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- const Http = require("../../../../utils/HttpBasics");
- const imgurl = require("../../../../utils/imgurl");
- const config = require("../../../../config/config");
- const extConfig = wx.getExtConfigSync ? wx.getExtConfigSync() : {}
- let imgOrgUrl = extConfig.attr.imgOrgUrl;
- let imgNewUrl = extConfig.attr.imgNewUrl;
- let app = getApp();
- Page({
-
- /**
- * 页面的初始数据
- */
- data: {
- teljpgUrl: imgurl.teljpg.url,
- share01: imgurl.share01.url,
- actUrl: imgurl.act.url,
- poster: './../../../../assets/images/picture.png',
- page: 1,
- imglist: null,
- shopVoList: [],
- couponList: [], //活动劵列表
- qrCodeL:'',//小程序码
- currentTab: 0,
- isshare: false,
- showpost: false,
- imgHeight: 0,
- id: null,
- windowWidth: 0,
- windowHeight: 0,
- totalHeight: 0,
- canvasScale: 1.0, // 画布放大的倍数,因为如果保存的是一倍的分享图片的话,分享图会有点虚。所以保存的时候,canvasScale设置为2.0,wxss 里面的left: 500%;打开注释。就可保存两倍的分享图
- },
- /**
- * 分享海报的生成
- */
- //关闭海报
- closePoste: function() {
- this.setData({
- showpost: false
- })
- },
-
- /**
- * 生命周期函数--监听页面加载
- */
- onLoad: function(options) {
- let that = this;
- if (options && options.id) {
- this.setData({
- id: options.id
- });
- that.getList(options.id);
- that.getCouponList(options.id);
- this.setData({
- currentTab: 0
- })
- }
- // 获取到屏幕的宽高等信息
- wx.getSystemInfo({
- success: function(res) {
- that.setData({
- windowWidth: res.windowWidth,
- windowHeight: res.windowHeight
- })
- }
- })
- },
- /**
- * 绘制分享海报
- */
- begainDrawShareImage() {
-
- wx.showLoading({
- title: '生成中...',
- })
-
- var that = this
- // 适配屏幕
- let scale = this.data.windowWidth / 375.0
-
- this.setData({
- totalHeight: 767 * scale
- })
- // 获取Canvas
- let ctx = wx.createCanvasContext('myCanvas')
-
- // 放大 因为不放大的话,生成的分享图会模糊。暂时先注释
- ctx.scale(this.data.canvasScale, this.data.canvasScale)
-
- // 绘制主背景白色
- ctx.setFillStyle('#ffffff')
- ctx.fillRect(0, 0, this.data.windowWidth, this.data.totalHeight)
- ctx.draw()
-
- // 首先要绘制顶部的背景图片,因为它在最底层,然后才能绘制其他内容
- let topImageWidth = parseInt(375 * scale) // 因为小数有时候会请求不到图片,所以转成int
- let topImageHeight = parseInt(250 * scale)
- let src1 = this.data.data.merchantImgUrl + `?imageView/2/w/${topImageWidth}/h/${topImageHeight}`
- let src2 = src1.replace(imgOrgUrl, imgNewUrl)
- wx.getImageInfo({
- src: src2,
- success: function(res) {
- ctx.drawImage(res.path, 0, 0, topImageWidth, topImageHeight)
- // 覆盖黑色蒙层
- ctx.setFillStyle('rgba(0,0,0,0.3)')
- ctx.fillRect(0, 0, topImageWidth, topImageHeight)
-
- ctx.draw(true)
-
- that.drawOtherContent(ctx, scale)
- that.drawOtherImage(ctx, scale)
- }
- })
- },
-
- // 绘制除了图片之外的剩余内容
- drawOtherContent(ctx, scale) {
-
- // 绘制中间的灰色背景
- ctx.setFillStyle('rgba(246,246,246,1)')
- //(x轴,y轴,宽,高)
- ctx.fillRect(14 * scale, 230 * scale, 347 * scale, 58 * scale)
-
- //name
- ctx.setFillStyle('white');
- ctx.setFontSize(30 * scale);
- this.canvasTextAutoLine(this.data.data.merchantName, ctx, 20 * scale, 210 * scale, 30 * scale, 258 * scale, 1)
- // address
- ctx.setFillStyle('#000');
- ctx.setFontSize(18 * scale);
- this.canvasTextAutoLine("地址:" + this.data.data.shopVoList[0].floorName + this.data.data.shopVoList[0].buildingName + this.data.data.shopVoList[0].shopNumber, ctx, 20 * scale, 265 * scale, 20 * scale, 305 * scale, 1)
- if (this.data.couponList.length>0) {
- for (let i = 0; i < this.data.couponList.length; i++) {
- // 第一个商品信息
- this.drawNormalText(ctx, this.substrTile(this.data.couponList[1].title), 15 * scale, 416 * scale, 16 * scale, '#000', 'left', 'middle', scale);
- this.drawNormalText(ctx, "价格:"+this.data.couponList[1].salePrice, 15 * scale, 436 * scale, 14 * scale, '#FF3232', 'left', 'middle', scale);
- //第二个商品信息
- this.drawNormalText(ctx, this.substrTile(this.data.couponList[2].title), 130 * scale, 416 * scale, 16 * scale, '#000', 'left', 'middle', scale);
- this.drawNormalText(ctx, "价格:"+this.data.couponList[2].salePrice, 130 * scale, 436 * scale, 14 * scale, '#FF3232', 'left', 'middle', scale);
- //第三个商品信息
- this.drawNormalText(ctx, this.substrTile(this.data.couponList[3].title), 255 * scale, 416 * scale, 16 * scale, '#000', 'left', 'middle', scale);
- this.drawNormalText(ctx, "价格:"+this.data.couponList[3].salePrice, 255 * scale, 436 * scale, 14 * scale, '#FF3232', 'left', 'middle', scale);
- }
- this.drawNormalText(ctx, "点击下载保存海报到相册", 185 * scale, 506 * scale, 16 * scale, '#000', 'left', 'middle', scale);
- }
- ctx.draw(true)
-
- },
- //截取商品名
- substrTile(str){
- return str.substr(0,5)+'...'
