const Http = require("../../../utils/HttpBasics"); const imgurl = require("../../../utils/imgurl"); const config = require("../../../config/config"); 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 data:{ 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() { 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}` wx.getImageInfo({ src: src1, 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, 200 * 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, 270 * scale, 22 * scale, 305 * scale, 1) // this.drawNormalText(ctx, '探索新鲜好去处', 82 * scale, 596 * scale, 14 * scale, '#3C3C3C', 'left', 'middle', scale); // this.drawNormalText(ctx, '长按右侧小程序码', 82 * scale, 620 * scale, 12 * scale, '#9A9CAC', 'left', 'middle', scale); // this.drawNormalText(ctx, '查看更多店铺信息和热评', 82 *scale,635*scale, 12*scale, '#9A9CAC', 'left', 'middle', scale); ctx.draw(true) }, // 绘制活动图片 drawOtherImage(ctx, scale) { let that = this // 如果该商户有活动商品 if(this.data.couponList.length>0){ let cotentImageWidth = parseInt(136 * scale) let cotentImageHeight = parseInt(136 * scale) for (let i = 0; i < this.data.couponList.length; i++){ let imageItem = this.data.couponList[i].coverImg let src1 = imageItem + `?imageView/2/w/${cotentImageWidth}/h/${cotentImageHeight}` wx.getImageInfo({ src: src1, success: function (res) { ctx.drawImage(res.path, 15 * scale + i*180*scale, 300 * scale, cotentImageWidth, cotentImageHeight) ctx.draw(true) } }) } //没有活动商品生成小程序码 }else{ if(this.data.qrCode){ let coImageWidth = parseInt(336 * scale) let coImageHeight = parseInt(336 * scale) let src1 = this.data.qrCode + `?imageView/2/w/${topImageWidth}/h/${topImageHeight}` wx.getImageInfo({ src: src1, success: function(res) { ctx.drawImage(res.path, 0, 0, coImageWidth, coImageHeight) ctx.draw(true) } }) } } // icon // ctx.setShadow(0, 8 * scale, 20, 'rgba(0,0,0,0.1)') // ctx.drawImage('./../../../assets/images/download.png', 13 * scale, 590 * scale, 54*scale, 54*scale) // ctx.setShadow(0, 0, 0, 'white') // ctx.draw(true) }, // 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() { var _this = this var image = _this.data.poster wx.getImageInfo({ src: image, success: function (sres) { var imgSrc = sres.path; wx.showLoading({ title: '保存中', mask: true }) setTimeout(function () { wx.saveImageToPhotosAlbum({ filePath: imgSrc, success: function (data) { // wx.showToast({ // title: '保存成功', // icon: 'success', // duration: 2000 // }) console.log(data) wx.showModal({ title: '友情提示', content: '图片保存成功,请到相册查找分享', success(res) { if (res.confirm) { } else if (res.cancel) { } } }) }, fail: function (err) { // console.log(err); if (err.errMsg === "saveImageToPhotosAlbum:fail auth deny") { console.log("当初用户拒绝,再次发起授权") wx.openSetting({ success(settingdata) { console.log(settingdata) if (settingdata.authSetting['scope.writePhotosAlbum']) { console.log('获取权限成功,给出再次点击图片保存到相册的提示。') } else { console.log('获取权限失败,给出不给权限就无法正常使用的提示') } } }) } }, complete(res) { console.log(res); } }) wx.hideLoading(); }, 2000) } }) }, /** * 获取access_token */ getaccess_token:function(access_token){ wx.request({ url:"https://api.weixin.qq.com/wxa/getwxacode?access_token=" + access_token, method: 'POST', data: { path: 'pages/index/index', // 必须是已经发布的小程序存在的页面(否则报错) width: 430, auto_color: false,// 自动配置线条颜色,如果颜色依然是黑色,则说明不建议配置主色调 line_color: {"r":"0","g":"0","b":"0"} // auto_color 为 false 时生效,使用 rgb 设置颜色 例如 {"r":"xxx","g":"xxx","b":"xxx"} 十进制表示 }, success:function(res){ console.log(res); } }) }, /** * 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.merchantCouponList, data: data }).then(res => { that.setData({ couponList: res.data.list, }) }) .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=${e.currentTarget.dataset.id}` }) }, /** * 生命周期函数--监听页面隐藏 */ onHide: function () { }, onShareAppMessage: function (res) { var that = this; var shareObj = { title: that.data.data.title, path: `/pages/index/index?couponChannelId=${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; }, /** * 页面相关事件处理函数--监听用户下拉动作 */ onPullDownRefresh: function () { }, })