanvasContext('imageCanvas');
        // const device = wx.getSystemInfoSync();
        // const ratio = device.screenWidth / 750;
        // 先获取到图片信息
        let promise2 = new Promise(function (resolve, reject) {
            wx.getImageInfo({
                src: that.data.info.headimg,
                success: function (res) {
                    resolve(res);
                },
                fail: function (res) {
                    reject(res);
                }
            })
        })
        let promise3 = new Promise(function (resolve, reject) {
            let userid = wx.getStorageSync('jstrip_userid')
            new QRCode('myQrcode', {
                text: 'https://m.cloud.sz-trip.com/LineDetail?id=' + that.data.info.id + '&sharedUserId=' + userid + '&channel=-1',
                width: 500,
                height: 500,
                padding: 12, // 生成二维码四周自动留边宽度，不传入默认为0
                correctLevel: QRCode.CorrectLevel.H, // 二维码可辨识度
                callback: (res) => {
                    resolve(res);
                }
            })
        })
        //成功得到图片信息后，开始绘图
        Promise.all([promise2, promise3]).then(imgs => {
            ctx.save();
            ctx.beginPath(); //开始绘制
            that.handleBorderRect(ctx, 0, 0, 551 * ratio, 407 * ratio, 25 * ratio, '#ccc')
            ctx.clip(); //画好了圆 剪切  原始画布中剪切任意形状和尺寸。一旦剪切了某个区域，则所有之后的绘图都会被限制在被剪切的区域内 这也是我们要save上下文的原因
            ctx.drawImage(imgs[0].path, 0, 0, 551 * ratio, 407 * ratio);
            ctx.restore();
            ctx.save();
            that.handleBorderRect2(ctx, 0, 407 * ratio, 551 * ratio, 236 * ratio, 25 * ratio, '#fff')
            ctx.restore();
            // 绘制二维码
            ctx.drawImage(imgs[1].path, 373 * ratio, 495 * ratio, 137 * ratio, 137 * ratio);
            // 开始文字绘制
            ctx.setFillStyle("#000");
            ctx.setFontSize(30 * ratio); //字大小
            ctx.setTextAlign('left'); //是否居中显示，参考点画布中线
            that.drawText(ctx, that.data.info.title, 25 * ratio, 450 * ratio, 480 * ratio, ratio);
            // 售价
            ctx.setFillStyle("#D62828");
            ctx.setFontSize(40 * ratio); //字大小
            ctx.setTextAlign('left'); //是否居中显示，参考点画布中线
            let price = that.data.info.price ? ("￥" + (that.data.info.price / 100)) : '免费';
            let width = ctx.measureText(price).width;
            ctx.fillText(price, 25 * ratio, 620 * ratio);
            // 副标题
            ctx.setFillStyle("#999999");
            ctx.setFontSize(28 * ratio); //字大小
            ctx.setTextAlign('left'); //是否居中显示，参考点画布中线
            let subtitle = that.data.info.display_tags[0];
            if (subtitle.length > 10) {
                subtitle = subtitle.substr(0, 10) + '...'
            }
            ctx.fillText(subtitle, 25 * ratio, 540 * ratio);
            // ctx.draw();
            // 划线价
            // ctx.setFillStyle("#999999");
            // ctx.setFontSize(32 * ratio); //字大小
            // ctx.setTextAlign('left'); //是否居中显示，参考点画布中线
            // let market_price = "￥" + (Number(that.data.info.market_price) / 100)
            // ctx.fillText(market_price, 40 * ratio + width, 620 * ratio);
            // let market_price_width = ctx.measureText(market_price).width;
            // 划线
            // ctx.beginPath()
            // ctx.setLineWidth(1)
            // ctx.moveTo(40 * ratio + width, 608 * ratio)
            // ctx.lineTo(45 * ratio + width + market_price_width, 608 * ratio)
            // ctx.stroke();
            // 长按识别二维码
            // ctx.setFillStyle("#666");
            // ctx.setFontSize(22 * ratio); //字大小
            // ctx.setTextAlign('left'); //是否居中显示，参考点画布中线
            // ctx.fillText("长按识别二维码", 404*ratio, 710*ratio);
            // 长按图片转发或保存
            // ctx.setFillStyle("#000");
            // ctx.setFontSize(24 * ratio); //字大小
            // ctx.setTextAlign('left'); //是否居中显示，参考点画布中线
            // ctx.fillText("长按图片保存到本地",(592*ratio - ctx.measureText("长按图片保存到本地").width)/2, 740*ratio);
            ctx.draw();
            // 转为图片
            setTimeout(() => {
                wx.canvasToTempFilePath({
                    x: 0,
                    y: 0,
                    canvasId: 'imageCanvas',
                    success: function (res) {
                        that.setData({
                            shareImg: res.tempFilePath
                        })
                    },
                    fail(err) {
                        console.log('agdgjgdajhg', err)
                    }
                })
            }, 500)
            return false;
        }).catch(err => {
            console.log("this err", err)
        })
    },
    // 圆角矩形
    handleBorderRect(ctx, x, y, w, h, r, color) {
        ctx.beginPath();
        ctx.moveTo(x + w, y + h);
        ctx.lineTo(x, y + h)
        // 左上角
        ctx.arc(x + r, y + r, r, Math.PI, 1.5 * Math.PI);
        ctx.moveTo(x + r, y);
        ctx.lineTo(x + w - r, y);
        ctx.lineTo(x + w, y + r);
        // 右上角
        ctx.arc(x + w - r, y + r, r, 1.5 * Math.PI, 2 * Math.PI);
        ctx.lineTo(x + w, y + h);
        ctx.lineTo(x + w - r, y + h);
        ctx.fillStyle = color;
        ctx.fill();
        ctx.closePath();
    },
    handleBorderRect2(ctx, x, y, w, h, r, color) {
        ctx.beginPath();
        ctx.moveTo(x, y);
        ctx.lineTo(x + w, y)
        // 右下角
        ctx.arc(x + w - r, y + h - r, r, 0, 0.5 * Math.PI);
        ctx.lineTo(x + r, y + h);
        ctx.lineTo(x, y + h - r);
        // 左下角
        ctx.arc(x + r, y + h - r, r, 0.5 * Math.PI, Math.PI);
        ctx.lineTo(x, y);
        ctx.lineTo(x, y);
        ctx.fillStyle = color;
        ctx.fill();
        ctx.closePath();
    },
    // 绘制两行文字
    drawText: function (ctx, str, x, y, canvasWidth, ratio) {
        let row = [],
            temp = "",
            chr = str.split("");
        for (var a = 0; a < chr.length; a++) {
            if (ctx.measureText(temp).width < canvasWidth) {
                temp += chr[a];
            } else {
                a--; //这里添加了a-- 是为了防止字符丢失，效果图中有对比
                row.push(temp);
                temp = "";
            }
        }
        row.push(temp);

