miaoguo_master/pages_agent/marketing/shareuser.js

import common from '../../utils/util';
import main from '../../utils/main';

const app = getApp();
var downloadNumber = 0;
var shareUrl = "";

Page({
  data: {},
  onLoad: function (options) {
    this.setData({
      Containnerheight: main.getWindowHeight(),
      ServerImage: app.globalData.uploadImageUrl + "web/"
    });
    this.init();
    downloadNumber = 0;

    shareUrl = "WebExtend?UserID=" + app.globalData.userInfo.UserID;
    shareUrl = app.globalData.serverUrl + common.Encrypt(shareUrl);

  },
  init: function () {
    var that = this;
    main.getData('GetMiaoguoShareInfo220?Version=' + app.globalData.Version, function (data) {
      wx.hideLoading();
      if (data) {
        that.setData({
          List: data,
        });
      }
    });
    main.getData("GetClassList?Flag=0", function (data) {
      if (data && data.length > 0) {
        that.setData({
          StartDate: common.formatDateCHS(data[0].StartDate),
        })
      }
    });
  },
  buildImage: function (e) {
    var that = this;

    if (!app.globalData.userInfo) {
      app.globalData.userInfo = {};
      app.globalData.userInfo.UserID = 1;
    }
    wx.showLoading({
      title: '请稍候',
    });
    var id = e.currentTarget.dataset.id;
    var imageUrl = '../../pages_agent/images/promotion_poster0' + id + '.png';

    var timeout = 100;

    //如果没有生成过二维码，则生成
    if (!app.globalData.userInfo.HasACode) {
      var imageQRCode = "BuildMiaoguoQRCode?IsWeb=1&UserID=" + app.globalData.userInfo.UserID;
      console.log(imageQRCode);
      main.getData(imageQRCode, function (data) {});
      timeout = 5000;
      app.globalData.userInfo.HasACode=1;
    }

    var downloadUrl = app.globalData.uploadImageUrl + "MiaoguoUser" + common.Encrypt(app.globalData.userInfo.UserID) + ".png";
    setTimeout(function () {
      var downloadTask = wx.downloadFile({
        url: downloadUrl,
        success(res) {
          if (res.statusCode === 200) {

            var downloadTask2 = wx.downloadFile({
              url: app.globalData.userInfo.AvatarUrl,
              success(res2) {
                if (res2.statusCode === 200) {
                  var canvas = wx.createCanvasContext("shareCanvas", that);
                  canvas.drawImage(imageUrl, 0, 0, 750, 1110);
                  canvas.drawImage(res2.tempFilePath, 30, 995, 70, 70);
                  canvas.drawImage("../../pages_agent/images/promotion_face_circle.png", 30, 995, 70, 70);
                  canvas.drawImage(res.tempFilePath, 600, 970, 120, 120);
                  
                  canvas.draw(1, function (n) {

                    wx.canvasToTempFilePath({
                      x: 0,
                      y: 0,
                      width: 750,
                      height: 1110,
                      destWidth: 750,
                      destHeight: 1110,
                      canvasId: 'shareCanvas',
                      success: function (res2) {

                        console.log(res2.tempFilePath);
                        wx.hideLoading();
                        wx.previewImage({
                          current: res2.tempFilePath, // 当前显示图片的http链接
                          urls: [res2.tempFilePath] // 需要预览的图片http链接列表
                        });
                      },
                      fail: function (err) {
                        wx.hideLoading();
                      }
                    })
                  });
                }
              }
            });
          } else {
            wx.hideLoading();
          }
        },
        fail: function (err) {
          console.log("err:" + err);
          wx.hideLoading();
          downloadNumber++;
          if (downloadNumber < 3)
            that.buildImage();
        }
      });

      downloadTask.onProgressUpdate((res) => {
        console.log('下载进度', res.progress)
        console.log('已经下载的数据长度', res.totalBytesWritten)
        console.log('预期需要下载的数据总长度', res.totalBytesExpectedToWrite)
      })
    }, timeout);

  },
  buildUrl: function () {
    wx.setClipboardData({
      data: shareUrl,
      success(res) {
        wx.showToast({
          title: '已复制',
        });
      }
    });
  },
  buildText: function () {
    var text = "我家孩子在用「秒过」小程序做复习。它可以解决错别字、背古诗、记单词，还能牢记词语、成语、公式、定理、史地政等一切基础知识，都可以用它来练习。详情体验：" + shareUrl;
    wx.setClipboardData({
      data: text,
      success(res) {
        wx.showToast({
          title: '已复制',
        });
      }
    });
  },
  onShareAppMessage: function () {
    return {
      title: app.globalData.ShareTitle,
      path: app.globalData.SharePath + '?UserID=' + app.globalData.userInfo.UserID,
      imageUrl: "../../pages/images/program_screenshot_main.png",
    }
  },
});