- },
- // 绘制活动图片
- drawOtherImage(ctx, scale) {
- var that = this
- // 如果该商户有活动商品
- if (that.data.couponList.length>0) {
- let cotentImageWidth = parseInt(100 * scale)
- let cotentImageHeight = parseInt(100 * scale)
- let src3 = this.data.qrCode + `?imageView/2/w/${cotentImageWidth}/h/${cotentImageHeight}`//小程序码
- let src4 = src3.replace(imgOrgUrl, imgNewUrl)
- for (let i = 0; i < that.data.couponList.length; i++) {
- let imageItem = that.data.couponList[i].coverImg
- let src1 = imageItem + `?imageView/2/w/${cotentImageWidth}/h/${cotentImageHeight}`
-
- let src2 = src1.replace(imgOrgUrl, imgNewUrl)
- wx.getImageInfo({
- src: src2,
- success: function(res) {
- ctx.drawImage(res.path, 15 * scale + i * 120 * scale, 300 * scale, cotentImageWidth, cotentImageHeight)
- ctx.draw(true)
-
- }
- })
- }
- //有活动商品小程序码
- wx.getImageInfo({
- src: src4,
- success: function(res) {
- ctx.drawImage(res.path, 15 * scale * scale, 450 * scale, 150, 150)
- ctx.draw(true)
-
- }
- })
- //没有活动商品生成小程序码
- } else {
- if (this.data.qrCode) {
- let coImageWidth = parseInt(260 * scale)
- let coImageHeight = parseInt(260 * scale)
- let src1 = this.data.qrCode + `?imageView/2/w/${coImageWidth}/h/${coImageHeight}`
- let src2 = src1.replace(imgOrgUrl, imgNewUrl)
- wx.getImageInfo({
- src: src2,
- success: function(res) {
- ctx.drawImage(res.path, 50 * scale, 320 * scale, coImageWidth, coImageHeight)
- ctx.draw(true)
- }
- })
- }
- }
- wx.hideLoading()
- },
-
- // 绘制只有一行的文字
- drawNormalText(ctx, str, x, y, font, style, align, baseLine) {
- ctx.setFontSize(font);
- ctx.setFillStyle(style);
- ctx.setTextAlign(align);
- ctx.setTextBaseline(baseLine);
- ctx.fillText(str, x, y);
- },
-
-
- /*
- * 绘制多行文本,自动换行,超出添加...
- *
- str:要绘制的字符串
- canvas:canvas对象
- initX:绘制字符串起始x坐标
- initY:绘制字符串起始y坐标
- lineHeight:字行高,自己定义个值即可
- maxWidth: 文本最大宽度
- row: 最大行数
- */
- canvasTextAutoLine: function(str, ctx, initX, initY, lineHeight, maxWidth, row = 1) {
- var lineWidth = 0;
- var lastSubStrIndex = 0;
- var currentRow = 1;
- for (let i = 0; i < str.length; i++) {
- lineWidth += ctx.measureText(str[i]).width;
- if (lineWidth > maxWidth) {
- currentRow++;
- let newStr = str.substring(lastSubStrIndex, i)
- if (currentRow > row && str.length > i) {
- newStr = str.substring(lastSubStrIndex, i - 2) + '...'