        //如果数组长度大于2 则截取前两个
        if (row.length > 2) {
            var rowCut = row.slice(0, 2);
            var rowPart = rowCut[1];
            var test = "";
            var empty = [];
            for (var a = 0; a < rowPart.length; a++) {
                if (ctx.measureText(test).width < canvasWidth - 30 * ratio) {
                    test += rowPart[a];
                } else {
                    break;
                }
            }
            empty.push(test);
            var group = empty[0] + "..." //这里只显示两行，超出的用...表示
            rowCut.splice(1, 1, group);
            row = rowCut;
        }
        for (var b = 0; b < row.length; b++) {
            ctx.fillText(row[b], x, y + b * 40 * ratio, canvasWidth);
        }
    },


    setSimpleValue: function (e) {
        let keyname = e.currentTarget.dataset.keyname
        let val = e.currentTarget.dataset.value
        let param = {}
        param[keyname] = val
        // this.setData({
        //     skuFlag: false
        // })
        this.setData(param)
    },
    minus: function () {
        if (this.data.producNum == 1) return;
        this.setData({
            producNum: this.data.producNum - 1
        })
    },
    add: function () {
        this.setData({
            producNum: this.data.producNum + 1
        })
    },


    /**
     * 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 () {
        if (!wx.getStorageSync('jstrip_token')) {
            return;
        }
        if (this.data.info && this.data.info.id) {
            this.drawImg()
        } else {
            setTimeout(() => {
                this.onShow()
            }, 200)
        }
    },

    /**
     * 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 () {

    }
})