- }
- ctx.fillText(newStr, initX, initY);
- initY += lineHeight;
- lineWidth = 0;
- lastSubStrIndex = i;
-
- if (currentRow > row) {
- break;
- }
- }
- if (i == str.length - 1) {
- ctx.fillText(str.substring(lastSubStrIndex, i + 1), initX, initY);
- }
- }
- },
- // 保存图片
- saveImage(){
- let that = this
- wx.canvasToTempFilePath({
- x: 0,
- y: 0,
- width: this.data.windowWidth * this.data.canvasScale,
- height: this.data.totalHeight * this.data.canvasScale,
- canvasId: 'myCanvas',
- success: function (res) {
- that.saveImageToPhotos(res.tempFilePath);
- },
- fail: function (res) {
- wx.showToast({
- title: '图片生成失败',
- icon: 'none',
- duration: 2000
- })
- }
- })
- },
- saveImageToPhotos: function (tempFilePath) {
- wx.saveImageToPhotosAlbum({
- filePath: tempFilePath,
- success(result) {
- wx.showToast({
- title: '保存成功,从相册中分享到朋友圈吧',
- icon: 'none',
- duration: 4000
- })
- },
- fail: function (err) {
- if (err.errMsg === "saveImageToPhotosAlbum:fail:auth denied" || err.errMsg === "saveImageToPhotosAlbum:fail auth deny") {
- // 这边微信做过调整,必须要在按钮中触发,因此需要在弹框回调中进行调用
- wx.showModal({
- title: '提示',
- content: '需要您授权保存相册',
- showCancel: false,
- success:modalSuccess=>{
- wx.openSetting({
- success(settingdata) {
- console.log("settingdata", settingdata)
- if (settingdata.authSetting['scope.writePhotosAlbum']) {
- wx.showModal({
- title: '提示',
- content: '获取权限成功,再次点击图片即可保存',
- showCancel: false,
- })
- } else {
- wx.showModal({
- title: '提示',
- content: '获取权限失败,将无法保存到相册哦~',
- showCancel: false,
- })
- }
- },
- fail(failData) {
- console.log("failData",failData)
- },
- complete(finishData) {
- console.log("finishData", finishData)
- }
- })
- }
- })
- }
- },
- })
- },
- /**
- * 拨打电话
- */
- phone: function(e) {
- let that = this;
- wx.makePhoneCall({
- phoneNumber: e.target.dataset.merchantlinkphone
- });
- },
- /**
- * 显示分享弹框
- */
- showshare: function() {
- this.setData({
- isshare: true,
- })
- },
- /**
- * 隐藏分享弹框
- */
- hidemodal: function() {
- this.setData({
- isshare: false,
- })
- },
- //滑动切换
- swiperTabView: function(e) {
- this.setData({
- currentTab: e.detail.current
- });
- },
- /**
- * 隐藏分享海报
- */
- hideposter: function() {
- this.setData({
- showpost: false,
- })
- },
- /**
- * 显示分享海报
- */
- showPoster: function() {
- this.setData({
- showpost: true,
- })
- this.begainDrawShareImage();
- },
- //点击切换
- clickTab: function(e) {
- if (this.data.currentTab === e.target.dataset.current) {
- return false;
- } else {
- this.setData({
- currentTab: e.target.dataset.current
- })
- }
- },
- /**
- * 获取商户详情
- */
- getList: function(id) {
- let that = this;
- let data;
- data = {
- pageNum: that.data.page,
- pageSize: 15,
- id: id
- }
- Http.get({
- url: config.api.merchantList,
- data: data
- }).then(res => {
- that.setData({
- data: res.data.list[0],
- shopVoList: res.data.list[0].shopVoList,
- imglist: JSON.parse(res.data.list[0].coverPicture) ? JSON.parse(res.data.list[0].coverPicture) : res.data.list[0].merchantImgUrl,
- })
- })
- .catch(err => {
- wx.showToast({
- title: err.errMsg,
- icon: 'none',
- duration: 2000,
- mask: false
- });
- })
- },
- /**
- * 获取商户活动信息 券类型(1.满减券,2.代金券,3.团购券,4.礼品券,5.停车券,6.多商户券,8.砍价券,9.团购券,50.积分券,51.积分停车券 100.消费卡)
- * 投放频道:(1.列表, 2.限时抢购, 3. banner图 4. 游戏 5.卡频道 6.砍价频道 7.拼团频道 8专题)
- */
- getCouponList: function(id) {
- let that = this;
- let data;
- data = {
- status: 0,
- merchantId: id,
- pageNum: that.data.page,
- pageSize: 15,
- }
- Http.get({
- url: config.api.listByMerchant,
- data: data
- }).then(res => {
- that.setData({
- couponList: res.data.page.list,
- qrCode:res.data.qrCode,
- })
- })
- .catch(err => {
- wx.showToast({
- title: err.errMsg,
- icon: 'none',
- duration: 2000,
- mask: false
- });
- })
- },
- /**
- * 获取多商铺列表
- */
- shopList: function(e) {
- wx.navigateTo({
- url: `/pages/index/merchantList/index?id=${e.currentTarget.dataset.id}`
- })
- },
- // onShareAppMessage: function(res) {
- // var that = this;
- // var shareObj = {
- // title: that.data.data.title,
- // path: `/pages/index/index?couponChannelId=${that.data.couponChannelId}`,
- // success: function(res) {
- // if (res.errMsg == 'shareAppMessage:ok') {}
- // },
- // fail: function(error) {
- // if (res.errMsg == 'shareAppMessage:fail cancel') {} else if (res.errMsg == 'shareAppMessage:fail') {}
- // }
- // };
- // // 来自页面内的按钮的转发
- // if (res.from === 'button') {
- // var eData = res.target.dataset.id;
- // shareObj.path = `/pages/index/index?couponChannelId=${eData}`;
- // }
- // // 返回shareObj
- // return shareObj;
- // },
- })
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